Document:

Indenture, dated March 12, 2008, between the Company and the Trustee

 Exhibit 4.1 
 BILL BARRETT CORPORATION 
 as Issuer, 
 and 
 DEUTSCHE BANK TRUST COMPANY AMERICAS, 
 as Trustee 
 Indenture 
 Dated as of March 12, 2008 
 Senior Debt
Securities 

					
	 	  	 	  	Page
	ARTICLE I	  	
		
	DEFINITIONS AND INCORPORATION BY REFERENCE	  	
			
	 Section 1.01
	  	Definitions	  	1
	 Section 1.02
	  	Other Definitions	  	10
	 Section 1.03
	  	Incorporation by Reference of TIA	  	10
	 Section 1.04
	  	Rules of Construction	  	10
		
	ARTICLE II	  	
		
	DEBT SECURITIES	  	
			
	 Section 2.01
	  	Forms Generally	  	11
	 Section 2.02
	  	Form of Face of Security	  	11
	 Section 2.03
	  	Section Form of Reverse of Security	  	14
	 Section 2.04
	  	Form of Trustee’s Certificate of Authentication	  	18
	 Section 2.05
	  	Principal Amount; Issuable in Series	  	18
	 Section 2.06
	  	Execution of Debt Securities	  	20
	 Section 2.07
	  	Authentication and Delivery of Debt Securities	  	21
	 Section 2.08
	  	Denomination of Debt Securities	  	22
	 Section 2.09
	  	Registration of Transfer and Exchange	  	22
	 Section 2.10
	  	Temporary Debt Securities	  	24
	 Section 2.11
	  	Mutilated, Destroyed, Lost or Stolen Debt Securities	  	24
	 Section 2.12
	  	Cancellation of Surrendered Debt Securities	  	25
	 Section 2.13
	  	Provisions of the Indenture and Debt Securities for the Sole Benefit of the Parties and the Holders	  	25
	 Section 2.14
	  	Payment of Interest; Interest Rights Preserved	  	26
	 Section 2.15
	  	Wire Transfers	  	26
	 Section 2.16
	  	Securities Issuable in the Form of a Global Security	  	26
	 Section 2.17
	  	Medium Term Securities	  	29
	 Section 2.18
	  	Defaulted Interest	  	29
	 Section 2.19
	  	CUSIP Numbers	  	30
		
	ARTICLE III	  	
		
	REDEMPTION OF DEBT SECURITIES	  	
			
	 Section 3.01
	  	Applicability of Article	  	30
	 Section 3.02
	  	Notice of Redemption; Selection of Debt Securities	  	30
	 Section 3.03
	  	Deposit of Redemption Price	  	32
	 Section 3.04
	  	Payment of Debt Securities Called for Redemption	  	32
	 Section 3.05
	  	Mandatory and Optional Sinking Funds	  	33
	 Section 3.06
	  	Redemption of Debt Securities for Sinking Fund	  	33

					
	 	  	 	  	Page
	ARTICLE IV	  	
			
		  	PARTICULAR COVENANTS OF THE COMPANY	  	
			
	 Section 4.01
	  	Payment of Principal of, and Premium, if any, and Interest on, Debt Securities	  	35
	 Section 4.02
	  	Maintenance of Offices or Agencies for Registration of Transfer, Exchange and Payment of Debt Securities	  	36
	 Section 4.03
	  	Appointment To Fill a Vacancy in the Office of Trustee	  	36
	 Section 4.04
	  	Duties of Paying Agents, Etc.	  	36
	 Section 4.05
	  	SEC Reports; Financial Statements	  	37
	 Section 4.06
	  	Compliance Certificate	  	38
	 Section 4.07
	  	Further Instruments and Acts	  	38
	 Section 4.08
	  	Corporate Existence	  	38
	 Section 4.09
	  	Maintenance of Properties	  	39
	 Section 4.10
	  	Payment of Taxes and Other Claims	  	39
	 Section 4.11
	  	Limitation on Sale/Leaseback Transactions	  	39
	 Section 4.12
	  	Limitation on Liens	  	40
		
	ARTICLE V	  	
			
		  	HOLDERS’ LISTS AND REPORTS BY THE TRUSTEE	  	
			
	 Section 5.01
	  	 Company To Furnish Trustee Information as to Names and Addresses of Holders; Preservation of Information
	  	42
	 Section 5.02
	  	Communications to Holders	  	42
	 Section 5.03
	  	Reports by Trustee	  	42
	 Section 5.04
	  	Record Dates for Action by Holders	  	43
		
	ARTICLE VI	  	
		
	REMEDIES OF THE TRUSTEE AND HOLDERS IN EVENT OF DEFAULT	  	
			
	 Section 6.01
	  	Events of Default	  	43
	 Section 6.02
	  	Collection of Indebtedness by Trustee, Etc.	  	46
	 Section 6.03
	  	Application of Monies Collected by Trustee	  	47
	 Section 6.04
	  	Limitation on Suits by Holders	  	48
	 Section 6.05
	  	Remedies Cumulative; Delay or Omission in Exercise of Rights Not a Waiver of Default	  	48
	 Section 6.06
	  	 Rights of Holders of Majority in Principal Amount of Debt Securities To Direct Trustee and To Waive Default
	  	48
	 Section 6.07
	  	Trustee To Give Notice of Defaults Known to It, But May Withhold Such Notice in Certain Circumstances	  	49
	 Section 6.08
	  	Requirement of an Undertaking To Pay Costs in Certain Suits Under the Indenture or Against the Trustee	  	49

  

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	 	  	 	  	Page
		
	ARTICLE VII	  	
		
	CONCERNING THE TRUSTEE	  	
			
	 Section 7.01
	  	Certain Duties and Responsibilities	  	50
	 Section 7.02
	  	Certain Rights of Trustee	  	51
	 Section 7.03
	  	Trustee Not Liable for Recitals in Indenture or in Debt Securities	  	52
	 Section 7.04
	  	Trustee, Paying Agent or Registrar May Own Debt Securities	  	52
	 Section 7.05
	  	Monies Received By Trustee To Be Held in Trust	  	52
	 Section 7.06
	  	Compensation and Reimbursement	  	53
	 Section 7.07
	  	Right of Trustee To Rely on an Officers’ Certificate Where No Other Evidence Specifically Prescribed	  	53
	 Section 7.08
	  	Separate Trustee; Replacement of Trustee	  	53
	 Section 7.09
	  	Successor Trustee by Merger	  	55
	 Section 7.10
	  	Eligibility; Disqualification	  	55
	 Section 7.11
	  	Preferential Collection of Claims against Company	  	55
	 Section 7.12
	  	Compliance with Tax Laws	  	55
		
	ARTICLE VIII	  	
		
	CONCERNING THE HOLDERS	  	
			
	 Section 8.01
	  	Evidence of Action by Holders	  	56
	 Section 8.02
	  	Proof of Execution of Instruments and of Holding of Debt Securities	  	56
	 Section 8.03
	  	Who May Be Deemed Owner of Debt Securities	  	56
	 Section 8.04
	  	Instruments Executed by Holders Bind Future Holders	  	56
		
	ARTICLE IX	  	
		
	SUPPLEMENTAL INDENTURES	  	
			
	 Section 9.01
	  	Purposes for Which Supplemental Indenture May Be Entered into without Consent of Holders	  	57
	 Section 9.02
	  	Modification of Indenture with Consent of Holders of Debt Securities	  	59
	 Section 9.03
	  	Effect of Supplemental Indentures	  	60
	 Section 9.04
	  	Debt Securities May Bear Notation of Changes By Supplemental Indentures	  	60
		
	ARTICLE X	  	
		
	CONSOLIDATION, MERGER, SALE OR CONVEYANCE	  	
			
	 Section 10.01
	  	Consolidations and Mergers of the Company	  	61
	 Section 10.02
	  	Rights and Duties of Successor Company	  	61

  

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	 	  	 	  	Page
		
	ARTICLE XI	  	
		
	SATISFACTION AND DISCHARGE OF INDENTURE;	  	
	DEFEASANCE; UNCLAIMED MONIES	  	
			
	 Section 11.01
	  	Applicability of Article	  	62
	 Section 11.02
	  	Satisfaction and Discharge of Indenture; Defeasance	  	62
	 Section 11.03
	  	Conditions of Defeasance	  	63
	 Section 11.04
	  	Application of Trust Money	  	64
	 Section 11.05
	  	Repayment to Company	  	64
	 Section 11.06
	  	Indemnity for U.S. Government Obligations	  	64
	 Section 11.07
	  	Reinstatement	  	64
		
	ARTICLE XII	  	
		
	MISCELLANEOUS PROVISIONS	  	
			
	 Section 12.01
	  	Successors and Assigns of Company Bound by Indenture	  	65
	 Section 12.02
	  	Acts of Board, Committee or Officer of Successor Company Valid	  	65
	 Section 12.03
	  	Required Notices or Demands	  	65
	 Section 12.04
	  	Indenture and Debt Securities To Be Construed in accordance with the Laws of the State of New York	  	66
	 Section 12.05
	  	 Officers’ Certificate and Opinion of Counsel To Be Furnished upon Application or Demand by the Company
	  	66
	 Section 12.06
	  	Payments Due on Legal Holidays	  	67
	 Section 12.07
	  	Provisions Required by TIA to Control	  	67
	 Section 12.08
	  	Computation of Interest on Debt Securities	  	67
	 Section 12.09
	  	Rules by Trustee, Paying Agent and Registrar	  	67
	 Section 12.10
	  	No Recourse against Others	  	67
	 Section 12.11
	  	Severability	  	67
	 Section 12.12
	  	Effect of Headings	  	67
	 Section 12.13
	  	Indenture May Be Executed in Counterparts	  	67
	 Section 12.14
	  	Patriot Act	  	68

  

 -iv- 

 INDENTURE dated as of March 12, 2008 among Bill Barrett Corporation., a Delaware corporation (the
“Company”) and Deutsche Bank Trust Company Americas, a New York State banking corporation, as trustee (the “Trustee”). 
 RECITALS OF THE COMPANY 
 The Company has duly authorized the execution and delivery of this
Indenture to provide for the issuance from time to time of its senior unsecured debentures, notes, bonds or other evidences of indebtedness to be issued in one or more series unlimited as to principal amount (herein called the “Debt
Securities”), to bear such rates of interest, to mature at such time or times, to be issued in one or more series and to have such other provisions as shall be fixed as hereinafter provided. 
 All things necessary to make this Indenture a valid agreement of the Company, in accordance with its terms, have been done. 
 This Indenture is subject to the provisions of the Trust Indenture Act of 1939, as amended, and the rules and regulations of the Securities and Exchange
Commission promulgated thereunder that are required to be part of this Indenture and, to the extent applicable, shall be governed by such provisions. 
 NOW, THEREFORE, THIS INDENTURE WITNESSETH 
 That in order to declare the terms and conditions upon
which the Debt Securities are authenticated, issued and delivered, and in consideration of the premises, and of the purchase and acceptance of the Debt Securities by the holders thereof, the Company and the Trustee covenant and agree with each
other, for the benefit of the respective Holders from time to time of the Debt Securities or any series thereof, as follows: 
 ARTICLE I

 DEFINITIONS AND INCORPORATION BY REFERENCE 
 Section 1.01 Definitions. The terms defined in this Section (except as in this Indenture otherwise expressly provided or unless the context otherwise requires) for all purposes of this Indenture, any Company
Order, any Board Resolution, and any indenture supplemental hereto shall have the respective meanings specified in this Section. All other terms used in this Indenture which are defined in the Trust Indenture Act of 1939, as amended, or which are by
reference in such Act defined in the Securities Act of 1933, as amended (except as herein otherwise expressly provided or unless the context otherwise requires), shall have the meanings assigned to such terms in the TIA and in said Securities Act as
in force at the date of the execution of this instrument. 
 “Affiliate” of any specified Person means any Person directly
or indirectly controlling or controlled by, or under direct or indirect common control with, such specified Person. For purposes of this definition, control of a Person shall mean the power to direct the management and policies of such Person,
directly or indirectly, whether through the ownership of voting securities, by contract or otherwise. The Trustee may request and may conclusively rely upon an Officers’ Certificate to determine whether any Person is an Affiliate of any
specified Person. 

 “Agent” means any Registrar or paying agent. 
 “Attributable Indebtedness”, when used with respect to any Sale/Leaseback Transaction, means, as at the time of determination, the
present value (discounted at a rate equivalent to the Company’s then current weighted average cost of funds for borrowed money as at the time of determination, compounded on a semiannual basis) of the total obligations of the lessee for rental
payments during the remaining term of the lease included in such Sale/Leaseback Transaction (including any period for which such lease can be extended). 
 “Authorized Newspaper” means a newspaper in an official language of the place of publication or in the English language, customarily published at least once a day, and customarily published for at
least five days in each calendar week whether or not published on days that are Legal Holidays in the place of publication, and of general circulation in such city or cities specified pursuant to Section 2.05 with respect to the Debt Securities
of any series. Where successive publications are required to be made in Authorized Newspapers, the successive publications may be made in the same or in different newspapers in the same city meeting the foregoing requirements and in each case on any
Business Day in such city. 
 “Bank Indebtedness” means any and all amounts payable under or in respect of any note, loan or
credit agreement with a banking institution, including principal, premium (if any), interest (including interest accruing on or after the filing of any petition in bankruptcy or for reorganization relating to the Company whether or not a claim for
post-filing interest is allowed in such proceedings), fees, charges, expenses, reimbursement obligations, guarantees and all other amounts payable thereunder or in respect thereof. 
 “Bankruptcy Law” means title 11, U.S. Code or any similar federal or state law for the relief of debtors. 
 “Board of Directors” means, when used with reference to the Company, either the board of directors of the Company, or any authorized
committee of such board of directors of the Company. 
 “Board Resolution” means a copy of one or more resolutions,
certified by the Secretary or an assistant Secretary of the Company, to have been duly adopted by the Board of Directors and to be in full force and effect on the date of such certification delivered to the Trustee. 
 “Business Day” means any day other than a Legal Holiday. 
 “Capital Stock” of any Person means and includes any and all shares, rights to purchase, warrants or options (whether or not currently exercisable), participation or other equivalents of or interests
in (however designated) the equity (which includes, but is not limited to, common stock, preferred stock and partnership and joint venture interests) of such Person (excluding any debt securities that are convertible into, or exchangeable for, such
equity). 
  

 -2- 

 “Capitalized Lease Obligation” of any Person means any obligation of such Person to pay
rent or other amounts under a lease of property, real or personal, that is required to be capitalized for financial reporting purposes in accordance with GAAP; and the amount of such obligation shall be the capitalized amount thereof determined in
accordance with GAAP. 
 “Common Equity” of any Person means and includes all Capital Stock of such Person that is generally
entitled to (i) vote in the election of directors of such Person, or (ii) if such Person is not a corporation, vote or otherwise participate in the selection of the governing body, partners, managers or others that will control the
management and policies of such Person. 
 “Company” means the Person named as the “Company” in the first
paragraph of this instrument until a successor corporation shall have become such pursuant to the applicable provisions of this Indenture, and thereafter “Company” shall mean such successor corporation. 
 “Company Request” and “Company Order” means, respectively, a written request or order signed in the name of the Company
by its Chairman of the Board, its President or a Vice President, and by its Treasurer, an Assistant Treasurer, its Controller, an Assistant Controller, its Secretary or an Assistant Secretary, and delivered to the Trustee. 
 “Consolidated Net Tangible Assets” means, for the Company and its Restricted Subsidiaries on a consolidated basis determined in
accordance with GAAP, the aggregate amounts of assets (less depreciation and valuation reserves and other reserves and items deductible from gross book value of specific asset accounts under GAAP) that would be included on a balance sheet after
deducting therefrom (a) all liability items except deferred income taxes, commercial paper, short term bank indebtedness, Funded Indebtedness, other long-term liabilities and shareholders’ equity and (b) all goodwill, trade names,
trademarks, patents, unamortized debt discount and expense and other like intangibles. 
 “Currency Hedge Obligations”
means, at any time as to any Person, the obligations of such Person at such time that were incurred in the ordinary course of business pursuant to any foreign currency exchange agreement, option or futures contract or other similar agreement or
arrangement designed to protect against or manage such Person’s or any of its Subsidiaries’ exposure to fluctuations in foreign currency exchange rates. 
 “Custodian” means any receiver, trustee, assignee, liquidation or similar official under any Bankruptcy Law. 
 “Debt Security” or “Debt Securities” has the meaning stated in the first recital of this Indenture and more particularly means any debt security or debt securities, as the case may be
of any series authenticated and delivered under this Indenture. 
 “Default” means any event, act or condition that is, or
after notice or the passage of time or both would be, an Event of Default. 
 “Depositary” means, unless otherwise specified
by the Company pursuant to either Section 2.05 or 2.16, with respect to Debt Securities of any series issuable or issued in whole or in part in the form of one or more Global Securities, The Depository Trust Company, New York, New York, another
clearing agency or any successor thereto registered as a clearing agency under the Exchange Act or other applicable statute or regulations. 
  

 -3- 

 “Dollar” or “$” means a dollar or other equivalent unit of legal tender
as at the time for payment of public or private debts in the United States. 
 “Exchange Act” means the Securities Exchange
Act of 1934, as amended, and any successor statute. 
 “Floating Rate Security” means a Debt Security that provides for the
payment of interest at a variable rate determined periodically by reference to an interest rate index specified pursuant to Section 2.05. 
 “Funded Indebtedness” means all Indebtedness (including Indebtedness incurred under any revolving credit, letter of credit or working capital facility) that matures by its terms, or that is renewable at the option of any
obligor thereon to a date, more than one year after the date on which such Indebtedness is originally incurred. 
 “GAAP”
means generally accepted accounting principles set forth in the opinions and pronouncements of the Accounting Principles Board of the American Institute of Certified Public Accountants and statements and pronouncements of the Financial Accounting
Standards Board or in such other statements by such other entity as may be approved by a significant segment of the accounting profession of the United States, as in effect on the date on which the Debt Securities of the applicable series are
issued. 
 “Global Security” means with respect to any series of Debt Securities issued hereunder, a Debt Security which is
executed by the Company and authenticated and delivered by the Trustee to the Depositary or pursuant to the Depositary’s instruction, all in accordance with this Indenture and any Indentures supplemental hereto, or resolution of the Board of
Directors and set forth in an Officers’ Certificate, which shall be registered in the name of the Depositary or its nominee and which shall represent, and shall be denominated in an amount equal to the aggregate principal amount of, all the
Outstanding Debt Securities of such series or any portion thereof, in either case having the same terms, including, without limitation, the same original issue date, date or dates on which principal is due and interest rate or method of determining
interest. 
 “Hedging Obligations” of any Person means the obligations of such Person pursuant to any Currency Hedge
Obligations, Interest Rate Hedging Agreements or Oil and Gas Hedging Contracts. 
 “Holder,” “Holder of Debt
Securities” means a Person in whose name a Debt Security is registered in the Debt Security Register. 
 “Indebtedness” of any Person at any date means, without duplication, (i) all indebtedness of such Person for borrowed money (whether or not the recourse of the lender is to the whole of the assets of such Person or
only to a portion thereof), (ii) all obligations of such Person evidenced by bonds, debentures, notes or other similar instruments, (iii) all obligations of such Person in respect of letters of credit or other similar instruments (or
reimbursement obligations with respect thereto), other than standby letters of credit 

  

 -4- 

 
incurred by such Person in the ordinary course of business, (iv) all obligations of such Person to pay the deferred and unpaid purchase price of
property or services, except trade payables and accrued expenses incurred in the ordinary course of business, (v) all Capitalized Lease Obligations of such Person, (vi) all Indebtedness of others secured by a Lien on any asset of such
Person, whether or not such Indebtedness is assumed by such Person, (vii) all Indebtedness of others guaranteed by such Person to the extent of such guarantee, and (viii) all Hedging Obligations of such Person. 
 “Indenture” means this instrument as originally executed, or, if amended or supplemented as herein provided, as so amended or
supplemented and shall include the form and terms of particular series of Debt Securities as contemplated hereunder, whether or not a supplemental Indenture is entered into with respect thereto. 
 “Interest” (i) when used with respect to any Original Issue Discount Debt Security which by its terms bears interest only after
Stated Maturity, means interest payable after maturity (whether at Stated Maturity, upon acceleration or redemption or otherwise) or after the date, if any, on which the Company becomes obligated to acquire a Debt Security, whether by purchase or
otherwise; and (ii) when used with respect to any Debt Security, means the amount of all interest accruing on such Debt Security, including any default interest and any interest accruing after any Event of Default that would have accrued but
for the occurrence of such Event of Default, whether or not a claim for such interest would be otherwise allowable under applicable law. 
 “Interest Rate Hedging Agreements” means, with respect to any Person, the obligations of such Person under (i) interest rate swap agreements, interest rate cap agreements and interest rate collar agreements and
(ii) other agreements or arrangements designed to protect such Person or any of its Subsidiaries against fluctuations in interest rates. 
 “Legal Holiday” means a Saturday, Sunday or a day on which banking institutions in the Place of Payment are not authorized or obligated to be open. 
 “Lien” means, with respect to any asset, any mortgage, lien, pledge, charge, security interest or encumbrance of any kind in respect of
such asset (including, without limitation, any production payment, advance payment or similar arrangement with respect to minerals in place), whether or not filed, recorded or otherwise perfected under applicable law. For the purposes of this
Indenture, the Company or any Restricted Subsidiary shall be deemed to own subject to a Lien any asset which it has acquired or holds subject to the interest of a vendor or lessor under any conditional sale agreement, Capitalized Lease Obligation
(other than any Capitalized Lease Obligation relating to any building, structure, equipment or other property used or to be used in the ordinary course of business of the Company and the Restricted Subsidiaries) or other title retention agreement
relating to such asset. The right of set-off, whether by operation of law or by contract, does not constitute a Lien unless there is a related obligation to maintain a deposit of cash or other assets in respect of which such right of set-off may be
exercised. 
 “Net Proceeds” means, with respect to any Sale/Leaseback Transaction entered into by the Company or any
Restricted Subsidiary, the aggregate net proceeds received by the Company or such Restricted Subsidiary from such Sale/Leaseback Transaction after payment of expenses, taxes, commissions and similar amounts incurred in connection therewith, whether
such proceeds are in cash or in property (valued at the fair market value thereof at the time of receipt, as determined by the Board of Directors). 
  

 -5- 

 “Officer” means the Chairman of the Board, President, the Treasurer, any Assistant
Treasurer, Controller, any Vice President or Assistant Vice President of a Person. 
 “Officers’ Certificate” means a
certificate signed by an Officer and by the Secretary or Assistant or Attesting Secretary of the Company. Each such certificate shall include the statements provided for in Section 12.05, if and to the extent required by the provisions thereof.

 “Oil and Gas Hedging Contracts” means any oil and gas purchase or hedging agreement, and other agreement or arrangement,
in each case, that is designed to provide protection against oil and gas price fluctuations. 
 “Opinion of Counsel” means a
written opinion from legal counsel who is reasonably acceptable to the Trustee. The counsel may be an employee of or counsel to the Company. 
 “Ordinary Course Lien” means: 
 (a) Liens for taxes, assessments or governmental charges or levies
on the property of the Company or any Restricted Subsidiary if the same shall not at the time be delinquent or thereafter can be paid without penalty, or are being contested in good faith by appropriate proceedings and for which adequate reserves in
accordance with GAAP shall have been set aside on the books of the Company; 
 (b) Liens imposed by law, such as
carriers’, warehousemen’s, landlords’ and mechanics’ liens and other similar liens arising in the ordinary course of business which secure obligations not more than 60 days past due or which are being contested in good faith by
appropriate proceedings and for which adequate reserves in accordance with GAAP shall have been set aside on the books of the Company; 
 (c) Liens arising out of pledges or deposits under worker’s compensation laws, unemployment insurance, old age pensions, or other social security or retirement benefits, or similar legislation; 
 (d) Utility easements, building restrictions and such other encumbrances or charges against real property as are of a nature generally
existing with respect to properties of a similar character and which do not in any material way affect the marketability of the same or interfere with the use thereof in the ordinary course of business of the Company and the Restricted Subsidiaries,
as the case may be; 
 (e) Liens arising under operating agreements or similar agreements in respect of obligations which are
not yet due or which are being contested in good faith by appropriate proceedings; 
  

 -6- 

 (f) Liens reserved in oil, gas and/or mineral leases, production sharing contracts and
petroleum concession agreements and licenses for bonus or rental payments and for compliance with the terms of such leases, contracts, agreements and licenses; 
 (g) Liens pursuant to partnership agreements, oil, gas and/or mineral leases, production sharing contracts, petroleum concession
agreements and licenses, farm-out agreements, division orders, contracts for the sale, purchase, exchange, processing or transportation of oil, gas and/or other hydrocarbons, unitization and pooling declarations and agreements, operating agreements,
development agreements, area of mutual interest agreements, and other agreements which are customary in the oil, gas and other mineral exploration, development and production business and in the business of processing of gas and gas condensate
production for the extraction of products therefrom; 
 (h) Liens on personal property (excluding the Capital Stock of any
Restricted Subsidiary) securing Indebtedness of the Company or any Restricted Subsidiary other than Funded Indebtedness; and 
 (i) Liens imposed by law or order as a result of any proceeding before any court or regulatory body that is being contested in good faith, and Liens which secure a judgment or other court-ordered award or settlement as to which the Company
has not exhausted its appellate rights. 
 “Original Issue Discount Debt Security” means any Debt Security which provides
for an amount less than the principal amount thereof to be due and payable upon a declaration of acceleration of the maturity thereof pursuant to Section 6.01. 
 “Outstanding”, when used with respect to any series of Debt Securities, means, as of the date of determination, all Debt Securities of that series theretofore authenticated and delivered under this
Indenture, except: 
 (a) Debt Securities of that series theretofore canceled by the Trustee or delivered to the Trustee for
cancellation; 
 (b) Debt Securities of that series for whose payment or redemption money in the necessary amount has been
theretofore deposited with the Trustee or any paying agent (other than the Company) in trust or set aside and segregated in trust by the Company (if the Company shall act as paying agent) for the Holders of such Debt Securities; provided,
that, if such Debt Securities are to be redeemed, notice of such redemption has been duly given pursuant to this Indenture or provision therefor satisfactory to the Trustee has been made; and 
 (c) Debt Securities of that series which have been paid pursuant to Section 2.11 or in exchange for or in lieu of which other Debt
Securities have been authenticated and delivered pursuant to this Indenture, other than any such Debt Securities in respect of which there shall have been presented to the Trustee proof satisfactory to it that such Debt Securities are held by a bona
fide purchaser in whose hands such Debt Securities are valid obligations of the Company; provided, however, that in determining whether the Holders of the requisite principal amount of the Outstanding Debt Securities of any series have
given any request, 

  

 -7- 

 
demand, authorization, direction, notice, consent or waiver hereunder, Debt Securities owned by the Company or any other obligor upon the Debt Securities or
any Affiliate of the Company or of such other obligor shall be disregarded and deemed not to be Outstanding, except that, in determining whether the Trustee shall be protected in relying upon any such request, demand, authorization, direction,
notice, consent or waiver, only Debt Securities which a Trust Officer of the Trustee actually knows to be so owned shall be so disregarded. Debt Securities so owned which have been pledged in good faith may be regarded as Outstanding if the pledgee
establishes to the satisfaction of the Trustee the pledgee’s right so to act with respect to such Debt Securities and that the pledgee is not the Company or any other obligor upon the Debt Securities or an Affiliate of the Company or of such
other obligor. In determining whether the Holders of the requisite principal amount of Outstanding Debt Securities have given any request, demand, authorization, direction, notice, consent or waiver hereunder, the principal amount of an Original
Issue Discount Debt Security that shall be deemed to be Outstanding for such purposes shall be the amount of the principal thereof that would be due and payable as of the date of such determination upon a declaration of acceleration of the maturity
thereof pursuant to Section 6.01. 
 “Pari Passu” as applied to the ranking of any Indebtedness of a Person in relation
to other Indebtedness of such Person, means that each such Indebtedness either (a) is not subordinate in right of payment to any Indebtedness or (b) is subordinate in right of payment to the same Indebtedness as is the other, and is so
subordinate to the same extent, and is not subordinate in right of payment to each other or to any Indebtedness as to which the other is not so subordinate. 
 “Person” means any individual, corporation, partnership, joint venture, incorporated or unincorporated association, joint-stock company, trust, unincorporated organization or government or other
agency or political subdivision thereof or other entity of any kind. 
 “Place of Payment” means, when used with respect to
the Debt Securities of any series, the place or places where the principal of, and premium, if any, and interest on, the Debt Securities of that series are payable as specified pursuant to Section 2.05. 
 “Predecessor Debt Security”, when used with respect to any particular Debt Security means every previous Debt Security evidencing all or
a portion of the same debt as that evidenced by such Debt Security; and, for the purposes of this definition, any Debt Security authenticated and delivered under Section 2.11 in exchange for or in lieu of a mutilated, destroyed, lost or stolen
Debt Security will be deemed to evidence the same debt as the mutilated, destroyed, lost or stolen Debt Security. 
 “Preferred
Stock”, as applied to the Capital Stock of any Person, means Capital Stock of any class or classes (however designated) which is preferred as to the payment of dividends or distributions, or as to the distribution of assets upon any
voluntary or involuntary liquidation or dissolution of such Person, over shares of Capital Stock of any other class of such Person. 
  

 -8- 

 “Redemption Date,” when used with respect to any Debt Security or portion thereof to be
redeemed, means the date fixed for such redemption by or pursuant to this Indenture or such Debt Security. 
 “Registrar”
has the meaning set forth in Section 2.09(a). 
 “Representative” means the trustee, agent or representative (if any)
for an issue of Senior Indebtedness. 
 “Restricted Subsidiary” means each of the existing Subsidiaries of the Company and
any Subsidiary of the Company that is a successor corporation of any of the existing Subsidiaries. The status of any Subsidiary of the Company as a Restricted Subsidiary shall continue, so long as it is a Subsidiary of the Company. 
 “Sale/Leaseback Transaction” means any arrangement with any Person providing for the leasing by the Company or any Restricted
Subsidiary, for a period of more than three years, of any real or tangible personal property, which property has been or is to be sold or transferred by the Company or such Restricted Subsidiary to such Person in contemplation of such leasing.

 “SEC” means the Securities and Exchange Commission. 
 “Securities Act” means the Securities Act of 1933, as amended, and any successor statute. 
 “Stated Maturity” means, with respect to any Debt Security, the date specified in such Debt Security as the fixed date on which the
payment of principal of such Debt Security is due and payable, including pursuant to any mandatory redemption provision (but excluding any provision providing for the repurchase of such Debt Security at the option of the holder thereof upon the
happening of any contingency beyond the control of the issuer unless such contingency has occurred). 
 “Subsidiary” of any
Person means any corporation of which at least a majority of the aggregate voting power of all classes of the Common Equity is owned by such Person directly or through one or more other Subsidiaries of such Person, and any entity other than a
corporation in which such Person, directly or indirectly, owns at least a majority of the Common Equity of such entity. 
 “TIA” means the Trust Indenture Act of 1939, as amended, as in effect on the date of this Indenture as originally executed and, to the extent required by law, as amended. 
 “Trust Officer” means any officer or assistant officer of the Trustee assigned by the Trustee to administer its corporate trust matters.

 “Trustee” initially means Deutsche Bank Trust Company Americas and any other Person or Persons appointed as such from
time to time pursuant to Section 7.08, and, subject to the provisions of Article VII, includes its or their successors and assigns. If at any time there is more than one such Person, “Trustee” as used with respect to the Debt
Securities of any series shall mean the Trustee with respect to the Debt Securities of that series. 
  

 -9- 

 “United States” means the United States of America (including the States and the
District of Columbia), its territories, its possessions and other areas subject to its jurisdiction. 
 “United States
Alien” means any Person who, for United States Federal income tax purposes, is a foreign corporation, a nonresident alien individual, a nonresident alien fiduciary of a foreign estate or trust, or a foreign partnership one or more members
of which is, for United States Federal income tax purposes, a foreign corporation, a nonresident alien individual or a nonresident alien fiduciary of a foreign estate or trust. 
 “U.S. Government Obligations” means direct obligations of the United States, obligations on which the payment of principal and interest
is fully guaranteed by the United States or obligations or guarantees for the payment of which the full faith and credit of the United States is pledged. 
 “Yield to Maturity” means the yield to maturity, calculated at the time of issuance of a series of Debt Securities, or, if applicable, at the most recent redetermination of interest on such series and
calculated in accordance with accepted financial practice. 
 Section 1.02 Other Definitions. 
  

			
	 Term
	  	Defined in Section
	 “Debt Security Register”
	  	2.09
	 “Defaulted Interest”
	  	2.18
	 “Event of Default”
	  	6.01
	 “Registrar”
	  	2.09
	 “Successor Company”
	  	10.01

 Section 1.03 Incorporation by Reference of TIA. Whenever this Indenture refers to a
provision of the TIA, the provision is incorporated by reference in and made a part of this Indenture. 
 Section 1.04 Rules of
Construction. Unless the context otherwise requires: 
 (a) a term has the meaning assigned to it; 
 (b) an accounting term not otherwise defined has the meaning assigned to it in accordance with GAAP; 
 (c) “or” is not exclusive; 
 (d) words in the singular include the plural, and in the plural include the singular; 
 (e)
provisions apply to successive events and transactions; and 
  

 -10- 

 (f) the principal amount of any noninterest bearing or other discount security at any
date shall be the principal amount thereof that would be shown on a balance sheet of the issuer dated such date prepared in accordance with GAAP. 
 ARTICLE II 
 DEBT SECURITIES 
 Section 2.01 Forms Generally. The Debt Securities of each series shall be in substantially the form set forth in this Article, or in such other form or forms as shall be established by or pursuant to a Board Resolution or in one or
more Indentures supplemental hereto, in each case with such appropriate insertions, omissions, substitutions and other variations as are required or permitted by this Indenture, and may have such letters, numbers or other marks of identification and
such legends or endorsements placed thereon as the Company may deem appropriate (and, if not contained in a supplemental Indenture entered into in accordance with Article IX, as are not prohibited by the provisions of this Indenture) or as may be
required or appropriate to comply with any law or with any rules made pursuant thereto or with any rules of any securities exchange on which such series of Debt Securities may be listed, or to conform to general usage, or as may, consistently
herewith, be determined by the officers executing such Debt Securities, as evidenced by their execution of the Debt Securities. If the form or forms of Debt Securities of any series is established by action taken pursuant to a Board Resolution,
either an Officers’ Certificate of the Company shall certify that such action shall have been duly taken or a copy of an appropriate record of such action shall be certified by the Secretary or an Assistant Secretary of the Company, and, in
either case, delivered to the Trustee at or prior to the delivery of the Company Order contemplated by Section 2.07 for the authentication and delivery of such Debt Securities. 
 The definitive Debt Securities of each series may be printed, lithographed or engraved on steel engraved borders or may be produced in any other manner,
all as determined by the officers executing such Debt Securities, as evidenced by their execution of such Debt Securities. 
 The forms of
Global Securities of any series shall have such provisions and legends as are customary for Debt Securities of such series in global form, including without limitation any legend required by the Depositary for the Debt Securities of such series.

 The Trustee’s Certificates of Authentication shall be in substantially the form set forth in this Article II. 
 Section 2.02 Form of Face of Security. [If the Debt Security is an Original Issue Discount Debt Security, insert—FOR PURPOSES OF SECTION 1275
OF THE UNITED STATES INTERNAL REVENUE CODE OF 1986, AS AMENDED, THE AMOUNT OF THE ORIGINAL ISSUE DISCOUNT IS                 , THE ISSUE DATE
IS                 , 20 [AND] [,] THE YIELD TO MATURITY IS                
,]                 
  

 -11- 

 [AND THE ORIGINAL ISSUE DISCOUNT FOR THE SHORT ACCRUAL PERIOD
IS                 AND THE METHOD USED TO DETERMINE THE YIELD THEREFOR IS                
]] 
 [Insert any other legend required by the United States Internal Revenue Code or the regulations thereunder]. 
 [If a Global Security,—insert legend required by Section 2.16 of the Indenture] [If applicable, insert—UNLESS THIS SECURITY IS PRESENTED
BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION, TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY SECURITY ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH
OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (AND ANY 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 ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.] 
 BILL
BARRETT CORPORATION 
  

			
	No.	  	$
		  	CUSIP No.

 BILL BARRETT CORPORATION, a Delaware corporation (herein called the “Company”, which
term includes any successor corporation under the Indenture hereinafter referred to), for value received, hereby promises to pay to             , or registered assigns, the principal sum
of             Dollars on         [If the Debt Security is to bear interest prior to Stated Maturity, insert—, and to pay interest thereon
from             or from the most recent Interest payment date to which interest has been paid or duly provided for, semi-annually
on             and     in each year, commencing             , at the rate
of         % per annum, until the principal hereof is paid or made available for payment. The interest so payable, and punctually paid or duly provided for, on any Interest payment date will, as provided in
such Indenture, be paid to the Person in whose name this Debt Security (or one or more Predecessor Debt Securities) is registered at the close of business on the regular record date for such interest, which shall be
the         or             (whether or not a Business Day), as the case may be, next preceding such Interest payment date. Any such interest not so
punctually paid or duly provided for will forthwith cease to be payable to the Holder on such regular record date and may either be paid to the Person in whose name this Debt Security (or one or more Predecessor Debt Securities) is registered at the
close of business on a special record date for the payment of such Defaulted Interest to be fixed by the Trustee, notice whereof shall be given to Holders of Debt Securities of this series not less than 10 days prior to such special record date, or
be paid at any time in any other lawful manner not inconsistent with the requirements of any securities exchange on which the Debt Securities of this series may be listed, and upon such notice as may be required by such exchange, all as more fully
provided in said Indenture]. 
  

 -12- 

 [If the Debt Security is not to bear interest prior to Maturity, insert—The principal of this Debt
Security shall not bear interest except in the case of a default in payment of principal upon acceleration, upon redemption or at Stated Maturity and in such case the overdue principal of this Debt Security shall bear interest at the rate
of     % per annum (to the extent that the payment of such interest shall be legally enforceable), which shall accrue from the date of such default in payment to the date payment of such principal has been made or duly provided
for. Interest on any overdue principal shall be payable on demand. Any such interest on any overdue principal that is not so paid on demand shall bear interest at the rate of     % per annum (to the extent that the payment of
such interest shall be legally enforceable), which shall accrue from the date of such demand for payment to the date payment of such interest has been made or duly provided for, and such interest shall also be payable on demand.] 
 [If a Global Security, insert—Payment of the principal of (and premium, if any) and [if applicable, insert—any such] interest on this Debt
Security by transfer of immediately available funds to a bank account in designated by the Holder in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts.]

 [If a definitive Debt Security, insert—Payment of the principal of (and premium, if any) and [if applicable, insert—any such]
interest on this Debt Security will be made at the office or agency of the Company maintained for that purpose in                 , in such coin or currency of the
United States of America as at the time of payment is legal tender for payment of public and private debts] [or subject to any laws or regulations applicable thereto and to the right of the Company (as provided in the Indenture) to rescind the
designation of any such Paying Agent, at the [main] offices of         in         and        
in         , or at such other offices or agencies as the Company may designate, by United States Dollar check drawn on, or transfer to a United States Dollar account maintained by the payee with, a bank in The
City of New York (so long as the applicable Paying Agency has received proper transfer instructions in writing at least [            ] days prior to the payment date)] [if applicable,
insert—; provided, however, that payment of interest may be made at the option of the Company by United States Dollar check mailed to the addresses of the Persons entitled thereto as such addresses shall appear in the Debt
Security Register] [or by transfer to a United States Dollar account maintained by the payee with a bank in The City of New York [state other Place of Payment] (so long as the applicable Paying Agent has received proper transfer instructions in
writing by the record date prior to the applicable Interest payment date)].] 
 Reference is hereby made to the further provisions of this
Debt Security 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 Trustee referred to on the reverse hereof by manual signature, this Debt Security shall not be entitled to any benefit under the Indenture or be valid or obligatory
for any purpose. 
 IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed under its corporate seal. 
  

 -13- 

									
	Dated:	 		 	
			
		 		 	BILL BARRETT CORPORATION
				
	Attest:	 		 	By:	 	
				
	 	 		 		 	

 Section 2.03 Section Form of Reverse of Security. This Debt Security is one of a duly
authorized issue of senior securities of the Company (herein called the “Debt Securities”), issued and to be issued in one or more series under an Indenture, dated as of
[            ] (herein called the “Indenture”), between the Company and Deutsche Bank Trust Company Americas (herein called the “Trustee,” which term includes any
successor trustee under the Indenture), to which Indenture and all indentures supplemental thereto reference is hereby made for a statement, of the respective rights, limitations of rights, duties and immunities thereunder of the Company, the
Trustee and the Holders of the Debt Securities and of the terms upon which the Debt Securities are, and are to be, authenticated and delivered. This Debt Security is one of the series designated on the face hereof [, limited in aggregate principal
amount to $         ]. 
 The Securities are senior unsecured obligations of the Company. 

[If applicable, insert—The Debt Securities of this series are subject to redemption upon not less than
            days’ notice by mail, [if applicable, insert,—(1) on             in any year commencing with the
year             and ending with the year             through operation of the sinking fund for this series at a Redemption Price
equal to 100% of the principal amount, and (2)] at any time [on or after                 , 20     ], as a whole or in part, at the election of the
Company, at the following Redemption 
 Prices (expressed as percentages of the principal amount): If redeemed [on or before
                , %, and if redeemed] during the 12-month period beginning         of the years indicated, 
  

							
	 Year
	  	Redemption
Price	  	Year	  	Redemption
Price
		  		  		  	
		  		  		  	
		  		  		  	

 and thereafter at a Redemption Price equal to     % of the principal amount, together in the
case of any such redemption [if applicable, insert—(whether through operation of the sinking fund or otherwise)] with accrued interest to the Redemption Date, but interest installments whose Stated Maturity is on or prior to such Redemption
Date will be payable to the Holders of such Debt Securities, or one or more Predecessor Debt Securities, of record at the close of business on the relevant record dates referred to on the face hereof, all as provided in the Indenture.] 

 

 -14- 

 [If applicable, insert—The Debt Securities of this series are subject to redemption upon not less
than         nor more than         days’ notice by mail, (1)             on in any year
commencing with the year             and ending with the year             through operation of the sinking fund for this series
at the Redemption Prices for redemption through operation of the sinking fund (expressed as percentages of the principal amount) set forth in the table below, and (2) at anytime [on or
after                 ], as a whole or in part, at the election of the Company, at the Redemption Prices for redemption otherwise than through operation of the sinking
fund (expressed as percentages of the principal amount) set forth in the table below: If redeemed during the 12-month period beginning             of the years indicated, 
  

			
	 Year
	  	 Redemption Price for Redemption Through
Operation of the Sinking
Fund

		  	
		  	
		  	

 and thereafter at a Redemption Price equal to     % of the principal amount, together in the
case of any such redemption (whether through operation of the sinking fund or otherwise) with accrued interest to the Redemption Date, but interest installments whose Stated Maturity is on or prior to such Redemption Date will be payable to the
Holders of such Debt Securities, or one or more Predecessor Debt Securities, of record at the close of business on the relevant record dates referred to on the face hereof, all as provided in the Indenture.] 
 [If applicable, insert—Notwithstanding the foregoing, the Company may not, prior
to             , redeem any Debt Securities of this series as contemplated by [Clause (2) of] the preceding paragraph as a part of, or in anticipation of, any refunding operation by
the application, directly or indirectly, of monies borrowed having an interest cost to the Company (calculated in accordance with generally accepted financial practice) of less than         % per annum.]

 [If applicable, insert—The sinking fund for this series provides for the redemption
on             in each year beginning with the year             and ending with the
year             of [not less than] $             [(“mandatory sinking fund”) and not more than
$             ] aggregate principal amount of Debt Securities of this series. [Debt Securities of this series acquired or redeemed by the Company otherwise than through [mandatory] sinking
fund payments may be credited against subsequent [mandatory] sinking fund payments otherwise required to be made—in the inverse order in which they become due.] 
 [If the Debt Securities are subject to redemption in part of any kind, insert—In the event of redemption of this Debt Security in part only, a new Debt Security or Debt Securities of this series for the
unredeemed portion hereof will be issued in the name of the Holder hereof upon the cancellation hereof.] 
 [If applicable, insert—The
Debt Securities of this series are not redeemable prior to Stated Maturity.] 
 [If the Debt Security is not an Original Issue Discount Debt
Security, insert—If an Event of Default with respect to Debt Securities of this series shall occur and be continuing, the principal of the Debt Securities of this series may be declared due and payable in the manner and with the effect provided
in the Indenture.] 
  

 -15- 

 [If the Debt Security is an Original Issue Discount Debt Security, insert—If an Event of Default
with respect to Debt Securities of this series shall occur and be continuing, an amount of principal of the Debt Securities of this series may be declared due and payable in the manner and with the effect provided in the Indenture. Such amount shall
be equal to—insert formula for determining the amount. Upon payment (i) of the amount of principal so declared due and payable and (ii) of interest on any overdue principal and overdue interest (in each case to the extent that the
payment of such interest shall be legally enforceable), all of the Company’s obligations in respect of the payment of the principal of and interest, if any, on the Debt Securities of this series shall terminate.] 
 The Indenture permits, with certain exceptions as therein provided, the amendment thereof and the modification of the rights and obligations of the
Company and the rights of the Holders of the Debt Securities of each series to be affected under the Indenture at any time by the Company and the Trustee with the consent of the Holders of a majority in principal amount of the Debt Securities at the
time Outstanding of each series to be affected. The Indenture also contains provisions permitting the Holders of specified percentages in principal amount of the Debt Securities of each series at the time Outstanding, on behalf of the Holders of all
Debt Securities of such series, to waive compliance by the Company with certain provisions of the Indenture and certain past defaults under the Indenture and their consequences. Any such consent or waiver by the Holder of this Debt Security shall be
conclusive and binding upon such Holder and upon all future Holders of this Debt Security and of any Debt Security issued upon the registration of transfer hereof or in exchange herefor or in lieu hereof, whether or not notation of such consent or
waiver is made upon this Debt Security. 
 No reference herein to the Indenture and no provision of this Debt Security or of the Indenture
shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of (and premium, if any) and interest on this Debt Security at the times, place(s) and rate, and in the coin or currency, herein
prescribed. 
 [If a Global Security, insert—This Global Security or portion hereof may not be exchanged for definitive Debt Securities
of this series except in the limited circumstances provided in the Indenture. 
 The holders of beneficial interests in this Global Security
will not be entitled to receive physical delivery of definitive Debt Securities except as described in the Indenture and will not be considered the Holders thereof for any purpose under the Indenture.] 
 [If a definitive Debt Security, insert—As provided in the Indenture and subject to certain limitations therein set forth, the transfer of this Debt
Security is registerable in the Security Register, upon surrender of this Debt Security for registration of transfer at the office or agency of the Company in [if applicable, insert—any place where the principal of and any premium and interest
on this Debt Security are payable] [if applicable, insert—The City of New York[, or, subject to any laws or regulations applicable thereto and to the right of the Company (limited as provided in the Indenture) to rescind the designation of any
such transfer agent, at the 

  

 -16- 

 
[main] offices of in and in or at such other offices or agencies as the Company may designate]], duly endorsed by, or accompanied by a written instrument of
transfer in form satisfactory to the Company and the Registrar duly executed by, the Holder hereof or his or her attorney duly authorized in writing, and thereupon one or more new Debt Securities of this series and of like tenor, of authorized
denominations and for the same aggregate principal amount, will be issued to the designated transferee or transferees.] 
 The Debt
Securities of this series are issuable only in registered form without coupons in denominations of U.S. $ and any integral multiple thereof. As provided in the Indenture and subject to certain limitations therein set forth, Debt Securities of this
series are exchangeable for a like aggregate principal amount of Debt Securities of this series of a different authorized denomination, as requested by the Holder surrendering the same. 
 No service charge shall be made for any such registration of transfer or exchange, but the Company may require payment of a sum sufficient to cover any
tax or other governmental charge payable in connection therewith. 
 Prior to due presentment of this Debt Security for registration of
transfer, the Company, the Trustee and any agent of the Company or the Trustee may treat the Person in whose name this Debt Security is registered as the owner hereof for all purposes, whether or not this Debt Security be overdue, and neither the
Company, the Trustee nor any such agent shall be affected by notice to the contrary. 
 No recourse under or upon any obligation, covenant or
agreement of or contained in the Indenture or of or contained in any Debt Security, or for any claim based thereon or otherwise in respect thereof, or in any Debt Security, or because of the creation of any indebtedness represented thereby, shall be
had against any incorporator, stockholder, officer or director, as such, past, present or future, of the Company or of any successor Person, either directly or through the Company or any successor Person, whether by virtue of any constitution,
statute or rule of law, or by the enforcement of any assessment, penalty or otherwise; it being expressly understood that all such liability is hereby expressly waived and released by the acceptance hereof and as a condition of, and as part of the
consideration for, the Debt Securities and the execution of the Indenture. 
 The Indenture provides that the Company (a) will be
discharged from any and all obligations in respect of the Debt Securities (except for certain obligations described in the Indenture), or (b) need not comply with certain restrictive covenants of the Indenture, in each case if the Company
deposits, in trust, with the Trustee money or U.S. Government Obligations (or a combination thereof) which through the payment of interest thereon and principal thereof in accordance with their terms will provide money, in an amount sufficient to
pay all the principal of and interest on the Debt Securities, but such money need not be segregated from other funds except to the extent required by law. 
 All terms used in this Debt Security which are defined in the Indenture shall have the meanings assigned to them in the Indenture. 
 The Debt Securities are governed by the laws of The State of New York. 
  

 -17- 

 Section 2.04 Form of Trustee’s Certificate of Authentication. The Trustee’s Certificate
of Authentication on all Debt Securities authenticated by the Trustee shall be in substantially the following form: 
 TRUSTEE’S
CERTIFICATE OF AUTHENTICATION 
 This is one of the Debt Securities of the series designated therein referred to in the within-mentioned
Indenture. 
  

			
	 DEUTSCHE BANK TRUST COMPANY AMERICAS,
 as Trustee

		
	By:	 	 
		 	Authorized Signature

 Section 2.05 Principal Amount; Issuable in Series. The aggregate principal amount of
Debt Securities which may be issued, executed, authenticated, delivered and outstanding under this Indenture is unlimited. 
 The Debt
Securities may be issued in one or more series. There shall be established, without the approval of any Holders, in or pursuant to a Board Resolution of the Company and set forth in an Officers’ Certificate of the Company, or established in one
or more Indentures supplemental hereto, prior to the issuance of Debt Securities of any series any or all of the following: 
 (a) the title of the Debt Securities of the series (which shall distinguish the Debt Securities of the series from all other Debt Securities); 
 (b) any limit upon the aggregate principal amount of the Debt Securities of the series which may be authenticated and delivered under this Indenture (except for Debt Securities authenticated and delivered upon
registration or transfer of, or in exchange for, or in lieu of, other Debt Securities of the series pursuant to this Article II); 
 (c) the date or dates or the method or methods, if any, by which such date or dates shall be determined, on which the principal and premium, if any, of the Debt Securities of the series are payable; 
 (d) the rate or rates (which may be fixed or variable) at which the Debt Securities of the series shall bear interest, if any, or the
method or methods, if any, of determining such rate or rates, the date or dates from which such interest shall accrue, the Interest payment dates on which such interest shall be payable, or the method by which such date will be determined, the
record dates for the determination of Holders thereof to whom such interest is payable; the notice, if any, to Holders regarding the determination of interest on a floating rate Debt Security and the manner of giving such notice, and the basis upon
which interest will be calculated if other than that of a 360-day year of twelve thirty-day months; 
  

 -18- 

 (e) the right, if any, to extend the Interest payment periods and the duration of any
such extension, including the maximum consecutive period, if any, during which Interest payment periods may be extended; 
 (f) the place or places, if any, in addition to or instead of the corporate trust office of the Trustee, where the principal of, and premium, if any, and interest on, Debt Securities of the series shall be payable; 
 (g) the price or prices at which, the period or periods within which and the terms and conditions upon which Debt Securities of the series
may be redeemed, in whole or in part, at the option of the Company or otherwise; 
 (h) the obligation, if any, of the Company
to redeem, purchase or repay Debt Securities of the series pursuant to any sinking fund or analogous provisions or at the option of a Holder thereof, and the price or prices at which and the period or periods within which and the terms and
conditions upon which Debt Securities of the series shall be redeemed, purchased or repaid, in whole or in part, pursuant to such obligations; 
 (i) the terms, if any, upon which the Debt Securities of the series may be convertible into or exchanged for Common Equity, Preferred Stock (which may be represented by depositary shares), other Debt Securities or
warrants for Common Equity, Preferred Stock or Indebtedness or other securities of any kind of the Company or any other obligor and the terms and conditions upon which such conversion or exchange shall be effected, including the initial conversion
or exchange price or rate, the conversion or exchange period and any other provision in addition to or in lieu of those described herein; 
 (j) if other than denominations of $1,000 and any integral multiple thereof, the denominations in which Debt Securities of the series shall be issuable; 
 (k) if the amount of principal of or any premium or interest on Debt Securities of the series may be determined with reference to an index
or pursuant to a formula, the manner in which such amounts will be determined and paid or payable; 
 (l) if the principal
amount payable at the Stated Maturity of Debt Securities of the series will not be determinable as of any one or more dates prior to such Stated Maturity, the amount which will be deemed to be such principal amount as of any such date for any
purpose, including the principal amount thereof which will be due and payable upon any maturity other than the Stated Maturity or which will be deemed to be Outstanding as of any such date (or, in any such case, the manner in which such deemed
principal amount is to be determined); 
 (m) any changes or additions to Article XI, including the addition of additional
covenants that may be subject to the covenant defeasance option pursuant to Section 11.02(b); 
  

 -19- 

 (n) if other than the principal amount thereof, the portion of the principal amount of
Debt Securities of the series which shall be payable upon declaration of acceleration of the maturity thereof pursuant to Section 6.01 or provable in bankruptcy pursuant to Section 6.02; 
 (o) whether or not the Debt Securities of such series shall be issued as Original Issue Discount Debt Securities and the terms thereof,
including the portion of the principal amount thereof which shall be payable upon declaration of acceleration of the maturity thereof pursuant to Section 6.01; 
 (p) any addition to or change in the Events of Default with respect to the Debt Securities of the series and any change in the right of
the Trustee or the Holders to declare the principal of, and premium and interest on, such Debt Securities due and payable; 
 (q) if the Debt Securities of the series shall be issued in whole or in part in the form of a Global Security or Securities, the terms and conditions, if any, upon which such Global Security or Securities may be exchanged in whole or in
part for other individual Debt Securities in definitive registered form; and the Depositary for such Global Security or Securities and the form of any legend or legends to be borne by any such Global Security or Securities in addition to or in lieu
of the legend referred to in Section 2.16(a); 
 (r) any trustees, authenticating or paying agents, transfer agents or
registrars; 
 (s) the applicability of, and any addition to or change in the covenants and definitions currently set forth in
this Indenture or in the terms currently set forth in Article X, including conditioning any merger, conveyance, transfer or lease permitted by Article X upon the satisfaction of an Indebtedness coverage standard by the Company and Successor Company
(as defined in Article X); 
 (t) whether the Debt Securities will be issued pursuant to medium term note program; 

(u) with regard to Debt Securities of the series that do not bear interest, the dates for certain required reports to the Trustee; and

 (v) any other terms of the Debt Securities of the series (which terms shall not be prohibited by the provisions of this
Indenture). 
 All Debt Securities of any one series shall be substantially identical except as to denomination and except as may otherwise
be provided in or pursuant to such resolution of the Board of Directors and as set forth in such Officers’ Certificate or in any such Indenture supplemental hereto. 
 Section 2.06 Execution of Debt Securities. The Debt Securities shall be signed on behalf of the Company by its Chairman of the Board, Chief Executive Officer, President, a Vice President, a Treasurer or an
Assistant Treasurer and by its Secretary or an Assistant Secretary. Such signatures upon the Debt Securities may be the manual or facsimile signatures of the present or any future such authorized officers and may be imprinted or otherwise reproduced
on the Debt Securities. The seal of the Company, if any, may be in the form of a facsimile thereof and may be impressed, affixed, imprinted or otherwise reproduced on the Debt Securities. 
  

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 Only such Debt Securities as shall bear thereon a certificate of authentication substantially in the form
hereinbefore recited, signed manually by the Trustee or by any authenticating agent with respect to such Debt Securities, shall be entitled to the benefits of this Indenture or be valid or obligatory for any purpose. Such certificate executed by the
Trustee, or by any authenticating agent appointed by the Trustee with respect to such Debt Securities, upon any Debt Security executed by the Company shall be conclusive evidence that the Debt Security so authenticated has been duly authenticated
and delivered hereunder. 
 In case any officer of the Company who shall have signed any of the Debt Securities shall cease to be such
officer before the Debt Securities so signed shall have been authenticated and delivered by the Trustee, or disposed of by the Company, such Debt Securities nevertheless may be authenticated and delivered or disposed of as though the Person who
signed such Debt Securities had not ceased to be such officer of the Company; and any Debt Security may be signed on behalf of the Company by such Persons as, at the actual date of the execution of such Debt Security, shall be the proper officers of
the Company, although at the date of such Debt Security or of the execution of this Indenture any such Person was not such officer. 
 Section 2.07 Authentication and Delivery of Debt Securities. At any time and from time to time after the execution and delivery of this Indenture, the Company may deliver Debt Securities of any series executed by the Company to the
Trustee for authentication, together with a Company Order for the authentication, delivery of such Debt Securities and the Trustee, in accordance with such Company Order, shall thereupon authenticate and deliver said Debt Securities. In
authenticating such Debt Securities, and accepting the additional responsibilities under this Indenture in relation to such Debt Securities, the Trustee shall be entitled to receive, and (subject to Section 7.01) shall be fully protected in
relying upon: 
 (a) a copy of any resolution or resolutions of the Board of Directors, certified by the Secretary or
Assistant Secretary of the Company, authorizing the terms of issuance of any series of Debt Securities; 
 (b) an executed
supplemental Indenture, if any; 
 (c) an Officers’ Certificate; and 
 (d) an Opinion of Counsel prepared in accordance with Section 12.05 which shall also state: 
 (i) that the form of such Debt Securities has been established by or pursuant to a Board Resolution of the Company or by a supplemental
Indenture as permitted by Section 2.01 in conformity with the provisions of this Indenture; 
 (ii) that the terms of
such Debt Securities have been established by or pursuant to a Board Resolution of the Company or by a supplemental Indenture as permitted by Section 2.05 in conformity with the provisions of this Indenture; 
  

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 (iii) that such Debt Securities, when authenticated and delivered by the Trustee and
issued by the Company in the manner and subject to any conditions specified in such Opinion of Counsel, will constitute valid and legally binding obligations of the Company, enforceable in accordance with their terms except as the enforceability
thereof may be limited by bankruptcy, insolvency or similar laws affecting the enforcement of creditors’ rights generally and rights of acceleration and the availability of equitable remedies may be limited by equitable principles of general
applicability and such counsel need express no opinion with regard to the enforceability of Section 7.06; 
 (iv) that
the Company has the corporate power to issue such Debt Securities and has duly taken all necessary corporate action with respect to such issuance; 
 (v) that authentication and delivery of such Debt Securities and the execution and delivery of any supplemental Indenture will not violate the terms of this Indenture; and 
 (vi) such other matters as the Trustee may reasonably request. 
 Such Opinion of Counsel need express no opinion as to whether a court in the United States would render a money judgment in a currency other than that of the United States. 
 The Trustee shall have the right to decline to authenticate and deliver any Debt Securities under this Section 2.07 if the Trustee, being advised by
counsel, determines that such action may not lawfully be taken or if the Trustee in good faith by its board of directors or trustees, executive committee or a trust committee of directors, trustees or vice presidents shall determine that such action
would expose the Trustee to personal liability to existing Holders. 
 The Trustee may appoint an authenticating agent reasonably acceptable
to the Company to authenticate Debt Securities of any series. Unless limited by the terms of such appointment, an authenticating agent may authenticate Debt Securities whenever the Trustee may do so. Each reference in this Indenture to
authentication by the Trustee includes authentication by such agent. An authenticating agent has the same rights as any Registrar, paying agent or agent for service of notices and demands. 
 Unless otherwise provided in the form of Debt Security for any series, each Debt Security shall be dated the date of its authentication. 
 Section 2.08 Denomination of Debt Securities. The Debt Securities of each series shall be issuable in registered form without coupons in such
denominations as shall be specified or contemplated by Section 2.05. In the absence of any such specification with respect to the Debt Securities of any series, the Debt Securities of such series shall be issuable in denominations of $1,000 and
any integral multiple thereof. 
 Section 2.09 Registration of Transfer and Exchange. The Company shall keep or cause to be kept a
register for each series of Debt Securities issued hereunder (hereinafter collectively referred to as the “Debt Security Register”), in which, subject to such reasonable regulations as it may prescribe, the Company shall provide for
the registration of Debt Securities and the transfer of Debt 

  

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Securities as in this Article II provided. At all reasonable times the Debt Security Register shall be open for inspection by the Trustee. Subject to
Section 2.16, upon due presentment for registration of transfer of any Debt Security at any office or agency to be maintained by the Company in accordance with the provisions of Section 4.02, the Company shall execute and the Trustee shall
authenticate and deliver in the name of the transferee or transferees a new Debt Security or Debt Securities of authorized denominations for a like aggregate principal amount. 
 Unless and until otherwise determined by the Company by resolution of the Board of Directors, the register of the Company for the purpose of
registration, exchange or registration of transfer of the Debt Securities shall be kept at the corporate trust office of the Trustee and, for this purpose, the Trustee shall be designated “Registrar”. 
 (a) Debt Securities of any series (other than a Global Security, except as set forth below) may be exchanged for a like aggregate principal amount of
Debt Securities of the same series of other authorized denominations. Subject to Section 2.16, Debt Securities to be exchanged shall be surrendered at the office or agency to be maintained by the Company as provided in Section 4.02, and
the Company shall execute and the Trustee shall authenticate and deliver in exchange therefor the Debt Security or Debt Securities which the Holder making the exchange shall be entitled to receive. 
 All Debt Securities presented or surrendered for registration of transfer, exchange or payment shall (if so required by the Company, the Trustee or the
Registrar) be duly endorsed or be accompanied by a written instrument or instruments of transfer, in form satisfactory to the Company, the Trustee and the Registrar, duly executed by the Holder or his attorney duly authorized in writing. 

All Debt Securities issued in exchange for or upon transfer of Debt Securities shall be the valid obligations of the Company, evidencing the same
debt, and entitled to the same benefits under this Indenture as the Debt Securities surrendered for such exchange or transfer. 
 No service
charge shall be made for any exchange or registration of transfer of Debt Securities (except as provided by Section 2.11), but the Company may require payment of a sum sufficient to cover any tax, fee, assessment or other governmental charge
that may be imposed in relation thereto, other than those expressly provided in this Indenture to be made at the Company’s own expense or without expense or without charge to the Holders. 
 The Company and Registrar shall not be required (i) to issue, register the transfer of or exchange any Debt Securities for a period of 15 days next
preceding any mailing of notice of redemption of Debt Securities of such series or (ii) to register the transfer of or exchange any Debt Securities selected, called or being called for redemption. 
 Prior to the due presentation for registration of transfer of any Debt Security, the Company, the Trustee, any paying agent or any Registrar may deem and
treat the Person in whose name a Debt Security is registered as the absolute owner of such Debt Security for the purpose of receiving payment of principal of, and premium, if any, and interest on, such Debt Security and for all other purposes
whatsoever, whether or not such Debt Security is overdue, and none of the Company, the Trustee, any paying agent or Registrar shall be affected by notice to the contrary. 
  

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 None of the Company, the Trustee, any agent of the Trustee, any paying agent or any Registrar will have
any responsibility or liability for any aspect of the records relating to, or payments made on account of, beneficial ownership interests of a Global Security or for maintaining, supervising or reviewing any records relating to such beneficial
ownership interests. 
 Section 2.10 Temporary Debt Securities. Pending the preparation of definitive Debt Securities of any series,
the Company may execute and the Trustee shall authenticate and deliver temporary Debt Securities (printed, lithographed, photocopied, typewritten or otherwise produced) of any authorized denomination, and substantially in the form of the definitive
Debt Securities in lieu of which they are issued, in registered form and with such omissions, insertions and variations as may be appropriate for temporary Debt Securities all as may be determined by the Company with the concurrence of the Trustee.
Temporary Debt Securities may contain such reference to any provisions of this Indenture as may be appropriate. Every temporary Debt Security shall be executed by the Company and be authenticated by the Trustee upon the same conditions and in
substantially the same manner, and with like effect, as the definitive Debt Securities. 
 If temporary Debt Securities of any series are
issued, the Company will cause definitive Debt Securities of such series to be prepared without unreasonable delay. After the preparation of definitive Debt Securities of such series, the temporary Debt Securities of such series shall be
exchangeable for definitive Debt Securities of such series upon surrender of the temporary Debt Securities of such series at the office or agency of the Company at a Place of Payment for such series, without charge to the Holder thereof, except as
provided in Section 2.09 in connection with a transfer, and upon surrender for cancellation of any one or more temporary Debt Securities of any series, the Company shall execute and the Trustee shall authenticate and deliver in exchange
therefor a like principal amount of definitive Debt Securities of the same series of authorized denominations and of like tenor. Until so exchanged, temporary Debt Securities of any series shall in all respects be entitled to the same benefits under
this Indenture as definitive Debt Securities of such series. 
 Upon any exchange of a portion of a temporary Global Security for a
definitive Global Security or for the individual Debt Securities represented thereby pursuant to Section 2.09 or this Section 2.10, the temporary Global Security shall be endorsed by the Trustee to reflect the reduction of the principal
amount evidenced thereby, whereupon the principal amount of such temporary Global Security shall be reduced for all purposes by the amount to be exchanged and endorsed. 
 Section 2.11 Mutilated, Destroyed, Lost or Stolen Debt Securities. If (a) any mutilated Debt Security is surrendered to the Trustee at its corporate trust office or (b) the Company and the Trustee
receive evidence to their satisfaction of the destruction, loss or theft of any Debt Security, and there is delivered to the Company and the Trustee such security or indemnity as may be required by them to save each of them and any paying agent
harmless, and neither the Company nor the Trustee receives notice that such Debt Security has been acquired by a bona fide purchaser, then the Company shall execute and, upon a Company Order, the Trustee shall 

  

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authenticate and deliver, in exchange for or in lieu of any such mutilated, destroyed, lost or stolen Debt Security, a new Debt Security of the same series
of like tenor, form, terms and principal amount, bearing a number not contemporaneously Outstanding. Upon the issuance of any substituted Debt Security, the Company may require the payment of a sum sufficient to cover any tax, fee, assessment or
other governmental charge that may be imposed in relation thereto and any other expenses (including the fees and expenses of the Trustee) connected therewith. In case any Debt Security which has matured or is about to mature or which has been called
for redemption shall become mutilated or be destroyed, lost or stolen, the Company may, instead of issuing a substituted Debt Security, pay or authorize the payment of the same (without surrender thereof except in the case of a mutilated Debt
Security) if the applicant for such payment shall furnish the Company and the Trustee with such security or indemnity as either may require to save it harmless from all risk, however remote, and, in case of destruction, loss or theft, evidence to
the satisfaction of the Company and the Trustee of the destruction, loss or theft of such Debt Security and of the ownership thereof. 
 Every substituted Debt Security of any series, issued pursuant to the provisions of this Section 2.11 by virtue of the fact that any Debt Security is destroyed, lost or stolen shall constitute an original additional contractual
obligation of the Company, whether or not the destroyed, lost or stolen Debt Security shall be found at any time, and shall be entitled to all the benefits of this Indenture equally and proportionately with any and all other Debt Securities of that
series duly issued hereunder. All Debt Securities shall be held and owned upon the express condition that the foregoing provisions are exclusive with respect to the replacement or payment of mutilated, destroyed, lost or stolen Debt Securities, and
shall preclude any and all other rights or remedies, notwithstanding any law or statute existing or hereafter enacted to the contrary with respect to the replacement or payment of negotiable instruments or other securities without their surrender.

 Section 2.12 Cancellation of Surrendered Debt Securities. All Debt Securities surrendered for payment, redemption, registration of
transfer or exchange shall, if surrendered to the Company or any paying agent or a Registrar, be delivered to the Trustee for cancellation by it, or if surrendered to the Trustee, shall be canceled by it, and no Debt Securities shall be issued in
lieu thereof except as expressly permitted by any of the provisions of this Indenture. All canceled Debt Securities held by the Trustee shall be destroyed (subject to the record retention requirements of the Exchange Act) and certification of their
destruction delivered to the Company, unless otherwise directed. On request of the Company, the Trustee shall deliver to the Company canceled Debt Securities held by the Trustee. If the Company shall acquire any of the Debt Securities, however, such
acquisition shall not operate as a redemption or satisfaction of the indebtedness represented thereby unless and until the same are delivered or surrendered to the Trustee for cancellation. The Company may not issue new Debt Securities to replace
Debt Securities it has redeemed, paid or delivered to the Trustee for cancellation. 
 Section 2.13 Provisions of the Indenture and Debt
Securities for the Sole Benefit of the Parties and the Holders. Nothing in this Indenture or in the Debt Securities, expressed or implied, shall give or be construed to give to any Person, other than the parties hereto, the Holders or any
Registrar or paying agent, any legal or equitable right, remedy or claim under or in respect of this Indenture, or under any covenant, condition or provision herein contained; all its covenants, conditions and provisions being for the sole benefit
of the parties hereto, the Holders and any Registrar and paying agents. 
  

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 Section 2.14 Payment of Interest; Interest Rights Preserved. 
 (a) Interest on any Debt Security that is payable and is punctually paid or duly provided for on any Interest payment date shall be paid
to the Person in whose name such Debt Security is registered at the close of business on the regular record date for such interest notwithstanding the cancellation of such Debt Security upon any transfer or exchange subsequent to the regular record
date. Payment of interest on Debt Securities shall be made at the corporate trust office of the Trustee (except as otherwise specified pursuant to Section 2.05), or at the option of the Company, by check mailed to the address of the Person
entitled thereto as such address shall appear in the Debt Security Register or, if provided pursuant to Section 2.05 and in accordance with arrangements satisfactory to the Trustee, at the option of the Holder by wire transfer to an account
designated by the Holder. 
 (b) Subject to the foregoing provisions of this Section 2.14 and Section 2.18, each
Debt Security of a particular series delivered under this Indenture upon registration of transfer of or in exchange for or in lieu of any other Debt Security of the same series shall carry the rights to interest accrued and unpaid, and to accrue,
which were carried by such other Debt Security. 
 Section 2.15 Wire Transfers. Notwithstanding any other provision to the contrary in
this Indenture, the Company may make any payment of monies required to be deposited with the Trustee on account of principal of, or premium, if any, or interest on, the Debt Securities (whether pursuant to optional or mandatory redemption payments,
interest payments or otherwise) by wire transfer in immediately available funds to an account designated by the Trustee on or before the date such monies are to be paid to the Holders of the Debt Securities in accordance with the terms hereof.

 Section 2.16 Securities Issuable in the Form of a Global Security. 
 (a) If the Company shall establish pursuant to Sections 2.01 and 2.05 that the Debt Securities of a particular series are to be issued in
whole or in part in the form of one or more Global Securities, then the Company shall execute and the Trustee or its agent shall, in accordance with Section 2.07, authenticate and deliver, such Global Security or Securities, which shall
represent, and shall be denominated in an amount equal to the aggregate principal amount of, the Outstanding Debt Securities of such series to be represented by such Global Security or Securities, or such portion thereof as the Company shall specify
in an Officer’s Certificate, shall be registered in the name of the Depositary for such Global Security or Securities or its nominee, shall be delivered by the Trustee or its agent to the Depositary or pursuant to the Depositary’s
instruction and shall bear a legend substantially to the following effect: 
 “THIS SECURITY IS A GLOBAL SECURITY WITHIN
THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A NOMINEE THEREOF. THIS SECURITY MAY NOT BE TRANSFERRED TO, OR REGISTERED OR EXCHANGED FOR SECURITIES REGISTERED 

  

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IN THE NAME OF, ANY PERSON OTHER THAN THE DEPOSITARY OR A NOMINEE THEREOF AND NO SUCH TRANSFER MAY BE REGISTERED, EXCEPT IN THE LIMITED CIRCUMSTANCES
DESCRIBED IN THE INDENTURE. EVERY SECURITY AUTHENTICATED AND DELIVERED UPON REGISTRATION OF TRANSFER OF, OR IN EXCHANGE FOR OR IN LIEU OF, THIS SECURITY SHALL BE A GLOBAL SECURITY SUBJECT TO THE FOREGOING, EXCEPT IN SUCH LIMITED CIRCUMSTANCES.”

 (b) Notwithstanding any other provision of this Section 2.16 or of Section 2.09 to the contrary, and subject to
the provisions of paragraph (c) below, unless the terms of a Global Security expressly permit such Global Security to be exchanged in whole or in part for definitive Debt Securities in registered form, a Global Security may be transferred, in
whole but not in part and in the manner provided in Section 2.09, only by the Depositary to a nominee of the Depositary for such Global Security, or by a nominee of the Depositary to the Depositary or another nominee of the Depositary, or by
the Depositary or a nominee of the Depositary to a successor Depositary for such Global Security selected or approved by the Company, or to a nominee of such successor Depositary. 
 (c) (i) If at any time the Depositary for a Global Security or Securities notifies the Company that it is unwilling or unable to continue
as Depositary for such Global Security or Securities or if at any time the Depositary for the Debt Securities for such series shall no longer be eligible or in good standing under the Exchange Act or other applicable statute, rule or regulation, the
Company shall appoint a successor Depositary with respect to such Global Security or Securities. If a successor Depositary for such Global Security or Securities is not appointed by the Company within 90 days after the Company receives such notice
or becomes aware of such ineligibility, the Company shall execute, and the Trustee or its agent, upon receipt of a Company Order for the authentication and delivery of such individual Debt Securities of such series in exchange for such Global
Security, will authenticate and deliver, individual Debt Securities of such series of like tenor and terms in definitive form in an aggregate principal amount equal to the principal amount of the Global Security in exchange for such Global Security
or Securities. 
 (ii) The Company may at any time and in its sole discretion determine that the Debt Securities of any series
or portion thereof issued or issuable in the form of one or more Global Securities shall no longer be represented by such Global Security or Securities. In such event the Company will execute, and the Trustee, upon receipt of a Company Order for the
authentication and delivery of individual Debt Securities of such series in exchange in whole or in part for such Global Security, will authenticate and deliver individual Debt Securities of such series of like tenor and terms in definitive form in
an aggregate principal amount equal to the principal amount of such series or portion thereof in exchange for such Global Security or Securities. 
 (iii) If specified by the Company pursuant to Sections 2.01 and 2.05 with respect to Debt Securities issued or issuable in the form of a Global Security, the Depositary for such Global Security may surrender such
Global Security in exchange in whole or in part for individual Debt Securities of such series of like tenor and terms in definitive form on such terms as are acceptable to the Company, the Trustee and such Depositary. Thereupon, the Company shall
execute, and the Trustee 

  

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or its agent upon receipt of a Company Order for the authentication and delivery of definitive Debt Securities of such series shall authenticate and deliver,
without service charge, to each Person specified by such Depositary a new Debt Security or Securities of the same series of like tenor and terms and of any authorized denomination as requested by such Person in aggregate principal amount equal to
and in exchange for such Person’s beneficial interest in the Global Security; and to such Depositary a new Global Security of like tenor and terms and in an authorized denomination equal to the difference, if any, between the principal amount
of the surrendered Global Security and the aggregate principal amount of Debt Securities delivered to Holders thereof. 
 (iv)
In any exchange provided for in any of the preceding three paragraphs, the Company will execute and the Trustee or its agent will authenticate and deliver individual Debt Securities. Upon the exchange of the entire principal amount of a Global
Security for individual Debt Securities, such Global Security shall be canceled by the Trustee or its agent. Except as provided in the preceding paragraph, Debt Securities issued in exchange for a Global Security pursuant to this Section 2.16
shall be registered in such names and in such authorized denominations as the Depositary for such Global Security, pursuant to instructions from its direct or indirect participants or otherwise, shall instruct the Trustee or the Registrar. The
Trustee or the Registrar shall deliver such Debt Securities to the Persons in whose names such Debt Securities are so registered. 
 (v) Payments in respect of the principal of and interest on any Debt Securities registered in the name of the Depositary or its nominee will be payable to the Depositary or such nominee in its capacity as the registered owner of such Global
Security. The Company and the Trustee may treat the Person in whose name the Debt Securities, including the Global Security, are registered as the owner thereof for the purpose of receiving such payments and for any and all other purposes
whatsoever. None of the Company, the Trustee, any Registrar, the paying agent or any agent of the Company or the Trustee will have any responsibility or liability for any aspect of the records relating to or payments made on account of the
beneficial ownership interests of the Global Security by the Depositary or its nominee or any of the Depositary’s direct or indirect participants, or for maintaining, supervising or reviewing any records of the Depositary, its nominee or any of
its direct or indirect participants relating to the beneficial ownership interests of the Global Security, the payments to the beneficial owners of the Global Security of amounts paid to the Depositary or its nominee, or any other matter relating to
the actions and practices of the Depositary, its nominee or any of its direct or indirect participants. None of the Company, the Trustee or any such agent will be liable for any delay by the Depositary, its nominee, or any of its direct or indirect
participants in identifying the beneficial owners of the Debt Securities, and the Company and the Trustee may conclusively rely on, and will be protected in relying on, instructions from the Depositary or its nominee for all purposes (including with
respect to the registration and delivery, and the respective principal amounts, of the Debt Securities to be issued). 
  

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 Section 2.17 Medium Term Securities. Notwithstanding any contrary provision herein, if all Debt
Securities of a series are not to be originally issued at one time, it shall not be necessary for the Company to deliver to the Trustee an Officers’ Certificate, Board Resolutions, supplemental Indenture, Opinion of Counsel or written order or
any other document otherwise required pursuant to Section 2.01, 2.05, 2.07 or 12.05 at or prior to the time of authentication of each Debt Security of such series if such documents are delivered to the Trustee or its agent at or prior to the
authentication upon original issuance of the first such Debt Security of such series to be issued; provided, that any subsequent request by the Company to the Trustee to authenticate Debt Securities of such series upon original issuance shall
constitute a representation and warranty by the Company that, as of the date of such request, the statements made in the Officers’ Certificate delivered pursuant to Section 2.07 or 12.05 shall be true and correct as if made on such date
and that the Opinion of Counsel delivered at or prior to such time of authentication of an original issuance of Debt Securities shall specifically state that it shall relate to all subsequent issuances of Debt Securities of such series that are
identical to the Debt Securities issued in the first issuance of Debt Securities of such series. 
 A Company Order delivered by the Company
to the Trustee in the circumstances set forth in the preceding paragraph, may provide that Debt Securities which are the subject thereof will be authenticated and delivered by the Trustee or its agent on original issue from time to time upon the
telephonic or written order of Persons designated in such written order (any such telephonic instructions to be promptly confirmed in writing by such Person) and that such Persons are authorized to determine, consistent with the Officers’
Certificate, supplemental Indenture or resolution of the Board of Directors relating to such written order, such terms and conditions of such Debt Securities as are specified in such Officers’ Certificate, supplemental Indenture or such
resolution. 
 Section 2.18 Defaulted Interest. Any interest on any Debt Security of a particular series which is payable, but is not
punctually paid or duly provided for, on the dates and in the manner provided in the Debt Securities of such series and in this Indenture (herein called “Defaulted Interest”) shall forthwith cease to be payable to the Holder thereof
on the relevant record date by virtue of having been such Holder, and such Defaulted Interest may be paid by the Company, at its election in each case, as provided in clause (i) or (ii) below: 
 (i) The Company may elect to make payment of any Defaulted Interest to the Persons in whose names the Debt Securities of such series are
registered at the close of business on a special record date for the payment of such Defaulted Interest, which shall be fixed in the following manner. The Company shall notify the Trustee in writing of the amount of Defaulted Interest proposed to be
paid on each such Debt Security of such series and the date of the proposed payment, and at the same time the Company shall deposit with the Trustee an amount of money equal to the aggregate amount proposed to be paid in respect of such Defaulted
Interest or shall make arrangements satisfactory to the Trustee for such deposit prior to the date of the proposed payment, such money when deposited to be held in trust for the benefit of the Persons entitled to such Defaulted Interest as in this
clause provided. Thereupon, the Trustee shall fix a special record date for the payment of such Defaulted Interest, which shall be not more than 15 days and not less than 10 days prior to the date of the proposed payment and not less than 10 days
after the receipt by the Trustee of the notice of the proposed payment. The Trustee shall promptly notify the Company of such special record date and, in the name and at the expense of the Company, shall cause 

  

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notice of the proposed payment of such Defaulted Interest and the special record date therefor to be mailed, first class postage pre-paid, to each Holder
thereof at its address as it appears in the Debt Security Register, not less than 10 days prior to such special record date. Notice of the proposed payment of such Defaulted Interest and the special record date therefor having been so mailed, such
Defaulted Interest shall be paid to the Persons in whose names the Debt Securities of such series are registered at the close of business on such special record date. 
 (ii) The Company may make payment of any Defaulted Interest on the Debt Securities of such series in any other lawful manner not
inconsistent with the requirements of any securities exchange on which the Debt Securities of such series may be listed, and upon such notice as may be required by such exchange, if, after notice given by the Company to the Trustee of the proposed
payment pursuant to this clause, such manner of payment shall be deemed practicable by the Trustee. 
 Section 2.19 CUSIP Numbers. The
Company in issuing the Debt Securities may use “CUSIP” numbers (in addition to the other identification numbers printed on the Debt Securities), and, if so, the Trustee shall use “CUSIP” numbers in notices of redemption as a
convenience to Holders; provided that any such notice may state that no representation is made as to the accuracy of such numbers either as printed on the Debt Securities or as contained in any notice of a redemption and that reliance may be
placed only on the other identification numbers printed on the Debt Securities, and any such redemption shall not be affected by any defect in or omission of such numbers. The Company will promptly notify the Trustee of any change in the
“CUSIP” numbers. 
 ARTICLE III 
 REDEMPTION OF DEBT SECURITIES 
 Section 3.01 Applicability of Article. The provisions of this Article shall be applicable to
the Debt Securities of any series, which are redeemable before their Stated Maturity except as otherwise specified as contemplated by Section 2.05 for Debt Securities of such series. 
 Section 3.02 Notice of Redemption; Selection of Debt Securities. In case the Company shall desire to exercise the right to redeem all or, as the
case may be, any part of the Debt Securities of any series in accordance with their terms, a Board Resolution or a supplemental Indenture, the Company shall fix a date for redemption and shall give notice of such redemption at least 30 and not more
than 60 days prior to the date fixed for redemption to the Holders of Debt Securities of such series so to be redeemed as a whole or in part, in the manner provided in Section 12.03. The notice if given in the manner herein provided shall be
conclusively presumed to have been duly given, whether or not the Holder receives such notice. In any case, failure to give such notice or any defect in the notice to the Holder of any Debt Security of a series designated for redemption as a whole
or in part shall not affect the validity of the proceedings for the redemption of any other Debt Security of such series. 
 Each such notice
of redemption shall specify: 
  

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 (i) the date fixed for redemption; 
 (ii) the redemption price at which Debt Securities of such series are to be redeemed; 
 (iii) the Place or Places of Payment that payment will be made upon presentation and surrender of such Debt Securities; 
 (iv) that any interest accrued to the date fixed for redemption will be paid as specified in said notice; 
 (v) that the redemption is for a sinking fund payment (if applicable); 
 (vi) that, if the Company defaults in making such redemption payment, the paying agent is prohibited from making such payment pursuant to
the terms of this Indenture; 
 (vii) that on and after said date any interest thereon or on the portions thereof to be
redeemed will cease to accrue; 
 (viii) that in the case of Original Issue Discount Debt Securities original issue discount
accrued after the date fixed for redemption will cease to accrue, the terms of the Debt Securities of that series pursuant to which the Debt Securities of that series are being redeemed; and 
 (ix) that no representation is made as to the correctness or accuracy of the CUSIP number, if any, listed in such notice or printed on the
Debt Securities of that series. 
 If less than all the Debt Securities of a series are to be redeemed the notice of redemption shall specify
the CUSIP numbers of the Debt Securities of that series to be redeemed. In case any Debt Security of a series is to be redeemed in part only, the notice of redemption shall state the portion of the principal amount thereof to be redeemed and shall
state that on and after the date fixed for redemption, upon surrender of such Debt Security, a new Debt Security or Debt Securities of that series in principal amount equal to the unredeemed portion thereof. 
 At least 45 days but not more than 60 days before the redemption date unless the Trustee consents to a shorter period, the Company shall give notice to
the Trustee of the redemption date, the principal amount of Debt Securities to be redeemed and the series and terms of the Debt Securities pursuant to which such redemption will occur. Such notice shall be accompanied by an Officers’
Certificate and an Opinion of Counsel from the Company to the effect that such redemption will comply with the conditions herein. If fewer than all the Debt Securities of a series are to be redeemed, the record date relating to such redemption shall
be selected by the Company and given to the Trustee, which record date shall be not less than 15 days after the date of notice to the Trustee. 
  

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 If less than all the Debt Securities of like tenor and terms of a series are to be redeemed (other than
pursuant to mandatory sinking fund redemptions) the Trustee shall select, on a pro rata basis, by lot or by such other method as in its sole discretion it shall deem appropriate and fair, the Debt Securities of that series or portions thereof (in
multiples of $1,000) to be redeemed. In any case where more than one Debt Security of such series is registered in the same name, the Trustee in its discretion may treat the aggregate principal amount so registered as if it were represented by one
Debt Security of such series. The Trustee shall promptly notify the Company in writing of the Debt Securities selected for redemption and, in the case of any Debt Securities selected for partial redemption, the principal amount thereof to be
redeemed. If any Debt Security called for redemption shall not be so paid upon surrender thereof on such redemption date, the principal, premium, if any, and interest shall bear interest until paid from the redemption date at the rate borne by the
Debt Securities of that series. If less than all the Debt Securities of unlike tenor and terms of a series are to be redeemed, the particular Debt Securities to be redeemed shall be selected by the Company. Provisions of this Indenture that apply to
Debt Securities called for redemption also apply to portions of Debt Securities called for redemption. 
 Section 3.03 Deposit of
Redemption Price. On or prior to 10:00 a.m., New York City time, on any redemption date for any Debt Securities, the Company shall deposit with the Trustee or with a paying agent (or, if the Company is acting as its own paying agent, segregate
and hold in trust) an amount of money sufficient to pay the redemption price of such Debt Securities or any portions thereof that are to be redeemed on that date. 
 Section 3.04 Payment of Debt Securities Called for Redemption. If notice of redemption has been given as provided in Section 3.02, the Debt Securities or portions of Debt Securities of the series with
respect to which such notice has been given shall become due and payable on the date and at the Place or Places of Payment stated in such notice at the applicable redemption price, together with any interest accrued to the date fixed for redemption,
and on and after said date (unless the Company shall default in the payment of such Debt Securities at the applicable redemption price, together with any interest accrued to said date) any interest on the Debt Securities or portions of Debt
Securities of any series so called for redemption shall cease to accrue, any original issue discount in the case of Original Issue Discount Debt Securities shall cease to accrue, except to the extent described below, shall be void. On presentation
and surrender of such Debt Securities at the Place or Places of Payment in said notice specified, the said Debt Securities or the specified portions thereof shall be paid and redeemed by the Company at the applicable redemption price, together with
any interest accrued thereon to the date fixed for redemption. 
 Any Debt Security that is to be redeemed only in part shall be surrendered
at the corporate trust office or such other office or agency of the Company as is specified pursuant to Section 2.05 with, if the Company, the Registrar or the Trustee so requires, due endorsement by, or a written instrument of transfer in form
satisfactory to the Company, the Registrar and the Trustee duly executed by, the Holder thereof or his attorney duly authorized in writing, and the Company shall execute, and the Trustee shall authenticate and deliver to the Holder of such Debt
Security without service charge, a new Debt Security or Debt Securities of the same series, of like tenor and form, of any authorized denomination as requested by such Holder in aggregate principal amount equal to and in exchange for the unredeemed
portion of the principal of the Debt Security so surrendered; except that if a Global Security is so surrendered, the Company shall execute, and the Trustee shall authenticate and deliver to the Depositary for such Global Security, without service
charge, a new Global Security in a denomination equal to and in exchange for the unredeemed portion of the principal of the Global Security so surrendered. In the case of a Debt Security providing appropriate space for such notation, at the option
of the Holder thereof, the Trustee, in lieu of delivering a new Debt Security or Debt Securities as aforesaid, may make a notation on such Debt Security of the payment of the redeemed portion thereof. 
  

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 Section 3.05 Mandatory and Optional Sinking Funds. The minimum amount of any sinking fund payment
provided for by the terms of Debt Securities of any series, the Board Resolution or a supplemental Indenture is herein referred to as a “mandatory sinking fund payment”, and any payment in excess of such minimum amount provided for by the
terms of Debt Securities of any series, the Board Resolution or a supplemental Indenture is herein referred to as an “optional sinking fund payment”. 
 In lieu of making all or any part of any mandatory sinking fund payment with respect to any Debt Securities of a series in cash, the Company may at its option (a) deliver to the Trustee Debt Securities of that
series theretofore purchased or otherwise acquired by the Company or (b) receive credit for the principal amount of Debt Securities of that series which have been redeemed either at the election of the Company pursuant to the terms of such Debt
Securities or through the application of permitted optional sinking fund payments pursuant to the terms of such Debt Securities, resolution or supplemental Indenture; provided, that such Debt Securities have not been previously so credited.
Such Debt Securities shall be received and credited for such purpose by the Trustee at the redemption price specified in such Debt Securities, resolution or supplemental Indenture for redemption through operation of the sinking fund and the amount
of such mandatory sinking fund payment shall be reduced accordingly. 
 Section 3.06 Redemption of Debt Securities for Sinking Fund.
Not less than 45 days prior to each sinking fund payment date for any series of Debt Securities, the Company will deliver to the Trustee an Officers’ Certificate specifying the amount of the next ensuing sinking fund payment for that series
pursuant to the terms of that series, any resolution or supplemental Indenture, and the portion thereof, if any, which is to be satisfied by delivering and crediting Debt Securities of that series pursuant to this Section 3.06 (which Debt
Securities, if not previously redeemed, will accompany such certificate) and whether the Company intends to exercise its right to make any permitted optional sinking fund payment with respect to such series. Such certificate shall also state that no
Event of Default has occurred and is continuing with respect to such series. Such certificate shall be irrevocable and upon its delivery the Company shall be obligated to make the cash payment or payments therein referred to, if any, on or before
the next succeeding sinking fund payment date. Failure of the Company to deliver such certificate (or to deliver the Debt Securities specified in this paragraph) shall not constitute a Default, but such failure shall require that the sinking fund
payment due on the next succeeding sinking fund payment date for that series shall be paid entirely in cash and shall be sufficient to redeem the principal amount of such Debt Securities subject to a mandatory sinking fund payment without the option
to deliver or credit Debt Securities as provided in this Section 3.06 and without the right to make any optional sinking fund payment, if any, with respect to such series. 
 Any sinking fund payment or payments (mandatory or optional) made in cash plus any unused balance of any preceding sinking fund payments made in cash
which shall equal or exceed $100,000 (or a lesser sum if the Company shall so request) with respect to the Debt Securities of any particular series shall be applied by the Trustee on the sinking fund payment 

  

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date on which such payment is made (or, if such payment is made before a sinking fund payment date, on the sinking fund payment date following the date of
such payment) to the redemption of such Debt Securities at the Redemption Price specified in such Debt Securities, resolution or supplemental Indenture for operation of the sinking fund together with any accrued interest to the date fixed for
redemption. Any sinking fund monies not so applied or allocated by the Trustee to the redemption of Debt Securities shall be added to the next cash sinking fund payment received by the Trustee for such series and, together with such payment, shall
be applied in accordance with the provisions of this Section 3.06. Any and all sinking fund monies with respect to the Debt Securities of any particular series held by the Trustee on the last sinking fund payment date with respect to Debt
Securities of such series and not held for the payment or redemption of particular Debt Securities shall be applied by the Trustee, together with other monies, if necessary, to be deposited sufficient for the purpose, to the payment of the principal
of the Debt Securities of that series at its Stated Maturity. 
 The Trustee shall select the Debt Securities to be redeemed upon such
sinking fund payment date in the manner specified in the last paragraph of Section 3.02 and the Company shall cause notice of the redemption thereof to be given in the manner provided in Section 3.02 except that the notice of
redemption shall also state that the Debt Securities are being redeemed by operation of the sinking fund. Such notice having been duly given, the redemption of such Debt Securities shall be made upon the terms and in the manner stated in
Section 3.04. 
 At least one business day before each sinking fund payment date, the Company shall pay to the Trustee (or, if the
Company is acting as its own paying agent, the Company shall segregate and hold in trust) in cash a sum equal to any interest accrued to the date fixed for redemption of Debt Securities or portions thereof to be redeemed on such sinking fund payment
date pursuant to this Section 3.06. 
 The Trustee shall not redeem any Debt Securities of a series with sinking fund monies or mail any
notice of redemption of such Debt Securities by operation of the sinking fund for such series during the continuance of a Default in payment of interest on such Debt Securities or of any Event of Default (other than an Event of Default occurring as
a consequence of this paragraph) with respect to such Debt Securities, except that if the notice of redemption of any such Debt Securities shall theretofore have been mailed in accordance with the provisions hereof, the Trustee shall redeem such
Debt Securities if cash sufficient for that purpose shall be deposited with the Trustee for that purpose in accordance with the terms of this Article III. Except as aforesaid, any monies in the sinking fund for such series at the time when any such
Default or Event of Default shall occur and any monies thereafter paid into such sinking fund shall, during the continuance of such Default or Event of Default, be held as security for the payment of such Debt Securities; provided, however,
that in case such Event of Default or Default shall have been cured or waived as provided herein, such monies shall thereafter be applied on the next sinking fund payment date for such Debt Securities on which such monies may be applied
pursuant to the provisions of this Section 3.06. 
  

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 ARTICLE IV 
 PARTICULAR COVENANTS OF THE COMPANY 
 Section 4.01 Payment of Principal of, and Premium, if any, and
Interest on, Debt Securities. 
 (a) The Company, for the benefit of each series of Debt Securities, will duly and
punctually pay or cause to be paid the principal of, and premium, if any, and interest on, each of the Debt Securities at the place, at the respective times and in the manner provided herein, in the Debt Securities. Each installment of
interest on the Debt Securities may at the Company’s option be paid by mailing checks for such interest payable to the Person entitled thereto pursuant to Section 2.09(a) to the address of such Person as it appears on the Debt Security
Register. 
 Principal, premium and interest of Debt Securities of any series shall be considered paid on the date due if on
such date the Trustee or any paying agent holds in accordance with this Indenture money sufficient to pay all principal, premium and interest then due. 
 The Company shall pay interest on overdue principal at the rate specified therefor in the Debt Securities and it shall pay interest on overdue installments of interest at the same rate to the extent lawful.

 (b) (Notwithstanding the provisions of Section 4.01(a) or any other provision herein to the contrary, the Company
shall have the right, as provided in an Officer’s Certificate or supplemental indenture issued pursuant to Article IX, in its sole and absolute discretion at any time and from time to time while the Debt Securities of any series are
outstanding, so long as no Event of Default with respect to such series of Debt Securities has occurred and is continuing, to defer payments of Interest by extending the Interest payment period for such series of Debt Securities for the maximum
consecutive period, if any, specified for such series of Debt Securities, provided that such extension period must end on an Interest payment date and shall not extend beyond the Stated Maturity or Redemption Date of any Debt Security of such
series, and provided further that at the end of each extension period the Company shall pay all Interest then accrued and unpaid (together with Interest thereon to the extent permitted by applicable law at the rate accruing on such Debt
Securities). Prior to the termination of an extension period, the Company may shorten or may further extend the Interest payment period for such series of Debt Securities, provided that such extension period together with all such previous
and further extensions may not exceed the maximum consecutive period specified for such series of Debt Securities, end on a date other than an Interest payment date or extend beyond the Stated Maturity or Redemption Date of any Debt Security of such
series. The Company shall give the Trustee notice of the Company’s election to begin an extension period for any series of Debt Securities and any shortening or extension thereof at least five Business Days prior to: (i) the date notice of
payment of Interest on such Debt Securities is required to be given to any national securities exchange on which the Debt Securities are then listed or other applicable self-regulatory organization, or (ii) the date of the notice of the record
or payment date of the related distribution on the Debt Securities, but in any event not less than five Business Days prior to the record date fixed by the Company for the payment of such Interest. The Company shall give or cause the Trustee to give
notice (a form of which shall be provided by the Company to the Trustee) of the Company’s election to begin an extension period to the Holders by first class mail, postage prepaid. 
  

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 Section 4.02 Maintenance of Offices or Agencies for Registration of Transfer, Exchange and Payment of
Debt Securities. The Company will maintain in each Place of Payment for any series of Debt Securities, an office or agency where Debt Securities of such series may be presented or surrendered for payment, where Debt Securities of such series may
be surrendered for transfer or exchange and where notices and demands to or upon the Company in respect of the Debt Securities of such series and this Indenture may be served. The Company will give prompt written notice to the Trustee 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 Trustee with the address thereof, such presentations, surrenders,
notices and demands may be made or served at the corporate trust office of the Trustee, and the Company hereby appoints the Trustee as its agent to receive all presentations, surrenders, notices and demands. 
 The Company may also from time to time designate different or additional offices or agencies to be maintained for such purposes (in or outside of such
Place of Payment), and may from time to time rescind any such designation; provided, however, that no such designation or rescission shall in any manner relieve the Company of its obligations described in the preceding paragraph. The Company
will give prompt written notice to the Trustee of any such additional designation or rescission of designation and any change in the location of any such different or additional office or agency. 
 Section 4.03 Appointment To Fill a Vacancy in the Office of Trustee. The Company, whenever necessary to avoid or fill a vacancy in the office of
Trustee, will appoint, in the manner provided in Section 7.08, a Trustee, so that there shall at all times be a Trustee hereunder with respect to each series of Debt Securities. 
 Section 4.04 Duties of Paying Agents, Etc. The Company shall cause each paying agent, if any, other than the Trustee, to execute and deliver to
the Trustee an instrument in which such agent shall agree with the Trustee, subject to the provisions of this Section 4.04, 
 (i) that it will hold all sums held by it as such agent for the payment of the principal of, and premium, if any, or interest on, the Debt Securities of any series (whether such sums have been paid to it by the Company or by any other
obligor on the Debt Securities or Coupons of such series) in trust for the benefit of the Holders of the Debt Securities of such series; 
 (ii) that it will give the Trustee notice of any failure by the Company (or by any other obligor on the Debt Securities of such series) to make any payment of the principal of, and premium, if any, or interest on, the
Debt Securities of such series when the same shall be due and payable; and 
 (iii) that it will at any time during the
continuance of an Event of Default, upon the written request of the Trustee, forthwith pay to the Trustee all sums so held by it as such agent. 
  

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 (b) If the Company shall act as its own paying agent, with respect to any series of Debt
Securities, it will, on or before each due date of the principal of, and premium, if any, or interest on, the Debt Securities, of any series, set aside, segregate and hold in trust for the benefit of the Holders of the Debt Securities of such series
a sum sufficient to pay such principal, premium, if any, or interest so becoming due. The Company will promptly notify the Trustee of any failure by the Company to take such action or the failure by any other obligor on such Debt Securities to make
any payment of the principal of, and premium, if any, or interest on, such Debt Securities when the same shall be due and payable. 
 (c) Anything in this Section 4.04 to the contrary notwithstanding, the Company may, at any time, for the purpose of obtaining a satisfaction and discharge of this Indenture, or for any other reason, pay or by Company Order direct any
paying agent to pay, to the Trustee all sums held in trust by the Company, or any paying agent, as required by this Section 4.04, such sums to be held by the Trustee upon the same trusts as those upon which such sums were held by the Company or
such paying agent, and upon such payment by any paying agent to the Trustee, such paying agent shall be released from all further liability with respect to such money. 
 (d) Whenever the Company shall have one or more paying agents with respect to any series of Debt Securities, it will, prior to each due
date of the principal of, and premium, if any, or interest on, any Debt Securities of such series, deposit with any such paying agent a sum sufficient to pay the principal, premium or interest so becoming due, such sum to be held in trust for the
benefit of the Persons entitled thereto, and (unless any such paying agent is the Trustee) the Company will promptly notify the Trustee of its action or failure so to act. 
 (e) Anything in this Section 4.04 to the contrary notwithstanding, the agreement to hold sums in trust as provided in this
Section 4.04 is subject to the provisions of Section 11.05. 
 Section 4.05 SEC Reports; Financial Statements. 

(a) The Company shall, so long as any of the Debt Securities are outstanding, file with the Trustee, within 15 days after it files the
same with the SEC, copies of the annual reports and the information, documents and other reports (or copies of such portions of any of the foregoing as the SEC may by rules and regulations prescribe) that the Company is required to file with the SEC
pursuant to Section 13 or 15(d) of the Exchange Act. If the Company is not subject to the requirements of such Section 13 or 15(d), the Company shall file with the Trustee, within 15 days after it would have been required to file the same
with the SEC, financial statements, including any notes thereto (and with respect to annual reports, an auditors’ report by a firm of established national reputation), and a “Management’s Discussion and Analysis of Financial Condition
and Results of Operations,” both comparable to that which the Company would have been required to include in such annual reports, information, documents or other reports if the Company had been subject to the requirements of such
Section 13 or 15(d). The Company shall also comply with the provisions of TIA Section 314(a). 
 (b) The Company
shall provide the Trustee with a sufficient number of copies of all reports and other documents and information that the Trustee may be required to deliver to Holders under this Section. 
  

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 Section 4.06 Compliance Certificate. 
 (a) The Company shall, so long as any of the Debt Securities are Outstanding, deliver to the Trustee, within 120 days after the end of
each fiscal year, an Officers’ Certificate stating that a review of the activities of the Company during the preceding fiscal year has been made under the supervision of the signing Officers of the Company with a view to determining whether the
Company has kept, observed, performed and fulfilled its obligations under this Indenture, and further stating, as to each such Officer signing such certificate, that to the best of his or her knowledge the Company has kept, observed, performed and
fulfilled each and every covenant contained in this Indenture and is not in default in the performance or observance of any of the terms, provisions and conditions hereof, without regard to any grace period or requirement of notice required by this
Indenture (or, if a Default or Event of Default shall have occurred, describing all such Defaults or Events of Default of which such Officer may have knowledge and what action the Company, is taking or proposes to take with respect thereto) and that
to the best of his or her knowledge no event has occurred and remains in existence by reason of which payments on account of the principal of, or premium, if any, or interest, if any, on the Debt Securities are prohibited or, if such event has
occurred, a description of the event and what action the Company is taking or proposes to take with respect thereto. 
 (b) So
long as not contrary to the then current recommendations of the American Institute of Certified Public Accountants, the year-end financial statements delivered pursuant to Section 4.05 shall be accompanied by a written statement of the
Company’s independent public accountants that in making the examination necessary for certification of such financial statements nothing has come to their attention that would lead them to believe that the Company has violated any provisions of
Articles 4 or 5 of this Indenture (to the extent such provisions relate to accounting matters) or, if any such violation has occurred, specifying the nature and period of existence thereof, it being understood that such accountants shall not be
liable directly or indirectly to any Person for any failure to obtain knowledge of any such violation. 
 (c) The Company
shall, so long as any of the Debt Securities are outstanding, deliver to the Trustee, forthwith upon any Officer of the Company’s becoming aware of any Default or Event of Default under this Indenture, an Officers’ Certificate specifying
such Default or Event of Default and what action the Company is taking or proposes to take with respect thereto. 
 Section 4.07 Further
Instruments and Acts. The Company will, upon request of the Trustee, execute and deliver such further instruments and do such further acts as may reasonably be necessary or proper to carry out more effectually the purposes of this Indenture.

 Section 4.08 Corporate Existence. The Company shall do or cause to be done all things necessary to preserve and keep in full force
and effect its corporate existence and the corporate, partnership and other existence of each of its Subsidiaries and all rights (charter and statutory) and franchises of the Company and its Subsidiaries, provided that the Company shall not
be required to preserve the corporate existence of any Subsidiary of the Company or any such right or franchise if the Board of Directors shall determine that the preservation thereof is no longer desirable in the conduct of the business of the
Company and the Restricted Subsidiaries and that the loss thereof would not have a material adverse effect on the business, prospects, assets or financial condition of the Company and its Subsidiaries taken as a whole and would not have any material
adverse effect on the payment and performance of the obligations of the Company under the Debt Securities and this Indenture. 
  

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 Section 4.09 Maintenance of Properties. The Company shall cause all properties owned by the
Company or any of its Subsidiaries or used or held for use in the conduct of its business or the business of any such Subsidiary to be maintained and kept in good condition, repair and working order (reasonable wear and tear excepted) and supplied
with all necessary equipment and will cause to be made all necessary repairs, renewals, replacements, betterments and improvements thereof, all as in the judgment of the Company may be necessary so that the business carried on in connection
therewith may be properly and advantageously conducted at all times; provided that nothing in this Section shall prevent the Company from discontinuing the operation or maintenance of any of such properties if such discontinuance is, in the
judgment of the Company, desirable in the conduct of its business or the business of any such Subsidiary and not disadvantageous in any material respect to the Holders. 
 Section 4.10 Payment of Taxes and Other Claims. The Company will pay or discharge or cause to be paid or discharged, before the same shall become delinquent, (i) all taxes, assessments and governmental
charges levied or imposed upon the Company or any of its Subsidiaries or upon the income, profits or property of the Company or any of its Subsidiaries, and (ii) all lawful claims for labor, materials and supplies which, if unpaid, might by law
become a Lien upon the property of the Company or any of its Subsidiaries; provided that the Company shall not be required to pay or discharge or cause to be paid or discharged any such tax, assessment, charge or claim whose amount,
applicability or validity is being contested in good faith by appropriate proceedings. 
 Section 4.11 Limitation on Sale/Leaseback
Transactions. None of the Company or any other Restricted Subsidiary, so long as any of the Debt Securities are Outstanding, will enter into any Sale/Leaseback Transaction with any Person (other than the Company or a Restricted Subsidiary)
unless: 
 (a) the Company or such Restricted Subsidiary would be entitled to incur Indebtedness, in a principal amount equal
to the Attributable Indebtedness with respect to such Sale/Leaseback Transaction, secured by a Lien on the property subject to such Sale/Leaseback Transaction pursuant to Section 4.12 without equally and ratably securing the Debt Securities
pursuant to such Section; or 
 (b) within a period commencing six months prior to the consummation of such Sale/Leaseback
Transaction and ending six months after the consummation thereof, the Company or such Restricted Subsidiary shall have expended for property used or to be used in the ordinary course of business of the Company and the Restricted Subsidiaries
(including amounts expended for the exploration, drilling or development thereof, and for additions, alterations, repairs and improvements thereto) an amount equal to all or a portion of the Net Proceeds of such Sale/Leaseback Transaction and the
Company shall have elected to designate such amount as a credit against such Sale/Leaseback Transaction (with any such amount not being so designated to be applied as set forth in clause (c) below); or 
  

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 (c) the Company, during the 12-month period after the effective date of such
Sale/Leaseback Transaction, shall have applied to the voluntary defeasance or retirement of Debt Securities or any Pari Passu Indebtedness an amount equal to the greater of the Net Proceeds of the sale or transfer of the property leased in such
Sale/Leaseback Transaction and the fair value, as determined by the Board of Directors of the Company of such property at the time of entering into such Sale/Leaseback Transaction (in either case adjusted to reflect the remaining term of the lease
and any amount expended by the Company as set forth in clause (b) above), less an amount equal to the principal amount of Debt Securities and Pari Passu Indebtedness voluntarily defeased or retired by the Company within such 12-month period and
not designated as a credit against any other Sale/Leaseback Transaction entered into by the Company or any Restricted Subsidiary during such period. 
 Section 4.12 Limitation on Liens. No provision of this Indenture or the Debt Securities shall in any way restrict or prevent the Company or any Restricted Subsidiary from issuing, assuming, guaranteeing or
otherwise incurring any indebtedness; provided, however, that neither the Company nor any other Restricted Subsidiary shall issue, assume or guarantee any Indebtedness for borrowed money secured by any Lien on any property or asset now owned
or hereafter acquired by the Company or such Restricted Subsidiary without making effective provision whereby any and all Debt Securities then or thereafter outstanding will be secured by a Lien equally and ratably with any and all other obligations
thereby secured for so long as any such obligations shall be so secured. Notwithstanding the foregoing, the Company or any Restricted Subsidiary may, without so securing the Debt Securities, issue, assume or guarantee Indebtedness secured by the
following Liens: 
 (a) Liens existing on the date of this Indenture or provided for under the terms of agreements
existing on such date (including, without limitation, the Lien provided for pursuant to Section 7.06); 
 (b)
Liens on property securing (i) all or any portion of the cost of exploration, production, gathering, processing, marketing, drilling or development of such property, (ii) all or any portion of the cost of acquiring, constructing, altering,
improving or repairing any property or assets, real or personal, or improvements used or to be used in connection with such property or (iii) Indebtedness incurred by the Company or any Restricted Subsidiary to provide funds for the activities
set forth in clauses (i) and (ii) above; 
 (c) Liens securing Indebtedness owed by a Restricted Subsidiary to the
Company or to any other Restricted Subsidiary; 
 (d) Liens on property existing at the time of acquisition of such property
by the Company or a Subsidiary or Liens on the property of any Person existing at the time such Person becomes a Restricted Subsidiary of the Company or is merged with the Company in compliance with Article X hereof and in either case not incurred
as a result of (or in connection with or in anticipation of) the acquisition of such property or such Person becoming a Restricted Subsidiary of the Company or being merged with the Company, provided that such Liens do not extend to or cover
any property or assets of the Company or any of its Restricted Subsidiaries other than the property so acquired; 
  

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 (e) Liens on any property securing (i) Indebtedness incurred in connection with the
construction, installation or financing of pollution control or abatement facilities or other forms of industrial revenue bond financing, (ii) Indebtedness issued or guaranteed by the United States or any State thereof or any department, agency
or instrumentality of either or (iii) Indebtedness issued or guaranteed by (Y) a foreign government, any state or any department, agency or instrumentality of either or (Z) an international finance agency or any division or department
thereof, including the World Bank, the International Finance Corp. and the Multilateral Investment Guarantee Agency; 
 (f)
any Lien extending, renewing or replacing (or successive extensions, renewals or replacements of) any Lien of any type permitted under clauses (a) through (e) above, provided that such Lien extends to or covers only the property
that is subject to the Lien being extended, renewed or replaced; 
 (g) any Ordinary Course Lien arising, but only so long as
continuing, in the ordinary course of business of the Company and the Restricted Subsidiaries; 
 (h) any Lien resulting from
the deposit of monies or evidences of Indebtedness in trust for the purpose of defeasing Indebtedness of the Company or any Subsidiary; or 
 (i) Liens (exclusive of any Lien of any type otherwise permitted under clauses (a) through (h) above) securing Indebtedness of the Company or any Restricted Subsidiary in an aggregate principal amount which,
together with the aggregate amount of Attributable Indebtedness deemed to be outstanding in respect of all Sale/Leaseback Transactions entered into pursuant to clause (a) of Section 4.11 (exclusive of any such Sale/Leaseback Transactions
otherwise permitted under clauses (a) through (h) above), does not at the time such Indebtedness is incurred exceed 10% of the Consolidated Net Tangible Assets of the Company and its Restricted Subsidiaries (as derived from the most recent
audited consolidated balance sheet of the Company and its Subsidiaries). 
 (j) Notwithstanding the foregoing, nothing in this
Section 4.12 shall be deemed to prohibit or otherwise limit the following types of transactions: 
 (1) the sale,
granting of Liens with respect to, or other transfer of, crude oil, natural gas or other petroleum hydrocarbons in place for a period of time until, or in an amount such that, the transferee will realize therefrom a specified amount (however
determined) of money or of such crude oil, natural gas or other petroleum hydrocarbons; 
 (2) the sale or other transfer of
any other interest in property of the character commonly referred to as a production payment, overriding royalty, forward sale or similar interest; 
  

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 (3) the entering into of Hedging Obligations although Liens securing any Indebtedness for
borrowed money that is the subject of any Hedging Obligations shall not be permitted hereby unless permitted under clauses (a) through (i) above; or 
 (4) the granting of Liens required by any contract or statute in order to permit the Company or any Restricted Subsidiary to perform any
contract or subcontract made by it with or at the request of the United States or any State thereof or any department, agency or instrumentality of either, or to secure partial, progress, advance or other payments to the Company or any Restricted
Subsidiary by such governmental unit pursuant to the provisions of any contract or statute. 
 ARTICLE V 
 HOLDERS’ LISTS AND REPORTS BY THE TRUSTEE 
 Section 5.01 Company To Furnish Trustee Information as to Names and Addresses of Holders; Preservation of Information. The Company covenants and agrees that it will furnish or cause to be furnished to the Trustee with respect to the
Debt Securities of each series: 
 (a) not more than 15 days after each record date with respect to the payment of interest,
if any, a list, in such form as the Trustee may reasonably require, of the names and addresses of the Holders as of such record date, and 
 (b) at such other times as the Trustee may request in writing, within 30 days after the receipt by the Company of any such request, a list of similar form and contents as of a date not more than 15 days prior to the
time such list is furnished; provided, however, that so long as the Trustee shall be the Registrar, such lists shall not be required to be furnished. 
 The Trustee shall preserve, in as current a form as is reasonably practicable, all information as to the names and addresses of the Holders (i) contained in the most recent list furnished to it as provided in this
Section 5.01 or (ii) received by it in the capacity of paying agent or Registrar (if so acting) hereunder. 
 The Trustee may
destroy any list furnished to it as provided in this Section 5.01 upon receipt of a new list so furnished. 
 Section 5.02
Communications to Holders. Holders may communicate pursuant to Section 312(b) of the TIA with other Holders with respect to their rights under this Indenture or the Debt Securities. The Company, the Trustee, the Registrar and anyone else
shall have the protection of Section 312(c) of the TIA. 
 Section 5.03 Reports by Trustee. Within 60 days after each
January 31, beginning with the first January 31 following the first issuance of Debt Securities pursuant to Section 2.05, and in any event on or before April 1 in each year, the Trustee shall mail to Holders a brief report dated
as of such January 31 that complies with TIA Section 313(a); provided, however, that if no event described in TIA Section 313(a) has occurred within the twelve months preceding the reporting date, no report need be transmitted.
The Trustee also shall comply with TIA Section 313(b). 
  

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 Reports pursuant to this Section 5.03 shall be transmitted by mail: 
 (a) to all Holders, as the names and addresses of such Holders appear in the Debt Security Register; 
 (b) except in the cases of reports under Section 313(b)(2) of the TIA, to each Holder of a Debt Security of any series whose name and
address appear in the information preserved at the time by the Trustee in accordance with Section 5.01. 
 A copy of each report at the
time of its mailing to Holders shall be filed with the Securities and Exchange Commission and each stock exchange (if any) on which the Debt Securities of any series are listed. The Company agrees to notify promptly the Trustee whenever the Debt
Securities of any series become listed on any stock exchange and of any delisting thereof. 
 Section 5.04 Record Dates for Action by
Holders. If the Company shall solicit from the holders of Debt Securities of any series any action (including the making of any demand or request, the giving of any direction, notice, consent or waiver or the taking of any other action), the
Company may, at its option, by resolution of the Board of Directors, fix in advance a record date for the determination of Holders of Debt Securities entitled to take such action, but the Company shall have no obligation to do so. Any such record
date shall be fixed at the Company’s discretion. If such a record date is fixed, such action may be sought or given before or after the record date, but only the Holders of Debt Securities of record at the close of business on such record date
shall be deemed to be Holders of Debt Securities for the purpose of determining whether Holders of the requisite proportion of Debt Securities of such series Outstanding have authorized or agreed or consented to such action, and for that purpose the
Debt Securities of such series Outstanding shall be computed as of such record date. 
 ARTICLE VI 
 REMEDIES OF THE TRUSTEE AND HOLDERS IN EVENT OF DEFAULT 
 Section 6.01 Events of Default. If any one or more of the following shall have occurred and be continuing with respect to Debt Securities of any series (each of the following, an “Event of
Default”): 
 (a) default in the payment of any installment of interest upon any Debt Securities of that series, as
and when the same shall become due and payable, and continuance of such default for a period of 30 days; or 
 (b) default in
the payment of the principal of or premium, if any, on any Debt Securities of that series as and when the same shall become due and payable, whether at maturity, upon redemption, by declaration, upon required repurchase or otherwise; or 

 

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 (c) if applicable, failure by the Company to deliver the required securities or other
rights upon an appropriate conversion or exchange election by Holders of the Debt Securities; or 
 (d) default in the payment
of any sinking fund payment with respect to any Debt Securities of that series as and when the same shall become due and payable; or 
 (e) failure on the part of the Company duly to observe or perform any other of the covenants or agreements on the part of the Company in the Debt Securities of that series, in any Board Resolution authorizing the issuance of that series of
Debt Securities, in this Indenture with respect to such series or in any supplemental Indenture with respect to such series (other than a covenant a default in the performance of which is elsewhere in this Section specifically dealt with),
continuing for a period of 60 days after the date on which written notice specifying such failure and requiring the Company to remedy the same shall have been given, by registered or certified mail, to the Company by the Trustee or to the Company
and the Trustee by the Holders of at least 25% in aggregate principal amount of the Debt Securities of that series at the time Outstanding; or 
 (f) any default shall occur which results in the acceleration of the maturity of any Indebtedness of the Company or any Restricted Subsidiary (other than the series of Debt Securities) having an outstanding principal
amount of $5 million or more individually or, taken together with all other such Indebtedness that has been so accelerated, in the aggregate; or any default shall occur in the payment of any principal or interest in respect of any Indebtedness of
the Company or any Restricted Subsidiary (other than the series of Debt Securities) having an outstanding principal amount of $5 million or more individually or, taken together with all other such Indebtedness with respect to which any such payment
has not been made in the aggregate and such default shall be continuing for a period of 30 days without the Company or such Restricted Subsidiary, as the case may be, effecting a cure of such default; 
 (g) failure by the Company or any Restricted Subsidiary to pay final, non-appealable judgments aggregating in excess of $20 million, which
judgments are not paid, discharged or stayed for a period of 60 days after the judgment becomes final and non-appealable; 
 (h) the Company or any Restricted Subsidiary pursuant to or within the meaning of any Bankruptcy Law: 
 (i)
commences a voluntary case, 
 (ii) consents to the entry of an order for relief against it in an involuntary case,

 (iii) consents to the appointment of a Custodian of it or for all or substantially all of its property; or 
 (iv) makes a general assignment for the benefit of its creditors; 
  

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 (i) a court of competent jurisdiction enters an order or decree under any Bankruptcy Law
that: 
 (i) is for relief against the Company or any Restricted Subsidiary as debtor in an involuntary case and such decree
or order shall remain unstayed and in effect for a period of 60 consecutive days, 
 (ii) appoints a Custodian of the Company
or any Restricted Subsidiary or a Custodian for all or substantially all of the property of the Company or any Restricted Subsidiary, or 
 (iii) orders the liquidation of the Company or any Restricted Subsidiary, and the order or decree shall remain unstayed and in effect for a period of 60 consecutive days; or 
 (j) any other Event of Default provided with respect to Debt Securities of that series; 
 then and in each and every case that an Event of Default described in clause (a), (b), (c), (d), (e), (f), (g), or (j) with respect to Debt Securities of that
series at the time Outstanding occurs and is continuing, unless the principal of and interest on all the Debt Securities of that series shall have already become due and payable, either the Trustee or the Holders of not less than 25% in aggregate
principal amount of the Debt Securities of that series then Outstanding hereunder, by notice in writing to the Company (and to the Trustee if given by Holders), may declare the principal of (or, if the Debt Securities of that series are Original
Issue Discount Debt Securities, such portion of the principal amount as may be specified in the terms of that series) and interest on all the Debt Securities of that series to be due and payable immediately, and upon any such declaration the same
shall become and shall be immediately due and payable, anything in this Indenture or in the Debt Securities of that series contained to the contrary notwithstanding. If an Event of Default described in clause (h) or (i) occurs, then and in
each and every such case, unless the principal of and interest on all the Debt Securities shall have become due and payable, the principal of (or, if any Debt Securities are Original Issue Discount Debt Securities, such portion of the principal
amount as may be specified in the terms thereto) and interest on all the Debt Securities then Outstanding hereunder shall ipso facto become and be immediately due and payable without any declaration or other act on the part of the Trustee or
any Holders, anything in this Indenture or in the Debt Securities contained to the contrary notwithstanding. 
 The Holders of a majority in
aggregate principal amount of the Debt Securities of a particular series by notice to the Trustee may rescind an acceleration and its consequences if the rescission would not conflict with any judgment or decree already rendered and if all existing
Events of Default have been cured or waived except nonpayment of principal or interest that has become due solely because of acceleration. Upon any such rescission, the parties hereto shall be restored respectively to their several positions and
rights hereunder, and all rights, remedies and powers of the parties hereto shall continue as though no such proceeding had been taken. 
  

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 Section 6.02 Collection of Indebtedness by Trustee, Etc. If an Event of Default occurs and is
continuing, the Trustee, in its own name and as trustee of an express trust, shall be entitled and empowered to institute any action or proceedings at law or in equity for the collection of the sums so due and unpaid or enforce the performance of
any provision of the Debt Securities of the affected series or this Indenture, and may prosecute any such action or proceedings to judgment or final decree, and may enforce any such judgment or final decree against the Company or any other obligor
upon the Debt Securities of such series (and collect in the manner provided by law out of the property of the Company or any other obligor upon the Debt Securities of such series wherever situated the monies adjudged or decreed to be
payable). 
 In case there shall be pending proceedings for the bankruptcy or for the reorganization of the Company or any other obligor upon
the Debt Securities of any series under Title 11 of the United States Code or any other Federal or State bankruptcy, insolvency or similar law, or in case a receiver, trustee or other similar official shall have been appointed for its property, or
in case of any other similar judicial proceedings relative to the Company or any other obligor upon the Debt Securities of any series, its creditors or its property, the Trustee, irrespective of whether the principal of Debt Securities of any series
shall then be due and payable as therein expressed or by declaration or otherwise and irrespective of whether the Trustee shall have made any demand pursuant to the provisions of this Section 6.02, shall be entitled and empowered, by
intervention in such proceedings or otherwise, to file and prove a claim or claims for the whole amount of principal, premium, if any, and interest (or, if the Debt Securities of such series are Original Issue Discount Debt Securities, such portion
of the principal amount as may be specified in the terms of such series) owing and unpaid in respect of the Debt Securities of such series, and to file such other papers or documents as may be necessary or advisable in order to have the claims of
the Trustee (including any claim for reasonable compensation to the Trustee, its agents, attorneys and counsel, and for reimbursement of all expenses and liabilities Incurred, and all advances made, by the Trustee except as a result of its
negligence or bad faith) and of the Holders thereof allowed in any such judicial proceedings relative to the Company, or any other obligor upon the Debt Securities of such series, its creditors or its property, and to collect and receive any monies
or other property payable or deliverable on any such claims, and to distribute all amounts received with respect to the claims of such Holders and of the Trustee on their behalf, and any receiver, assignee or trustee in bankruptcy or reorganization
is hereby authorized by each of such Holders to make payments to the Trustee, and, in the event that the Trustee shall consent to the making of payments directly to such Holders, to pay to the Trustee such amount as shall be sufficient to cover
reasonable compensation to the Trustee, its agents, attorneys and counsel, and all other reasonable expenses and liabilities Incurred, and all advances made, by the Trustee except as a result of its negligence or bad faith. 
 All rights of action and of asserting claims under this Indenture, or under any of the Debt Securities, of any series, may be enforced by the Trustee
without the possession of any such Debt Securities, or the production thereof in any trial or other proceedings relative thereto, and any such action or proceedings instituted by the Trustee shall be brought in its own name as trustee of an express
trust, and any recovery of judgment (except for any amounts payable to the Trustee pursuant to Section 7.06) shall be for the ratable benefit of the Holders of all the Debt Securities in respect of which such action was taken. 
 In case of an Event of Default hereunder the Trustee may in its discretion proceed to protect and enforce the rights vested in it by this Indenture by
such appropriate judicial proceedings as the Trustee shall deem most effectual to protect and enforce any of such rights, either 

  

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at law or in equity or in bankruptcy or otherwise, whether for the specific enforcement of any covenant or agreement contained in this Indenture or in aid of
the exercise of any power granted in this Indenture, or to enforce any other legal or equitable right vested in the Trustee by this Indenture or by law. 
 Section 6.03 Application of Monies Collected by Trustee. Any monies or other property collected by the Trustee pursuant to Section 6.02 with respect to Debt Securities of any series shall be applied, in
the order following, at the date or dates fixed by the Trustee for the distribution of such monies or other property, upon presentation of the several Debt Securities of such series in respect of which monies or other property have been collected,
and the notation thereon of the payment, if only partially paid, and upon surrender thereof if fully paid: 
 FIRST: To the
payment of all money due the Trustee pursuant to Section 7.06; 
 SECOND: In case the principal of the Outstanding Debt
Securities in respect of which such monies have been collected shall not have become due, to the payment of interest on the Debt Securities of such series in the order of the maturity of the installments of such interest, with interest (to the
extent that such interest has been collected by the Trustee) upon the overdue installments of interest at the rate or Yield to Maturity (in the case of Original Issue Discount Debt Securities) borne by the Debt Securities of such series, such
payments to be made ratably to the Persons entitled thereto, without discrimination or preference; 
 THIRD: In case the
principal of the Outstanding Debt Securities in respect of which such monies have been collected shall have become due, by declaration or otherwise, to the payment of the whole amount then owing and unpaid upon the Debt Securities of such series for
principal and premium, if any, and interest, with interest on the overdue principal and premium, if any, and (to the extent that such interest has been collected by the Trustee) upon overdue installments of interest at the rate or Yield to Maturity
(in the case of Original Issue Discount Debt Securities) borne by the Debt Securities of such series; and, in case such monies shall be insufficient to pay in full the whole amount so due and unpaid upon the Debt Securities of such series, then to
the payment of such principal and premium, if any, and interest, without preference or priority of principal and premium, if any, over interest, or of interest over principal and premium, if any, or of any installment of interest over any other
installment of interest, or of any Debt Security of such series over any Debt Security of such series, ratably to the aggregate of such principal and premium, if any, and interest; and 
 FOURTH: The remainder, if any, shall be paid to the Company, its successors or assigns, or to whomsoever may be lawfully entitled to
receive the same, or as a court of competent jurisdiction may direct. 
 The Trustee may fix a record date and payment date for any payment
to Holders pursuant to this Section 6.03. At least 15 days before such record date, the Company shall mail to each Holder and the Trustee a notice that states the record date, the payment date and amount to be paid. 
  

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 Section 6.04 Limitation on Suits by Holders. No Holder of any Debt Security of any series shall
have any right by virtue or by availing of any provision of this Indenture to institute any action or proceeding at law or in equity or in bankruptcy or otherwise, upon or under or with respect to this Indenture, the Debt Securities of any series or
for the appointment of a receiver or trustee, or for any other remedy hereunder, unless such Holder previously shall have given to the Trustee written notice of an Event of Default with respect to Debt Securities of that same series and of the
continuance thereof and unless the Holders of not less than 25% in aggregate principal amount of the Outstanding Debt Securities of that series shall have made written request upon the Trustee to institute such action or proceedings in respect of
such Event of Default in its own name as Trustee hereunder and shall have offered to the Trustee such reasonable indemnity as it may require against the costs, expenses and liabilities to be Incurred therein or thereby, and the Trustee, for 60 days
after its receipt of such notice, request and offer of indemnity shall have failed to institute any such action or proceedings and no direction inconsistent with such written request shall have been given to the Trustee pursuant to
Section 6.06; it being understood and intended, and being expressly covenanted by the Holder of every Debt Security with every other Holder and the Trustee, that no one or more Holders shall have any right in any manner whatever by virtue or by
availing of any provision of this Indenture to affect, disturb or prejudice the rights of any Holders, or to obtain or seek to obtain priority over or preference to any other such Holder, or to enforce any right under this Indenture, except in the
manner herein provided and for the equal, ratable and common benefit of all such Holders. For the protection and enforcement of the provisions of this Section 6.04, each and every Holder and the Trustee shall be entitled to such relief
as can be given either at law or in equity. 
 Notwithstanding any other provision in this Indenture, however, the right of any Holder of any
Debt Security to receive payment of the principal of, and premium, if any, and (subject to Section 2.14) interest on, such Debt Security, on or after the respective due dates expressed in such Debt Security, and to institute suit for the
enforcement of any such payment on or after such respective dates, shall not be impaired or affected without the consent of such Holder. 
 Section 6.05 Remedies Cumulative; Delay or Omission in Exercise of Rights Not a Waiver of Default. All powers and remedies given by this Article VI to the Trustee or to the Holders shall, to the extent permitted by law, be deemed
cumulative and not exclusive of any thereof or of any other powers and remedies available to the Trustee or the Holders, by judicial proceedings or otherwise, to enforce the performance or observance of the covenants and agreements contained in this
Indenture, and no delay or omission of the Trustee or of any Holder to exercise any right or power accruing upon any Default occurring and continuing as aforesaid, shall impair any such right or power, or shall be construed to be a waiver of any
such Default or an acquiescence therein; and, subject to the provisions of Section 6.04, every power and remedy given by this Article VI or by law to the Trustee or to the Holders may be exercised from time to time, and as often as shall be
deemed expedient, by the Trustee or by the Holders. 
 Section 6.06 Rights of Holders of Majority in Principal Amount of Debt Securities
To Direct Trustee and To Waive Default. The Holders of a majority in aggregate principal amount of the Debt Securities of any series at the time Outstanding shall have the right to direct the time, method, and place of conducting any proceeding
for any remedy available to the Trustee, or exercising any trust or power conferred on the Trustee, with respect to the Debt Securities of such series; provided, however, that such 

  

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direction shall not be otherwise than in accordance with law and the provisions of this Indenture, and that subject to the provisions of Section 7.01,
the Trustee shall have the right to decline to follow any such direction if the Trustee being advised by counsel shall determine that the action so directed may not lawfully be taken, or if the Trustee shall by a responsible officer or officers
determine that the action so directed would involve it in personal liability or would be unjustly prejudicial to Holders of Debt Securities of such series not taking part in such direction; and provided, further, however, that
nothing in this Indenture contained shall impair the right of the Trustee to take any action deemed proper by the Trustee and which is not inconsistent with such direction by such Holders. Prior to the acceleration of the maturity of the Debt
Securities of any series, as provided in Section 6.01, the Holders of a majority in aggregate principal amount of the Debt Securities of that series at the time Outstanding may on behalf of the Holders of all the Debt Securities of that
series waive any past Default or Event of Default and its consequences for that series specified in the terms thereof as contemplated by Section 2.05, except a Default in the payment of the principal of, and premium, if any, or interest on, any
of the Debt Securities and a Default in respect of a provision that under Section 9.02 cannot be amended without the consent of each Holder affected thereby. In case of any such waiver, such Default shall cease to exist, any Event of Default
arising therefrom shall be deemed to have been cured for every purpose of this Indenture, and the Company, the Trustee and the Holders of the Debt Securities of that series shall be restored to their former positions and rights hereunder,
respectively; but no such waiver shall extend to any subsequent or other Default or impair any right consequent thereon. 
 Section 6.07
Trustee To Give Notice of Defaults Known to It, But May Withhold Such Notice in Certain Circumstances. The Trustee shall, within 90 days after the occurrence of a Default known to it with respect to a series of Debt Securities, give to the
Holders thereof, in the manner provided in Section 12.03, notice of all Defaults with respect to such series known to the Trustee, unless such Defaults shall have been cured or waived before the giving of such notice; provided,
that, except in the case of Default in the payment of the principal of, or premium, if any, or interest on, any of the Debt Securities of such series or in the making of any sinking fund payment with respect to the Debt Securities of such series,
the Trustee shall be protected in withholding such notice if and so long as the board of directors, the executive committee or a committee of directors or responsible officers of the Trustee in good faith determine that the withholding of such
notice is in the interests of the Holders thereof. 
 Section 6.08 Requirement of an Undertaking To Pay Costs in Certain Suits Under the
Indenture or Against the Trustee. All parties to this Indenture agree, and each Holder of any Debt Security by his acceptance thereof 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 Indenture, or in any suit against the Trustee for any action taken or omitted by it as Trustee, the filing by any party litigant in such suit of an undertaking to pay the costs of such suit in the manner and to the
extent provided in the TIA, and that such court may in its discretion assess reasonable costs, including reasonable attorneys’ fees and expenses, 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; but the provisions of this Section 6.08 shall not apply to any suit instituted by the Trustee, to any suit instituted by any Holder, or group of Holders, holding in the aggregate more than ten
percent (10%) in principal amount of the Outstanding Debt Securities of that series or to any suit instituted by any Holder for the enforcement of the payment of the principal of, or premium, if any, or interest on, any Debt Security on or
after the due date for such payment expressed in such Debt Security. 
  

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 ARTICLE VII 
 CONCERNING THE TRUSTEE 
 Section 7.01 Certain Duties and Responsibilities. The Trustee, prior to the
occurrence of an Event of Default and after the curing or waiving of all Events of Default which may have occurred, undertakes to perform such duties and only such duties as are specifically set forth in this Indenture. In case an Event of Default
has occurred (which has not been cured or waived), the Trustee shall exercise such of the rights and powers vested in it by this Indenture, and use the same degree of care and skill in their exercise, as a prudent man would exercise or use under the
circumstances in the conduct of his own affairs. 
 No provision of this Indenture shall be construed to relieve the Trustee from liability
for its own negligent action, its own negligent failure to act, or its own willful misconduct, except that: 
 (a) this
subsection shall not be construed to limit the effect of the first paragraph of this Section 7.01; 
 (b) prior to the
occurrence of an Event of Default with respect to the Debt Securities of a series and after the curing or waiving of all Events of Default with respect to such series which may have occurred: 
 (i) the duties and obligations of the Trustee with respect to Debt Securities of any series shall be determined solely by the express
provisions of this Indenture, and the Trustee shall not be liable except for the performance of such duties and obligations with respect to such series as are specifically set forth in this Indenture, and no implied covenants or obligations with
respect to such series shall be read into this Indenture against the Trustee; and 
 (ii) in the absence of bad faith on the
part of the Trustee, the Trustee may conclusively rely, as to the truth of the statements and the correctness of the opinions expressed therein, upon any certificates or opinions furnished to the Trustee and conforming to the requirements of this
Indenture; but in the case of any such certificates or opinions which by any provision hereof are specifically required to be furnished to the Trustee, the Trustee shall be under a duty to examine the same to determine whether or not they conform to
the requirements of this Indenture; but the Trustee shall examine the evidence furnished to it pursuant to Sections 4.05 and 4.06 to determine whether or not such evidence conforms to the requirement of this Indenture; 
 (iii) the Trustee shall not be liable for an error of judgment made in good faith by a responsible officer, unless it shall be proved that
the Trustee was negligent in ascertaining the pertinent facts; and 
  

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 (iv) the Trustee shall not be liable with respect to any action taken or omitted to be
taken by it with respect to Debt Securities of any series in good faith in accordance with the direction of the Holders of not less than a majority in aggregate principal amount of the Outstanding Debt Securities of that series relating to the time,
method and place of conducting any proceeding for any remedy available to the Trustee, or exercising any trust or power conferred upon the Trustee, under this Indenture with respect to Debt Securities of such series. 
 None of the provisions of this Indenture shall require the Trustee to expend or risk its own funds or otherwise incur any personal financial liability in
the performance of any of its duties hereunder, or in the exercise of any of its rights or powers, if there shall be reasonable grounds for believing that repayment of such funds or adequate indemnity against such risk or liability is not reasonably
assured to it. 
 Whether or not therein expressly so provided, every provision of this Indenture relating to the conduct or affecting
the liability of or affording protection to the Trustee shall be subject to the provisions of this Section. 
 Section 7.02 Certain Rights
of Trustee. Except as otherwise provided in Section 7.01: 
 (a) the Trustee may rely and
shall be protected in acting or refraining from acting upon any resolution, certificate, statement, instrument, opinion, report, notice, request, direction, consent, order, bond, debenture, note or other paper or document (whether in its original or
facsimile form) believed by it to be genuine and to have been signed or presented by the proper party or parties; 
 (b) any
request, direction, order or demand of the Company mentioned herein shall be sufficiently evidenced by a Company Order (in each case, unless other evidence in respect thereof be herein specifically prescribed); and any resolution of the Board of
Directors may be evidenced to the Trustee by a copy thereof certified by the Secretary or an Assistant Secretary of the Company; 
 (c) the Trustee 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 or suffered or omitted by it hereunder in good faith
and in accordance with such advice or Opinion of Counsel; 
 (d) the Trustee shall be under no obligation to exercise any of
the rights or powers vested in it by this Indenture at the request, order or direction of any of the Holders of Debt Securities of any series pursuant to the provisions of this Indenture, unless such Holders shall have offered to the Trustee
reasonable security or indemnity against the costs, expenses and liabilities which may be incurred therein or thereby; 
 (e)
the Trustee shall not be liable for any action taken or omitted by it in good faith and reasonably believed by it to be authorized or within the discretion or rights or powers conferred upon it by this Indenture; 
  

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 (f) prior to the occurrence of an Event of Default and after the curing of all Events of
Default which may have occurred, the Trustee 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, approval
or other paper or document, unless requested in writing to do so by the Holders of a majority in aggregate principal amount of the then Outstanding Debt Securities of a series affected by such matter; provided, however, that if the payment
within a reasonable time to the Trustee of the costs, expenses or liabilities likely to be incurred by it in the making of such investigation is not, in the opinion of the Trustee, reasonably assured to the Trustee by the security afforded to it by
the terms of this Indenture, the Trustee may require reasonable indemnity against such costs, expenses or liabilities as a condition to so proceeding. The reasonable expense of every such investigation shall be paid by the Company or, if paid by the
Trustee, shall be repaid by the Company upon demand; 
 (g) the Trustee may execute any of the trusts or powers hereunder or
perform any duties hereunder either directly or by or through agents or attorneys and the Trustee shall not be responsible for any misconduct or negligence on the part of any agent or attorney appointed by it with due care hereunder; and 

(h) if any property other than cash shall at any time be subject to a Lien in favor of the Holders, the Trustee, if and to the extent
authorized by a receivership or bankruptcy court of competent jurisdiction or by the supplemental instrument subjecting such property to such lien, shall be entitled to make advances for the purpose of preserving such property or of discharging tax
Liens or other prior Liens or encumbrances thereon. 
 Section 7.03 Trustee Not Liable for Recitals in Indenture or in Debt
Securities. The recitals contained herein, in the Debt Securities (except the Trustee’s certificate of authentication) shall be taken as the statements of the Company and the Trustee assumes no responsibility for the correctness of the
same. The Trustee makes no representations as to the validity or sufficiency of this Indenture or of the Debt Securities of any series, except that the Trustee represents that it is duly authorized to execute and deliver this Indenture, authenticate
the Debt Securities and perform its obligations hereunder, and that the statements made by it or to be made by it in a Statement of Eligibility and Qualification on Form T-1 supplied to the Company are true and accurate. The Trustee shall not be
accountable for the use or application by the Company of any of the Debt Securities or of the proceeds thereof. 
 Section 7.04 Trustee,
Paying Agent or Registrar May Own Debt Securities. The Trustee or any paying agent or Registrar, in its individual or any other capacity, may become the owner or pledgee of Debt Securities and subject to the provisions of the TIA relating to
conflicts of interest and preferential claims may otherwise deal with the Company with the same rights it would have if it were not Trustee, paying agent or Registrar. 
 Section 7.05 Monies Received By Trustee To Be Held in Trust. Subject to the provisions of Section 11.05, all monies received by the Trustee shall, until used or applied as herein provided, be held
in trust for the purposes for which they were received, but need not be segregated from other funds except to the extent required by law. The Trustee shall be under no liability for interest on any monies received by it hereunder. So long as no
Event of Default shall have occurred and be continuing, all interest allowed on any such monies shall be paid from time to time to the Company upon a Company Order. 
  

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 Section 7.06 Compensation and Reimbursement. The Company covenants and agrees to pay in Dollars to
the Trustee from time to time, and the Trustee shall be entitled to, reasonable compensation for all services rendered by it hereunder (which shall not be limited by any provision of law in regard to the compensation of a trustee of an express
trust), and, except as otherwise expressly provided herein, the Company will pay or reimburse in Dollars the Trustee upon its request for all reasonable expenses, disbursements and advances Incurred or made by the Trustee in accordance with
any of the provisions of this Indenture (including the reasonable compensation and the expenses and disbursements of its agents, attorneys and counsel and of all Persons not regularly in its employ) except any such expense, disbursement or advances
as may arise from its negligence or bad faith. The Company also covenants to indemnify in Dollars the Trustee for, and to hold it harmless against, any loss, liability or expense Incurred without negligence, willful misconduct or bad faith on the
part of the Trustee, arising out of or in connection with the acceptance or administration of this trust or trusts hereunder, including the reasonable costs and expenses of defending itself against any claim of liability in connection with the
exercise or performance of any of its powers or duties hereunder. The obligations of the Company under this Section 7.06 to compensate and indemnify the Trustee and to pay or reimburse the Trustee for expenses, disbursements and advances shall
constitute additional indebtedness hereunder and shall survive the satisfaction and discharge of this Indenture. The Company and the Holders agree that such additional indebtedness shall be secured by a Lien prior to that of the Debt Securities upon
all property and funds held or collected by the Trustee, as such, except funds held in trust for the payment of principal of, and premium, if any, or interest on, particular Debt Securities. 
 When the Trustee incurs expenses or renders services after an Event of Default specified in Section 6.01(h) or (i) occurs, the expenses and the
compensation for the services are intended to constitute expenses of administration under any bankruptcy, insolvency, reorganization or other similar law. 
 Section 7.07 Right of Trustee To Rely on an Officers’ Certificate Where No Other Evidence Specifically Prescribed. Except as otherwise provided in Section 7.01, whenever in the administration
of the provisions of this Indenture the Trustee shall deem it necessary or desirable that a matter be proved or established prior to taking or suffering or omitting any action hereunder, such matter (unless other evidence in respect thereof be
herein specifically prescribed) may, in the absence of negligence or bad faith on the part of the Trustee, be deemed to be conclusively proved and established by an Officers’ Certificate delivered to the Trustee and such certificate, in the
absence of negligence or bad faith on the part of the Trustee, shall be full warrant to the Trustee for any action taken, suffered or omitted by it under the provisions of this Indenture upon the faith thereof. 
 Section 7.08 Separate Trustee; Replacement of Trustee. The Company may, but need not, appoint a separate Trustee for any one or more series of
Debt Securities. The Trustee may resign with respect to one or more or all series of Debt Securities at any time by giving notice to the Company. The Holders of a majority in principal amount of the Debt Securities of a particular series may remove
the Trustee for such series and only such series by so notifying the Trustee and may appoint a successor Trustee. The Company shall remove the Trustee if: 
 (a) the Trustee fails to comply with Section 7.10; 
  

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 (b) the Trustee is adjudged bankrupt or insolvent; 
 (c) a receiver or other public officer takes charge of the Trustee or its property; or 
 (d) the Trustee otherwise becomes incapable of acting. 
 If the Trustee resigns, is removed by the Company or by the Holders of a majority in principal amount of the Debt Securities of a particular series and such Holders do not reasonably promptly appoint a successor
Trustee, or if a vacancy exists in the office of Trustee for any reason (the Trustee in such event being referred to herein as the retiring Trustee), the Company shall promptly appoint a successor Trustee. No resignation or removal of the Trustee
and no appointment of a successor Trustee shall become effective until the acceptance of appointment by the successor Trustee in accordance with the applicable requirements of this Section 7.08. A successor Trustee shall deliver a written
acceptance of its appointment to the retiring Trustee and to the Company. Thereupon the resignation or removal of the retiring Trustee shall become effective, and the successor Trustee shall have all the rights, powers and duties of the Trustee
under this Indenture. The successor Trustee shall mail a notice of its succession to Holders of Debt Securities of each applicable series. The retiring Trustee shall promptly transfer all property held by it as Trustee to the successor Trustee,
subject to the Lien provided for in Section 7.06. 
 If a successor Trustee does not take office within 60 days after the
retiring Trustee gives notice of resignation or is removed, the retiring Trustee or the Holders of 25% in principal amount of the Debt Securities of any applicable series may petition any court of competent jurisdiction for the appointment of a
successor Trustee for the Debt Securities of such series. 
 If the Trustee fails to comply with Section 7.10, any Holder of Debt
Securities of any applicable series may petition any court of competent jurisdiction for the removal of the Trustee and the appointment of a successor Trustee for the Debt Securities of such series. 
 Notwithstanding the replacement of the Trustee pursuant to this Section 7.08, the Company’s obligations under Section 7.06 shall continue
for the benefit of the retiring Trustee. 
 In the case of the appointment hereunder of a separate or successor trustee with respect to the
Debt Securities of one or more series, the Company, any retiring Trustee and each successor or separate Trustee with respect to the Debt Securities of any applicable series shall execute and deliver an Indenture supplemental hereto (i) which
shall contain such provisions as shall be deemed necessary or desirable to confirm that all the rights, powers, trusts and duties of any retiring Trustee with respect to the Debt Securities of any series as to which any such retiring Trustee is not
retiring shall continue to be vested in such retiring Trustee and (ii) that shall add to or change any of the provisions of this Indenture as shall be necessary to provide for or facilitate the administration of the trusts hereunder by more
than one trustee, it being understood that nothing herein or in such supplemental Indenture shall constitute such Trustees co-trustees of the same trust and that each such separate, retiring or successor Trustee shall be Trustee of a trust or trusts
hereunder separate and apart from any trust or trusts hereunder administered by any other such Trustee. 
  

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 Section 7.09 Successor Trustee by Merger. If the Trustee consolidates with, merges or converts
into, or transfers all or substantially all its corporate trust business or assets to, another corporation or banking association, the resulting, surviving or transferee corporation or banking association without any further act shall be the
successor Trustee. In case at the time such successor or successors by merger, conversion or consolidation to the Trustee shall succeed to the trusts created by this Indenture any of the Debt Securities shall have been authenticated but not
delivered, any such successor to the Trustee may adopt the certificate of authentication of any predecessor trustee, and deliver such Debt Securities so authenticated; and in case at that time any of the Debt Securities shall not have been
authenticated, any successor to the Trustee may authenticate such Debt Securities either in the name of any predecessor hereunder or in the name of the successor to the Trustee; and in all such cases such certificates shall have the full force which
it is anywhere in the Debt Securities or in this Indenture provided that the certificate of the Trustee shall have. 
 Section 7.10
Eligibility; Disqualification. The Trustee shall at all times satisfy the requirements of Section 310(a) of the TIA. The Trustee shall have a combined capital and surplus of at least $50,000,000 as set forth in its most recent published
annual report of condition. No obligor upon the Debt Securities of a particular series or Person directly or indirectly controlling, controlled by or under common control with such obligor shall serve as Trustee upon the Debt Securities of such
series. The Trustee shall comply with Section 310(b) of the TIA; provided, however, that there shall be excluded from the operation of Section 310(b)(1) of the TIA this Indenture or any indenture or indentures under which other
securities or certificates of interest or participation in other securities of the Company are outstanding if the requirements for such exclusion set forth in Section 310(b)(1) of the TIA are met. 
 Section 7.11 Preferential Collection of Claims against Company. The Trustee shall comply with Section 311(a) of the TIA, excluding any
creditor relationship listed in Section 311(b) of the TIA. A Trustee who has resigned or been removed shall be subject to Section 311(a) of the TIA to the extent indicated therein. 
 Section 7.12 Compliance with Tax Laws. The Trustee hereby agrees to comply with all U.S. Federal income tax information reporting and withholding
requirements applicable to it with respect to payments of premium (if any) and interest on the Debt Securities, whether acting as Trustee, Registrar, paying agent or otherwise with respect to the Debt Securities. 
  

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 ARTICLE VIII 
 CONCERNING THE HOLDERS 
 Section 8.01 Evidence of Action by Holders. Whenever in this Indenture it is
provided that the Holders of a specified percentage in aggregate principal amount of the Debt Securities of any or all series may take action (including the making of any demand or request, the giving of any direction, notice, consent or
waiver or the taking of any other action) the fact that at the time of taking any such action the Holders of such specified percentage have joined therein may be evidenced by any instrument or any number of instruments of similar tenor executed by
Holders in Person or by agent or proxy appointed in writing, by the record of the Holders voting in favor thereof at any meeting of Holders duly called and held in accordance with the provisions of Section 5.02 or by a combination of such
instrument or instruments and any such record of such a meeting of Holders. 
 Section 8.02 Proof of Execution of Instruments and of
Holding of Debt Securities. Subject to the provisions of Sections 7.01, 7.02 and 12.11, proof of the execution of any instrument by a Holder or his agent or proxy shall be sufficient if made in accordance with such reasonable rules and
regulations as may be prescribed by the Trustee or in such manner as shall be satisfactory to the Trustee. 
 The ownership of Debt
Securities of any series shall be proved by the Debt Security Register or by a certificate of the Registrar for such series. 
 The Trustee
may require such additional proof of any matter referred to in this Section 8.02 as it shall deem necessary. 
 Section 8.03 Who May
Be Deemed Owner of Debt Securities. Prior to due presentment for registration of transfer of any Debt Security, the Company, the Trustee, any paying agent and any Registrar may deem and treat the Person in whose name any Debt Security shall be
registered upon the books of the Company as the absolute owner of such Debt Security (whether or not such Debt Security shall be overdue and notwithstanding any notation of ownership or other writing thereon) for the purpose of receiving payment of
or on account of the principal of and premium, if any, and (subject to Section 2.05) interest on such Debt Security and for all other purposes, and none of the Company, nor the Trustee nor any paying agent nor any Registrar shall be affected by
any notice to the contrary; and all such payments so made to any such Holder for the time being, or upon his order, shall be valid and, to the extent of the sum or sums so paid, effectual to satisfy and discharge the liability for monies payable
upon any such Debt Security. 
 None of the Company, the Trustee, any paying agent or the Registrar will have any responsibility or liability
for any aspect of the records relating to or payments made on account of beneficial ownership interests in a Global Security or for maintaining, supervising or reviewing any records relating to such beneficial ownership interests. 
 Section 8.04 Instruments Executed by Holders Bind Future Holders. At any time prior to (but not after) the evidencing to the Trustee, as
provided in Section 8.01, of the taking of any action by the Holders of the percentage in aggregate principal amount of the Debt Securities of any series specified in this Indenture in connection with such action and subject to the
following paragraph, any Holder of a Debt Security which is shown by the evidence to be included in the Debt Securities the Holders of which have consented to such action may, by filing written notice with the Trustee at its corporate trust office
and upon proof of holding as provided in Section 8.02, revoke such action so far as concerns such Debt Security. Except as aforesaid any such action taken by the Holder of any Debt Security shall be conclusive and binding upon such
Holder and upon all future Holders and owners of such Debt Security, 

  

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and of any Debt Security issued upon transfer thereof or in exchange or substitution therefor, irrespective of whether or not any notation in regard thereto
is made upon such Debt Security or such other Debt Securities. Any action taken by the Holders of the percentage in aggregate principal amount of the Debt Securities of any series specified in this Indenture in connection with such action shall be
conclusively binding upon the Company, the Trustee and the Holders of all the Debt Securities of such series. 
 The Company may, but shall
not be obligated to, fix a record date for the purpose of determining the Holders of Debt Securities entitled to give their consent or take any other action required or permitted to be taken pursuant to this Indenture. If a record date is fixed,
then notwithstanding the immediately preceding paragraph, those Persons who were Holders of Debt Securities at such record date (or their duly designated proxies), and only those Persons, shall be entitled to give such consent or to revoke any
consent previously given or to take any such action, whether or not such Persons continue to be Holders of Debt Securities after such record date. No such consent shall be valid or effective for more than 120 days after such record date unless the
consent of the Holders of the percentage in aggregate principal amount of the Debt Securities of such series specified in this Indenture shall have been received within such 120-day period. 
 ARTICLE IX 
 SUPPLEMENTAL INDENTURES 
 Section 9.01 Purposes for Which Supplemental Indenture May Be Entered into without Consent of Holders. The Company (when authorized by or pursuant
to a Board Resolution) and the Trustee may from time to time and at any time, without the consent of Holders, enter into an Indenture or Indentures supplemental hereto (which shall conform to the provisions of the TIA as in force at the date of the
execution thereof) for one or more of the following purposes: 
 (a) to evidence the succession pursuant to Article X of
another Person to the Company or successive successions, and the assumption by the Successor Company (as defined in Section 10.01) of the covenants, agreements and obligations of the Company in this Indenture and in the Debt Securities;

 (b) to surrender any right or power herein conferred upon the Company, to add to the covenants of the Company such further
covenants, restrictions, conditions or provisions for the protection of the Holders of all or any series of Debt Securities (and if such covenants are to be for the benefit of less than all series of Debt Securities, stating that such covenants are
expressly being included solely for the benefit of such series) as the Board of Directors of the Company shall consider to be for the protection of the Holders of such Debt Securities, and to make the occurrence, or the occurrence and continuance,
of a Default in any of such additional covenants, restrictions, conditions or provisions a Default or an Event of Default permitting the enforcement of all or any of the several remedies provided in this Indenture; provided, that in
respect of any such additional covenant, restriction, condition or provision such supplemental Indenture may provide for a particular period of grace after 

  

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Default (which period may be shorter or longer than that allowed in the case of other Defaults) or may provide for an immediate enforcement upon such Default
or may limit the remedies available to the Trustee upon such Default or may limit the right of the Holders of a majority in aggregate principal amount of any or all series of Debt Securities to waive such default; 
 (c) to cure any ambiguity or omission or to correct or supplement any provision contained herein, in any supplemental Indenture or in any
Debt Securities of any series that may be defective or inconsistent with any other provision contained herein, in any supplemental Indenture or in the Debt Securities of such series; to convey, transfer, assign, mortgage or pledge any property to or
with the Trustee, or to make such other provisions in regard to matters or questions arising under this Indenture as shall not adversely affect the interests of any Holders of Debt Securities of any series; 
 (d) to modify or amend this Indenture in such a manner as to permit the qualification of this Indenture or any Indenture supplemental
hereto under the TIA as then in effect, except that nothing herein contained shall permit or authorize the inclusion in any Indenture supplemental hereto of the provisions referred to in Section 316(a)(2) of the TIA; 
 (e) to comply with Article X; 
 (f) to secure any or all of the Debt Securities; 
 (g) to make provisions with respect to
conversion or exchange rights of Holders of Debt Securities of any series; 
 (h) to make any change that does not adversely
affect the rights of any Holder; 
 (i) to add to, change or eliminate any of the provisions of this Indenture in respect of
one or more series of Debt Securities; provided, however, that any such addition, change or elimination not otherwise permitted under this Section 9.01 shall neither apply to any Debt Security of any series created prior to the execution
of such supplemental Indenture and entitled to the benefit of such provision nor modify the rights of the Holder of any such Debt Security with respect to such provision or shall become effective only when there is no such Debt Security Outstanding;

 (j) to evidence and provide for the acceptance of appointment hereunder by a successor or separate Trustee with respect to
the Debt Securities of one or more series and to add to or change any of the provisions of this Indenture as shall be necessary to provide for or facilitate the administration of the trusts hereunder by more than one Trustee; 
 (k) to establish the form or terms of Debt Securities of any series as permitted by Sections 2.01 and 2.05; and 
  

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 (l) to provide for uncertificated Debt Securities in addition to or in place of
certificated Debt Securities (provided that the uncertificated Debt Securities are issued in registered form for purposes of Section 163(f) of the Internal Revenue Code of 1986, as amended, or in a manner such that the uncertificated
Debt Securities are described in Section 163(f)(2)(B) of the Internal Revenue Code of 1986, as amended). 
 The Trustee is hereby
authorized to join with the Company in the execution of any such supplemental Indenture, to make any further appropriate agreements and stipulations which may be therein contained and to accept the conveyance, transfer, assignment, mortgage or
pledge of any property thereunder, but the Trustee shall not be obligated to enter into any such supplemental Indenture which affects the Trustee’s own rights, duties or immunities under this Indenture or otherwise. 
 Any supplemental Indenture authorized by the provisions of this Section 9.01 may be executed by the Company and the Trustee without the consent of
the Holders of any of the Debt Securities at the time Outstanding, notwithstanding any of the provisions of Section 9.02. 
 After an
amendment under this Section 9.01 becomes effective, the Company shall mail to Holders of Debt Securities of each series affected thereby a notice briefly describing such amendment. The failure to give such notice to all such Holders, or any
defect therein, shall not impair or affect the validity of an amendment under this Section 9.01. 
 Section 9.02 Modification of
Indenture with Consent of Holders of Debt Securities. Without notice to any Holder but with the consent (evidenced as provided in Section 8.01) of the Holders of not less than a majority in aggregate principal amount of the
Outstanding Debt Securities of each series affected by such supplemental Indenture, the Company, (when authorized by or pursuant to a Board Resolution) and the Trustee may from time to time and at any time enter into an Indenture or Indentures
supplemental hereto (which shall conform to the provisions of the TIA as in force at the date of execution thereof) for the purpose of adding any provisions to or changing in any manner or eliminating any of the provisions of this Indenture or of
any supplemental Indenture or of modifying in any manner the rights of the Holders of the Debt Securities of such series; provided, that no such supplemental Indenture, without the consent of the Holders of each Debt Security so affected,
shall reduce the percentage in principal amount of Debt Securities of any series whose Holders must consent to an amendment; reduce the rate of or extend the time for payment of interest on any Debt Security; reduce the principal of or extend the
Stated Maturity of any Debt Security; reduce the premium payable upon the redemption of any Debt Security or change the time at which any Debt Security may or shall be redeemed in accordance with Article III; change the duration of the maximum
consecutive period, if any, that payments of interest on such Debt Securities may be deferred, if applicable; release any security that may have been granted in respect of the Debt Securities; make any change in Section 6.06 or this
Section 9.02; or make any change that adversely affects the right to convert or exchange any Debt Security into or for Common Equity or other securities, cash or property in accordance with its terms. 
 A supplemental Indenture which changes or eliminates any covenant or other provision of this Indenture which has been expressly included solely for the
benefit of one or more particular series of Debt Securities or which modifies the rights of the Holders of Debt Securities of such series with respect to such covenant or other provision, shall be deemed not to affect the rights under this Indenture
of the Holders of Debt Securities of any other series. 
  

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 Upon the request of the Company, accompanied by a copy of a resolution of the Board of Directors of the
Company authorizing the execution of any such supplemental Indenture, and upon the filing with the Trustee of evidence of the consent of Holders as aforesaid, the Trustee shall join with the Company in the execution of such supplemental Indenture
unless such supplemental Indenture affects the Trustee’s own rights, duties or immunities under this Indenture or otherwise, in which case the Trustee may in its discretion but shall not be obligated to enter into such supplemental Indenture.

 It shall not be necessary for the consent of the Holders under this Section 9.02 to approve the particular form of any proposed
supplemental Indenture, but it shall be sufficient if such consent shall approve the substance thereof. 
 After an amendment under this
Section 9.02 becomes effective, the Company shall mail to Holders of Debt Securities of each series affected thereby a notice briefly describing such amendment. The failure to give such notice to all such Holders, or any defect therein, shall
not impair or affect the validity of an amendment under this Section 9.02. 
 Section 9.03 Effect of Supplemental Indentures.
Upon the execution of any supplemental Indenture pursuant to the provisions of this Article IX, this Indenture shall be and be deemed to be modified and amended in accordance therewith and the respective rights, limitations of rights, obligations,
duties and immunities under this Indenture of the Trustee, the Company and the Holders shall thereafter be determined, exercised and enforced hereunder subject in all respects to such modifications and amendments, and all the terms and conditions of
any such supplemental Indenture shall be and be deemed to be part of the terms and conditions of this Indenture for any and all purposes. 
 The Trustee, subject to the provisions of Sections 7.01 and 7.02, may receive an Officers’ Certificate and an Opinion of Counsel as conclusive evidence that any such supplemental Indenture complies with the provisions of this Article
IX. 
 Section 9.04 Debt Securities May Bear Notation of Changes By Supplemental Indentures. Debt Securities of any series
authenticated and delivered after the execution of any supplemental Indenture pursuant to the provisions of this Article IX may, and shall if required by the Trustee, bear a notation in form approved by the Trustee as to any matter provided
for in such supplemental Indenture. New Debt Securities of any series so modified as to conform, in the opinion of the Trustee and the Board of Directors, to any modification of this Indenture contained in any such supplemental Indenture may be
prepared and executed by the Company, authenticated by the Trustee and delivered in exchange for the Debt Securities of such series then Outstanding. Failure to make the appropriate notation or to issue a new Debt Security of such series shall not
affect the validity of such amendment. 
  

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 ARTICLE X 
 CONSOLIDATION, MERGER, SALE OR CONVEYANCE 
 Section 10.01 Consolidations and Mergers of the Company.
The Company shall not consolidate with or merge with or into any Person, or convey, transfer or lease all or substantially all its assets, unless: (a) either (i) the Company shall be the continuing Person in the case of a merger or
(ii) the resulting, surviving or transferee Person if other than the Company (the “Successor Company”) shall be a corporation organized and existing under the laws of the United States, any State thereof or the District of
Columbia and the Successor Company shall expressly assume, by an Indenture supplemental hereto, executed and delivered to the Trustee, in form satisfactory to the Trustee, all the obligations of the Company under the Debt Securities according to
their tenor, and this Indenture; (b) immediately after giving effect to such transaction (and treating any Indebtedness which becomes an obligation of the Successor Company or any Subsidiary of the Company as a result of such transaction as
having been incurred by the Successor Company or such Subsidiary at the time of such transaction), no Default or Event of Default would occur or be continuing; and (c) the Company shall have delivered to the Trustee an Officers’
Certificate and an Opinion of Counsel, each stating that such consolidation, merger or transfer and such supplemental Indenture (if any) complies with this Indenture. 
 Section 10.02 Rights and Duties of Successor Company. In case of any consolidation or merger, or conveyance or transfer of the assets of the Company as an entirety or substantially as an entirety in accordance
with Section 10.01, the Successor Company shall succeed to and be substituted for the Company with the same effect as if it had been named herein as the party of the first part, and the predecessor corporation shall be relieved of any further
obligation under the Indenture and the Debt Securities. The Successor Company thereupon may cause to be signed, and may issue either in its own name or in the name of the Company, any or all the Debt Securities issuable hereunder which theretofore
shall not have been signed by the Company and delivered to the Trustee; and, upon the order of the Successor Company, instead of the Company, and subject to all the terms, conditions and limitations in this Indenture prescribed, the Trustee shall
authenticate and shall deliver any Debt Securities which previously shall have been signed and delivered by the officers of the Company to the Trustee for authentication, and any Debt Securities which the Successor Company thereafter shall cause to
be signed and delivered to the Trustee for that purpose. All the Debt Securities so issued shall in all respects have the same legal rank and benefit under this Indenture as the Debt Securities theretofore or thereafter issued in accordance with the
terms of this Indenture as though all such Debt Securities had been issued at the date of the execution hereof. 
 In case of any such
consolidation, merger, sale or conveyance such changes in phraseology and form (but not in substance) may be made in the Debt Securities thereto thereafter to be issued as may be appropriate. 
  

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 ARTICLE XI 
 SATISFACTION AND DISCHARGE OF INDENTURE; 
 DEFEASANCE; UNCLAIMED MONIES 
 Section 11.01 Applicability of Article. If, pursuant to Section 2.05, provision is made for the defeasance of Debt Securities of a series,
then the provisions of this Article XI relating to defeasance of Debt Securities shall be applicable except as otherwise specified pursuant to Section 2.05 for Debt Securities of such series. 
 Section 11.02 Satisfaction and Discharge of Indenture; Defeasance. 
 (a) If at any time the Company shall have delivered to the Trustee for cancellation all Debt Securities of any series theretofore
authenticated and delivered (other than any Debt Securities of such series which shall have been destroyed, lost or stolen and which shall have been replaced or paid as provided in Section 2.11 and Debt Securities for whose payment money
has theretofore been deposited in trust and thereafter repaid to the Company as provided in Section 11.05) or all Debt Securities of such series not theretofore delivered to the Trustee for cancellation shall have become due and payable,
or are by their terms to become due and payable within one year or are to be called for redemption within one year under arrangements satisfactory to the Trustee for the giving of notice of redemption, and the Company shall deposit with the Trustee
as trust funds the entire amount sufficient to pay at maturity or upon redemption all Debt Securities of such series not theretofore delivered to the Trustee for cancellation, including principal and premium, if any, and interest due or to become
due on such date of maturity or redemption date, as the case may be, and if in either case the Company shall also pay or cause to be paid all other sums payable hereunder by the Company, then this Indenture shall cease to be of further effect
(except as to any surviving rights of registration of transfer or exchange of such Debt Securities herein expressly provided for and rights to receive payments of principal of, and premium, if any, and interest on, such Debt Securities) with
respect to the Debt Securities of such series, and the Trustee, on demand of the Company accompanied by an Officers’ Certificate and an Opinion of Counsel and at the cost and expense of the Company, shall execute proper instruments
acknowledging satisfaction of and discharging this Indenture. 
 (b) Subject to Sections 11.02(c), 11.03 and 11.07, the
Company at any time may terminate, with respect to Debt Securities of a particular series, all its obligations under the Debt Securities of such series and this Indenture with respect to the Debt Securities of such series (“legal defeasance
option”) or the operation of Sections 6.01 (e), (f), (g) and (j) (“covenant defeasance option”). The Company may exercise its legal defeasance option notwithstanding its prior exercise of its covenant defeasance
option. 
 If the Company exercises its legal defeasance option, payment of the Debt Securities of the defeased series may not be accelerated
because of an Event of Default. If the Company exercises its covenant defeasance option, payment of the Debt Securities of the defeased series may not be accelerated because of an Event of Default specified in Sections 6.01 (e), (f), (g) and
(j) (except to the extent covenants or agreements referenced in such Sections remain applicable). 
  

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 Upon satisfaction of the conditions set forth herein and upon request of the Company, the Trustee shall
acknowledge in writing the discharge of those obligations that the Company terminates. 
 (c) Notwithstanding clauses
(a) and (b) above, the Company’s obligations in Sections 2.09, 2.11, 4.02, 4.04, 5.01, 7.06, 7.10, 11.05, 11.06 and 11.07 shall survive until the Debt Securities of the defeased series have been paid in full. Thereafter, the
Company’s obligations in Sections 7.06, 11.05 and 11.06 shall survive. 
 Section 11.03 Conditions of Defeasance. The Company may
exercise its legal defeasance option or its covenant defeasance option with respect to Debt Securities of a particular series only if: 
 (a) the Company irrevocably deposits in trust with the Trustee money or U.S. Government Obligations for the payment of principal of, and premium, if any, and interest on, the Debt Securities of such series to maturity
or redemption, as the case may be; 
 (b) the Company delivers to the Trustee a certificate from a nationally recognized firm
of independent accountants expressing their opinion that the payments of principal and interest when due and without reinvestment on the deposited U.S. Government Obligations plus any deposited money without investment will provide cash at such
times and in such amounts as will be sufficient to pay the principal, premium and interest when due on all the Debt Securities of such series to maturity or redemption, as the case may be; 
 (c) 123 days pass after the deposit is made and during the 123-day period no Default specified in Section 6.01(h) or (i) with
respect to the Company occurs which is continuing at the end of the period; 
 (d) no Default has occurred and is continuing
on the date of such deposit and after giving effect thereto; 
 (e) the deposit does not constitute a default under any other
agreement binding on the Company; 
 (f) the Company delivers to the Trustee an Opinion of Counsel to the effect that the
trust resulting from the deposit does not constitute, or is qualified as, a regulated investment company under the Investment Company Act of 1940; 
 (g) in the event of the legal defeasance option, the Company shall have delivered to the Trustee an Opinion of Counsel stating that the Company has received from the Internal Revenue Service a ruling, or since the
date of this Indenture there has been a change in the applicable Federal income tax law, in either case of the effect that, and based thereon such Opinion of Counsel shall confirm that, the Holders of Debt Securities of such series will not
recognize income, gain or loss for Federal income tax purposes as a result of such defeasance and will be subject to Federal income tax on the same amounts, in the same manner and at the same times as would have been the case if such defeasance had
not occurred; 
  

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 (h) in the event of the covenant defeasance option, the Company shall have delivered to
the Trustee an Opinion of Counsel to the effect that the Holders of Debt Securities of such series will not recognize income, gain or loss for Federal income tax purposes as a result of such covenant defeasance and will be subject to Federal income
tax on the same amounts, in the same manner and at the same times as would have been the case if such covenant defeasance had not occurred; and 
 (i) the Company delivers to the Trustee an Officers’ Certificate and an Opinion of Counsel, each stating that all conditions precedent to the defeasance and discharge of the Debt Securities of such series as
contemplated by this Article XI have been complied with. 
 Before or after a deposit, the Company may make arrangements satisfactory to the
Trustee for the redemption of Debt Securities of such series at a future date in accordance with Article III. 
 Section 11.04 Application
of Trust Money. The Trustee shall hold in trust money or U.S. Government Obligations deposited with it pursuant to this Article XI. It shall apply the deposited money and the money from U.S. Government Obligations through any paying agent and in
accordance with this Indenture to the payment of principal of, and premium, if any, and interest on, the Debt Securities of the defeased series. 
 Section 11.05 Repayment to Company. The Trustee and any paying agent shall promptly turn over to the Company upon request any excess money or securities held by them at any time. Subject to any applicable abandoned property law, the
Trustee and any paying agent shall pay to the Company upon request any money held by them for the payment of principal, premium or interest that remains unclaimed for two years, and, thereafter, Holders entitled to such money must look to the
Company for payment as general creditors. 
 Section 11.06 Indemnity for U.S. Government Obligations. The Company shall pay and shall
indemnify the Trustee and the Holders against any tax, fee or other charge imposed on or assessed against deposited U.S. Government Obligations or the principal and interest received on such U.S. Government Obligations. 
 Section 11.07 Reinstatement. If the Trustee or any paying agent is unable to apply any money or U.S. Government Obligations in accordance with
this Article XI by reason of any legal proceeding or by reason of any order or judgment of any court or government authority enjoining, restraining or otherwise prohibiting such application, the Company’s obligations under this Indenture and
the Debt Securities of the defeased series shall be revived and reinstated as though no deposit had occurred pursuant to this Article XI until such time as the Trustee or any paying agent is permitted to apply all such money or U.S. Government
Obligations in accordance with this Article XI, provided, however, that if the Company makes any payment of principal of, any premium or Interest on or with respect to any such Debt Security following reinstatement of its obligations, the
Company shall be subrogated to the rights (if any) of the Holders of such Debt Securities to receive such payment from the money so held in trust. 
  

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 ARTICLE XII 
 MISCELLANEOUS PROVISIONS 
 Section 12.01 Successors and Assigns of Company Bound by Indenture. All
the covenants, stipulations, promises and agreements in this Indenture contained by or in behalf of the Company or the Trustee shall bind its respective successors and assigns, whether so expressed or not. 
 Section 12.02 Acts of Board, Committee or Officer of Successor Company Valid. Any act or proceeding by any provision of this Indenture authorized
or required to be done or performed by any board, committee or officer of the Company shall and may be done and performed with like force and effect by the like board, committee or officer of any Successor Company. 
 Section 12.03 Required Notices or Demands. Any notice or communication by the Company or the Trustee to the others is duly given if in writing and
delivered in Person or mailed by registered or certified mail (return receipt requested), telex, telecopier or overnight air courier guaranteeing next day delivery, to the other’s address: 
 If to the Company: 
 Bill Barrett Corporation 
 1099 18th Street 
 Suite 2300 
 Denver, CO 80202 
 Attention: General Counsel 
 If to the Trustee: 
 Deutsche Bank Trust Company Americas 
 60 Wall Street 
 NYC MS 60-2710 
 New York, NY 10005 
 Attention: Trust and Securities Services 
 The Company or the Trustee by notice to the other may designate additional or different addresses for subsequent notices or communications. 

All notices and communications shall be deemed to have been duly given: at the time delivered by hand, if personally delivered; five Business Days
after being deposited in the mail, postage prepaid, if mailed; when answered back, if telexed; on the first Business Day on or after being sent, if telecopied and the sender receives confirmation of successful transmission; and the next Business Day
after timely delivery to the courier, if sent by overnight air courier guaranteeing next day delivery. 
  

 -65- 

 Any notice required or permitted to a Holder pursuant to the provisions of this Indenture shall be deemed
to be properly mailed by being deposited postage prepaid in a post office letter box in the United States addressed to such Holder at the address of such Holder as shown on the Debt Security Register. Any report pursuant to Section 313 of the
TIA shall be transmitted in compliance with subsection (c) therein. 
 Notwithstanding the foregoing, any notice to Holders of Floating
Rate Debt Securities regarding the determination of a periodic rate of interest, if such notice is required pursuant to Section 2.05, shall be sufficiently given if given in the manner specified pursuant to Section 2.05. 
 In the event of suspension of regular mail service or by reason of any other cause it shall be impracticable to give notice by mail, then such
notification as shall be given with the approval of the Trustee shall constitute sufficient notice for every purpose hereunder. 
 In the
event of suspension of publication of any Authorized Newspaper or by reason of any other cause it shall be impracticable to give notice by publication, then such notification as shall be given with the approval of the Trustee shall constitute
sufficient notice for every purpose hereunder. 
 Failure to mail a notice or communication to a Holder or any defect in it or any defect in
any notice by publication as to a Holder shall not affect the sufficiency of such notice with respect to other Holders. If a notice or communication is mailed or published in the manner provided above, it is conclusively presumed duly given.

 Section 12.04 Indenture and Debt Securities To Be Construed in accordance with the Laws of the State of New York. This Indenture,
each Debt Security shall be deemed to be New York contracts, and for all purposes shall be construed in accordance with the laws of said State (without reference to principles of conflicts of law). 
 Section 12.05 Officers’ Certificate and Opinion of Counsel To Be Furnished upon Application or Demand by the Company. Upon any application or
demand by the Company to the Trustee to take any action under any of the provisions of this Indenture, the Company shall furnish to the Trustee an Officers’ Certificate stating that all conditions precedent provided for in this Indenture
relating to the proposed action have been complied with and an Opinion of Counsel stating that, in the opinion of such counsel, all such conditions precedent have been complied with, except that in the case of any such application or demand as to
which the furnishing of such document is specifically required by any provision of this Indenture relating to such particular application or demand, no additional certificate or opinion need be furnished. 
 Each certificate or opinion provided for in this Indenture and delivered to the Trustee with respect to compliance with a condition or covenant
provided for in this Indenture shall include (a) a statement that the Person making such certificate or opinion has read such covenant or condition, (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 Person, he or she has made such examination or investigation as is necessary to enable him or
her 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 or not, in the opinion of such Person, such condition or covenant has been complied with. 
  

 -66- 

 Section 12.06 Payments Due on Legal Holidays. In any case where the date of maturity of interest
on or principal of and premium, if any, on the Debt Securities of a series or the date fixed for redemption or repayment of any Debt Security or the making of any sinking fund payment shall not be a business day at any Place of Payment for the Debt
Securities of such series, then payment of interest or principal and premium, if any, or the making of such sinking fund payment need not be made on such date at such Place of Payment, but may be made on the next succeeding business day at such
Place of Payment with the same force and effect as if made on the date of maturity or the date fixed for redemption, and no interest shall accrue for the period after such date. If a record date is not a business day, the record date shall not be
affected. 
 Section 12.07 Provisions Required by TIA to Control. If and to the extent that any provision of this Indenture limits,
qualifies or conflicts with another provision included in this Indenture which is required to be included in this Indenture by any of Sections 310 to 318, inclusive, of the TIA, such required provision shall control. 
 Section 12.08 Computation of Interest on Debt Securities. Interest, if any, on the Debt Securities shall be computed on the basis of a 360-day
year of twelve 30-day months, except as may otherwise be provided pursuant to Section 2.05. 
 Section 12.09 Rules by Trustee,
Paying Agent and Registrar. The Trustee may make reasonable rules for action by or a meeting of Holders. The Registrar and any paying agent may make reasonable rules for their functions. 
 Section 12.10 No Recourse against Others. An incorporator or any past, present or future director, officer, employee or stockholder, as such, of
the Company shall not have any liability for any obligations of the Company under the Debt Securities or this Indenture or for any claim based on, in respect of or by reason of such obligations or their creation. By accepting a Debt Security, each
Holder shall waive and release all such liability. The waiver and release shall be part of the consideration for the issue of the Debt Securities. 
 Section 12.11 Severability. In case any provision in this Indenture or the Debt Securities shall be invalid, illegal or unenforceable, the validity, legality and enforceability of the remaining provisions shall not in any way be
affected or impaired thereby. 
 Section 12.12 Effect of Headings. The article and section headings herein and in the Table of
Contents are for convenience only and shall not affect the construction hereof. 
 Section 12.13 Indenture May Be Executed in
Counterparts. This Indenture may be executed in any number of counterparts, each of which shall be an original; but such counterparts shall together constitute but one and the same instrument. 
  

 -67- 

 Section 12.14 Patriot Act. The parties hereto acknowledge that in accordance with Section 326
of the USA Patriot Act, Deutsche Bank Trust Company Americas, like all financial institutions and in order to help fight the funding of terrorism and money laundering, is required to obtain, verify, and record information that identifies each Person
or legal entity that establishes a relationship or opens an account. The parties to this Indenture agree that they will provide Deutsche Bank Trust Company Americas with such information as it may request in order for Deutsche Bank Trust Company
Americas to satisfy the requirements of the USA Patriot Act. 
 The Trustee hereby accepts the trusts in this Indenture upon the terms and
conditions herein set forth. 
  

 -68- 

 IN WITNESS WHEREOF, the parties hereto have caused this Indenture to be duly signed as of the date first
written above. 
  

					
	BILL BARRETT CORPORATION
		
	By:	 	 
		 	Name:	 	
		 	Title:	 	
	
	DEUTSCHE BANK TRUST COMPANY AMERICAS, as Trustee
		
	By:	 	 
		 	Name:	 	
		 	Title:	 	
		
	By:	 	 
		 	Name:	 	
		 	Title:	 	

  

 -69-First Supplemental Indenture

 EXHIBIT 4.2 
  
  
  
 BILL BARRETT CORPORATION, 
 as Issuer 
 5.00% Convertible Senior Notes due
2028 
  
  
 FIRST SUPPLEMENTAL INDENTURE 
 Dated as of
March 12, 2008 
  
  
 DEUTSCHE BANK TRUST COMPANY AMERICAS 
 as
Trustee 
  
  
  

 TABLE OF CONTENTS 
  

					
	 	  	 	  	Page
	ARTICLE 1
	
	ISSUE AND DESCRIPTION OF NOTES
			
	Section 1.01	  	Designation and Amount; Ranking Payments; Denomination	  	2
	Section 1.02	  	Form of Notes	  	3
	Section 1.03	  	Additional Notes	  	3
	Section 1.04	  	Execution and Authentication	  	4
	Section 1.05	  	Non-Business Day Payments	  	4
	
	ARTICLE 2
	
	DEFINITIONS AND INCORPORATION BY REFERENCE
			
	Section 2.01	  	Definitions	  	4
	Section 2.02	  	Other Definitions	  	14
	
	ARTICLE 3
	
	REDEMPTION AND PURCHASES
			
	Section 3.01	  	Company’s Right to Redeem; Notices to Trustee	  	15
	Section 3.02	  	Selection of Notes to Be Redeemed	  	15
	Section 3.03	  	Notice of Redemption	  	15
	Section 3.04	  	Effect of Notice of Redemption	  	16
	Section 3.05	  	Deposit of Redemption Price	  	16
	Section 3.06	  	Notes Redeemed in Part	  	17
	Section 3.07	  	Purchase of Notes by the Company at Option of the Holder	  	17
	Section 3.08	  	Purchase of Notes at Option of the Holder upon a Fundamental Change	  	19
	Section 3.09	  	Effect of Purchase Notice or Fundamental Change Purchase Notice	  	22
	Section 3.10	  	Deposit of Purchase Price or Fundamental Change Purchase Price	  	23
	Section 3.11	  	Notes Purchased in Part	  	23
	Section 3.12	  	Covenant to Comply with Securities Laws upon Purchase of Notes	  	23
	Section 3.13	  	Repayment to the Company	  	23
	Section 3.14	  	No Fundamental Change Purchase Following Acceleration	  	24
	Section 3.15	  	No Limit on Other Purchases	  	24
	
	ARTICLE 4
	
	COVENANTS
			
	Section 4.01	  	Payments	  	24
	Section 4.02	  	Maintenance of Office or Agency	  	25
	Section 4.03	  	Commission and Other Reports	  	25
	Section 4.04	  	Existence	  	25

  

 -i- 

					
	 	  	 	  	Page
	ARTICLE 5
	
	SUCCESSOR CORPORATION
			
	Section 5.01	  	When Company May Merge or Transfer Assets	  	26
	
	ARTICLE 6
	
	DEFAULTS AND REMEDIES
			
	Section 6.01	  	Events of Default	  	26
	Section 6.02	  	Acceleration	  	28
	Section 6.03	  	Other Remedies	  	29
	Section 6.04	  	Waiver of Past Defaults	  	29
	Section 6.05	  	Control by Majority	  	29
	Section 6.06	  	Limitation on Suits	  	29
	Section 6.07	  	Rights of Holders to Receive Payment	  	30
	Section 6.08	  	Collection Suit by Trustee	  	30
	Section 6.09	  	Trustee May File Proofs of Claim	  	30
	Section 6.10	  	Priorities	  	30
	Section 6.11	  	Undertaking for Costs	  	31
	Section 6.12	  	Waiver of Stay or Extension Laws	  	31
	
	ARTICLE 7
	
	DISCHARGE OF INDENTURE
			
	Section 7.01	  	Discharge of Liability on Notes	  	31
	Section 7.02	  	Repayment to the Company	  	31
	
	ARTICLE 8
	
	AMENDMENTS
			
	Section 8.01	  	Without Consent of Holders	  	32
	Section 8.02	  	With Consent of Holders	  	33
	Section 8.03	  	Compliance with Trust Indenture Act	  	35
	Section 8.04	  	Revocation and Effect of Consents, Waivers and Actions	  	35
	Section 8.05	  	Notation on or Exchange of Notes	  	35
	Section 8.06	  	Trustee to Sign Supplemental Indentures	  	35
	Section 8.07	  	Effect of Supplemental Indentures	  	36
	
	ARTICLE 9
	
	CONVERSIONS
			
	Section 9.01	  	Conversion Rights	  	36
	Section 9.02	  	Conversion Consideration	  	39
	Section 9.03	  	Conversion Procedures	  	40
	Section 9.04	  	Taxes on Conversions	  	42
	Section 9.05	  	Company to Provide Stock	  	42

  

 -ii- 

					
	 	  	 	  	Page
	Section 9.06	  	Base Conversion Price Adjustments	  	43
	Section 9.07	  	No Adjustment	  	47
	Section 9.08	  	Adjustment for Tax Purposes	  	47
	Section 9.09	  	Temporary Reduction of Base Conversion Price	  	48
	Section 9.10	  	Effect of Reclassification, Consolidation, Merger or Sale on Conversion Privilege	  	48
	Section 9.11	  	Notice of Adjustment	  	49
	Section 9.12	  	Company Determination Final; Adjustments to Nearest One-Ten Thousandth (1/10,000) of a Share	  	49
	Section 9.13	  	Trustee’s Adjustment Disclaimer	  	49
	Section 9.14	  	Limitation on Adjustments	  	50
	Section 9.15	  	Adjustment to Applicable Conversion Rate upon Certain Fundamental Change Transactions	  	50
	
	ARTICLE 10
	
	 PAYMENT OF INTEREST

			
	Section 10.01	  	Payment of Interest	  	52
	Section 10.02	  	Additional Interest	  	53
	Section 10.03	  	Defaulted Interest	  	53
	Section 10.04	  	Interest Rights Preserved	  	53
	
	ARTICLE 11
	
	SUBSIDIARY GUARANTEES
			
	Section 11.01	  	Subsidiary Guarantees	  	54
	Section 11.02	  	Release	  	55
	
	ARTICLE 12
	
	MISCELLANEOUS
			
	Section 12.01	  	Communication by Holders with Other Holders	  	55
	Section 12.02	  	Certificate and Opinion as to Conditions Precedent	  	56
	Section 12.03	  	Statements Required in Certificate or Opinion	  	56
	Section 12.04	  	Separability Clause	  	56
	Section 12.05	  	Governing Law	  	56
	Section 12.06	  	Submission to Jurisdiction; No Liability for Certain Persons	  	56
	Section 12.07	  	Patriot Act	  	57
	Section 12.08	  	Successors	  	57
	Section 12.09	  	Table of Contents; Headings	  	57
	Section 12.10	  	Multiple Originals	  	57
	Section 12.11	  	Scope of Supplemental Indenture	  	57
	Section 12.12	  	Ratification and Incorporation of Base Indenture	  	57
	Section 12.13	  	No Security Interest Created	  	57
	Section 12.14	  	Trust Indenture Act	  	57
	Section 12.15	  	Covenants Not Applicable	  	57
	Section 12.16	  	Calculations	  	58

  

 -iii- 

					
	 	  	 	  	Page
	 Exhibit A
	  	Form of Note	  	A-1
	 Exhibit B
	  	Subsidiary Guarantee Provisions	  	B-1

  

 -iv- 

 FIRST SUPPLEMENTAL INDENTURE 
 THIS FIRST SUPPLEMENTAL INDENTURE, dated as of March 12, 2008 (this “Supplemental Indenture”), is entered into between Bill
Barrett Corporation, a Delaware corporation (the “Company”), and Deutsche Bank Trust Company Americas, a New York State banking corporation, as trustee (the “Trustee”). Capitalized terms used herein and not
otherwise defined have the meanings set forth in the Base Indenture (as defined below). 
 RECITALS 
 The Company and the Trustee entered into that certain Indenture, dated as of March 12, 2008 (the “Base Indenture”), pursuant to
which the Company may from time to time issue its senior indebtedness in the form of debentures, notes, bonds or other evidences of indebtedness (collectively, the “Debt Securities”). 
 WHEREAS, Section 9.01 of the Base Indenture provides that the Company, when authorized by a resolution of the Board of Directors of the
Company, and the Trustee may, without the consent of the Holders of the Debt Securities, enter into a supplemental Indenture to (i) in accordance with clause (k) thereof, establish the form or terms of Debt Securities of any series as
permitted by Sections 2.01 and 2.03 of the Base Indenture or (ii) in accordance with clause (i) thereof, add to, change, or eliminate any of the provisions of the Base Indenture in respect of a series of Debt Securities so long as any such
addition, change or elimination not otherwise permitted under Section 9.01 of the Base Indenture shall become effective only when there is no Debt Security of any series Outstanding; and 
 WHEREAS, the Company has duly authorized the issue of 5.00% Convertible Senior Notes due 2028 (as they may be issued from time to time under this
Supplemental Indenture, including any Additional Notes issued pursuant to Section 2.05 of the Base Indenture and Section 1.03 of this Supplemental Indenture, the “Notes”), initially in an aggregate principal amount not to
exceed $172,500,000, and in connection therewith, there being no Notes Outstanding at the time of execution and delivery of this Supplemental Indenture, the Company has duly determined to make, execute and deliver this Supplemental Indenture to set
forth the terms and provisions of the Notes as required by the Base Indenture and to add to, change and eliminate certain provisions of the Base Indenture in respect of the Notes; and 
 WHEREAS, the Company has determined that this Supplemental Indenture is authorized or permitted by Section 9.01 of the Base Indenture and has
delivered to the Trustee an Opinion of Counsel and Officers’ Certificate to the effect that all conditions precedent provided for in the Base Indenture to the execution and delivery of this Supplemental Indenture have been complied with; and

 WHEREAS, the Form of Note, the Trustee’s Certificate of Authentication to be borne by each Note, the Form of Notice of
Conversion, the Form of Fundamental Change Repurchase Notice, the Form of Repurchase Notice and the Form of Assignment and Transfer to be borne by the Notes are to be substantially in the forms hereinafter provided for; and 
 WHEREAS, all things necessary to make the Notes, when executed by the Company and authenticated and delivered by the Trustee or a duly authorized
authenticating agent, as in the Base Indenture provided, the valid and legally binding obligations of the Company have been done; and 

 WHEREAS, all things necessary to make this Supplemental Indenture a valid and legally binding
agreement according to its terms, and a valid and legally binding amendment of, and supplement to, the Base Indenture, have been done. 
 NOW, THEREFORE, in consideration of the mutual agreements and covenants set forth herein, the parties hereto agree, subject to the terms and conditions hereinafter set forth, as follows for the benefit of the Trustee and the
Noteholders: 
 ARTICLE 1 
 ISSUE AND DESCRIPTION OF NOTES 
 Section 1.01 Designation and Amount; Ranking Payments; Denomination. The Notes
shall be designated as the “5.00% Convertible Senior Notes due 2028.” The Notes are hereby established as a series of Debt Securities under the Base Indenture. The aggregate principal amount of Notes that may be authenticated and delivered
under this Supplemental Indenture is not limited. The aggregate principal amount of Notes initially authorized for authentication and delivery pursuant to this Supplemental Indenture (the “Initial Notes”) is limited to $172,500,000
(except for Notes authenticated and delivered upon registration or transfer of, or in exchange for, or in lieu of other Notes pursuant to Section 3.06(b), Section 3.11, Section 8.05, Section 9.03(d) hereof and Section 2.09,
Section 2.11 and Section 2.16(c) of the Base Indenture). The Company may, and shall be entitled to, from time to time, without notice to or the consent of the Holders of the Notes, in accordance with Section 1.03 below increase the
principal amount of Notes and issue such increased principal amount (or any portion thereof) of Notes as “Additional Notes” under this Supplemental Indenture; provided that no such additional notes may be issued unless
fungible with the Initial Notes for U.S. federal income tax purposes, in which case any Additional Notes so issued will have the same form and terms (other than the date of issuance, issue price, and, under certain circumstances, the date from which
interest thereon will begin to accrue, first interest payment date and legends, if any, thereon) as the Notes previously issued. 
 Payments
of the principal of and interest on the Notes shall be made in Dollars, and the Notes shall be denominated in Dollars and in amounts equal to either $1,000 or an integral multiple thereof or no Dollars. The Place of Payment where the principal of
and any other payments due on the Notes are payable shall initially be at the office or agency of the Company maintained for that purpose in New York, New York in accordance with Section 4.02 of this Supplemental Indenture.

 Initially, Deutsche Bank Trust Company Americas will act as Paying Agent, Registrar and Conversion Agent. The Company may appoint and
change any Paying Agent, Registrar or co-registrar or Conversion Agent without notice. The Company or any of its domestically organized Wholly Owned Subsidiaries may act as Paying Agent or Registrar or co-registrar. 
 The Company shall pay interest (a) on any Notes in certificated form by check mailed to the address of the Person entitled thereto as it appears in
the Debt Security Registrar (or upon written application by such Person to the Trustee and Paying Agent (if different from the Trustee) not later than the relevant Record Date, by wire transfer in immediately available funds to such Person’s
account within the United States, if such Person is entitled to interest on an aggregate principal in excess of $1,000,000, which application shall remain in effect until the Noteholder notifies the Trustee and Paying Agent to the contrary) or
(b) on any Global Note by wire transfer of immediately available funds to the account of the Depositary or its nominee. 
  

 -2- 

 Section 1.02 Form of Notes. The Notes shall be substantially in the form set forth in
Exhibit A hereto, which is incorporated in and made a part of this Supplemental Indenture. 
 Any of the Notes may have such
letters, numbers or other marks of identification and such notations, legends or endorsements as the officers executing the same may approve (execution thereof to be conclusive evidence of such approval) and as are not inconsistent with the
provisions of this Supplemental Indenture or the Base Indenture or as may be required to comply with any law or with any rule or regulation made pursuant thereto or with any rule or regulation of any securities exchange or automated quotation system
on which the Notes may be listed or designated for issuance, or to conform to usage or to indicate any special limitations or restrictions to which any particular Notes are subject. 
 The terms and provisions contained in the form of Note attached as Exhibit A hereto shall constitute, and are hereby expressly made, a part
of this Supplemental Indenture and, to the extent applicable, the Company and the Trustee, by their execution and delivery of this Supplemental Indenture, expressly agree to such terms and provisions and to be bound thereby. 
 Section 1.03 Additional Notes. 
 (a) With respect to any Additional Notes, there shall be (a) established in or pursuant to a Board Resolution and (b) (i) set forth or determined in the manner provided in an Officers’ Certificate or
(ii) established in one or more indentures supplemental to this Supplemental Indenture, prior to the issuance of such Additional Notes: 
 (i) the aggregate principal amount of such Additional Notes to be authenticated and delivered pursuant to this Supplemental Indenture; 
 (ii) the issue price and the issue date of such Additional Notes, including the date from which interest shall accrue and the first
interest payment date therefor; and 
 (iii) if applicable, that such Additional Notes shall be issuable in whole or in part
in the form of one or more Global Securities and, in such case, the respective depositaries for such Global Securities, the form of any legend or legends which shall be borne by such Global Securities in addition to or in lieu of those set forth in
Exhibit A hereto and any circumstances in addition to or in lieu of those set forth in Exhibit A in which any such Global Securities may be exchanged in whole or in part for Additional Notes registered, or any transfer of such Global
Security in whole or in part may be registered, in the name or names of Persons other than the depositary for such Global Security or a nominee thereof. 
 (b) If any of the terms of any Additional Notes are established by action taken pursuant to a Board Resolution, a copy thereof shall be delivered to the Trustee at or prior to the delivery of the Officers’
Certificate or the indenture supplemental to this Supplemental Indenture setting forth the terms of the Additional Notes. 
 (c) The Initial
Notes and any Additional Notes shall be considered collectively as a single class for all purposes of the Indenture. Holders of the Initial Notes and any Additional Notes will vote and consent together on all matters to which such Holders are
entitled to vote or consent as one class, and none of the Holders of the Initial Notes or any Additional Notes shall have the right to vote or consent as a separate class on any matter to which such Holders are entitled to vote or consent.

  

 -3- 

 Section 1.04 Execution and Authentication. 
 (a) The Initial Notes may forthwith be executed by the Company and delivered to the Trustee for authentication and delivery by the Trustee for original
issue in accordance with the provisions of Section 2.07 of the Base Indenture. 
 (b) At any time and from time to time after the
issuance of the Initial Notes, the Trustee shall authenticate and deliver any Additional Notes for original issue in accordance with the provisions of Section 2.07 of the Base Indenture in an aggregate principal amount determined at the time of
issuance and specified in a Company Order. Such Company Order shall specify the principal amount of the Additional Notes to be authenticated and the date on which the original issue of such Additional Notes is to be authenticated. 
 Section 1.05 Non-Business Day Payments. If any Interest Payment Date, the Stated Maturity, any Redemption Date, any Purchase Date or any
Fundamental Change Purchase Date falls on a day that is not a Business Day, then the required payment or delivery will be made on the next succeeding Business Day with the same force and effect as if made on the date that the payment or delivery was
due, and no additional interest will accrue on that required payment or delivery for the period from and after the Interest Payment Date, Stated Maturity, Redemption Date, Purchase Date or Fundamental Change Purchase Date, as the case may be, to
that next succeeding Business Day. 
 ARTICLE 2 
 DEFINITIONS AND INCORPORATION BY REFERENCE 
 All capitalized terms contained in this Supplemental
Indenture shall, except as specifically provided for herein and except as the context may otherwise require, have the meanings given to such terms in the Base Indenture. Unless the context otherwise requires, all references in this Supplemental
Indenture to Articles, Sections or Exhibits refer to Articles, or Sections of or Exhibits to this Supplemental Indenture. In the event of any inconsistency between the Base Indenture and this Supplemental Indenture, this Supplemental Indenture shall
govern. The rules of interpretation set forth in the Base Indenture shall be applied hereto as if set forth in full herein. Unless the context otherwise requires, the following terms shall have the following meanings: 
 Section 2.01 Definitions. 
 “Applicable Conversion Rate” means a rate equal to the number of shares of Common Stock determined by dividing $1,000 by the Base Conversion Price. The Applicable Conversion Rate as of the date of this Supplemental
Indenture shall be 15.0761. 
 “Base Conversion Price” means, in respect of each $1,000 principal amount of Notes, the
number equal to $1,000 divided by 15.0761 (approximately $66.33) per share of Common Stock, subject to adjustment as set forth in Section 9.06. 
 “Business Day” means any day other than (x) a Saturday, (y) a Sunday or (z) a day on which state or federally chartered banking institutions in New York, New York are not required to be
open. 
 “Capital Stock” means: 
 (1) with respect to any Person that is a corporation, any and all shares, interests, participations or other equivalents (however
designated and whether or not voting) of corporate stock, including any warrants, options or rights to acquire any of the foregoing and instruments convertible into any of the foregoing; 
  

 -4- 

 (2) with respect to any Person that is not a corporation, any and all partnership,
membership or other equity interests of such Person; and 
 (3) any other interest or participation that confers on a Person
the right to receive a share of the profits and losses of, or distributions of assets of, the issuing Person, 
 but excluding from all of the foregoing
clauses (1), (2) and (3) any debt securities convertible into Capital Stock, whether or not such debt securities include any right of participation with Capital Stock. 
 “Capitalized Lease Obligation” means, as to any Person, an obligation that is required to be classified and accounted for as a capital
lease for financial reporting purposes in accordance with GAAP, and the amount of Indebtedness represented by such obligation shall be the capitalized amount of such obligation determined in accordance with GAAP; and the stated maturity thereof
shall be the date of the last payment of rent or any other amount due under such lease prior to the first date upon which such lease may be terminated by the lessee without payment of a penalty. 
 “Cash Equivalents” means: 
 (1) marketable direct obligations issued by, or unconditionally guaranteed by, the United States Government or issued by any agency thereof and backed by the full faith and credit of the United States, in each case
maturing within one year from the date of acquisition thereof; 
 (2) marketable direct obligations issued by any state of the
United States of America or any political subdivision of any such state or any public instrumentality thereof maturing within one year from the date of acquisition thereof and, at the time of acquisition, having one of the three highest ratings
obtainable from either S&P or Moody’s; 
 (3) commercial paper maturing no more than one year from the date of
creation thereof and, at the time of acquisition, having one of the two highest ratings obtainable from Moody’s or S&P; 
 (4) certificates of deposit or bankers’ acceptances maturing within one year from the date of acquisition thereof or demand deposit accounts and Eurodollar time deposits and overnight bank deposits issued by any bank organized under
the laws of the United States of America or any state thereof or the District of Columbia or any United States branch of a foreign bank having at the date of acquisition thereof combined capital and surplus of not less than $100 million; 

(5) repurchase obligations with a term of not more than seven days for underlying securities of the types described in clause
(1) or (2) above entered into with any bank meeting the qualifications specified in clause (4) above; 
  

 -5- 

 (6) deposits in money market funds investing in instruments of the type specified in
clauses (1) through (5) above; and 
 (7) money market mutual or similar funds having assets in excess of $100
million. 
 “Certificated Securities” means securities that are in definitive, fully registered certificated form.

 A “Change in Control” will be deemed to have occurred if any of the following occurs: 
 (i) any “Person” or “Group,” other than any of the Permitted Holders, is or becomes the “beneficial owner,”
directly or indirectly, of shares of the Company’s Voting Stock representing 50% or more of the total voting power of all outstanding classes of the Company’s Voting Stock and (i) files a Schedule 13D or Schedule TO or any other
schedule, form or report under the Exchange Act disclosing such beneficial ownership or (ii) the Company otherwise becomes aware of any such Person or Group; 
 (ii) the Company consolidates with, or merges with or into, another Person or the Company sells, assigns, conveys, transfers, leases or
otherwise disposes of all or substantially all of the Company’s assets, or any Person consolidates with, or merges with or into, the Company, in any such event other than pursuant to a transaction in which the Persons that “beneficially
owned,” directly or indirectly, the shares of the Company’s Voting Stock immediately prior to such transaction “beneficially own,” directly or indirectly, shares of the Company’s Voting Stock representing at least a majority
of the total voting power of all outstanding classes of Voting Stock of the continuing or surviving or transferee Person (or any parent thereof) immediately after giving effect to such transaction; 
 (iii) a majority of the members of the Company’s Board of Directors are not Continuing Directors; or 
 (iv) the holders of the Company’s Capital Stock approve any plan or proposal for the liquidation or dissolution of the Company
(whether or not otherwise in compliance with this Supplemental Indenture and the Base Indenture). 
 For purposes of this Change in Control
definition: 
 (i) “Person” and “Group” have the meanings given to them for purposes of Sections 13(d) and
14(d) of the Exchange Act or any successor provisions, and the term “Group” includes any group acting for the purpose of acquiring, holding or disposing of securities within the meaning of Rule 13d-5(b)(1) under the Exchange Act, or any
successor provision; 
 (ii) a “beneficial owner” will be determined in accordance with Rule 13d-3 under the
Exchange Act, as in effect on the date of this Supplemental Indenture, except that the number of shares of the Company’s Voting Stock will be deemed to include, in addition to all outstanding shares of the Company’s Voting Stock and
unissued shares deemed to be held by the “Person” or “Group” or other Person with respect to which the Change in Control determination is being made, all unissued shares deemed to be held by all other Persons; 
  

 -6- 

 (iii) “Continuing Directors” means, as of any date of determination, any member
of the Company’s Board of Directors who was a member of such Board of Directors on the date of the original issuance of the Notes, or was recommended, nominated for election or elected to such Board of Directors with the approval of a majority
of the Continuing Directors who were members of such Board of Directors at the time of such recommendation, nomination or election, either by a specific vote or by approval of the proxy statement issued by the Company on behalf of the Company’s
Board of Directors in which such individual is named as a nominee for director, or by a Permitted Holder; 
 (iv)
“beneficially own” and “beneficially owned” have meanings correlative to that of beneficial owner; 
 (v)
“Permitted Holders” means the Equity Investor and Related Parties; 
 (vi) “Equity Investor” means Warburg
Pincus Private Equity VIII, L.P.; 
 (vii) “Related Party” means: 
 (1) any controlling stockholder, partner, member, 51% (or more) owned Subsidiary or immediate family member (in the case of an individual)
of the Equity Investor; or 
 (2) any trust, corporation, partnership, limited liability company or other Person (other than
any individual), the beneficiaries, stockholders, partners, members, owners or Persons beneficially holding (directly or through one or more Subsidiaries) a 51% or more controlling interest of which consist of the Equity Investor or such other
Persons referred to in the immediately preceding clause (1) or this clause (2); and 
 (viii) “unissued shares”
means shares of Voting Stock not outstanding that are subject to options, warrants, rights to purchase or conversion privileges exercisable within 60 days of the date of determination of a Change in Control. 
 “Closing Sale Price” of Common Stock on any date means the per share closing sale price (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 the average ask prices) at 4:00 p.m. (New York City time) on such date as reported in composite transactions for the principal
U.S. national or regional securities exchange on which Common Stock is traded or, if Common Stock is not listed on a U.S. national or regional securities exchange, as reported by the National Quotation Bureau Incorporated. 
 “Commission” means the Securities Exchange Commission. 
 “Common Stock” means the common stock of the Company, par value $0.001 per share, as it exists on the date of this Supplemental Indenture and any shares of any class or classes of Capital Stock of the
Company resulting from any reclassification or reclassifications thereof. 
 “Company” means the party named as such in this
Supplemental Indenture until a successor replaces it pursuant to the applicable provisions hereof and, thereafter, means the successor. 
  

 -7- 

 “Conversion Agent” means the office or agency in the Borough of Manhattan, the City and
State of New York where Notes may be presented for conversion and an office or agency where notices to or upon the Company in respect of the Notes and this Supplemental Indenture may be served, including any additional conversion agent, including
any named pursuant to 4.02. 
 “Conversion Settlement Averaging Period” with respect to any Notes to be converted means the
20 consecutive Trading Day period beginning (x) on the Trading Day on or next following the Redemption Date, if prior to the relevant Conversion Date the Company has called the Notes that are being converted for redemption, (y) for Notes
that are converted during the period beginning on the 30th Trading Day prior to the Stated Maturity, on the 27th Trading Day immediately preceding the Stated Maturity, and (z) in all other instances, on the Trading Day immediately following the
final day of the Conversion Retraction Period. 
 “Credit Facility” means, with respect to the Company or any Subsidiary,
one or more debt facilities or debt issuances or letters of credit or any successor or replacement agreement, in each case, as amended, restated, modified, renewed or refinanced in whole or in part from time to time. 
 “Crude Oil and Natural Gas Business” means: 
 (1) the acquisition, exploration, exploitation, development, operation, production, hedging, swapping and disposition of interests in oil,
natural gas and other hydrocarbon properties and assets; 
 (2) the gathering, marketing, treating, processing, storage,
refining, hedging, swapping, selling and transporting of any production from such interests, properties or assets (or interests, properties or assets of others) and products produced in association therewith; and 
 (3) activities arising from, relating to or necessary, appropriate, ancillary, complementary or incidental to the foregoing. 

“Current Market Price” means, with respect to any date of determination, the Closing Sale Price of Common Stock on the date of
determination. 
 “Daily Conversion Value” means, for each Trading
Day during the Conversion Settlement Averaging Period, for each $1,000 aggregate principal amount of Notes, one-twentieth ( 1/20th) of the product of (x) the then Applicable Conversion Rate and (y) the Volume Weighted Average Price on such Trading Day of the Common Stock. 
 “Daily Share Amount” for each Trading Day during the Conversion Settlement
Averaging Period for each $1,000 aggregate principal amount of Notes means one-twentieth ( 1/20th) of the Applicable
Conversion Rate on that Trading Day. 
 “Default” means an event or condition the occurrence of which is, or with the
lapse of time or the giving of notice or both would be, an Event of Default. 
 “Dollar-Denominated Production Payment”
means production payment obligations recorded as liabilities in accordance with GAAP, together with all undertakings and obligations in connection therewith. 
  

 -8- 

 “Ex-Dividend Date” means, when used with respect to any dividend or distribution, the
first date upon which the Common Stock trades, regular way, on the relevant exchange or in the relevant market from which the sale price was obtained without the right to receive such dividend or distribution. 
 “Fair Market Value” means, with respect to any asset or property, the price which would be paid in an arm’s-length, free market
transaction, for cash, between an informed and willing seller and an informed and willing buyer, neither of whom is under undue pressure or compulsion to complete the transaction, determined in good faith by the Company’s Board of Directors
(unless otherwise provided in this Supplemental Indenture), which determination will be conclusive for all purposes under this Supplemental Indenture. 
 “Fundamental Change” means the occurrence of a Change in Control or a Termination of Trading. 
 “GAAP” means generally accepted accounting principles in the United States of America as in effect from time to time, including those set forth in: 
 (1) the opinions and pronouncements of the Accounting Principles Board of the American Institute of Certified Public Accountants;

 (2) statements and pronouncements of the Financial Accounting Standards Board; 
 (3) such other statements by such other entity as approved by a significant segment of the accounting profession; and 
 (4) the rules and regulations of the Commission governing the inclusion of financial statements (including pro forma financial
statements) in periodic reports required to be filed pursuant to Section 13 of the Exchange Act, including opinions and pronouncements in staff accounting bulletins and similar written statements from the accounting staff of the Commission.

 “Global Note” means a permanent global note that is in the Form of Note attached hereto as Exhibit A, and
that is deposited with the Depositary or its custodian and registered in the name of the Depositary. 
 “Holder” or
“Holders” means a Person or Persons in whose name a Note is registered on the Registrar’s books. 
 “Indebtedness” means with respect to any Person, without duplication: 
 (1) the principal in
respect of (A) indebtedness of such Person for money borrowed and (B) indebtedness evidenced by notes, debentures, bonds or other similar instruments for the payment of which such Person is responsible or liable, including, in each case,
any premium on such indebtedness to the extent such premium has become due and payable; 
 (2) all Capitalized Lease
Obligations of such Person; 
  

 -9- 

 (3) all obligations of such Person representing the deferred purchase price of property,
all conditional sale obligations of such Person and all obligations under any title retention agreement (but excluding trade accounts payable), to the extent such obligations would appear as a liability upon the balance sheet of such Person in
accordance with GAAP; 
 (4) all obligations for the reimbursement of any obligor on any outstanding letter of credit,
banker’s acceptance or similar credit transaction (other than obligations with respect to letters of credit securing obligations (other than obligations described in clauses (1) through (3) above) entered into in the ordinary course
of business of such Person to the extent such letters of credit are not drawn upon or, if and to the extent drawn upon, such drawing is reimbursed no later than the tenth Business Day following payment on the letter of credit); 
 (5) guarantees and other contingent obligations in respect of Indebtedness referred to in this definition; 
 (6) all obligations of any other Person of the type referred to in clauses (1) through (5) above which are secured by any Lien
on any property or asset of such Person, the amount of such obligation being deemed to be the lesser of the Fair Market Value of such property or asset and the amount of the obligation so secured; and 
 (7) any guarantee by such Person of production or payment with respect to (A) a Production Payment or (B) Production Payments
and Reserve Sales; 
 provided, however, that any indebtedness which has been defeased in accordance with GAAP or defeased pursuant to the
deposit of Cash or Cash Equivalents (in an amount sufficient to satisfy all such indebtedness obligations at maturity or redemption, as applicable, and all payments of interest and premium, if any) in a trust or account created or pledged for the
sole benefit of the holders of such indebtedness, and subject to no other Liens, and the other applicable terms of the instrument governing such indebtedness, shall not constitute “Indebtedness.” 
 Notwithstanding the foregoing, (i) accrued expenses and trade accounts payable arising in the ordinary course of business shall not constitute
“Indebtedness” and (ii) except as expressly provided in clause (7) above, Production Payments and Reserve Sales shall not constitute “Indebtedness.” 
 Any obligation of a Person in respect of a farm-in agreement or similar arrangement whereby such Person agrees to pay all or a share of the drilling,
completion or other expenses of an exploratory or development well (which agreement may be subject to a maximum payment obligation, after which expenses are shared in accordance with the working or participation interest therein or in accordance
with the agreement of the parties) or perform the drilling, completion or other operation on such well in exchange for an ownership interest in an oil or gas property shall not constitute Indebtedness. 
 Notwithstanding the foregoing, in connection with the acquisition or disposition of any business, assets or Capital Stock of a Subsidiary or the Company,
“Indebtedness” will exclude any obligations arising from agreements of the Company or any of its Subsidiaries providing for indemnification, guarantees (other than guarantees of Indebtedness), adjustment of purchase price, holdbacks,
contingent payment obligations based on a final financial statement or performance of acquired or disposed of assets or similar obligations, in each case, incurred or assumed in connection with such acquisition or disposition. 
  

 -10- 

 The “amount” or “principal amount” of Indebtedness at any time of determination as
used herein shall, except as set forth below, be determined in accordance with GAAP: 
 (1) the “amount” or
“principal amount” of any Indebtedness issued at a price that is less than the principal amount at maturity thereof shall be the accreted value thereof; 
 (2) the “amount” or “principal amount” of any Capitalized Lease Obligation shall be the amount determined in
accordance with the definition thereof; 
 (3) the “amount” or “principal amount” of all other
unconditional obligations shall be the amount of the liability thereof determined in accordance with GAAP; and 
 (4) the
“amount” or “principal amount” of all other contingent obligations shall be the maximum liability at such date of such Person. 
 “Indenture” means the Base Indenture, as supplemented and modified by this Supplemental Indenture, as either may be amended or supplemented from time to time in accordance with the terms hereof, including the provisions of
the TIA that are deemed to be a part hereof. 
 “Issue Date” of any Note means the date on which the Note was originally
issued or deemed issued as set forth on the face of the Note. 
 “Lien” means any lien, mortgage, deed of trust, pledge,
security interest, charge or encumbrance of any kind (including any conditional sale or other title retention agreement, any lease in the nature thereof and any agreement to give any security interest). 
 “Market Disruption Event” means the occurrence or existence for more than one half hour period in the aggregate on any Trading Day for
shares of Common Stock of any suspension or limitation imposed on trading (by reason of movements in price exceeding limits permitted by The New York Stock Exchange (the “NYSE”) or otherwise) in shares of Common Stock or in any
options, contracts or future contracts relating to shares of Common Stock, and such suspension or limitation occurs or exists at any time before 1:00 p.m. (New York City time) on such day. 
 “Moody’s” means Moody’s Investors Service, Inc. 
 “National Securities Exchange” means a U.S. national securities exchange, including the New York Stock Exchange. 
 “Notes” has the meaning set forth in the third recital of this Supplemental Indenture and shall include the Initial Notes and any Additional Notes authenticated and delivered in accordance with
Section 1.03. 
 “Person” means an individual, partnership, corporation, unincorporated organization, limited liability
company, trust, estate, or joint venture, or a governmental agency or political subdivision thereof. 
 “Production
Payments” means, collectively, Dollar-Denominated Production Payments and Volumetric Production Payments. 
  

 -11- 

 “Production Payments and Reserve Sales” means the grant or transfer to any Person of a
Dollar-Denominated Production Payment, Volumetric Production Payment, royalty, overriding royalty, revenue interest, net revenue interest, reversionary interest, net profits interest, master limited or other partnership interest or other interest in
oil and natural gas properties, reserves or the right to receive all or a portion of the production or the proceeds from the sale of production attributable to such properties, including, without limitation, any such grants or transfers pursuant to
incentive compensation programs on terms that are reasonably customary in the Crude Oil and Natural Gas Business for geologists, geophysicists or other providers of technical services to the Company or a Subsidiary. 
 “Qualifying Fundamental Change” means any Change in Control included in clause (i) or (ii) of the definition of “Change
in Control” if (but only if) such Change in Control occurs prior to March 20, 2012. A merger, consolidation, assignment, conveyance, sale, transfer, lease or other disposition otherwise constituting a Change in Control will not constitute
a Qualifying Fundamental Change if at least 90% of the consideration paid for the Common Stock in that transaction, excluding Cash payments for fractional shares and Cash payments made pursuant to dissenters’ appraisal rights, consists of
shares of common stock traded on a U.S. national securities exchange, or will be so traded immediately following such transaction, and, as a result of such transaction, the Notes become convertible into such shares of such common stock. 

“Redemption Date” means the date specified in a notice of redemption on which the Notes may be redeemed in accordance with the terms
of the Notes and the Indenture. 
 “Secured Credit Facility” means a Credit Facility secured by one or more Liens on a
substantial portion of the Company’s assets. 
 “Settlement Amount” is the amount the Company shall deliver to the
Holder, through the Conversion Agent, pursuant to Section 9.02(b)(i), (ii) or (iii) hereof. 
 “Significant
Subsidiary” shall have the same meaning as such term is defined in Rule 1-02 of Regulation S-X. 
 “S&P” means
Standard and Poor’s Ratings Group. 
 “Stated Maturity” when used with respect to any Note, means March 15, 2028.

 “Subsidiary” means a Person more than 50% of the outstanding Voting Stock of which is owned, directly or indirectly, by
the Company or by one or more other Subsidiaries of the Company, or by the Company and one or more other Subsidiaries of the Company. 
 “Subsidiary Guarantor” means each of the Company’s Subsidiaries that in the future executes a supplemental indenture in which such Subsidiary agrees to be bound by the terms of this Supplemental Indenture as a
Subsidiary Guarantor; provided, however, that any Subsidiary Guarantor shall cease to constitute a Subsidiary Guarantor when its Subsidiary Guarantee is released in accordance with the terms of this Supplemental Indenture. 

“Termination of Trading” means that the Common Stock into which the Notes are then convertible ceases to be listed for trading on a
National Securities Exchange and is not then quoted on an established automated over-the-counter trading market in the United States. 
  

 -12- 

 “Trading Day” means a day on which (i) there is no Market Disruption Event and
(ii) the NYSE or, if the Common Stock is not listed on the NYSE, the principal other U.S. national or regional securities exchange on which the Common Stock is then listed is open for trading or, if the Common Stock is not so listed, any
Business Day. So long as the Common Stock is listed on a U.S. national or regional securities exchange, a “Trading Day” only includes those days that have a scheduled closing time of 4:00 p.m. (New York City time) or the then standard
closing time for regular trading on such exchange. 
 “Trading Price” means, on any date of determination, the quotient of
(x) the average of the secondary bid quotations per Note obtained by the Conversion Agent for $5,000,000 principal amount of the Notes at approximately 3:30 p.m. (New York City time) on such determination date from three independent nationally
recognized securities dealers the Company selects divided by (y) 5,000; provided that, if at least three such bids cannot reasonably be obtained, but two such bids can reasonably be obtained, then the average of these two bids shall be
used; provided further that, if at least two such bids cannot reasonably be obtained, but one such bid can reasonably be obtained, this one bid shall be used. If on any date of determination the Conversion Agent cannot reasonably obtain at
least one bid for $5,000,000 principal amount of the Notes from an independent nationally recognized securities dealer, then for purposes of determining whether the condition set forth in Section 9.01(a)(ii) is satisfied, the Trading Price of
the Notes on such date of determination will be deemed to be less than 98% of the Closing Sale Price of the Common Stock on such date multiplied by the then Applicable Conversion Rate. 
 “Uniform Commercial Code” means the New York Uniform Commercial Code as in effect from time to time. 
 “Volume Weighted Average Price” per share of Common Stock (or any security that is part of the Reference Property into which the Common
Stock has been converted, if applicable) on any Trading Day means the Volume Weighted Average Price on the principal exchange or over-the-counter market on which the Common Stock (or other security) is then listed or traded, from 9:30 a.m. to 4:00
p.m. (New York City time) on that Trading Day as displayed under the heading “Bloomberg VWAP” on Bloomberg Page BBG Equity AQR (or the Bloomberg Page for any security that is part of the Reference Property into which the Common Stock has
been converted, if applicable), or if such Volume Weighted Average Price is not available (or the Reference Property in question is not a security), the Company’s Board of Directors’ reasonable, good faith estimate of the Volume Weighted
Average Price of the shares of Common Stock, or other Reference Property, on such Trading Day. 
 “Volumetric Production
Payments” means production payment obligations recorded as deferred revenue in accordance with GAAP, together with all undertakings and obligations in connection therewith. 
 “Voting Stock” means any class or classes of Capital Stock or other interests then outstanding and normally entitled (without regard to
the occurrence of any contingency) to vote in the election of the Board of Directors, managers or trustees. 
 “Wholly Owned
Subsidiary” means, at any time, a Subsidiary all the Voting Stock of which (except directors’ qualifying shares and investments by foreign nationals mandated by applicable law) is at such time owned, directly or indirectly, by the
Company and its other Wholly Owned Subsidiaries. 
  

 -13- 

 Section 2.02 Other Definitions. 
  

			
	 Term Section
	  	 Defined in:

	“Additional Interest”	  	Section 10.02
	“Additional Shares”	  	Section 9.15
	“Cash”	  	Section 3.07(a)
	“Cash Settlement Notice Period”	  	Section 9.02(b)(i)
	“Company Notice”	  	Section 3.07(b)
	“Company Notice Date”	  	Section 3.07(b)
	“Conversion Date”	  	Section 9.03(a)(iv)
	“Conversion Notice”	  	Section 9.03(a)(i)
	“Conversion Retraction Period”	  	Section 9.02(b)(i)
	“Defaulted Interest”	  	Section 10.03
	“Dividend Adjustment Amount”	  	Section 9.06(g)
	“Effective Date”	  	Section 9.15(b)(i)
	“Event of Default”	  	Section 6.01
	“Expiration Date”	  	Section 9.06(e)
	“Expiration Time”	  	Section 9.06(e)
	“Final Notice Date”	  	Section 9.02(b)
	“Fundamental Change Notice”	  	Section 3.08(b)
	“Fundamental Change Notice Date”	  	Section 3.08(b)
	“Fundamental Change Purchase Date”	  	Section 3.08(a)
	“Fundamental Change Purchase Notice”	  	Section 3.08(c)
	“Fundamental Change Purchase Price”	  	Section 3.08(a)
	“Interest Payment Date”	  	Section 10.01(a)
	“Non-Surviving Transaction”	  	Section 9.10(a)
	“Purchase Date”	  	Section 3.07(a)
	“Purchase Notice”	  	Section 3.07(a)
	“Purchase Price”	  	Section 3.07(a)
	“Purchased Shares”	  	Section 9.06(e)
	“Record Date”	  	Section 10.01(a)
	“Redemption Price”	  	Section 3.01
	“Reference Property”	  	Section 9.10
	“Rights”	  	Section 9.06(i)
	“Special Record Date”	  	Section 10.03
	“Specified Cash Amount”	  	Section 9.02(b)(iv)(C)
	“Spin-Off”	  	Section 9.06(f)
	“Stock Price”	  	Section 9.15(b)(ii)
	“Subsidiary Guarantee”	  	Section 11.01
	“Transforming Transaction”	  	Section 9.01(a)(vi)
	“Trigger Event”	  	Section 9.06(j)
	“Triggering Distribution”	  	Section 9.06(d)

  

 -14- 

 ARTICLE 3 
 REDEMPTION AND PURCHASES 
 Article III of the Base Indenture shall not apply to the Notes except as,
and to the extent, described in this Article 3. 
 Section 3.01 Company’s Right to Redeem; Notices to Trustee. The Notes
will not be subject to redemption prior to March 26, 2012. On or after March 26, 2012, the Company shall have the right to redeem the Notes in whole or in part, for a Cash redemption price equal to 100% of the principal amount of the Notes
to be redeemed, plus any accrued and unpaid interest (including Additional Interest, if any) thereon up to, but not including, the Redemption Date (the “Redemption Price”). In case the Company shall desire to exercise such right of
redemption, the Company shall fix a date for redemption and give notice thereof to the Trustee. If the Redemption Date is between a regular Record Date and the Interest Payment Date to which it relates, the Company will pay any accrued and unpaid
interest (including Additional Interest, if any) to a Holder on such regular Record Date. If the Company calls any or all of the Notes for redemption, Holders may convert their Notes that have been so called for redemption at any time prior to 5:00
p.m. (New York City Time) on the second scheduled Trading Day prior to the Redemption Date, even if such Notes are not otherwise convertible at such time, after which such Holders’ right to convert will expire unless the Company defaults in the
payment of the Redemption Price. 
 The Company shall give each notice to the Trustee provided for in this Section 3.01 at least 60 days
before the Redemption Date unless the Trustee consents to a shorter period. 
 On and after the applicable redemption date, interest will
cease to accrue on Notes or portions thereof called for redemption as long as the Company has previously deposited with the Paying Agent for the Notes funds in satisfaction of the applicable Redemption Price pursuant to this Supplemental Indenture.

 Section 3.02 Selection of Notes to Be Redeemed. If fewer than all Outstanding Notes are to be redeemed, the Trustee shall
select the Notes to be redeemed by lot, on a pro rata basis or by another method that the Trustee considers fair and appropriate, including any method required by DTC or any successor Depositary. The Trustee shall make the selection from Outstanding
Notes not previously called for redemption. The Trustee may select for redemption portions of the principal amount of Notes that have denominations larger than $1,000. Notes and portions of Notes the Trustee selects shall be in principal amounts of
$1,000 or multiples thereof. Provisions of this Supplemental Indenture that apply to Notes called for redemption also apply to portions of Notes called for redemption. The Trustee shall notify the Company promptly of the Notes or portions of Notes
to be redeemed. 
 If the Trustee selects a portion of a Holder’s Notes for partial redemption and such Holder converts a portion of the
same Notes, the converted portion will be deemed first to be from the portion selected for redemption. 
 Section 3.03 Notice of
Redemption. At least 30, but not more than 60, calendar days before the Redemption Date, the Company or, at the Company’s request, the Trustee shall mail a notice of redemption by first-class mail, postage prepaid, to each Holder of Notes
to be redeemed. 
 The notice shall identify the Notes to be redeemed and shall state: 
 (a) the Redemption Date; 
  

 -15- 

 (b) the Redemption Price; 
 (c) the Applicable Conversion Rate; 
 (d) the name and address of the Paying Agent and the Conversion Agent; 
 (e) that Notes
called for redemption may be converted at any time prior to 5:00 p.m. (New York City time) on the second scheduled Trading Day prior to the Redemption Date; 
 (f) that Holders who want to convert their Notes must satisfy all the requirements set forth herein and in the Notes; 
 (g) that Notes called for redemption must be surrendered to the Paying Agent to collect the Redemption Price; 
 (h) if fewer than all of the outstanding Notes are to be redeemed, the certificate numbers, if any, and principal amounts of the
particular Notes to be redeemed; 
 (i) that, unless the Company defaults in making payment of such Redemption Price,
interest, if any (including Additional Interest, if any), on Notes called for redemption will cease to accrue on and after the Redemption Date; and 
 (j) the CUSIP number of the Notes. 
 At the Company’s request, the Trustee shall give the notice of
redemption in the Company’s name and at the Company’s expense, provided that the Company makes such request at least three Business Days prior to the date by which such notice of redemption must be given to Holders in accordance
with this Section 3.03, provided further that, in all cases, the text of such notice of redemption shall be prepared by the Company. 
 The notice if given in the manner herein provided shall be conclusively presumed to have been duly given, whether or not any Holder receives such notice. In any case, failure to give such notice or any defect in the notice to the Holder of
any Note selected for redemption as a whole or in part shall not affect the validity of the proceedings for the redemption of any other Note. 
 Section 3.04 Effect of Notice of Redemption. Once notice of redemption is given, Notes called for redemption become due and payable on the Redemption Date and at the Redemption Price stated in the notice of redemption except for
Notes which are converted in accordance with the terms of this Supplemental Indenture. If less than all the Notes are to be redeemed, the notice of redemption shall specify the CUSIP numbers of the Note to be redeemed. Upon surrender to the Paying
Agent, such Notes shall be paid at the Redemption Price stated in the notice of redemption. 
 Section 3.05 Deposit of Redemption
Price. Prior to 10:00 a.m. (New York City time) on the Redemption Date, the Company shall deposit with the Paying Agent (or if the Company or a Wholly Owned Subsidiary is the Paying Agent, shall segregate and hold in trust) money sufficient to
pay the Redemption Price of all Notes to be redeemed on that date other than Notes or portions of Notes called for redemption which have been delivered by the Company to the Trustee for cancellation or have been converted. The Paying Agent shall as
promptly as practicable return to the Company any money not required for that purpose because of conversion of Notes pursuant to Article 9. If such money is then held by the Company in trust and is not required for such purpose, it shall be
discharged from such trust. 
  

 -16- 

 Section 3.06 Notes Redeemed in Part. 
 (a) In the event of any redemption in part, the Company will not be required to register the transfer of or exchange any Note so selected for redemption,
in whole or in part, except the unredeemed portion of any Note being redeemed in part. 
 (b) Upon surrender of a Note that is redeemed in
part, the Company shall execute and the Trustee shall authenticate and deliver to the Holder a new Note in an authorized denomination equal in principal amount to the unredeemed portion of the Note surrendered, or in the case of a Global Note, the
Company shall instruct the Registrar to decrease such Global Note by the principal amount of the redeemed portion of the Note surrendered. 
 Section 3.07 Purchase of Notes by the Company at Option of the Holder. 
 (a) General. Notes (equal to $1,000 or
an integral multiple thereof) shall be purchased by the Company at the option of the Holder on March 20, 2012, March 20, 2015, March 20, 2018 or March 20, 2023 (each, a “Purchase Date”). All Notes purchased by
the Company will be paid for in U.S. legal tender (“Cash” or “Cash Equivalent”) equal to 100% of the principal amount to be purchased plus any accrued and unpaid interest (including Additional Interest, if any)
thereon up to, but not including, such Purchase Date (the “Purchase Price”). 
 No Notes may be purchased by the Company at
the option of Holders pursuant to this Section 3.07 if the principal amount of the Notes has been accelerated, and such acceleration has not been rescinded, on or prior to the Purchase Date. The Company shall be required to purchase any
Outstanding Notes upon delivery to the Paying Agent and the Company by the Holder of a written notice (or in the case of the Global Note, a notice delivered electronically or by other means in accordance with the Depositary’s customary
procedures) of purchase (a “Purchase Notice”) during the period beginning at any time from 9:00 a.m. (New York City time) on the date that is 20 Business Days prior to the relevant Purchase Date until 5:00 p.m. (New York City time)
on the second Business Day prior to such Purchase Date. If the Purchase Notice is given and withdrawn during such period, the Company will not be obligated to purchase the related Notes. The Purchase Notice electing the Company purchase the Notes
must state: 
 (i) if the Notes are Certificated Securities, the certificate number of the Note which the Holder will deliver
to be purchased or, if the Notes are not Certificated Securities, all information required to comply with all DTC procedures; 
 (ii) the portion of the principal amount of the Notes to be purchased, in multiples of $1,000 thereof; and 
 (iii)
that the Notes shall be purchased by the Company pursuant to the applicable terms of the Notes and Indenture. 
  

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 The delivery of such Note to the Paying Agent with the Purchase Notice (together with all necessary
endorsements and compliance by the Holder with all DTC procedures) at the offices of the Paying Agent shall be a condition to the receipt by the Holder of the Purchase Price therefor. 
 The Company shall purchase from the Holder thereof, pursuant to this Section 3.07, a portion of a Note, if the principal amount of such portion is
$1,000 or an integral multiple of $1,000. Provisions of this Supplemental Indenture that apply to the purchase of all of a Note also apply to the purchase of such portion of such Note. 
 A Holder shall either effect book-entry transfer or deliver the Notes, together with necessary endorsements, to the office of the Paying Agent after
delivery of the Purchase Notice to receive payment of the Purchase Price. A Holder shall receive payment promptly following the later of the Purchase Date or the time of book-entry transfer or the delivery of the Notes. If the Paying Agent holds
money sufficient to pay the Purchase Price of the Note on such Business Day following the Purchase Date, then the Notes will cease to be Outstanding and interest (including Additional Interest, if any) on such Note will cease to accrue (whether not
book-entry transfer of the Note is made or whether the Note is delivered to the Paying Agent), and all other rights of the Holder shall terminate (other than the right to receive the Purchase Price and previously accrued and unpaid interest and
Additional Interest, if any, upon delivery on transfer of the Notes). 
 The Company shall be responsible for making all determinations with
respect to the adequacy of all notices electing to require the Company to purchase Notes pursuant to this Section 3.07 and all notices withdrawing such elections pursuant to Section 3.09, and any such determination shall be binding on the
applicable Holder. 
 (b) Company Notice. On or before the 20th Business Day prior to each Purchase Date (the “Company Notice
Date”), the Company shall mail a notice to the Trustee, the Paying Agent, to all Holders of the Notes, and to beneficial owners as required by applicable law, setting forth the information specified in this Section 3.07(b) (the
“Company Notice”). 
 Each Company Notice shall include a form of Purchase Notice to be completed by a Holder and shall
state: 
 (i) the last date on which a Holder may exercise the purchase right; 
 (ii) the Purchase Price; 
 (iii) the name and address of the Paying Agent and the Conversion Agent; 
 (iv) the
Applicable Conversion Rate estimated as of a recent date, and to the extent known at the time of such Company Notice, the amount of accrued but unpaid interest (and Additional Interest, if any) that will be payable with respect to each $1,000
principal amount of the Notes on the Purchase Date; 
 (v) that Notes as to which a Purchase Notice has been given may be
converted if they are otherwise convertible only in accordance with Article 9 hereof and the applicable provisions of the Notes if the applicable Purchase Notice has been withdrawn in accordance with the terms of this Supplemental Indenture;

  

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 (vi) that Notes must be surrendered to the Paying Agent to collect payment; 

(vii) that the Purchase Price for any Note as to which a Purchase Notice has been given and not withdrawn will be paid on the Business
Day following the later of the Purchase Date or the time of book-entry transfer or the delivery of the Notes and the Holder’s satisfaction of all applicable conditions; 
 (viii) the procedures the Holder must follow to exercise its purchase rights under this Section 3.07 and a brief description of such
rights; 
 (ix) briefly, the conversion rights, if any, of the Notes; 
 (x) the procedures for withdrawing a Purchase Notice; 
 (xi) that, unless the Company defaults in making payment on Notes for which a Purchase Notice has been submitted, interest, if any
(including Additional Interest, if any), on such Notes will cease to accrue on and after the Purchase Date; and 
 (xii) the
CUSIP number of the Notes. 
 At the Company’s request, the Trustee shall give such Company Notice in the Company’s name and at the
Company’s expense, provided that the Company makes such request at least three Business Days prior to the date by which such Company Notice must be given to Holders in accordance with this Section 3.07; provided further that,
in all cases, the text of such Company Notice shall be prepared by the Company. 
 Simultaneously with providing such Company Notice, the
Company shall publish a notice containing the information contemplated by this Section 3.07(b) in a newspaper of general circulation in The City of New York or publish such information on the Company’s website or through such other public
medium as the Company may use at that time. 
 (c) Procedure upon Purchase. The Company shall deposit Cash in respect of Cash
repurchases under this Article 3 at the time and in the manner as provided in Section 3.10, sufficient to pay the aggregate Purchase Price of all Notes to be purchased pursuant to this Section 3.07. 
 Section 3.08 Purchase of Notes at Option of the Holder upon a Fundamental Change. 
 (a) If a Fundamental Change occurs, Notes shall be purchased by the Company at the option of the Holders, as of the date that is 30 Business Days after
the occurrence of the Fundamental Change (the “Fundamental Change Purchase Date”) at a purchase price equal to 100% of the principal amount of the Notes, together with any accrued and unpaid interest (including Additional Interest,
if any) to, but excluding, the Fundamental Change Purchase Date (the “Fundamental Change Purchase Price”), payable in Cash, subject to satisfaction by or on behalf of any Holder of the requirements set forth in Section 3.08(c).

 Notwithstanding anything to the contrary set forth in this Section 3.08, Holders will not have the right to require the Company to
purchase any Notes as a result of any transaction described in clause (i) or (ii) of the definition of “Change in Control,” and the Company will not be required to deliver a Fundamental Change Notice incidental thereto as a
result of any merger, consolidation, 

  

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assignment, conveyance, sale, transfer, lease or other disposition otherwise constituting a Change in Control in which at least 90% of the consideration paid
for the Common Stock, excluding Cash payments for fractional shares and Cash payments made pursuant to dissenters’ appraisal rights, consists of shares of Common Stock traded on a National Securities Exchange, or which will be so traded
immediately following such transaction, and, as a result of such transaction, the Notes become convertible into such shares of Common Stock. 
 If the Company desires the Trustee to give the Fundamental Change Notice required by Section 3.08(b), at least three Business Days before the Fundamental Change Notice Date, the Company shall deliver an Officers’ Certificate to
the Trustee specifying the information required by Section 3.08(b). 
 (b) Within ten Business Days after the occurrence of a
Fundamental Change, the Company (or the Trustee, as applicable) shall mail a written notice of the Fundamental Change (the “Fundamental Change Notice,” the date of such mailing, the “Fundamental Change Notice Date”)
by first-class mail to the Trustee and to each Holder. Simultaneously with providing such notice, the Company will publish a notice containing this information in a newspaper of general circulation in The City of New York or publish the information
on the Company’s website or through such other public medium as the Company may use at that time. The Fundamental Change Notice shall state: 
 (i) information about, and the terms and conditions of, the Fundamental Change, including the amount of Additional Shares that are deliverable, if any; 
 (ii) the date by which the Fundamental Change Purchase Notice pursuant to Section 3.08(c) must be given; 
 (iii) the Fundamental Change Purchase Date; 
 (iv) the Fundamental Change Purchase Price; 
 (v) the name and address of the Paying Agent
and the Conversion Agent; 
 (vi) the Applicable Conversion Rate estimated as of a recent date, and to the extent known at the
time of such Company Notice, the amount of accrued but unpaid interest (including Additional Interest, if any) that will be payable with respect to each $1,000 principal amount of the Notes on the Purchase Date; 
 (vii) that the Notes as to which a Fundamental Change Purchase Notice has been given may be converted if they are otherwise convertible
pursuant to Article 9 hereof only if the Fundamental Change Purchase Notice has been withdrawn in accordance with the terms of this Supplemental Indenture; 
 (viii) that the Notes must be surrendered to the Paying Agent to collect payment; 
 (ix) that
the Fundamental Change Purchase Price for any Note as to which a Fundamental Change Purchase Notice has been duly given and not withdrawn will be paid on the Business Day following the later of the Fundamental Change Purchase Date and the
Holder’s satisfaction of all applicable conditions; 
  

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 (x) the procedures the Holder must follow to exercise rights under this
Section 3.08; 
 (xi) the conversion rights, if any, of the Notes; 
 (xii) the procedures for withdrawing a Fundamental Change Purchase Notice; 
 (xiii) that, unless the Company defaults in making payment of such Fundamental Change Purchase Price, interest (including Additional
Interest, if any) on Notes surrendered for purchase by the Company will cease to accrue on and after the Fundamental Change Purchase Date; and 
 (xiv) the CUSIP number of the Notes. 
 At the Company’s request, the Trustee shall give such
Fundamental Change Notice in the Company’s name and at the Company’s expense, provided that the Company makes such request at least three Business Days prior to the date by which such Fundamental Change Notice must be given to
Holders in accordance with this Section 3.08; provided further that, in all cases, the text of such Fundamental Change Notice shall be prepared by the Company. 
 (c) A Holder may exercise its rights specified in Section 3.08(b) upon delivery of a written notice (which may be delivered by letter, overnight
courier, hand delivery, facsimile transmission or in any other manner reasonably acceptable to the Paying Agent and, in the case of the Global Note, may be delivered electronically or by other means in accordance with the Depositary’s customary
procedures) of the exercise of such rights (a “Fundamental Change Purchase Notice”) to any Paying Agent during the period between the Fundamental Change Purchase Notice and 5:00 p.m. (New York City time) on the second scheduled
Trading Day prior to the Fundamental Change Purchase Date, specifying: 
 (i) If the Notes are Certificated Securities, the
certificate number of the Note which the Holder will deliver to be purchased; if the Notes are not Certificated Securities, all information required to comply with all DTC procedures; 
 (ii) the principal amount of the Note, or portion thereof, which the Holder will deliver to be purchased, which portion must be $1,000 or
an integral multiple thereof; and 
 (iii) that such Note shall be purchased pursuant to the terms and conditions specified in
the applicable provisions of such Note and this Supplemental Indenture. 
 The delivery of such Note to the Paying Agent with the Fundamental
Change Purchase Notice (together with all necessary endorsements and compliance by the Holder with all DTC procedures) at the offices of the Paying Agent shall be a condition to the receipt by the Holder of the Fundamental Change Purchase Price
therefor. 
 The Company shall purchase from the Holder thereof, pursuant to this Section 3.08, a portion of a Note if the principal
amount of such portion is $1,000 or an integral multiple of $1,000. Provisions of this Supplemental Indenture that apply to the purchase of all of a Note also apply to the purchase of such portion of such Note. 
  

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 Any purchase by the Company contemplated pursuant to the provisions of this Section 3.08 shall be
consummated by the delivery of the consideration to be received by the Holder on the Business Day following the later of the Fundamental Change Purchase Date or the satisfaction of the foregoing conditions to such purchase to be fulfilled by the
Holder hereunder. If the Paying Agent holds money sufficient to pay the Fundamental Change Purchase Price of the Notes which Holders have elected to require the Company to purchase on such Business Day in accordance with the terms of this
Supplemental Indenture, then, from and including the Fundamental Change Purchase Date, those Notes will cease to be Outstanding and interest (including Additional Interest, if any) on the Notes will cease to accrue and all other rights of the
Holders shall terminate, other than the right to receive the Fundamental Change Purchase Price upon satisfaction of the foregoing conditions. 
 The Company shall be responsible for making all determinations with respect to the adequacy of all notices electing to require the Company to purchase Notes pursuant to this Section 3.08 and all notices withdrawing such elections
pursuant to Section 3.09, and any such determination shall be binding on the applicable Holder. 
 (d) The Company shall deposit Cash,
at the time and in the manner as provided in Section 3.10, sufficient to pay the aggregate Fundamental Change Purchase Price of all Notes to be purchased pursuant to this Section 3.08. Notwithstanding anything herein to the contrary, the
Company’s obligations pursuant to this Section 3.08 shall be satisfied if a third party makes an offer to repurchase Outstanding Notes after a Fundamental Change in the manner and at the times and otherwise in compliance in all material
respects with the requirements of this Section 3.08 and such third party purchases all Notes properly tendered and not withdrawn pursuant to the requirements of this Section 3.08. 
 Section 3.09 Effect of Purchase Notice or Fundamental Change Purchase Notice. Upon receipt by the Paying Agent of the Purchase Notice or
Fundamental Change Purchase Notice specified in Section 3.07(a) or Section 3.08(c), as applicable, the Holder of the Note in respect of which such Purchase Notice or Fundamental Change Purchase Notice, as the case may be, was given shall
(unless such Purchase Notice or Fundamental Change Purchase Notice, as the case may be, is withdrawn as specified in the following paragraph) thereafter be entitled to receive solely the Purchase Price or Fundamental Change Purchase Price, as the
case may be, with respect to such Note. Such Purchase Price or Fundamental Change Purchase Price shall be paid to such Holder, subject to receipt of funds by the Paying Agent, promptly following the later of (i) the Business Day following the
Purchase Date or the Fundamental Change Purchase Date, as the case may be, with respect to such Note (provided the conditions in Section 3.07(a)) or Section 3.08(c), as applicable, have been satisfied) and (ii) the time of
delivery of such Note to the Paying Agent by the Holder thereof in the manner required by Section 3.07(b) or Section 3.08(c), as applicable. Notes in respect of which a Purchase Notice or Fundamental Change Purchase Notice has been given
by the Holder thereof may not be converted pursuant to Article 9 hereof on or after the date of the delivery of such Purchase Notice or Fundamental Change Purchase Notice unless such Purchase Notice or Fundamental Change Purchase Notice has first
been validly withdrawn as specified in the following paragraph and the Holder is otherwise entitled to convert such Notes. 
 A Purchase
Notice may be withdrawn by means of a written notice of withdrawal delivered to the office of the Paying Agent in accordance with the Purchase Notice at any time prior to 5:00 p.m. (New York City time) on the Business Day prior to the Purchase Date,
and a Fundamental Change Purchase Notice may be withdrawn by means of a written notice of withdrawal delivered to the office of the Paying Agent prior to 5:00 p.m. (New York City time) on the second scheduled Trading Day prior to the Fundamental
Change Purchase Date. Such notice shall specify: 
 (a) if the Notes are Certificated Securities, the certificate number of
the withdrawn Note or, if the Notes are not Certificated Securities, all information required to comply with all DTC procedures; 
  

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 (b) the principal amount of the withdrawn Note; and 
 (c) the principal amount, if any, of such Note which remains subject to the original Purchase Notice or Fundamental Change Purchase
Notice, as the case may be, and which has been or will be delivered for purchase by the Company. 
 Section 3.10 Deposit of Purchase
Price or Fundamental Change Purchase Price. Prior to 10:00 a.m. (New York City time) on the Business Day following the Purchase Date or the Fundamental Change Purchase Date, as the case may be, and the Holder’s satisfaction of all
applicable conditions specified in Section 3.07 or Section 3.08, as applicable, the Company shall deposit with the Trustee or with the Paying Agent (or, if the Company or a Subsidiary or an Affiliate of either of them is acting as the
Paying Agent, shall segregate and hold in trust as provided in Section 4.04 of the Base Indenture) an amount of Cash (in immediately available funds if deposited on such Business Day) sufficient to pay the aggregate Purchase Price or
Fundamental Change Purchase Price, as the case may be, of all the Notes or portions thereof which are to be purchased in respect of such Purchase Date or Fundamental Change Purchase Date, as the case may be. 
 Section 3.11 Notes Purchased in Part. Any Certificated Security which is to be purchased only in part shall be surrendered at the office of
the Paying Agent (with, if the Company or the Trustee so requires, due endorsement by, or a written instrument of transfer in form satisfactory to the Company and the Trustee duly executed by, the Holder thereof or such Holder’s attorney duly
authorized in writing) and the Company shall execute and the Trustee shall authenticate and deliver to the Holder of such Note, without service charge, a new Note or Notes, of any authorized denomination as requested by such Holder in aggregate
principal amount equal to, and in exchange for, the portion of the principal amount of the Note so surrendered which is not purchased, or in the case of a Global Note, the Company shall instruct the Registrar to decrease such Global Note by the
principal amount of the purchased portion of the Note surrendered. 
 Section 3.12 Covenant to Comply with Securities Laws upon
Purchase of Notes. When complying with the provisions of Section 3.07 or Section 3.08 hereof (provided that such offer to purchase constitutes an “issuer tender offer” for purposes of Rule 13e-4 (which term, as
used herein, includes any successor provision thereto) under the Exchange Act at the time of such offer to purchase), the Company shall (a) comply with Rule 13e-4 and Rule 14e-1 (or any successor provision) under the Exchange Act and
comply with any other tender offer rules under the Exchange Act, in each case to the extent applicable to the Company, (b) file the related Schedule TO (or any successor schedule, form or report) under the Exchange Act, and (c) otherwise
comply with any applicable federal and state securities laws to the extent applicable to the Company so as to permit the rights and obligations under Section 3.07 or Section 3.08, as the case may be, to be exercised in the time and in the
manner specified in Section 3.07 or Section 3.08, as the case may be. 
 Section 3.13 Repayment to the Company. Subject
to any applicable abandoned property law, the Trustee and the Paying Agent shall return to the Company any Cash held by the Trustee or the Paying Agent, as applicable, for the payment of the Purchase Price or 

  

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Fundamental Change Purchase Price, as the case may be, that remains unclaimed by the Holders for a period of two years; provided, however, that
to the extent that the aggregate amount of Cash deposited by the Company pursuant to Section 3.10 exceeds the aggregate Purchase Price or Fundamental Change Purchase Price, as the case may be, of the Notes or portions thereof which the Company
is obligated to purchase as of the Business Day following the Purchase Date or Fundamental Change Purchase Date, as the case may be, then, unless otherwise agreed in writing with the Company, promptly after the Business Day following the Purchase
Date or Fundamental Change Purchase Date, as the case may be, the Trustee shall return any such excess to the Company. 
 Section 3.14
No Fundamental Change Purchase Following Acceleration. No Notes will be purchased by the Company under Section 3.08 if the principal amount of the Notes has been accelerated under this Supplemental Indenture, and such acceleration has
not be rescinded, on or prior to the Fundamental Change Purchase Date. 
 Section 3.15 No Limit on Other Purchases. Nothing in
this Supplemental Indenture or the Base Indenture or the Notes shall prohibit or limit the right of the Company from time to time to repurchase the Notes at any price in open market purchases or negotiated transactions or by tender offer without any
notice to Holders. Any Notes purchased by the Company may, to the extent permitted by law, be reissued or resold or may, at the Company’s option, be surrendered to the Trustee for cancellation. Any Notes surrendered for cancellation may not be
reissued or resold and will be promptly cancelled. 
 ARTICLE 4 
 COVENANTS 
 In addition to the covenants set forth in Section 4.03, Section 4.04,
Section 4.06(a), Section 4.06(c), and Section 4.07 of the Base Indenture, the following covenants shall apply to the Notes. Section 4.01, Section 4.02, Section 4.05, 4.06(b), Section 4.08, Section 4.09,
Section 4.10, Section 4.11 and Section 4.12 of the Base Indenture shall not apply to, and the covenants therein shall be deemed included in the Indenture solely for the benefit of a different series of Debt Securities than, the Notes.

 Section 4.01 Payments. The Company shall promptly make all payments in respect of the Notes on the dates and in the manner
provided in the Notes or pursuant to this Supplemental Indenture. Any amounts of Cash or Common Stock to be given to the Trustee or Paying Agent shall be deposited with the Trustee or Paying Agent by 10:00 a.m. (New York City time) by the Company on
the required date. The Company shall make payments in respect of Certificated Securities by check mailed to a Holder’s registered address (unless otherwise agreed with the Holder thereof) and shall make payments in respect of the Global Note by
wire transfer. Subject to the applicable provisions of Section 3.01, Section 3.07 and Section 3.08, the Company shall make any required interest payments (including payments of Additional Interest, if any) to the Person in whose name
each Note is registered 5:00 p.m. (New York City time) on the Record Date for such interest payment (including payments of Additional Interest, if any). Principal amount, accrued interest, if any (including Additional Interest, if any), Redemption
Price, Purchase Price and Fundamental Change Purchase Price shall be considered paid on the applicable date due if on such date (in the case of a Purchase Price or Fundamental Change Purchase Price, on the Business Day following the later of the
applicable Purchase Date or Fundamental Change Purchase Date, as the case may be, the Trustee or the Paying Agent holds, in accordance with this Supplemental Indenture, Cash sufficient to pay all such amounts then due. 
  

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 Section 4.02 Maintenance of Office or Agency. The Company will maintain in The New York City
an office or agency of the Trustee, Registrar, Paying Agent and Conversion Agent where Notes may be presented or surrendered for payment, where Notes may be surrendered for registration of transfer, exchange, purchase, redemption or conversion and
where notices and demands to or upon the Company in respect of the Notes and this Supplemental Indenture may be served. The office of Deutsche Bank Trust Company Americas, Trust & Securities Services, 60 Wall Street, NYC MS 60-2710, New
York, NY 10005, Attention: Trust and Securities Services, Telecopier No.: (732) 578-4635, shall initially be such office or agency for all of the aforesaid purposes. The Company shall give prompt written notice to the Trustee of the location,
and of any change in the location, of any 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 Trustee with any such address thereof, such presentations, surrenders,
notices and demands may be made or served at the address of the Trustee set forth in Section 4.02 of the Base Indenture. 
 The Company
may also from time to time designate one or more other offices or agencies where the Notes may be presented or surrendered for any or all such purposes and may from time to time rescind such designations; provided, however, that no
such designation or rescission shall in any manner relieve the Company of its obligation to maintain an office or agency in New York City for such purposes. 
 Section 4.03 Commission and Other Reports. The Company shall deliver to the Trustee and the Holders, within 30 calendar days after the Company would have been required to file them with the Commission,
copies of the Company’s annual reports and the information, documents and other reports (or copies of such portions of any of the foregoing as the Commission may by rules and regulations prescribe) which the Company is required to file with the
Commission pursuant to Section 13 or 15(d) of the Exchange Act. In the event the Company is at any time no longer subject to the reporting requirements of Section 13 or 15(d) of the Exchange Act, the Company shall, so long as any Notes are
outstanding, file with the Commission for public availability (unless the Commission will not accept such a filing, in which case the Company will, or will cause the Trustee to, furnish the Holders of Notes (upon request)) all quarterly and annual
financial information that would be required to be contained in a filing with the Commission on Forms 10-Q and 10-K if the Company were required to file such Forms, including a “Management’s Discussion and Analysis of Financial Condition
and Results of Operations” that describes the financial condition and results of operations of the Company and its consolidated Subsidiaries and, with respect to the annual information only, a report thereon by the Company’s certified
independent accountants. 
 In such event, such reports, information and documents shall be provided within 30 calendar days after the date
on which the Company would have been required to file such reports had the Company continued to have been subject to such reporting requirements. The Company also shall comply with the other provisions of Section 314(a) of the Trust Indenture
Act. 
 Section 4.04 Existence. Except as permitted by Section 5.01 of this Supplement Indenture, the Company will do or
cause to be done all things necessary to preserve and keep in full force and effect its and any Subsidiary Guarantor’s corporate existence. 
  

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 ARTICLE 5 
 SUCCESSOR CORPORATION 
 Article X of the Base Indenture shall not apply to the Notes except as, and
to the extent, described in this Article 5. 
 Section 5.01 When Company May Merge or Transfer Assets. The Company shall not
consolidate with or merge into any Person in a transaction in which the Company is not the surviving Person, nor shall the Company convey, transfer, sell or lease or otherwise dispose of all or substantially all of the Company’s assets or
properties to any successor Person unless: 
 (a) the successor Person, if any, is a corporation organized and existing under
the laws of the United States, any state of the United States or the District of Columbia and such corporation has assumed by a supplemental indenture, executed and delivered to the Trustee, in form reasonably satisfactory to the Trustee, all of the
Company’s obligations under the Notes, the Base Indenture (as it relates to the Notes) and this Supplemental Indenture; 
 (b) to the extent such transaction constitutes a transaction to which Section 9.10(a) of this Supplemental Indenture applies, the supplemental indenture required by Section 9.10(a) shall have been duly executed and delivered in
accordance with Section 9.10(a); 
 (c) immediately after giving effect to such transaction, no Default or Event of
Default shall have occurred and be continuing; and 
 (d) the Company shall have delivered to the Trustee an Officers’
Certificate and an Opinion of Counsel, each stating that such consolidation, merger, conveyance, transfer, sale or lease and, if a supplemental indenture is required in connection with such transaction, such supplemental indenture comply with this
Article 5 and that all conditions precedent herein provided for relating to such transaction have been satisfied. 
 The successor Person
formed by such consolidation or into which the Company is merged or the successor Person to which such conveyance, transfer, sale or lease or disposition of all or substantially all of the Company’s assets or property is made shall succeed to,
and be substituted for, and may exercise every right and power of, the Company under the Base Indenture (as it relates to the Notes) and this Supplemental Indenture with the same effect as if such successor Person had been named as the Company; and
thereafter the Company shall be discharged from all obligations and covenants under the Base Indenture (as it relates to the Notes), this Supplemental Indenture and the Notes. 
 ARTICLE 6 
 DEFAULTS AND REMEDIES 
 Article VI of the Base Indenture shall not apply to the Notes, except as, and to the extent, described in this Article 6. 
 Section 6.01 Events of Default. Each of the following events shall constitute an “Event of Default” with respect to the
Notes: 
 (i) the Company fails to pay the principal of any Note when due; 
  

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 (ii) the Company fails to pay the Cash, shares of Common Stock or a combination thereof
owing upon conversion of any Note (including any Additional Shares) within the time periods set forth in Article 9 and such failure continues for a period of 5 days; 
 (iii) the Company fails to pay the Purchase Price or Redemption Price of any Note when the same becomes due and payable pursuant to
Article 3 hereof; 
 (iv) the Company fails to provide a timely notice of a Fundamental Change as required by
Section 3.08(b); 
 (v) the Company fails to perform any other covenant required of the Company in the Indenture
(including any provision of the TIA that imposes any duty on the Company or any Subsidiary Guarantor that is deemed part of the Indenture pursuant to Section 318(c) of the TIA, but excluding any covenant included in the Indenture solely for the
benefit of a different series of Debt Securities) if such failure continues for 90 days after notice of a default from the Trustee or after receipt by the Company and the Trustee of a notice of default from the Holders of at least 25% in principal
amount of the Outstanding Notes; 
 (vi) the Company or any of the Company’s Significant Subsidiaries fails to pay one or
more judgments for the payment of money in an aggregate amount in excess of $50.0 million (unless covered by insurance by a reputable insurer as to which the insurer has not disclaimed coverage) and such judgment(s) remain undischarged, unpaid or
unstayed for a period of 60 days after such judgment or judgments become final and non-appealable; 
 (vii) the Company
defaults in any payment of interest amounts (including Additional Interest) on any Note, when due if such failure continues for a period of 30 days; 
 (viii) any Indebtedness for money borrowed by the Company or one of the Company’s Significant Subsidiaries in an outstanding principal amount in excess of $50.0 million is not paid at final maturity as such final
maturity may be extended by waiver or amendment or is accelerated and such Indebtedness is not discharged, or such default in payment or acceleration is not cured or rescinded, within 30 days after written notice as provided in Section 12.03 of
the Base Indenture; and 
 (ix) the Company or any of its Significant Subsidiaries pursuant to or within the meaning of any
Bankruptcy Law: 
 (A) commences a voluntary case; 
 (B) consents to the entry of an order for relief against it in an involuntary case; 
 (C) consents to the appointment of a Custodian of it or for any substantial part of its property; or 
 (D) makes a general assignment for the benefit of its creditors or takes any comparable action under any foreign laws relating to
insolvency; and 
  

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 (x) a court of competent jurisdiction enters an order or decree under any Bankruptcy Law
that: 
 (A) is for relief against the Company or any of its Significant Subsidiaries in an involuntary case; 
 (B) appoints a Custodian of the Company or any of its Significant Subsidiaries or for any substantial part of its property; 
 (C) orders the winding up or liquidation of the Company or any of its Significant Subsidiaries (as such term is defined in Rule 1-02 of
Regulation S-X); or 
 (D) grants any similar relief under any foreign laws and in each such case the order or decree remains
unstayed and in effect for 60 days. 
 The foregoing will constitute Events of Default whatever the reason for any such Event of Default and
whether it is voluntary or involuntary or is effected by operation of law or pursuant to any judgment, decree or order of any court or any order, rule or regulation of any administrative or governmental body. 
 The Company shall deliver to the Trustee, as promptly as reasonably practicable and in any event within 30 days after an Officer of the Company has
knowledge of the occurrence thereof, written notice in the form of an Officers’ Certificate of any Event of Default and any Default. 
 Any reference in this Article 6 or elsewhere in this Supplemental Indenture to “Event of Default” shall be deemed to refer to and include only the Events of Default with respect to the Notes specified in this Section 6.01,
and the term “Default” as so used in this Supplemental Indenture shall have a correlative meaning. 
 Section 6.02
Acceleration. 
 (a) If an Event of Default (other than an Event of Default specified in Section 6.01(ix) or Section 6.01(x),
in either case with respect to the Company) occurs and is continuing, the Trustee by notice to the Company, or the Holders of at least 25% in aggregate principal amount of the Notes then Outstanding by notice to the Company and the Trustee, may
declare the principal amount of Notes Outstanding to be immediately due and payable. Upon such a declaration, such accelerated amount shall be due and payable immediately. If an Event of Default specified in Section 6.01(ix) or
Section 6.01(x), in either case with respect to the Company, occurs and is continuing, the principal amount of all the Notes shall, automatically and without any action by the Trustee or any Holder, become and be immediately due and payable
without any declaration or other act on the part of the Trustee or any Holders. The Holders of a majority in aggregate principal amount of the Notes at the time Outstanding by notice to the Trustee and the Company and without notice to any other
Holder may rescind any declaration of acceleration if the rescission would not conflict with any judgment or decree and if all existing Events of Default have been cured or waived, except nonpayment of the principal amount, that have become due
solely as a result of acceleration. No such rescission shall affect any subsequent Default or impair any right consequent thereto. 
 (b)
Notwithstanding the foregoing, the sole remedy under this Supplemental Indenture for an Event of Default relating to the failure of the Company to comply with Section 4.03 for the 180 days after the occurrence of such an Event of Default shall
consist 

  

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exclusively of the right to receive Additional Interest in accordance with Section 10.02 to, but not including, the 181st day thereafter (or, if
applicable, the earlier date on which the Event of Default relating to the reporting obligations is cured or waived) as provided in Section 10.02. If the Event of Default is continuing on the 181st day after an Event of Default relating to a
failure to comply with Section 4.03 occurs, the Notes will be subject to acceleration as provided above. For the avoidance of doubt, the provisions of this Section 6.02(b) will not affect the rights of Noteholders in the event of the
occurrence of any other Event of Default. 
 Section 6.03 Other Remedies. If an Event of Default occurs and is continuing, the
Trustee may pursue any available remedy to collect the payment of the principal amount plus accrued and unpaid interest, if any (including Additional Interest, if any), on the Notes or to enforce the performance of any provision of the Notes, the
Base Indenture (as it relates to the Notes) or this Supplemental Indenture. 
 The Trustee may maintain a proceeding even if it does not
possess any of the Notes or does not produce any of the Notes in the proceeding. A delay or omission by the Trustee or any Holder in exercising any right or remedy accruing upon an Event of Default shall not impair the right or remedy or constitute
a waiver of or acquiescence in the Event of Default. No remedy is exclusive of any other remedy. All available remedies are cumulative. 
 Section 6.04 Waiver of Past Defaults. Subject to Section 6.02 and Section 8.02 hereof, the Holders of a majority in aggregate principal amount of the Notes at the time Outstanding by notice to the Trustee and without
notice to any other Holder may waive any past Default and its consequences except (a) an Event of Default described in Section 6.01(i) and Section 6.01(vii), (b) a Default in respect of a covenant that under Section 8.02
cannot be amended without the consent of each Holder, or (c) a failure to pay Cash, shares of Common Stock or a combination thereof owing upon conversion of any Note (including any Additional Shares) within the time periods set forth in Article
9. When a Default is waived, it is deemed cured, but no such waiver shall extend to any subsequent or other Default or impair any consequent right. 
 Section 6.05 Control by Majority. The Holders of a majority in aggregate principal amount of the Notes at the time Outstanding may direct in writing the time, method and place of conducting any proceeding for any remedy
available to the Trustee or of exercising any trust or power conferred on the Trustee. However, the Trustee may refuse to follow any direction that conflicts with law, the Base Indenture (as it relates to the Notes) or this Supplemental Indenture
that the Trustee determines is unduly prejudicial to the rights of other Holders or would potentially involve the Trustee in personal liability. Prior to taking any action hereunder, the Trustee shall be entitled to indemnification satisfactory to
the Trustee in its reasonable discretion against all losses and expenses caused by taking or not taking such action. 
 Section 6.06
Limitation on Suits. Subject to Section 6.07, a Holder may not pursue any remedy with respect to the Base Indenture (as it relates to the Notes), this Supplemental Indenture or the Notes or for the appointment of a receiver or a trustee,
unless: 
 (a) such Holder shall have previously given to the Trustee written notice of a continuing Event of Default;

  

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 (b) the Holders of at least 25% in aggregate principal amount of the Notes at the time
Outstanding make a written request and shall have offered reasonable indemnity to the Trustee to institute such proceeding as Trustee; 
 (c) the Trustee has failed to institute such remedy within 60 days after such written notice, request and offer; and 
 (d) the Trustee has not received from the Holders of a majority in aggregate principal amount of the Notes then Outstanding a direction inconsistent with such request within 60 days after such written notice, request
and offer. 
 A Holder may not use this Supplemental Indenture to prejudice the rights of any other Holder or to obtain a preference or
priority over any other Holder. 
 Section 6.07 Rights of Holders to Receive Payment. Notwithstanding any other provision of this
Supplemental Indenture, the right of any Holder to receive payment of the principal amount, Redemption Price, Purchase Price, Fundamental Change Purchase Price or interest, if any (including Additional Interest, if any), in respect of the Notes held
by such Holder, on or after the respective due dates expressed in such Holder’s Notes or any Redemption Date, Purchase Date or Fundamental Change Purchase Date, and to convert the Notes in accordance with Article 9, or to bring suit for the
enforcement of any such payment on or after such respective dates or the right to convert, shall not be impaired or affected without the consent of such Holder. 
 Section 6.08 Collection Suit by Trustee. If an Event of Default specified in Section 6.01(i) or Section 6.01(vii) occurs and is continuing, the Trustee may recover judgment in its own name and as
Trustee of an express trust against the Company for the whole amount then due and owing (together with interest on any unpaid interest, including Additional Interest, to the extent lawful) and the amounts provided for in Section 7.06 of the
Base Indenture. 
 Section 6.09 Trustee May File Proofs of Claim. The Trustee may file such proofs of claim and other papers or
documents as may be necessary or advisable in order to have the claims of the Trustee and the Holders allowed in any judicial proceedings relative to the Company, a Subsidiary Guarantor, its creditors or its property and, unless prohibited by law or
applicable regulations, may vote on behalf of the Holders in any election of a Trustee in bankruptcy or other Person performing similar functions, and any Custodian in any such judicial proceeding is hereby authorized by each Holder to make payments
to the Trustee and, in the event that the Trustee shall consent to the making of such payments directly to the Holders, to pay to the Trustee any amount due it for the reasonable compensation, expenses, disbursements and advances of the Trustee, its
agents and its counsel, and any other amounts due the Trustee under Section 7.06 of the Base Indenture. 
 Section 6.10
Priorities. If the Trustee collects any money or property pursuant to this Article 6, it shall pay out the money or property in the following order: 
 FIRST: to the Trustee for amounts due under Section 7.06 of the Base Indenture; 
 SECOND: to Holders for amounts due and unpaid on the Notes for the principal amount, Redemption Price, Purchase Price, Fundamental Change Purchase Price or interest, if any (including Additional Interest, if any), as the case may be,
ratably, without preference or priority of any kind, according to such amounts due and payable on the Notes; and 
  

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 THIRD: the balance, if any, to the Company. 
 The Trustee may fix a record date and payment date for any payment to Holders pursuant to this Section 6.10. At least 15 days before such record
date, the Company shall mail to each Holder and the Trustee a notice that states the record date, the payment date and the amount to be paid. 
 Section 6.11 Undertaking for Costs. In any suit for the enforcement of any right or remedy under the Base Indenture or this Supplemental Indenture or in any suit against the Trustee for any action taken or omitted by it as
Trustee, a court in its discretion may require the filing by any party litigant in the suit of an undertaking to pay the costs of the suit, and the court in its discretion may assess reasonable costs, including reasonable attorneys’ fees and
expenses, against any party litigant in the suit, having due regard to the merits and good faith of the claims or defenses made by the party litigant. This Section 6.11 does not apply to a suit by the Trustee, a suit by a Holder pursuant to
Section 6.07 or a suit by Holders of more than 10% in aggregate principal amount of the Notes at the time Outstanding. 
 Section 6.12 Waiver of Stay or Extension Laws. The Company (to the extent it may lawfully do so) shall 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, that may affect the covenants or the performance of the Indenture; and the Company (to the extent that it may lawfully do so) hereby expressly waives all benefit or advantage of
any such law, and shall not hinder, delay or impede the execution of any power herein granted to the Trustee, but shall suffer and permit the execution of every such power as though no such law had been enacted. 
 ARTICLE 7 
 DISCHARGE OF INDENTURE 

 Article XI of the Base Indenture shall not apply to the Notes except as, and to the extent, described in this Article 7. 
 Section 7.01 Discharge of Liability on Notes. When (a) the Company delivers to the Trustee all Outstanding Notes (other than Notes
replaced pursuant to Section 2.11 of the Base Indenture) for cancellation or (b) all Outstanding Notes have become due and payable and the Company irrevocably deposits with the Trustee Cash sufficient to pay and discharge all amounts due
and owing on all Outstanding Notes (other than Notes replaced pursuant to Section 2.11 of the Base Indenture) and if in either case the Company pays all other sums payable under this Supplemental Indenture by the Company, then the Indenture
(including this Supplemental Indenture) (as it relates to the Notes) shall, subject to Section 2.11 of the Base Indenture, cease to be of further effect with respect to the Notes. The Trustee shall acknowledge satisfaction and discharge of the
Indenture (including this Supplemental Indenture) (as it relates to the Notes) with respect to the Notes on demand of the Company accompanied by an Officers’ Certificate and an Opinion of Counsel and at the cost and expense of the Company.

 Section 7.02 Repayment to the Company. The Trustee and the Paying Agent shall promptly turn over to the Company upon written
request any excess money or securities held by them at any time. 
  

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 Subject to any applicable abandoned property law, the Trustee and the Paying Agent shall pay to the
Company upon request any money held by them for the payment of principal or interest that remains unclaimed for two years and, thereafter, Holders entitled to the money must look to the Company for payment as general creditors. 
 ARTICLE 8 
 AMENDMENTS 
 Section 9.02 of the Base Indenture shall not apply to the Notes except as, and to the extent, described in this Article 8. 
 Section 8.01 Without Consent of Holders. The Company and the Trustee may enter into any supplemental indenture to amend or supplement the
Indenture (including this Supplemental Indenture) or the Notes without notice to, or the consent of, any Holder to: 
 (a)
evidence the assumption of the Company’s obligations under the Indenture or the Notes by a successor Person under Article 5; 
 (b) surrender any of the Company’s rights or powers under the Indenture; 
 (c) add covenants or Events of
Default for the benefit of the Holders of Notes; 
 (d) add guarantees with respect to the Notes (including pursuant to
Article 11) or to secure the Notes; 
 (e) cure any omission or correct any inconsistency in the Indenture, so long as such
action will not materially adversely affect the interests of the Holders; 
 (f) cure any ambiguity, defect or inconsistency;

 (g) modify or amend the Indenture to permit the qualification of the Indenture or any supplemental indenture hereto under
the TIA; 
 (h) establish the forms or terms of the Notes pursuant to Article 2 of the Base Indenture and to change the
procedures for transferring and exchanging Notes so long as such change does not adversely affect the Holders of any Outstanding Notes; 
 (i) evidence the acceptance of appointment by a successor Trustee; 
 (j) provide for the
issuance of Additional Notes as permitted by Section 1.03 of this Supplemental Indenture and Section 2.05 of the Base Indenture, which will have terms substantially identical to the other Outstanding Notes except as specified in
Section 1.03 of this Supplemental Indenture and Section 2.05 of the Base Indenture, and which will be treated, together with any other Outstanding Notes, as a single series of Debt Securities; 
 (k) solely to conform the provisions of this Supplemental Indenture or the Notes to the description hereof and thereof contained in the
Preliminary Prospectus Supplement relating to the Notes dated March 4, 2008 and the Pricing Term Sheet relating to such Preliminary Prospectus Supplement dated March 5, 2008 and the Final Prospectus Supplement relating to the 

  

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Notes dated March 5, 2008 (it being understood that the incorrect two references to clause (8) in the first full paragraph on page S-59 of such
Preliminary Prospectus Supplement were corrected to refer to clause (9) in both instances by means of the Form 8-K filed by the Company on March 10, 2008 and incorporated by references into the Final Prospectus Supplement);

 (l) make any other change to the Indenture or forms or terms of the Notes so long as such change will not adversely affect
the interests of the Holders of the Notes; 
 (m) to add to, change or eliminate any of the provisions of the Indenture in
respect of one or more series of Debt Securities other than the Notes; or 
 (n) to establish the form or terms of Debt
Securities of any series other than the Notes as permitted by Sections 2.01 and 2.05 of the Base Indenture. 
 The Trustee is hereby
authorized to join with the Company in the execution of any such supplemental indenture, to make any further appropriate agreements and stipulations which may be therein contained and to accept the conveyance, transfer, assignment, mortgage or
pledge of any property thereunder, but the Trustee shall not be obligated to enter into any such supplemental indenture which affects the Trustee’s own rights, duties or immunities under the Indenture or otherwise. 
 Any supplemental indenture authorized by the provisions of this Section 8.01 may be executed by the Company and the Trustee without the consent of
the Holders of any of the Notes at the time Outstanding, notwithstanding any of the provisions of Section 8.02. 
 After an amendment
under this Section 8.01 becomes effective, the Company shall mail to Holders a notice briefly describing such amendment. The failure to give such notice to all such Holders, or any defect therein, shall not impair or affect the validity of an
amendment under this Section. 
 Section 8.02 With Consent of Holders. With the consent of the Holders of a majority in aggregate
principal amount of the Notes at the time Outstanding (including the consents obtained in connection with a purchase of, or tender or exchange offer for, Notes), the Company and the Trustee may enter into any supplemental indenture to amend or
supplement the Indenture (including this Supplemental Indenture) or the Notes for the purpose of adding any provisions to or changing in any manner or eliminating any of the provisions of the Notes or the Indenture (including this Supplemental
Indenture) or of any supplemental Indenture to the Indenture or of modifying in any manner the rights of the Holders of the Notes. In addition, the Holders of a majority in aggregate principal amount of the Outstanding Notes (including consents
obtained in connection with a purchase of, or tender or exchange offer for, Notes) may waive the Company’s compliance in any instance with any provision of the Indenture (including this Supplemental Indenture) as it relates to the Notes without
notice to the other Holders of Notes. However, no amendment, supplement or waiver may be made without the consent of each Holder of Outstanding Notes affected thereby if such amendment, supplement or waiver would (with respect to Notes held by any
non-consenting Holder): 
 (a) change the stated maturity of the principal of, or the date any installment of interest
(including Additional Interest, if any) is due on, the Notes; 
  

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 (b) reduce the principal amount of or rate of interest (including Additional Interest, if
any) on the Notes; 
 (c) reduce the amount of principal payable upon acceleration of the maturity of the Notes; 

(d) change the currency of payment of principal or interest amounts (including Additional Interest, if any) on the Notes; 

(e) impair the right to institute suit for the enforcement of any payment on or with respect to the Notes; 
 (f) modify the time or price at which the Notes may be redeemed hereunder; 
 (g) amend, change or modify in any material respect the provisions with respect to the purchase rights of the Holders under
Section 3.07 on the dates specified thereunder and Section 3.08 after a Fundamental Change has occurred, in each such case in a manner adverse to Holders of Notes; 
 (h) adversely affect the right of Holders to convert the Notes; 
 (i) reduce the percentage of the aggregate principal amount of Outstanding Notes required for modification or amendment of the Indenture
(including this Supplemental Indenture) or the Notes; 
 (j) reduce the percentage of the aggregate principal amount of
Outstanding Notes necessary for waiver under this Section 8.02 of compliance with the Indenture (including the Supplemental Indenture) or waiver under Section 6.04 of defaults; and 
 (k) modify the provisions of the first paragraph of this Section 8.02 or Section 6.04 except to increase the percentage of
Outstanding Notes required for any amendment or modification or waiver specified therein or to provide for the consent of each Holder of any affected Note being required for any matter. 
 It shall not be necessary for the consent of the Holders under this Section 8.02 to approve the particular form of any proposed supplemental
indenture, but it shall be sufficient if such consent approves the substance thereof. 
 Any Notes held by the Company or any of its
Subsidiaries shall be disregarded for voting purposes in connection with any notice, waiver, consent or direction requiring the vote or concurrence of Note holders. 
 After a supplemental indenture under this Section 8.02 becomes effective, the Company shall mail to each Holder a notice briefly describing the supplemental indenture. Notwithstanding anything in this
Section 8.02 to the contrary, the failure of the Company to give such notice to all the Holders, or any defect in the notice, will not impair or affect the validity of the supplemental indenture. 
 Consents of Holders given pursuant to this Section 8.02 shall be evidenced as provided in Section 8.01 of the Base Indenture. 
  

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 Upon the request of the Company, accompanied by a copy of a Board Resolution authorizing the execution of
any such supplemental indenture, and upon the filing with the Trustee of evidence of the consent of Holders as aforesaid, the Trustee shall join with the Company in the execution of such supplemental indenture unless such supplemental indenture
affects the Trustee’s own rights, duties or immunities under the Indenture or otherwise, in which case the Trustee may in its discretion but shall not be obligated to enter into such supplemental indenture. 
 For purposes of this Article 8 and Article 9 of the Base Indenture, a supplemental indenture which changes or eliminates any covenant or other provision
of the Indenture which has been expressly included solely for the benefit of one or more particular series of Debt Securities other than the Notes or which modifies the rights of the Holders of Debt Securities of such series with respect to such
covenant or other provision, shall be deemed not to affect the rights under the Indenture or the interests of the Holders of Notes. 
 Section 8.03 Compliance with Trust Indenture Act. Every supplemental indenture executed pursuant to this Article shall comply with the TIA. 
 Section 8.04 Revocation and Effect of Consents, Waivers and Actions. A consent to a supplemental indenture or a waiver by a Holder of a Note shall bind the Holder and every subsequent Holder of that Note
or portion of the Note that evidences the same debt as the consenting Holder’s Note, even if notation of the consent or waiver is not made on the Note. However, any such Holder or subsequent Holder may revoke the consent or waiver as to such
Holder’s Note or portion of the Note if the Trustee receives the notice of revocation before the date the supplemental indenture or waiver becomes effective. After a supplemental indenture or waiver becomes effective, it shall bind every
Holder. A supplemental indenture or waiver becomes effective upon the execution of such supplemental indenture or waiver by the Trustee. 
 The Company may, but shall not be obligated to, fix a record date for the purpose of determining the Holders entitled to give their consent or take any other action described above or required or permitted to be taken pursuant to this
Supplemental Indenture. If a record date is fixed, then notwithstanding the immediately preceding paragraph, those Persons who were Holders at such record date (or their duly designated proxies), and only those Persons, shall be entitled to give
such consent or to revoke any consent previously given or to take any such action, whether or not such Persons continue to be Holders after such record date. No such consent shall be valid or effective for more than 120 days after such record date.

 Section 8.05 Notation on or Exchange of Notes. Notes authenticated and delivered after the execution of any supplemental
indenture pursuant to this Article may, and shall if required by the Trustee, bear a notation in form approved by the Trustee as to any matter provided for in such supplemental indenture. If the Company shall so determine, new Notes so modified as
to conform, in the opinion of the Trustee and the Board of Directors, to any such supplemental indenture may be prepared and executed by the Company and authenticated and delivered by the Trustee in exchange for outstanding Notes. 
 Section 8.06 Trustee to Sign Supplemental Indentures. The Trustee shall sign any supplemental indenture authorized pursuant to this
Article 8 if the amendment contained therein does not affect the rights, duties, liabilities or immunities of the Trustee. If it does, the Trustee may, but need not, sign such supplemental indenture. In signing such supplemental indenture the
Trustee shall be provided with, and (subject to the provisions of Section 7.01 of the Base Indenture) shall be fully protected in relying upon, an Officers’ Certificate and an Opinion of Counsel stating that such amendment is authorized or
permitted by the Indenture. 
  

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 Section 8.07 Effect of Supplemental Indentures. Upon the execution of any supplemental
indenture under this Article, the Indenture (including this Supplemental Indenture) shall be modified in accordance therewith, and such supplemental indenture shall form a part of the Indenture for all purposes; and every Holder of Notes theretofore
or thereafter authenticated and delivered hereunder shall be bound thereby. Nothing in this Supplemental Indenture shall limit or affect the provisions of Article IX or Section 6.06 of the Base Indenture insofar as relating to any amendment or
waiver in respect of any series of Debt Securities other than the Notes. 
 ARTICLE 9 
 CONVERSIONS 
 Section 9.01 Conversion Rights. 
 (a) Subject to the further provisions of this Article 9, a Holder of Notes may surrender such Notes for conversion (or any portion thereof equal to $1,000
or any integral multiple of $1,000 in excess thereof): 
 (x) at any time prior to 5:00 p.m. (New York City time) on
September 20, 2027 only in the circumstances and to the extent specified in clauses (i) through (vi) below: 
 (i) during any calendar quarter commencing after the date of original issuance of the Notes, if the Closing Sale Price per share of Common Stock for at least 20 Trading Days in the period of 30 consecutive Trading Days ending on the last
Trading Day of the calendar quarter preceding the quarter in which the conversion occurs is more than 130% of the Base Conversion Price of the Notes in effect on such last Trading Day; 
 (ii) during the ten consecutive Trading Day period following any five consecutive Trading Day period in which the Trading Price for the
Notes for each such Trading Day was, as determined in accordance with the procedures described in Section 9.01(c), less than 98% of the Closing Sale Price of the Common Stock on such date multiplied by the then Applicable Conversion Rate;

 (iii) at any time prior to 5:00 p.m. (New York City time) on the second scheduled Trading Day prior to the Redemption
Date (after which the Holder’s right to convert will expire unless the Company defaults in the payment of the Redemption Price) with respect to Notes called for redemption, if the Company or the Trustee has issued a notice of redemption of
Notes pursuant to Section 3.03 hereof, even if such Notes are not otherwise convertible at such time; 
 (iv) at any time
after the Company gives notice to Holders of Notes of any election by it to distribute to all, or substantially all, Holders of Common Stock (with a copy to the Trustee and the Conversion Agent): 
 (A) rights or warrants entitling such Holders of Common Stock to subscribe for or purchase the Company’s Common Stock at less than
the Current Market Price on the record date for such issuance or 

  

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 (B) Cash, debt securities (or other evidence of Indebtedness) or other assets (excluding
dividends or distributions described in Sections 9.06(a)(i) and 9.06(b)) which distribution has a per share value exceeding 10% of the Current Market Price of the Company’s Common Stock as of the Trading Day immediately preceding the
declaration date for such distribution; 
 in each case, until the earlier of 5:00 p.m. (New York City time) on the Business Day prior to the
Ex-Dividend Date or the Company’s announcement that such distribution will not take place; provided this Section 9.01(a)(iv) shall not apply if the Holder of a Note otherwise participates in a distribution on an as-converted basis
(solely into shares of the Common Stock at the then Applicable Conversion Rate) without conversion of such Holder’s Notes; provided further if such distribution does not occur as anticipated, the Company will issue a press release and
notify Holders who have elected to convert their Notes promptly after the Company determines that such distribution will not occur and each such Holder may elect to withdraw any then pending election to convert by a written notice of withdrawal
delivered to the Conversion Agent within 10 Business Days after the Company makes such announcement. In such event, Holders who do not make such a withdrawal election will receive the applicable settlement amount with respect to Notes surrendered
for conversion three Business Days following the later of (i) the last day of the applicable Conversion Settlement Averaging Period or (ii) the expiration of the 10 Business Day withdrawal period referred to above; 
 (v) if a Fundamental Change occurs, the Notes may be surrendered for conversion at any time on or after the date which is 40 days prior to
the anticipated effective time of any Fundamental Change as announced by the Company, until 5:00 p.m. (New York City time) on the second scheduled Trading Day immediately preceding the Fundamental Change Purchase Date; and 
 (vi) if the Company consolidates with or merges with or into another Person or is a
party to a binding share exchange or conveys, transfers, sells or otherwise disposes of all or substantially all of its properties and assets (in each case other than with one of the Company’s Wholly-Owned Subsidiaries in a transaction where
the Company’s Common Stock is not converted into the right to receive any securities other than solely in connection with a re-domestication transaction) in each case pursuant to which Common Stock would be converted into (or holders of such
shares would be entitled to receive Cash in lieu thereof) Cash, securities and/or other property, Notes may be surrendered for conversion at any time from or after the date which is 40 days prior to the anticipated effective date of such transaction
and ending on the 15th day following the effective date of such transaction; provided such transaction does not otherwise constitute a
Fundamental Change (to which the provisions of Section 9.01(a)(v) shall instead apply) (any such transaction to which this Section 9.01(a)(vi) applies, a “Transforming Transaction”); the Company shall notify Holders of
Notes and the Trustee at least 40 days prior to the anticipated effective date of such Transforming Transaction; the Board of Directors shall determine the anticipated effective date of such Transforming Transaction, and such determination shall be
conclusive and binding on the Holders; or 
  

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 (y) at any time after September 20, 2027 and on or prior to 5:00 p.m. (New York City
time) on the Business Day immediately preceding the Stated Maturity, regardless of whether any of the conditions specified in clause (x)(i) to (x)(vi) has been satisfied. 
 (b) The Company will determine whether the Notes are convertible as a result of the Closing Sale Price of Common Stock pursuant to Section 9.01(a)(i) on a daily basis during the 30 consecutive Trading Days
described in Section 9.01(a)(i) and will notify the Trustee if the Notes are so convertible. 
 (c) In connection with a conversion
pursuant to Section 9.01(a)(ii) the Company, or upon written request, the Conversion Agent on behalf of the Company, will determine whether the Notes are convertible and, if so, will notify the Trustee and the Company in writing;
provided, however, that the Conversion Agent shall have no obligation to determine the Trading Price of the Notes unless the Company has requested such determination in writing, and the Company shall have no obligation to make such
request unless the Trustee, following a request by a Holder, provides the Company with reasonable evidence that the Trading Price of the Notes on any Trading Day would be less than 98% of the product of the then Applicable Conversion Rate and the
Closing Sale Price of the Common Stock on that date. At such time, the Company shall instruct the Conversion Agent to determine the Trading Price of the Notes beginning on such Trading Day and on each successive Trading Day until the Trading Price
of the Notes is greater than or equal to 98% of the product of the Closing Sale Price for the Common Stock on such date and the then Applicable Conversion Rate. The Conversion Agent’s sole duty in respect of such determination shall consist of
requesting and receiving, and, if applicable, averaging the quotations provided by the independent nationally recognized securities dealers referred to in the definition of “Trading Price.” The Conversion Agent shall be entitled at its
sole discretion to consult with the Company and to request the assistance of the Company in connection with the Conversion Agent’s duties and obligations pursuant to this Section 9.01(c) and the Company agrees, if requested by the
Conversion Agent, to cooperate with, and provide assistance to, the Conversion Agent in carrying out its duties under this Section 9.01(c). 
 (d) If the Company makes a distribution described in Section 9.01(a)(iv), the Company shall notify Holders at least 40 Business Days prior to the Ex-Dividend Date for such distribution. 
 (e) To the extent practicable, the Company will notify Holders of the Notes and the Trustee in writing of the anticipated effective date for a
Fundamental Change not more than 70 days but not less than 40 days prior to such anticipated effective date. 
 (f) The Company hereby
appoints the Trustee as the initial Conversion Agent. The Trustee may resign from its appointment as Conversion Agent at any time and the Company shall then appoint a new Conversion Agent. 
 (g) Notes with respect to which a Purchase Notice or a Fundamental Change Purchase Notice has been given by the Holder may be converted pursuant to this
Section 9.01 only if the Purchase Notice or Fundamental Change Purchase Notice has been withdrawn in accordance with the provisions of Section 3.09 and the Holder is otherwise entitled to convert such Notes. If the Company has called any
Notes for redemption, a holder of such Notes may convert such Notes only until the close of business on the second scheduled Trading Day prior to the Redemption Date unless the Company fails to pay the Redemption Price. 
  

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 (h) Whenever any event described in clauses (i) through (vii) of Section 9.01(a) shall
occur such that the Notes become convertible as provided in this Section 9.01, the Company shall promptly inform the Trustee, issue a press release and use its reasonable efforts to post such information on its website or otherwise publicly
disclose the information, or provide notice to the Holders of the Notes in a manner contemplated by this Supplemental Indenture, including through the facilities of DTC, which press release, website posting, notice or other public disclosure, as the
case may be, shall include: 
 (i) a description of such event; 
 (ii) a description of the periods during which the Notes shall be convertible as provided in clauses (i) through (vii) of
Section 9.01(a); 
 (iii) a statement of whether an adjustment to the Applicable Conversion Rate shall take effect; and

 (iv) the procedures Holders of the Notes must follow to convert their Notes in accordance with Section 9.03 below,
including the name and address of the Conversion Agent. 
 Section 9.02 Conversion Consideration. 
 (a) Subject to the qualifications and the satisfaction of the conditions and during the periods described in Section 9.01(a), and except as otherwise
provided in Section 9.03(e), Holders shall be entitled to convert their Notes in denominations of $1,000 principal amount or integral multiples thereof. 
 (b) If the Company receives any Conversion Notice after (i) the Company has issued a notice of redemption and prior to 5:00 p.m. (New York City time) on the second scheduled Trading Day prior to the Redemption
Date or (ii) the date that is 25 scheduled Trading Days immediately preceding the Stated Maturity (the “Final Notice Date”), the following procedures will apply: 
 (i) If the Company elects to satisfy all or any portion of its conversion obligation in Cash, the Company shall notify Holders through the
Trustee of the dollar amount to be satisfied in Cash (which must be expressed either as 100% of the conversion obligation or as a fixed dollar amount) at any time on or before the date that is two Business Days following the Conversion Date (the
“Cash Settlement Notice Period”). If the Company timely elects to pay Cash for any portion of its conversion obligation, Holders may retract their Conversion Notice at any time during the two Business Days following the final day of
the Cash Settlement Notice Period (the “Conversion Retraction Period”). No such retraction can be made (and a Conversion Notice shall be irrevocable) if the Company does not elect to deliver Cash in lieu of shares (other than Cash
in lieu of fractional shares). Upon the expiration of a Conversion Retraction Period, a Conversion Notice shall be irrevocable. If the Company elects to satisfy all or any portion of its conversion obligation in Cash, and the Conversion Notice has
not been retracted, then settlement (in Cash or in Cash and shares) will occur on the third Business Day following the Conversion Settlement Averaging Period. 
  

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 (ii) If the Company does not elect to satisfy any part of its conversion obligation in
Cash (other than Cash in lieu of any fractional shares), delivery of the shares of Common Stock into which the Notes are converted (and Cash in lieu of any fractional shares calculated based on the Volume Weighted Average Price on the Conversion
Date) will occur as soon as practicable on or after the Conversion Date. 
 (iii) Notwithstanding the foregoing clauses
(i) and (ii), if a Holder surrenders a Note for conversion in connection with a Qualifying Fundamental Change transaction as set forth in Section 9.15, the Company shall deliver any Additional Shares after the Qualifying Fundamental Change
Effective Date even if the settlement date in respect of the other conversion consideration occurs earlier and conversion consideration may be delivered in two payments rather than one as a result. 
 (iv) Settlement amounts will be computed as follows: 
 (A) If the Company elects to satisfy its entire conversion obligation in shares of Common Stock, the Company shall deliver to Holders a
number of shares of Common Stock equal to the product of (1) the aggregate principal amount of Notes to be converted divided by $1,000 and (2) the Applicable Conversion Rate on the Conversion Date. 
 (B) If the Company elects to satisfy its entire conversion obligation in Cash, for each $1,000 principal amount of Notes to be converted,
the Company shall deliver Cash in an amount equal to the sum of the Daily Conversion Values for each Trading Day during the Conversion Settlement Averaging Period. 
 (C) If the Company elects to satisfy a fixed portion (other than 100%) of its conversion obligation in Cash, the Company shall deliver to
Holders, for each $1,000 principal amount of Notes surrendered for conversion, (1) Cash in any amount the Company shall specify (the “Specified Cash Amount”) (provided that if the Specified Cash Amount exceeds the sum of
the Daily Conversion Values for each of the twenty Trading Days during the Conversion Settlement Averaging Period, then the Company shall satisfy its conversion obligation entirely in Cash as set forth in clause (B) above); and (2) a
number of shares of Common Stock equal to the greater of (i) zero and (ii) the sum for each of the twenty Trading Days in the Conversion Settlement Averaging Period the excess, if any, of (a) the Daily Share Amount for such Trading
Day over (b) the number of shares equal to the quotient of (x) one-twentieth of the Specified Cash Amount divided by (y) the Volume Weighted Average Price of the Common Stock on such Trading Day. 
 Section 9.03 Conversion Procedures. 
 (a) The right of conversion attaching to any Note may be exercised by: 
 (i) if such Note is represented by a Global
Note, by book-entry transfer to the Conversion Agent through the facilities of DTC or if such Note is represented by a Certificated Security, by delivery of such Note at the specified office of the Conversion Agent, accompanied, in either case, by a
duly signed and completed notice of conversion and appropriate endorsements and transfer documents if required by the Conversion Agent, a form of such notice which is on the back of the Note or may be obtained from the Conversion Agent (the
“Conversion Notice”), and deliver such Conversion Notice to the Conversion Agent, which notice shall be irrevocable; 
  

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 (ii) if required by the Conversion Agent, furnish appropriate endorsement and transfer
documents; 
 (iii) pay all transfer or similar taxes required to be paid by such Holder pursuant to Section 9.04; and

 (iv) if required pursuant to Section 10.01(c), pay funds equal to interest payable on the next Interest Payment Date.

 The date a Holder complies with all of the applicable requirements is the “Conversion Date,” provided that such Holder complies
with such requirements after 11:00 a.m. (New York City time) on such date, then the Conversion Date shall be the next succeeding Business Day if the requirements are satisfied after 11 a.m. (New York City Time). 
 (b) Notes will be deemed to have been converted immediately prior to 5:00 p.m. (New York City time) on the Conversion Date and the converting Holder
will be treated as a shareholder of record of the Company as of such time. 
 (c) If the last day on which a Note may be converted is not a
Business Day, the Note may be surrendered on the next succeeding day that is a Business Day. 
 (d) Provisions of this Supplemental Indenture
that apply to conversion of all of a Note also apply to conversion of a portion of a Note. Upon surrender of a Note that is converted in part, the Company shall execute, and the Trustee shall authenticate and deliver to the Holder, a new Note or
Notes in an authorized denomination equal in principal amount to the unconverted portion of the Note surrendered. 
 (e) With respect to
Conversion Notices that the Company receives after the Final Notice Date or after the Company has issued a Notice of Redemption and prior to the Redemption Date, the Company shall not send individual notices of its election to satisfy all or any
portion of its conversion obligation in Cash. If the Company chooses to satisfy all or any portion of its conversion obligation in Cash with respect to conversions (i) after the Final Notice Date in Cash, on or before the Final Notice Date or
(ii) after the Company issues a Notice of Redemption and prior to the Redemption Date, on or before giving such notice of redemption, the Company shall send a single notice to Holders (which may be included in the Notice of Redemption, if
applicable) indicating the dollar amount to be satisfied in Cash (which must be expressed either as 100% of the conversion obligation or as a fixed dollar amount). In the event that the Company receives a Conversion Notice from Holders after the
Final Notice Date or after a Notice of Redemption and prior to the Redemption Date, settlement amounts shall be computed and settlement dates shall be determined in the same manner as set forth above. If a Conversion Notice is received from Holders
after the Final Notice Date or after a Notice of Redemption and prior to the Redemption Date, such Holders shall not be allowed to retract the Conversion Notice. 
 (f) To the extent the Company elects to settle a portion of its conversion obligation in shares of Common Stock, no fractional shares shall be issued upon conversion; in lieu thereof, a Holder that would otherwise be
entitled to fractional shares of Common 

  

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Stock will receive a number of shares of Common Stock equal to the aggregate of the fractional shares otherwise deliverable for each Trading Day during the
Conversion Settlement Averaging Period (rounding down to the nearest whole number) and Cash equal to the remainder multiplied by the Volume Weighted Average Price of the Common Stock on the last Trading Day of the Conversion Settlement Averaging
Period. 
 (g) The Cash and any shares of Common Stock (including Cash in lieu of fractional shares) deliverable upon conversion of the Notes
will be delivered through the Conversion Agent. Unless the Company has elected to settle its conversion obligation entirely in shares of Common Stock, this delivery shall generally be made three Business Days after the last day of the Conversion
Settlement Averaging Period. If a Holder surrenders a Note for conversion in connection with a Qualifying Fundamental Change, however, the Company shall not deliver any related additional conversion consideration until after the Effective Date of
the Qualifying Fundamental change it relates to even if the Settlement Date in respect of other conversion consideration occurs earlier and conversion consideration will be delivered in two payments rather than one as a result. 
 (h) If a Holder tenders Notes for conversion (and, if applicable, the Daily Conversion Value is being determined) at a time when the Notes are
convertible into Reference Property in lieu of solely Common Stock, for purposes of the foregoing, the Applicable Conversion Rate will relate to units of Reference Property and the Daily Conversion Values of Reference Property will be determined by
reference to (i) in the case of Reference Property or part of Reference Property that is traded on a United States national securities exchange, including the NASDAQ Global Market or NASDAQ Global Select Market, the applicable stock price of
such security or common stock, (ii) in the case of any other property (other than cash), the value thereof as determined by two independent nationally recognized investment banks as of the effective date of the transaction, and (iii) in
the case of cash, at 100% of the amount thereof. 
 Section 9.04 Taxes on Conversions. If a Holder converts a Note, the Company
shall pay any documentary, stamp or similar issue or transfer tax due on the issue of any shares of Common Stock upon the conversion. However, the Holder shall pay any such tax or duties which are due because the Holder requests the shares to be
issued or delivered in a name other than the Holder’s name. The Conversion Agent may refuse to deliver the certificates representing the Common Stock being issued in a name other than the Holder’s name until the Conversion Agent receives a
sum sufficient to pay any tax which will be due because the Common Stock is to be delivered in a name other than the Holder’s name. Nothing herein shall preclude any tax withholding required by law or regulations. 
 Section 9.05 Company to Provide Stock. The Company shall, prior to issuance of any Notes under this Article 9, and from time to time as may
be necessary, reserve out of its authorized but unissued shares of Common Stock a sufficient number of shares of Common Stock to permit the conversion of the Notes. 
 Any shares of Common Stock delivered upon conversion of the Notes shall be newly issued shares or treasury shares, shall be duly and validly issued and fully paid and nonassessable, shall be free from preemptive or
similar rights and shall be free of any lien or adverse claim. The Company will endeavor promptly to comply with all federal and state securities laws regulating the offer and delivery of Common Stock, if any, upon conversion of Notes, if any, and
will list or cause to have quoted such shares of Common Stock on each national securities exchange or in the over-the-counter market or such other market on which the shares of Common Stock are then listed or quoted. 
  

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 Section 9.06 Base Conversion Price Adjustments. The Base Conversion Price shall be adjusted
from time to time by the Company as follows: 
 (a) In case the Company shall (i) pay a dividend on its Common Stock in
shares of Common Stock, (ii) make a distribution on its Common Stock in shares of Common Stock, (iii) subdivide its outstanding Common Stock into a greater number of shares or (iv) combine its outstanding Common Stock into a smaller
number of shares, the Base Conversion Price in effect immediately prior thereto shall be adjusted so that the Holder of any Note thereafter surrendered for conversion shall be entitled to receive that number of shares of Common Stock which it would
have owned had such Note been converted immediately prior to the record date of such event or the happening of such event (assuming such Note were convertible solely into shares of Common Stock, based on the relevant Base Conversion Price, rather
than Cash or Cash and Common Stock as set forth in Section 9.06(a)). An adjustment made pursuant to this subsection (a) shall become effective on the Ex-Dividend Date in the case of a dividend or distribution and shall become effective
immediately after the effective date in the case of subdivision or combination. If any dividend or distribution of the type described in this Section 9.06(a) is declared but not actually paid or made, the Base Conversion Price shall again be
adjusted to the Base Conversion Price that would have been in effect if such dividend or distribution had not been declared. 
 (b) In case the Company shall issue rights or warrants to all or substantially all holders of its Common Stock entitling them for a period of not more than 60 days to subscribe for or purchase shares of Common Stock (or securities
convertible into Common Stock) at a price per share (or having a conversion price per share) less than the Current Market Price per share of Common Stock on the Trading Day immediately preceding the Ex-Dividend Date for such issuance, the Base
Conversion Price shall be adjusted so that the Base Conversion Price on the Ex-Dividend Date shall equal the price determined by multiplying the Base Conversion Price in effect immediately prior to such Ex-Dividend Date by a fraction of which the
numerator shall be the number of shares of Common Stock outstanding immediately prior to such Ex-Dividend Date plus the number of shares which the aggregate offering price of the total number of shares of Common Stock so offered (or the aggregate
conversion price of the convertible securities so offered, which shall be determined by multiplying the number of shares of Common Stock issuable upon conversion of such convertible securities by the conversion price per share of Common Stock
pursuant to the terms of such convertible securities) would purchase at the Current Market Price per share of Common Stock on the Trading Day immediately preceding such Ex-Dividend Date, and of which the denominator shall be the number of shares of
Common Stock outstanding on such record date plus the number of additional shares of Common Stock offered (or into which the convertible securities so offered are convertible). Such adjustment shall be made successively whenever any such rights or
warrants are issued and shall become effective on such Ex-Dividend Date. If at the end of the period during which such rights or warrants are exercisable not all rights or warrants shall have been exercised or distributed, the adjusted Base
Conversion Price shall be immediately readjusted to what it would have been based upon the number of additional shares of Common Stock actually issued (or the number of shares of Common Stock issuable upon conversion of convertible securities
actually issued). 
 (c) In case the Company shall distribute to all or substantially all holders of its Common Stock any
shares of Capital Stock of the Company (other than Common Stock), evidences of Indebtedness or other non-Cash assets or rights or warrants to subscribe for or purchase any securities (including notes of any Person other than the Company but
excluding (1) dividends or 

  

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distributions paid exclusively in Cash referred to in Section 9.06(d), (2) dividends or distributions referred to in Section 9.06(f),
(3) dividends or distributions referred to in Section 9.06(a)), (4) those rights and warrants referred to in Section 9.06(b) and (5) the distribution of rights to all or substantially all holders of Common Stock pursuant to
the adoption of a stockholder rights plan), then in each such case the Base Conversion Price shall be adjusted so that the Base Conversion Price on the Ex-Dividend Date for such distribution shall equal the price determined by multiplying the
current Base Conversion Price by a fraction of which the numerator shall be the Current Market Price per share of the Common Stock on the Trading Day immediately preceding such Ex-Dividend Date less the fair market value on such Trading Day (as
determined by the Board of Directors, whose determination shall be conclusive evidence of such fair market value and which shall be evidenced by an Officers’ Certificate delivered to the Trustee and the Conversion Agent) of the portion of the
Capital Stock, evidences of Indebtedness or other non-Cash assets or such rights or warrants so distributed applicable to one share of Common Stock (determined on the basis of the number of shares of Common Stock outstanding on the Trading Day
immediately preceding such Ex-Dividend Date), and of which the denominator shall be the Current Market Price per share of the Common Stock on the Trading Day immediately preceding such Ex-Dividend Date. Such adjustment shall be made successively
whenever any such distribution is made and shall become effective immediately after the record date for the determination of shareholders entitled to receive such distribution. 
 In the event the then fair market value (as so determined) of the portion of the Capital Stock, evidences of Indebtedness or other
non-Cash assets or such rights or warrants so distributed applicable to one share of Common Stock is equal to or greater than the Current Market Price per share of the Common Stock on the Trading Day immediately preceding such Ex-Dividend Date, in
lieu of the foregoing adjustment, adequate provision shall be made so that each Holder of a Note shall have the right to receive upon conversion the amount of Capital Stock, evidences of Indebtedness or other non-Cash assets so distributed or of
such rights or warrants such Holder would have received had such Holder converted each Note immediately prior to the record date for such distribution. In the event that such dividend or distribution is not so paid or made, the Base Conversion Price
shall again be adjusted to be the Base Conversion Price which would then be in effect if such dividend or distribution had not been declared. If the Board of Directors determines the fair market value of any distribution for purposes of this
Section 9.06(c) by reference to the actual or when issued trading market for any securities, it must in doing so consider the prices in such market over the same period used in computing the Current Market Price of Common Stock. 
 (d) In case the Company shall, by dividend or otherwise, at any time distribute (a “Triggering Distribution”) to all or
substantially all holders of its Common Stock Cash dividends and other Cash distributions (other than (x) distributions described in Section 9.06(f) below or (y) any dividend or distribution in connection with liquidation, dissolution
or winding up), the Base Conversion Price shall be reduced so that the same shall equal the price determined by multiplying such Base Conversion Price in effect immediately before 5:00 p.m. (New York City time) on the Trading Day immediately
preceding the Ex-Dividend Date with respect to such Cash dividend or distribution by a fraction of which the numerator shall be the Closing Sale Price per share of the Common Stock as of the Trading Day immediately preceding the Ex-Dividend Date
with respect to the dividend or distribution less the Dividend Adjustment Amount, and the denominator shall be such Closing Sale Price per share of the 

  

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Common Stock as of the Trading Day immediately preceding the Ex-Dividend Date with respect to the dividend or distribution. Such decrease shall become
effective immediately prior to 9:00 a.m. (New York City time) on the Ex-Dividend Date for such dividend or distribution; provided, however, that, in the event the portion of the Triggering Distribution applicable to one share of
Common Stock is equal to or greater than the Current Market Price on such record date, in lieu of the foregoing adjustment, adequate provision shall be made so that each Holder shall have the right to receive upon conversion the amount of Cash such
Holder would have received had such Holder converted each Note immediately prior to the record date for such dividend or distribution. In the event that such dividend or distribution is not so paid or made, the Base Conversion Price shall again be
adjusted to be the Base Conversion Price that would then be in effect if such dividend or distribution had not been declared. 
 (e) In case any tender offer made by the Company or any of its Subsidiaries (not including any open-market share repurchase program or buy-back transaction not pursuant to a tender offer) for Common Stock shall expire and such tender offer
(as amended upon the expiration thereof) shall involve the payment of aggregate consideration in an amount (determined as the sum of the aggregate amount of Cash consideration and the aggregate fair market value (as determined by the Board of
Directors, whose determination shall be conclusive evidence thereof and which shall be evidenced by an Officers’ Certificate delivered to the Trustee and the Conversion Agent thereof) of any other consideration) that exceeds an amount equal to
the Current Market Price per share of Common Stock as of the last date (the “Expiration Date”) tenders could have been made pursuant to such tender offer (as it may be amended) (the last time at which such tenders could have been
made on the Expiration Date is hereinafter called the “Expiration Time”), then, immediately prior to 9:00 a.m. (New York City time) on the day after the Expiration Date, the Base Conversion Price shall be reduced so that the
same shall equal the price determined by multiplying the Base Conversion Price in effect immediately prior to 5:00 p.m. (New York City time) on the Expiration Date by a fraction the numerator of which will be the product of the number of shares
of Common Stock outstanding (including tendered shares but excluding any shares held by the Company in treasury) immediately before the Expiration Time and the Current Market Price per share of Common Stock on the Trading Day next succeeding the
Expiration Date and the denominator of which will be the sum of (x) the aggregate consideration payable to stockholders based on the acceptance (up to any maximum specified in the terms of the tender offer) of all shares validly tendered and
not withdrawn as of the Expiration Time (for the purpose of this Section 9.06(e), “Purchased Shares”) and (y) the product of the number of shares of Common Stock outstanding (less any Purchased Shares and excluding any
shares held by the Company in treasury) immediately before the Expiration Time and the Current Market Price per share of Common Stock on the Trading Day next succeeding the Expiration Date. In the event that the Company is obligated to purchase
shares pursuant to any such tender offer, but the Company is permanently prevented by applicable law from effecting any or all such purchases or any or all such purchases are rescinded, the Base Conversion Price shall again be adjusted to be the
Base Conversion Price which would have been in effect based upon the number of shares actually purchased. If the application of this Section 9.06(e) to any tender offer would result in an increase in the Base Conversion Price, no adjustment
shall be made for such tender offer under this Section 9.06(e). 
 For purposes of this Section 9.06(e), the term “tender
offer” shall mean and include both tender offers and exchange offers, all references to “purchases” of shares in tender offers (and all similar references) shall mean and include both the purchase of 

  

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shares in tender offers and the acquisition of shares pursuant to exchange offers, and all references to “tendered shares” (and all similar
references) shall mean and include shares tendered in both tender offers and exchange offers. 
 (f) In the case the Company
shall distribute shares of Capital Stock or similar equity interests of any Subsidiary or business unit (a “Spin-Off”), then in each such case the Base Conversion Price shall be adjusted so that the Base Conversion Price in effect
immediately before 5:00 p.m. (New York City time) on the Trading Day immediately preceding the Ex-Dividend Date with respect to that distribution will be decreased by multiplying the Base Conversion Price by a fraction the numerator of which is the
average of the Closing Sale Prices of a share of Common Stock on each of the 10 consecutive Trading Days beginning on the Ex-Dividend Date with respect to the Spin-Off and the denominator of which is the average of the Closing Sale Prices of a share
of Common Stock on each of the 10 consecutive Trading Days beginning on the Ex-Dividend Date with respect to the Spin-Off plus the average of the Closing Sale Prices of the portion of those shares of Capital Stock or similar equity interests so
distributed applicable to one share of Common Stock on each of those 10 consecutive Trading Days. 
 (g) For purposes hereof,
the term “Dividend Adjustment Amount” means the full amount of the dividend or distribution to the extent payable in Cash applicable to one share of the Common Stock. 
 (h) For the avoidance of doubt, any adjustments to the Applicable Conversion Rate pursuant to this Section shall be made through the date
on which payment pursuant to Section 9.02 is made (without regard to the intervening occurrence of the Stated Maturity, should that occur). 
 (i) The Company has adopted a stockholder rights plan, pursuant to which certain rights (the “Rights”) are distributed to the holders of Common Stock. The Company’s stockholder rights plan
provides that each share of Common Stock issued (including upon conversion of the Notes) at any time prior to the distribution of separate certificates representing such Rights will be entitled to receive such Rights. There shall not be any
adjustment to the Base Conversion Price at any time based on the Company’s stockholder rights plan, any amendment to that plan, or any further stockholder rights plan as contemplated by Section 9.06(j) below that the Company may adopt
prior to the distribution of separate certificates representing such Rights. If, however, prior to any conversion, the Rights have separated from the Common Stock, the Base Conversion Price shall be adjusted at the time of separation as if the
Company distributed to all holders of Common Stock, shares of Capital Stock, evidences of indebtedness, the Company’s assets, Debt Securities or rights as described in Section 9.06(c), subject to readjustment in the event of the
expiration, termination or redemption of such Rights. 
 (j) In the event that (x) the Company distributes rights or
warrants pursuant to any amendment to the Company’s existing stockholder rights plan or any further stockholder rights plan to all holders of its Common Stock entitling the holders thereof to subscribe for or purchase shares of the
Company’s Capital Stock, including Common Stock (either initially or under certain circumstances), and (y) such rights or warrants, until the occurrence of a specified event or events (“Trigger Event”): (i) are deemed
to be transferred with such shares of the Common Stock; (ii) are not exercisable; and (iii) are also issued in respect of 

  

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future issuances of the Common Stock, then, such rights or warrants shall be deemed not to have been distributed for purposes of Section 9.06(c) (and no
adjustment to the Base Conversion Price under Section 9.06(c) will be required) until the occurrence of the earliest Trigger Event, whereupon such rights and warrants shall be deemed to have been distributed and an appropriate adjustment (if
any is required) to the Base Conversion Price shall be made under Section 9.06(c). In addition, in the event of any distribution (or deemed distribution) of rights or warrants, or any Trigger Event or other event (of the type described in the
preceding sentence) with respect thereto that was counted for purposes of calculating a distribution amount for which an adjustment to the Base Conversion Price under Section 9.06(c) was made, (1) in the case of any such rights or warrants
that shall all have been redeemed or repurchased without exercise by any holders thereof, the Base Conversion Price shall be readjusted upon such final redemption or repurchase to give effect to such distribution or Trigger Event, as the case may
be, as though it were a cash distribution, equal to the per share redemption or repurchase price received by a holder or holders of Common Stock with respect to such rights or warrants (assuming such holder had retained such rights or warrants),
made to all holders of Common Stock as of the date of such redemption or repurchase, and (2) in the case of such rights or warrants that shall have expired or been terminated without exercise by any holders thereof, the Base Conversion Price
shall be readjusted as if such rights and warrants had not been issued. 
 (k) The Board of Directors will make appropriate
adjustments, in its good faith determination, to account for any adjustment to the Base Conversion Price that becomes effective, or any event requiring an adjustment to the Base Conversion Price where the Ex-Dividend Date of the event occurs, during
any consecutive Trading Day period used for the measurement of any adjustment required under this Section 9.06. 
 Section 9.07
No Adjustment. Notwithstanding the provisions of Section 9.06, no adjustment in the Base Conversion Price shall be required unless the adjustment would result in a change of at least 1% in the Base Conversion Price as last adjusted;
provided, however, that any adjustments which by reason of this Section 9.07 are not required to be made shall be carried forward and taken into account in any subsequent adjustment, regardless of whether the aggregate adjustment
is less than 1%, upon required purchases of the Notes in connection with a Fundamental Change and five Business Days prior to the Stated Maturity. Except as expressly provided in Section 9.06 or Section 9.10, the Applicable Conversion
Price will not be adjusted for the issuance of any shares of Common Stock or any securities convertible into or exchangeable for the Common Stock or carrying the right to purchase the Common Stock or any such security. The Base Conversion Price will
not be adjusted for the issuances or distributions specified in Section 9.06(b), (c), (d) or (f) hereto if Holders of the Notes are entitled to participate in the issuance or distribution on substantially the same terms as holders of
Common Stock as if such Holders had converted their Notes solely into Common Stock immediately prior to such issuance or distribution at the then Applicable Conversion Rate. 
 Section 9.08 Adjustment for Tax Purposes. The Company shall be entitled to make such reductions in the Base Conversion Price, for the
remaining term of the Notes or any shorter term, in addition to those required by Section 9.06, as the Board of Directors may determine to be advisable in order to avoid or diminish any tax to any holders of shares of Common Stock or rights to
purchase Common Stock resulting from any stock dividends, subdivisions of shares, distributions of rights or warrants to purchase or subscribe for stock or securities, distributions of securities convertible into or exchangeable for stock hereafter
made by the Company to its stockholders or from any event treated as such for income tax purposes. 
  

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 Section 9.09 Temporary Reduction of Base Conversion Price. To the extent permitted by
applicable law and rules of any stock exchange on which the Common Stock is then listed, the Company from time to time may reduce the Base Conversion Price by any amount for any period of time if the period is at least 20 Business Days and the Board
of Directors shall have made a determination that such reduction would be in the best interest of the Company. Whenever the Base Conversion Price is reduced pursuant to the preceding sentence, the Company shall provide notice of any reduction in the
Base Conversion Price to the Holders in the manner provided in this Supplemental Indenture, with a copy to the Trustee and Conversion Agent, at least 15 days prior to the date such reduced Base Conversion Price takes effect, and such notice shall
state the reduced Base Conversion Price and the period during which it will be in effect. 
 Section 9.10 Effect of Reclassification,
Consolidation, Merger or Sale on Conversion Privilege. 
 (a) If any of the following shall occur, namely: 
 (i) any reclassification of shares of Common Stock issuable upon conversion of the Notes (other than a change only in par value, or from
par value to no par value, or from no par value to par value, or as a result of a subdivision or combination of the Common Stock); 
 (ii) any consolidation or merger to which the Company is a party other than a merger in which the Company is the continuing corporation and which does not result in any reclassification of, or change (other than in par value, or from par
value to no par value, or from no par value to par value, or as a result of a subdivision or combination) in, outstanding shares of Common Stock; or 
 (iii) any sale assignment, conveyance, transfer, lease or other disposition of all or substantially all of the Company’s assets, 
 in each case as a result of which Common Stock is converted into, or exchanged for, stock, other securities, other property or assets (including Cash) or any combination thereof, then, (x) from and after the
effective time of such transaction, the settlement amount in respect of the Company’s conversion obligation will be computed pursuant to Section 9.02 hereto, based on the kind and amount of shares of stock, securities, or other property or
assets (including cash or any combination thereof) that holders of Common Stock were entitled to receive in respect of each share of Common Stock in such transaction (the “Reference Property”), and Reference Property will be
delivered in lieu of each share of Common Stock that would have otherwise been deliverable upon conversion (assuming the Company had settled its conversion obligations entirely in Common Stock); and (y) as a condition to the consummation of
such transaction, the Company shall (or, in the case of any transaction in clause (ii) above in which the Company is not the continuing corporation or in clause (iii) above (“Non-Surviving Transaction”), the Company shall
cause such other Person to) execute and deliver to the Trustee a supplemental indenture providing for the matters specified in clause (x) above and providing that the rights and obligations of the Company (or, in the event of a Non-Surviving
Transaction, such other Person) and the Holders in respect of Reference Property shall be as nearly equivalent as may be practicable to the rights and obligations of the Company and Holders in respect of Common Stock hereunder as set forth in this
Article IX hereof and elsewhere herein. Such supplemental indenture shall 

  

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provide for adjustments which, for events subsequent to the effective date of such supplemental indenture, shall be as nearly equivalent as may be
practicable to the adjustments provided for in this Article. The above provisions of this Section 12.10 shall similarly apply to successive transactions specified in clauses (i), (ii) and (iii) above. In the event of any issuance,
dividend or distribution to holders of Common Stock that occurs upon any such transaction, the first sentence of this paragraph will apply in lieu of any conversion price adjustment otherwise applicable pursuant to Section 9.06(a)(i) or
(ii) or Sections 9.06(b), (c), (d) or (f). If the Common Stock has been replaced by Reference Property as a result of any transaction described in the first sentence of this paragraph, references to Common Stock are intended to refer to
such Reference Property. 
 From and after the effective time of any transaction referred to in the immediately preceding paragraph,

 (x) the Applicable Conversion Rate will relate to units of such Reference Property (a “unit” of Reference
Property being the kind and amount of Reference Property that a holder of one share of Common Stock would receive in such transaction); and 
 (y) the Daily Conversion Values will be determined based on the value of one unit of Reference Property determined pursuant to Section 9.02 and Section 9.03. 
 (b) If any transaction referred to in Section 9.10(a) causes Common Stock to be converted into the right to receive more than a single type of
consideration (determined based in part upon any form of stockholder election), the Reference Property into which the Notes will be thereafter convertible will be deemed to be the weighted average of the types and amounts of such consideration
received by the holders of Common Stock that affirmatively make such an election. The determination of the Reference Property will apply to all of the Notes and we will notify the Trustee of the composition of the Reference Property promptly after
it is determined. 
 Section 9.11 Notice of Adjustment. Whenever the Applicable Conversion Rate or Base Conversion Price is
adjusted, the Company shall promptly mail to Holders a notice of the adjustment. The Company shall file with the Trustee and the Conversion Agent such notice briefly stating the facts requiring the adjustment and the manner of computing it. The
notice of adjustment shall be conclusive evidence that the adjustment is correct. Neither the Trustee nor any Conversion Agent shall be under any duty or responsibility with respect to any such notice of adjustment except to exhibit the same to any
Holder desiring inspection thereof. 
 Section 9.12 Company Determination Final; Adjustments to Nearest One-Ten Thousandth
(1/10,000) of a Share. Any determination that the Company or the Board of Directors must make under this Article 9 is conclusive, absent manifest error. All calculations and other determinations under this Article 9 shall be made to
the nearest one-ten thousandth (1/10,000) of a share. 
 Section 9.13 Trustee’s Adjustment Disclaimer. The Trustee has
no duty to determine when the Notes are convertible or when an adjustment under this Article 9 should be made, how it should be made or what it should be. The Trustee shall not be accountable for and makes no representation as to the validity or
value of any Notes or assets issued upon conversion of Notes. The Trustee shall not be responsible for the Company’s failure to comply with this Article 9. Each Conversion Agent shall have the same protection under this Section 9.13 as the
Trustee. 
  

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 Section 9.14 Limitation on Adjustments. The Company shall not take any action that would
result in an adjustment pursuant to the foregoing provisions in this Article 9 if that adjustment would reduce the Base Conversion Price below the then par value of the shares of Common Stock issuable upon conversion of the Notes. 
 Section 9.15 Adjustment to Applicable Conversion Rate upon Certain Fundamental Change Transactions. 
 (a) If a Qualifying Fundamental Change occurs prior to the Stated Maturity, upon conversion of the Notes pursuant to Section 9.01 in connection with
such Qualifying Fundamental Change, the Applicable Conversion Rate of the Notes being converted by such Holder at that time shall be increased by an additional number of shares of Common Stock (the “Additional Shares”) determined by
reference to the table in Section 9.15(c). The adjustment provided for in this Section 9.15 shall be made only if the Qualifying Fundamental Change actually occurs or becomes effective. If a Qualifying Fundamental Change occurs, any
conversion of Notes by a Holder will be deemed for these purposes to be “in connection with” such Qualifying Fundamental Change if it occurs during the period that begins on the date on which such Qualifying Fundamental Change becomes
effective and ends at 5:00 p.m. (New York City time) on the second scheduled Trading Day immediately preceding the Fundamental Change Purchase Date relating to such Qualifying Fundamental Change. 
 (b) For purposes of determining the applicable number of Additional Shares: 
 (i) “Effective Date” shall mean the date the Qualifying Fundamental Change occurs or becomes effective; and 

(ii) “Stock Price” shall mean: 
 (A) in the case of a Qualifying Fundamental Change described in clause (ii) of the definition of “Change in Control,” the
price paid per share of Common Stock in the Change in Control, unless the holders of Common Stock receive only Cash in such Qualifying Fundamental Change, in which event “Stock Price” shall mean the Cash amount paid per share; and

 (B) in the case of a Qualifying Fundamental Change described in clause (i) of the definition of “Change in
Control,” the average of the last reported Closing Sale Prices of Common Stock over the five consecutive Trading Day period ending on the Trading Day preceding the Effective Date of such Qualifying Fundamental Change. 
 (c) The Stock Price figures set forth in the first row of the table (i.e., column headers) shall be adjusted as of any date on which the Base
Conversion Price of the Notes is adjusted pursuant to this Article 9 and shall be adjusted by the same adjustment factor applied to the Base Conversion Price pursuant to this Article 9. The number of Additional Shares indicated in the
table shall be adjusted by the reciprocal of that adjustment factor. 
 The following table sets forth the increase in the Applicable
Conversion Rate, expressed as a number of Additional Shares to be added per $1,000 principal amount of Notes. 
  

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	 	  	Stock Price	  	 	  	 	  	 	  	 	  	 	  	 	  	 	  	 	  	 	  	 	  	 	  	 
	 Effective Date
	  	$	44.22	  	$	48.00	  	$	50.00	  	$	55.00	  	$	60.00	  	$	65.00	  	$	70.00	  	$	75.00	  	$	80.00	  	$	90.00	  	$	100.00	  	$	150.00	  	$	200.00	  	$	250.00
	 March 12, 2008
	  	 	7.5300	  	 	7.5300	  	 	7.5300	  	 	6.5546	  	 	5.6552	  	 	4.9306	  	 	4.3397	  	 	3.8526	  	 	3.4471	  	 	2.8172	  	 	2.3562	  	 	1.2147	  	 	0.7840	  	 	0.5649
	 September 15, 2008
	  	 	7.5300	  	 	7.5300	  	 	7.5077	  	 	6.3453	  	 	5.4353	  	 	4.7065	  	 	4.1151	  	 	3.6304	  	 	3.2296	  	 	2.6121	  	 	2.1661	  	 	1.0903	  	 	0.6994	  	 	0.5044
	 March 15, 2009
	  	 	7.5300	  	 	7.5300	  	 	7.2639	  	 	6.0824	  	 	5.1620	  	 	4.4301	  	 	3.8401	  	 	3.3600	  	 	2.9669	  	 	2.3665	  	 	1.9406	  	 	0.9484	  	 	0.6048	  	 	0.4372
	 September 15, 2009
	  	 	7.5300	  	 	7.5300	  	 	6.9787	  	 	5.7747	  	 	4.8423	  	 	4.1074	  	 	3.5200	  	 	3.0470	  	 	2.6637	  	 	2.0868	  	 	1.6856	  	 	0.7954	  	 	0.5065	  	 	0.3679
	 March 15, 2010
	  	 	7.5300	  	 	7.2353	  	 	6.6393	  	 	5.4092	  	 	4.4635	  	 	3.7265	  	 	3.1438	  	 	2.6813	  	 	2.3116	  	 	1.7666	  	 	1.3976	  	 	0.6328	  	 	0.4045	  	 	0.2966
	 September 15, 2010
	  	 	7.5300	  	 	6.8346	  	 	6.2179	  	 	4.9538	  	 	3.9930	  	 	3.2558	  	 	2.6823	  	 	2.2365	  	 	1.8879	  	 	1.3902	  	 	1.0679	  	 	0.4639	  	 	0.3021	  	 	0.2248
	 March 15, 2011
	  	 	7.5300	  	 	6.3879	  	 	5.7369	  	 	4.4183	  	 	3.4294	  	 	2.6884	  	 	2.1267	  	 	1.7053	  	 	1.3883	  	 	0.9596	  	 	0.7031	  	 	0.2972	  	 	0.2009	  	 	0.1518
	 September 15, 2011
	  	 	7.5300	  	 	5.9126	  	 	5.1960	  	 	3.7550	  	 	2.6957	  	 	1.9362	  	 	1.3917	  	 	1.0168	  	 	0.7583	  	 	0.4558	  	 	0.3105	  	 	0.1436	  	 	0.1019	  	 	0.0777
	 March 15, 2012 and thereafter
	  	 	7.5300	  	 	5.7572	  	 	4.9239	  	 	3.1057	  	 	1.5905	  	 	0.4377	  	 	0.0399	  	 	0.0042	  	 	0.0015	  	 	0.0011	  	 	0.0010	  	 	0.0005	  	 	0.0003	  	 	0.0002

 In no event will the Applicable Conversion Rate be increased pursuant to this Section 9.15 to
more than 22.6061 shares per $1,000 principal amount of Notes pursuant to the events described in this Section 9.15; provided that the Company shall adjust such maximum Applicable Conversion Rate for the same events for which the Company
must adjust the Base Conversion Price elsewhere in the Article 9, by the reciprocal of the adjustment factor applicable to the Base Conversion Price. 
 The Company hereby waives, to the fullest extent permitted by law, any right to raise a defense claiming that any such increase in the Applicable Conversion Rate would be a penalty. 
 If the Stock Price is between two Stock Prices in the table or the Effective Date is between two Effective Dates in the table, the number of Additional
Shares will be determined by straight-line interpolation between the number of Additional Shares set forth for the higher and lower Stock Prices and the two Effective Dates, as applicable, based on a 365-day year. If the Stock Price is in excess of
$250.00 per share (subject to adjustment as set forth herein), or if the Stock Price is less than $44.22 per share (subject to adjustment as set forth herein), no Additional Shares will be added to the Applicable Conversion Rate. 
 (d) The Company will notify Holders and the Trustee of the anticipated Effective Date of a Qualifying Fundamental Change and issue a press release as
soon as practicable after the Company first determines the anticipated Qualifying Fundamental Change Effective Date. 
 (e) Notwithstanding
the provisions of Section 9.03, if a Holder surrenders the Notes for conversion in connection with a Qualifying Fundamental Change, the Company will deliver the portion of the conversion consideration that is payable on account of the increase
in the Applicable Conversion Rate pursuant to this Section 9.15 as soon as practicable, but in no event after the third Business Day after the latest of (i) the date the Holder surrenders the Notes for conversion; (ii) the last
Trading Day in the applicable Conversion Settlement Averaging Period; or (iii) the Effective Date of the Qualifying Fundamental Change. 
 (f) If a Holder surrenders Notes in connection with a Qualifying Fundamental Change announced by the Company, but such Qualifying Fundamental Change is not consummated, then such Holder shall not be entitled to the increased Applicable
Conversion Rate pursuant to this Section 9.15. 
 (g) For the avoidance of doubt, the increases provided for in this Section 9.15
with respect to any Qualifying Fundamental Change shall only be made with respect to the Notes being converted in connection with such Qualifying Fundamental Change and shall not be effective as to any Notes not so converted. 
  

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 ARTICLE 10 
 PAYMENT OF INTEREST 
 Section 10.01 Payment of Interest. 
 (a) The Company shall pay interest on the Notes at a rate of 5.00% per annum, payable semi-annually in arrears on March 15 and September 15
of each year (each, an “Interest Payment Date”), commencing March 12, 2008. Interest shall be paid on each Interest Payment Date to the Holder of such Note in whose name the Note is registered at 5:00 p.m. (New York City time)
on March 1 or September 1 (whether or not a Business Day) (a “Record Date”), as the case may be, next preceding the related Interest Payment Date. Interest shall be computed on the basis of a 360-day year comprised of
twelve 30-day months. In the event of the maturity, conversion, or purchase of a Note by the Company at the option of the Holder, interest shall cease to accrue on such Note. Interest on the Notes shall accrue (except, in the case of Additional
Notes, as otherwise specified in the Company Order delivered pursuant to Section 1.04(b) of this Supplemental Indenture in respect thereof) from the most recent date to which interest has been paid or, if no interest has been paid, from the
date of issuance. 
 (b) Upon conversion of a Note, (i) a Holder shall not receive any Cash payment of interest (unless such conversion
occurs between a Record Date and the Interest Payment Date to which it relates) and (ii) except as set forth in clause (c) below, the Company’s delivery to a Holder of the full amount of Cash, shares of Common Stock or a combination
thereof, together with any Cash payment of fractional shares, shall be deemed to satisfy its obligation with respect to the principal amount of such Note, and any accrued but unpaid interest (including Additional Interest, if any). As a result,
accrued but unpaid interest (including Additional Interest, if any) up to but excluding the Conversion Date will be deemed to be paid in full rather than cancelled, extinguished or forfeited, and the Company will not adjust the Applicable Conversion
Rate for accrued and unpaid interest (including Additional Interest, if any). 
 (c) Holders of Notes at 5:00 p.m. (New York City time)
on a regular Record Date shall receive payment of interest payable on the corresponding Interest Payment Date, notwithstanding the conversion of such Notes at any time after 5:00 p.m. (New York City time) on the applicable regular Record Date.
If Notes are surrendered for conversion by a Holder after 5:00 p.m. (New York City time) on any Record Date but prior to 9:00 a.m. (New York City time) on the Interest Payment Date to which such Record Date relates, holders of such Notes
at 5:00 p.m. (New York City time) on the Record Date will receive an amount equal to the interest (including Additional Interest, if any) payable on the Notes on the corresponding Interest Payment Date notwithstanding the conversion. Such
Notes, upon surrender for conversion, must be accompanied by funds equal to the amount of interest (including Additional Interest, if any) payable on the Notes so converted on the corresponding Interest Payment Date. However, no such payment shall
be made: 
 (i) if such Notes have been called for redemption on a Redemption Date within the period between 5:00 p.m.
(New York City time) on such Record Date and 9:00 a.m. (New York City time) on such Interest Payment Date; 
 (ii) if the
Company has specified a Fundamental Change Purchase Date for a Fundamental Change that is during the period between 5:00 p.m. (New York City time) on such Record Date and 9:00 a.m. (New York City time) on such Interest Payment Date;

  

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 (iii) with respect to any such Notes surrendered for conversion after 5:00 p.m. (New
York City time) on the Record Date for the March 15, 2028 Interest Payment Date; or 
 (iv) only to the extent of any
overdue interest (including Additional Interest, if any) if overdue interest exists at the time of conversion with respect to such Note. 
 Section 10.02 Additional Interest. If an Event of Default relating to the failure of the Company to comply with Section 4.03 occurs, Holders shall receive additional interest on the Notes at an annual rate equal to 0.50% of
the aggregate principal amount of the Notes (the “Additional Interest”). Any such Additional Interest shall be payable in the same manner and on the same dates as the stated interest payable on the Notes. Additional Interest shall
accrue on all Outstanding Notes from and including the date on which such an Event of Default first occurs to, but not including, the 181st day thereafter (or, if applicable, the earlier date on which such Event of Default is cured or waived).

 Section 10.03 Defaulted Interest. Any installment of interest that is payable, but is not punctually paid or duly provided for
on any Interest Payment Date (“Defaulted Interest”) shall forthwith cease to be payable to the Holders in whose names the Notes were registered on the Record Date applicable to such installment of interest. The Company shall make
payment of any Defaulted Interest (including any interest on such Defaulted Interest) to the Holders in whose names the Notes are registered at 5:00 p.m. (New York City time) on a special record date for the payment of such Defaulted Interest (a
“Special Record Date”), which shall be fixed in the following manner. The Company shall notify the Trustee in writing of the amount of Defaulted Interest proposed to be paid and the date of the proposed payment, and at the same time
the Company shall deposit with the Trustee an amount of money equal to the aggregate amount proposed to be paid in respect of such Defaulted Interest or shall make arrangements satisfactory to the Trustee for such deposit prior to the date of the
proposed payment, such money when deposited to be held in trust for the benefit of the Holders entitled to such Defaulted Interest as provided in this Section 10.03. Thereupon the Trustee shall fix a Special Record Date for the payment of such
Defaulted Interest, which shall be not more than 15 calendar days and not less than ten calendar days prior to the date of the proposed payment and not less than ten calendar days after the receipt by the Trustee of the notice of the proposed
payment. The Trustee shall promptly notify the Company of such Special Record Date and, in the name and at the expense of the Company, shall cause notice of the proposed payment of such Defaulted Interest and the Special Record Date therefor to be
sent, by first-class mail, postage prepaid, to each Holder at such Holder’s address as it appears in the registration books of the Registrar, not less than ten calendar days prior to such Special Record Date. Notice of the proposed payment of
such Defaulted Interest and the Special Record Date therefor having been mailed as aforesaid, such Defaulted Interest shall be paid to the Holders in whose names the Notes are registered at 5:00 p.m. (New York City time) on such Special Record Date.

 Section 10.04 Interest Rights Preserved. Subject to the foregoing provisions of this Article 10, each Note delivered
under this Supplemental Indenture upon registration of transfer of or in exchange for or in lieu of any other Note shall carry the rights to interest accrued and unpaid, and to accrue, which were carried by such other Note. 
  

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 ARTICLE 11 
 SUBSIDIARY GUARANTEES 
 Section 11.01 Subsidiary Guarantees. If any Subsidiary incurs or
guarantees any Indebtedness other than Indebtedness under a Secured Credit Facility, which when combined with any other such Indebtedness for which such Subsidiary is an obligor or guarantor, is at least $10.0 million in aggregate principal amount,
then the Company shall cause such Subsidiary to become a Subsidiary Guarantor. In addition, if Subsidiaries that are not Subsidiary Guarantors, but that are obligors or guarantors under a Secured Credit Facility, own more than 15% of the
Company’s total consolidated assets, then the Company shall cause one or more Subsidiaries to become Subsidiary Guarantors so that, after giving effect thereto, Subsidiaries that are not Subsidiary Guarantors, but that are obligors or
guarantors under a Secured Credit Facility, do not own more than 15% of the Company’s total consolidated assets. If required to become a Subsidiary Guarantor pursuant to the immediately preceding two sentences, such Subsidiary shall:

 (a) execute and deliver to the Trustee a supplemental indenture containing the terms set forth in Exhibit B
attached hereto and otherwise in form reasonably satisfactory to the Trustee pursuant to which such Subsidiary shall unconditionally guarantee all of the Company’s obligations under the Notes and this Supplemental Indenture on the terms set
forth in this Article 11; and 
 (b) deliver to the Trustee an Opinion of Counsel that such supplemental indenture has
been duly authorized, executed, and delivered by such Subsidiary and constitutes a legal, valid, binding and enforceable obligation of such Subsidiary. 
 Thereafter, such Subsidiary shall be a Subsidiary Guarantor for all purposes of this Supplemental Indenture, subject to such Subsidiary ceasing to be a Subsidiary Guarantor when its Subsidiary Guarantee is released in accordance with the
terms of this Article 11. Each Subsidiary Guarantor will unconditionally guarantee, on a senior unsecured basis, jointly and severally, to each Holder of Notes and the Trustee, the full and prompt performance of the Company’s obligations
under this Supplemental Indenture and the Notes, including the payment of principal of and interest (including Additional Interest, if any) on the Notes (a “Subsidiary Guarantee”) in accordance with and subject to the terms and the
manner set forth in Exhibit B attached hereto. 
 Each Subsidiary Guarantor may consolidate with or merge into or sell its assets
to (i) the Company or another Subsidiary Guarantor without limitation; or (ii) any other Person if: 
 (a) the
successor Person, if any, is a corporation organized and existing under the laws of the United States, any state of the United States or the District of Columbia and assumes the Company’s obligations on the Notes and under this Supplemental
Indenture; 
 (b) immediately after giving effect to the transaction, no Default or Event of Default shall have occurred and
be continuing; 
 (c) such successor Person executes and delivers to the Trustee a supplemental indenture giving effect to
such assumption in form reasonably satisfactory to the Trustee; and 
 (d) such successor Person shall have delivered to the
Trustee an Officers’ Certificate and an Opinion of Counsel, each stating that such consolidation, merger, or sale and such supplemental indenture comply with this Article 11 and all conditions precedent herein provided for relating to such
transaction have been satisfied. 
  

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 Section 11.02 Release. The Subsidiary Guarantee of a Subsidiary Guarantor will be released:

 (1) in connection with any sale or other disposition of all or substantially all of the assets of that Subsidiary Guarantor
(including by way of merger or consolidation) to a Person that is not (either before or after giving effect to such transaction) the Company or a Subsidiary Guarantor, if neither the Company nor any other Person that (after giving effect to such
transaction and such release and any other related releases) is a Subsidiary Guarantor remains liable on the Indebtedness with respect to which the Subsidiary Guarantee was executed, or would have been executed pursuant to the first paragraph of
Section 11.01 had a Subsidiary Guarantee not been executed previously; 
 (2) in connection with any sale or other
disposition of all of the Capital Stock (or any sale or other disposition of Capital Stock following which such Subsidiary Guarantor is no longer a Subsidiary) of a Subsidiary Guarantor to a Person that is not (either before or after giving effect
to such transaction) the Company or a Subsidiary Guarantor, if neither the Company nor any other Person that (after giving effect to such transaction and such release and any other related releases) is a Subsidiary Guarantor remains liable on the
Indebtedness with respect to which the Subsidiary Guarantee was executed, or would have been executed pursuant to the first paragraph of Section 11.01 had a Subsidiary Guarantee not been executed previously; 
 (3) if the Company designates such Subsidiary Guarantor to be an “unrestricted subsidiary” (or like term) in accordance with the
applicable provisions of, and thereupon is not liable with respect to any Indebtedness under, any Secured Credit Facility or and any indenture governing debt securities in an aggregate principal amount in excess of $10.0 million for which the
Company or any Person that (after giving effect to such release and any related releases) is a Subsidiary Guarantor is an obligor or guarantor; 
 (4) upon satisfaction and discharge of the Notes pursuant to Section 7.01 hereto; 
 (5)
upon the full and final payment and performance of all of the Company’s obligations under the Notes; 
 (6) upon the
liquidation or dissolution of such Subsidiary Guarantor, provided no Default or Event of Default has occurred or is continuing; or 
 (7) at such time as, after giving effect to such release, (a) the Indebtedness (other than under a Secured Credit Facility) for which such Subsidiary Guarantor is an obligor or guarantor does not exceed $10.0
million in aggregate principal amount and (b) Subsidiaries that are not Subsidiary Guarantors but that are obligors or guarantors under a Secured Credit Facility do not own more than 15% of the Company’s total consolidated assets.

 ARTICLE 12 
 MISCELLANEOUS

 Section 12.01 Communication by Holders with Other Holders. Holders may communicate pursuant to TIA Section 312(b)
with other Holders with respect to their rights under this Supplemental Indenture or the Notes. The Company, the Trustee, the Registrar, the Paying Agent, the Conversion Agent and anyone else shall have the protection of TIA Section 312(c).

  

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 Section 12.02 Certificate and Opinion as to Conditions Precedent. Upon any request or
application by the Company to the Trustee to take any action under this Supplemental Indenture, the Company shall furnish to the Trustee: 
 (a) an Officers’ Certificate stating that, in the opinion of the signers, all conditions precedent, if any, provided for in this Supplemental Indenture relating to the proposed action have been complied with; and

 (b) if required by the Trustee, an Opinion of Counsel stating that, in the opinion of such counsel, all such conditions
precedent (to the extent of legal conclusions) have been complied with. 
 Section 12.03 Statements Required in Certificate or
Opinion. Each Officers’ Certificate or Opinion of Counsel with respect to compliance with a covenant or condition provided for in this Supplemental Indenture shall include: (i) a statement that each Person making such Officers’
Certificate or Opinion of Counsel has read such covenant or condition; (ii) a brief statement as to the nature and scope of the examination or investigation upon which the statements or opinions contained in such Officers’ Certificate or
Opinion of Counsel are based; (iii) a statement that, in the opinion of each such Person, he or she has made such examination or investigation as is necessary to enable such Person to express an informed opinion as to whether or not such
covenant or condition has been complied with; and (iv) a statement that, in the opinion of such Person, such covenant or condition has been complied with. 
 Section 12.04 Separability Clause. In case any provision in this Supplemental Indenture or in the Notes shall be invalid, illegal or unenforceable, the validity, legality and enforceability of the
remaining provisions shall not in any way be affected or impaired thereby. 
 Section 12.05 Governing Law. THIS SUPPLEMENTAL
INDENTURE AND THE NOTES SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK BUT WITHOUT GIVING EFFECT TO APPLICABLE PRINCIPLES OF CONFLICTS OF LAW TO THE EXTENT THAT THE APPLICATION OF THE LAWS OF ANOTHER
JURISDICTION WOULD BE REQUIRED THEREBY. 
 Section 12.06 Submission to Jurisdiction; No Liability for Certain Persons.

 (a) The parties hereby submit to the non-exclusive jurisdiction of any United States Federal or New York State court sitting in the Borough
of Manhattan in the City of New York solely for the purpose of any legal action or proceeding brought to enforce their obligations hereunder or with respect to any Note. 
 (b) An incorporator or any past, present or future director, officer, employee or stockholder, as such, of the Company shall not have any liability for any obligations of the Company under the Notes or this
Supplemental Indenture or for any claim based on, in respect of or by reason of such obligations or their creation. By accepting a Note, each Holder shall waive and release all such liability. The waiver and release shall be part of the
consideration for the issue of the Notes. 
  

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 Section 12.07 Patriot Act. The parties hereto acknowledge that in accordance with
Section 326 of the USA Patriot Act, Deutsche Bank Trust Company Americas, like all financial institutions and in order to help fight the funding of terrorism and money laundering, is required to obtain, verify, and record information that
identifies each Person or legal entity that establishes a relationship or opens an account. The parties to this Supplemental Indenture agree that they will provide Deutsche Bank Trust Company Americas with such information as it may request in order
for Deutsche Bank Trust Company Americas to satisfy the requirements of the USA Patriot Act. 
 Section 12.08 Successors. All
agreements of the Company in this Supplemental Indenture and the Notes shall bind its successor. All agreements of the Trustee in this Supplemental Indenture shall bind its successor. 
 Section 12.09 Table of Contents; Headings. The table of contents and headings of the Articles and Sections of this Supplemental Indenture
have been inserted for convenience of reference only, are not intended to be considered a part hereof and shall not modify or restrict any of the terms or provisions hereof. 
 Section 12.10 Multiple Originals. The parties may sign any number of copies of this Supplemental Indenture. Each signed copy shall be an
original, but all of them together shall represent the same agreement. One signed copy is sufficient to prove this Supplemental Indenture. 
 Section 12.11 Scope of Supplemental Indenture. The changes, modifications and supplements to the Base Indenture affected by this Supplemental Indenture shall be applicable only with respect to, and shall only govern the terms
of, and shall be deemed expressly included in the Indenture solely for the benefit of, the Notes which may be issued from time to time, and shall not apply to any other Debt Securities that may be issued under the Base Indenture unless a
supplemental indenture with respect to such other Debt Securities specifically incorporates such changes, modifications and supplements. 
 Section 12.12 Ratification and Incorporation of Base Indenture. (a) As supplemented hereby, the Base Indenture is in all respects ratified and confirmed, and the Base Indenture and this Supplemental Indenture shall be read,
taken and construed as one and the same instrument. This Supplemental Indenture shall form a part of the Indenture for all purposes, and every Holder of Notes shall be bound hereby. 
 Section 12.13 No Security Interest Created. Nothing in this Supplemental Indenture or in the Notes, expressed or implied, shall be construed
to constitute a security interest under the Uniform Commercial Code or similar legislation, as now or hereafter enacted and in effect, in any jurisdiction 
 Section 12.14 Trust Indenture Act. This Supplemental Indenture is hereby made subject to, and shall be governed by, the provisions of the Trust Indenture Act required to be part of and to govern indentures
qualified under the Trust Indenture Act. If any provision hereof limits, qualifies or conflicts with another provision hereof that is required to be included in an indenture qualified under the Trust Indenture Act, such required provisions shall
control. 
 Section 12.15 Covenants Not Applicable. In accordance with Section 2.05(s), Section 9.01(b) and
Section 9.01(i) of the Base Indenture, (i) except as, and to the extent, described herein, the covenants and agreements on the part of the Company in Article III, Article VI, Article IX, Article X and Article XI and Sections 4.01,
Section 4.02, Section 4.05, Section 4.06(b), Section 4.08, Section 

  

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4.09, Section 4.10, Section 4.11 and Section 4.12 of the Base Indenture are hereby eliminated from the Base Indenture in respect of, and shall
not apply to, and shall be deemed covenants included in the Indenture solely for the benefit of a different series of Debt Securities than, the Notes; and (ii) no Default or Event of Default with respect to the Notes shall arise, or be deemed
to exist as the result of any failure on the part of the Company duly to observe or perform any of such covenants or agreements. 
 Section 12.16 Calculations. Except as otherwise provided herein, the Company will be responsible for making all calculations called for under this Supplemental Indenture and the Notes (including any determinations of the Closing
Sale Price of the Common Stock, the Stock Price, Volume Weighted Average Price, Trading Price, accrued interest and the Applicable Conversion Rate). The Company shall make all such calculations in good faith and, absent manifest error, its
calculations will be final and binding on Noteholders. The Company upon request shall provide a schedule of its calculations to each of the Trustee and the Conversion Agent, and each of the Trustee and Conversion Agent is entitled to rely
conclusively upon the accuracy of the Company’s calculations without independent verification. The Trustee shall deliver a copy of such schedule to any Noteholder upon the written request of such Noteholder. 
  

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 IN WITNESS WHEREOF, BILL BARRETT CORPORATION has caused this Supplemental Indenture to be duly executed
as a deed the day and year first before written. 
  

			
	BILL BARRETT CORPORATION
		
	By:	 	 /s/ ROBERT W. HOWARD

		 	Robert W. Howard
		 	Chief Financial Officer and Treasurer

  

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 IN WITNESS WHEREOF, the undersigned, being duly authorized, has executed this Supplemental Indenture as
of the date first above written. 
  

			
	DEUTSCHE BANK TRUST COMPANY AMERICAS, as Trustee
		
	By:	 	 /s/ WANDA CAMACHO

		 	Wanda Camacho
		 	Vice President
		
	By:	 	 /s/ ANNIE JAGHATSPANYAN

		 	Annie Jaghatspanyan
		 	Assistant Vice President

  

 -60- 

 EXHIBIT A — FORM OF NOTE 
 [FORM OF FACE OF NOTE] 
 [UNLESS THIS SECURITY IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY,
A NEW YORK CORPORATION, TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY SECURITY ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE
DEPOSITORY TRUST COMPANY (AND ANY PAYMENT 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 ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.] 
  

 A-1 

 BILL BARRETT CORPORATION 
 No.        $ 
 CUSIP No. 
 BILL BARRETT CORPORATION, a Delaware corporation (herein called the “Company”, which term includes any successor corporation under the
Indenture hereinafter referred to), for value received, hereby promises to pay to [                    ], or registered assigns, the principal sum of
[            ] Dollars $[            ] on March 15, 2028, and to pay interest thereon from March 12, 2008 or from the
most recent Interest Payment Date to which interest has been paid or duly provided for, semi-annually on March 15 and September 15 of each year, commencing September 15, 2008, at the rate of 5.00% per annum, until the principal
hereof is paid or made available for payment. The interest so payable, and punctually paid or duly provided for, on any Interest Payment Date will, as provided in such Supplemental Indenture, be paid to the Person in whose name this Note is
registered at 5:00 p.m. (New York City time) on the Record Date for such interest, which shall be the March 1 or September 1 (whether or not a Business Day), as the case may be, next preceding such Interest Payment Date. Any such interest
not so punctually paid or duly provided for will forthwith cease to be payable to the Holder on such regular Record Date and will be paid to the Person in whose name this Note is registered at 5:00 p.m. (New York City time) on a Special Record Date
for the payment of such Defaulted Interest to be fixed by the Trustee, notice whereof shall be given to Holders of Notes not less than 10 days prior to such Special Record Date. 
 Payment of the principal of and interest on this Note shall be made in such coin or currency of the United States of America as at the time of payment is
legal tender for payment of public and private debts. 
 Reference is hereby made to the further provisions of this Note 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 Trustee referred to on the reverse hereof by manual
signature, this Note shall not be entitled to any benefit under the Indenture or be valid or obligatory for any purpose. 
 IN WITNESS
WHEREOF, the Company has caused this instrument to be duly executed. 
 [Remainder of Page Left Intentionally Blank] 
  

 A-2 

 IN WITNESS WHEREOF, Bill Barrett Corporation has caused this instrument to be duly executed. 

 

			
	BILL BARRETT CORPORATION
		
	By:	 	  

	Name:	 	
	Title:	 	
		
	By:	 	  

	Name:	 	
	Title:	 	

 Dated: 
 TRUSTEE’S CERTIFICATE OF AUTHENTICATION 
 This is one of the Notes referred to in the within-mentioned Indenture.

  

			
	DEUTSCHE BANK TRUST COMPANY AMERICAS
		
	By:	 	  

	Name:	 	
	Title:	 	

  

 A-3 

 Additional Terms of the Notes 
 5.00% Convertible Senior Note due 2028 
 Bill Barrett Corporation a corporation
organized under the laws of Delaware (such corporation, and its successors and assigns under the Indenture hereinafter referred to, being herein called the “Company”), issued this Note under an Indenture, dated as of March 12,
2008 (as it may be amended or supplemented from time to time (including by the Supplemental Indenture referred to below) in accordance with the terms thereof, the “Indenture”), between the Company and Deutsche Bank Trust Company
Americas, as Trustee, as supplemented by the First Supplemental Indenture thereto dated as of March 12, 2008 (the “Supplemental Indenture”) to which reference is hereby made for a statement of the respective rights,
obligations, duties and immunities thereunder of the Trustee, the Company and the Holders and of the terms upon which the Notes are, and are to be, authorized and delivered. The terms of the Notes include those stated in the Indenture and those made
part of the Indenture by reference to the Trust Indenture Act of 1939 (15 U.S.C. §§ 77aaa-77bbbb) as in effect on the date of the Indenture (the “TIA”). Terms defined in the Indenture and not defined herein have the
meanings ascribed thereto in the Indenture. The Notes are subject to all such terms, and Holders are referred to the Indenture and the TIA for a statement of those terms. This Note is one of the Notes referred to in the Indenture initially issued in
an aggregate principal amount of ONE HUNDRED AND SEVENTY-TWO MILLION FIVE HUNDRED THOUSAND DOLLARS ($172,500,000). 
  

	1.	Further Provisions Relating to Interest 

 Additional
Interest. The Holder of this Note shall be entitled to receive Additional Interest as and to the extent provided in the Indenture. 
  

	2.	Method of Payment 

 The Company will pay interest on
the Notes to the Persons who are registered Holders of Notes at 5:00 p.m. (New York City time) on the Record Date with respect to the applicable Interest Payment Date even if Notes are canceled after the Record Date and on or before the Interest
Payment Date, except as otherwise provided in the Indenture. Holders must surrender Notes to a Paying Agent to collect principal payments. The Company will pay principal and interest (including Additional Interest, if any) in money of the United
States of America that at the time of payment is legal tender for payment of public and private debts. 
 The Place of Payment where the
principal of and any other payments due on the Notes are payable shall initially be at the office or agency of the Company maintained for that purpose in New York, New York in accordance with Section 4.02 of this Supplemental Indenture.

 The Company shall pay interest (a) on any Notes in certificated form by check mailed to the address of the Person entitled thereto as
it appears in the Debt Security Register (or upon written application by such Person to the Trustee and Paying Agent (if different from the Trustee) not later than the relevant Record Date, by wire transfer in immediately available funds to such
Person’s account within the United States, if such Person is entitled to interest on an aggregate principal in excess of $1,000,000, which application shall remain in effect until the Noteholder notifies the Trustee and Paying Agent to the
contrary) or (b) on any Global Note by wire transfer of immediately available funds to the account of the Depositary or its nominee. 
  

 A-4 

	3.	Paying Agent and Registrar 

 Initially, Deutsche
Bank Trust Company Americas (the “Trustee”) will act as Paying Agent, Registrar and Conversion Agent. The Company may appoint and change any Paying Agent, Registrar or co-registrar or Conversion Agent without notice. The Company or
any of its domestically organized Wholly Owned Subsidiaries may act as Paying Agent or Registrar or co-registrar. 
  

	4.	Ranking 

 The Notes are senior unsecured obligations
of the Company and rank equal in right of payment to all of the Company’s existing senior unsecured debt and senior to all of the Company’s future subordinated debt. 
  

	5.	Redemption 

 The Notes will not be subject to
redemption prior to March 26, 2012. On or after March 26, 2012, the Company shall have the right to redeem the Notes, in whole or in part, at any time or from time to time for a Cash Redemption Price, as described in the Indenture, plus
any accrued and unpaid interest (including Additional Interest, if any) thereon up to, but not including, the Redemption Date. 
 If the
Redemption Date is on a date that is after a Record Date and on or prior to the corresponding Interest Payment Date, the Company shall pay the related interest (including Additional Interest, if any) to a Holder on such regular Record Date.

  

	6.	Purchase at the Option of the Holder 

 Pursuant to
Section 3.07 of the Supplemental Indenture, the Notes, in whole or in part, shall be purchased by the Company at the option of the Holder on March 20, 2012, March 20, 2015, March 20, 2018 or March 20, 2023, in U.S.
legal tender (“Cash”) equal to 100% of the principal amount of Notes to be purchased plus accrued and unpaid interest, if any (including Additional Interest, if any), thereon to, but excluding, the Purchase Date. No Notes may be
purchased by the Company at the option of Holders if the principal amount of the Notes has been accelerated, and such acceleration has not been rescinded, on or prior to the Purchase Date. 
 Any Holder delivering to the Paying Agent a Purchase Notice may convert Notes if such Holder withdraws such Purchase Notice prior to 5:00 p.m. (New York
City time) on the Business Day prior to the Purchase Date and thereupon exercises such Holder’s rights of conversion in respect of such Notes pursuant to Paragraph 8 below. If the Purchase Notice is withdrawn pursuant to Section 3.09 of
the Indenture, the Company will not be obligated to purchase the related Notes. 
  

	7.	Purchase at the Option of Holders Upon a Fundamental Change 

 Pursuant to Section 3.08 of the Supplemental Indenture, if a Fundamental Change occurs at any time that the Notes remain Outstanding, the Notes shall be purchased by the Company, in whole or in part, at the option of the Holder
thereof, as of the date that is 30 Business Days after the occurrence of the Fundamental Change, such date being referred to as “the Fundamental Change Purchase Date,” at a purchase price equal to 100% of the principal amount plus, accrued
and unpaid interest, if any (including Additional Interest, if any) to, but excluding, the Fundamental Change Purchase Date. No Notes may be purchased by the Company at the option of Holders upon a Fundamental Change if the principal amount of the
Notes has been accelerated, and such acceleration has not been rescinded, on or prior to Fundamental Change Purchase Date. 
  

 A-5 

 Any Holder delivering to the Paying Agent a Fundamental Change Purchase Notice may convert Notes if such
Holder withdraws such Fundamental Change Purchase Notice prior to 5:00 p.m. (New York City time) on the second scheduled Trading Day prior to the Fundamental Change Purchase Date below and thereupon exercises such Holder’s rights of conversion
in respect of such Notes pursuant to Paragraph 8 below. If the Purchase Notice is withdrawn pursuant to Section 3.09 of the Indenture, the Company will not be obligated to purchase the related Notes. 
  

	8.	Conversion 

 Subject to and upon compliance with the
provisions of the Indenture, this Note or any part hereof equal to $1,000 or any integral multiple thereof in excess of $1,000 may be converted by a Holder into, at the Company’s election, Cash, shares of Common Stock or a combination thereof;
provided, however, that this Note may be converted only during the periods and under the conditions specified in the Indenture. The Settlement Amount deliverable upon any such conversion shall be as described in Section 9.02 of
the Supplemental Indenture. 
  

	9.	Denominations, Transfer, Exchange 

 The Notes are
issuable in registered form without coupons in denominations of $1,000 and any integral multiple thereof. A Holder of this Note may transfer or exchange Notes in accordance with the Indenture. Upon any transfer or exchange, the Registrar and the
Trustee may require a Holder of this Note, among other things, to furnish appropriate endorsements or transfer documents and to pay any taxes required by law or permitted by the Indenture. 
  

	10.	Persons Deemed Owners 

 The registered Holder of
this Note may be treated as the owner of it for all purposes. 
  

	11.	Unclaimed Money 

 Subject to any applicable
abandoned property law, the Trustee and the Paying Agent shall pay to the Company upon request any money held by them for the payment of principal or interest that remains unclaimed for two years, and, thereafter, Holders entitled to the money must
look to the Company for payment as general creditors. 
  

	12.	Amendment, Waiver 

 Subject to certain exceptions
set forth in the Supplemental Indenture, (i) the Indenture or the Notes may be amended for the purpose of adding any provisions to or changing in any manner or eliminating any of the provisions of the Notes or the Indenture (including the
Supplemental Indenture) or of any supplemental indenture to the Indenture or of modifying in any manner the rights of the Holders of the Notes without prior notice to any Holder but with the written consent of the Holders of at least a majority in
aggregate principal amount of the Outstanding Notes and (ii) any Default or Event of Default may be waived by Notice to the Trustee by the Holders of at least a majority in aggregate principal amount of the Outstanding Notes. In certain
circumstances set forth in the Supplemental Indenture, the Company and the Trustee may amend or supplement the Indenture or the Notes without the consent of any Holder. 
  

 A-6 

	13.	Defaults and Remedies 

 If an Event of Default
(other than an Event of Default specified in Section 6.01(ix) or Section 6.01(x) of the Supplemental Indenture with respect to the Company) occurs and is continuing, the Trustee or the Holders of at least 25% in aggregate principal amount
of the Notes then Outstanding may declare the principal of and accrued but unpaid interest, if any (including Additional Interest, if any) on all the Outstanding Notes to be immediately due and payable, except as provided in the Supplemental
Indenture. If an Event of Default specified in Section 6.01(ix) or Section 6.01(x) of the Supplemental Indenture occurs and is continuing with respect to the Company, the principal of and accrued and unpaid interest, if any (including
Additional Interest, if any), on all the Notes then Outstanding, will, automatically and without any action by the Trustee or any Holder, become and be immediately due and payable. Under certain circumstances, the Holders of a majority in aggregate
principal amount of the Outstanding Notes may rescind any such declaration with respect to the Notes and its consequences. No reference herein to the Indenture or the Supplemental Indenture and no provision of this Note or of the Indenture or the
Supplemental Indenture shall impair, as among the Company and the Holder of the Notes, the obligation of the Company, which is absolute and unconditional, to pay the principal of and interest (including Additional Interest, if any) on this Note at
the place, at the respective times, at the rate and in the coin or currency herein and in the Indenture prescribed or to convert the Note as provided in the Indenture. 
 Notwithstanding the foregoing, the sole remedy under the Indenture for an Event of Default relating to the failure of the Company to comply with Section 4.03 of the Supplemental Indenture in respect of certain
reporting obligations for the 180 days after the occurrence of such an Event of Default shall consist exclusively of the right to receive Additional Interest in accordance with Section 10.02 of the Supplemental Indenture to, but not including,
the 181st day thereafter (or, if applicable, the earlier date on which the Event of Default relating to the reporting obligations is cured or waived) as provided in Section 10.02 of the Supplemental Indenture. If the Event of Default is
continuing on the 181st day after an Event of Default relating to a failure to comply with Section 4.03 of the Supplemental Indenture occurs, the Notes will be subject to acceleration as provided in Section 6.02(a) of the Supplemental
Indenture. 
  

	14.	Trustee Dealings with the Company 

 Subject to
certain limitations imposed by the TIA, the Trustee under the Indenture, in its individual or any other capacity, may become the owner or pledgee of Notes and may otherwise deal with the Company or its Affiliates with the same rights it would have
if it were not Trustee. 
  

	15.	Indenture and Notes Solely Corporate Obligations 

 No recourse for the payment of the principal of or interest on any Notes or for any claim based upon any Notes or otherwise in respect thereof, and no recourse under or upon any obligation, covenant or agreement of the Company in the
Indenture or in any supplemental indenture or in any Notes or because of the creation of any indebtedness represented thereby shall be had against any incorporator, stockholder, member, manager, employee, agent, officer, director or subsidiary, as
such, past, present or future, of the Company or any of the Company’s subsidiaries or of any successor thereto, either directly or through the Company or any of the Company’s subsidiaries or any successor thereto, whether by virtue of any
constitution, statute or rule of law, or by the enforcement 

  

 A-7 

 
of any assessment or penalty or otherwise; it being expressly understood that all such liability is hereby expressly waived and released as a condition of,
and as a consideration for, the execution of the Indenture and the issue of the Notes. 
  

	16.	Authentication 

 This Note shall not be valid until
an authorized signatory of the Trustee manually signs the certificate of authentication on the face of this Note. 
  

	17.	Abbreviations 

 Customary abbreviations may be used
in the name of a Holder or an assignee, such as TEN COM (= tenants in common), TEN ENT (= tenants by the entireties), JT TEN (= joint tenants with rights of Minors Act). 
  

	18.	GOVERNING LAW 

 THIS NOTE SHALL BE GOVERNED BY, AND
CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK BUT WITHOUT GIVING EFFECT TO APPLICABLE PRINCIPLES OF CONFLICTS OF LAW TO THE EXTENT THAT THE APPLICATION OF THE LAWS OF ANOTHER JURISDICTION WOULD BE REQUIRED THEREBY. 
  

	19.	CUSIP Number 

 Pursuant to a recommendation
promulgated by the Committee on Uniform Note Identification Procedures, the Company has caused a CUSIP number to be printed on the Notes and has directed the Trustee to use CUSIP numbers in all notices issued to Holders of this Note as a convenience
to such Holders. No representation is made as to the accuracy of such numbers either as printed on the Notes or as contained in any such notice and reliance may be placed only on the other identification numbers placed thereon. 
 The Company will furnish to any Holder of Notes upon written request and without charge to the Holder a copy of the Indenture. 
  

 A-8 

 FORM OF NOTICE OF CONVERSION 
  

	TO:	BILL BARRETT CORPORATION and DEUTSCHE BANK TRUST COMPANY AMERICAS, as Conversion Agent 

 The undersigned registered owner of this Note hereby irrevocably exercises the option to convert this Note, or the portion thereof (which is $1,000 or a multiple thereof) below designated, in accordance with the terms
of the Indenture referred to in this Note, and directs that the check in payment for Cash and/or the shares of Common Stock, as the case may be, issuable and deliverable upon such conversion, and any Cash deliverable upon conversion in lieu of
fractional shares and any Notes representing any unconverted principal amount hereof, be issued and delivered to the registered Holder hereof unless a different name has been indicated below. Capitalized terms used herein but not defined shall have
the meanings ascribed to such terms in the Indenture. If shares or any portion of this Note not converted are to be issued in the name of a Person other than the undersigned, the undersigned will provide the appropriate information below and pay all
taxes or duties payable with respect thereto. Any amount required to be paid by the undersigned on account of interest accompanies this Note. 
 Dated:
                                        

  

	
	  

	
	  

	Signature(s)
	
	Signature(s) must be guaranteed by an “eligible guarantor institution” meeting the requirements of the Registrar, which requirements include membership or participation in the Note
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.
	
	  

	Signature Guarantee

  

 A-9 

 Fill in the registration of shares of Common Stock, if any, if to be issued, and Notes if to be
delivered, and the Person to whom Cash, if any, and payment in Cash for fractional shares is to be made, if to be made, other than to and in the name of the registered Holder: 
 Please print name and address 
  

					
	(Name)	 		 	  

	(Street Address)	 		 	  

	(City, State and Zip Code)	 		 	  

		 		 	  

	Principal amount to be converted (if less than all):	 		 	 $

	Social Security or Other Taxpayer	 		 	
	Identification Number:	 		 	  

 NOTICE: The signature on this Conversion Notice must correspond with the name as written upon the face of the
Notes in every particular without alteration or enlargement or any change whatever. 
  

 A-2 

 FORM OF REPURCHASE NOTICE 
  

	TO:	BILL BARRETT CORPORATION and DEUTSCHE BANK TRUST COMPANY AMERICAS, as Conversion Agent 

 The undersigned registered owner of this Note hereby irrevocably acknowledges receipt of a notice from Bill Barrett Corporation (the “Company”) regarding the right of Holders to elect to require the
Company to purchase the Notes and requests and instructs the Company to repay the entire principal amount of this Note, or the portion thereof (which is $1,000 or an integral multiple thereof) below designated, in accordance with the terms of the
Indenture at the price of 100% of such entire principal amount or portion thereof, together with accrued and unpaid interest, if any, (including Additional Interest, if any) to, but excluding, the Purchase Date to the registered Holder hereof.
Capitalized terms used herein but not defined shall have the meanings ascribed to such terms in the Indenture. The Notes shall be purchased by the Company as of the Purchase Date pursuant to the terms and conditions specified in the Indenture.

 Dated:
                                        

  

	
	  

	
	  

	Signature(s)

 NOTICE: The above signatures of the Holder(s) hereof must correspond with the name as written upon the face
of the Notes in every particular without alteration or enlargement or any change whatever. 
 Notes Certificate Number (if applicable):
                     
 Principal amount to be
purchased 
 (if less than all, must be $1,000 or whole multiples thereof):
                     
 Social Security or Other
Taxpayer Identification Number:                      
  

 A-3 

 FORM OF FUNDAMENTAL CHANGE REPURCHASE NOTICE 
  

	TO:	BILL BARRETT CORPORATION and DEUTSCHE BANK TRUST COMPANY AMERICAS, as Conversion Agent 

 The undersigned registered owner of this Note hereby irrevocably acknowledges receipt of a notice from Bill Barrett Corporation (the “Company”) regarding the right of Holders to elect to require the
Company to purchase the Notes and requests and instructs the Company to repay the entire principal amount of this Note, or the portion thereof (which is $1,000 or an integral multiple thereof) below designated, in accordance with the terms of the
Indenture at the price of 100% of such entire principal amount or portion thereof, together with accrued and unpaid interest, if any, (including Additional Interest, if any) to, but excluding, the Fundamental Change Purchase Date to the registered
Holder hereof. Capitalized terms used herein but not defined shall have the meanings ascribed to such terms in the Indenture. The Notes shall be purchased by the Company as of the Fundamental Change Purchase Date pursuant to the terms and conditions
specified in the Indenture. 
 Dated:
                                        

  

	
	  

	
	  

	Signature(s)

 NOTICE: The above signatures of the Holder(s) hereof must correspond with the name as written upon the face
of the Notes in every particular without alteration or enlargement or any change whatever. 
 Notes Certificate Number (if applicable):
                     
 Principal amount to be
purchased 
 (if less than all, must be $1,000 or whole multiples thereof):
                     
 Social Security or Other
Taxpayer Identification Number:                      
  

 A-4 

 FORM OF ASSIGNMENT AND TRANSFER 
 For value received
                                 hereby sell(s), assign(s) and transfer(s) unto
                                 (Please insert social security or other Taxpayer
Identification Number of assignee) the within Notes, and hereby irrevocably constitutes and appoints
                                 attorney to transfer said Notes on the books of
the Company, with full power of substitution in the premises. 
 Dated:                                  
  

	
	  

	  

	Signature(s)
	
	Signature(s) must be guaranteed by an “eligible guarantor institution” meeting the requirements of the Registrar, which requirements include membership or participation in the Note
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.
	
	  

	Signature Guarantee

 NOTICE: The signature on this Assignment must correspond with the name as written upon the face of the Notes
in every particular without alteration or enlargement or any change whatever. 
  

 A-5 

 EXHIBIT B - SUBSIDIARY GUARANTEE PROVISIONS 
 Section 1.01 The Guarantee. The Guarantor hereby jointly and severally with each of the other Subsidiary Guarantors (if any) guarantees, as a
primary obligor and not as a surety, to the Trustee and each Holder and their respective successors and assigns, the prompt payment in full when due (whether at Stated Maturity, by required prepayment, declaration, demand, by acceleration or
otherwise) of the principal of and interest (including Additional Interest, if any, and any interest, fees, costs or charges that would accrue but for the provisions of Title 11 of the United States Code after any bankruptcy or insolvency
petition under Title 11 of the United States Code) on the Notes, and all other obligations from time to time owing to the Trustee and the Holders by the Company under the Indenture and the Notes, in each case strictly in accordance with the
terms thereof (such obligations being herein collectively called the “Guaranteed Obligations”). The Subsidiary Guarantor jointly and severally with each of the Subsidiary Guarantors (if any) agrees that if the Company shall fail to
pay in full when due (whether at stated maturity, by acceleration or otherwise) any of the Guaranteed Obligations, the Subsidiary Guarantor will promptly pay the same in cash, without any demand or notice whatsoever, and that in the case of any
extension of time of payment or renewal of any of the Guaranteed Obligations, the same will be promptly paid in full when due (whether at extended maturity, by acceleration or otherwise) in accordance with the terms of such extension or renewal.

 Section 1.02 Obligations Unconditional. The obligations of the Guarantor under Section 1.01 shall constitute a guaranty
of payment and to the fullest extent permitted by applicable law, are absolute, irrevocable and unconditional, joint and several with each of the Subsidiary Guarantors (if any), irrespective of the value, genuineness, validity, regularity or
enforceability of the Guaranteed Obligations, or any substitution, release or exchange of any other guarantee of or security for any of the Guaranteed Obligations, and irrespective of any other circumstance whatsoever that might otherwise constitute
a legal or equitable discharge or defense of a surety or guarantor (except for payment in full). Without limiting the generality of the foregoing, it is agreed that the occurrence of any one or more of the following shall not alter or impair the
liability of the Subsidiary Guarantor hereunder, which shall remain absolute, irrevocable and unconditional under any and all circumstances as described above: 
 (i) at any time or from time to time, without notice to the Subsidiary Guarantor, the time for any performance of or compliance with any
of the Guaranteed Obligations shall be extended, or such performance or compliance shall be waived; 
 (ii) any of the acts
mentioned in any of the provisions of this Subsidiary Guarantee or the Notes, if any, or any other agreement or instrument referred to herein or therein shall be done or omitted; 
 (iii) the maturity of any of the Guaranteed Obligations shall be accelerated, or any of the Guaranteed Obligations shall be amended in any
respect, or any right under the Indenture or any other agreement or instrument referred to herein or therein shall be amended or waived in any respect or any other guarantee of any of the Guaranteed Obligations or any security therefor shall be
released or exchanged in whole or in part or otherwise dealt with; or 
 (iv) the release of any other Subsidiary Guarantor
pursuant to the Supplemental Indenture. 
 The Subsidiary Guarantor hereby expressly waives diligence, presentment, demand of payment,
protest and all notices whatsoever, and any requirement that the Trustee or any Holder exhaust any right, power or remedy or proceed against the Company or any other Subsidiary Guarantor under the Indenture or the Notes or a Subsidiary Guarantee, if
any, or any other agreement or instrument referred to herein or therein, or against any other Person under any other guarantee of, or security for, any of the 

 
Guaranteed Obligations. The Subsidiary Guarantor waives any and all notice of the creation, renewal, extension, waiver, termination or accrual or any of the
Guaranteed Obligations and notice of or proof of reliance by the Trustee or any Holder upon this Subsidiary Guarantee or acceptance of this Subsidiary Guarantee, and the Guaranteed Obligations, and any of them, shall conclusively be deemed to have
been created, contracted or incurred in reliance upon this Subsidiary Guarantee, and all dealings between the Company and the Trustee or any Holder shall likewise be conclusively presumed to have been had or consummated in reliance upon this
Subsidiary Guarantee. This Subsidiary Guarantee shall be construed as a continuing, absolute, irrevocable and unconditional guarantee of payment without regard to any right of offset with respect to the Guaranteed Obligations at any time or from
time to time held by the Trustee or any Holder, and the obligations and liabilities of the Subsidiary Guarantor hereunder shall not be conditioned or contingent upon the pursuit by the Trustee or any Holder or any other Person at any time of any
right or remedy against the Company, any other Subsidiary Guarantor or any other Person which may be or become liable in respect of all or any part of the Guaranteed Obligations or against any collateral security or guarantee therefor or right of
offset with respect thereto. This Subsidiary Guarantee shall remain in full force and effect and be binding in accordance with and to the extent of its terms upon the Subsidiary Guarantor and the successors and assigns thereof, and shall inure to
the benefit of the Trustee and the Holders, and their respective successors and assigns. 
 Section 1.03 Reinstatement. The
obligations of the Subsidiary Guarantor hereunder shall be automatically reinstated if and to the extent that for any reason any payment by or on behalf of the Company in respect of the Guaranteed Obligations is rescinded or must be otherwise
restored by any holder of any of the Guaranteed Obligations, whether as a result of any proceedings in bankruptcy or reorganization or otherwise. 
 Section 1.04 Subrogation; Subordination. The Subsidiary Guarantor hereby agrees that until the indefeasible payment and satisfaction in full in cash of all Guaranteed Obligations, it shall waive any claim and shall not exercise
any right or remedy, direct or indirect, arising by reason of any performance by it of its guarantee in Section 1.01, whether by subrogation or otherwise, against the Company or any other Subsidiary Guarantor or any security for any of the
Guaranteed Obligations. 
 Section 1.05 Remedies. The Subsidiary Guarantor jointly and severally with each of the other
Subsidiary Guarantors (if any) agrees that, as between the Subsidiary Guarantor and the Trustee or any Holder, the obligations of the Company under the Indenture and the Notes may be declared to be forthwith due and payable as provided in the
Supplemental Indenture (and shall be deemed to have become automatically due and payable in the circumstances provided in the Supplemental Indenture) for purposes of Section 1.01, notwithstanding any stay, injunction or other prohibition
preventing such declaration (or such obligations from becoming automatically due and payable) as against the Company and that, in the event of such declaration (or such obligations being deemed to have become automatically due and payable), such
obligations (whether or not due and payable by the Company) shall forthwith become due and payable by the Subsidiary Guarantor for purposes of Section 1.01. 
 Section 1.06 Instrument for the Payment of Money. The Subsidiary Guarantor hereby acknowledges that the guarantee in this Subsidiary Guarantee constitutes an instrument for the payment of money, and
consents and agrees that the Trustee or (if permitted by the Supplemental Indenture) any Holder shall have the right to bring a motion-action under New York CPLR Section 3213. 
 Section 1.07 Continuing Guarantee. The guarantee in this Subsidiary Guarantee is a continuing guarantee of payment, and shall apply to all
Guaranteed Obligations whenever arising. 
  

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 Section 1.08 General Limitation on Guarantee Obligations. In any action or proceeding
involving any state corporate, limited partnership or limited liability company law, or any applicable state, federal or foreign bankruptcy, insolvency, reorganization or other law affecting the rights of creditors generally, if the obligations of
the Subsidiary Guarantor under Section 1.01 would otherwise be held or determined to be void, voidable, invalid or unenforceable, or subordinated to the claims of any other creditors, on account of the amount of its liability under
Section 1.01, then, notwithstanding any other provision to the contrary, the amount of such liability shall, without any further action by the Subsidiary Guarantor, the Trustee or any Holder or any other person, be automatically limited and
reduced to the maximum amount which, after giving effect to all other contingent and fixed liabilities of such Subsidiary Guarantor and after giving effect to any collections from or payments made by or on behalf of any other Subsidiary Guarantor in
respect of the obligations of such other Subsidiary Guarantor under its Subsidiary Guarantee or pursuant to its contribution obligations under Section 1.09, will result in the obligations of such Subsidiary Guarantor under its Subsidiary
Guarantee not constituting a fraudulent conveyance or fraudulent transfer under federal or state law. 
 Section 1.09 Right of
Contribution. The Subsidiary Guarantor hereby agrees that to the extent that any Subsidiary Guarantor shall have paid more than its proportionate share of any payment made under a Subsidiary Guarantee (based on the respective net assets of all
Subsidiary Guarantors at the time of such payment determined in accordance with GAAP), such Subsidiary Guarantor shall be entitled to seek and receive contribution from and against any other Subsidiary Guarantor which has not paid its proportionate
share of such payment. Each Subsidiary Guarantor’s right of contribution shall be subject to the terms and conditions of Section 1.04. The provisions of this Section 1.09 shall in no respect limit the obligations and liabilities of
any Subsidiary Guarantor to the Trustee or any Holder and the Subsidiary Guarantor shall remain liable to the Trustee or any Holder for the full amount guaranteed by the Subsidiary Guarantor hereunder. 
 Section 1.10 Releases. The Subsidiary Guarantor shall be released from its obligations under Section 1.01 hereof as specified in
Section 11.02 of the Supplemental Indenture in respect of the Notes. 
  

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