Document:

First Amendment to Convertible Note Purchase Agreement dated April 11, 2007

 Exhibit 10.45 
 FIRST AMENDMENT TO 
 CONVERTIBLE NOTE PURCHASE AGREEMENT 
 THIS FIRST AMENDMENT TO CONVERTIBLE NOTE PURCHASE AGREEMENT (the “Amendment”) is made as of this 11th day of April, 2007, by and between
ELANDIA, INC., a Delaware corporation (the “Company”), and STANFORD INTERNATIONAL BANK LIMITED, a corporation organized under the laws of Antigua and Barbuda (the “Purchaser”). 
 RECITALS 
 WHEREAS, the Company
and the Purchaser entered into that certain Convertible Note Stock Purchase Agreement, dated as of February 16, 2007 (the “Original Agreement”), whereby the Purchaser agreed to purchase from the Company, a certain convertible
promissory note for an aggregate purchase price of $25,300,000; 
 WHEREAS, the Purchaser agreed pursuant to the terms of
Section 4.12 of the Original Agreement to provide up to $5,000,000 in additional financing (inclusive of certain placement and advisory fees) to the Company, on the same terms and conditions as described in the Original Agreement, and subject
to the satisfaction of certain conditions (the “Additional Funding Commitment”); 
 WHEREAS, pursuant to a Loan Agreement
dated October 30, 2006, the Company’s subsidiary, AST Telecom, LLC (“AST”), has obtained from ANZ Finance American Samoa, Inc. and ANZ Amerika Samoa Bank (jointly “ANZ”) a $5,800,000 financing facility (the “ANZ
Loan Agreement”); and 
 WHEREAS, the Company and the Purchaser desire to amend Section 4.12 of the Original Agreement as
provided herein. 
 NOW, THEREFORE, in consideration of the premises and the mutual covenants contained herein and other good and
valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties agree as follows: 
 AGREEMENT

 1. Amendments to the Original Agreement. Section 4.12 of the Original Agreement is hereby deleted in its
entirety and replaced with the following: 
 4.12 Additional Funding Commitment. The Purchaser shall provide up to
$5,000,000 in additional financing (inclusive of an additional placement and advisory fee to SGC of $500,000) to the Company upon the written request of the Company, on the same terms and conditions as described herein (including the issuance by the
Company of an additional convertible promissory note as well as the issuance of warrants in accordance with Schedule 2 attached hereto and the corresponding registration rights 

 
with respect to the shares of Common Stock underlying such warrants and the shares of Common Stock issuable upon conversion of the Series A Preferred Stock
issuable upon conversion of this additional debt), upon the first to occur of the following: (i) Latin Node shall have obtained at least $5,000,000 in third party debt financing within the next twelve (12) months; OR (ii) the
revolving loan portion of the ANZ financing facility (in an amount up to $5,000,000) shall have matured and not been renewed and there shall not exist any event of default under Section 6.11 of the ANZ Loan Agreement. The Company may use the
net proceeds of the additional $5,000,000 funding to provide additional working capital to Latin Node and to satisfy the obligations of AST and the Company to ANZ under the ANZ Loan Agreement and the continuing guaranty executed by the Company in
connection therewith, as well as for general working capital purposes of the Company. In addition to the placement and advisory fee to SGC described above, upon the funding of the additional financing, the Company shall issue to SGC 7-year warrants
(along with corresponding registration rights) to purchase 50,000 shares of Common Stock exercisable at $5.00 per share. 
 2.
Miscellaneous. 
 (a) The Original Agreement is reaffirmed and ratified in all respects, except as expressly provided herein.

 (b) The Company’s representations and warranties contained in the Original Agreement are true and correct in all respects on and as
of the date hereof, as though made on and as of such date, except to the extent that any such representation or warranty relates solely to an earlier date, in which case such representation or warranty is true and correct in all respects on and as
of such earlier date. The Company has performed all covenants and agreements required to be performed pursuant to the Original Agreement in all respects on and as of the date hereof and as of the date hereof there exists no violation or default (or
any event which with the giving of notice, or lapse of time or both, would result in a violation or become a default) under the Original Agreement. 
 (c) In the event of any conflict between the terms or provisions of this Amendment and the Original Agreement, then this Amendment shall prevail in all respects. Otherwise, the provisions of the Original Agreement shall remain in full force
and effect. 
 (d) Capitalized terms used in this Amendment and not otherwise defined in this Amendment have the meanings assigned to them in
the Original Agreement. 
 (e) The parties shall execute and deliver any other instruments or documents and take any further actions after
the execution of this Amendment, which may be reasonably required for the implementation of this Amendment and the transactions contemplated hereby. 
 [Remainder of Page Intentionally Left Blank] 
  

 2 

 IN WITNESS WHEREOF, the parties hereto have executed this Amendment as of the date first above written.

  

			
	COMPANY:
	
	Elandia, Inc.
		
	 By:
	 	 /s/ Harry Hobbs

		 	 Harry Hobbs

		 	 Chief Executive Officer

	
	PURCHASER:
	
	Stanford International Bank Ltd.
		
	 By:
	 	 /s/ James M. Davis

		 	 James M. Davis

		 	 Chief Financial Officer

  

 3Letter from Amerika Samoa Bank dated April 17, 2007

 AMERIKA SAMOA BANK 
 17 April, 2007 
  
  
 Mr M Rollins 
 Chief Financial Officer 
 Elandia, Inc. 
 1500 Cordova Road, Suite 312 
 Fort
Lauderdale, FL 33316 
 U.S.A. 
  
 Dear Mr Rollins 
 NOTICE OF EVENT OF DEFAULT- AST Telecom, LLC (and
Parent) 
 I refer to our loan documentation dated 30 October 2006. 
 The following events of default has occurred and the Bank is entitled to exercise the rights given to it upon default: 
  

			
	 •     The Interest Cover ratio to be no less than 1.50 times.
	  	
		
	        Calculated as: EBIT	  	
	 Interest Expense
	  	

 Based on the audited financial statements for the year ended 31 December 2006, the above covenant was
breached, with calculation as follows: 
 (2,088) 
   743 
 = (2.81) 
  

			
	 •     The Debt Service Cover to be no more than 2.50 to 1.
	  	
		
	        Calculated as: Total Debt	  	
	 EBITDA
	  	

 Based on the audited financial statements for the year ended 31 December 2006, the above covenant was
breached, with calculation as follows: 
 5,013 
 1,882

 = 2.66:1 
  

			
	 •     The Current Ratio to be no less than 1.00 to 1.
	  	
		
	        Calculated as: Current Assets	  	
	 Current Liabilities
	  	

 Based on the audited financial statements for the year ended 31 December 2006, the above covenant was
breached, with calculation as follows: 
 11,229 
 19,622

 = 0.57:1 

 The Bank acknowledges the breach of notification obligations with respect to the purchase of “Latin Node” and
the implications with respect to section 8.1(e) of the loan agreement and section 5 of the continuing guarantee dated 30 October 2006. 
 In agreement
with the borrower and to accommodate the borrowers request for review of the current covenants to allow for future acquisitions and borrowing requirements, the Bank will conduct a review of these covenants and conditions by 30 April 2007.

 In light of its continuing relationship with the borrower, the Bank will permanently waive the breaches noted above and will not demand immediate
re-payment of the loan on this occasion but reserves its rights in relation to any other breaches of covenant that may occur in the future (including, without limitation, any other breaches of the Interest Cover Ratio). 
 This letter does not affect any other rights that we may have. 
 Yours
sincerely 
 /s/ Andrew Chambers 
  
 Andrew Chambers 
 Manager Commercial Banking 
 ANZ Amerika Samoa BankForm of Indenture

 Exhibit 4.14 
  

 OSCIENT PHARMACEUTICALS
CORPORATION 
 as Issuer 
 and

 U.S. BANK NATIONAL ASSOCIATION as Trustee 
  

 INDENTURE 
 Dated as of             , 2007 
  

 3.50% Convertible Senior Notes Due 2011 
  

 TABLE OF CONTENTS 
  

			
	 	  	Page
	 ARTICLE 1 Definitions and Other Provisions of General Application
	  	1
		
	 Section 1.01. Definitions
	  	1
		
	 Section 1.02. Compliance Certificates and Opinions
	  	9
		
	 Section 1.03. Form of Documents Delivered to Trustee
	  	9
		
	 Section 1.04. Acts of Holders; Record Dates
	  	10
		
	 Section 1.05. Notices, Etc., to Trustee and Company
	  	11
		
	 Section 1.06. Notice to Holders; Waiver
	  	11
		
	 Section 1.07. Conflict with Trust Indenture Act
	  	11
		
	 Section 1.08. Effect of Headings and Table of Contents
	  	12
		
	 Section 1.09. Successors and Assigns
	  	12
		
	 Section 1.10. Severability Clause
	  	12
		
	 Section 1.11. Benefits of Indenture
	  	12
		
	 Section 1.12. Governing Law
	  	12
		
	 Section 1.13. Legal Holiday
	  	12
		
	 ARTICLE 2 Security Forms
	  	12
		
	 Section 2.01. Forms Generally
	  	12
		
	 Section 2.02. Form of Face of Security
	  	13
		
	 Section 2.03. Form of Reverse of Security
	  	13
		
	 Section 2.04. Form of Trustee’s Certificate of Authentication
	  	13
		
	 ARTICLE 3 The Securities
	  	13
		
	 Section 3.01. Title and Terms
	  	13
		
	 Section 3.02. Denominations
	  	14
		
	 Section 3.03. Execution, Authentication, Delivery and Dating
	  	14

  

 i 

			
	 Section 3.04. Temporary Securities
	  	14
		
	 Section 3.05. Registration; Registration of Transfer and Exchange
	  	15
		
	 Section 3.06. Mutilated, Destroyed, Lost and Stolen Securities
	  	16
		
	 Section 3.07. Persons Deemed Owners
	  	16
		
	 Section 3.08. Book-Entry Provisions for Global Securities
	  	17
		
	 Section 3.09. Cancellation and Transfer Provisions
	  	18
		
	 Section 3.10. CUSIP Numbers
	  	19
		
	 ARTICLE 4 Satisfaction And Discharge
	  	19
		
	 Section 4.01. Satisfaction and Discharge of Indenture
	  	19
		
	 Section 4.02. Application of Trust Money
	  	19
		
	 ARTICLE 5 Remedies
	  	20
		
	 Section 5.01. Events of Default
	  	20
		
	 Section 5.02. Acceleration of Maturity; Rescission and Annulment
	  	22
		
	 Section 5.03. Collection of Indebtedness and Suits for Enforcement by Trustee
	  	23
		
	 Section 5.04. Trustee May File Proofs of Claim
	  	24
		
	 Section 5.05. Application of Money Collected
	  	24
		
	 Section 5.06. Limitation on Suits
	  	24
		
	 Section 5.07. Unconditional Right of Holders to Receive Payment
	  	25
		
	 Section 5.08. Restoration of Rights and Remedies
	  	25
		
	 Section 5.09. Rights and Remedies Cumulative
	  	25
		
	 Section 5.10. Delay or Omission Not Waiver
	  	26
		
	 Section 5.11. Control by Holders
	  	26
		
	 Section 5.12. Waiver of Past Defaults
	  	26
		
	 Section 5.13. Undertaking for Costs
	  	26
		
	 Section 5.14. Waiver of Stay or Extension Laws
	  	27

  

 ii 

			
	 ARTICLE 6 The Trustee
	  	27
		
	 Section 6.01. Certain Duties and Responsibilities
	  	27
		
	 Section 6.02. Notice of Defaults
	  	27
		
	 Section 6.03. Certain Rights Of Trustee
	  	27
		
	 Section 6.04. Not Responsible for Recitals
	  	29
		
	 Section 6.05. May Hold Securities
	  	29
		
	 Section 6.06. Money Held in Trust
	  	29
		
	 Section 6.07. Compensation and Reimbursement
	  	29
		
	 Section 6.08. Disqualification; Conflicting Interests
	  	30
		
	 Section 6.09. Corporate Trustee Required; Eligibility
	  	30
		
	 Section 6.10. Resignation and Removal; Appointment of Successor
	  	30
		
	 Section 6.11. Acceptance of Appointment by Successor
	  	32
		
	 Section 6.12. Merger, Conversion, Consolidation or Succession to Business
	  	32
		
	 Section 6.13. Preferential Collection of Claims Against
	  	32
		
	 ARTICLE 7 Holders’ Lists And Reports By Trustee
	  	32
		
	 Section 7.01. Company to Furnish Trustee Names and Addresses of Holders
	  	32
		
	 Section 7.02. Preservation of Information; Communications to Holders
	  	33
		
	 Section 7.03. Reports By Trustee
	  	33
		
	 Section 7.04. Reports by Company
	  	33
		
	 ARTICLE 8 Consolidation, Merger, Conveyance, Transfer Or Lease
	  	34
		
	 Section 8.01. Company May Consolidate, etc
	  	34
		
	 Section 8.02. Successor Substituted
	  	34
		
	 ARTICLE 9 Supplemental Indentures
	  	35
		
	 Section 9.01. Supplemental Indentures Without Consent of Holders
	  	35
		
	 Section 9.02. Supplemental Indentures With Consent of Holders
	  	36

  

 iii 

			
	 Section 9.03. Execution of Supplemental Indentures
	  	37
		
	 Section 9.04. Effect of Supplemental Indentures
	  	37
		
	 Section 9.05. Conformity with Trust Indenture Act
	  	37
		
	 Section 9.06. Reference in Securities to Supplemental Indentures
	  	37
		
	 ARTICLE 10 Covenants
	  	38
		
	 Section 10.01. Payments
	  	38
		
	 Section 10.02. Maintenance of Office or Agency
	  	38
		
	 Section 10.03. Money for Security Payments to be Held in Trust
	  	38
		
	 Section 10.04. Statement by Officers as to Default
	  	39
		
	 Section 10.05. Existence
	  	40
		
	 Section 10.06. Reports and Delivery of Certain Information
	  	40
		
	 Section 10.07. Book-Entry System
	  	40
		
	 Section 10.08. Information for IRS Filings
	  	40
		
	 ARTICLE 11 Redemption And Repurchase Upon A Fundamental Change
	  	40
		
	 Section 11.01. Right to Redeem; Notices to Trustee
	  	40
		
	 Section 11.02. Selection of Securities to be Redeemed
	  	41
		
	 Section 11.03. Notice of Redemption
	  	41
		
	 Section 11.04. Effect of Notice of Redemption
	  	42
		
	 Section 11.05. Deposit of Redemption Price
	  	42
		
	 Section 11.06. Securities Redeemed in Part
	  	42
		
	 Section 11.07. Conversion Arrangement on Call for Redemption
	  	42
		
	 Section 11.08. Repurchase of Securities at Option of the Holder Upon Fundamental Change.
	  	43
		
	 Section 11.09. Effect of Fundamental Change Repurchase Notice
	  	49
		
	 Section 11.10. Deposit of Fundamental Change Repurchase Price
	  	50
		
	 Section 11.11. Securities Repurchased in Whole or in Part
	  	51

  

 iv 

			
	 Section 11.12. Covenant to Comply With Securities Laws Upon Repurchase of Securities
	  	51
		
	 Section 11.13. Repayment to the Company
	  	51
		
	 ARTICLE 12 Interest Payments on the Securities
	  	51
		
	 Section 12.01. Interest Rate
	  	51
		
	 ARTICLE 13 Conversion
	  	52
		
	 Section 13.01. Conversion Privilege
	  	52
		
	 Section 13.02. Conversion Procedure.
	  	53
		
	 Section 13.03. Fractional Shares
	  	54
		
	 Section 13.04. Taxes on Conversion
	  	54
		
	 Section 13.05. Company to Provide Stock.
	  	54
		
	 Section 13.06. Adjustment of Conversion Rate
	  	55
		
	 Section 13.07. No Adjustment
	  	59
		
	 Section 13.08. Adjustment for Tax Purposes
	  	60
		
	 Section 13.09. Notice of Conversion Rate Adjustment
	  	60
		
	 Section 13.10. Notice of Certain Transactions
	  	60
		
	 Section 13.11. Effect of Reclassification, Consolidation, Merger or Sale on Conversion Privilege
	  	61
		
	 Section 13.12. Trustee’s Disclaimer
	  	61
		
	 Section 13.13. Voluntary Increase
	  	62
		
	 Section 13.14. Automatic Conversion by the Company
	  	62
		
	 Section 13.15. Voluntary Conversion Prior to May 10, 2010
	  	64
		
	 Section 13.16. Company Determination Final
	  	65

  

 v 

			
	 EXHIBITS:
	  	 
	 Exhibit A
	  	Form of Face of Security
	 Exhibit B
	  	Form of Reverse of Security
	 Exhibit C
	  	Form of Trustee’s Certificate of Authentication
	 Exhibit D
	  	Form of Fundamental Change Repurchase Notice

  

 vi 

 INDENTURE, dated as of             ,
2007, between Oscient Pharmaceuticals Corporation, a corporation duly organized and existing under the laws of The Commonwealth of Massachusetts, as Issuer (the “Company”), having its principal office at 1000 Winter Street, Suite
2200, Waltham, MA 02451 and U.S. Bank National Association, a national banking association, as Trustee (the “Trustee”). 
 RECITALS OF THE COMPANY 
 The Company has duly authorized the creation of an issue of its 3.50% Convertible Senior Notes Due 2011
(each a “Security” and collectively, the “Securities”) of substantially the tenor and amount hereinafter set forth, and to provide therefor the Company has duly authorized the execution and delivery of this
Indenture. 
 All things necessary to make the Securities, when executed by the Company and authenticated and delivered hereunder and duly
issued by the Company, the valid and legally binding obligations of the Company, and to make this Indenture a valid and legally binding agreement of the Company, in accordance with the terms of the Securities and the Indenture, have been done.
Further, all things necessary to duly authorize the issuance of the Common Stock of the Company issuable upon the conversion of the Securities, and to duly reserve for issuance the number of shares of Common Stock issuable upon such conversion, have
been done. 
 NOW, THEREFORE, THIS INDENTURE WITNESSETH: 
 For and in consideration of the premises and the purchases of the Securities by the Holders thereof, it is mutually agreed, for the benefit of the Company and the equal and proportionate benefit of all Holders of the
Securities, as follows: 
 ARTICLE 1 
 Definitions and Other Provisions of General Application 
 Section 1.01. Definitions. For all purposes of this
Indenture, except as otherwise expressly provided or unless the context otherwise requires: 
 (i) the terms defined in this
Article have the meanings assigned to them in this Article and include the plural as well as the singular; 
 (ii) all other
terms used herein and not otherwise defined that are defined in the Trust Indenture Act, either directly or by reference therein, have the meanings assigned to them therein; 
 (iii) all accounting terms not otherwise defined herein have the meanings assigned to them in accordance with GAAP; and 
 (iv) the words “herein,” “hereof’ and “hereunder” and other words of similar import refer to this Indenture
as a whole and not to any particular Article, Section or other subdivision. 

 “Act” when used with respect to any Holder, has the meaning specified in
Section 1.04. 
 “Additional Interest Payment” means the additional interest to be paid by the Company upon an
Automatic Conversion or upon a Voluntary Conversion, as the case may be, equal to the amount of interest that would have been paid on the Securities from the last day interest was paid on the Securities, through and including May 10, 2010. The
Company may, at its option, pay the Additional Interest Payment in cash, Common Stock, or a combination thereof. In the event that the Company elects to pay the Additional Interest Payment upon an Automatic Conversion in Common Stock, the Common
Stock will be valued at 90% of the Automatic Conversion Price in effect at that time. In the event that the Company elects to pay the Additional Interest Payment upon a Voluntary Conversion in Common Stock, the Common Stock will be valued at the
Conversion Price then in effect. 
 “Additional Securities” means any Securities (other than the Initial Securities) issued
pursuant to this Indenture in accordance with Section 3.01 hereof, as part of the same series and with the same “CUSIP” number as the Initial Securities. 
 “Affiliate” of any specified Person means any other Person directly or indirectly controlling or controlled by or under direct or indirect common control with such specified Person. For the purposes
of this definition, “control” when used with respect to any specified Person means 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; and the terms “controlling” and “controlled” have meanings correlative to the foregoing. 
 “Agent
Members” has the meaning specified in Section 3.08. 
 “Automatic Conversion” has the meaning specified in
Section 13.14(a). 
 “Automatic Conversion Date” has the meaning specified in Section 13.14(a). 
 “Automatic Conversion Notice” has the meaning specified in Section 13.14(b). 
 “Automatic Conversion Price” has the meaning specified in Section 13.14(a). 
 “Board of Directors” means, with respect to any Person, either the board of directors of such Person or any duly authorized committee of
that board. 
 “Board Resolution” means, with respect to any Person, a copy of a resolution certified by the Secretary or an
Assistant Secretary of such Person to have been duly adopted by the Board of Directors and to be in full force and effect on the date of such certification, and delivered to the Trustee. 
 “Business Day” means any day other than a Saturday, a Sunday or a day on which banking institutions in The City of New York or the city
in which the Corporate Trust Office is located are authorized or obligated by law, or executive order or governmental decree to be closed. 
  

 2 

 “Capital Stock” means any and all shares, interests, participations, rights or other
equivalents (however designated) of corporate stock, including, without limitation, with respect to partnerships, partnership interests (whether general or limited) and 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, such partnership. 
 “Change of Control Event”
means any transaction or event (whether by means of an exchange offer, liquidation, tender offer, consolidation, merger, combination, reclassification, recapitalization, sale of all or substantially all of the Company’s assets or otherwise) in
connection with which all or substantially all of the Common Stock is exchanged for, converted into, acquired for or constitutes solely the right to receive, consideration which is not all or substantially all common stock or American Depositary
Shares that (i) is listed on, or immediately after the transaction or event will be listed on, a United States national securities exchange, or (ii) is approved, or immediately after the transaction or event will be approved, for quotation
on a United States system of automated dissemination of quotations of securities prices. 
 “Closing Price” with respect to
the Company’s Common Stock on any date means the closing price on such date as reported on the National Association of Securities Dealers Automated Quotation System or the principal U.S. securities exchange on which the Company’s Common
Stock is then listed, or, if the Company’s Common Stock is not listed on the National Association of Securities Dealers Automated Quotation System or another U.S. national or regional exchange or, as reported on the principal other market on
which the Company’s Common Stock is then traded. In the absence of such listings, the Board of Directors of the Company will make a good faith determination of the closing price. 
 “Commission” means the Securities and Exchange Commission, as from time to time constituted, created under the Exchange Act, or, if at
any time after the execution of this instrument such Commission is not existing and performing the duties now assigned to it under the Trust Indenture Act, then the body performing such duties at such time. 
 “Common Stock” means the shares of Common Stock, par value $0.10 per share, of the Company as it exists on the date of this Indenture or
any other shares of Capital Stock of the Company into which the Common Stock shall be reclassified or changed or, in the event of a merger, consolidation or other similar transaction involving the Company that is otherwise permitted hereunder in
which the Company is not the surviving corporation, the common stock, common equity interests, ordinary shares or depositary shares or other certificates representing common equity interests of such surviving corporation or its direct or indirect
parent corporation. 
 “Company” means the Person named as the “Company” in the first paragraph of this instrument
until a successor Person shall have become such pursuant to the applicable provisions of this Indenture, and thereafter “Company” shall mean such successor Person. 
 “Company Request” or “Company Order” means a written request or order signed in the name of the Company by its Chairman of the
Board, its Vice Chairman of the Board, its President or any Vice President, and by its Chief Financial Officer, its Treasurer, an Assistant Treasurer, its Secretary or an Assistant Secretary, and delivered to the Trustee. 
  

 3 

 “Conversion Agent” means the Trustee or such other office or agency designated by the
Company with notice provided to the Holders where Securities may be presented for conversion. 
 “Conversion Date” has the
meaning specified in Section 13.02(a). 
 “Conversion Price” has the meaning specified in Section 13.01(c).

 “Conversion Rate” has the meaning specified in Section 13.01(c). 
 “Corporate Trust Office” means the corporate trust office of the Trustee at which
this Indenture shall, at any particular time, be principally administered, which office is, at the date of this Indenture, located at One Federal Street, 3rd Floor, Boston, Massachusetts 02110. 
 “Corporation” means a corporation,
association, company, joint-stock company or business trust. 
 “Current Market Price” has the meaning specified in
Section 13.06(f). 
 “Default” means any event that is or with the passage of time or the giving of notice or both
would become an Event of Default. 
 “Determination Date” has the meaning specified in Section 13.06(d). 
 “Depositary” means The Depository Trust Company until a successor Depositary shall have become such pursuant to the applicable
provisions of this Indenture, and thereafter “Depositary” shall mean such successor Depositary. 
 “Event of
Default” has the meaning specified in Section 5.01. 
 “Exchange Act” means the U.S. Securities Exchange Act
of 1934, as amended. 
 “Expiration Date” has the meaning specified in Section 13.06(e). 
 “Expiration Time” has the meaning specified in Section 13.06(e). 
 “Extension Fee” has the meaning specified in Section 5.01. 
 “Extension Period” has the meaning specified in Section 5.01. 
 “Filing Failure” has the meaning specified in Section 5.01(g). 
 “Fundamental Change” means any transaction or event resulting in either a Change of Control Event or a Termination of Trading.

  

 4 

 “Fundamental Change Company Notice” has the meaning specified in Section 11.08(c).

 “Fundamental Change Repurchase Date” has the meaning specified in Section 11.08(a). 
 “Fundamental Change Repurchase Notice” has the meaning specified in Section 11.08(d). 
 “Fundamental Change Repurchase Price” has the meaning specified in the Securities. 
 “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 have been approved by a significant segment of the accounting
profession, in each case, as in effect in the United States on the date hereof. 
 “Global Security” means a Security in
global form registered in the Security Register in the name of a Depositary or a nominee thereof. 
 “Holder” or
“Securityholder” means a Person in whose name a Security is registered in the Security Register. 
 “Indenture” means this instrument as originally executed or as it may from time to time be supplemented or amended by one or more indentures supplemental hereto entered into pursuant to the applicable provisions hereof,
including, for all purposes of this instrument and any such supplemental indenture, the provisions of the Trust Indenture Act that are deemed to be a part of and govern this instrument and any such supplemental indenture, respectively. 

“Interest Payment Date” means April 15 and October 15 of each year, commencing October 15, 2007. 
 “Initial Securities” means Securities in an aggregate principal amount of $[215,600,000] initially issued under this Indenture.

 “Investment Company Act” means the Investment Company Act of 1940 and any statute successor thereto, in each case as
amended from time to time. 
 “Issue Date” means the date the Securities are originally issued as set forth on the face of
the Security under this Indenture. 
 “Maturity,” when used with respect to any Security, means the date on which the
principal, Repurchase Price or Fundamental Change Repurchase Price of such Security becomes due and payable as therein or herein provided, whether at the Stated Maturity, on a Redemption Date or Fundamental Change Repurchase Date, or by declaration
of acceleration or otherwise. 
  

 5 

 “NASDAQ” means the NASDAQ Global Market. 
 “Notice of Conversion” has the meaning specified in Section 13.02(a). 
 “Notice of Default” has the meaning specified in Section 5.01(c). 
 “Officers’ Certificate” means a certificate signed by the Chairman of the Board, the President or any Vice President, and by the
Treasurer, an Assistant Treasurer, the Secretary or an Assistant Secretary, of the Company, and delivered to the Trustee. One of the officers signing an Officers’ Certificate given pursuant to Section 10.04 shall be the principal
executive, financial or accounting officer of the Company. 
 “Opinion of Counsel” means a written opinion of counsel, who
may be external or in-house counsel for the Company. 
 “Outstanding,” when used with respect to Securities, means, as of
the date of determination, all Securities theretofore authenticated and delivered under this Indenture, except: 
 (i)
Securities therefore cancelled by the Trustee or delivered to the Trustee for cancellation; 
 (ii) Securities, or portions
thereof, 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 its own Paying Agent) for the Holders of such Securities; provided that if such Securities are to be redeemed prior to the maturity thereof, notice of such redemption shall have been given to the Holders as herein provided, or provision
satisfactory to a Responsible Officer of the Trustee shall have been made for giving such notice; and 
 (iii) Securities that
have been paid or in exchange for or in lieu of which other Securities have been authenticated and delivered pursuant to this Indenture; 
 provided, however, that, in determining whether the Holders of the requisite Principal Amount of the Outstanding Securities have given any request, demand, authorization, direction, notice, consent or waiver hereunder, Securities
owned by the Company or any other obligor upon the 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 Securities which a Responsible Officer of the Trustee actually knows to be so owned shall be so disregarded. 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 Securities and that the pledgee is not the Company or any other obligor upon the
Securities or any Affiliate of the Company or of such other obligor. 
  

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 “Paying Agent” means any Person (including the Company) authorized by the Company to pay
the principal of and interest on the Redemption Price or Fundamental Change Repurchase Price of, any Securities on behalf of the Company. The Trustee shall initially be the Paying Agent. 
 “Person” means any individual, corporation, partnership, limited liability company, joint venture, trust, unincorporated organization or
government or any agency or political subdivision thereof. 
 “Physical Securities” means permanent certificated Securities
in registered form issued in denomination of $1,000 Principal Amount and integral multiples thereof. 
 “Principal Amount”
of a Security means the Principal Amount as set forth on the face of the Security. 
 “Purchased Shares” has the meaning
specified in Section 13.06(e). 
 “Record Date” for the interest payable on any Interest Payment Date means each
April 1 and October 1 (whether or not a Business Day) next preceding such Interest Payment Date. 
 “Redemption
Date” shall mean the date specified for redemption of the Securities in accordance with the terms of the Securities and Article 11 hereof. 
 “Redemption Price” has the meaning specified in the Securities. 
 “Responsible Officer” means any
officer of the Trustee within the Corporate Trust Office of the Trustee with direct responsibility for the administration of this Indenture and also, with respect to a particular matter, any other officer of the Trustee to whom such matter is
referred because of such officer’s knowledge and familiarity with the particular subject. 
 “Rights Plan” has the
meaning specified in Section 13.06(c). 
 “Rule 144” means Rule 144 under the Securities Act (including any successor
rule thereto), as the same may be amended from time to time. 
 “Rule 144A” means Rule 144A under the Securities Act
(including any successor rule thereto), as the same may be amended from time to time. 
 “Securities Act” means the U.S.
Securities Act of 1933, as amended, and the rules and regulations of the Commission promulgated thereunder. 
 “Security” or
“Securities” has the meaning specified in the first paragraph of the Recitals of the Company. 
 “Security
Register” and “Security Registrar” have the respective meanings specified in Section 3.05. 
  

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 “Share Price” means the price per share of Common Stock paid in connection with a
Fundamental Change transaction pursuant to which the Company shall increase the Conversion Rate for Securities surrendered for conversion, as set forth in Section 11.08, which shall be equal to (i) if Holders receive only cash in such
Fundamental Change transaction, the cash amount paid per share of Common Stock and (ii) in all other cases, the average of the Closing Prices of the Common Stock for each of the ten Trading Days immediately prior to, but not including the
effective date of such Fundamental Change transaction. 
 “Stated Maturity,” when used with respect to any Security, means
the date specified in such Security as the fixed date on which an amount equal to the principal amount of such Security together with accrued and unpaid interest is due and payable. 
 “Subsidiary” means a corporation 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. For the purposes of this definition, “voting stock” means stock which ordinarily has voting power for the election of directors, whether at all times or only so long as no senior class of stock has
such voting power by reason of any contingency. 
 “Surviving Entity” has the meaning specified in Section 8.01(a).

 “Termination of Trading” means that the Company’s Common Stock or other common stock into which the Securities are
convertible is neither listed for trading on a United States national securities exchange nor approved for listing on any United States system of automated dissemination of quotations of securities prices, and no American Depositary Shares or
similar instruments for such common stock are so listed or approved for listing in the United States. 
 “Trading Day” means
(x) if the applicable security is listed on NASDAQ, a day on which trades may be made on thereon or (y) if the applicable security is listed or admitted for trading on the New York Stock Exchange or another national security exchange, a
day on which the New York Stock Exchange or such other national security exchange is open for business or (z) if the applicable security is not so listed, admitted for trading or quoted, any Business Day. 
 “Trigger Event” has the meaning specified in Section 13.06(c). 
 “Triggering Distribution” has the meaning specified in Section 13.06(d). 
 “Trust Indenture Act” means the Trust Indenture Act of 1939 as in effect on the date as of which this Indenture was executed;
provided, however, that in the event the Trust Indenture Act of 1939 is amended after such date, “Trust Indenture Act” means, to the extent required by any such amendment, the Trust Indenture Act of 1939 as so amended. 

“Trustee” means the Person named as the “Trustee” in the first paragraph of this instrument until a successor
Trustee shall have become such pursuant to the applicable provisions of this Indenture, and thereafter “Trustee” shall mean such successor Trustee. 
  

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 “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 (its “possessions” including Puerto Rico, the U.S. Virgin Islands, Guam, American Samoa, Wake Island and the Northern Mariana Islands).

 “Vice President,” when used with respect to the Company or the Trustee, means any vice president, whether or not
designated by a number or a word or words added before or after the title “vice president.” 
 “Voluntary
Conversion” has the meaning specified in Section 13.15(a). 
 “Voluntary Conversion Date” has the meaning
specified in Section 13.15(a). 
 Section 1.02. Compliance Certificates and Opinions. Upon any application or request by the
Company to the Trustee to take any action under any provision of this Indenture, the Company shall furnish to the Trustee such certificates and opinions as may be required under the Trust Indenture Act. Each such certificate or opinion shall be
given in the form of an Officers’ Certificate, if to be given by an officer of the Company, or an Opinion of Counsel, if to be given by counsel, and shall comply with the requirements of the Trust Indenture Act and any other requirement set
forth in this Indenture. 
 Every certificate or opinion with respect to compliance with a condition or covenant provided for in this
Indenture shall include: 
 (a) a statement that each individual signing such certificate or opinion has read such covenant or
condition and the definitions herein relating thereto; 
 (b) a brief statement as to the nature and scope of the examination
or investigation upon which the statements or opinions contained in such certificate or opinion are based; 
 (c) a statement
that, in the opinion of each such individual, such individual has made such examination or investigation as is necessary to enable such individual to express an informed opinion as to whether or not such covenant or condition has been complied with;
and 
 (d) a statement as to whether, in the opinion of each such individual, such condition or covenant has been complied
with. 
 Section 1.03. Form of Documents Delivered to Trustee. In any case where several matters are required to be certified by,
or covered by an opinion of, any specified Person, it is not necessary that all such matters be certified by, or covered by the opinion of, only one such Person, or that they be so certified or covered by only one document, but one such Person may
certify or give an opinion with respect to some matters and one or more other such Persons as to other matters, and any such Person may certify or give an opinion as to such matters in one or several documents. 
 Any certificate or opinion of an officer of the Company may be based, insofar as it relates to legal matters, upon a certificate or opinion of, or
representations by, counsel, unless 

  

 9 

 
such officer knows, or in the exercise of reasonable care should know, that the certificate or opinion or representations with respect to the matters upon
which his certificate or opinion is based are erroneous. Any such certificate or Opinion of Counsel may be based, insofar as it relates to factual matters, upon a certificate or opinion of, or representations by, an officer or officers of the
Company stating that the information with respect to such factual matters is in the possession of the Company, unless such counsel knows, or in the exercise of reasonable care should know, that the certificate or opinion or representations with
respect to such matters are erroneous. 
 Where any Person is required to make, give or execute two or more applications, requests, consents,
certificates, statements, opinions or other instruments under this Indenture, they may, but need not, be consolidated and form one instrument. 
 Section 1.04. Acts of Holders; Record Dates. (a) Any request, demand, authorization, direction, notice, consent, waiver or other action provided by this Indenture to be given or taken by Holders may be embodied in and
evidenced by one or more instruments of substantially similar tenor signed by such Holders in person or by agent duly appointed in writing and, except as herein otherwise expressly provided, such action shall become effective when such instrument or
instruments are delivered to the Trustee and, where it is hereby expressly required, to the Company. Such instrument or instruments (and the action embodied therein and evidenced thereby) are herein sometimes referred to as an “Act” of the
Holders signing such instrument or instruments. Proof of execution of any such instrument or of a writing appointing any such agent shall be sufficient for any purpose of this Indenture and (subject to Section 6.01) conclusive in favor of the
Trustee and the Company, if made in the manner provided in this Section. 
 (b) The fact and date of the execution by any
Person of any such instrument or writing may be proved by the affidavit of a witness of such execution or by a certificate of a notary public or other officer authorized by law to take acknowledgments of deeds, certifying that the individual signing
such instrument or writing acknowledged to him the execution thereof. Where such execution is by a signer acting in a capacity other than his individual capacity, such certificate or affidavit shall also constitute sufficient proof of his authority.
The fact and date of the execution of any such instrument or writing, or the authority of the Person executing the same, may also be proved in any other manner which the Trustee reasonably deems sufficient. 
 (c) The Company may, in the circumstances permitted by the Trust Indenture Act, fix any day as the record date for the purpose of
determining the Holders entitled to give or take any request, demand, authorization, direction, notice, consent, waiver or other action, or to vote on any action, authorized or permitted to be given or taken by Holders. If not set by the Company
prior to the first solicitation of a Holder made by any Person in respect of any such action, or, in the case of any such vote, prior to such vote, the record date for any such action or vote shall be the 30th day (or, if later, the date of the most
recent list of Holders required to be provided pursuant to Section 7.01) prior to such first solicitation or vote, as the case may be. With regard to any record date, only the Holders on such date (or their duly designated proxies) shall be
entitled to give or take, or vote on, the relevant action. 
  

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 (d) The ownership of Securities shall be proved by the Security Register. 
 (e) Any request, demand, authorization, direction, notice, consent, waiver or other Act of the Holder of any Security shall bind every
future Holder of the same Security and the Holder of every Security issued upon the registration of transfer thereof or in exchange therefor or in lieu thereof in respect of anything done, omitted or suffered to be done by the Trustee or the Company
in reliance thereon, whether or not notation of such action is made upon such Security. 
 Section 1.05. Notices, Etc., to Trustee
and Company. Any request, demand, authorization, direction, notice, consent, waiver or Act of Holders or other document provided or permitted by this Indenture to be made upon, given or furnished to, or filed with: 
 (i) the Trustee by any Holder or by the Company shall be sufficient for every purpose hereunder if made, given, furnished or filed in
writing to or with the Trustee at its Corporate Trust Office; or 
 (ii) the Company by the Trustee or by any Holder shall be
sufficient for every purpose hereunder (unless otherwise herein expressly provided) if in writing and mailed, first-class postage prepaid, to the Company addressed to it at the address of its principal office specified in the first paragraph of this
instrument or at any other address previously furnished in writing to the Trustee by the Company, Attention: Secretary. 
 Section 1.06.
Notice to Holders; Waiver. Where this Indenture provides for notice to Holders of any event, such notice shall be sufficiently given (unless otherwise herein expressly provided) if in writing and mailed, first-class postage prepaid, to each
Holder affected by such event, at such Holder’s address as it appears in the Security Register, not later than the latest date (if any), and not earlier than the earliest date (if any), prescribed for the giving of such notice. In any case
where notice to Holders is given by mail, neither the failure to mail such notice, nor any defect in any notice so mailed, to any particular Holder shall affect the sufficiency of such notice with respect to other Holders. Where this Indenture
provides for notice in any manner, such notice may be waived in writing by the Person entitled to receive such notice, either before or after the event, and such waiver shall be the equivalent of such notice. Waivers of notice by Holders shall be
filed with the Trustee, but such filing shall not be a condition precedent to the validity of any action taken in reliance upon such waiver. 
 In case by reason of the suspension of regular mail service or by reason of any other cause it shall be impracticable to give such notice by mail, then such notification as shall be made with the approval of the Trustee shall constitute a
sufficient notification for every purpose hereunder. 
 Whenever under this Indenture the Trustee is required to provide any notice by mail,
in all cases the Trustee may alternatively provide notice by overnight courier or by telefacsimile, with confirmation of transmission. 
 Section 1.07. Conflict with Trust Indenture Act. If any provision hereof limits, qualifies or conflicts with a provision of the Trust Indenture Act that is required hereunder to be 
  

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a part of and govern this Indenture, the latter provision shall control. If any provision of this Indenture modifies or excludes any provision of the Trust
Indenture Act that may be so modified or excluded, the latter provision shall be deemed to apply to this Indenture as so modified or to be excluded, as the case may be. 
 Section 1.08. Effect of Headings and Table of Contents. The Article and Section headings herein and the Table of Contents are for convenience only and shall not affect the construction hereof, and all
Article and Section references are to Articles and Sections, respectively, of this Indenture unless otherwise expressly stated. 
 Section 1.09. Successors and Assigns. All covenants and agreements in this Indenture by the Company shall bind its successors and assigns, whether so expressed or not. 
 Section 1.10. Severability Clause. In case any provision in this Indenture or in the 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 1.11. Benefits of Indenture. Nothing in this Indenture or in the Securities, express or implied, shall give to any Person, other than the parties hereto and their respective successors hereunder and the Holders of
Securities, any benefit or any legal or equitable right, remedy or claim under this Indenture. 
 Section 1.12. Governing Law.
This Indenture and the Securities shall be governed by and construed in accordance with the laws of the State of New York. 
 Section 1.13. Legal Holiday. In any case where any Interest Payment Date or Stated Maturity of any Security shall not be a Business Day, then (notwithstanding any other provision of this Indenture or of the Securities) payment
of interest or principal need not be made on such date, but may be made on the next succeeding Business Day with the same force and effect as if made on the Interest Payment Date or at the Stated Maturity; provided, that no interest shall accrue
with respect to such payment for the period from and after such Interest Payment Date or Stated Maturity, as the case may be. 
 ARTICLE 2

 Security Forms 
 Section 2.01. Forms Generally. The Securities and the Trustee’s certificates of authentication shall be in substantially the forms set forth in this Article, 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 may be required to comply with the rules of any securities
exchange or Depositary therefor, the Internal Revenue Code of 1986, as amended, and regulations thereunder, or as may, consistently herewith, be determined by the officers executing such Securities, as evidenced by their execution thereof.

 The Securities shall initially be issued in the form of permanent Global Securities in registered form in substantially the form set forth
in this Article. The aggregate Principal Amount of the Global Securities may from time to time be increased or decreased by adjustments made on the records of the Trustee, as custodian for the Depositary, as hereinafter provided. 
  

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 Section 2.02. Form of Face of Security. The face of each Security shall be substantially in
the form of Exhibit A attached hereto. 
 Section 2.03. Form of Reverse of Security. The reverse of each Security shall be
substantially in the form of Exhibit B attached hereto. 
 Section 2.04. Form of Trustee’s Certificate of
Authentication. No Security shall be entitled to any benefit under this Indenture or be valid or obligatory for any purpose unless there appears on such Security a certificate of authentication substantially in the form of Exhibit C
attached hereto. 
 ARTICLE 3 
 The Securities 
 Section 3.01. Title and Terms. The aggregate Principal Amount of Securities that may be authenticated
and delivered under this Indenture is initially limited to $250,000,000, except for Securities authenticated and delivered upon registration or transfer of, or in exchange for, or in lieu of, other Securities pursuant to Section 3.04, 3.05,
3.06, 9.06 or 11.06. The Company may, from time to time after the execution of this Indenture, execute and deliver to the Trustee for authentication Additional Securities, and the Trustee shall thereupon authenticate and deliver such Additional
Securities to or upon the written order of the Company, without any further action by the Company hereunder; provided, however, that the Company may issue Additional Securities only if: (1) such Additional Securities and Initial Securities are
treated as part of the same issue of debt instruments for purposes of U.S. federal income tax laws; (2) such Additional Securities have the same “CUSIP” number as the Initial Securities; and (3) the Trustee receives an
Officers’ Certificate and an Opinion of Counsel to the effect that such issuance of Additional Securities complies with the provisions of this Indenture , including each provision of this paragraph. 
 The Securities shall be known and designated as the “3.50% Convertible Senior Notes Due 2011” of the Company. The Principal Amount shall be
payable at the Stated Maturity. 
 The Principal Amount and accrued interest and on the Securities shall be payable at the office or agency
of the Company in The City of New York maintained for such purpose and at any other office or agency maintained by the Company for such purpose; provided, however, that at the option of the Company payments may be made by wire transfer or by
check mailed to the address of the Person entitled thereto as such address shall appear in the Security Register. 
 The Securities shall not
have the benefit of a sinking fund. 
 The Securities shall not be superior in right of payment to, and shall rank pari passu with, all other
existing and future unsecured and unsubordinated indebtedness of the Company, including trade payables. 
  

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 Section 3.02. Denominations. The Securities shall be issuable only in registered form without
coupons and in denominations of $1,000 and any integral multiple of $1,000 above that amount. 
 Section 3.03. Execution,
Authentication, Delivery and Dating. The Securities shall be executed on behalf of the Company by its Chairman of the Board, its President or one of its Vice Presidents. 
 Securities bearing the manual or facsimile signatures of individuals who were at any time the proper officers of the Company shall bind the Company,
notwithstanding that such individuals or any of them have ceased to hold such offices prior to the authentication and delivery of such Securities or did not hold such offices at the date of such Securities. 
 At any time and from time to time after the execution and delivery of this Indenture, the Company may deliver Securities executed by the Company to the
Trustee for authentication, together with a Company Order for the authentication and delivery of such Securities. The Company Order shall specify the amount of Securities to be authenticated, and shall further specify the amount of such Securities
to be issued as a Global Security or as Physical Securities. The Trustee in accordance with such Company Order shall authenticate and deliver such Securities as in this Indenture provided and not otherwise. 
 Each Security shall be dated the date of its authentication. 
 No Security shall be entitled to any benefit under this Indenture or be valid or obligatory for any purpose unless there appears on such Security a certificate of authentication substantially in the form provided for
herein executed by the Trustee by manual signature, and such certificate upon any Security shall be conclusive evidence, and the only evidence, that such Security has been duly authenticated and delivered hereunder. 
 Section 3.04. Temporary Securities. Pending the preparation of definitive Securities, the Company may execute, and upon Company Order the
Trustee shall authenticate and deliver, temporary Securities which are printed, lithographed, typewritten, mimeographed or otherwise produced, in any authorized denomination, substantially of the tenor of the definitive Securities in lieu of which
they are issued and with such appropriate insertions, omissions, substitutions and other variations as the officers executing such Securities may determine, as evidenced by their execution of such Securities. 
 If temporary Securities are issued, the Company will cause definitive Securities to be prepared without unreasonable delay. After the preparation of
definitive Securities, the temporary Securities shall be exchangeable for definitive Securities upon surrender of the temporary Securities at any office or agency of the Company designated pursuant to Section 10.02, without charge to the
Holder. Upon surrender for cancellation of any one or more temporary Securities the Company shall execute and the Trustee shall authenticate and deliver in exchange therefor a like Principal Amount of definitive Securities of authorized
denominations. Until so exchanged, the temporary Securities shall in all respects be entitled to the same benefits under this Indenture as definitive Securities. 
  

 14 

 Section 3.05. Registration; Registration of Transfer and Exchange. (a) The Company shall
cause to be kept at the Corporate Trust Office of the Trustee a register (the register maintained in such office and in any other office or agency designated pursuant to Section 10.02 being herein sometimes collectively referred to as the
“Security Register”) in which, subject to such reasonable regulations as it may prescribe, the Company shall provide for the registration of Securities and of transfers of Securities. The Trustee is hereby appointed “Security
Registrar” (the “Security Registrar”) for the purpose of registering Securities and transfers of Securities as herein provided. 
 Upon surrender for registration of transfer of any Security at an office or agency of the Company designated pursuant to Section 10.02 for such purpose, the Company shall execute, and the Trustee shall
authenticate and deliver, in the name of the designated transferee or transferees, one or more new Securities of any authorized denominations and of a like aggregate Principal Amount and tenor. 
 At the option of the Holder and subject to the other provisions of this Section 3.05 and to Section 3.09, Securities may be exchanged for other
Securities of any authorized denominations and of a like aggregate Principal Amount and tenor, upon surrender of the Securities to be exchanged at such office or agency. Whenever any Securities are so surrendered for exchange, the Company shall
execute, and the Trustee shall authenticate and deliver, the Securities which the Holder making the exchange is entitled to receive. 
 All
Securities issued upon any registration of transfer or exchange of Securities shall be the valid obligations of the Company, evidencing the same debt, and entitled to the same benefits under this Indenture, as the Securities surrendered upon such
registration of transfer or exchange. 
 Every Security presented or surrendered for registration of transfer or for exchange shall (if so
required by the Company or the Trustee) be duly endorsed, or be accompanied by a written instrument of transfer in form satisfactory to the Company and the Security Registrar duly executed, by the Holder thereof or his attorney duly authorized in
writing. As a condition to the registration of transfer of any Restricted Securities, the Company or the Trustee may require evidence satisfactory to them as to the compliance with the restrictions set forth in the legend on such securities.

 No service charge shall be made for any registration of transfer or exchange of Securities, but the Company may require payment of a sum
sufficient to cover any tax or other governmental charge that may be imposed in connection with any registration of transfer or exchange of Securities, other than exchanges pursuant to Section 3.04 not involving any transfer. 
 The Company shall not be required to exchange or register a transfer of any Security (i) during the 15-day period immediately preceding the mailing
of any notice of redemption of any Security, (ii) after any notice of redemption has been given to Holders, except, where such notice provides that such Security is to be redeemed only in part, the Company shall be required to exchange or
register a transfer of the portion thereof not to be redeemed, (iii) that has been surrendered for conversion or (iv) as to which a Fundamental Change Repurchase 

  

 15 

 
Notice has been delivered and not withdrawn, except, where such Fundamental Change Repurchase Notice provides that such Security is to be purchased only in
part, the Company shall be required to exchange or register a transfer of the portion thereof not to be purchased. 
 (a)
Neither the Trustee nor any of its agents shall (i) have any duty to monitor compliance with or with respect to any federal or state or other securities or tax laws or (ii) have any duty to obtain documentation relating to any transfers or
exchanges other than as specifically required hereunder. 
 Section 3.06. Mutilated, Destroyed, Lost and Stolen Securities. If
any mutilated Security is surrendered to the Trustee, the Company shall execute and the Trustee shall authenticate and deliver in exchange therefor a new Security of like tenor and Principal Amount and bearing a number not contemporaneously
outstanding. 
 If there shall be delivered to the Company and the Trustee (i) evidence to their satisfaction of the destruction, loss
or theft of any Security and (ii) such security or indemnity as may be required by them to save each of them and any agent of either of them harmless, then, in the absence of notice to the Company or the Trustee that such Security has been
acquired by a bona fide purchaser, the Company shall execute and the Trustee shall authenticate and deliver, in lieu of any such destroyed, lost or stolen Security, a new Security of like tenor and Principal Amount and bearing a number not
contemporaneously outstanding. 
 In case any such mutilated, destroyed, lost or stolen Security has become or is about to become due and
payable or has been called for redemption in full, the Company in its discretion may, instead of issuing a new Security, pay such Security. 
 Upon the issuance of any new Security under this Section 3.06, the Company may require payment by the Holder of a sum sufficient to cover any tax or other governmental charge that may be imposed in relation thereto and any other
expenses (including the fees and expenses of the Trustee) connected therewith. 
 Every new Security issued pursuant to this
Section 3.06 in lieu of any destroyed, lost or stolen Security shall constitute an original additional contractual obligation of the Company, whether or not the destroyed, lost or stolen Security shall be at any time enforceable by anyone, and
shall be entitled to all the benefits of this Indenture equally and proportionately with any and all other Securities duly issued hereunder. 
 The provisions of this Section are exclusive and shall preclude (to the extent lawful) all other rights and remedies with respect to the replacement or payment of mutilated, destroyed, lost or stolen Securities. 
 Section 3.07. Persons Deemed Owners. Prior to due presentment of a 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 such Security is registered as the owner of such Security for the purpose of receiving payment of the principal of and interest on such Security and for all other purposes
whatsoever, whether or not such Security be overdue, and neither the Company, the Trustee nor any agent of the Company or the Trustee shall be affected by notice to the contrary. 
  

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 Section 3.08. Book-Entry Provisions for Global Securities. (a) The Global Securities
initially shall (i) be registered in the name of the Depositary or the nominee of such Depositary and (ii) be delivered to the Trustee as custodian for the Depositary. 
 (b) Members of, or participants in, the Depositary (“Agent Members”) shall have no rights under this
Indenture with respect to any Global Security held on their behalf by the Depositary, or the Trustee as its custodian, or under the Global Security, and the Depositary may be treated by the Company, the Trustee and any agent of the Company or the
Trustee as the absolute owner of the Global Security for all purposes whatsoever. Notwithstanding the foregoing, nothing herein shall prevent the Company, the Trustee or any agent of the Company or the Trustee from giving effect to any written
certification, proxy or other authorization furnished by the Depositary or impair, as between the Depositary and its Agent Members, the operation of customary practices governing the exercise of the rights of any Holder. 
 (c) Transfers of the Global Securities shall be limited to transfers in whole, but not in part, to the Depositary, its successors or their
respective nominees. Interests of beneficial owners in a Global Security may be transferred or exchanged, in whole or in part, for Physical Securities in accordance with the rules and procedures of the Depositary and the provisions of
Section 3.09. In addition, Physical Securities shall be transferred to all beneficial owners in exchange for their beneficial interests in the Global Securities if (A) such Depositary has notified the Company (or the Company becomes aware)
that the Depositary (i) is unwilling or unable to continue as Depositary for such Global Security or (ii) has ceased to be a clearing agency registered under the Exchange Act when the Depositary is required to be so registered to act as
such Depositary and, in either such case, no successor Depositary shall have been appointed within 90 days of such notification or of the Company becoming aware of such event; or (B) there shall have occurred and be continuing an Event of
Default with respect to such Global Security and the Outstanding Securities shall have become due and payable pursuant to Section 5.02 and the Trustee requests that Physical Securities be issued. 
 (d) In connection with any transfer or exchange of a portion of the beneficial interest in the Global Security to beneficial owners
pursuant to clause (b) of this Section 3.08, the Security Registrar shall (if one or more Physical Securities are to be issued) reflect on its books and records the date and a decrease in the Principal Amount of the Global Security in an
amount equal to the Principal Amount of the beneficial interest in the Global Security to be transferred, and the Company shall execute, and the Trustee shall authenticate and deliver, one or more Physical Securities of like tenor and amount.

 (e) In connection with the transfer of the entire Global Security to beneficial owners pursuant to clause (b) of this
Section 3.08, the Global Security shall be deemed to be surrendered to the Trustee for cancellation, and the Company shall execute, and the Trustee shall authenticate and deliver, to each beneficial owner identified by the Depositary in
exchange for its beneficial interest in the Global Security, an equal aggregate Principal Amount of Physical Securities of authorized denominations and the same tenor. 
  

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 (f) The Holder of the Global Securities may grant proxies and otherwise authorize any
Person, including Agent Members and Persons that may hold interests through Agent Members, to take any action which a Holder is entitled to take under this Indenture or the Securities. 
 (g) The Trustee shall have no responsibility or obligation to any beneficial owner of a Global Security, a member or, or a participant in
the Depositary or other Person with respect to the accuracy of the books or records, or the acts or omissions, of the Depositary or its nominee or of any participant or member thereof, with respect to any ownership interest in the Securities or with
respect to the delivery to any participant, member, beneficial owner or other Person (other than the Depositary) of any notice (including any notice of redemption) or the payment of any amount, under or with respect to such Securities. All notices
and communications to be given to the Holders and all payment to be made to Holders under the Securities shall be given or made only to or upon the order of the registered Holders (which shall be the Depositary or its nominee in the case of a Global
Security). The rights of beneficial owners in any Global Security shall be exercised only through the Depositary subject to the applicable procedures of the Depositary. The Trustee may rely on information furnished by the Depositary with respect to
its members, participants and any beneficial owners. 
 Section 3.09. Cancellation and Transfer Provisions. The Company at any
time may deliver to the Trustee for cancellation any Securities previously authenticated and delivered hereunder which the Company may have acquired in any manner whatsoever, and may deliver to the Trustee for cancellation any Securities previously
authenticated hereunder which the Company has not issued and sold. The Trustee shall cancel and dispose of all Securities surrendered for registration of transfer, exchange, payment, purchase, repurchase, redemption, conversion (pursuant to Article
13 hereof) or cancellation in accordance with its customary practices. If the Company shall acquire any of the Securities, such acquisition shall not operate as a redemption or satisfaction of the indebtedness represented by such Securities unless
and until the same are delivered to the Trustee for cancellation. The Company may not issue new Securities to replace Securities it has paid in full or delivered to the Trustee for cancellation. 
 The Security Registrar shall retain, in accordance with its customary procedures, copies of all letters, notices and other written communications
received pursuant to this Section 3.09. The Company shall have the right to inspect and make copies of all such letters, notices or other written communications at any reasonable time upon the giving of reasonable written notice to the Security
Registrar. 
 The Trustee shall have no obligation or duty to monitor, determine or inquire as to compliance with any restrictions on
transfer imposed under this Indenture or under applicable law with respect to any transfer of any interest in any Security (including any transfers between or among Depositary participants, members or beneficial owners in any Global Security) other
than to require delivery of such certificates and other documentation or evidence as are expressly required by the terms of this Indenture, and to examine the same to determine substantial compliance as to form with the express requirements hereof.

  

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 Section 3.10. CUSIP Numbers. In issuing the Securities, the Company may use “CUSIP”
numbers (if then generally in use), 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 correctness of
such numbers either as printed on the 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 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
4 
 Satisfaction And Discharge 
 Section 4.01. Satisfaction and Discharge of Indenture. This Indenture shall cease to be of further effect (except as to any surviving rights of registration of transfer or exchange of Securities herein expressly provided for),
and the Trustee, on demand of and at the expense of the Company, shall execute proper instruments acknowledging satisfaction and discharge of this Indenture, when 
 (a) either: 
 (i) all Securities theretofore authenticated and delivered (other than
(A) Securities which have been destroyed, lost or stolen and which have been replaced or paid as provided in Section 3.06 and (B) Securities for whose payment money has theretofore been deposited with the Trustee in trust or
segregated and held in trust by the Company and thereafter repaid to the Company or discharged from such trust as provided in Section 10.03) have been delivered to the Trustee for cancellation; or 
 (ii) all such Securities not theretofore delivered to the Trustee for cancellation have become due and payable and the Company has
deposited or caused to be deposited with the Trustee as trust funds in trust for the purpose an amount sufficient to pay and discharge the entire indebtedness evidenced by such Securities not theretofore delivered to the Trustee for cancellation;

 (b) the Company has paid or caused to be paid all other sums payable hereunder by the Company; and 
 (c) the Company has delivered to the Trustee an Officers’ Certificate and an Opinion of Counsel, each stating that all conditions
precedent herein provided for relating to the satisfaction and discharge of this Indenture have been complied with. 
 Notwithstanding the
satisfaction and discharge of this Indenture, the obligations of the Company to the Trustee under Section 6.07 and, if money shall have been deposited with the Trustee pursuant to clause (a)(ii) of Section 4.01, the obligations of the
Trustee under Section 4.02 and the last paragraph of Section 10.03 shall survive such satisfaction and discharge. 
 Section 4.02. Application of Trust Money. Subject to the provisions of the last paragraph of Section 10.03, all money deposited with the Trustee pursuant to Section 4.01 shall 
  

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be held in trust and applied by it, in accordance with the provisions of the Securities and this Indenture, to the payment, either directly or through any
Paying Agent (including the Company acting as its own Paying Agent) as the Trustee may determine, to the Persons entitled thereto, of the principal and interest for whose payment such money has been deposited with the Trustee. 
 ARTICLE 5 
 Remedies 
 Section 5.01. Events of Default. “Event of Default,” wherever used herein, means any one of the following events (whatever
the reason for such Event of Default and whether it shall be voluntary or involuntary or be 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): 
 (a) default in the payment of interest on any Securities when due and payable and such default continues for a
period of 30 days; or 
 (b) default in the payment of the Principal Amount, Redemption Price, Additional Interest Payment or
Fundamental Change Repurchase Price on any Security when it becomes due and payable; or 
 (c) default in the performance of
any covenant, agreement or condition of the Company in this Indenture or the Securities (other than a default specified in clause (a) or (b) above), and such default continues for a period of 60 days after there has 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 Outstanding Securities a written notice specifying such default and requiring it to be
remedied and stating that such notice is a “Notice of Default” hereunder; provided, however, that this clause (c) of Section 5.01 shall not apply to the Company’s obligations under Sections 7.04 and 10.06
of this Indenture; or 
 (d) default in the Company’s obligation to convert the Securities into shares of its Common
Stock upon exercise of a Holder’s conversion rights in accordance with Article 13 hereof and such default continues for a period of 10 days; or 
 (e) default by the Company or any Subsidiary in the payment of the principal or interest on any loan agreement or other instrument under which there may be outstanding, or by which there may be evidenced, any debt for
money borrowed in excess of $20.0 million in the aggregate of the Company and any Subsidiary (other than indebtedness for borrowed money secured only by the real property to which the indebtedness relates and which is non-recourse to the Company or
to such Subsidiary), whether such debt now exists or shall hereafter be created, resulting in such debt becoming or being declared due and payable prior to its stated maturity, and such acceleration shall not have been rescinded or annulled within
30 days after written notice has been received by the Company or such Subsidiary from the Trustee or by the Trustee, the Company and such Subsidiary by the Holders of at least 25% in Principal Amount of Outstanding Securities; provided that if any
time before a judgment or decree has been obtained by the Trustee as 

  

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hereinafter provided, such default is remedied or cured by the Company within the applicable cure period, or is waived by the holders of such indebtedness,
default under this clause (e) shall be deemed to have been remedied, cured or waived, as the case may be; or 
 (f)
failure by the Company to give the Fundamental Change Company Notice; or 
 (g) failure by the Company to file its annual or
quarterly reports in accordance with Sections 7.04 and 10.06 hereof or to comply with the requirements of Section 314(a)(1) of the Trust Indenture Act (a “Filing Failure”) and there has been given, by registered or certified
mail, notice of such Filing Failure to the Company and the Trustee by the Holders of at least 25% in aggregate Principal Amount of the Outstanding Securities and stating that such notice is a “Notice of Default” hereunder and such failure
shall continue for either (i) 60 days after such Notice of Default is given and the Company has not elected to pay the Extension Fee as provided in this Section 5.01 or (ii) 180 days after such Notice of Default is given if the
Company has elected to pay the Extension Fee as provided in this Section 5.01 (and no Event of Default under this Section 5.01(g) shall be deemed to occur until the passage of such 60 day or such 180 day period, as applicable); provided,
however, that for purposes of this Section 5.01(g), no Filing Failure shall be deemed to have occurred if the Company files such reports within any extension period pursuant to Rule 12b-25 of the Exchange Act or any successor rule thereto and
that no Notice of Default shall be given until after the expiration of such extension period; or 
 (h) the entry by a court
having jurisdiction in the premises of (i) a decree or order for relief in respect of the Company of a voluntary case or proceeding under any applicable Federal or State bankruptcy, insolvency, reorganization or other similar law or (ii) a
decree or order adjudging the Company as bankrupt or insolvent, or approving as properly filed a petition seeking reorganization, arrangement, adjustment or composition of or in respect of the Company under any applicable Federal or State law or
(iii) appointing a custodian, receiver, liquidator, assignee, trustee, sequestrator or other similar official of the Company or of any substantial part of its property, or ordering the winding up or liquidation of its affairs, and the
continuance of any such decree or order for relief or any such other decree or order unstayed and in effect for a period of 60 consecutive days; or 
 (i) the commencement by the Company of a voluntary case or proceeding under any applicable Federal or State bankruptcy, insolvency, reorganization or other similar law or of any other case or proceeding to be
adjudicated a bankrupt or insolvent, or the consent by it to the entry of a decree or order for relief in respect of the Company in an involuntary case or proceeding under any applicable Federal or State bankruptcy, insolvency, reorganization or
other similar law or to the commencement of any bankruptcy or insolvency case or proceeding against it, or the filing by it of a petition or answer or consent seeking reorganization or relief under any applicable Federal or State law, or the consent
by it to the filing of such petition or to the appointment of or taking possession by a custodian, receiver, liquidator, assignee, trustee, sequestrator or other similar official of the Company or of any substantial part of its property, or the
making 

  

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by it of an assignment for the benefit of creditors, or the admission by it in writing of its inability to pay its debts generally as they become due, or the
taking of corporate action by the Company in furtherance of any such action. 
 Upon the occurrence of a Filing Failure, the Company may
elect, within 60 days of the date Notice of Default is given to the Company and the Trustee in accordance with Section 5.01(g) (unless such Filing Failure is theretofore cured or waived pursuant to Section 5.12, as applicable), to pay to
the Holders a fee accruing at the rate of 1.00% per annum of the aggregate Principal Amount of the Outstanding Securities (the “Extension Fee”) on the terms and in the manner described in this paragraph. If the Company elects
to pay any Extension Fee, the Company, at any time on or before the close of business on the Business Day immediately prior to the 60th day after the date on which such Notice of Default is given to the Company and the Trustee in accordance with
Section 5.01(g), (i) shall notify, in the manner provided for in Sections 1.05 and 1.06, the Trustee and the Holders in writing of such election and (ii) shall deliver to the Trustee a certificate to that effect stating the date on
which the applicable Extension Fee pursuant to this paragraph will begin to accrue (as provided below). Such Extension Fee shall extend the cure period for a Filing Failure for a period of up to 120 days (the “Extension Period”).
The Extension Fee shall be paid on the same times and in the same manner as interest shall be paid in accordance with this Indenture. The Extension Fee shall accrue on the Securities from the date that is 60 days after the date Notice of Default is
given by the Holders in accordance with Section 5.01(g) to, but excluding, the earlier of (i) the date on which the Company has made the filings initially giving rise to the Filing Failure and (ii) the date that is 180 days after the
date Notice of Default is given by the Holders in accordance with Section 5.01(g). Notwithstanding the foregoing, if an additional Filing Failure occurs during an Extension Period, the Securities will only be subject to acceleration pursuant to
Section 5.02 hereof for such additional Filing Failure at the earlier of (x) the end of the Extension Period and (y) in the event that the Company has agreed to pay an Extension Fee in accordance with the terms of this
Section 5.01 as to such additional Filing Failure, the end of the Extension Period as to such additional Filing Failure. For the avoidance of doubt, notwithstanding the occurrence of multiple concurrent Filing Failures, the total Extension Fee
accruing or payable at any time shall not exceed the rate provided for in this paragraph. 
 Section 5.02. Acceleration of Maturity;
Rescission and Annulment. (a) If an Event of Default (other than those specified in clauses (h) and (i) of Section 5.01) occurs and is continuing, then and in every such case the Trustee or the Holders of not less than 25% in
aggregate Principal Amount of the Outstanding Securities may declare the Principal Amount plus accrued and unpaid interest on all the Outstanding Securities to be due and payable immediately, by a notice in writing to the Company (and to the Trustee
if given by Holders), and upon any such declaration such Principal Amount plus accrued and unpaid interest shall become immediately due and payable. 
 Notwithstanding the foregoing, in the case of an Event of Default specified in clauses (h) and (i) of Section 5.01, the Principal Amount plus accrued and unpaid interest on all Outstanding Securities
will ipso facto become due and payable without any declaration or other Act on the part of the Trustee or any Holder. 
  

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 (b) At any time after such a declaration of acceleration has been made and before a
judgment or decree for payment of the money due has been obtained by the Trustee as hereinafter in this Article 5 provided, the Holders of a majority in aggregate Principal Amount of the Outstanding Securities, by written notice to the Company and
the Trustee, may rescind and annul such declaration and its consequences if such rescission and annulment will not conflict with any judgment or decree of a court of competent jurisdiction and: 
 (i) the Company has paid or deposited with the Trustee a sum sufficient to pay: 
 (A) all overdue interest on the Securities, 
 (B) the Principal Amount plus accrued and unpaid interest, Redemption Price or Fundamental Change Repurchase Price, as applicable, on any
Securities which have become due otherwise than by such declaration of acceleration, and 
 (C) all sums paid or advanced by
the Trustee hereunder and the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel and any other amounts due the Trustee under Section 6.07; and 
 (ii) all Events of Default, other than the non-payment of the Principal Amount plus accrued and unpaid interest on Securities which have
become due solely by such declaration of acceleration, have been cured or waived as provided in Section 5.12. 
 No such rescission
shall affect any subsequent default or impair any right consequent thereon. 
 Section 5.03. Collection of Indebtedness and Suits for
Enforcement by Trustee. The Company covenants that if a default is made in the payment of the Principal Amount plus accrued and unpaid interest at the Maturity thereof or in the payment of the Redemption Price, Additional Interest Payment or the
Fundamental Change Repurchase Price in respect of any Security, the Company will, upon demand of the Trustee, pay to it, for the benefit of the Holders of such Securities, the whole amount then due and payable on such Securities, and, in addition
thereto, such further amount as shall be sufficient to cover the costs and expenses of collection, including the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel. 
 If an Event of Default occurs and is continuing, the Trustee may, but shall not be obligated to, pursue any available remedy to collect the payment of
the principal amount plus accrued but unpaid interest on the Securities or to enforce the performance of any provision of the Securities or this Indenture. The Trustee may maintain a proceeding even if the Trustee does not possess any of the
Securities or does not produce any of the Securities 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. 
  

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 Section 5.04. Trustee May File Proofs of Claim. In case of any judicial proceeding relative
to the Company (or any other obligor upon the Securities), its property or its creditors, the Trustee shall be entitled and empowered, by intervention in such proceeding or otherwise, to take any and all actions authorized under the Trust Indenture
Act in order to have claims of the Holders and the Trustee allowed in any such proceeding. In particular, the Trustee shall be authorized to collect and receive any moneys or other property payable or deliverable on any such claims and to distribute
the same; and any custodian, receiver, assignee, trustee, liquidator, sequestrator or other similar official in any such judicial proceeding is hereby authorized by each Holder to make such 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 counsel and any other amounts due the
Trustee under Section 6.07. 
 No provision of this Indenture shall be deemed to authorize the Trustee to authorize or consent to or
accept or adopt on behalf of any Holder any plan of reorganization, arrangement, adjustment or composition affecting the Securities or the rights of any Holder thereof or to authorize the Trustee to vote in respect of the claim of any Holder in any
such proceeding. 
 The Trustee shall be entitled to participate as a member of any official committee of creditors of the Company as it
deems necessary or advisable. 
 Section 5.05. Application of Money Collected. Any money collected by the Trustee pursuant to
this Article shall be applied in the following order, at the date or dates fixed by the Trustee and, in case of the distribution of such money to Holders, upon presentation of the Securities and the notation thereon of the payment if only partially
paid and upon surrender thereof if fully paid: 
 FIRST: To the payment of all amounts due the Trustee under
Section 6.07; 
 SECOND: To the payment of the amounts then due and unpaid on the Securities for the Principal Amount,
Redemption Price, Additional Interest Payment, Fundamental Change Repurchase Price or interest, as the case may be, in respect of which or for the benefit of which such money has been collected, ratably, without preference or priority of any kind,
according to the amounts due and payable on such Securities; and 
 THIRD: To the Company. 
 Section 5.06. Limitation on Suits. No Holder of any Security shall have any right to institute any proceeding, judicial or otherwise, with
respect to this Indenture, or for the appointment of a receiver or trustee, or for any other remedy hereunder (other than in the case of an Event of Default specified in clause (a) or (b) of Section 5.01), unless: 
 (i) such Holder has previously given written notice to the Trustee of a continuing Event of Default; 
  

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 (ii) the Holders of not less than 25% in aggregate Principal Amount of the Outstanding
Securities shall have made written request to the Trustee to institute proceedings in respect of such Event of Default in its own name as Trustee hereunder; 
 (iii) such Holder or Holders have offered to the Trustee indemnity reasonably satisfactory to it against the costs, expenses and
liabilities to be incurred in compliance with such request; 
 (iv) the Trustee for 60 days after its receipt of such notice,
request and offer of security or indemnity has failed to institute any such proceeding; and 
 (v) no direction, in the
opinion of the Trustee, inconsistent with such written request has been given to the Trustee during such 60-day period by the Holders of a majority in aggregate Principal Amount of the Outstanding Securities; 
 it being understood and intended that no one or more Holders shall have any right in any manner whatever by virtue of, or by availing itself of, any provision of this
Indenture to affect, disturb or prejudice the rights of any other Holders, or to obtain or to seek to obtain priority or preference over any other Holders or to enforce any right under this Indenture, except in the manner herein provided and for the
equal and ratable benefit of all the Holders. 
 Section 5.07. Unconditional Right of Holders to Receive Payment. Notwithstanding
any other provision of this Indenture, the right of any Holder to receive payment of the Principal Amount, Redemption Price, Fundamental Change Repurchase Price, Additional Interest Payment or interest in respect of the Securities held by such
Holder, on or after the respective due dates expressed in the Securities or any Redemption Date or Fundamental Change Repurchase Date, as applicable, and to convert the Securities in accordance with Article 13, 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 adversely without the consent of such Holder. 
 Section 5.08. Restoration of Rights and Remedies. If the Trustee or any Holder has instituted any proceeding to enforce any right or remedy under this Indenture and such proceeding has been discontinued or
abandoned for any reason, or has been determined adversely to the Trustee or to such Holder, then and in every such case, subject to any determination in such proceeding, the Company, the Trustee and the Holders shall be restored severally and
respectively to their former positions hereunder and thereafter all rights and remedies of the Trustee and the Holders shall continue as though no such proceeding had been instituted. 
 Section 5.09. Rights and Remedies Cumulative. Except as otherwise provided with respect to the replacement or payment of mutilated,
destroyed, lost or stolen Securities in the last paragraph of Section 3.06, no right or remedy herein conferred upon or reserved to the Trustee or to the Holders is intended to be exclusive of any other right or remedy, and every right and
remedy shall, to the extent permitted by law, be cumulative and in addition to every other right and remedy given hereunder or now or hereafter existing at law or in equity or otherwise. The assertion or employment of any right or remedy hereunder
shall not prevent the concurrent assertion or employment of any other appropriate right or remedy. 
  

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 Section 5.10. Delay or Omission Not Waiver. No delay or omission of the Trustee or of any
Holder of any Security to exercise any right or remedy accruing upon any Event of Default shall impair any such right or remedy or constitute a waiver of any such Event of Default or an acquiescence therein. Every right and remedy given by this
Article or by law to the Trustee or to the Holders may be exercised from time to time, and as often as may be deemed expedient, by the Trustee or by the Holders, as the case may be. 
 Section 5.11. Control by Holders. The Holders of a majority in Principal Amount of the Outstanding Securities 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, provided that: 
 (i) such direction shall not be in conflict with any rule of law or with this Indenture; 
 (ii) the Trustee may take any other action deemed proper by the Trustee which is not inconsistent with such direction; and 
 (iii) the Trustee may refuse to follow any direction that may involve the Trustee in personal liability for which the Trustee would not
otherwise be entitled to indemnification pursuant to the terms of this Indenture. 
 Section 5.12. Waiver of Past Defaults. The
Holders of not less than a majority in Principal Amount of the Outstanding Securities may on behalf of the Holders of all the Securities waive any past Default hereunder and its consequences, except a Default: 
 (i) Described in clause (a) or (b) of Section 5.01; or 
 (ii) in respect of a covenant or provision hereof which under Article 9 cannot be modified or amended without the consent of the Holder of
each Outstanding Security affected. 
 Upon any such waiver, such Default shall cease to exist, and any Event of Default arising therefrom
shall be deemed to have been cured, for every purpose of this Indenture; but no such waiver shall extend to any subsequent or other Default or impair any right consequent thereon. 
 Section 5.13. Undertaking for Costs. 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, in either case in respect of the Securities, a court may require any party litigant in such suit to file an undertaking to pay the costs of the suit, and the court may assess reasonable
costs, including reasonable attorney’s 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; but the provisions of this Section 5.13
shall not apply to any suit instituted by the Company, to any suit instituted by the Trustee, to any suit instituted by any Holder, or group of 

  

 26 

 
Holders, holding in the aggregate more than 10% in Principal Amount of the Outstanding Securities, or to any suit instituted by any Holder for the
enforcement of the payment of the Principal Amount or interest on any Security on or after Maturity of such Security, the Redemption Price or the Fundamental Change Repurchase Price. 
 Section 5.14. Waiver of Stay or Extension Laws. The Company covenants (to the extent that it may lawfully do so) that it will not at any time
insist upon, or plead, or in any manner whatsoever claim or take the benefit or advantage of, any stay, or extension law wherever enacted, now or at any time hereafter in force, which may affect the covenants or the performance of this 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 covenants that it will not hinder, delay or impede the execution of any power herein granted to the Trustee, but will
suffer and permit the execution of every such power as though no such law had been enacted. 
 ARTICLE 6 
 The Trustee 
 Section 6.01. Certain
Duties and Responsibilities. The duties and responsibilities of the Trustee shall be as provided by the Trust Indenture Act, subject to the terms of this Indenture. Except during the continuance of an Event of Default known to a Responsible
Officer of the Trustee, the Trustee undertakes to perform such duties and only such duties as are specifically set forth in this Indenture, and no implied covenants or obligations shall be read into this Indenture against the Trustee. In case an
Event of Default with respect to the Securities has occurred (which has not been cured or waived), the Trustee shall exercise 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 person would exercise or use under the circumstances in the conduct of such person’s own affairs. Notwithstanding the foregoing, no provision of this Indenture shall require the Trustee to expend or risk its own funds or otherwise incur
any financial liability in the performance of any of its duties hereunder, or in the exercise of any of its rights or powers, if it shall have reasonable grounds for believing that repayment of such funds or indemnity satisfactory to it 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 6.01. 
 Section 6.02. Notice of Defaults. The Trustee shall give the Holders notice of any
Default known to a Responsible Officer of the Trustee within 60 days after the occurrence thereof; provided, that (except in the case of any Default in the payment of Principal Amount or interest on any of the Securities, Redemption Price,
Fundamental Change Repurchase Price or Additional Interest Payment), the Trustee shall be protected in withholding such notice if and so long as a trust committee of directors or trustees and/or a Responsible Officer of the Trustee in good faith
determines that the withholding of such notice is in the interest of the Holders of Securities. 
 Section 6.03. Certain Rights Of
Trustee. Subject to the provisions of Section 6.01: 
 (a) the Trustee may conclusively rely and shall be protected
in acting or refraining from acting upon any resolution, certificate, statement, instrument, opinion, report, 

  

 27 

 
notice, request, direction, consent, order, bond, debenture, note, other evidence of indebtedness or other paper or document believed by it to be genuine and
to have been signed or presented by the proper party or parties; 
 (b) any request or direction of the Company mentioned
herein shall be sufficiently evidenced by a Company Request or Company Order and any resolution of the Board of Directors of the Company may be sufficiently evidenced by a Board Resolution; 
 (c) whenever in the administration of this Indenture the Trustee shall deem it desirable that a matter be proved or established prior to
taking, suffering or omitting any action hereunder, the Trustee (unless other evidence be herein specifically prescribed) may, in the absence of bad faith on its part, request and rely upon an Officers’ Certificate; 
 (d) the Trustee may consult with counsel of its selection and the advice of such counsel or any Opinion of Counsel shall be full and
complete authorization and protection in respect of any action taken, suffered or omitted by it hereunder in good faith and in reliance thereon; 
 (e) the Trustee shall be under no obligation to exercise any of the rights or powers vested in it by this Indenture at the request or direction of any of the Holders pursuant to this Indenture, unless such Holders
shall have offered to the Trustee security or indemnity reasonably satisfactory to it against the costs, expenses and liabilities which might be incurred by it in compliance with such request or direction; 
 (f) 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, bond, debenture, note, other evidence of indebtedness or other paper or document, but the Trustee, in its discretion, may make such further inquiry or investigation into such
facts or matters as it may see fit; and, if the Trustee shall determine to make such further inquiry or investigation, it shall be entitled to examine the books, records and premises of the Company, personally or by agent or attorney at the sole
cost of the Company and shall incur no liability or additional liability of any kind by reason of such inquiry or investigation; 
 (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 with due care by it hereunder; 
 (h) the Trustee shall not be charged with knowledge of any
Default or Event of Default with respect to the Securities unless either (i) a Responsible Officer shall have actual knowledge of such Default or Event of Default or (ii) written notice of such Default or Event of Default shall have been
received by the Trustee from the Company or any other obligor on such Securities or by any Holder of such Securities; 
 (i)
the Trustee shall not be liable for any action taken, suffered 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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 (j) the rights, privileges, protections, immunities and benefits given to the Trustee,
including, without limitation, its right to be indemnified, are extended to, and shall be enforceable by, the Trustee in each of its capacities hereunder, and each agent, custodian, director, officer, employee and other Person employed to act
hereunder; 
 (k) the Trustee may request that the Company deliver an Officers’ Certificate setting forth the names of
individuals and/or titles of officers authorized at such time to take specified actions pursuant to this Indenture, which Officers’ Certificate may be signed by any person authorized to sign an Officers’ Certificate, including any person
specified as so authorized in any such certificate previously delivered and not superseded; and 
 (l) the permissive rights
of the Trustee to take certain actions under this Indenture shall not be construed as a duty unless so specified herein. 
 Section 6.04. Not Responsible for Recitals. The recitals contained herein and in the Securities, except the Trustee’s certificates of authentication, shall be taken as the statements of the Company, and the Trustee assumes
no responsibility for their correctness. The Trustee makes no representations as to the validity, sufficiency or priority of this Indenture or of the Securities. The Trustee shall not be accountable for the use or application by the Company of
Securities or the proceeds thereof. 
 Section 6.05. May Hold Securities. The Trustee, any Paying Agent, any Security
Registrar or any other agent of the Company, in its individual or any other capacity, may become the owner or pledgee of Securities and, subject to Section 6.08 and 6.13, may otherwise deal with the Company with the same rights it would have if
it were not Trustee, Paying Agent, Security Registrar or such other agent. 
 Section 6.06. Money Held in Trust. Money held by
the Trustee in trust hereunder 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 money received by it hereunder except as otherwise agreed in writing with the
Company. 
 Section 6.07. Compensation and Reimbursement. The Company agrees: 
 (i) to pay to the Trustee from time to time such compensation for all services rendered by it hereunder as the Company and the Trustee
shall from time to time agree in writing (which compensation shall not be limited by any provision of law in regard to the compensation of a trustee of an express trust); 
 (ii) except as otherwise expressly provided herein, to reimburse the Trustee upon its request for all reasonable expenses, disbursements
and advances incurred or made by the Trustee in accordance with any provision of this Indenture (including the reasonable compensation and the expenses and disbursements of its agents and counsel), except any such expense, disbursement or advance as
may be attributable to its negligence or willful misconduct; and 
  

 29 

 (iii) to indemnify the Trustee and any predecessor Trustee for, and to hold it harmless
against, any loss, liability or expense (including the reasonable compensation, expenses and disbursements of its counsel), including taxes (other than taxes based upon, measured by or determined by the income of the Trustee) incurred without
negligence or willful misconduct on its part, arising out of or in connection with the acceptance or administration of this trust, including the reasonable costs and expenses of defending itself against any claim (whether assessed by the Company, by
any Holder or any other Person) or liability in connection with the exercise or performance of any of its powers or duties hereunder. 
 The
obligations of the Company under this Section 6.07 shall survive the resignation or removal of the Trustee and the satisfaction and discharge of this Indenture. To secure the Company’s payment obligations in this Section 6.07, the
Trustee shall have a lien prior to the Securities on all money or property held or collected by the Trustee. Such lien shall survive the resignation or removal of the Trustee and the satisfaction and discharge of this Indenture. When the Trustee
incurs expenses or renders services after a Default or an Event of Default specified in clauses (h) or (i) of Section 5.01 occurs, the expenses and the compensation for the services (including the fees and expenses of its agents and
counsel) are intended to constitute expenses of administration under Title 11 of the U.S. Code or any other similar foreign, federal or state law for the relief of debtors. 
 Section 6.08. Disqualification; Conflicting Interests. If the Trustee has or shall acquire a conflicting interest within the meaning of the
Trust Indenture Act, the Trustee shall either eliminate such interest or resign, to the extent and in the manner provided by, and subject to the provisions of, the Trust Indenture Act and this Indenture. 
 Section 6.09. Corporate Trustee Required; Eligibility. There shall at all times be a Trustee hereunder which shall be a Person that is
eligible pursuant to the Trust Indenture Act to act as such and has, or whose parent banking company has, a combined capital and surplus of at least $50,000,000. If such Person publishes reports of condition at least annually, pursuant to law or to
the requirements of said supervising or examining authority, then for the purposes of this Section 6.09, the combined capital and surplus of such Person shall be deemed to be its combined capital and surplus as set forth in its most recent
report of condition so published. If at any time the Trustee shall cease to be eligible in accordance with the provisions of this Section 6.09, it shall resign immediately in the manner and with the effect hereinafter specified in this Article.

 Section 6.10. Resignation and Removal; Appointment of Successor. (a) No resignation or removal of the Trustee and no
appointment of a successor Trustee pursuant to this Article 6 shall become effective until the acceptance of appointment by the successor Trustee under Section 6.11. 
 (b) The Trustee may resign at any time by giving written notice thereof to the Company. If an instrument of acceptance by a successor
Trustee shall not have been delivered to the Trustee within 30 days after the giving of such notice of resignation, the resigning Trustee may petition any court of competent jurisdiction at the expense of the Trustee for the appointment of a
successor Trustee. 
  

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 (c) The Trustee may be removed at any time by Act of the Holders of majority in Principal
Amount of the Outstanding Securities, delivered to the Trustee and to the Company. If an instrument of acceptance by a successor Trustee shall not have been delivered to the Trustee within 30 days after the notice of removal, the Trustee being
removed may petition, at the expense of the Company, any court of competent jurisdiction for the appointment of a successor Trustee with respect to the Securities. 
 (d) If at any time: 
 (i) the Trustee shall fail to comply with Section 6.08 after written request therefor by the Company or by any Holder who has been a bona fide Holder of a Security for at least six months, or 
 (ii) the Trustee shall cease to be eligible under Section 6.09 and shall fail to resign after written request therefor by the Company
or by any such Holder, or 
 (iii) the Trustee shall become incapable of acting or shall be adjudged a bankrupt or insolvent,
or 
 (iv) a receiver of the Trustee or of its property shall be appointed or any public officer shall take charge or control
of the Trustee or of its property or affairs for the purpose of rehabilitation, conservation or liquidation, 
 then, in any such case, (A) the Company
by a Company Order may remove the Trustee, or (B) subject to Section 5.13, any Holder who has been a bona fide Holder of a Security for at least six months may, on behalf of such Holder and all others similarly situated, petition any court
of competent jurisdiction for the removal of the Trustee and the appointment of a successor Trustee. 
 (e) If the Trustee
shall resign, be removed or become incapable of acting, or if a vacancy shall occur in the office of Trustee for any cause, the Company, by a Company Order, shall promptly appoint a successor Trustee. If, within one year after such resignation,
removal or incapability, or the occurrence of such vacancy, a successor Trustee shall be appointed by Act of the Holders of a majority in Principal Amount of the Outstanding Securities delivered to the Company and the retiring Trustee, the successor
Trustee so appointed shall, forthwith upon its acceptance of such appointment, become the successor Trustee and supersede the successor Trustee appointed by the Company. If no successor Trustee shall have been so appointed by the Company or the
Holders and accepted appointment in the manner hereinafter provided, any Holder who has been a bona fide Holder of a Security for at least six months may, on behalf of himself and all others similarly situated, petition any court of competent
jurisdiction for the appointment of a successor Trustee. 
 (f) The Company shall give notice of each resignation and each
removal of the Trustee and each appointment of a successor Trustee to all Holders in the manner provided in Section 1.06. Each notice shall include the name of the successor Trustee and the address of its Corporate Trust Office. 
  

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 Section 6.11. Acceptance of Appointment by Successor. Every successor Trustee appointed
hereunder shall execute, acknowledge and deliver to the Company and to the retiring Trustee an instrument accepting such appointment, and thereupon the resignation or removal of the retiring Trustee shall become effective and such successor Trustee,
without any further act, deed or conveyance, shall become vested with all the rights, powers, trusts and duties of the retiring Trustee; but, on request of the Company or the successor Trustee, such retiring Trustee shall, upon payment of its
charges, execute and deliver an instrument transferring to such successor Trustee all the rights, powers and trusts of the retiring Trustee and shall duly assign, transfer and deliver to such successor Trustee all property and money held by such
retiring Trustee hereunder. Upon request of any such successor Trustee, the Company shall execute any and all instruments for more fully and certainly vesting in and confirming to such successor Trustee all such rights, powers and trusts.

 No successor Trustee shall accept its appointment unless at the time of such acceptance such successor Trustee shall be qualified and
eligible under this Article 6. 
 Notwithstanding the resignation or removal of the Trustee, the Company’s obligations under
Section 6.07 shall continue for the benefit of the retiring trustee with respect to expenses and liabilities incurred by it prior to such resignation or removal. 
 Section 6.12. Merger, Conversion, Consolidation or Succession to Business. Any corporation into which the Trustee may be merged or converted or with which it may be consolidated, or any corporation
resulting from any merger, conversion or consolidation to which the Trustee shall be a party, or any corporation succeeding to all or substantially all the corporate trust business of the Trustee by sale or otherwise, shall be the successor of the
Trustee hereunder, provided such corporation shall be otherwise qualified and eligible under this Article 6, without the execution or filing of any paper or any further act on the part of any of the parties hereto. In case any Securities shall have
been authenticated, but not delivered, by the Trustee then in office, any successor by merger, conversion or consolidation to such authenticating Trustee may adopt such authentication and deliver the Securities so authenticated with the same effect
as if such successor Trustee had itself authenticated such Securities. 
 Section 6.13. Preferential Collection of Claims
Against. If and when the Trustee shall be or become a creditor of the Company (or any other obligor upon the Securities), the Trustee shall be subject to the provisions of the Trust Indenture Act regarding the collection of claims against the
Company (or any such other obligor). 
 ARTICLE 7 
 Holders’ Lists And Reports By Trustee 
 Section 7.01. Company to Furnish Trustee Names and
Addresses of Holders. The Company will furnish or cause to be furnished to the Trustee: 
  

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 (i) semi-annually, not more than 15 days after each Record Date, 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 
 (ii) 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 content as of a date not more than 15 days prior to the time such list is furnished; 
 excluding from any such list names and addresses received by the Trustee in its capacity as Security Registrar; provided, however, that no such list need be
furnished so long as the Trustee is acting as Security Registrar. 
 Section 7.02. Preservation of Information; Communications to
Holders. (a) The Trustee shall preserve, in as current a form as is reasonably practicable, the names and addresses of Holders contained in the most recent list furnished to the Trustee as provided in Section 7.01 and the names and
addresses of Holders received by the Trustee in its capacity as Security Registrar. The Trustee may destroy any list furnished to it as provided in Section 7.01 upon receipt of a new list so furnished. 
 (b) The rights of Holders to communicate with other Holders with respect to their rights under this Indenture or under the Securities, and
the corresponding rights and duties of the Trustee, shall be as provided by the Trust Indenture Act. 
 (c) Every Holder of
Securities, by receiving and holding the same, agrees with the Company and the Trustee that neither the Company nor the Trustee nor any agent of either of them shall be held accountable by reason of any disclosure of information as to names and
addresses of Holders made pursuant to the Trust Indenture Act. 
 Section 7.03. Reports By Trustee. (a) The Trustee shall
transmit to Holders such reports concerning the Trustee and its actions under this Indenture as may be required pursuant to the Trust Indenture Act at the times and in the manner provided pursuant thereto. Reports so required to be transmitted at
stated intervals of not more than 12 months shall be transmitted no later than July 15 in each calendar year, commencing on July 15, 2007. Each such report shall be dated as of a date not more than 60 days prior to the date of
transmission. 
 (b) A copy of each such report shall, at the time of such transmission to Holders, be filed by the Trustee
with each stock exchange, if any, upon which the Securities are listed, with the Commission and with the Company. The Company will notify the Trustee when the Securities are listed on any stock exchange or of any delisting thereof. 
 Section 7.04. Reports by Company. The Company shall file with the Trustee and the Commission, and transmit to Holders, such information,
documents and other reports, and such summaries thereof, as may be required pursuant to the Trust Indenture Act at the times and in the manner provided pursuant to such Act; provided that any such information, documents or reports required to be
filed with the Commission pursuant to Section 13 or 15(d) of the Exchange Act shall be filed with the Trustee within 15 days after the same is so required to be filed with the Commission. In the event the Company is not subject to
Section 13 or 15(d) of the Exchange 

  

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Act, it shall file with the Trustee upon request the information required to be delivered pursuant to Rule 144A(d)(4) under the Securities Act. It is
expressly understood that materials transmitted electronically by the Company to the Trustee shall be deemed filed with the Trustee for purposes of this Section 7.04. The Trustee shall not be under a duty to review or evaluate any report or
information delivered to the Trustee pursuant to the provisions of this Section 7.04 for the purposes of making such reports available to it and to the Holders of Securities who may request such information. Delivery of such reports,
information and documents to the Trustee as may be required under this Section 7.04 is for informational purposes only and the Trustee’s receipt of such shall not constitute constructive notice of any information contained therein or
determinable from information contained therein, including the Company’s compliance with any of its covenants hereunder (as to which the Trustee is entitled to rely exclusively on an Officers’ Certificate). 
 ARTICLE 8 
 Consolidation, Merger, Conveyance,
Transfer Or Lease 
 Section 8.01. Company May Consolidate, etc., Only on Certain Terms. The Company shall not consolidate with
or merge into any other Person or convey, transfer or lease its properties and assets substantially as an entirety to any Person, and the Company shall not permit any Person to consolidate with or merge into the Company or convey, transfer or lease
its properties and assets substantially as an entirety to the Company, unless: 
 (a) either (i) the Company shall be the
continuing Person or (ii) the Person (if other than the Company) formed by such consolidation or into which the Company is merged or the Person which acquires by conveyance or transfer, or which leases, the properties and assets of the Company
substantially as an entirety (the “Surviving Entity”), (1) shall be either (a) organized and validly existing under the laws of the United States of America, any State thereof or the District of Columbia, or
(b) organized under the laws of a jurisdiction outside the United States and has common stock traded on a national securities exchange in the United States and a worldwide total market capitalization of its equity securities before giving
effect to the consolidation or merger of at least US$2 billion, and (2) the Surviving Entity shall expressly assume, by an indenture supplemental hereto, executed and delivered to the Trustee, all of the obligations of the Company under the
Securities and this Indenture; 
 (b) immediately after giving effect to such transaction, no Event of Default, and no event
which, after notice or lapse of time or both, would become an Event of Default, shall have occurred and be continuing; and 
 (c) the Company or the Surviving Entity has delivered to the Trustee an Officers’ Certificate and an Opinion of Counsel, each stating that such consolidation, merger, conveyance, transfer or lease and, if a supplemental indenture is
required in connection with such transaction, such supplemental indenture comply with this Article 8 and Article 9, respectively. 
 Section 8.02. Successor Substituted. Upon any consolidation of the Company with, or merger of the Company into, any other Person or any conveyance, transfer or lease of the 

  

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properties and assets of the Company substantially as an entirety in accordance with Section 8.01, the successor Person formed by such consolidation or
into which the Company is merged or to which such conveyance, transfer or lease is made shall succeed to, and be substituted for, and may exercise every right and power of, the Company under this Indenture with the same effect as if such successor
Person had been named as the Company herein, and thereafter, except in the case of a lease, the predecessor Person shall be relieved of all obligations and covenants under this Indenture and the Securities. 
 ARTICLE 9 
 Supplemental Indentures 

Section 9.01. Supplemental Indentures Without Consent of Holders. Without the consent of any Holders, the Company, when authorized by a
Board Resolution, and the Trustee, at any time and from time to time, may enter into one or more indentures supplemental hereto, in form satisfactory to the Trustee, for any of the following purposes: 
 (i) to evidence the succession of another Person to the Company and the assumption by any such successor of the covenants of the Company
herein and in the Securities; or 
 (ii) to add to the covenants of the Company for the benefit of the Holders, or to
surrender any right or power herein conferred upon the Company; or 
 (iii) to provide for a successor Trustee with respect to
the Securities; or 
 (iv) to cure any ambiguity or defect, to correct or supplement any provision herein which may be
inconsistent with any other provision herein, or to make any other provisions with respect to matters or questions arising under this Indenture which shall not be inconsistent with the provisions of this Indenture; provided that such action pursuant
to this clause (iv) shall not adversely affect the interests of the Holders in any material respect; or 
 (v) to add any
additional Events of Default for the benefit of the Holders; or 
 (vi) to convey, transfer, assign, mortgage or pledge to the
Trustee as security for the Securities any property or assets; or 
 (vii) to increase the Conversion Rate of the Securities;
provided, however, that such increase shall be in accordance with the terms of this Indenture or shall not adversely affect the interests of the Holders of the Securities; or 
 (viii) to supplement any provision of this Indenture to such extent as shall be necessary to permit or facilitate the discharge of the
Securities; provided that such change or modification does not adversely affect the interests of the Holders of the Securities; or 
  

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 (ix) to add or modify any other provision herein with respect to matters or questions
arising hereunder which the Company and the Trustee may deem necessary or desirable and which would not reasonably be expected to adversely affect the interests of the Holders of Securities in any material respect. 
 Section 9.02. Supplemental Indentures With Consent of Holders. With the consent of the Holders of not less than a majority in Principal
Amount of the Outstanding Securities, by Act of said Holders delivered to the Company and the Trustee, the Company, when authorized by a Board Resolution, and the Trustee may enter into an indenture or indentures supplemental hereto for the purpose
of adding any provisions to or changing in any manner or eliminating any of the provisions of this Indenture or of modifying in any manner the rights of the Holders under this Indenture; provided, however, that no such supplemental indenture
shall, without the consent of the Holder of each Outstanding Security affected thereby: 
 (i) reduce the rate of or extend
the time for payment of interest, if any, on the Security; or 
 (ii) reduce the Principal Amount of, or extend the Stated
Maturity of, any Security; or 
 (iii) make any change that impairs or adversely affects the conversion rights of any
Securities; or 
 (iv) reduce the Redemption Price, the Repurchase Price or Fundamental Change Repurchase Price or the
Additional Interest Payment of any Security or amend or modify in any manner adverse to the Holders of Securities the Company’s obligation to make such payments, whether through an amendment or waiver of provisions in the covenants, definitions
or otherwise; or 
 (v) modify the provisions with respect to the right of Holders to cause the Company to repurchase
Securities upon a Fundamental Change in a manner adverse to Holders of Securities; or 
 (vi) make any interest or principal
on a Security payable in money other than that stated in the Security or other than in accordance with the provisions of this Indenture; or 
 (vii) impair the right of any Holder to receive payment of the Principal Amount of or interest, on a Holder’s Securities on or after the due dates therefor or to institute suit for the enforcement of any payment
on or with respect to such Holder’s Securities; or 
 (viii) reduce the quorum or voting requirements under this
Indenture; or 
 (ix) change the ranking of the Securities in a manner adverse to the Holders of the Securities; or

  

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 (x) make any change in the amendment provisions which require each Holder’s consent
or in the waiver provisions; or 
 (xi) reduce the percentage in Principal Amount of the Outstanding Securities, the consent
of whose Holders is required for any such supplemental indenture, or the consent of whose Holders is required for any waiver (of compliance with certain provisions of this Indenture or certain defaults hereunder and their consequences) provided for
in this Indenture; or 
 (xii) modify any of the provisions of this Section 9.02 or Section 5.12, except to increase
any such percentage or to provide that certain other provisions of this Indenture cannot be modified or waived without the consent of the Holder of each Outstanding Security affected thereby. 
 It shall not be necessary for any Act of Holders under this Section 9.02 to approve the particular form of any proposed supplemental indenture, but
it shall be sufficient if such Act shall approve the substance thereof. 
 Section 9.03. Execution of Supplemental Indentures. In
executing, or accepting the additional trusts created by, any supplemental indenture permitted by this Article 9 or the modifications thereby of the trusts created by this Indenture, the Trustee shall be provided with, and (subject to
Section 6.01) shall be fully protected in relying upon, in addition to the documents required by Section 1.02, an Opinion of Counsel stating that the execution of such supplemental indenture is authorized or permitted by this Indenture.
Subject to the preceding sentence, the Trustee shall sign such supplemental indenture if the same does not adversely affect the Trustee’s own rights, duties or immunities under this Indenture or otherwise. The Trustee may, but shall not be
obligated to, enter into any such supplemental indenture that adversely affects the Trustee’s own rights, duties or immunities under this Indenture or otherwise. 
 Section 9.04. Effect of Supplemental Indentures. Upon the execution of any supplemental indenture under this Article 9, this Indenture shall be modified in accordance therewith, and such supplemental
indenture shall form a part of this Indenture for all purposes; and every Holder of Securities theretofore or thereafter authenticated and delivered hereunder shall be bound thereby. 
 Section 9.05. Conformity with Trust Indenture Act. Every supplemental indenture executed pursuant to this Article shall conform to the
requirements of the Trust Indenture Act. 
 Section 9.06. Reference in Securities to Supplemental Indentures. Securities
authenticated and delivered after the execution of any supplemental indenture pursuant to this Article 9 shall 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 Securities so modified as to conform, in the opinion of the Trustee and the Company, to any such supplemental indenture may be prepared and executed by the Company and authenticated and delivered by the Trustee in exchange for
Outstanding Securities. 
  

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 ARTICLE 10 
 Covenants 
 Section 10.01. Payments. The Company shall duly and punctually make all payments in
respect of the Securities in accordance with the terms of the Securities and this Indenture. 
 Any payments made or due pursuant to this
Indenture shall be considered paid on the applicable date due if by 10:00 a.m., New York City time, on such date the Paying Agent holds, in accordance with this Indenture, cash sufficient to pay all such amounts then due. Payment of the principal
and interest on the Securities shall be 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. 
 Section 10.02. Maintenance of Office or Agency. The Company shall maintain in the Borough of Manhattan, The City of New York, an office or
agency where Securities may be presented or surrendered for payment, where Securities may be surrendered for registration of transfer or exchange and where notices and demands to or upon the Company in respect of the Securities and this Indenture
may be served, which shall initially be U.S. Bank National Association, c/o U.S. Bank Trust National Association, 100 Wall Street, Suite 1600, New York, NY 10005. The Company shall give prompt written notice to the Trustee of 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 such presentations, surrenders, notices and demands. 
 The Company may also from time to time designate one or more other offices or agencies (in or outside the Borough of Manhattan, The City of New York)
where the Securities may be presented or surrendered for any or all such purposes and may from time to time rescind such designations; provided, however, that no such designation or rescission shall in any manner relieve the Company of its
obligation to maintain an office or agency in the Borough of Manhattan, The City of New York, for such purposes. The Company shall give prompt written notice to the Trustee of any such designation or rescission and of any change in the location of
any such other office or agency. The Company hereby initially designates the Corporate Trust Office. 
 Section 10.03. Money for
Security Payments to be Held in Trust. If the Company shall at any time act as its own Paying Agent, it shall, on or before each due date of any payment in respect of any of the Securities, segregate and hold in trust for the benefit of the
Persons entitled thereto a sum sufficient to make the payment so becoming due until such sums shall be paid to such Persons or otherwise disposed of as herein provided and shall promptly notify the Trustee of its action or failure so to act.

 Whenever the Company shall have one or more Paying Agents, it will, prior to each due date of any payment in respect of any Securities,
deposit with a Paying Agent a sum sufficient to pay such amount, such sum to be held as provided by the Trust Indenture Act, and (unless such Paying Agent is the Trustee) the Company will promptly notify the Trustee of its action or failure so to
act. 
  

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 The Company shall cause each Paying Agent other than the Trustee to execute and deliver to the Trustee an
instrument in which such Paying Agent shall agree with the Trustee, subject to the provisions of this Section 10.03, that such Paying Agent will (i) comply with the provisions of the Trust Indenture Act applicable to it as a Paying Agent
and (ii) during the continuance of any default by the Company (or any other obligor upon the Securities) in the making of any payment in respect of the Securities, upon the written request of the Trustee, forthwith pay to the Trustee all sums
held in trust by such Paying Agent as such. 
 The Company may at any time, for the purpose of obtaining the satisfaction and discharge of
this Indenture or for any other purpose, pay, or by Company Order direct any Paying Agent to pay, to the Trustee all sums held in trust by the Company or such Paying Agent, 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. 
 Any money deposited with the Trustee or any Paying Agent, or then held by the Company, in trust for the making of payments in respect of any Security and
remaining unclaimed for two years after such payment has become due shall be paid to the Company on Company Request, or (if then held by the Company) shall be discharged from such trust; and the Holder of such Security shall thereafter, as an
unsecured general creditor, look only to the Company for payment thereof, and all liability of the Trustee or such Paying Agent with respect to such trust money, and all liability of the Company as trustee thereof, shall thereupon cease;
provided, however, that the Trustee or such Paying Agent, before being required to make any such repayment, may at the expense of the Company cause to be published once, in a newspaper published in the English language, customarily published
on each Business Day and of general circulation in The City of New York, notice that such money remains unclaimed and that, after a date specified therein, which shall not be less than 30 days from the date of such publication, any unclaimed balance
of such money then remaining shall be repaid to the Company. In the absence of a written request from the Company to return funds remaining unclaimed for two years after such payment has become due to the Company, the Trustee shall from time to time
deliver all unclaimed payments to or as directed by applicable escheat authorities, as determined by the Trustee in its sole discretion, in accordance with the customary practices and procedures of the Trustee. Any such unclaimed funds held by the
Trustee pursuant to this Section 10.03 shall be held uninvested and without any liability for interest. 
 Section 10.04.
Statement by Officers as to Default. The Company will deliver to the Trustee, within 120 days after the end of each fiscal year of the Company ending after the date hereof, an Officers’ Certificate, stating whether or not to the
knowledge of the signers thereof the Company is in Default in the performance and observance of any of the terms, provisions and conditions of this Indenture (without regard to any period of grace or requirement of notice provided hereunder) and, if
the Company shall be in Default, specifying all such Defaults and the nature and status thereof of which they may have knowledge. 
  

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 The Company shall deliver to the Trustee, as soon as possible and in any event within 30 days after the
Company becomes aware of the occurrence of any Event of Default or an event which, with notice or the lapse of time or both, would constitute an Event of Default, an Officers’ Certificate setting forth the details of such Event of Default or
default and the action which the Company is taking or proposes to take with respect thereto. 
 Section 10.05. Existence. Subject
to Article 8, the Company shall do or cause to be done all things necessary to preserve and keep in full force and effect its existence, rights (charter and statutory) and franchises; provided, however, that the Company shall not be required
to preserve any such right or franchise if the Board of Directors of the Company shall determine that the preservation thereof is no longer desirable in the conduct of the business of the Company and that the loss thereof is not disadvantageous in
any material respect to the Holders. 
 Section 10.06. Reports and Delivery of Certain Information. The Company shall timely file
all quarterly and annual reports on Forms 10-Q and 10-K which it is required to file with the Commission pursuant to Section 13 or 15(d) of the Exchange Act (provided that filings made with any extension pursuant to Rule 12b-25 under the
Exchange Act or any successor rule thereto shall be deemed timely), and within 15 days after it is required to file them with the Commission, the Company shall file copies of all such reports with the Trustee. Delivery of such reports to the Trustee
is for informational purposes only and the Trustee’s receipt of such shall not constitute constructive notice of any information contained therein or determinable from information contained therein, including the Company’s compliance with
any of its covenants hereunder (as to which the Trustee is entitled to rely exclusively on Officers’ Certificates). 
 Section 10.07. Book-Entry System. If the Securities cease to trade in the Depositary’s book-entry settlement system, the Company covenants and agrees that it shall use reasonable efforts to make such other book entry
arrangements that it determines are reasonable for the Securities. 
 Section 10.08. Information for IRS Filings. The Company
shall provide to the Trustee on a timely basis such information as the Trustee requires to enable the Trustee to prepare and file any form required to be submitted by the Company with the Internal Revenue Service and the Holders of the Securities.

 ARTICLE 11 
 Redemption And
Repurchase Upon A Fundamental Change 
 Section 11.01. Right to Redeem; Notices to Trustee. Prior to May 10, 2010, the
Securities are not redeemable. At any time commencing on May 10, 2010, the Securities are redeemable as a whole, or from time to time in part, at the option of the Company at the Redemption Price equal to 100% expressed as a percentage of the
Principal Amount of Securities to be redeemed, together with accrued and unpaid interest to, but excluding, the Redemption Date. 
  

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 The Company shall give the notice to the Trustee provided for in this Section 11.01 by a Company
Order, at least 30 days but not more than 60 days before the Redemption Date (unless a shorter notice shall be satisfactory to the Trustee). 
 Section 11.02. Selection of Securities to be Redeemed. If less than all the Securities are to be redeemed, the Trustee shall select the Securities to be redeemed pro rata or by lot or by any other method the Trustee considers
fair and appropriate (so long as such method is not prohibited by the rules of any stock exchange on which the Securities are then listed). The Trustee shall make the selection within seven days from its receipt of the notice from the Company
delivered pursuant to the second paragraph of Section 11.01 from Outstanding Securities not previously called for redemption. 
 Securities and portions of them the Trustee selects shall be in Principal Amounts of $1,000 or integral multiples of $1,000. Provisions of this Indenture that apply to Securities called for redemption in whole also apply to Securities
called for redemption in part. The Trustee shall notify the Company promptly of the Securities or portions of Securities to be redeemed. 
 If any Security selected for partial redemption is converted in part before termination of the conversion right with respect to the portion of the Security so selected, the converted portion of such Security shall be deemed (so far as may
be) to be the portion selected for redemption. Securities which have been converted during a selection of Securities to be redeemed may be treated by the Trustee as outstanding for the purpose of such selection. 
 Section 11.03. Notice of Redemption. At least 30 days but not more than 60 days before a Redemption Date, the Company shall mail a notice of
redemption by first-class mail, postage prepaid, to each Holder of Securities to be redeemed. 
 The notice shall identify the Securities to
be redeemed and shall state: 
 (i) the Redemption Date; 
 (ii) the Redemption Price; 
 (iii) the Conversion Price; 
 (iv) the name and address of the Paying Agent and Conversion
Agent; 
 (v) that Securities called for redemption may be converted at any time before the close of business on the Business
Day immediately preceding the Redemption Date; 
 (vi) that Holders who want to convert Securities must satisfy the
requirements set forth therein and in this Indenture; 
 (vii) that Securities called for redemption must be surrendered to
the Paying Agent for cancellation to collect the Redemption Price; 
  

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 (viii) if fewer than all the outstanding Securities are to be redeemed, the certificate
number (if such Securities are held other than in global form) and Principal Amounts of the particular Securities to be redeemed; 
 (ix) that, unless the Company defaults in making payment of such Redemption Price, interest will cease to accrue on and after the Redemption Date with respect to the Securities to be redeemed; and 
 (x) the CUSIP number of the Securities. 
 At the Company’s written request delivered at least 15 days prior to the date such notice is to be given (unless a shorter time period shall be acceptable to the Trustee), the Trustee shall give the notice of
redemption in the Company’s name and at the Company’s expense. 
 Section 11.04. Effect of Notice of Redemption. Once
notice of redemption is given, Securities called for redemption become due and payable on the Redemption Date and at the Redemption Price stated in the notice except for Securities which are converted in accordance with the terms of this Indenture.
Upon surrender to the Paying Agent, such Securities shall be paid at the Redemption Price stated in the notice. 
 Section 11.05.
Deposit of Redemption Price. Prior to 10:00 a.m. (New York City time) on a Redemption Date, the Company shall deposit with the Paying Agent (or if the Company or a Subsidiary or an Affiliate of either of them is the Paying Agent, shall
segregate and hold in trust) money sufficient to pay the Redemption Price of all Securities to be redeemed on that date other than Securities or portions of Securities called for redemption which on or prior thereto 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 Securities pursuant to Article 13. 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. 
 Section 11.06.
Securities Redeemed in Part. Upon surrender of a Security that is redeemed in part, the Company shall execute and the Trustee shall authenticate and deliver to the Holder a new Security in an authorized denomination equal in principal amount
to the unredeemed portion of the Security surrendered. The Company shall not be required to (i) issue, register the transfer of, or exchange any Securities during a period of 15 days before the Redemption Date or (ii) register the transfer
of, or exchange any, Securities so selected for redemption, in whole or in part, except the unredeemed portion of any Security being redeemed in part. 
 Section 11.07. Conversion Arrangement on Call for Redemption. In connection with any redemption of Securities, the Company may arrange for the purchase and conversion of any Securities called for
redemption by an agreement with one or more investment bankers or other purchasers to purchase such Securities by paying to the Trustee in trust for the Securityholders, on or prior to 10:00 a.m. New York City time on the Redemption Date, an amount
that, together with any amounts deposited with the Trustee by the Company for the 

  

 42 

 
redemption of such Securities, is not less than the Redemption Price of such Securities. Notwithstanding anything to the contrary contained in this Article
11, the obligation of the Company to pay the Redemption Price of such Securities shall be deemed to be satisfied and discharged to the extent such amount is so paid by such purchasers. If such an agreement is entered into, any Securities not duly
surrendered for conversion by the Holders thereof may, at the option of the Company, be deemed, to the fullest extent permitted by law, acquired by such purchasers from such Holders and (notwithstanding anything to the contrary contained in Article
13) surrendered by such purchasers for conversion, all as of immediately prior to the close of business on the Business Day prior to the Redemption Date, subject to payment of the above amount as aforesaid. The Trustee shall hold and pay to the
Holders whose Securities are selected for redemption any such amount paid to it for purchase and conversion in the same manner as it would moneys deposited with it by the Company for the redemption of Securities. Without the Trustee’s prior
written consent, no arrangement between the Company and such purchasers for the purchase and conversion of any Securities shall increase or otherwise affect any of the powers, duties, responsibilities or obligations of the Trustee as set forth in
this Indenture, and the Company agrees to indemnify the Trustee from, and hold it harmless against, any loss, liability or expense arising out of or in connection with any such arrangement for the purchase and conversion of any Securities between
the Company and such purchasers, including the costs and expenses incurred by the Trustee in the defense of any claim or liability arising out of or in connection with the exercise or performance of any of its powers, duties, responsibilities or
obligations under this Indenture, except in the case of the Trustee’s negligence or willful misconduct. 
 Section 11.08.
Repurchase of Securities at Option of the Holder Upon Fundamental Change. 
 (a) General. If prior to the Stated
Maturity there shall have occurred a Fundamental Change, Securities shall be repurchased by the Company at the Fundamental Change Repurchase Price on a date specified by the Company that is not less than 25 days nor more than 35 days after the date
of the mailing of a Fundamental Change Company Notice pursuant to clause (c) of this Section 11.08 (the “Fundamental Change Repurchase Date”), at the option of the Holder thereof, in accordance with the following
procedures; provided that the Company shall not be required to repurchase the Securities pursuant to this Section 11.08 if the Closing Price per share of Common Stock for any five Trading Days within the period of ten consecutive Trading Days
ending immediately after the later of the Fundamental Change and the public announcement of the Fundamental Change equals or exceeds 110% of the Conversion Price of the Securities in effect on each of those five Trading Days. 
 (b) Conversion Rate Adjustment on a Fundamental Change. If and only to the extent a Holder timely elects to convert Securities in
connection with a Fundamental Change transaction that occurs on or prior to April 15, 2011, pursuant to which 10% or more of the consideration for shares of Common Stock (excluding cash payments for fractional shares) in such Fundamental Change
transaction consists of cash or securities (or other property) that are not traded or scheduled to be traded immediately following such transaction on a United States national securities exchange, then the Company shall increase the Conversion Rate
for the Securities surrendered for conversion as described 

  

 43 

 
below; provided that if the Share Price paid in connection with such transaction is greater than $27.50 or less than $7.50 (subject in each case to
adjustment, as described below), no adjustment to the applicable Conversion Rate shall be made. 
 The increase in the Conversion Rate for
the Securities surrendered for conversion as described in the immediately preceding paragraph shall be determined by reference to the table attached as Schedule I hereto, based on the effective date of such Fundamental Change transaction and the
Share Price paid in connection with such Fundamental Change transaction; provided, that if the Share Price is between two Share Price amounts in the table, or the effective date of such Fundamental Change transaction is between two effective dates
in the table, the amount of the Conversion Rate adjustment shall be determined by a straight-line interpolation between the adjustment amounts set for the two Share Prices and the two dates, as applicable, based on a 365-day year. The
“effective date” with respect to a Fundamental Change transaction means the date that a Fundamental Change becomes effective. 
 The Share Prices set forth in the first row of the table in Schedule I hereto shall be adjusted as of any date on which the Conversion Rate of the Securities is adjusted pursuant to Section 13.06. The adjusted Share Prices shall equal
the Share Prices applicable immediately prior to such adjustment, multiplied by a fraction, the numerator of which is the Conversion Rate immediately prior to the adjustment giving rise to the Share Price adjustment and the denominator of which is
the Conversion Rate as so adjusted. The Conversion Rate adjustment amounts shall be adjusted in the same manner as the Conversion Rate as set forth in Section 13.06. 
 Notwithstanding the foregoing, in no event will the Conversion Rate exceed 113.0741 per $1,000 principal amount of Securities, subject to adjustments in the same manner as the Conversion Rate as set forth in
Section 13.06. In no event shall a Holder be entitled to both a Conversion Rate adjustment pursuant to this Section 11.08(b) and Additional Interest on Securities converted in connection with a Fundamental Change. 
 (c) Company Notice of Fundamental Change. Within 15 days after the Company knows or reasonably should know of the occurrence of a
Fundamental Change, the Company shall, if Holders have the right to require the Company to repurchase Securities hereunder, deliver a written notice of Fundamental Change (the “Fundamental Change Company Notice”) by first-class mail
or by overnight courier to the Trustee and to each Holder (and to beneficial owners as required by applicable law). The notice shall include a form of Fundamental Change Repurchase Notice to be completed by the Securityholder and shall state:

 (i) the events causing a Fundamental Change and the date of such Fundamental Change; 
 (ii) the date by which a Holder must deliver a Fundamental Change Repurchase Notice to elect the repurchase option pursuant to this
Section 11.08; 
 (iii) the Fundamental Change Repurchase Date; 
 (iv) the Fundamental Change Repurchase Price; 
  

 44 

 (v) whether the Fundamental Change Repurchase Price will be paid in cash, shares of
Common Stock or a combination thereof, specifying the percentages of each; 
 (vi) if shares of Common Stock will be used to
pay all or part of the Fundamental Change Repurchase Price, state: 
 a) the method for valuing the shares of Common Stock to
be delivered in connection with the repurchase; and 
 b) that Holders of the Securities will bear the market risk with
respect to the value of the shares of Common Stock to be delivered from the date the number of shares is determined; 
 (vii)
the name and address of the Paying Agent and the Conversion Agent; 
 (viii) the Conversion Rate applicable on the date of the
Fundamental Change Company Notice; 
 (ix) that Securities as to which a Fundamental Change Repurchase Notice has been given
may be converted pursuant to Article 13 hereof only if the Fundamental Change Repurchase Notice has been withdrawn in accordance with the terms of this Indenture; 
 (x) that Securities must be surrendered to the Paying Agent for cancellation to collect payment; 
 (xi) that the Fundamental Change Repurchase Price for any Security as to which a Fundamental Change Repurchase Notice has been duly given
and not withdrawn will be paid promptly following the later of the Fundamental Change Repurchase Date and the time of surrender of such Security as described in clause (x) above; 
 (xii) the procedures the Holder must follow to exercise rights under this Section 11.08; 
 (xiii) the conversion rights of the Securities; 
 (xiv) the procedures for withdrawing a Fundamental Change Repurchase Notice; 
 (xv) that, unless the Company defaults in making payment of such Fundamental Change Repurchase Price, Securities covered by any
Fundamental Change Repurchase Notice will cease to be outstanding and interest will cease to accrue on and after the Fundamental Change Repurchase Date; and 
 (xvi) the CUSIP number of the Securities. 
  

 45 

 At the Company’s request, the Trustee shall give such Fundamental Change Company Notice in the
Company’s name and at the Company’s expense; provided that, in all cases, the text of such Fundamental Change Company Notice shall be prepared by the Company. In connection with delivery of the Fundamental Change Company Notice to the
Holders, the Company shall publish a notice containing substantially the same information that is required in the Fundamental Change Company Notice in a newspaper published in the English language, customarily published each Business Day and 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 such time. 
 (d) Fundamental Change Repurchase Notice. In order to exercise its rights under Section 11.08 hereof, a Holder must deliver to
the Paying Agent: 
 (1) a written notice of repurchase (a “Fundamental Change Repurchase Notice”),
substantially in the form of Exhibit D hereto, at any time from the opening of business on the date of the Fundamental Change Company Notice until the close of business on Business Day prior to the Fundamental Change Repurchase Date
stating: 
 (A) the certificate number (if such Security is held other than in global form) of the Security which the Holder
will deliver to be purchased; 
 (B) the portion of the Principal Amount of the Security which the Holder will deliver to be
purchased, which portion must be in a Principal Amount of $1,000 or integral multiples thereof; and 
 (C) that such Security
shall be purchased as of the Fundamental Change Repurchase Date pursuant to the terms and conditions specified in the Securities and in this Indenture; and 
 (2) the Security (if such Security is held other than in global form) for cancellation prior to, on or after the Fundamental Change Repurchase Date (together with all necessary endorsements) at the offices of the
Paying Agent, such delivery being a condition to receipt by the Holder of the Fundamental Change Repurchase Price therefor; provided that such Fundamental Change Repurchase Price shall be so paid pursuant to this Section 11.08 only if the
Security so delivered to the Paying Agent shall conform in all respects to the description thereof in the related Fundamental Change Repurchase Notice. 
 The Company shall purchase from the Holder thereof, pursuant to this Section 11.08, a portion of a Security if the Principal Amount of such portion is $1,000 or an integral multiple of $1,000 if so requested by
the Holder. Provisions of this Indenture that apply to the repurchase of all of a Security also apply to the repurchase of such portion of such Security. 
 Any repurchase by the Company contemplated pursuant to the provisions of this Section 11.08 shall be consummated by the delivery to the Paying Agent of the consideration to be received by the Holder promptly
following the later of the Fundamental Change Repurchase Date and the time of delivery of the Security. 
  

 46 

 Notwithstanding anything herein to the contrary, any Holder delivering to the Paying Agent the
Fundamental Change Repurchase Notice contemplated by this Section 11.08(d) shall have the right to withdraw such Fundamental Change Repurchase Notice at any time prior to the close of business on the Business Day prior to the Fundamental Change
Repurchase Date by delivery of a written notice of withdrawal to the Paying Agent in accordance with Section 11.09. 
 The Paying Agent
shall promptly notify the Company of the receipt by it of any Fundamental Change Repurchase Notice or written notice of withdrawal thereof. 
 (e) Payment of Fundamental Change Repurchase Price. The Securities to be repurchased pursuant to this Section 11.08 shall be paid for in cash; provided that if a Fundamental Change occurs as a result of a
Change of Control Event, the Securities to be repurchased may be paid for, in whole or in part, at the election of the Company, in cash or Common Stock or any combination of cash and Common Stock, subject to the conditions set forth in clause
(f) of this Section 11.08. 
 (f) Conditions for Election to Pay Fundamental Change Repurchase Price in Common
Stock. The Company may elect to pay all or a portion of the Fundamental Change Repurchase Price in Common Stock, or, in the case of a merger in which the Company is not the surviving corporation, Common Stock or American Depositary Shares of the
surviving corporation or its direct or indirect parent corporation or a combination of the applicable securities and cash, at the option of the Company. If the Company elects to pay all or any portion of the Fundamental Change Repurchase Price in
Common Stock, the number of shares of Common Stock to be paid will equal the quotient obtained by dividing (i) the portion of the Fundamental Change Repurchase Price to be paid in shares of Common Stock by (ii) 97% of the average Closing
Price of the shares of Common Stock for the five Trading Day period ending on the second Business Day immediately preceding the Fundamental Change Repurchase Date, appropriately adjusted to take into account the occurrence, during the period
commencing on the first of the Trading Days during the five Trading Day period and ending on the Fundamental Change Repurchase Date, of any event described in Section 13.06, subject to the next succeeding paragraph. The Company shall designate,
in the Fundamental Change Company Notice delivered pursuant to clause (c) of Section 11.08, whether it will repurchase the Securities for cash or shares of Common Stock, or, if a combination thereof, the percentages of the Fundamental
Change Repurchase Price of Securities in respect of which it will pay in cash or shares of Common Stock; provided that the Company will pay cash for fractional interests in shares of Common Stock. For purposes of determining the existence of
potential fractional interests, all Securities subject to repurchase by the Company held by a Holder shall be considered together (no matter how many separate certificates are to be presented). Each Holder whose Securities are repurchased pursuant
to this Section 11.08 shall receive the same percentage of cash or shares of Common Stock in payment of the Fundamental Change Repurchase Price for such Securities, except with regard to the payment of cash in lieu of fractional shares of

  

 47 

 
Common Stock. The Company may not change its election with respect to the consideration (or components or percentages of components thereof) to be paid once
the Company has given its Fundamental Change Company Notice to Holders except as set forth in the next succeeding paragraph in the event of a failure to satisfy, prior to the close of business on the Business Day prior to the Fundamental Change
Repurchase Date, any condition to the payment of the Fundamental Change Repurchase Price, in whole or in part, in shares of Common Stock. 
 The Company shall, at least three Business Days prior to delivering the Fundamental Change Company Notice, deliver an Officers’ Certificate to the Trustee specifying: 
 (i) the manner of payment selected by the Company, 
 (ii) the information required by the Fundamental Change Company Notice pursuant to clause (c) of Section 11.08, 
 (iii) if the Company elects to pay the Fundamental Change Repurchase Price, or a specified percentage thereof, in shares of Common Stock,
that the conditions to such manner of payment set forth in this clause (f) have been or will be complied with, and 
 (iv) whether the Company desires the Trustee to give the Fundamental Change Company Notice required by clause (c) of Section 11.08. 
 The
Company’s right to exercise its election to repurchase Securities through the issuance of shares of Common Stock shall be conditioned upon: 
 (i) the Company’s giving a timely Fundamental Change Company Notice containing an election to purchase all or a specified percentage of the Securities with shares of Common Stock as provided herein; 

(ii) the registration of such shares of Common Stock under the Securities Act and, if required, the Exchange Act; 
 (iii) the listing of such shares of Common Stock on a United States national securities exchange or the quotation of such shares of Common
Stock in an inter-dealer quotation system of any registered United States national securities association, in each case, if the Common Stock is then listed on a national securities exchange or quoted in an inter-dealer quotation system; 

(iv) any necessary qualification or registration of such shares of Common Stock under applicable state securities laws or the
availability of an exemption from such qualification and registration; and 
 (v) the receipt by the Trustee of an
(A) Officers’ Certificate stating that the terms of the issuance of the shares of Common Stock are in conformity with this Indenture, (B) an Opinion of Counsel to the effect that the shares of Common Stock to be issued by the Company
in payment of the Fundamental Change 

  

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Repurchase Price in respect of the Securities have been duly authorized and, when issued and delivered pursuant to the terms of this Indenture in payment of
the Fundamental Change Repurchase Price in respect of the Securities, will be validly issued, fully paid and non-assessable and (C) an Officer’s Certificate, stating that the conditions to the issuance of the shares of Common Stock have
been satisfied. 
 Such Officers’ Certificate shall also set forth the number of shares of Common Stock to be issued for each $1,000
principal amount of Securities upon their Stated Maturity and the Closing Price of a share of Common Stock on each Trading Day during the period commencing on the fifth Trading Day immediately preceding but ending on the third Business Day prior to
the applicable Fundamental Change Repurchase Date. If the foregoing conditions are not satisfied prior to the close of business on the Business Day immediately preceding the Fundamental Change Repurchase Date and the Company has elected to
repurchase the Securities through the issuance of shares of Common Stock, the Company shall pay the entire Fundamental Change Repurchase Price of the Securities in cash. 
 Promptly after determination of the actual number of shares of Common Stock to be issued upon repurchase of Securities, the Company shall be required to disseminate a press release through Dow Jones &
Company, Inc. or Bloomberg Business News containing this information or publish the information on the Company’s web site or through such other public medium as the Company may use at that time. 
 All shares of Common Stock delivered upon repurchase of the Securities shall be duly authorized, validly issued, fully paid and nonassessable.

 If a Holder of a repurchased Security is paid in shares of Common Stock, the Company shall pay any documentary, stamp or similar issue or
transfer tax due on such issue of Common Stock. However, the Holder shall pay any such tax which is due because the Holder requests the Common Stock to be issued in a name other than the Holder’s name. The Trustee (or other paying agent
appointed by the Company) may refuse to deliver the certificates representing the shares of Common Stock being issued in a name other than the Holder’s name until the Trustee (or other paying agent appointed by the Company) receives a sum
sufficient to pay any tax which will be due because the shares of Common Stock are to be issued in a name other than the Holder’s name. Nothing herein shall preclude any income tax withholding required by law or regulations. 
 (g) Procedure Upon Repurchase. The Company shall deposit cash or Common Stock, if permitted hereunder, at the time and in the
manner as provided in Section 11.10, sufficient to pay the aggregate Fundamental Change Repurchase Price of all Securities to be purchased pursuant to this Section 11.08. 
 Section 11.09. Effect of Fundamental Change Repurchase Notice. Upon receipt by the Paying Agent of the Fundamental Change Repurchase Notice
specified in clause (d) of Section 11.08, the Holder of the Security in respect of which such Fundamental Change Repurchase Notice was given shall (unless such Fundamental Change Repurchase Notice is withdrawn as specified in the following
two paragraphs) thereafter be entitled to receive solely 

  

 49 

 
the Fundamental Change Repurchase Price with respect to such Security. Such Fundamental Change Repurchase Price shall be paid to such Holder, subject to
receipt of funds by the Paying Agent, promptly following the later of (x) the Fundamental Change Repurchase Date with respect to such Security (provided the conditions in clause (d) of Section 11.08, have been satisfied) and
(y) the time of delivery of such Security to the Paying Agent by the Holder thereof in the manner required by clause (d) of Section 11.08. Securities in respect of which a Fundamental Change Repurchase Notice has been given by the
Holder thereof may not be converted pursuant to Article 13 on or after the date of the delivery of such Fundamental Change Repurchase Notice unless such Fundamental Change Repurchase Notice has first been validly withdrawn as specified in the
following two paragraphs. 
 A Fundamental Change Repurchase Notice may be withdrawn only by means of a written notice of withdrawal
delivered to the office of the Paying Agent in accordance with the procedures set forth in the Fundamental Change Company Notice at any time prior to the close of business on the Business Day prior to the Fundamental Change Repurchase Date
specifying: 
 (i) the Principal Amount of the Security with respect to which such notice of withdrawal is being submitted;
and 
 (ii) the certificate number (if such Security is held in other than global form) of the Security in respect of which
such notice of withdrawal is being submitted; and 
 (iii) the Principal Amount, if any, of such Security which remains
subject to the original Fundamental Change Repurchase Notice and which has been or will be delivered for purchase or repurchase by the Company. 
 There shall be no repurchase of any Securities pursuant to Section 11.08 if there has occurred (prior to, on or after, as the case may be, the giving, by the Holders of such Securities, of the required Fundamental Change Repurchase
Notice) and is continuing an Event of Default (other than a default in the payment of the Fundamental Change Repurchase Price with respect to such Securities). The Paying Agent will promptly return to the respective Holders thereof any Securities
(x) with respect to which a Fundamental Change Repurchase Notice has been withdrawn in compliance with this Indenture, or (y) held by it during the continuance of an Event of Default (other than a default in the payment of the Fundamental
Change Repurchase Price with respect to such Securities) in which case, upon such return, the Fundamental Change Repurchase Notice with respect thereto shall be deemed to have been withdrawn. 
 Section 11.10. Deposit of Fundamental Change Repurchase Price. Prior to 10:00 a.m. (local time in The City of New York) on the Business Day
preceding the Fundamental Change Repurchase Date, 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 herein) an amount of money (in immediately available funds if deposited on such Business Day) or Common Stock, if permitted hereunder, sufficient to pay the Fundamental Change Repurchase Price of all the Securities or portions
thereof which are to be repurchased as of the Fundamental Change Repurchase Date. The Company shall promptly notify the Trustee in writing of the amount of any deposits of cash or Common Stock made pursuant to Section 11.10. 
  

 50 

 Section 11.11. Securities Repurchased in Whole or in Part. Any Security which is to be
repurchased, whether in whole or 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 Security, without service charge, a new
Security or Securities, 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 Security so surrendered which is not repurchased. 

Section 11.12. Covenant to Comply With Securities Laws Upon Repurchase of Securities. In connection with any offer to repurchase
Securities under Section 11.08 (provided that such offer or repurchase 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 or repurchase), the Company shall (i) comply with Rule 13e-4 and Rule 14e-1 under the Exchange Act, (ii) file the related Schedule TO (or any successor schedule, form or report) under the Exchange Act, and
(iii) otherwise comply with all Federal and state securities laws so as to permit the rights and obligations under Section 11.08 to be exercised in the time and in the manner specified in Section 11.08, as applicable. 
 Section 11.13. Repayment to the Company. The Trustee and the Paying Agent shall return to the Company any cash that remains unclaimed,
together with interest or dividends, if any, thereon, held by them for the payment of the Fundamental Change Repurchase Price; provided that to the extent that the aggregate amount of cash or Common Stock deposited by the Company pursuant to
Section 11.10 exceeds the aggregate Fundamental Change Repurchase Price of the Securities or portions thereof which the Company is obligated to repurchase as of the Fundamental Change Repurchase Date, then as soon as practicable following the
Fundamental Change Repurchase Date, the Trustee or the Paying Agent, as the case may be, shall return any such excess to the Company. 
 ARTICLE 12 
 Interest Payments on the Securities 
 Section 12.01. Interest Rate. (a) Interest on the Securities shall accrue at a rate of 3.50% per annum and shall be payable semi-annually in arrears on each Interest Payment Date to Holders of
record on the Record Date immediately preceding such Interest Payment Date. Interest will be computed on the basis of a 360-day year comprised of twelve 30-day months. Interest on the Securities shall accrue from the most recent date to which
interest has been paid, or if no interest has been paid, from                     , 2007, until the Principal Amount is paid or duly made
available for payment. 
 (b) Interest on any 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 that Security is registered at the close of business on the Record Date for such interest at 

  

 51 

 
the office or agency of the Company maintained for such purpose. Each installment of interest on any Security shall be made by check mailed to the address of
the Holder specified in the register of Securities; provided, however, that, with respect to any Holder of Securities with an aggregate principal amount in excess of $2,000,000, at the request of such Holder in writing to the Company,
interest on such Holder’s Securities shall be paid by wire transfer in immediately available funds in accordance with the written wire transfer instruction supplied by such Holder from time to time to the Trustee and Paying Agent (if different
from the Trustee) at least ten days prior to the applicable Interest Payment Date. In the case of a permanent Global Security, interest payable on any Interest Payment Date will be paid to the Depositary, with respect to that portion of such
permanent Global Security held for its account by Cede & Co. for the purpose of permitting such party to credit the interest received by it in respect of such permanent Global Security to the accounts of the beneficial owners thereof.

 ARTICLE 13 
 Conversion

 Section 13.01. Conversion Privilege. (a) Subject to the further provisions of this Article 13, a Holder of a
Security may convert the Principal Amount of such Security (or a portion thereof equal to $1,000 or any integral multiple of $1,000 in excess thereof) into Common Stock at any time prior to the close of business on the Business Day prior to the
Stated Maturity. 
 (b) Conversion Period. Notwithstanding the foregoing, if such Security is submitted or presented
for repurchase pursuant to Article 11, such conversion right shall terminate at the close of business on the Business Day prior to the Fundamental Change Repurchase Date for such Security or such earlier date as the Holder presents such Security for
repurchase (unless the Company shall default when due, in which case the conversion right shall terminate at the close of business on the date such default is cured and such Security is repurchased). 
 (c) Conversion Rate; Conversion Price. The conversion rate per Security (the “Conversion Rate”) shall be that set
forth in paragraph 5 in the Securities, subject to adjustment as herein set forth. The initial Conversion Rate is 74.0741 shares of Common Stock per $1,000 principal amount of Securities. The “Conversion Price” at any particular
time is determined by dividing $1,000 by the then-applicable Conversion Rate. 
 (d) Securities Converted in Whole or in
Part. Provisions of this Indenture that apply to conversion of all of a Security also apply to conversion of a portion of a Security. 
 (e) Rights of Holders. A Holder of Securities is not entitled to any rights of a holder of Common Stock until such Holder has converted its Securities to Common Stock, and only to the extent such Securities are
deemed to have been converted into Common Stock pursuant to this Article 13. 
  

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 Section 13.02. Conversion Procedure. 
 (a) To convert a Security, a Holder must (i) complete and manually sign the conversion notice on the back of the Security or
facsimile of the conversion notice and deliver such notice to a Conversion Agent, (ii) surrender the Security to a Conversion Agent, (iii) furnish appropriate endorsements and transfer documents if required by a Registrar or a Conversion
Agent and (iv) pay any transfer or similar tax, if required. Such notice is hereinafter referred to as a “Notice of Conversion.” A Security shall be deemed to have been converted as of the close of business on the date (the
“Conversion Date”) on which the Holder has complied with the immediately preceding sentence of this clause (a) of Section 13.02. Anything herein to the contrary notwithstanding, in the case of Global Securities, a Notice
of Conversion shall be delivered and such Securities shall be surrendered for conversion in accordance with the rules and procedures of DTC as in effect from time to time. 
 (b) The Company will, as soon as practicable after the Conversion Date, issue, or cause to be issued, and deliver to the Conversion Agent
or to such Holder, or such Holder’s nominee or nominees, certificates for the number of full shares of Common Stock, if any, to which such Holder shall be entitled. The Person or Persons entitled to receive such Common Stock upon such
conversion shall be treated for all purposes as the record holder or holders of such Common Stock, as of the close of business on the applicable Conversion Date; provided, however, that no surrender of a Security on any date when the stock
transfer books of the Company shall be closed shall be effective to constitute the Person or Persons entitled to receive the shares of Common Stock upon such conversion as the record holder or holders of such shares of Common Stock on such date, but
such surrender shall be effective to constitute the Person or Persons entitled to receive such shares of Common Stock as the record holder or holders thereof for all purposes at the close of business on the next succeeding day on which such stock
transfer books are open; provided further that such conversion shall be at the Conversion Rate in effect on the Conversion Date as if the stock transfer books of the Company had not been closed. Upon conversion of a Security, such Person
shall no longer be a Holder of such Security. Except as otherwise provided in Section 13.06, no payment or adjustment will be made for dividends or distributions on shares of Common Stock issued upon conversion of a Security. 
 All Securities or portions thereof surrendered for conversion during the period from the close of business on the Record Date for any Interest Payment
Date to the close of business on the Business Day next preceding the following Interest Payment Date shall (unless such Securities or portion thereof being converted shall have been called for redemption on a Redemption Date which occurs during the
period from the close of business on such Record Date to the close of business on the Business Day next preceding the following Interest Payment Date) be accompanied by payment, in funds acceptable to the Company, of an amount equal to the interest
otherwise payable on such Interest Payment Date on the Principal Amount being converted; provided, however, that no such payment need be made if there shall exist at the time of conversion a default in the payment of interest on the
Securities. 
 (c) If a Holder converts more than one Security at the same time, the number of shares of Common Stock issuable
upon the conversion shall be based on the aggregate Principal Amount of Securities converted. 
  

 53 

 (d) Upon surrender of a Security that is converted in part, the Company shall execute,
and the Trustee shall authenticate and deliver to the Holder, a new Security equal in principal amount to the unconverted portion of the Security surrendered. 
 (e) If the last day on which Security may be converted is not a Business Day in a place where a Conversion Agent is located, the
Securities may be surrendered to that Conversion Agent on the next succeeding Business Day. 
 (f) Holders that have already
delivered a Fundamental Change Repurchase Notice with respect to a Security may not surrender such Security for conversion until the Fundamental Change Repurchase Notice has been withdrawn in accordance with the procedures set forth in
Section 11.09. 
 Section 13.03. Fractional Shares. The Company will not issue fractional shares of Common Stock upon
conversion of Securities. In lieu thereof, the Company will pay an amount in cash for the current market value of the fractional shares. The current market value of a fractional share shall be determined, (calculated to the nearest 1/1000th of a
share) by multiplying the Closing Price of the Common Stock on the Trading Day immediately prior to the Conversion Date by such fractional share and rounding the product to the nearest whole cent. 
 Section 13.04. Taxes on Conversion. If a Holder converts a Security, the Company shall pay any documentary, stamp or similar issue or
transfer tax due on the issuance of shares of Common Stock upon such conversion. However, the Holder shall pay any such tax which is due because the Holder requests the shares to be issued in a name other than the Holder’s name. The Conversion
Agent may refuse to deliver the certificate 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 shares are to be
issued in a name other than the Holder’s name. Nothing herein shall preclude any tax withholding required by law or regulation. 
 Section 13.05. Company to Provide Stock. 
 (a) The Company shall, prior to issuance of any Securities
hereunder, and from time to time as may be necessary, reserve, out of its authorized but unissued Common Stock, a sufficient number of shares of Common Stock to permit the conversion of all outstanding Securities into shares of Common Stock
(including after taking into account any adjustments to the Conversion Rate pursuant to Section 13.06). 
 (b) All shares
of Common Stock delivered upon conversion of the Securities shall be newly issued shares, shall be duly authorized, validly issued, fully paid and nonassessable and shall be free from preemptive rights and free of any lien or adverse claim.

 (c) The Company will endeavor promptly to comply with all federal and state securities laws regulating the offer and
delivery of shares of Common Stock upon conversion of Securities, if any, and will list or cause to have quoted such shares of Common Stock on each national securities exchange or on the New York Stock Exchange or NASDAQ or any over-the-counter
market or such other market on which 

  

 54 

 
the Common Stock is then listed or quoted; provided, however, that if rules of such automated quotation system or exchange permit the Company to defer
the listing of such Common Stock until the first conversion of the Securities into Common Stock in accordance with the provisions of this Indenture, the Company covenants to list such Common Stock issuable upon conversion of the Securities in
accordance with the requirements of such automated quotation system or exchange at such time. 
 Section 13.06. Adjustment of
Conversion Rate. The Conversion Rate 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 Conversion Rate in effect immediately prior thereto shall be adjusted so that the Holder of any Security thereafter surrendered for conversion shall be entitled to
receive that number of shares of Common Stock which it would have owned had such Security been converted immediately prior to the happening of such event. An adjustment made pursuant to this subsection (a) shall become effective immediately
after the record 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. 
 (b) In case the Company shall issue rights or warrants (other than pursuant to a stockholder rights plan) to all or substantially all
holders of its Common Stock entitling them (for a period commencing no earlier than the record date described below and expiring not more than 60 days after such record date) 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 Closing Price per share of Common Stock on the Business Day immediately prior to the date of announcement of such issuance, the Conversion
Rate in effect shall be adjusted so that the same shall equal the rate determined by multiplying the Conversion Rate in effect immediately prior to such announcement by a fraction of which the numerator shall be the number of shares of Common Stock
outstanding at the close of business on the date of announcement plus the number of additional shares of Common Stock offered (or into which the convertible securities so offered are convertible), and the denominator of which shall be the number of
shares of Common Stock outstanding at the close of business on the date of announcement 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 Business Day immediately preceding the date of announcement of such issuance. Such adjustment shall be made successively whenever any such rights or
warrants are issued, and shall become effective on the day following the date of announcement of such issuance. If at the end of the period during which such rights or warrants are exercisable not all rights or warrants shall have been exercised,
the 

  

 55 

 
adjusted Conversion Rate 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 (including securities of any person
other than the Company but excluding (1) dividends or distributions paid exclusively in cash or (2) dividends or distributions referred to in subsection (a) of this Section 13.06), or shall distribute to all or substantially all
holders of its Common Stock rights or warrants to subscribe for or purchase any of its securities (excluding those rights and warrants referred to in subsection (b) of this Section 13.06 and also excluding the distribution of rights to all
holders of Common Stock pursuant to a Rights Plan (as defined below) or the detachment of such rights to the extent set forth in the second following paragraph), then in each such case the Conversion Rate shall be adjusted so that the same shall
equal the rate determined by multiplying the current Conversion Rate by a fraction of which the numerator shall be the Current Market Price per share of the Common Stock on the record date mentioned below and the denominator shall be the Current
Market Price per share of the Common Stock on such record date less the fair market value on such record date (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) of the portion of the capital stock, evidences of indebtedness or other non-cash assets so distributed or of such rights or warrants applicable to one share of Common Stock
(determined on the basis of the number of shares of Common Stock outstanding on the record 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 so distributed or of such rights or warrants applicable to one share of Common Stock is equal to or greater than the Current Market Price per share of the Common Stock
on such record date, in lieu of the foregoing adjustment, adequate provision shall be made so that each Holder of a Security 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 Security on such record date. In the event that such dividend or distribution is not so paid or made, the Conversion Rate shall again
be adjusted to be the Conversion Rate 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 13.06 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 the Common Stock. 
 In the event that the Company has in effect a preferred shares rights plan (“Rights Plan”), upon conversion of the Securities into
Common Stock, to the extent that the Rights 

  

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Plan is still in effect upon such conversion, the Holders of Securities will receive, in addition to the Common Stock, the rights described therein (whether
or not the rights have separated from the Common Stock at the time of conversion), subject to the limitations set forth in the Rights Plan. If the Rights Plan provides that upon separation of rights under such plan from the Company’s Common
Stock that the Holders would not be entitled to receive any such rights in respect of the Common Stock issuable upon conversion of the Securities, the Conversion Rate will be adjusted as provided in this Section 13.06(c) (with such separation
deemed to be the distribution of such rights), subject to readjustment in the event of the expiration, termination or redemption of the rights. Any distribution of rights or warrants pursuant to a Rights Plan that would allow a Holder to receive
upon conversion, in addition to the Common Stock, the rights described therein (whether or not the rights have separated from the Common Stock at the time of conversion), shall not constitute a distribution of rights or warrants pursuant to this
Article 13. 
 Rights or warrants distributed by the Company to all holders of Common Stock entitling the holders thereof to subscribe for or
purchase shares of the Company’s Capital Stock (either initially or under certain circumstances), which rights or warrants, until the occurrence of a specified event or events (“Trigger Event”): (i) are deemed to be
transferred with such shares of Common Stock; (ii) are not exercisable; and (iii) are also issued in respect of future issuances of Common Stock, shall be deemed not to have been distributed for purposes of this Section 13.06 (and no
adjustment to the Conversion Rate under this Section 13.06 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 Conversion Rate shall be made under this clause (c) of Section 13.06. If any such right or warrant, including any such existing rights or warrants distributed prior to the date of this Indenture, are subject to events,
upon the occurrence of which such rights or warrants become exercisable to purchase different securities, evidences of indebtedness or other assets, then the date of the occurrence of any and each such event shall be deemed to be the date of
distribution and record date with respect to new rights or warrants with such rights (and a termination or expiration of the existing rights or warrants without exercise by any of the holders thereof). 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 Conversion Rate under this Section 13.06 was made, (1) in the case of any such rights or warrants which shall all have been redeemed or repurchased without exercise by any holders thereof, the Conversion Rate 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 which
shall have expired or been terminated without exercise by any holders thereof, the Conversion Rate shall be readjusted as if such rights and warrants had not been issued. 
 (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, 

  

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the Conversion Rate shall be increased so that the same shall equal the rate determined by multiplying such Conversion Rate in effect on the Business Day
immediately prior to the record date (the “Determination Date”) for such Triggering Distribution is declared by the Company by a fraction of which the numerator shall be the Current Market Price per share of the Common Stock on the
Determination Date, and the denominator shall be the Current Market Price per share of the Common Stock on the Determination Date less the aggregate amount of cash so distributed applicable to one share of Common Stock (determined on the basis of
the number of shares of Common Stock outstanding on the date such distribution is made), such increase to become effective immediately prior to the opening of business on the day following the date on which the Triggering Distribution is paid. It is
expressly understood that a stock buyback, repurchase or similar transaction or program shall in no event be considered a Triggering Distribution for purposes of this clause (d) or (e) of Section 13.06. 
 (e) In case the Company or any of its Subsidiaries shall purchase any shares of the Company’s Common Stock by means of a tender
offer, then, effective immediately prior to the opening of business on the day after 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 sometimes called the “Expiration Time”), the Conversion Rate shall be increased so that the same shall equal the rate determined by multiplying the Conversion
Rate in effect immediately prior to the close of business on the Expiration Date by a fraction of which the numerator shall be the sum of (x) the aggregate consideration (determined as set forth below) payable to stockholders of the Company
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 (the shares deemed so accepted, up to any such maximum, being referred to as the
“Purchased Shares”) and (y) the product of the number of shares of Common Stock outstanding (less any Purchased Shares and excluding any shares held in the treasury of the Company) immediately prior to the Expiration Time and
the Current Market Price per share of Common Stock (as determined in accordance with clause (f) of Section 13.06), and the denominator shall be the product of the number of shares of Common Stock outstanding (including Purchased Shares but
excluding any shares held in the treasury of the Company) immediately prior to the Expiration Time multiplied by the Current Market Price per share of the Common Stock (as determined in accordance with clause (f) of Section 13.06). For
purposes of this clause (e) of Section 13.06, the aggregate consideration in any such tender offer shall equal 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) of any other consideration payable in such tender offer. 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 Conversion Rate shall again be
adjusted to be the Conversion Rate which would have been in effect based upon the number of shares actually purchased. If the application of this clause (e) of Section 13.06 to any tender offer would result in a decrease in the Conversion
Rate, no adjustment shall be made for such tender offer 

  

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under this Section 13.06(e). For purposes of this clause (e) of Section 13.06, 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 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) For the purpose of any computation under clauses (b), (c) and (d) of Section 13.06, the current market price (the
“Current Market Price”) per share of Common Stock on any date shall be deemed to be the average of the daily Closing Prices for the ten consecutive Trading Days commencing 11 Trading Days before the record date with respect to
distributions, issuances or other events requiring such computation under Section 13.06. For purposes of any computation under subsection (e) of this Section 13.06, the Current Market Price per share of Common Stock shall be deemed to
be the average of the daily Closing Prices for the ten consecutive Trading Days commencing on the Trading Day next succeeding the Expiration Date. 
 (g) In any case in which this Section 13.06 shall require that an adjustment be made following a record date, an announcement date or a Determination Date or Expiration Date, as the case may be, established for
purposes of this Section 13.06, the Company may elect to defer (but only until five Business Days following the filing by the Company with the Trustee of the certificate described in Section 13.09) issuing to the Holder of any Security
converted after such record date or announcement date or Determination Date or Expiration Date the shares of Common Stock and other capital stock of the Company issuable upon such conversion over and above the shares of Common Stock and other
capital stock of the Company issuable upon such conversion only on the basis of the Conversion Rate prior to adjustment; and, in lieu of the shares the issuance of which is so deferred, the Company shall issue or cause its transfer agents to issue
due bills or other appropriate evidence prepared by the Company of the right to receive such shares. If any distribution in respect of which an adjustment to the Conversion Rate is required to be made as of the record date or announcement date or
Determination Date or Expiration Date therefor is not thereafter made or paid by the Company for any reason, the Conversion Rate shall be readjusted to the Conversion Rate which would then be in effect if such record date had not been fixed or such
announcement date or effective date or Determination Date or Expiration Date had not occurred. 
 Section 13.07. No Adjustment.
(a) No adjustment need be made for issuances of Common Stock pursuant to a Company plan for reinvestment of dividends or interest or for a change in the par value or a change to no par value of the Common Stock. 
 (b) To the extent that the Securities become convertible into the right to receive cash, no adjustment need be made thereafter as to the
cash. Interest will not accrue on the cash due. 
  

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 (c) No adjustment in the Conversion Rate shall be made pursuant to this
Section 13.06 if the Holders may participate in the transaction that would otherwise give rise to an adjustment pursuant to Section 13.06. 
 (d) Other than as described above in Section 13.06, no adjustment to the Conversion Rate shall be required for any issuance of Common Stock or convertible or exchangeable securities or rights to purchase Common
Stock or convertible or exchangeable securities. 
 (e) No adjustment in the Conversion Rate shall be made pursuant to
Section 13.06 unless the adjustment would require a change of at least 1% of the Conversion Rate in effect immediately prior to the event otherwise giving rise to such adjustment; provided, however, that any such events for which
adjustments are not made pursuant to this sentence shall be carried forward and such adjustment shall be made at such time as the aggregate amount of all such adjustments heretofore not made would require an adjustment equal to or in excess of 1% of
the Conversion Rate in effect immediately prior to the first of such events. 
 Section 13.08. Adjustment for Tax Purposes. The
Company shall be entitled to make such increases in the Conversion Rate, in addition to those required by Section 13.06, as it in its discretion shall determine to be advisable in order that any stock dividends, subdivisions of shares,
distributions of rights to purchase stock or securities or distributions of securities convertible into or exchangeable for stock hereafter made by the Company to its stockholders shall not be taxable. 
 Section 13.09. Notice of Conversion Rate Adjustment. Whenever the Conversion Rate is adjusted, the Company or, at the request and expense of
the Company, the Trustee, shall promptly mail to Securityholders a notice of the adjustment and file with the Trustee an Officers’ Certificate briefly stating the facts requiring the adjustment and the manner of computing it. Unless and until
the Trustee shall receive an Officers’ Certificate setting forth an adjustment of the Conversion Rate, the Trustee may assume without inquiry that the Conversion Rate has not been adjusted and that the last Conversion Rate of which it has
knowledge remains in effect. 
 Section 13.10. Notice of Certain Transactions. In the event that: 
 (a) the Company takes any action which would require an adjustment in the Conversion Rate; 
 (b) the Company consolidates or merges with, or transfers all or substantially all of its property and assets to, another corporation and
shareholders of the Company must approve the transaction; or 
 (c) there is a dissolution or liquidation of the Company,

 the Company shall give notice to the Trustee and the Company or, at the request and expense of the Company, the Trustee, shall mail to Holders a notice
stating the proposed record or effective date, as the case may be. The Company or, at the request and expense of the Company, the Trustee, shall mail the notice at least ten days before such date. Failure to mail such notice or any defect therein
shall not affect the validity of any transaction referred to in clause (a), (b) or (c) of this Section 13.10. 
  

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 Section 13.11. Effect of Reclassification, Consolidation, Merger or Sale on Conversion
Privilege. If any of the following shall occur, namely: (a) any reclassification or change of shares of Common Stock issuable upon conversion of the Securities (other than a change 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, or any other change for which an adjustment is provided in Section 13.06); (b) any consolidation or merger or combination 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 (c) any sale or conveyance as an entirety or substantially as an entirety of the property and assets of the Company, directly or indirectly, to any Person, then the Company, or such
successor, purchasing or transferee corporation, as the case may be, shall, as a condition precedent to such reclassification, change, combination, consolidation, merger, sale or conveyance, execute and deliver to the Trustee a supplemental
indenture providing that the Holder of each Security then outstanding shall have the right to convert such Security into the kind and amount of shares of stock and other securities and property (including cash) receivable upon such reclassification,
change, combination, consolidation, merger, sale or conveyance by a holder of the number of shares of Common Stock deliverable upon conversion of such Security immediately prior to such reclassification, change, combination, consolidation, merger,
sale or conveyance. Such supplemental indenture shall provide for adjustments of the Conversion Rate which shall be as nearly equivalent as may be practicable to the adjustments of the Conversion Rate provided for in this Article 13. If, in the
case of any such consolidation, merger, combination, sale or conveyance, the stock or other securities and property (including cash) receivable thereupon by a holder of Common Stock include shares of stock or other securities and property of a
person other than the successor, purchasing or transferee corporation, as the case may be, in such consolidation, merger, combination, sale or conveyance, then such supplemental indenture shall also be executed by such other person and shall contain
such additional provisions to protect the interests of the Holders of the Securities as the Board of Directors shall reasonably consider necessary by reason of the foregoing. The provisions of this Section 13.11 shall similarly apply to
successive reclassifications, changes, combinations, consolidations, mergers, sales or conveyances. 
 In the event the Company shall execute
a supplemental indenture pursuant to this Section 13.11, the Company shall promptly file with the Trustee (x) an Officers’ Certificate briefly stating the reasons therefor, the kind or amount of shares of stock or other securities or
property (including cash) receivable by Holders of the Securities upon the conversion of their Securities after any such reclassification, change, combination, consolidation, merger, sale or conveyance, any adjustment to be made with respect thereto
and that all conditions precedent have been complied with and (y) an Opinion of Counsel that all conditions precedent have been complied with, and shall promptly mail notice thereof to all Holders. 
 Section 13.12. Trustee’s Disclaimer. The Trustee shall have no duty to determine when an adjustment under this Article 13 should be
made, how it should be made or what such adjustment should be, but may accept as conclusive evidence of that fact or the correctness of 

  

 61 

 
any such adjustment, and shall be protected in relying upon, an Officers’ Certificate including the Officers’ Certificate with respect thereto
which the Company is obligated to file with the Trustee pursuant to Section 13.09. The Trustee makes no representation as to the validity or value of any securities or assets issued upon conversion of Securities and the Trustee shall not be
responsible for the Company’s failure to comply with any provisions of this Article 13. 
 The Trustee shall not be under any
responsibility to determine the correctness of any provisions contained in any supplemental indenture executed pursuant to Section 13.11, but may accept as conclusive evidence of the correctness thereof, and shall be fully protected in relying
upon, the Officers’ Certificate with respect thereto which the Company is obligated to file with the Trustee pursuant to Section 13.11. 
 Section 13.13. Voluntary Increase. The Company from time to time may increase the Conversion Rate by any amount for any period of time if the period is at least 20 days and if the increase is irrevocable during the period if the
Board of Directors determines that such increase would be in the best interest of the Company or the Board of Directors deems it advisable to avoid or diminish income tax to holders of shares of our Common Stock in connection with any stock or
rights dividend or distribution or similar event, and the Company provides 15 days prior notice of any increase in the Conversion Rate. 
 Section 13.14. Automatic Conversion by the Company. (a) The Company may elect to automatically convert the Securities in whole or in part (an “Automatic Conversion”) at any time on or prior to Stated
Maturity if the Closing Price of the Common Stock has exceeded 130% of the Conversion Price then in effect for at least 20 Trading Days in any 30 Trading Day period, ending within five Trading Days prior to the date of the Automatic Conversion
Notice (as defined below) (the “Automatic Conversion Price”). In the event that the date on which the Securities will be automatically converted (the “Automatic Conversion Date”) occurs on or prior to May 10,
2010, the Company will pay an Additional Interest Payment in respect of the Securities subject to such Automatic Conversion. 
 (b) Unless the Company shall have theretofore called for redemption all of the outstanding Securities, the Company or, at the written request and expense of the Company, the Trustee, shall mail or cause to be mailed to each Holder subject
to such Automatic Conversion notice (the “Automatic Conversion Notice”) of an Automatic Conversion not more than 30 days but not less than 20 days prior to the Automatic Conversion Date. If the Company gives such notice, it shall
also deliver a copy of such Automatic Conversion Notice to the Trustee. If such notice is to be given by the Trustee, the Company shall prepare and provide the form and content of such Automatic Conversion Notice to the Trustee. Such mailing shall
be by first class mail. The notice, if mailed 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 by mail or any defect in
the notice to the Holder of any Security designated for Automatic Conversion as a whole or in part shall not affect the validity of the proceedings for the Automatic Conversion of any other Security. 
 (c) Each Automatic Conversion Notice shall state: 
 (1) the aggregate principal amount of Securities to be automatically converted, 
  

 62 

 (2) the CUSIP or similar number or numbers of the Securities being automatically
converted, 
 (3) the Automatic Conversion Date, 
 (4) that on and after said date interest thereon or on the portion thereof to be automatically converted will cease to accrue, 

(5) whether an Additional Interest Payment, if any, shall be paid by the Company and, if so, whether and to what extent such Additional
Interest Payment shall be paid in cash, by delivery of shares of Common Stock or as a combination of cash and Common Stock, 
 (6) the place or places where such Securities are to be surrendered for conversion, and 
 (7) the Conversion Price
then in effect. 
 (d) If fewer than all of the Securities are to be automatically converted, the Automatic Conversion Notice
shall identify the Securities to be automatically converted (including the CUSIP or similar number or numbers, if any). In case any Security is to be automatically converted in part only, the Automatic Conversion Notice shall state the portion of
the principal amount thereof to be automatically converted and shall state that, on and after the Automatic Conversion Date, upon surrender of such Security, a new Security or Securities in principal amount equal to the unconverted portion thereof
will be issued. 
 (e) If the Company opts to automatically convert less than all of the Outstanding Securities, the Trustee
shall (subject to the applicable procedures of the Depositary) select or cause to be selected the Securities or portions thereof of the Global Securities or the Securities in certificated form to be automatically converted (in principal amounts of
$1,000 or whole multiples thereof) by lot, on a pro rata basis or by another method the Trustee deems fair and appropriate. If any Security selected for partial Automatic Conversion is submitted for voluntary conversion in part after such selection
and before Automatic Conversion, the portion of such Security submitted for voluntary conversion shall be deemed (so far as may be possible) to be from the portion selected for Automatic Conversion. The Securities (or portions thereof) so selected
shall be deemed duly selected for Automatic Conversion for all purposes hereof, notwithstanding that any such Security is submitted for voluntary conversion in part before the mailing of the Automatic Conversion Notice. 
 (f) In the event of an Automatic Conversion, the Company shall issue and deliver a certificate or certificates for the number of shares of
Common Stock issuable upon conversion of the Securities subject to such Automatic Conversion and, to the extent the Company elects to pay any applicable Additional Interest Payment in shares of Common 

  

 63 

 
Stock in respect of the Additional Interest Payment, if any, due on such Securities along with any cash in respect of any fractional shares of Common Stock
otherwise issuable upon conversion or to the extent the Company elects to pay any applicable Additional Interest Payment, if any, in cash, for payment to the Holder as promptly after the Automatic Conversion date, as practicable in accordance with
the provisions of this Article 13, but in no event later than the close of business on the third next succeeding Business Day following such Automatic Conversion Date. 
 (g) All Securities subject to an Automatic Conversion shall be delivered to the Trustee (subject to the applicable procedures of the
Depositary in the case of Global Securities) to be canceled at the direction of the Trustee, which shall dispose of the same as provided in Section 3.09 hereof. Upon presentation of any Security automatically converted in part only, the Company
shall execute and the Trustee shall authenticate and make available for delivery to the Holder thereof, at the expense of the Company, a new Security or Securities, of authorized denominations, in principal amount equal to the unconverted portion of
the Security or Securities so presented (subject to the applicable procedures of the Depositary in the case of Global Securities). 
 (h) Upon conversion, interest on the Securities or portion of Securities so called for Automatic Conversion shall cease to accrue and, except as provided in Section 6.06, to be entitled to any benefit or security under this Indenture,
and the Holders thereof shall have no right in respect of such Securities except the right to receive the shares of Common Stock and cash, if any, to which they are entitled pursuant to this Section 13.14. 
 (i) If any of the provisions of this Section 13.14 are inconsistent with applicable law at the time of such Automatic Conversion,
such law shall govern. 
 Section 13.15. Voluntary Conversion Prior to May 10, 2010. (a) If a Holder elects to
voluntarily convert its Securities as provided in this Article 13 on or prior to May 10, 2010 and prior to the date of any Automatic Conversion Notice (each, a “Voluntary Conversion”), the Company will pay the applicable
Additional Interest Payment to such holder on the date selected for such Voluntary Conversion (the “Voluntary Conversion Date”). In such event, the Company will notify any applicable Holder whether the Additional Interest Payment,
if any, shall be paid by the Company in cash, by delivery of shares of Common Stock or as a combination of cash and Common Stock. 
 (b) In the event of a Voluntary Conversion subject to Section 13.15(a), the Company shall (i) issue and deliver a certificate or certificates for (A) the number of shares of Common Stock issuable upon conversion of the
Securities so converted and, (B) to the extent the Company elects to pay any applicable Additional Interest Payment in shares of Common Stock, in respect of the Additional Interest Payment, if any, due on such Securities and (ii) pay cash
to the Holder in respect of (A) any fractional shares of Common Stock otherwise issuable upon conversion or to the extent the Company elects to pay any applicable Additional Interest Payment, if any, in shares of Common Stock instead of cash
and (B) to the extent the Company elects to pay any applicable Additional Interest Payment in cash, each as promptly after the Voluntary Conversion Date as practicable, in accordance with the provisions of this Article 13, but in no event later
than the close of business on the fifth next succeeding Business Day following such Voluntary Conversion Date. 
  

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 Section 13.16. Company Determination Final. Any determination that the Company or the Board
of Directors must make pursuant to this Article 13 shall be conclusive if made in good faith and in accordance with the provisions of this Article 13, absent manifest error, and set forth in a resolution of the Board of Directors.

  

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

					
	OSCIENT PHARMACEUTICALS CORPORATION
			
	By:	 	  
	 	
	Name:	 	  
	 	
	Title:	 	  
	 	
	
	 U.S. BANK NATIONAL ASSOCIATION,
 as Trustee

			
	By:	 	  
	 	
	Name:	 	  
	 	
	Title:	 	  
	 	

  

 66 

 EXHIBIT A 
 FORM OF FACE OF SECURITY 
 [INCLUDE IF SECURITY IS A GLOBAL SECURITY — UNLESS THIS
CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN
SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (AND ANY PAYMENT HEREON IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST
COMPANY), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN. 
 TRANSFERS OF THIS GLOBAL SECURITY SHALL BE LIMITED TO TRANSFERS IN WHOLE, BUT NOT IN PART, TO NOMINEES OF THE DEPOSITORY TRUST COMPANY, OR TO A SUCCESSOR
THEREOF OR SUCH SUCCESSOR’S NOMINEE AND TRANSFERS OF PORTIONS OF THIS GLOBAL SECURITY SHALL BE LIMITED TO TRANSFERS MADE IN ACCORDANCE WITH THE RESTRICTIONS SET FORTH IN ARTICLE THREE OF THE INDENTURE REFERRED TO ON THE REVERSE HEREOF.]

 Oscient Pharmaceuticals Corporation 
 3.5% Convertible Senior Notes Due 2011 
  

					
	 No. [    ]
	  	CUSIP NO.                     	  	U.S.$[            ]

 Oscient Pharmaceuticals Corporation, a corporation duly organized and validly existing under the
laws of the Commonwealth of Massachusetts (herein called the “Company”), which term includes any successor corporation under the Indenture referred to on the reverse hereof), for value received hereby promises to pay to
[    ], or registered assigns, the principal sum of [    ] United States Dollars ($ ) [INCLUDE IF SECURITY IS A GLOBAL SECURITY — (which amount may from time to time be increased or decreased by
adjustments made on the records of the Trustee, as custodian for the Depositary, in accordance with the rules and procedures of the Depositary)] on April 15, 2011 and to pay interest on said principal sum semi-annually on April 15 and
October 15 of each year, commencing October 15, 2007 at the rate of 3.50% per annum to Holders of record on the immediately preceding April 1 and October 1, respectively. Interest on this Security shall accrue from the most
recent date to which interest has been paid, or if no interest has been paid, from                     , 2007 until the Principal Amount is
paid or duly made available for payment. Except as otherwise provided in the Indenture, the interest payable on this Security pursuant to the Indenture on any April 15 or October 15 will be paid to the Person in whose name this Security
(or one or more predecessor Securities) is registered at the close of business on the Record Date, which shall be April 1 and October 1 (whether or not a Business Day) next preceding such April 15 or October 15, 

  

 A-1 

 
respectively. Payment of the principal of and interest accrued on this Security shall be made by check mailed to the address of the Holder of this Security
specified in the register of Securities, or, upon written application by a Holder of an aggregate Principal Amount of greater than U.S.$2 million to the Security Registrar setting forth wire instructions not later than ten days prior to the relevant
payment date, such Holder may receive payment by wire transfer in immediately available funds, in such lawful money of the United States of America as at the time of payment shall be legal tender for the payment of public and private debts.

 The Issue Date of this Security is
                    , 2007. 
 Reference is made to the further provisions of this Security set forth on the reverse hereof, including, without limitation, provisions giving the Company the right to repurchase this Security commencing May 10, 2010, the right of the
Holder of this Security to convert this Security into Common Stock of the Company, the right of the Company to automatically convert this Security into Common Stock and the right of the Holder of this Security to require the Company to repurchase
this Security upon certain events, in each case, on the terms and subject to the limitations referred to on the reverse hereof and as more fully specified in the Indenture. Such further provisions shall for all purposes have the same effect as
though fully set forth at this place. Capitalized terms used but not defined herein shall have such meanings as are ascribed to such terms in the Indenture. 
 This Security shall be deemed to be a contract made under the laws of the State of New York, and for all purposes shall be construed in accordance with and governed by the laws of said State. 
 This Security shall not be valid or become obligatory for any purpose until the certificate of authentication hereon shall have been manually signed by
the Trustee or a duly authorized authenticating agent under the Indenture. 
 IN WITNESS WHEREOF, the Company has caused this instrument to
be duly executed. 
  

					
	OSCIENT PHARMACEUTICALS CORPORATION
			
	By:	 	  
	 	
		 	Authorized Signatory	 	

  

 A-2 

 EXHIBIT B 
 FORM OF REVERSE OF SECURITY 
 This Security is one of a duly authorized issue of Securities of the
Company, designated as its 3.50% Convertible Senior Notes Due 2011 (the “Securities”), all issued or to be issued under and pursuant to an Indenture, dated as of
                    , 2007 (the “Indenture”), between the Company and U.S. Bank National Association (the
“Trustee”), to which Indenture and all indentures supplemental thereto reference is hereby made for a description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Trustee, the Company
and the Holders of the Securities. 
 The indebtedness evidenced by the Securities is unsecured and unsubordinated senior indebtedness of the
Company and ranks equally with the Company’s other unsecured and unsubordinated senior indebtedness. 
 1. Redemption at the Option
of the Company. No sinking fund is provided for the Securities. The Securities are redeemable as a whole, or from time to time in part, at any time commencing on May 10, 2010 at the option of the Company at a redemption price (the
“Redemption Price”) equal to 100%, expressed as a percentage of the Principal Amount of Securities to be redeemed, together with accrued and unpaid interest to, but excluding, the Redemption Date. 
 2. Repurchase by the Company at the Option of the Holder Upon a Fundamental Change. Subject to the terms and conditions of the Indenture, the
Company shall become obligated, at the option of the Holder, to repurchase the Securities if a Fundamental Change occurs at any time prior to the Stated Maturity at 100% of the Principal Amount plus accrued and unpaid interest to, but excluding, the
Fundamental Change Repurchase Date (the “Fundamental Change Repurchase Price”), which Fundamental Change Repurchase Price will be paid in cash; provided that if a Fundamental Change results from a Change of Control Event, the
Company may elect, subject to the satisfaction of certain conditions described in the Indenture, to pay all or a portion of the Fundamental Change Repurchase Price in Common Stock or a combination of cash and Common Stock. The number of shares of
Common Stock a Holder will receive will equal the quotient obtained by dividing (i) the portion of the Fundamental Change Repurchase Price to be paid in shares of Common Stock by (ii) 97% of the average Closing Price of the shares of
Common Stock for the five Trading Day period ending on the second Business Day immediately preceding the Fundamental Change Repurchase Date, subject to adjustment as described in the Indenture. Notwithstanding the foregoing, a Holder will not have
the right to require the Company to repurchase the Securities upon a Change of Control Event constituting a Fundamental Change if the Closing Price per share of the Company’s Common Stock for any five Trading Days within the period of 10
consecutive Trading Days ending immediately after the later of the Change of Control Event and the public announcement of the Change of Control Event equals or exceeds 110% of the Conversion Price of the Securities in effect on each of those five
Trading Days. 
 3. Withdrawal of Fundamental Change Repurchase Notice. Holders have the right to withdraw, in whole or in part, any
Fundamental Change Repurchase Notice, by delivering to the Paying Agent a written notice of withdrawal in accordance with the provisions of the Indenture. 
  

 B-1 

 4. Payment of Redemption Price and Fundamental Change Repurchase Price. If cash (and/or Common
Stock, if permitted under the Indenture) sufficient to pay the Redemption Price or Fundamental Change Repurchase Price as the case may be, of all Securities or portions thereof to be redeemed or repurchased on a Redemption Date or on a Fundamental
Change, as the case may be, is deposited with the Paying Agent on the Business Day following the Redemption Date or the Fundamental Change Repurchase Date, as the case may be, the Securities to be redeemed or repurchased will cease to be outstanding
and interest will cease to accrue on such Securities (or portions thereof) immediately after such Redemption Date or Fundamental Change Repurchase Date, as the case may be, and the Holder thereof shall have no other rights as such (other than the
right to receive the Redemption Price or Fundamental Change Repurchase Price as the case may be) upon surrender of such Security. 
 5.
Conversion. Subject to the terms and conditions of the Indenture, a Holder may convert each of its Securities into shares of Common Stock at an initial conversion rate of 74.0741 shares per $1,000 Principal Amount of Securities (the
“Conversion Rate”), at any time prior to the close of business on April 14, 2011. The Conversion Rate in effect at any given time is subject to adjustment. A Holder may convert fewer than all of such Holder’s Securities so
long as the Securities converted are an integral multiple of $1,000 principal amount. Accrued and unpaid interest and Liquidated Damages, if any, will be deemed paid in full rather than canceled, extinguished or forfeited; provided, that if this
Security shall be surrendered for conversion during the period from close of business on any Record Date for the payment of interest through the close of business on the Business Day next preceding the following Interest Payment Date, such Security
(or portion thereof being converted) must be accompanied by an amount, in funds acceptable to the Company, equal to the interest payable on such Interest Payment Date on the Principal Amount being converted; provided, however, that no such
payment shall be required if there shall exist at the time of conversion a default in the payment of interest on the Securities. 
 In
addition, to the extent the Holder elects to convert this Security into shares of Common Stock in connection with a transaction that constitutes a Fundamental Change that occurs on or prior to April 15, 2011, pursuant to which 10% or more of
the consideration for the Common Stock (other than cash payments for fractional shares) in such Fundamental Change transaction consists of cash or securities (or other property) that are not traded or scheduled to be traded immediately following
such transaction on a United States national securities exchange or the Nasdaq Global Market, the Company will increase the Conversion Rate for any Securities surrendered for conversion as set forth in Section 11.08 of the Indenture.

 [INCLUDE IF SECURITY IS A GLOBAL SECURITY — In the event of a deposit or withdrawal of an interest in this Security, including
an exchange, transfer, repurchase or conversion of this Security in part only, the Trustee, as custodian of the Depositary, shall make an adjustment on its records to reflect such deposit or withdrawal in accordance with the rules and procedures of
the Depositary.] 
  

 B-2 

 If an Event of Default shall occur and be continuing, the Principal Amount plus accrued and unpaid
interest, through such date on all the Securities may be declared due and payable in the manner and with the effect provided in the Indenture. 
 6. Automatic Conversion by the Company. If at any time the Closing Price of the shares of Common Stock exceeds 130% of the Conversion Price for at least 20 Trading Days during any consecutive 30 Trading Day period ending within five
Trading Days prior to the notice of Automatic Conversion, the Company may elect to automatically convert this Security pursuant to the terms of the Indenture. In the event that the date that this Security or any portion hereof (in integral multiples
of $1,000) will be automatically converted occurs on or prior to May 10, 2010, the Company will pay to the Holder an Additional Interest Payment in cash or, at the Company’s option, shares of Common Stock, valued at 90% of the Automatic
Conversion Price that is in effect at that time, or a combination of cash and shares of Common Stock. 
 7. Voluntary Conversion by the
Holder. If a Holder elects to voluntarily convert this Security, or any portion hereof (in integral multiples of $1,000), at any time on or prior to May 10, 2010, the Holder will receive an Additional Interest Payment in cash or, at the
Company’s option, shares of Common Stock, or a combination of cash and shares of Common Stock, upon conversion so long as the Company has not previously mailed an Automatic Conversion Notice to Holders. In the event that the Company elects to
pay all or any portion of the Additional Interest Payment, if any, on the Securities in shares of Common Stock upon a voluntary conversion, such shares of Common Stock will be valued at the Conversion Price then in effect. 
 8. Amendment; Waiver. 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 Securities under the Indenture at any time by the Company and the Trustee with the consent of the Holders of not less than a majority in aggregate Principal Amount of the
Outstanding Securities. The Indenture also contains provisions permitting the Holders of specified percentages in aggregate Principal Amount of the Outstanding Securities, on behalf of the Holders of all the Securities, 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 any provision of or applicable to this Security shall be conclusive and binding upon
such Holder and upon all future Holders of this Security and of any 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 Security.

 9. Defaults and Remedies. Under the Indenture, Events of Default include: (1) default in the payment of interest on any
Securities when due and payable and such default continues for a period of 30 days; (2) default in the payment of the Principal Amount, Redemption Price, Additional Interest Payment or Fundamental Change Repurchase Price on any Security when it
becomes due and payable; (3) default in the performance of any covenant, agreement or condition of the Company under the Indenture or the Securities (other than a default in (1) or (2) above) and such default continues for a period of
60 days after there has been given written notice of such failure (other than the Company’s obligations to timely file 

  

 B-3 

 
its annual and quarterly reports as set forth in the Indenture) to the Company by the Trustee or to the Company and the Trustee by Holders of at least 25% in
aggregate Principal Amount of the Outstanding Securities; (4) default in the Company’s obligation to convert the Securities into shares of its Common Stock upon exercise of a Holder’s conversion rights; (5) default by the Company
or any Subsidiary in the payment of the principal or interest on any loan agreement or other instrument under which there may be outstanding, or by which there may be evidenced, any debt for borrowed money in excess of $20.0 million in the aggregate
of the Company and any Subsidiary (other than indebtedness for borrowed money secured only by the real property to which the indebtedness relates and which is non-recourse to the Company or to such Subsidiary), resulting in such debt becoming or
declared due and payable prior to its stated maturity, and such acceleration has not been rescinded or annulled within 30 days after written notice has been received by the Company or such Subsidiary from the Trustee or by the Trustee, the Company
and such Subsidiary by Holders of at least 25% in Principal Amount of Outstanding Securities (and such default has not been remedied or cured by the Company within the applicable cure period); (6) failure by the Company to give the Fundamental
Change Company Notice; (7) failure by the Company to file its annual or quarterly reports with the Commission in accordance with the Indenture or to comply with the requirements of Section 314(a)(1) of the Trust Indenture Act (subject to
the requirements in the Indenture to provide notice and the extension rights provided to the Company in the Indenture); and (8) certain events of bankruptcy, insolvency or reorganization of the Company. If an Event of Default (other than as a
result of certain events of bankruptcy, insolvency or reorganization of the Company) occurs and is continuing, the Trustee or the Holders of at least 25% in aggregate Principal Amount of the Outstanding Securities may declare the Principal Amount
plus accrued and unpaid interest on all the Outstanding Securities to be due and payable immediately, all as and to the extent provided in the Indenture. If an Event of Default occurs as a result of certain events of bankruptcy, insolvency or
reorganization of the Company, the Principal Amount plus accrued and unpaid interest on all Outstanding Securities shall become due and payable immediately without any declaration or other Act on the part of the Trustee or any Holder. 
 As provided in and subject to the provisions of the Indenture, the Holder of this Security shall not have the right to institute any proceeding with
respect to the Indenture or for the appointment of a receiver or trustee or for any other remedy thereunder, unless such Holder shall have previously given the Trustee written notice of a continuing Event of Default with respect to the Securities,
the Holders of not less than 25% in aggregate Principal Amount of the Outstanding Securities shall have made written request to the Trustee to institute proceedings in respect of such Event of Default as Trustee and offered the Trustee reasonable
indemnity satisfactory to it, the Trustee shall not have received from the Holders of a majority in Principal Amount of Outstanding Securities a direction inconsistent with such request, and the Trustee shall have failed to institute any such
proceeding, for 60 days after receipt of such notice, request and offer of indemnity. The foregoing shall not apply to any suit instituted by the Holder of this Security for the enforcement of any payment of said principal hereof or interest hereon
on or after the respective due dates expressed herein or for the enforcement of any conversion right. 
 No reference herein to the Indenture
and no provision of this Security or of the Indenture shall alter or impair the obligation of the Company, which is absolute and 

  

 B-4 

 
unconditional, to pay the Principal Amount or Fundamental Change Repurchase Price of or interest on this Security at the times, place and rate, and in the
coin or currency, herein prescribed. 
 10. Denominations; Transfer; Exchange. As provided in the Indenture and subject to certain
limitations therein set forth, the transfer of this Security is registrable in the Security Register, upon surrender of this Security for registration of transfer at the office or agency of the Company in The City of New York, duly endorsed by, or
accompanied by a written instrument of transfer in form satisfactory to the Company and the Security Registrar duly executed by, the Holder hereof or his attorney duly authorized in writing, and thereupon one or more new Securities, of authorized
denominations and for the same aggregate Principal Amount, will be issued to the designated transferee or transferees. 
 The Securities are
issuable only in registered form in denominations of $1,000 and any integral multiple of $1,000 above that amount, as provided in the Indenture and subject to certain limitations therein set forth. Securities are exchangeable for a like aggregate
Principal Amount of Securities 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. 
 11. Persons Deemed Owners. Prior to due presentment of this 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 Security is registered as the owner hereof for all purposes, whether or not this Security be overdue, and neither the Company, the Trustee nor any such agent shall be affected by notice
to the contrary. 
 12. 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 right of survivorship and not as tenants in common), CUST (=custodian), and U/G/M/A (=Uniform Gift to Minors Act). 
 13. Governing Law. This Security shall be governed by and construed in accordance with the laws of the State of New York. 
 All terms used in this Security that are defined in the Indenture shall have the meanings assigned to them in the Indenture. 
  

 B-5 

 ASSIGNMENT FORM 
 If you want to assign this Security, fill in the form below and have your signature guaranteed: 
 I or we
assign and transfer this Security to: 
  

	
	  
	  

	
	(Print or type name, address and zip code and social security or tax ID number of assignee)

 and irrevocably appoint
                                        
agent to transfer this Security on the books of the Company. The agent may substitute another to act for him. 
  

					
	 Date:
                                       
 
	 	Signed:
                                       
 	 	
	
	 (Sign exactly as your name appears on the other side of this Security)

	
	 Signature Guarantee:
                                        
                                 

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

 CONVERSION NOTICE 
 If you want to convert this Security into Common Stock of the Company, check the box: 
 To convert only part
of this Security, state the Principal Amount to be converted (which must be $1,000 or an integral multiple of $1,000): $              
 If you want the stock certificate made out in another person’s name, fill in the form below: 
  

	
	 (Insert other person’s social security or tax
ID no.)
  

	
	 
	
	 

 (Print or type other person’s name, address and zip code) 
  

					
	 Date:
                                       
 
	 	Signed:
                                       
 	 	
	
	 (Sign exactly as your name appears on the other side of this Security)

	
	 Signature Guarantee:
                                        
                                 

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

 EXHIBIT C 
 FORM OF TRUSTEE’S CERTIFICATE OF AUTHENTICATION 
 U.S. Bank National Association, as Trustee, certifies
that this is one of the Securities referred to in the within-mentioned Indenture. 
  

									
	 Dated:
                    
	 		 	U.S. BANK NATIONAL ASSOCIATION, as Trustee
					
		 		 	By:	 	  
	 	
		 		 		 	Authorized Signatory	 	

  

 C-1 

 EXHIBIT D 
 FORM OF FUNDAMENTAL CHANGE REPURCHASE NOTICE 
                     , 20     
  

							
	                                      
                          	  		  		  	
	                                      
                          	  		  		  	
	                                      
                          	  		  		  	
	                                      
                          	  		  		  	

 Attention: [Institutional Trust Services] 
  

	 	Re:	Oscient Pharmaceuticals Corporation (the “Company”)  

 3.50% Convertible Senior Notes Due 2011 
 This is a Fundamental Change Repurchase Notice as defined
in Section 11.08 of the Indenture dated as of                     , 2007 (the “Indenture”) between the Company and U.S.
Bank National Association, as Trustee. Terms used but not defined herein shall have the meanings ascribed to them in the Indenture. 
 Certificate No(s). of
Securities:
                                        

 I intend to deliver the following aggregate Principal Amount of Securities for purchase by the Company pursuant to Section 11.08 of
the Indenture (in multiples of $1,000): 
 $              
 I hereby agree that the Securities will be purchased as of the Fundamental Change Repurchase Date pursuant to the terms and conditions thereof and of the
Indenture. 
  

			
	Signed:	 	  

	  

	Social Security or Other Taxpayer Identification Number

  

 D-1 

 SCHEDULE I 
 The following table sets forth the amount, if any, by which the applicable Conversion Rate will increase for each Share Price and effective date set forth below. 
  

																							
	 	  	$7.50	  	$9.50	  	$11.50	  	$13.50	  	$15.50	  	$17.50	  	$19.50	  	$21.50	  	$23.50	  	$25.50	  	$27.50
	 Effective Date
	  		  		  		  		  		  		  		  		  		  		  	
	 April 26, 2007
	  	39.0	  	24.6	  	16.4	  	11.1	  	7.8	  	5.6	  	4.6	  	4.1	  	3.8	  	3.5	  	3.2
	 April 15, 2008
	  	39.0	  	23.5	  	15.1	  	9.6	  	5.8	  	3.7	  	2.8	  	2.6	  	2.3	  	2.2	  	2.0
	 April 15, 2009
	  	39.0	  	23.3	  	12.9	  	7.6	  	3.5	  	1.7	  	1.0	  	0.9	  	0.9	  	0.8	  	0.7
	 April 15, 2010
	  	39.0	  	22.2	  	8.6	  	0.3	  	0.0	  	0.0	  	0.0	  	0.0	  	0.0	  	0.0	  	0.0
	 April 15, 2011
	  	39.0	  	22.2	  	8.6	  	0.0	  	0.0	  	0.0	  	0.0	  	0.0	  	0.0	  	0.0	  	0.0

  

 I-1

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