EXHIBIT 4.5



CURAGEN CORPORATION



AS ISSUER



THE BANK OF NEW YORK, AS TRUSTEE



UP TO $120,000,000 AGGREGATE PRINCIPAL AMOUNT OF

4.0% CONVERTIBLE SUBORDINATED NOTES DUE 2011



INDENTURE

DATED AS OF FEBRUARY 17, 2004



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|                                                     |  |                                                           |  |   
|---------------------------------------------------- |  | --------------------------------------------------------- |  | --
|ARTICLE I DEFINITIONS AND INCORPORATION BY REFERENCE |  | 1                                                        
|                                                     |  |                                                          
|Section 1.1.                                         |  | Definitions                                               |  | 1 
|                                                     |  |                                                          
|Section 1.2.                                         |  | Incorporation by Reference of Trust Indenture Act         |  | 10
|                                                     |  |                                                          
|Section 1.3.                                         |  | Rules of Construction                                     |  | 10
|                                                     |  |                                                          
|Section 1.4.                                         |  | Acts of Holders                                           |  | 10
|                                                     | 
|ARTICLE II THE SECURITIES                            |  | 11                                                       
|                                                     |  |                                                          
|Section 2.1.                                         |  | Form and Dating                                           |  | 11
|                                                     |  |                                                          
|Section 2.2.                                         |  | Execution and Authentication                              |  | 12
|                                                     |  |                                                          
|Section 2.3.                                         |  | Registrar, Paying Agent and Conversion Agent              |  | 13
|                                                     |  |                                                          
|Section 2.4.                                         |  | Paying Agent to Hold Assets in Trust                      |  | 14
|                                                     |  |                                                          
|Section 2.5.                                         |  | Holder Lists                                              |  | 14
|                                                     |  |                                                          
|Section 2.6.                                         |  | Transfer and Exchange                                     |  | 15
|                                                     |  |                                                          
|Section 2.7.                                         |  | Replacement Securities                                    |  | 16
|                                                     |  |                                                          
|Section 2.8.                                         |  | Outstanding Securities; Determinations of Holders Action |  | 16
|                                                     |  |                                                          
|Section 2.9.                                         |  | Temporary Securities                                      |  | 17
|                                                     |  |                                                          
|Section 2.10.                                        |  | Cancellation                                              |  | 17
|                                                     |  |                                                          
|Section 2.11.                                        |  | Persons Deemed Owners                                     |  | 18
|                                                     |  |                                                          
|Section 2.12.                                        |  | Additional Transfer and Exchange Requirements             |  | 18
|                                                     |  |                                                          
|Section 2.13.                                        |  | CUSIP Numbers                                             |  | 24
|                                                     |  |                                                          
|Section 2.14.                                        |  | Ranking                                                   |  | 24
|                                                     | 
|ARTICLE III REDEMPTION                               |  | 25                                                       
|                                                     |  |                                                          
|Section 3.1.                                         |  | The Companys Right to Redeem; Notice to Trustee          |  | 25
|                                                     |  |                                                          
|Section 3.2.                                         |  | Selection of Securities to Be Redeemed                    |  | 25
|                                                     |  |                                                          
|Section 3.3.                                         |  | Notice of Redemption                                      |  | 25
|                                                     |  |                                                          
|Section 3.4.                                         |  | Effect of Notice of Redemption                            |  | 26
|                                                     |  |                                                          
|Section 3.5.                                         |  | Deposit of Redemption Price                               |  | 26
|                                                     |  |                                                          
|Section 3.6.                                         |  | Securities Redeemed in Part                               |  | 27
|                                                     |  |                                                          
|Section 3.7.                                         |  | Repayment to the Company                                  |  | 27
|                                                     |  |                                                          
|Section 3.8.                                         |  | No Sinking Fund                                           |  | 27
|                                                     | 
|ARTICLE IV SUBORDINATION                             |  | 27                                                       
|                                                     |  |                                                          
|Section 4.1.                                         |  | Agreement of Subordination                                |  | 27
|                                                     |  |                                                          
|Section 4.2.                                         |  | Liquidation; Dissolution; Bankruptcy                      |  | 27



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|--------------------------------------------------------------------- |  | ----------------------------------------------------------------------------------------------------- |  | ----
|                                                                      |  |                                                                                                       |  | Page
|                                                                      |  |                                                                                                      
|Section 4.3.                                                          |  | Default on Designated Senior Indebtedness                                                             |  | 28  
|                                                                      |  |                                                                                                      
|Section 4.4.                                                          |  | Acceleration of Convertible Subordinated Notes                                                        |  | 29  
|                                                                      |  |                                                                                                      
|Section 4.5.                                                          |  | When Distribution Must Be Paid Over                                                                   |  | 29  
|                                                                      |  |                                                                                                      
|Section 4.6.                                                          |  | Subordination Notice by Company                                                                       |  | 29  
|                                                                      |  |                                                                                                      
|Section 4.7.                                                          |  | Subrogation                                                                                           |  | 30  
|                                                                      |  |                                                                                                      
|Section 4.8.                                                          |  | Relative Rights                                                                                       |  | 31  
|                                                                      |  |                                                                                                      
|Section 4.9.                                                          |  | Subordination May Not Be Impaired by Company                                                          |  | 31  
|                                                                      |  |                                                                                                      
|Section 4.10.                                                         |  | Distribution or Notice to Representative                                                              |  | 31  
|                                                                      |  |                                                                                                      
|Section 4.11.                                                         |  | Rights of Trustee and Paying Agent                                                                    |  | 31  
|                                                                      |  |                                                                                                      
|Section 4.12.                                                         |  | Authorization to Effect Subordination                                                                 |  | 32  
|                                                                      |  |                                                                                                      
|Section 4.13.                                                         |  | Article Applicable to Paying Agents                                                                   |  | 32  
|                                                                      |  |                                                                                                      
|Section 4.14.                                                         |  | Senior Indebtedness Entitled to Rely                                                                  |  | 32  
|                                                                      |  |                                                                                                      
|Section 4.15.                                                         |  | Permitted Payments                                                                                    |  | 32  
|                                                                      | 
|ARTICLE V PURCHASE AT THE OPTION OF HOLDERS UPON A FUNDAMENTAL CHANGE |  | 32                                                                                                   
|                                                                      |  |                                                                                                      
|Section 5.1.                                                          |  | Fundamental Change Put                                                                                |  | 32  
|                                                                      |  |                                                                                                      
|Section 5.2.                                                          |  | Conditions to the Companys Election to Pay the Fundamental Change Purchase Price in Applicable Stock |  | 36  
|                                                                      |  |                                                                                                      
|Section 5.3.                                                          |  | Effect of Fundamental Change Purchase Notice                                                          |  | 36  
|                                                                      |  |                                                                                                      
|Section 5.4.                                                          |  | Deposit of Fundamental Change Purchase Price                                                          |  | 37  
|                                                                      |  |                                                                                                      
|Section 5.5.                                                          |  | Securities Purchased in Part                                                                          |  | 38  
|                                                                      |  |                                                                                                      
|Section 5.6.                                                          |  | Covenant to Comply With Securities Laws Upon Purchase of Securities                                   |  | 38  
|                                                                      |  |                                                                                                      
|Section 5.7.                                                          |  | Repayment to the Company                                                                              |  | 38  
|                                                                      | 
|ARTICLE VI COVENANTS                                                  |  | 38                                                                                                   
|                                                                      |  |                                                                                                      
|Section 6.1.                                                          |  | Payment of Securities                                                                                 |  | 38  
|                                                                      |  |                                                                                                      
|Section 6.2.                                                          |  | SEC and Other Reports to the Trustee                                                                  |  | 39  
|                                                                      |  |                                                                                                      
|Section 6.3.                                                          |  | Compliance Certificate                                                                                |  | 40  
|                                                                      |  |                                                                                                      
|Section 6.4.                                                          |  | Further Instruments and Acts                                                                          |  | 40  
|                                                                      |  |                                                                                                      
|Section 6.5.                                                          |  | Maintenance of Office or Agency of the Trustee, Registrar, Paying Agent and Conversion Agent          |  | 40  



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|                                   |  |                                                    |  |     
|---------------------------------- |  | -------------------------------------------------- |  | ----
|                                   |  |                                                    |  | Page
|                                   |  |                                                   
|Section 6.6.                       |  | Delivery of Information Required Under Rule 144A   |  | 41  
|                                   |  |                                                   
|Section 6.7.                       |  | Waiver of Stay, Extension or Usury Laws            |  | 41  
|                                   |  |                                                   
|Section 6.8.                       |  | Statement by Officers as to Default                |  | 41  
|                                   | 
|ARTICLE VII SUCCESSOR CORPORATION  |  | 42                                                
|                                   |  |                                                   
|Section 7.1.                       |  | When Company May Merge or Transfer Assets          |  | 42  
|                                   | 
|ARTICLE VIII DEFAULTS AND REMEDIES |  | 43                                                
|                                   |  |                                                   
|Section 8.1.                       |  | Events of Default                                  |  | 43  
|                                   |  |                                                   
|Section 8.2.                       |  | Acceleration                                       |  | 44  
|                                   |  |                                                   
|Section 8.3.                       |  | Other Remedies                                     |  | 45  
|                                   |  |                                                   
|Section 8.4.                       |  | Waiver of Existing Defaults                        |  | 45  
|                                   |  |                                                   
|Section 8.5.                       |  | Control by Majority                                |  | 45  
|                                   |  |                                                   
|Section 8.6.                       |  | Limitation on Suits                                |  | 46  
|                                   |  |                                                   
|Section 8.7.                       |  | Rights of Holders to Receive Payment or to Convert |  | 46  
|                                   |  |                                                   
|Section 8.8.                       |  | Collection Suit by Trustee                         |  | 46  
|                                   |  |                                                   
|Section 8.9.                       |  | Trustee May File Proofs of Claim                   |  | 47  
|                                   |  |                                                   
|Section 8.10.                      |  | Priorities                                         |  | 47  
|                                   |  |                                                   
|Section 8.11.                      |  | Undertaking for Costs                              |  | 48  
|                                   | 
|ARTICLE IX TRUSTEE                 |  | 48                                                
|                                   |  |                                                   
|Section 9.1.                       |  | Duties of Trustee                                  |  | 48  
|                                   |  |                                                   
|Section 9.2.                       |  | Rights of Trustee                                  |  | 49  
|                                   |  |                                                   
|Section 9.3.                       |  | Individual Rights of Trustee                       |  | 51  
|                                   |  |                                                   
|Section 9.4.                       |  | Trustees Disclaimer                               |  | 51  
|                                   |  |                                                   
|Section 9.5.                       |  | Notice of Defaults                                 |  | 51  
|                                   |  |                                                   
|Section 9.6.                       |  | Reports by Trustee to Holders                      |  | 52  
|                                   |  |                                                   
|Section 9.7.                       |  | Compensation and Indemnity                         |  | 52  
|                                   |  |                                                   
|Section 9.8.                       |  | Replacement of Trustee                             |  | 53  
|                                   |  |                                                   
|Section 9.9.                       |  | Successor Trustee by Merger                        |  | 54  
|                                   |  |                                                   
|Section 9.10.                      |  | Eligibility; Disqualification                      |  | 54  
|                                   |  |                                                   
|Section 9.11.                      |  | Preferential Collection of Claims Against Company  |  | 54  
|                                   | 
|ARTICLE X DISCHARGE OF INDENTURE   |  | 54                                                



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|                           |  |                                                           |  |     
|-------------------------- |  | --------------------------------------------------------- |  | ----
|                           |  |                                                           |  | Page
|                           |  |                                                          
|Section 10.1.              |  | Discharge of Liability on Securities                      |  | 54  
|                           |  |                                                          
|Section 10.2.              |  | Repayment to the Company                                  |  | 54  
|                           | 
|ARTICLE XI AMENDMENTS      |  | 55                                                       
|                           |  |                                                          
|Section 11.1.              |  | Without Consent of Holders                                |  | 55  
|                           |  |                                                          
|Section 11.2.              |  | With Consent of Holders                                   |  | 56  
|                           |  |                                                          
|Section 11.3.              |  | Compliance with Trust Indenture Act                       |  | 57  
|                           |  |                                                          
|Section 11.4.              |  | Revocation and Effect of Consents, Waivers and Actions    |  | 57  
|                           |  |                                                          
|Section 11.5.              |  | Notation on or Exchange of Securities                     |  | 58  
|                           |  |                                                          
|Section 11.6.              |  | Trustee to Sign Supplemental Indentures                   |  | 58  
|                           |  |                                                          
|Section 11.7.              |  | Effect of Supplemental Indentures                         |  | 58  
|                           | 
|ARTICLE XII CONVERSION     |  | 58                                                       
|                           |  |                                                          
|Section 12.1.              |  | Conversion Right                                          |  | 58  
|                           |  |                                                          
|Section 12.2.              |  | Conversion Procedures; Conversion Rate; Fractional Shares |  | 60  
|                           |  |                                                          
|Section 12.3.              |  | Adjustment of Conversion Rate                             |  | 62  
|                           |  |                                                          
|Section 12.4.              |  | Consolidation or Merger of the Company                    |  | 71  
|                           |  |                                                          
|Section 12.5.              |  | Notice of Adjustment                                      |  | 72  
|                           |  |                                                          
|Section 12.6.              |  | Notice in Certain Events                                  |  | 72  
|                           |  |                                                          
|Section 12.7.              |  | Company To Reserve Stock; Registration; Listing           |  | 73  
|                           |  |                                                          
|Section 12.8.              |  | Taxes on Conversion                                       |  | 74  
|                           |  |                                                          
|Section 12.9.              |  | Conversion After Regular Record Date                      |  | 74  
|                           |  |                                                          
|Section 12.10.             |  | Company Determination Final                               |  | 74  
|                           |  |                                                          
|Section 12.11.             |  | Responsibility of Trustee for Conversion Provisions       |  | 75  
|                           |  |                                                          
|Section 12.12.             |  | Unconditional Right of Holders to Convert                 |  | 75  
|                           | 
|ARTICLE XIII TAX TREATMENT |  | 75                                                       
|                           |  |                                                          
|Section 13.1.              |  | Tax Treatment                                             |  | 75  
|                           | 
|ARTICLE XIV MISCELLANEOUS  |  | 76                                                       
|                           |  |                                                          
|Section 14.1.              |  | Trust Indenture Act Controls                              |  | 76  
|                           |  |                                                          
|Section 14.2.              |  | Notices                                                   |  | 76  
|                           |  |                                                          
|Section 14.3.              |  | Communication by Holders with Other Holders               |  | 77  
|                           |  |                                                          
|Section 14.4.              |  | Certificate and Opinion as to Conditions Precedent        |  | 77  



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|               |  |                                                               |  |     
|-------------- |  | ------------------------------------------------------------- |  | ----
|               |  |                                                               |  | Page
|               |  |                                                              
|Section 14.5.  |  | Statements Required in Certificate or Opinion                 |  | 77  
|               |  |                                                              
|Section 14.6.  |  | Separability Clause                                           |  | 78  
|               |  |                                                              
|Section 14.7.  |  | Rules by Trustee, Paying Agent, Conversion Agent, Registrar   |  | 78  
|               |  |                                                              
|Section 14.8.  |  | Legal Holidays                                                |  | 78  
|               |  |                                                              
|Section 14.9.  |  | Governing Law; Submission to Jurisdiction; Service of Process |  | 78  
|               |  |                                                              
|Section 14.10. |  | No Recourse Against Others                                    |  | 79  
|               |  |                                                              
|Section 14.11. |  | Successors                                                    |  | 79  
|               |  |                                                              
|Section 14.12. |  | Multiple Originals                                            |  | 79  



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|          |  |                                                                    
|--------- |  | -------------------------------------------------------------------
|          | 
|EXHIBIT A |  | Form  of Security                                                  
|          | 
|EXHIBIT B |  | Form  of Restrictive Legend for Common Stock Issues Upon Conversion



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INDENTURE, dated as of February 17, 2004, between CURAGEN CORPORATION, a Delaware corporation (the
Company), and The Bank of New York, a New York banking corporation, as Trustee (the Trustee).



Each party agrees as follows for the benefit of the other party and for the equal and ratable benefit of the Holders of the Companys 4.0%
Convertible Subordinated Notes due 2011:



ARTICLE I



DEFINITIONS AND INCORPORATION BY REFERENCE



Section 1.1. Definitions.



Additional Interest has the meaning set forth in the
Registration Rights Agreement. All references herein or in the Securities to interest accrued or payable as of any date shall include any Additional Interest accrued or payable as of such date as provided in the Registration Rights Agreement.



Additional Shares has the meaning set forth
in the Registration Rights Agreement.



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 or cause the direction of 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 set forth in Section 2.1(c).



Applicable Procedures means, with respect to any transfer or transaction involving a Global Security or
beneficial interest therein, the rules and procedures of the Depositary for such Security, in each case to the extent applicable to such transaction and as in effect from time to time.



Applicable Stock means (a) the Common Stock and (b) in the event of a transaction referred to in Section
12.4 in which the Securities become convertible into Equity Interests of another person. such Equity Interests or any other Equity Interests into which such Equity Interests shall be reclassified or changed.



Bankruptcy Law means Title 11, United States Code, or any
similar United States federal or state law for the relief of debtors.



Board of Directors means either the board of directors of the Company or any duly authorized committee of such board.



Board Resolution means a resolution of the Board of Directors.



Business Day means each day of the year other than a Saturday or a Sunday or other day on which banking
institutions in the City of New York are required or authorized by law, regulation or executive order to close.



Cash means such coin or currency of the United States as at any time of payment is legal tender for the payment of public and private
debts.





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Certificated Securities means Securities that are in substantially the form attached
hereto as Exhibit A and that do not include the information called for by footnotes 1 and 2 thereof.



Closing Sale Price of a share of Applicable Stock on any date means the closing per share sale price (or, if no closing sale price is
reported, the average of the bid and ask prices or, if more than one in either case, the average of the average bid and the average ask prices) on such date as reported by the Nasdaq National Market system or, if the shares of Applicable Stock are
not quoted on the Nasdaq National Market system, as reported on a national securities exchange. If the Applicable Stock is not listed for trading on a national securities exchange and not quoted by the Nasdaq National Market on the relevant date,
the Closing Sale Price shall be the last quoted bid for the Applicable Stock in the over-the-counter market on the relevant date as reported by the National Quotation Bureau or similar organization. If the Applicable Stock is not so
quoted, the Closing Sale Price shall be the average of the midpoint of the last bid and ask prices for the Applicable Stock on the relevant date from each of at least three nationally recognized independent investment banking firms
selected by the Company for this purpose.



Code means the Internal Revenue Code of 1986, as amended.



Common Stock means the authorized common stock, $0.01 par value per share, of the Company or any other shares of Equity Interest of the Company into which such Common Stock shall be reclassified or
changed; provided, that after the consummation of any transaction referred to in Section 12.4, all references to Common Stock shall, to the extent necessary to protect the interests of the Holders, become references to Applicable
Stock.



Company means the party named
as the Company in the first paragraph of this Indenture until a successor replaces it pursuant to the applicable provisions of this Indenture and, thereafter, means such successor. The foregoing sentence shall likewise apply to any
subsequent successor or successors to such successors.



Company Request or Company Order means a written request or order signed in the name of the Company by any two Officers, at least one of whom is the Chief Executive Officer or the Chief Financial
Officer.



Conversion Agent has the meaning
set forth in Section 2.3.



Conversion Notice
has the meaning set forth in Section 12.2(c).



Conversion Price means, at any time, $1,000 divided by the Conversion Rate in effect at such time, rounded to two decimal places (rounded up if the third decimal place thereof is 5 or more and otherwise rounded down).



Conversion Rate means the number of shares
of Common Stock issuable upon conversion of each $1,000 of Principal Amount of Securities, which is initially 103.2429 shares, subject to adjustments as set forth in this Indenture.



Corporate Trust Office means the office of the Trustee at which at any time its corporate trust business
shall be principally administered, which office at the date hereof is located at 101 Barclay Street, New York, New York 10286, Attention: Corporate Trust Division - Corporate Finance Unit or such other address as the Trustee may designate from time
to time by notice to the Holders and the Company, or the principal corporate trust office of any



2



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successor Trustee (or such other address as a successor Trustee may designate from time to time by notice to the Holders and the Company).



Current Market Price has the meaning set forth in Section
12.3(g).



Custodian means any receiver,
trustee, assignee, liquidator, custodian or similar official under any Bankruptcy Law.



Default means, when used with respect to the Securities, any event which is, or after notice or passage of time or both would be, an Event of Default.



Depositary means, with respect to any Global Securities, a
securities clearing agency that is registered as such under the Exchange Act and is designated by the Company to act as Depositary for such Global Securities (or any successor securities clearing agency so registered), which shall initially be DTC.



Designated Senior Indebtedness means any
particular Senior Indebtedness if the instrument creating or evidencing the same or the assumption thereof (or related agreements or documents to which the Company is a party) expressly provides that such Indebtedness shall be Designated
Senior Indebtedness for purposes of this Indenture (provided that such instrument, agreement or other document may place limitations and conditions on the right of such Senior Indebtedness to exercise the rights of Designated Senior
Indebtedness.)



Designated Subsidiary means
any existing or future, direct or indirect, Subsidiary of the Company that would constitute a significant subsidiary as such term is defined under Rule 1.02 of Regulation S-X.



Distributed Assets has the meaning set forth in Section 12.3(d).



DTC means The Depository Trust Company, a New York
corporation.



EDGAR has the meaning set
forth in Section 6.2(b).



Equity Interest of
any Person means any and all shares, interests, rights to purchase, warrants, options, participations or other equivalents of or interests in (however designated) corporate stock or other equity participations, including partnership interests,
whether general or limited, of such Person.



Event of
Default has the meaning set forth in Section 8.1.



Exchange Act means the United States Securities Exchange Act of 1934, as amended.



Ex-Dividend Time means, with respect to any issuance or distribution on Common Stock, the first Trading Day on which the Common Stock
trades regular way on the principal securities market on which the Common Stock is then traded without the right to receive such issuance or distribution.



Expiration Time has the meaning set forth in Section 12.3(e).



Fair Market Value has the meaning set forth in Section 12.3(g).



Fundamental Change means the occurrence of any of the
following events: (i) any person or group (as such terms are used in Sections 13(d) and 14(d) of the Exchange Act), becomes the beneficial owner (as defined in Rules 13d-3 and 13d-5 under the Exchange Act, except
that a Person shall be deemed to have beneficial ownership of all shares that such Person has the right to acquire, whether such right is exercisable immediately or only after the passage



3



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of time), directly or indirectly, of more than 50% of the total outstanding Voting Stock of the Company; (ii) during any period of two consecutive years,
individuals who at the beginning of such period constituted the Board of Directors (together with any new directors whose election to such Board of Directors or whose nomination for election by the stockholders of the Company, was approved by a vote
of at least 662/3% of the directors then still in office who were either directors at the beginning of such period or whose election or nomination for election was previously so approved) cease for any reason to constitute a majority of such
Board of Directors then in office; (iii) the Company consolidates with or merges with or into any Person or conveys, transfers, sells or otherwise disposes of or leases all or substantially all of its assets to any Person, or any corporation
consolidates with or merges into or with the Company, in any such event pursuant to a transaction in which the outstanding Voting Stock of the Company is changed into or exchanged for cash, securities or other property, other than (1) any such
transaction where the outstanding Voting Stock of the Company is not changed or exchanged at all (except to the extent necessary to reflect a change in the jurisdiction of incorporation of the Company) or (2) where the stockholders of the Company
immediately before such transaction own, directly or indirectly, immediately following such transaction, more than 50% of the total outstanding Voting Stock of the surviving corporation; or (iv) the Company is liquidated or dissolved or adopts a
plan of liquidation or dissolution other than in a transaction which complies with the provisions described under Article VII.



A Fundamental Change shall not be deemed to have occurred if either:



(1) the last Closing Sale Price of the Common Stock for each of at least five Trading Days within:



| | (x) | the period of the ten consecutive Trading Days immediately after the later of the Fundamental Change or the public announcement of the Fundamental Change, in the case of a
Fundamental Change resulting solely from a Fundamental Change in clause (i) of the definition of Fundamental Change; or
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (y) | the period of the ten consecutive Trading Days immediately preceding the Fundamental Change, in the case of a Fundamental Change resulting from a Fundamental Change in clauses (ii),
(iii) or (iv) of the definition of Fundamental Change;
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



is at
least equal to 105% of the quotient where the numerator is the Principal Amount and the denominator is the Conversion Rate in effect on each of such five Trading Days, with such calculation being made for each Trading Day; or



(2) in the case of a merger or consolidation described in
clause (iii) of the definition of Fundamental Change, at least 95% of the consideration, excluding cash payments for fractional shares and cash payments pursuant to dissenters approval rights, in the merger or consolidation constituting the
Fundamental Change, consists of common stock traded on a U.S. national securities exchange or quoted on the Nasdaq National Market (or which shall be so traded or quoted when issued or exchanged in connection with such Fundamental Change) and as



4



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a result of such transaction or transactions the Securities become convertible solely into such common stock.



Fundamental Change Purchase Date has the meaning set forth
in Section 5.1(a).



Fundamental Change Purchase
Notice has the meaning set forth in Section 5.1(c).



Fundamental Change Purchase Price has the meaning set forth in Section 5.1 (a).



Global Securities means Securities that are in substantially the form attached hereto as Exhibit A and that include the information
called for by footnotes 1 and 2 thereof and that are deposited with the Depositary or its custodian and registered in the name of, the Depositary or its nominee.



Holder means a person in whose name a Security is registered on the Registrars books.



Indebtedness means, with respect to any Person,



(a) all indebtedness, obligations and other
liabilities, contingent or otherwise:



| | (i) | for borrowed money, including obligations in respect of overdrafts and any loans or advances from banks, whether or not evidenced by notes or similar instruments, or
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | evidenced by credit or loan agreements, bonds, debentures, notes or similar instruments, whether or not the recourse of the lender is to the whole of such Persons assets or to
only a portion thereof, other than any account payable or other accrued current liability or obligation incurred in the ordinary course of business in connection with the obtaining of materials or services;
| | ---- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



(b) all reimbursement obligations and other liabilities,
contingent or otherwise, with respect to letters of credit, bank guarantees or bankers acceptances;



(c) all obligations and liabilities, contingent or otherwise, in respect of leases required, in conformity with generally accepted
accounting principles, to be accounted for as capitalized lease obligations on such Persons balance sheet;



(d) all obligations and other liabilities, contingent or otherwise, under any lease or related document, including a purchase agreement,
conditional sale or other title retention agreement, in connection with the lease of real property or improvements thereon (or any personal property included as part of any such lease) which provides that such Person is contractually obligated to
purchase or cause a third party to purchase the leased property or pay an agreed upon residual value of the leased property, including such Persons obligations under such lease or related document to purchase or cause a third party to purchase
such leased property or pay an agreed upon residual value of the leased property to the lessor;



(e) all obligations, contingent or otherwise, with respect to an interest rate, currency or other swap, cap, floor or collar agreement or
hedge agreement,



5



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forward contract or other similar instrument or agreement or foreign currency hedge, exchange, purchase or similar instrument or agreement;



(f) all direct or indirect guarantees or similar agreements
to purchase or otherwise acquire or otherwise assure a creditor against loss in respect of, Indebtedness, Obligations or liabilities of another Person or the kind described in clauses (a) through (e);



(g) any and all deferral, renewals, extensions, refinancings
and refundings of or amendment, modifications or supplements to any indebtedness, obligation or liability of the kinds described in clauses (a) through (f).



The amount of Indebtedness of any Person at any date shall be (i) the outstanding principal amount of all unconditional obligations described above, as
such amount would be reflected on a balance sheet prepared in accordance with United States generally accepted accounting principles, and the maximum liability at such date of such Person for any contingent obligations described above, (ii) the
accreted value thereof, in the case of any Indebtedness issued with original issue discount, and (iii) the principal amount thereof, together with any interest thereon that is more than 30 days past due, in the case of any other Indebtedness.



Indenture means this Indenture, as amended
or supplemented from time to time in accordance with the terms hereof, including the provisions of the TIA that are explicitly incorporated in this Indenture by reference to the TIA.



Lien means, with respect to any asset, any mortgage, lien, pledge, charge, security interest or
encumbrance of any kind in respect of such asset given to secure Indebtedness, whether or not filed, recorded or otherwise perfected under applicable law (including any conditional sale or other title retention agreement, any lease in the nature
thereof, any option or other agreement to sell or give a security interest in and any filing of or agreement to give any financing statement under the Uniform Commercial Code (or equivalent statutes) of any jurisdiction with respect to any such
lien, pledge, charge or security interest).



Interest
Payment Date has the meaning set forth in Exhibit A attached hereto.



Issue Date of any Security means the date on which such Security was originally issued or deemed issued as set forth on the face of the Security.



Legal Holiday means any day other than a Business Day.



Market Price means the average of the
Closing Sale Prices of one share of Applicable Stock for the 20-Trading Day period immediately preceding and including the Business Day immediately preceding the Purchase Date or Fundamental Change Purchase Date, as the case may be (or if the
Business Day immediately preceding the Purchase Date or Fundamental Change Purchase Date, as the case may be, is not a Trading Day, then on the last Trading Day immediately preceding the Business Day), appropriately adjusted to take into account the
occurrence, during the period commencing on the first of such Trading Days during such 20-Trading Day period and ending on the Purchase Date or Fundamental Change Purchase Date, as the case may be, of any event described in Section 12.3 or Section
12.4.



Non-Electing Share has the meaning
set forth in Section 12.4.



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Obligations means any principal, interest, penalties, fees, indemnifications,
reimbursements, damages and other liabilities payable under the documentation governing any Indebtedness.



Officer means the Chief Executive Officer, the President, the Chief Financial Officer, any Vice President, the Treasurer, or the
Secretary of the Company.



Officers
Certificate means a written certificate containing the information specified in Section 14.4 and Section 14.5, signed in the name of the Company by any two Officers, at least one of whom is the Chief Executive Officer or the Chief
Financial Officer, and delivered to the Trustee. An Officers Certificate given pursuant to Section 6.3 shall be signed by the Chief Financial Officer and one other Officer.



Opinion of Counsel means a written opinion containing the information specified in Section 14.4 and
Section 14.5, from legal counsel who is reasonably acceptable to the Trustee. The counsel may be an employee of, or counsel to, the Company.



Paying Agent has the meaning set forth in Section 2.3.



Payment Blockage Notice has the meaning set forth in Section 4.3(b).



Payment Blockage Period has the meaning set forth in
Section 4.3(b).



Person or
Persons means any individual, corporation, limited liability company, partnership, joint venture, association, joint-stock company, trust, unincorporated organization, or government or any agency or political subdivision thereof
(and for purposes of the definition of Fundamental Change shall also have the meaning set forth in such definition).



Principal Amount of a Security means the principal amount of the Security as set forth on the face of the Security.



Purchase Date has the meaning set forth in Section 4.1(a).



Purchase Notice has the meaning set forth
in Section 4.1(c).



Purchase Price has the
meaning set forth in Section 4.1(a).



QIB
means a qualified institutional buyer as defined in Rule 144A.



Record Date has the meaning set forth in Section 12.3(g).



Redemption Date means, when used with respect to any Security to be redeemed, the date fixed for redemption pursuant to this Indenture.



Redemption Price shall mean (i) with
respect to a Redemption Date occurring during the period commencing on February 18, 2009 to and including February 14, 2010, an amount equal to 101.143% of the Principal Amount of the Securities to be redeemed plus any accrued and unpaid interest
(including any Additional Interest) to, but excluding, the Redemption Date and (ii) with respect to a Redemption Date occurring on or after February 15, 2010, an amount equal to 100.571% of the Principal Amount of the Securities to be redeemed plus
any accrued and unpaid interest (including any Additional Interest) to, but excluding, the Redemption Date.



Reference Period has the meaning set forth in Section 12.3(d).



Registrar has the meaning set forth in Section 2.3.



Register has the meaning set forth in Section 2.3.



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Registration Rights Agreement means the Registration Rights Agreement, dated February
17, 2004, between the Company and Bear, Stearns & Co. Inc., as amended, modified or supplemented from time to time.



Regular Record Date has the meaning set forth in Exhibit A attached hereto.



Responsible Officer means (i) when used with respect to
the Trustee, the officer within the Corporate Finance Unit of the Corporate Trust Division of the Trustee (or any successor unit, department or division of the Trustee) located at the Corporate Trust Office of the Trustee, who has direct
responsibility for the administration of this Indenture and, for the purposes of Section 9.1(c)(ii) and the second sentence of Section 9.5 shall also include any officer of the Trustee to whom any corporate trust matter is referred because of such
persons knowledge of and familiarity with the particular subject and (ii) when used with respect to the Company, means the Chief Executive Officer, the President or the Chief Financial Officer.



Restricted Certificated Security means a Certificated
Security which is a Transfer Restricted Security.



Restricted Global Security means a Global Security that is a Transfer Restricted Security.



Restricted Security means a Restricted Certificated Security or a Restricted Global Security.



Rule 144A means Rule 144A under the Securities Act (or any
successor provision), as it may be amended from time to time.



SEC means the United States Securities and Exchange Commission, or any successor thereto.



Securities means any of the Companys 4.0% Convertible Subordinated Notes due 2011, as amended or supplemented from time to time,
issued under this Indenture.



Securities Act
means the United States Securities Act of 1933, as amended, or any successor statute thereto and the rules and regulations thereunder.



Senior Indebtedness means the principal of, premium, if any, interest, including all interest accruing after the commencement of any
bankruptcy or similar proceeding, whether or not a claim for post-petition interest is allowed as a claim in the proceeding, and rent payable on or in connection with, and all fees, costs, expenses and other amounts accrued, due or to become due, on
or in connection with Indebtedness of the Company outstanding on the date of this Indenture or thereafter created, incurred, assumed, guaranteed or in effect guaranteed by the Company, including all deferrals, renewals, extensions or refundings of,
or amendment, modifications or supplements to, the foregoing, unless in the case of any particular Indebtedness, the instrument creating or evidencing the same or the assumption or guarantee thereof expressly provides that such Indebtedness shall
not be senior in right of the Securities.



Notwithstanding the
foregoing, Senior Indebtedness does not include: (i) Indebtedness that expressly provides that such Indebtedness shall not be senior in right of payment to the Securities or expressly provides that such Indebtedness is on the same basis or junior to
the Securities and; (ii) any Indebtedness to any of the Companys majority-owned subsidiaries, other than Indebtedness to a Subsidiary arising by reason of guarantees by the Company of Indebtedness of such Subsidiary to a person that is not a
Subsidiary. Senior Indebtedness does



8



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not include any of the Companys obligations with respect to its outstanding 6.0% Convertible Subordinated Debentures due 2007.



Special Record Date has the meaning set forth in Exhibit A
attached hereto.



Spin-Off has the meaning
set forth in Section 12.3(d).



Stated
Maturity, when used with respect to any Security, means February 15, 2011.



Subsidiary means any person of which at least a majority of the outstanding Voting Stock shall at the time directly or indirectly be owned or controlled by the Company or by one or more Subsidiaries
or by the Company and one or more Subsidiaries.



TIA means the United States Trust Indenture Act of 1939 as in effect on the date of this Indenture, provided, however, that in the event the TIA is amended after such date, TIA means, to the extent required by any such
amendment, the TIA as so amended.



Trading
Day means a day during which trading in securities generally occurs on the Nasdaq National Market system or, if the Applicable Stock is not quoted on the Nasdaq National Market system, on the principal U.S. national or regional securities
exchange on which the Applicable Stock is then listed or, if the Applicable Stock is not listed on a U.S. national or regional securities exchange, and not quoted on the Nasdaq National Market system, on the principal other market on which the
Applicable Stock is then traded (provided that no day on which trading of the Applicable Stock is suspended on such exchange or other trading market will count as a Trading Day) (it being understood that for purposes of this definition a market
shall include obtaining quotations as provided in the last sentence of the definition of Closing Sales Price, if applicable).



Transfer Certificate has the meaning set forth in Section 2.12(f).



Transfer Restricted Security has the meaning set forth in Section 2.12(f).



Trigger Event has the meaning set forth in Section
12.3(d).



Trustee means the party named as
the Trustee in the first paragraph of this Indenture until a successor replaces it pursuant to the applicable provisions of this Indenture and, thereafter, shall mean such successor. The foregoing sentence shall likewise apply to any
such subsequent successor or successors.



Unrestricted
Certificated Security means a Certificated Security that is not a Transfer Restricted Security.



Unrestricted Global Security means a Global Security that is not a Transfer Restricted Security.



Voting Stock of a person means the Equity Interest of such
person of the class or classes pursuant to which the holders thereof have the general voting power under ordinary circumstances to elect at least a majority of the board of directors, managers or trustees of such person (irrespective of whether or
not at the time the Equity Interest of any other class or classes shall have or might have voting power by reason of the happening of any contingency).



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Section 1.2. Incorporation by Reference of Trust Indenture Act.



Whenever this Indenture refers to a provision of the TIA, the provision is
incorporated by reference in and made a part of this Indenture. The following TIA terms used in this Indenture have the following meanings:



Commission means the SEC.



Indenture Securities means the Securities.



Indenture Security Holder means a Holder.



Indenture to be Qualified means this Indenture.



Indenture Trustee or Institutional Trustee means the Trustee.



Obligor on the indenture securities means the Company.



All other TIA terms used but not defined in this Indenture
that are defined by the TIA, defined by TIA reference to another statute or defined by SEC rule have the meanings assigned to them by such definitions.



Section 1.3. Rules of Construction.



Unless the context otherwise requires:



(a) a term has the meaning assigned to it;



(b) an accounting term not otherwise defined has the meaning assigned to it in accordance with accounting principles generally accepted in
the United States as in effect from time to time;



(c) or is not exclusive;



(d) including means including, without limitation; and



(e) words in the singular include the plural, and words in the plural include the singular.



Section 1.4. Acts of Holders.



(a) Any request, demand, authorization, direction, notice, consent, waiver or other action provided by this Indenture to be given or taken
by the Holders may be embodied in and evidenced by one or more instruments of substantially similar tenor signed by such Holders in person or by an agent duly appointed in writing; and, except as herein otherwise expressly provided, such action
shall become effective when such instrument or instruments are delivered to the Trustee and, where it is hereby expressly required, to the Company, as described in Section 14.2. Such instrument or instruments (and the action embodied therein and
evidenced thereby) are herein sometimes referred to as the Act of the Holders signing such instrument or instruments. Proof of execution of any such instrument or of a writing appointing any such agent shall be sufficient for any purpose
of this Indenture and conclusive in favor of the Trustee and the Company, if made in the manner provided in this Section 1.4.



10



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(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 such officer the execution thereof. Where such execution is by a signer acting in a capacity other than such signers individual capacity, such certificate or affidavit shall also constitute sufficient proof of such signers authority,
if it so states. 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 deems sufficient.



(c) The principal amount and serial number of any Security
and the ownership of Securities shall be proved by the Register maintained by the Registrar for the Securities.



(d) 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.



(e) If the Company shall solicit from the Holders any request, demand, authorization, direction, notice, consent, waiver or other Act, the
Company may, at its option, by or pursuant to a Board Resolution, fix in advance a record date for the determination of Holders entitled to give such request, demand, authorization, direction, notice, consent, waiver or other Act, but the Company
shall have no obligation to do so. If such a record date is fixed, such request, demand, authorization, direction, notice, consent, waiver or other Act may be given before or after such record date, but only the Holders of record at the close of
business on such record date shall be deemed to be Holders for the purposes of determining whether Holders of the requisite proportion of outstanding Securities have authorized or agreed or consented to such request, demand, authorization,
direction, notice, consent, waiver or other Act, and for that purpose the outstanding Securities shall be computed as of such record date; provided that no such authorization, agreement or consent by the Holders on such record date shall be deemed
effective unless it shall become effective pursuant to the provisions of this Indenture not later than six months after the record date.



ARTICLE II



THE SECURITIES



Section 2.1. Form and Dating. (a) The Securities shall be designated as the 4.0% Convertible Subordinated Notes due 2011 of the Company. The aggregate principal amount of Securities outstanding at any time may not exceed
$120,000,000 except as provided in Section 2.7.



The Securities
and the Trustees certificate of authentication shall be substantially in the form of Exhibit A attached hereto, which is incorporated in and made a part of this Indenture.



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The Securities may have notations, legends or endorsements required by law, stock exchange rule or usage (provided that any such notation, legend or
endorsement required by usage is in a form acceptable to the Company). The Company shall provide any such notations, legends or endorsements to the Trustee in writing. Each Security shall be dated the date of its authentication.



(b) Restricted Global Securities. All of the
Securities are being offered and sold within the United States to QIBs in reliance on Rule 144A and shall be issued, initially in the form of one or more Restricted Global Securities, which shall be deposited with the Trustee at its Corporate Trust
Office, as custodian for and registered in the name of DTC or the nominee thereof, duly executed by the Company and authenticated by the Trustee as hereinafter provided. Subject to Section 2.1(a), the aggregate principal amount of the Restricted
Global Securities may from time to time be increased or decreased by adjustments made on the records of the Trustee and the Depositary as hereinafter provided.



(c) Global Securities in General. Each Global Security shall represent such of the outstanding Securities as shall be specified
therein and each shall provide that it shall initially represent the aggregate amount of outstanding Securities stated thereon, but that the aggregate amount of outstanding Securities represented thereby may from time to time be reduced or
increased, as appropriate, to reflect exchanges, redemptions, repurchases and conversions of such Securities.



Any adjustment of the aggregate principal amount of a Global Security to reflect the amount of any increase or decrease in the amount of outstanding
Securities represented thereby shall be made by the Trustee in accordance with instructions given by the Holder thereof as required by Section 2.12 and shall be made on the records of the Trustee and the Depositary.



Neither any members of, or participants in, the Depositary (collectively, the
Agent Members) nor any other persons on whose behalf Agent Members may act may exercise any rights under this Indenture with respect to any Global Security registered in the name of the Depositary or any nominee thereof, or under
any such Global Security, and the Depositary or such nominee, as the case may be, may be treated by the Company, the Trustee and any agent of the Company or the Trustee as the absolute owner and holder of such Global Security for all purposes
whatsoever. Notwithstanding the foregoing, nothing contained herein shall (A) 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 such nominee, as the case may be, or (B) impair, as between the Depositary, its Agent Members and any other person on whose behalf an Agent Member may act, the operation of customary practices of such Persons governing the exercise of
the rights of a holder of any Security.



(d)
Certificated Securities. Certificated Securities shall be issued only under the limited circumstances provided in Section 2.12(a)(i).



Section 2.2. Execution and Authentication.



The Securities shall be executed on behalf of the Company by any Officer. The signature of the Officer on the Securities may be manual or facsimile.



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A Security bearing the manual or facsimile signature of an individual who was at the time of the
execution of the Security an Officer shall bind the Company, notwithstanding that such individual has ceased to hold such office(s) prior to the authentication and delivery of such Securities or did not hold such office(s) at the date of
authentication of such Securities.



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 duly executed by the Trustee by manual
signature of an authorized signatory, and such certificate upon any Security shall be conclusive evidence, and the only evidence, that such Security has been duly authenticated and delivered hereunder.



The Trustee shall authenticate and deliver the Securities for original
issuance in an aggregate principal amount of up to $120,000,000 upon one or more Company Orders without any further action by the Company (other than as contemplated below and in Section 14.4 and Section 14.5). The aggregate principal amount due at
the Stated Maturity of the Securities outstanding at any time may not exceed the amount set forth in the foregoing sentence except as provided in Section 2.7. In authenticating such Securities, and accepting the additional responsibilities under
this Indenture in relation to such Securities, the Trustee shall receive and shall be fully protected in relying upon:



(a) a copy of the Board Resolution in or pursuant to which the terms and form of the Securities were established, the issuance and sale of
the Securities was authorized, this Indenture was authorized and specified Officers were authorized to establish the form and determine the terms of the Securities and the form of this Indenture, to execute the Securities and this Indenture on
behalf of the Company and to take any other necessary actions relating thereto and evidence of any actions taken by authorized Officers pursuant to that Board Resolution, certified by the Secretary, an Assistant Secretary or a Vice President of the
Company to have been duly adopted by the Board of Directors or taken by any authorized Officer and to be in full force and effect as of the date of such certificate; and



(b) an Officers Certificate delivered in accordance with Section 14.4 and Section 14.5.



(c) an Opinion of Counsel delivered in accordance with
Section 14.4 and Section 14.5.



The Trustee shall act as the
initial authenticating agent. Thereafter, the Trustee may appoint an authenticating agent acceptable to the Company to authenticate Securities. An authenticating agent may authenticate Securities whenever the Trustee may do so. Each reference in
this Indenture to authentication by the Trustee includes authentication by such agent.



The Securities shall be issued only in registered form without coupons and only in denominations of $1,000 of principal amount and any integral multiple of $1,000.



Section 2.3. Registrar, Paying Agent and Conversion Agent.



Pursuant to Section 6.5, the Company shall maintain an office or agency where
Securities may be presented for registration of transfer or for exchange (Registrar), an office or agency where Securities may be presented for redemption, repurchase or payment (Paying Agent), an office or
agency where Securities may be presented for conversion (Conversion Agent) and an



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office or agency where notices and demands to or upon the Company in respect of the Securities and this Indenture may be served. Pursuant to Section 6.5, the
Company shall at all times maintain a Registrar, Paying Agent, Conversion Agent and an office or agency where notices and demands to or upon the Company in respect of the Securities and this Indenture may be served in the Borough of Manhattan, New
York City. The Registrar shall keep a register of the Securities (the Register) and of their transfer and exchange.



The Company may have one or more co-registrars, one or more additional paying agents and one or more additional conversion agents. The term Paying Agent
includes any additional paying agent, including any named pursuant to Section 6.5. The term Conversion Agent includes any additional conversion agent, including any named pursuant to Section 6.5.



The Company shall enter into an appropriate limited agency agreement with any
Registrar, Paying Agent, Conversion Agent or co-registrar (in each case, if such Registrar, agent or co-registrar is a Person other than the Trustee). Each such agreement shall implement the provisions of this Indenture that relate to such agent.
The Company shall notify the Trustee of the name and address of any such agent. If the Company fails to maintain a Registrar or Paying Agent, the Trustee shall act as such and shall be entitled to appropriate compensation therefor pursuant to
Section 9.7. The Company or any Subsidiary or an Affiliate of either of them may act as Paying Agent, Registrar, Conversion Agent or co-registrar and, if the Company fails to maintain a Conversion Agent, the Company shall act as such.



The Company hereby initially appoints The Bank of New York as Registrar,
Paying Agent and Conversion Agent in connection with the Securities. The initial office of the Registrar, Paying Agent and Conversion Agent shall be the office of the Trustee that is located in the Borough of Manhattan, New York City, which office
on the date hereof is 101 Barclay Street, New York, New York 10286, Attention: Corporate Trust Division - Corporate Finance Unit.



Section 2.4. Paying Agent to Hold Assets in Trust.



Except as otherwise provided herein, prior to 10:00 a.m., New York City time, on each due date of payments in respect of any Security, the Company shall
deposit with the Paying Agent, cash (in immediately available funds if deposited on the due date), sufficient to make such payments when so becoming due. The Company shall require each Paying Agent (other than the Trustee) to agree in writing that
the Paying Agent shall hold in trust for the benefit of Holders or the Trustee all cash and Applicable Stock held by the Paying Agent for the making of payments in respect of the Securities and shall notify the Trustee of any default by the Company
in making any such payment. The Company at any time may require a Paying Agent to pay all cash held by it to the Trustee, and to account for any funds disbursed by it, and the Trustee may at any time during the continuance of any such default, upon
the written request to the Paying Agent, require such Paying Agent to forthwith pay to the Trustee all cash so held in trust. Upon doing so, the Paying Agent shall have no further liability for such cash.



Section 2.5. Holder Lists.



The Trustee shall preserve in as current a form as is reasonably practicable
the most recent list available to it of the names and addresses of Holders. If the Trustee is not the Registrar, the Company shall cause to be furnished to the Trustee on or before each semiannual interest payment date and at such other times as the
Trustee may request in writing a list in such



14



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form and as of such date as the Trustee may reasonably require of the names and addresses of Holders.



Section 2.6. Transfer and Exchange.



(a) Subject to compliance with any applicable additional
requirements contained in Section 2.12, when a Security is presented to the Registrar with a request to register a transfer thereof or to exchange such Security for an equal principal amount of Securities of other authorized denominations, the
Registrar shall register the transfer or make the exchange as requested; provided, however, that every Security presented or surrendered for registration of transfer or exchange shall be duly endorsed or accompanied by an assignment form and, if
applicable, a transfer certificate, each in the form included in Exhibit A attached hereto and in form satisfactory to the Registrar and each duly executed by the Holder thereof or its attorney duly authorized in writing. To permit registration of
transfers and exchanges, upon surrender of any Security for registration of transfer or exchange at an office or agency maintained for such purpose pursuant to Section 2.3, the Company shall execute, and the Trustee shall authenticate, Securities of
a like aggregate principal amount at the Registrars request. Any transfer or exchange shall be without charge, except that the Company or the Registrar may require payment of a sum sufficient to pay all taxes, assessments or other governmental
charges that may be imposed in connection with the transfer or exchange of the Securities from the Holder requesting such transfer or exchange.



Neither the Company, the Registrar nor the Trustee shall be required to exchange or register a transfer of (i) any Securities selected for redemption
(except, in the case of Securities to be redeemed in part, the portion thereof not to be redeemed), or (ii) any Securities in respect of which a Purchase Notice or a Fundamental Change Purchase Notice has been given and not withdrawn by the Holder
thereof in accordance with the terms of this Indenture (except, in the case of Securities to be repurchased in part, the portion thereof not to be repurchased), or (iii) any Securities surrendered for conversion (except, in the case of Securities to
be converted in part, the portion thereof not to be converted). All Securities issued upon any transfer or exchange of Securities in accordance with this Indenture shall be valid obligations of the Company, evidencing the same debt and entitled to
the same benefits under this Indenture, as the Securities surrendered upon such transfer or exchange.



(b) Any Registrar appointed pursuant to Section 2.3 shall provide to the Trustee such information as the Trustee may reasonably require in
connection with the delivery by such Registrar of Securities upon transfer or exchange of Securities.



(c) 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 Agent Members or other beneficial owners of interests in any Global Security) other than to
require delivery of such certificates and other documentation or evidence as are expressly required by, and to do so if and when 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 2.7. Replacement Securities.



If (a) any mutilated Security is surrendered to the Company, the Registrar or the Trustee, or (b) the Company, the Registrar
and the Trustee receive evidence to their satisfaction of the destruction, loss or theft of any Security, and there is delivered to the Company, the Registrar and the Trustee such security or indemnity as may be requested by them to save each of
them harmless, then, in the absence of notice to the Company, the Registrar or the Trustee that such Security has been acquired by a bona fide purchaser, the Company shall execute and upon its written request the Trustee shall authenticate and
deliver, in exchange for any such mutilated Security or in lieu of any such destroyed, lost or stolen Security, a new Security of like tenor and principal amount, bearing a certificate 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 is about to be redeemed by the Company pursuant to Article III or repurchased by the Company pursuant to Article V, the Company in its discretion may, instead of issuing a new Security, pay, redeem or
repurchase such Security, as the case may be.



Upon the
issuance of any new Securities under this Section 2.7, the Company may require the payment of a sum sufficient to cover any tax, assessment or other governmental charge that may be imposed in relation thereto and any other expenses (including the
fees and expenses of the Trustee or the Registrar) connected therewith.



Every new Security issued pursuant to this Section 2.7 in lieu of any mutilated, 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 benefits of this Indenture equally and proportionately with any and all other Securities duly issued hereunder.



The provisions of this Section 2.7 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 2.8. Outstanding Securities; Determinations of Holders Action.



Securities outstanding at any time are all the Securities authenticated by the Trustee, except for:



(a) those cancelled by it,



(b) those paid, redeemed or repurchased pursuant to Section
2.7,



(c) those delivered to it for
cancellation, and



(d) those described in this
Section 2.8 as not outstanding.



A Security does not cease to
be outstanding because the Company or an Affiliate thereof holds the Security; provided, however, that in determining whether the Holders of the requisite principal amount of Securities have given or concurred in any request, demand, authorization,
direction, notice, consent, waiver, or other Act hereunder, Securities owned by the Company or any other obligor upon the Securities or any Affiliate of the Company or such other obligor shall be disregarded and deemed not to be outstanding, except
that, in determining whether the Trustee



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shall be protected in relying upon any such request, demand, authorization, direction, notice, consent, waiver or other Act, only Securities which a
Responsible Officer of the Trustee actually knows to be so owned shall be so disregarded. Subject to the foregoing, only Securities outstanding at the time of such determination shall be considered in any such determination.



If a Security is replaced pursuant to Section 2.7, the replaced Security
ceases to be outstanding unless the Trustee receives proof satisfactory to it that the replaced Security is held by a bona fide purchaser unaware that such Security has been replaced.



If the Paying Agent holds, in accordance with the terms of this Indenture, prior to 10:00 a.m., New York City time, on a
Redemption Date, a Purchase Date, a Fundamental Change Purchase Date or Stated Maturity, as the case may be, cash or securities, if permitted hereunder, sufficient to pay Securities payable on that date, then on such Redemption Date, Purchase Date,
Fundamental Change Purchase Date or Stated Maturity, as the case may be, such Securities shall cease to be outstanding and interest and Additional Interest, if any, on such Securities shall cease to accrue.



If a Security is converted in accordance with Article XII, then from and
after the time of conversion on the date of conversion, such Security shall cease to be outstanding and interest and Additional Interest, if any, on such Security shall cease to accrue.



Section 2.9. 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 conclusively evidenced by their execution of such Securities.



If temporary Securities are issued, the Company shall 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 the office or agency of the Company designated for such purpose pursuant to
Section 2.3, 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 and subject to the same limitations under this Indenture as definitive Securities.



Section 2.10. Cancellation.



All Securities surrendered for payment, repurchase by the Company pursuant to
Article V, conversion, redemption or registration of transfer or exchange shall, if surrendered to any person other than the Trustee, be delivered to the Trustee and shall be promptly cancelled by it or, if surrendered to the Trustee, shall be
promptly cancelled by it. The Company may at any time deliver to the Trustee for cancellation any Securities previously authenticated and delivered hereunder which the Company may have acquired in any manner whatsoever, and all Securities so
delivered shall be promptly cancelled by the Trustee. The Company may not issue new



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Securities to replace Securities it has paid or delivered to the Trustee for cancellation or that any Holder has converted pursuant to Article XII. No
Securities shall be authenticated in lieu of or in exchange for any Securities cancelled as provided in this Section 2.10, except as expressly permitted by this Indenture. All cancelled Securities held by the Trustee shall be disposed of by the
Trustee in accordance with the Trustees customary procedure.



Section
2.11. Persons Deemed Owners.



Prior to due presentment
of a Security for registration of transfer, the Company, the Trustee, any Paying Agent and any agent of the Company, the Trustee or the Paying Agent may treat the person in whose name such Security is registered as the owner of such Security for the
purpose of receiving payment of principal of, Redemption Price, Purchase Price or Fundamental Change Purchase Price, and interest and Additional Interest, if any, on, the Security, for the purpose of receiving cash or Applicable Stock upon
conversion 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.



Section 2.12. Additional Transfer and Exchange Requirements.



(a) Transfer and Exchange of Global Securities.



| | (i) | Certificated Securities shall be issued in exchange for interests in the Global Securities only if (x) the Depositary notifies the Company that it is unwilling or
unable to continue as Depositary for the Global Securities, (y) the Depositary ceases to be a clearing agency registered under the Exchange Act, if so required by applicable law or regulation and a successor Depositary is not appointed
by the Company within 90 calendar days, or (z) an Event of Default has occurred and is continuing and the Registrar has received a request from the Depositary requesting such exchange. In either case, the Company shall execute, and the Trustee
shall, upon receipt of a Company Order (which the Company agrees to deliver promptly), authenticate and deliver Certificated Securities in an aggregate principal amount equal to the principal amount of such Global Securities in exchange therefor.
Only Restricted Certificated Securities shall be issued in exchange for beneficial interests in Restricted Global Securities, and only Unrestricted Certificated Securities shall be issued in exchange for beneficial interests in Unrestricted Global
Securities. Certificated Securities issued in exchange for beneficial interests in Global Securities shall be registered in such names and shall be in such authorized denominations as the Depositary, pursuant to instructions from its direct or
indirect participants or otherwise, shall instruct the Trustee. The Trustee shall deliver or cause to be delivered such Certificated Securities to the Persons in
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| | whose name such Securities are so registered. Such exchange shall be effected in accordance with the Applicable Procedures.
| | ---------------------------------------------------------------------------------------------------------------------------



| | (ii) | Notwithstanding any other provisions of this Indenture other than the provisions set forth in Section 2.12(a)(i), a Global Security may not be transferred except as a whole by the
Depositary to a nominee of the Depositary or by a nominee of the Depositary to the Depositary or another nominee of the Depositary or by the Depositary or any such nominee to a successor Depositary or a nominee of such successor Depositary.
| | ---- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



(b) Transfer and Exchange of
Certificated Securities. In the event that Certificated Securities are issued in exchange for beneficial interests in Global Securities in accordance with Section 2.12(a)(i), and, on or after such event, Certificated Securities are presented by
a Holder to the Registrar with a request:



(x) to register the transfer of the Certificated Securities to a person who shall take delivery thereof in the form of Certificated Securities only; or



(y) to exchange such Certificated Securities for an equal principal amount of Certificated Securities of
other authorized denominations,



such Registrar shall register
the transfer or make the exchange as requested; provided, however, that the Certificated Securities presented or surrendered for register of transfer or exchange:



| | (i) | shall be duly endorsed or accompanied by a written instrument of transfer in accordance with the proviso to the first paragraph of Section 2.6; and
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | in the case of a Restricted Certificated Security, such request shall be accompanied by the following additional information and documents, as applicable:
| | ---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------



| | (A) | if such Restricted Certificated Security is being delivered to the Registrar by a Holder for registration in the name of such Holder, without transfer, or such Restricted
Certificated Security is being transferred to the Company or a Subsidiary of the Company, a certification to that effect from such Holder (in substantially the form set forth in the Transfer Certificate); or
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (B) | if such Restricted Certificated Security is being transferred to a person the Holder reasonably believes is a QIB in accordance with Rule 144A or pursuant to an
effective registration statement under
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| | the Securities Act, a certification to that effect from such Holder (in substantially the form set forth in the Transfer Certificate).
| | --------------------------------------------------------------------------------------------------------------------------------------



(c) Transfer of a
Beneficial Interests in a Restricted Global Security for a Beneficial Interest in an Unrestricted Global Security. Any person having a beneficial interest in a Restricted Global Security may upon request, subject to the Applicable Procedures,
transfer such beneficial interest to a person who is required or permitted to take delivery thereof in the form of an Unrestricted Global Security. Upon receipt by the Trustee of written instructions, or such other form of instructions as is
customary for the Depositary, from the Depositary or its nominee on behalf of any person having a beneficial interest in a Restricted Global Security and the following additional information and documents in such form as is customary for the
Depositary from the Depositary or its nominee on behalf of the person having such beneficial interest in the Restricted Global Security (all of which may be submitted by facsimile or electronically):



| | (i) | if such beneficial interest is being transferred pursuant to an effective registration statement under the Securities Act, a certification to that effect from the Holder (in
substantially the form set forth in the Transfer Certificate); or
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | if such beneficial interest is being transferred pursuant to an exemption from the registration requirements of the Securities Act in accordance with Rule 144, a certification to
that effect from the Holder (in substantially the form set forth in the Transfer Certificate) and, if the Company or the Trustee so requests, a customary Opinion of Counsel.
| | ---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



The Trustee, as the Registrar, shall reduce or cause to be reduced the
aggregate principal amount of the Restricted Global Security by the appropriate principal amount and shall increase or cause to be increased the aggregate principal amount of the Unrestricted Global Security by a like principal amount. Such transfer
shall otherwise be effected in accordance with the Applicable Procedures. If no Unrestricted Global Security is then outstanding, the Company shall execute and the Trustee shall, upon receipt of a Company Order (which the Company agrees to deliver
promptly), authenticate and deliver an Unrestricted Global Security.



(d) Transfers of Certificated Securities for Beneficial Interest in Global Securities. In the event that Certificated Securities are issued in exchange for beneficial interests in Global Securities and,
thereafter, the events or conditions specified in Section 2.12(a)(i) which required such exchange shall cease to exist, the Company shall mail notice to the Trustee and to the Holders stating that Holders may exchange Certificated Securities or
interests in Global Securities by complying with the procedures set forth in this Indenture and briefly describing such procedures and the events or circumstances requiring



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that such notice be given. Thereafter, if Certificated Securities are presented by a Holder to a Registrar with a request:



(x) to register the transfer of such Certificated
Securities to a person who shall take delivery thereof in the form of a beneficial interest in a Global Security, which request shall specify whether such Global Security shall be a Restricted Global Security or an Unrestricted Global Security, or



(y) to exchange such Certificated Securities
for an equal principal amount of beneficial interests in a Global Security, which beneficial interests shall be owned by the Holder transferring such Certificated Securities (provided that in the case of such an exchange, Restricted Certificated
Securities may be exchanged only for Restricted Global Securities and Unrestricted Certificated Securities may be exchanged only for Unrestricted Global Securities), the Registrar shall register the transfer or make the exchange as requested by
canceling such Certificated Security and causing, or directing the Registrar to cause, the aggregate principal amount of the applicable Global Security to be increased accordingly and, if no such Global Security is then outstanding, the Company
shall issue and the Trustee shall, upon receipt of a Company Order (which the Company agrees to deliver promptly) authenticate and deliver a new Global Security; provided, however, that the Certificated Securities presented or surrendered for
registration of transfer or exchange:



| | (1) | shall be duly endorsed or accompanied by a written instrument of transfer in accordance with the proviso to the first paragraph of Section 2.6;
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------



| | (2) | in the case of a Restricted Certificated Security to be transferred for a beneficial interest in an Unrestricted Global Security, such request shall be accompanied by the following
additional information and documents, as applicable:
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (i) | if such Restricted Certificated Security is being transferred pursuant to an effective registration statement under the Securities Act, a certification to that effect from such
Holder (in substantially the form set forth in the Transfer Certificate); or
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | if such Restricted Certificated Security is being transferred pursuant to an exemption from the registration requirements of the Securities Act in accordance with Rule 144, a
certification to that effect from such Holder (in substantially the form set forth in the Transfer Certificate) and, if the Company or the Registrar so requests, a customary Opinion of Counsel;
| | ---- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



21



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| | (3) | in the case of a Restricted Certificated Security to be transferred or exchanged for a beneficial interest in a Restricted Global Security, such request shall be accompanied by a
certification from such Holder (in substantially the form set forth in the Transfer Certificate) to the effect that such Restricted Certificated Security is being transferred to a person the Holder reasonably believes is a QIB (which, in the case of
an exchange, shall be such Holder) in accordance with Rule 144A.
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (4) | in the case of an Unrestricted Certificated Security to be transferred or exchanged for a beneficial interest in a Restricted Global Security, such request shall be accompanied by a
certification from such Holder (in substantially, the form set forth in the Transfer Certificate) to the effect that such Unrestricted Certificated Security is being transferred to a person the Holder reasonably believes is a QIB (which, in the case
of an exchange, shall be such Holder) in accordance with Rule 144A.
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



(e) Legends.



| | (1) | Except as permitted by the following paragraphs (2), (3) and (4), each Global Security and Certificated Security (and all Securities issued in exchange therefor or upon registration
of transfer or replacement thereof) shall bear a legend in substantially the form called for by footnote 2 to Exhibit A and footnote 1 to Exhibit B attached hereto (each a Transfer Restricted Security), for so long as it is
required by this Indenture to bear such legend. Each Transfer Restricted Security shall have attached thereto a certificate (a Transfer Certificate) in substantially the form called for by footnote 3 to Exhibit A attached hereto.
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (2) | Upon any sale or transfer of a Transfer Restricted Security (x) after the expiration of the holding period applicable to sales of the Securities under Rule 144(k) of the Securities
Act, (y) pursuant to Rule 144 or (z) pursuant to an effective registration statement under the Securities Act:
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (i) | in the case of any Restricted Certificated Security, any Registrar shall permit the Holder thereof to exchange such Restricted Certificated Security for an
Unrestricted Certificated Security, or (under the circumstances described in Section 2.12(e)) to transfer such Restricted Certificated Security to a transferee who shall take such Security in the form
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| | of a beneficial interest in an Unrestricted Global Security, and in each case shall rescind any restriction on the transfer of such Security; provided,
however, that the Holder of such Restricted Certificated Security shall, in connection with such exchange or transfer, comply with the other applicable provisions of this Section 2.12; and
| | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | in the case of any beneficial interest in a Restricted Global Security, the Trustee shall permit the beneficial owner thereof to transfer such beneficial interest to a transferee
who shall take such interest in the form of a beneficial interest in an Unrestricted Global Security and shall rescind any restriction on transfer of such beneficial interest; provided, that such Unrestricted Global Security shall continue to be
subject to the provisions of Section 2.12(a)(ii); and provided, further, that the owner of such beneficial interest shall, in connection with such transfer, comply with the other applicable provisions of this Section 2.12.
| | ---- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (3) | Upon the exchange, registration of transfer or replacement of Securities not bearing the legend described in paragraph (1) above, the Company shall execute, and the Trustee upon
receipt of a Company Request shall authenticate and deliver Securities that do not bear such legend and that do not have a Transfer Certificate attached thereto.
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (4) | After the expiration of the holding period pursuant to Rule 144(k) of the Securities Act, the Company shall remove any restriction of transfer on such Security, and the Company
shall execute, and the Trustee upon receipt of a Company Request shall authenticate and deliver Securities that do not bear such legend and that do not have a Transfer Certificate attached thereto.
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (5) | Until the expiration of the holding period applicable to sales of the Securities under Rule 144(k) of the Securities Act or a transfer pursuant to Rule 144 or pursuant to an
effective registration statement under the Securities Act, the Applicable Stock issued upon conversion of the Securities shall bear the legend in substantially the form called for by Exhibit B attached hereto.
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



(f) Transfers to the Company. Nothing contained in
this Indenture or in the Securities shall prohibit the sale or other transfer of any Securities (including



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beneficial interests in Global Securities) to the Company or any of its Subsidiaries. The Company shall ensure that if any such securities shall be reissued,
such reissuance shall comply with applicable law and any securities reissued as Transfer Restricted Securities shall be assigned a different CUSIP number than any other securities.



(g) Amendments to Rule 144(k). Notwithstanding any
other provision in this Indenture, if Rule 144(k) as promulgated under the Securities Act is amended to shorten the two-year period under Rule 144(k), then the references to two years in the restrictive legend of each Transfer Restricted
Security and footnote one to Exhibit A shall be deemed to refer to such shorter period, from and after receipt by the Trustee of the documents described in Section 2.12(e)(2) from the Company or from a Holder of a Transfer Restricted Security;
provided that, a Transfer Restricted Security shall not be deemed to refer to such shorter period if to do so would be prohibited by, or would otherwise cause a violation of, the U.S. federal securities laws applicable at the time. As soon as
practicable after a Responsible Officer of the Company receives notice of the effectiveness of any such amendment to shorten the two-year period under Rule 144(k), unless causing the Transfer Restricted Securities to refer to such shorter period
would otherwise be prohibited by, or would otherwise cause a violation of, the U.S. federal securities laws applicable at the time, the Company will provide to the Trustee the documents described in Section 2.12(e)(2) respecting the effectiveness of
such amendment.



|Section | 2.13. CUSIP Numbers.
|------- | --------------------



The Company may issue the Securities with one or more CUSIP numbers (if then generally in use), and, if so, the Trustee shall use
CUSIP numbers in notices of redemption or repurchase 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 or repurchase and that reliance may be placed only on the other identification numbers printed on the Securities, and any such redemption or repurchase shall not be affected by any defect in or omission of
such numbers. The Company shall promptly notify the Trustee of any change in the CUSIP numbers.



|Section | 2.14. Ranking.
|------- | --------------



The Company agrees, and each holder of Securities by accepting the same agrees, that the indebtedness of the Company arising under or in connection with
this Indenture and every outstanding Security issued under this Indenture from time to time constitutes and shall constitute a subordinate unsecured general obligation of the Company. The Securities will be subordinated in right of payment to all
other existing and future Senior Indebtedness of the Company as provided in Section 4.1 hereof. Notwithstanding the foregoing, nothing in this Section 2.14 shall impair the claims of, or payments to, the Trustee under or pursuant to Sections 8.10
and 9.07, and the Trustees rights to compensation, indemnification and reimbursement of expenses under Sections 8.10 and 9.07 are not subordinated.



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ARTICLE III



REDEMPTION



Section 3.1. The Companys Right to Redeem; Notice to Trustee.



Prior to February 18, 2009, the Securities shall not be redeemable at the Companys option. On or after February 18, 2009, the Company, at its
option, may redeem the Securities in accordance with this Article III for cash at any time as a whole, or from time to time in part, at the Redemption Price.



In the event that the Company elects to redeem the Securities on a date that is after any Regular Record Date but on or before the corresponding Interest
Payment Date, the Company shall be required to pay any accrued and unpaid interest and Additional Interest, if any, to the holder of the redeemed Security and not the Holder on the corresponding Regular Record Date.



If the Company elects to redeem Securities, it shall notify the Trustee in
writing of the Redemption Date, the principal amount of Securities to be redeemed and the Redemption Price. The Company shall give this notice to the Trustee by a Company Order at least 30 days before the Redemption Date (unless a shorter notice
shall be satisfactory to the Trustee).



Section 3.2. Selection of Securities
to Be Redeemed.



If fewer than all of the outstanding
Securities are to be redeemed, unless the procedures of the Depositary provide otherwise, the Trustee shall select the Securities to be redeemed by lot or on a pro rata basis or by another method the Trustee, in its discretion, considers fair and
appropriate. The Trustee shall make the selection within five Business Days after it receives the notice provided for in Section 3.1 from outstanding Securities not previously called for redemption.



Securities and portions of Securities that the Trustee selects shall be in
principal amounts of $1,000 or an integral multiple of $1,000. Provisions of this Indenture that apply to Securities called for redemption also apply to portions of Securities called for redemption. The Trustee shall notify the Company promptly of
the Securities or portions of the Securities to be redeemed.



Securities and portions of Securities that are to be redeemed are convertible by the Holder until 5:00 p.m., New York City time, on the second Business Day immediately preceding the Redemption Date. 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 3.3. Notice of Redemption.



At least 20 calendar days but not more than 60 calendar 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 of redemption shall identify the Securities to be redeemed and shall state:



(a) the Redemption Date;



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(b) the Redemption Price;



(c) the Conversion Rate and any adjustments thereto;



(d) the name and address of the Paying Agent and Conversion
Agent;



(e) that Securities called for
redemption may be converted at any time prior to 5:00 p.m., New York City time, on the second Business Day preceding the Redemption Date;



(f) that Holders who want to convert their Securities must satisfy the requirements set forth in Article XII;



(g) that Securities called for redemption must be
surrendered to the Paying Agent to collect the Redemption Price;



(h) if fewer than all of the outstanding Securities are to be redeemed, the serial numbers, if any, and principal amounts of the particular Securities to be redeemed;



(i) that, unless the Company defaults in making payment of
such Redemption Price, interest and Additional Interest, if any, on Securities called for redemption shall cease to accrue on and after the Redemption Date;



(j) the CUSIP number(s) of the Securities; and



(k) any other information the Company wants to present.



At the Companys request, the Trustee shall give the notice of redemption in the Companys name and at the
Companys expense; provided, however, that the Company makes such request at least five Business Days (unless a shorter period shall be satisfactory to the Trustee) prior to the date by which such notice of redemption must be given to Holders
in accordance with this Section 3.3; provided, further, that the text of the notice of redemption shall be prepared by the Company.



Section 3.4. 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, 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.



Section 3.5. Deposit of Redemption Price.



Prior to 10:00 a.m., New York City time, on the applicable 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 acting as the Paying Agent, shall segregate and hold in trust as provided in Section 2.4) an amount of cash (in immediately available funds if deposited on the Redemption



26



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Date) sufficient to pay the aggregate Redemption Price of all Securities or portions thereof which are to be redeemed as of such Redemption 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.



If the Paying Agent holds, in accordance with the terms hereof, at 10:00 a.m., New York City time, on the applicable
Redemption Date, cash sufficient to pay the Redemption Price of any Securities for which notice of redemption is given, then, on such Redemption Date, such Securities shall cease to be outstanding and interest and Additional Interest, if any, on
such Securities shall cease to accrue, whether or not such Securities are delivered to the Paying Agent, and the rights of the Holders in respect thereof shall terminate (other than the right to receive the Redemption Price upon delivery of such
Securities).



Section 3.6. Securities Redeemed in Part.



Any Certificated Security which is to be redeemed only in part shall be
surrendered at the office of the Paying Agent and the Company shall execute and the Trustee shall authenticate and deliver to the Holder of such Security, without charge, a new Security or Securities, of any authorized denomination as requested by
such Holder in aggregate principal amount equal to the unredeemed portion of the Security surrendered.



Section 3.7. Repayment to the Company.



To the extent that the aggregate amount of cash deposited by the Company pursuant to Section 3.5 exceeds the aggregate Redemption Price of the Securities or portions thereof which the Company is redeeming as of the
Redemption Date, then, promptly after the Redemption Date, the Paying Agent shall return any such excess to the Company together with interest, if any, thereon.



Section 3.8. No Sinking Fund.



The Securities shall not have a sinking fund.



ARTICLE IV



SUBORDINATION



Section 4.1. Agreement of Subordination.



The
Company agrees, and each holder of Securities by accepting the same agrees, that the Indebtedness evidenced by the Securities is subordinated in right of payment (to the extent and in the manner provided in this Article IV) to the prior payment in
full in cash or payment satisfactory to holders of Senior Indebtedness of all Senior Indebtedness (whether outstanding on the date hereof or hereafter created, incurred or assumed), and that the subordination is for the benefit of the holders of
Senior Indebtedness.



Section 4.2. Liquidation; Dissolution; Bankruptcy.



Upon any distribution to creditors of the Company in a
liquidation or dissolution of the Company or in a bankruptcy, reorganization, insolvency, receivership or similar proceeding



27



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relating to the Company or its property, in an assignment for the benefit of creditors or any marshaling of the Companys assets and liabilities:



(a) holders of Senior Indebtedness shall be
entitled to receive payment in full of all Obligations due in respect of such Senior Indebtedness (including interest after the commencement of any such proceeding at the rate specified in the applicable Senior Indebtedness) in cash or other payment
satisfactory to the holders of the Senior Indebtedness before holders of the Securities shall be entitled to receive any payment with respect to the Securities; and



(b) until all Senior Indebtedness is paid in full in cash or other payment satisfactory to the holders of
the Senior Indebtedness, any distribution to which holders of the Securities would be entitled but for this Article IV shall be made to holders of Senior Indebtedness, as their interests may appear.



Section 4.3. Default on Designated Senior Indebtedness.



Anything in this Indenture to the contrary notwithstanding, no payment of
Principal Amount, plus any accrued and unpaid interest (including any Additional Interest) on or other amounts due on the Securities, and no redemption, repurchase or other acquisition of the Securities, shall be made by or on behalf of the Company
unless:



(a) full payment of all amounts then
due for principal of and interest on, and of all other amounts then due on, all Designated Senior Indebtedness has been made or duly provided for pursuant to the terms of the instruments governing such Designated Senior Indebtedness; and



(b) at the time for, and immediately after giving effect
to, any such payment, redemption, repurchase or other acquisition, there shall not exist under any Designated Senior Indebtedness, or any agreement pursuant to which any Designated Senior Indebtedness is issued, any default which shall not have been
cured or waived and which default shall have resulted in the full amount of such Designated Senior Indebtedness being declared due and payable.



In addition, if a Responsible Officer of the Trustee at the Corporate Trust Office shall receive written notice from the holders of Designated Senior
Indebtedness or their representative (a Payment Blockage Notice) that there has occurred and is continuing under such Designated Senior Indebtedness, or any agreement pursuant to which such Designated Senior Indebtedness is
issued, any non-payment default, which default shall not have been cured or waived, giving the holders of such Designated Senior Indebtedness the right to declare such Designated Senior Indebtedness immediately due and payable, then, anything in
this Indenture to the contrary notwithstanding, no payment of Principal Amount, plus any accrued and unpaid interest (including any Additional Interest) on, or any other amounts due on the Securities, and no redemption, repurchase or other
acquisition of the Securities, shall be made by or on behalf of the Company during the period (the Payment Blockage Period) commencing on the date of receipt of the Payment Blockage Notice and ending on the earliest of (i) the
date on which such default shall have been cured or waived, (ii) 179 days from the receipt of the Payment Blockage Notice and (iii) the date the Payment Blockage Notice is withdrawn by the holders of such



28



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Designated Senior Indebtedness. Notwithstanding the provisions described in the immediately preceding sentence (but subject to the provisions contained in
Section 4.2 and the first sentence of this Section 4.3), unless the holders of such Designated Senior Indebtedness or the representative of such holders shall have accelerated the maturity of such Designated Senior Indebtedness, the Company may
resume payments on the Securities after the end of such Payment Blockage Period. Not more than one Payment Blockage Notice may be given in any consecutive 365-day period, irrespective of the number of defaults with respect to one or more issues of
Designated Senior Indebtedness during such period.



Section 4.4.
Acceleration of Convertible Subordinated Notes.



In the
event of the acceleration of the Securities because of an Event of Default, the Company may not make any payment or distribution to the Trustee or any holder of Securities in respect of Obligations with respect to the Securities and may not acquire
or purchase from the Trustee or any holder of Securities any Securities until all Senior Indebtedness has been paid in full in cash or other payment satisfactory to the holders of Senior Indebtedness or such acceleration is rescinded in accordance
with the terms of this Indenture.



If payment of the Securities
is accelerated because of an Event of Default, the Company shall promptly notify holders of Senior Indebtedness or trustees of such Senior Indebtedness of the acceleration.



Section 4.5. When Distribution Must Be Paid Over.



In the event that the Trustee, any holder of Securities or any other person receives any payment or distributions of assets
of the Company of any kind with respect to the Securities in contravention of any subordination terms contained in this Indenture, whether in cash, property or securities, including, without limitation, by way of set-off or otherwise, then such
payment shall be held by the recipient in trust for the benefit of holders of Senior Indebtedness, and shall be immediately paid over and delivered to the holders of Senior Indebtedness or their representative, to the extent necessary to make
payment in full of all Senior Indebtedness remaining unpaid, after giving effect to any concurrent payment or distribution or provision therefor, to or for the holders of Senior Indebtedness; provided, however, that the foregoing shall apply to the
Trustee only if a Responsible Officer of the Trustee has actual knowledge (as determined in accordance with Section 4.11) that such payment or distribution is prohibited by this Indenture.



With respect to the holders of Senior Indebtedness, the Trustee undertakes to
perform only such obligations on the part of the Trustee as are specifically set forth in this Article IV, and no implied covenants or obligations with respect to the holders of Senior Indebtedness shall be read into this Indenture against the
Trustee. The Trustee shall not be deemed to owe any fiduciary duty to the holders of Senior Indebtedness, and shall not be liable to any such holders if the Trustee shall in good faith mistakenly pay over or distribute to or on behalf of holders of
Securities or the Company or any other person money or assets to which any holders of Senior Indebtedness shall be entitled by virtue of this Article IV.



Section 4.6. Subordination Notice by Company.



The Company shall promptly notify the Trustee in writing of any facts known to the Company that would cause a payment of any Obligations with respect to
the Securities or the



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purchase of any Securities by the Company to violate this Article IV, but failure to give such notice shall not affect the subordination of the Securities to
the Senior Indebtedness as provided in this Article IV.



Notwithstanding the provisions of this or any other provision of this Indenture, the Trustee shall not be charged with knowledge of the existence of any facts which would prohibit the making of any payment to or by the Trustee in respect of
the Securities, unless and until a Responsible Officer of the Trustee shall have received written notice at the Corporate Trust Office from the Company or a holder of Senior Indebtedness or from any trustee or agent therefor; and, prior to the
receipt of any such written notice, the Trustee shall be entitled in all respects to assume that no such facts exist; provided, however, that if a Responsible Officer of the Trustee shall not have received, at least three Business Days prior to the
date upon which by the terms hereof any such money may become payable for any purpose, the notice with respect to such money provided for in this Section 4.6, then, anything herein contained to the contrary notwithstanding, the Trustee shall have
full power and authority to receive such money and to apply the same to the purpose for which such money was received and shall not be affected by any notice to the contrary which may be received by it within three Business Days prior to such date.



The Trustee shall be entitled to conclusively rely on the
delivery to it of a written notice by a person representing himself to be a holder of Senior Indebtedness (or a trustee or agent on behalf of such holder) to establish that such notice has been given by a holder of Senior Indebtedness (or a trustee
or agent on behalf of any such holder). In the event that the Trustee determines in good faith that further evidence is required with respect to the right of any person as a holder of Senior Indebtedness to participate in any payment or distribution
pursuant to this Article, the Trustee may request such person to furnish evidence to the reasonable satisfaction of the Trustee as to the amount of Senior Indebtedness held by such person, the extent to which such person is entitled to participate
in such payment or distribution and any other facts pertinent to the rights of such person under this Article, and if such evidence is not furnished, the Trustee may defer any payment which it may be required to make for the benefit of such person
pursuant to the terms of this Indenture pending judicial determination as to the rights of such person to receive such payment.



Section 4.7. Subrogation.



After all Senior Indebtedness is paid in full and until the Securities are paid in full, holders of Securities shall be subrogated (equally and ratably
with all other indebtedness pari passu with the Securities) to the rights of holders of Senior Indebtedness to receive distributions applicable to Senior Indebtedness to the extent that distributions otherwise payable to the holders of Securities
have been applied to the payment of Senior Indebtedness. A distribution made under this Article IV to holders of Senior Indebtedness that otherwise would have been made to holders of Securities is not, as between the Company and holders of
Securities, a payment by the Company on the Securities.



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Section 4.8. Relative Rights.



This Article IV defines the relative rights of holders of Securities and holders of Senior Indebtedness. Nothing in this
Indenture shall:



(a) impair, as between the
Company and holders of Securities, the obligation of the Company, which is absolute and unconditional, to pay the Principal Amount and interest (including any Additional Interest) on the Securities in accordance with their terms;



(b) affect the relative rights of holders of Securities and
creditors (other than with respect to Senior Indebtedness) of the Company, other than their rights in relation to holders of Senior Indebtedness; or



(c) prevent the Trustee or any holder of Securities from exercising its available remedies upon a Default or Event of Default, subject to
the rights of holders and owners of Senior Indebtedness to receive distributions and payments otherwise payable to holders of Securities.



If the Company fails because of this Article IV to pay the Principal Amount, plus any accrued and unpaid interest (including any Additional Interest) on a
Security on the due date, the failure is still a Default or Event of Default.



Section 4.9. Subordination May Not Be Impaired by Company.



No right of any holder of Senior Indebtedness to enforce the subordination of the indebtedness evidenced by the Securities shall be impaired by any act or failure to act by the Company or any holder of Securities or
by the failure of the Company or any such holder to comply with this Indenture.



Section 4.10. Distribution or Notice to Representative.



Whenever a distribution is to be made or a notice given to holders of Senior Indebtedness, the distribution may be made and the notice given to their representative.



Upon any payment or distribution of assets of the Company referred to in this Article IV, the Trustee and the holders of
Securities shall be entitled to rely upon any order or decree made by any court of competent jurisdiction or upon any certificate of such representative or of the liquidating trustee or agent or other person making any distribution to the Trustee or
to the holders of Securities for the purpose of ascertaining the persons entitled to participate in such distribution, the holders of the Senior Indebtedness and other indebtedness of the Company, the amount thereof or payable thereon, the amount or
amounts paid or distributed thereon and all other facts pertinent thereto or to this Article IV.



Section 4.11. Rights of Trustee and Paying Agent.



Notwithstanding the provisions of this Article IV or any other provision of this Indenture, the Trustee shall not be charged with knowledge of the existence of any facts that would prohibit the making of any payment
or distribution by the Trustee, and the Trustee may continue to make payments on the Securities, unless a Responsible Officer of the Trustee shall have received at the Corporate Trust Office at least five Business Days prior to the date of such
payment or distribution written notice of facts that would cause such payment or distribution with respect to the Securities to violate this Article IV. Only the Company may give such notice.



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Nothing in this Article IV shall impair the claims of, or payments to, the Trustee under or pursuant to
Section 8.1 and Section 9.7 hereof, and the Trustees rights to compensation, reimbursement and indemnification under Section 8.10 and Section 9.07 are not subordinated.



The Trustee in its individual or any other capacity may hold Senior Indebtedness with the same rights it would have if it
were not Trustee.



Section 4.12. Authorization to Effect Subordination.



Each holder of a Security by the holders acceptance
thereof authorizes and directs the Trustee on the holders behalf to take such action as may be necessary or appropriate to effectuate the subordination as provided in this Article IV, and appoints the Trustee to act as the holders
attorney-in-fact for any and all such purposes. If the Trustee does not file a proper proof of claim or proof of debt in the form required in any proceeding referred to in Section 8.9 hereof at least 30 days before the expiration of the time to file
such claim, the holders of any Senior Indebtedness or their representatives are hereby authorized to file an appropriate claim for and on behalf of the holders of the Securities.



Section 4.13. Article Applicable to Paying Agents.



In case at any time any Paying Agent other than the Trustee shall have been appointed by the Company and be then acting
hereunder, the term Trustee as used in this Article IV shall in such case (unless the context otherwise requires) be construed as extending to and including such Paying Agent within its meaning as fully for all intents and purposes as if
such Paying Agent were named in this Article IV in addition to or in place of the Trustee; provided, however, that the second and third paragraphs of Section 4.11 shall not apply to the Company or any Subsidiary of the Company if it or such
Subsidiary acts as Paying Agent.



Section 4.14. Senior Indebtedness Entitled
to Rely.



The holders of Senior Indebtedness shall have the
right to rely upon this Article IV, and no amendment or modification of the provisions contained herein shall diminish the rights of such holders unless the holders affected thereby shall have agreed in writing thereto.



Section 4.15. Permitted Payments.



Notwithstanding anything to the contrary in this Article IV, the holders of
Securities may receive and retain at any time on or prior to Stated Maturity (i) securities that are subordinated to at least the same extent as the Securities to (a) Senior Indebtedness and (b) any securities issued in exchange for Senior
Indebtedness and (ii) payments and other distributions made from any trust created pursuant to Section 10.1.



ARTICLE V



PURCHASE AT THE OPTION OF HOLDERS UPON A FUNDAMENTAL CHANGE



Section 5.1. Fundamental Change Put.



(a) In the event that a Fundamental Change shall occur at any time prior to February 15, 2011, each Holder shall have the right, at the Holders option, but subject to the provisions of this Section 5.1, to require the Company to
purchase, and upon the



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exercise of such right, the Company shall purchase, all of such Holders Securities not theretofore called for redemption, or any portion of the
Principal Amount thereof that is equal to $1,000 or an integral multiple thereof, as directed by such Holder pursuant to this Section 5.1, on the date designated by the Company (the Fundamental Change Purchase Date) that is a
Business Day no later than 35 Business Days after the date of notice pursuant to Section 5.1(b) of the occurrence of a Fundamental Change (subject to extension to comply with applicable law). The Company shall be required to purchase such Securities
at a purchase price in cash or subject to fulfillment by the Company of the conditions set forth in this Section 5, shares of Applicable Stock (valued at 95% of the market price of such stock), in an amount or value equal to 100% of the Principal
Amount plus any accrued and unpaid interest (including any Additional Interest) to, but excluding, the Fundamental Change Purchase Date (the Fundamental Change Purchase Price). In the event that a Fundamental Change Purchase Date
is a date that is after any Regular Record Date but on or before the corresponding Interest Payment Date, the Company shall be required to pay accrued and unpaid interest and Additional Interest, if any, to the holder of the repurchased Security and
not the Holder on the Regular Record Date.



Subject to the
fulfillment by the Company of the conditions set forth in this Section 5, the Company may elect to pay the Fundamental Change Purchase Price by delivering a number of shares of Common Stock equal to (i) the Fundamental Change Purchase Price divided
by (ii) 95% of the average of the closing sales prices per share of Common Stock for the five consecutive Trading Days immediately preceding the second Trading Day prior to the Fundamental Change Purchase Date.



(b) No later than 20 calendar days after the occurrence of a
Fundamental Change, the Company shall mail a written notice of the Fundamental Change by first class mail to the Trustee (and the Paying Agent if the Trustee is not then acting as Paying Agent) and to each Holder at its address shown in the Register
of the Registrar, and to beneficial owners as required by applicable law. The notice shall include a form of Fundamental Change Purchase Notice to be completed by the Holder and shall briefly state, as applicable:



| | (i) | the date of such Fundamental Change and, briefly, the events causing such Fundamental Change;
| | --- | ---------------------------------------------------------------------------------------------



| | (ii) | the date by which the Fundamental Change Purchase Notice must be delivered to the Paying Agent in order for a Holder to exercise the purchase right pursuant to this Section 5.1;
| | ---- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (iii) | the Fundamental Change Purchase Date;
| | ----- | -------------------------------------



| | (iv) | the Fundamental Change Purchase Price and whether the Fundamental Change Purchase Price will be paid in cash or Applicable Stock;
| | ---- | ---------------------------------------------------------------------------------------------------------------------------------



| | (v) | the name and address of the Paying Agent and Conversion Agent;
| | --- | --------------------------------------------------------------



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| | (vi) | the Conversion Rate and any adjustments thereto;
| | ---- | ------------------------------------------------



| | (vii) | that the Securities as to which a Fundamental Change Purchase Notice has been given may be converted into Common Stock pursuant to Article XII of this Indenture only if the
Fundamental Change Purchase Notice has been withdrawn in accordance with the terms of this Indenture;
| | ----- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (viii) | that the Securities must be surrendered to the Paying Agent to collect payment;
| | ------ | -------------------------------------------------------------------------------



| | (ix) | that the Fundamental Change Purchase Price for any Security as to which a Fundamental Change Purchase Notice has been duly given and not withdrawn shall be paid promptly following
the later of the Fundamental Change Purchase Date and the time of surrender of such Security as described in Section 5.1(b)(viii)
| | ---- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (x) | the procedures the Holder must follow to exercise rights under this Section 5.1 and a brief description of such rights;
| | --- | -----------------------------------------------------------------------------------------------------------------------



| | (xi) | briefly, the conversion rights of the Securities, and that the Holder must satisfy the requirements set forth in the Indenture in order to convert the Securities;
| | ---- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (xii) | the procedures for withdrawing a Fundamental Change Purchase Notice, including a form of notice of withdrawal;
| | ----- | --------------------------------------------------------------------------------------------------------------



| | (xiii) | that, unless the Company defaults in making payment of such Fundamental Change Purchase Price, interest (including any Additional Interest), if any, on Securities surrendered for
purchase by the Company shall cease to accrue on and after the Fundamental Change Purchase Date; and
| | ------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (xiv) | the CUSIP number(s) of the Securities.
| | ----- | --------------------------------------



Upon receipt of a Company Request, the Trustee shall give the notice of purchase right in the Companys name and at the Companys expense;
provided, however, that the Company makes such request at least five Business Days (unless a shorter period shall be satisfactory to the Trustee) prior to the date by which such notice of purchase right must be given to the Holders in accordance
with this Section 5.1(b); provided, further, that the text of the notice of purchase right shall be prepared by the Company.



If any of the Securities is in the form of a Global Security, then the Company shall modify such notice to the extent necessary to accord with the
procedures of the Depositary applicable to the purchase of Global Securities.



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Simultaneously with delivering the written notice pursuant to this Section 5.1(b), the Company shall
publish a notice containing all information specified in such written notice in a newspaper of general circulation in New York, New York or publish such information on the Companys website, or through such other public medium that reasonably
could be expected to inform Holders of such information.



(c) A Holder may exercise its rights specified in clause (a) of this Section 5.1 upon delivery of a written notice (which shall be in substantially the form included on the reverse side of the Securities entitled
Option of Holder to Elect Purchase and which may be delivered by letter, overnight courier, hand delivery, facsimile transmission or in any other written form and, in the case of Global Securities, may be delivered electronically or by
other means in accordance with the Depositarys customary procedures) of the exercise of such rights (a Fundamental Change Purchase Notice) to the Paying Agent at any time on or before the 20th Business Day after the date of
the Companys notice of the Fundamental Change (subject to extension to comply with applicable law).



The Fundamental Change Purchase Notice delivered by a Holder shall state (i) the Fundamental Change Purchase Date, (ii) if certificated Securities, the
certificate number or numbers of the Security or Securities which the Holder shall deliver to be purchased (if not certificated, the notice must comply with Applicable Procedures), (iii) the portion of the Principal Amount of the Security which the
Holder shall deliver to be purchased, which portion must be $1,000 or an integral multiple thereof, and (iv) that such Security shall be purchased pursuant to the terms and conditions specified in the Securities and this Indenture.



Delivery of a Security (together with all necessary endorsements) to the
Paying Agent by book-entry transfer or physical delivery prior to, on or after the Fundamental Change Purchase Date at the offices of the Paying Agent is a condition to receipt by the Holder of the Fundamental Change Purchase Price therefor;
provided, however, that such Fundamental Change Purchase Price shall be so paid pursuant to this Section 5.1 only if the Security so delivered to the Paying Agent shall conform in all respects to the description thereof in the related Fundamental
Change Purchase Notice, as determined by the Company.



The
Company shall purchase from the Holder thereof, pursuant to this Section 5.1, a portion of a Security if the Principal Amount of such portion is $1,000 or an integral multiple of $1,000. Provisions of the Indenture that apply to the purchase of all
of a Security pursuant to Section 5.1 through Section 5.6 also apply to the purchase of such portion of such Security.



A Paying Agent shall promptly notify the Company of the receipt by it of any Fundamental Change Purchase Notice or written withdrawal thereof.



Anything herein to the contrary notwithstanding, in the case of Global
Securities, any Fundamental Change Purchase Notice may be delivered or withdrawn and such Securities may be surrendered or delivered for purchase in accordance with the Applicable Procedures as in effect from time to time.



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Section 5.2. Conditions to the Companys Election to Pay the Fundamental Change Purchase Price in Applicable
Stock.



The Company may, at its option pay the Fundamental
Change Purchase Price payable to Holders pursuant to Section 5.1 in shares of Applicable Stock, if the following conditions are satisfied:



(1) The Company shall have provided written notice of the Fundamental Change to the Trustee (and the Paying Agent if the Trustee is not
then acting as Paying Agent) and to each Holder pursuant to Section 5.1(b).



(2) The shares of Applicable Stock to be so issued:



(a) shall be, or shall have been approved for, listing on a national securities exchange or quoted on the Nasdaq National Market, prior to
the Fundamental Change Purchase Date;



(b)
shall not require registration under the Securities Act or the Exchange Act before such shares may be freely transferable without being subject to any transfer restrictions under the Securities Act or if such registration is required, such
registration shall be completed and shall become effective prior to the Fundamental Change Purchase Date;



(c) shall not require qualification or registration with, or approval of, any governmental authority under any state law before such
shares may be validly issued or delivered or if such qualification or registration is required or such approval must be obtained, such qualification or registration shall be completed, or such approval shall be obtained, prior to the Fundamental
Change Purchase Date; and



(d) shall, upon
issuance, be duly and validly issued and fully paid and nonassessable, free and clear of any preemptive or similar rights.



Section 5.3. Effect of Fundamental Change Purchase Notice.



(a) Upon receipt by the Paying Agent of the Fundamental Change Purchase Notice specified in Section 5.1(c), the Holder of the Security in
respect of which such Fundamental Change Purchase Notice was given shall (unless such Fundamental Change Purchase Notice is withdrawn as specified in the following paragraph) thereafter be entitled to receive the Fundamental Change Purchase Price
with respect to such Security. Such Fundamental Change Purchase Price shall be paid to such Holder, subject to receipt of cash or if the conditions for payment in Applicable Stock set forth in Section 5 are fulfilled, Common Stock by the Paying
Agent, promptly following the later of (a) the Fundamental Change Purchase Date with respect to such Security (provided the conditions in Section 5.1(c) have been satisfied) and (b) the time of book-entry transfer or delivery of such Security to the
Paying Agent by the Holder thereof in the manner required by Section 5.1(c). Securities in respect of which a Fundamental Change Purchase Notice has been given by the Holder thereof may not be converted pursuant to Article XII on or after the date
of the delivery of such



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Fundamental Change Purchase Notice unless such Fundamental Change Purchase Notice has first been validly withdrawn as specified in the following paragraph.



(b) A Fundamental Change Purchase Notice may
be withdrawn by means of a written notice (which may be delivered by letter, overnight courier, hand delivery, facsimile transmission or in any other written form and, in the case of Global Securities, may be delivered electronically or by other
means in accordance with the Depositarys customary procedures) of withdrawal delivered by the Holder to the Paying Agent at any time prior to the close of business on the Business Day immediately preceding the Fundamental Change Purchase Date,
specifying (a) the Principal Amount of the Security or portion thereof (which must be a Principal Amount of $1,000 or an integral multiple of $1,000 in excess thereof) with respect to which such notice of withdrawal is being submitted, (b) if
certificated Securities have been issued, the certificate numbers of the withdrawn Securities, or if not certificated, such notice must comply with Applicable Procedures, and (c) the Principal Amount, if any, which remains subject to the Fundamental
Change Purchase Notice. If a Fundamental Change Purchase Notice has been properly withdrawn pursuant to this Section 5.3(b) prior to the Fundamental Change Purchase Date, the Company shall not be obligated to purchase those Securities so identified
in such notice of withdrawal.



Section 5.4. Deposit of Fundamental Change
Purchase Price.



Prior to 10:00 a.m., New York City time,
on the applicable Fundamental Change Purchase Date, the Company shall deposit with the Paying Agent (or if the Company or a Subsidiary or an Affiliate of either of them is acting as the Paying Agent, shall segregate and hold in trust as provided in
Section 2.4) an amount of cash (in immediately available funds if deposited on such Business Day) or, if the conditions for payment in Applicable Stock set forth in this Section 5 are fulfilled, Common Stock with a value sufficient to pay the
aggregate Fundamental Change Purchase Price of all the Securities or portions thereof which are to be purchased as of such Fundamental Change Purchase Date.



If the Paying Agent holds, in accordance with the terms hereof, at 10:00 a.m., New York City time, on the applicable Fundamental Change Purchase Date,
cash or Applicable Stock sufficient to pay the Fundamental Change Purchase Price of any Securities for which a Fundamental Change Purchase Notice has been tendered and not withdrawn pursuant to Section 5.3(b), then, on such Fundamental Change
Purchase Date, such Securities shall cease to be outstanding and interest and Additional Interest, if any, on such Securities shall cease to accrue, whether or not such Securities are delivered to the Paying Agent, and the rights of the Holders in
respect thereof shall terminate (other than the right to receive the Fundamental Change Purchase Price upon delivery of such Securities).



The Company shall publicly announce the Principal Amount of Securities purchased as a result of such Fundamental Change on or as soon as practicable after
the Fundamental Change Purchase Date by publishing a notice containing such information in a newspaper of general circulation in New York, New York or by publishing such information on the Companys website, or through such other public medium
that reasonably could be expected to inform Holders of such information.



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Section 5.5. Securities Purchased in Part.



Any Certificated Security that is to be purchased only in part shall be surrendered at the office of the Paying Agent (with,
if the Company or the Trustee so requires, due endorsement by, or a written instrument of transfer in form satisfactory to the Company and the Trustee duly executed by, the Holder thereof or such Holders attorney duly authorized in writing)
and promptly after the Fundamental Change Purchase Date the Company shall execute and the Trustee shall authenticate and deliver to the Holder of such Security, without charge, a new Security or Securities, of any authorized denomination or
denominations as may be 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 that is not purchased.



Section 5.6. Covenant to Comply With Securities Laws Upon Purchase of Securities.



When complying with the provisions of Section 5.1 hereof
(provided that such offer or purchase constitutes an issuer tender offer for purposes of Rule 13e-4 (which term, as used herein, includes any successor provision thereto) under the Exchange Act at the time of such offer or purchase), and
subject to any exemptions available under applicable law, the Company shall: (a) if applicable, comply with Rule 13e-4 and Rule 14e-1 (or any successor provision) under the Exchange Act; (b) file the related Schedule TO (or any successor schedule,
form or report) if required under the Exchange Act; and (c) otherwise comply with all United States federal and state securities laws so as to permit the rights and obligations under this Article V to be exercised in the time and in the manner
specified therein.



Section 5.7. Repayment to the Company.



To the extent that the aggregate amount of cash or Applicable Stock
(valued in accordance with the provisions of Section 5.1(a) hereof) deposited by the Company pursuant to Section 5.4 exceeds the aggregate Fundamental Change Purchase Price of the Securities or portions thereof which the Company is obligated to
purchase as of the Fundamental Change Purchase Date then, promptly after the Fundamental Change Purchase Date, the Paying Agent shall return any such excess to the Company together with interest, if any, thereon.



ARTICLE VI



COVENANTS



Section 6.1. Payment of Securities.



The Company shall pay interest on the Securities as provided in the Securities. The Company shall promptly make all payments in respect of the Securities
on the dates and in the manner provided in the Securities or pursuant to this Indenture. Principal amount, Redemption Price, Purchase Price and Fundamental Change Purchase Price and accrued and unpaid interest and Additional Interest, if any, 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 or securities, if permitted hereunder, sufficient to pay all such amounts then due. The
Company shall, to the fullest extent permitted by law, pay interest on overdue principal and overdue installments of interest and Additional Interest, if any, at the rate borne by the Securities



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per annum. All references in this Indenture or the Securities to interest shall be deemed to include Additional Interest, if any, payable pursuant to the
Registration Rights Agreement.



Payment of the principal of and
interest and Additional Interest, if any, 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 or in Applicable Stock, as the case may
be.



Subject to Section 3.1 and Section 5.1, the Company shall
pay interest and Additional Interest, if any, on the Securities to the Person in whose name the Securities are registered at the close of business on the Regular Record Date next preceding the corresponding Interest Payment Date. Any such interest
and Additional Interest, if any, not so punctually paid or duly provided for shall forthwith cease to be payable to the Holder on such Regular Record Date and may be paid (a) to the Person in whose name the Securities are registered at the close of
business on a Special Record Date for the payment of such defaulted interest and Additional Interest, if any, to be fixed by the Trustee, notice whereof shall be given to the Holders not less than 10 calendar days prior to such Special Record Date
or (b) at any time in any other lawful manner not inconsistent with the requirements of any securities exchange on which the Securities may be listed, and upon such notice as may be required by such exchange.



The Holder must surrender the Securities to the Paying Agent to collect
payment of principal. Payment of interest and Additional Interest, if any, on Certificated Securities in the aggregate principal amount of $5,000,000 or less shall be made by check mailed to the address of the Person entitled thereto as such address
appears in the Register, and payment of interest and Additional Interest, if any, on Certificated Securities in aggregate principal amount in excess of $5,000,000 shall be made by wire transfer in immediately available funds at the election of such
Holder. Notwithstanding the foregoing, so long as the Securities are registered in the name of a Depositary or its nominee, all payments with respect to the Securities shall be made by wire transfer of immediately available funds to the account of
the Depositary or its nominee.



Section 6.2. SEC and Other Reports to the
Trustee.



(a) The Company shall ensure
delivery to the Trustee within 15 calendar days after it files such annual and quarterly reports, information, documents and other reports with the SEC, copies of its annual report and of the information, documents and other reports (or copies of
such portions of any of the foregoing as the SEC may by rules and regulations prescribe) which the Company is required to file with the SEC pursuant to Section 13 or 15(d) of the Exchange Act in accordance with TIA Section 314(a). In the event the
Company is at any time no longer subject to the reporting requirements of Section 13 or 15(d) of the Exchange Act, it shall continue to provide the Trustee with reports containing substantially the same information as would have been required to be
filed with the SEC had the Company continued to have been subject to such reporting requirements. In such event, such reports shall be provided at the times the Company would have been required to provide reports had it continued to have been
subject to such reporting requirements. The Company also shall comply with the other provisions of TIA Section 314(a). Delivery of such reports, information and documents 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 conclusively on



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Officers Certificates). The Trustee shall have no duty or responsibility to review such reports, information or documents.



(b) The Company intends to file the reports referred to in
paragraph (a) above in this Section 6.2 hereof with the SEC in electronic form pursuant to Regulation S-T of the SEC using the SECs Electronic Data Gathering, Analysis and Retrieval (EDGAR) system. Within 15 days after the
Company files with the SEC copies of its annual reports and other information, documents and reports (or copies of such portions of any of the foregoing as the SEC may by rules and regulations prescribe) which it is required to file with the SEC
pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934, the Company shall file the same with the Trustee. The Company also shall comply with the other provisions of TIA 314(a). The Company may deliver such reports to the Trustee by
electronic means in replace of mailing such reports, provided, however, the Trustee agrees to such other means in writing. The Trustee shall have no duty to search for or obtain any electronic or other filings that the Company makes with the SEC,
regardless of whether such filings are periodic, supplemental or otherwise. Delivery of the reports, information and documents to the Trustee pursuant to this Section 6.2(b) shall be solely for the purposes of compliance with this Section 6.2(b) and
with TIA Section 314(a). The Trustees receipt of such reports, information and documents shall not constitute notice to it of the contents thereof or of any matter determinable from the content thereof, including the Companys compliance
with any of its covenants hereunder, as to which the Trustee is entitled to rely upon Officers Certificates.



Section 6.3. Compliance Certificate.



The Company shall deliver to the Trustee within 120 calendar days after the end of each fiscal year of the Company an Officers Certificate, stating
whether or not to the knowledge of the signers thereof, the Company is in compliance with all conditions and covenants under this Indenture.



Section 6.4. Further Instruments and Acts.



The Company shall execute and deliver such further instruments and do such further acts as may be reasonably necessary or proper to carry out more
effectively the purposes of this Indenture.



Section 6.5. Maintenance of
Office or Agency of the Trustee, Registrar, Paying Agent and Conversion Agent.



The Company shall maintain in the Borough of Manhattan, New York, New York, an office or agency of the Trustee, Registrar, Paying Agent and Conversion Agent where Securities may be presented or surrendered for
payment, where Securities may be surrendered for registration of transfer, exchange, redemption, repurchase or conversion and where notices and demands to or upon the Company in respect of the Securities and this Indenture may be served. The office
of the Trustee located in New York City at Corporate Trust Office, shall initially be such office or agency for all of the aforesaid purposes. The Company shall give prompt written notice to the Trustee of the location, and of any change in the
location, of any such office or agency (other than a change in the location of the office of the Trustee). If at any time the



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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 address of the Trustee set forth in Section 14.2.



The Company may also from time to time designate one or more other offices or agencies 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, New
York, New York, for such purposes.



Section 6.6. Delivery of Information
Required Under Rule 144A.



Upon the request of a Holder or
any beneficial owner of Securities or holder or beneficial owner of Common Stock issued upon conversion thereof, the Company shall promptly furnish or cause to be furnished the information required pursuant to Rule 144A(d)(4) under the Securities
Act to such Holder or any beneficial owner of Securities or holder or beneficial owner of Common Stock, or to a prospective purchaser of any such security designated by any such holder, as the case may be, to the extent required to permit compliance
by such Holder or holder with Rule 144A under the Securities Act in connection with the resale of any such security. Whether a person is a beneficial owner shall be determined by the Company to the Companys reasonable satisfaction.



Section 6.7. Waiver of Stay, Extension or Usury Laws.



The Company covenants (to the extent that it may lawfully do so) that it
shall not at any time insist upon, or plead, or in any manner whatsoever claim or take the benefit or advantage of, any stay or extension law or any usury or other law wherever enacted, now or at any time hereafter in force, which would prohibit or
forgive the Company from paying all or any portion of the Principal Amount, Redemption Price, Purchase Price or Fundamental Change Purchase Price in respect of Securities, or any interest and Additional Interest, if any, on such amounts, as
contemplated herein, or 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 shall not
hinder, delay or impede the execution of any power herein granted to the Trustee, but shall suffer and permit the execution of every such power as though no such law had been enacted.



Section 6.8. Statement by Officers as to Default.



The Company shall deliver to the Trustee, as soon as practicable and in any event within five Business Days after the
Company becomes aware of the occurrence of any Default or Event of Default, an Officers Certificate setting forth the details of such Default or Event of Default and the action which the Company proposes to take with respect thereto.



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ARTICLE VII



SUCCESSOR CORPORATION



Section 7.1. When Company May Merge or Transfer Assets.



The Company shall not consolidate with or merge with or into any other person or convey, transfer, sell, lease or otherwise dispose of all or
substantially all of its properties and assets to any person, unless:



(a) either (i) the Company shall be the continuing corporation 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, transfer, sale, lease or other disposition all or substantially all of the properties and assets of the Company substantially as an entirety (1) shall be organized and validly existing under the laws of the United States or any State
thereof or the District of Columbia and (2) shall expressly assume, by an indenture supplemental hereto, executed and delivered to the Trustee, in form reasonably satisfactory to the Trustee, all of the obligations of the Company under the
Securities, this Indenture and the Registration Rights Agreement and, to the extent applicable, otherwise comply with the provisions of Section 12.4;



(b) immediately after giving effect to such transaction, no Default shall have occurred and be continuing; and



(c) the Company shall have delivered to the Trustee an
Officers Certificate and an Opinion of Counsel, each stating that such consolidation, merger, conveyance, transfer, sale, lease or other disposition and, if a supplemental indenture is required in connection with such transaction, such
supplemental indenture, comply with this Article VII and that all conditions precedent herein provided for relating to such transaction have been satisfied.



For purposes of the foregoing, the transfer (by lease, assignment, sale or otherwise) of the properties and assets of one or more Subsidiaries, which, if
such assets were owned by the Company, together with the assets of all of the other Subsidiaries of the Company, would constitute all or substantially all of the properties and assets of the Company, shall be deemed to be the transfer of all or
substantially all of the properties and assets of the Company unless such transfer is to the Company or another Subsidiary. The successor Person formed by such consolidation or into which the Company is merged or the successor Person to which such
conveyance, transfer, sale, lease or other disposition 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 had been named as the
Company herein; and thereafter, except in the case of a conveyance, transfer, sale, lease or other disposition and any obligations the Company may have under a supplemental indenture, the Company shall be discharged from all obligations and
covenants under this Indenture and the Securities. Subject to Section 11.6, the Company, the Trustee and the successor Person shall enter into a supplemental indenture to evidence the succession and substitution of such successor Person and such
discharge and release of the Company.



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ARTICLE VIII



DEFAULTS AND REMEDIES



Section 8.1. Events of Default.



So long as any Securities are outstanding, each of the following shall be an Event of Default:



(a) the failure by the Company to pay the principal amount
of any Security when the same becomes due and payable whether at maturity or upon acceleration;



(b) the failure by the Company to pay any accrued and unpaid interest on any Security and Additional Interest, if any, in each case, when
due and payable, and such default shall continue for a period of 30 days;



(c) the failure by the Company to convert any portion of any Security following the exercise by the Holder of the right to convert such Security into Common Stock pursuant to and in accordance with Article XII;



(d) the failure by the Company to redeem any
Security, or any portion thereof, called for redemption by the Company pursuant to and in accordance with Article III and;



(e) the failure by the Company to purchase any Security, or any portion thereof, upon the exercise by the Holder of such Holders
right to require the Company to purchase such Securities pursuant to and in accordance with Article V;



(f) the failure by the Company to provide notice in the event of a Fundamental Change in accordance with Section 5.1(b);



(g) the failure by the Company to perform or observe any
other term, covenant or agreement contained in the Securities or the Indenture for a period of 60 calendar days after written notice of such failure has been given, by certified mail, (1) to the Company by the Trustee or (2) to the Company and the
Trustee by the Holders of at least 25% in aggregate principal amount of the Securities then outstanding;



(h) there shall have occurred a default under any credit agreement, mortgage, indenture or instrument under which there may be issued or
by which there may be secured or evidenced any Indebtedness of the Company or any of its Subsidiaries for money borrowed whether such Indebtedness now exists, or is created after the date of this Indenture, which default (i) involves the failure to
pay principal of or any premium or interest on such Indebtedness in an amount in excess of $7.5 million when such Indebtedness becomes due and payable at the stated maturity thereof, and such default shall continue after any applicable grace period
or (ii) results in the acceleration of such Indebtedness prior to the stated maturity thereof, and, in each case, the principal amount of any such Indebtedness, together with the principal amount of any other such Indebtedness so unpaid at its
stated maturity or the stated maturity of which has been so accelerated, aggregates $10,000,000 or more;



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(i) there shall be a failure by the Company or any of its Subsidiaries to pay final
judgments not covered by insurance aggregating in excess of $7,500,000, which judgments are not paid, discharged or stayed for a period of 60 calendar days;



(j) the Company or any Designated Subsidiary, or any group of two or more Subsidiaries that, taken as a whole, would constitute a
Designated Subsidiary, pursuant to or under or within the meaning of any Bankruptcy Law:



| | (i) | commences a voluntary case or proceeding;
| | --- | -----------------------------------------



| | (ii) | consents to the entry of any order for relief against it in an involuntary case or proceeding or the commencement of any case against it;
| | ---- | -----------------------------------------------------------------------------------------------------------------------------------------



| | (iii) | consents to the appointment of a Custodian of it or for any substantial part of its property;
| | ----- | ---------------------------------------------------------------------------------------------



| | (iv) | makes a general assignment for the benefit of its creditors;
| | ---- | ------------------------------------------------------------



| | (v) | files a petition in bankruptcy or answer or consent seeking reorganization or relief; or
| | --- | ----------------------------------------------------------------------------------------



| | (vi) | consents to the filing of such petition or the appointment of or taking possession by a Custodian; or
| | ---- | -----------------------------------------------------------------------------------------------------



(k) a court of competent jurisdiction enters an order or decree under any Bankruptcy Law that:



| | (i) | is for relief against the Company or any Designated Subsidiary in an involuntary case or proceeding, or adjudicates the Company or any Designated Subsidiary insolvent or bankrupt;
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | appoints a Custodian of the Company or any Designated Subsidiary or for any substantial part of the property of either; or
| | ---- | --------------------------------------------------------------------------------------------------------------------------



| | (iii) | orders the winding up or liquidation of the Company or any Designated Subsidiary, and the order of decree remains unstayed and in effect for 60 days.
| | ----- | -----------------------------------------------------------------------------------------------------------------------------------------------------



Section 8.2. Acceleration.



If an Event of Default (other than an Event of Default specified in Section
8.1(j) or Section 8.1(k) with respect to the Company) occurs and is continuing (including an Event of Default specified in Section 8.1(j) or Section 8.1(k) with respect to one or more Designated Subsidiaries), the Trustee by notice to the Company,
or the Holders of at least 25% in aggregate principal amount of the Securities at the time outstanding by notice to the Company and the



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Trustee, may declare the principal amount plus accrued and unpaid interest and Additional Interest, if any, on all the Securities to be immediately due and
payable.



Upon such a declaration, such accelerated amount
shall be due and payable immediately.



If an Event of Default
specified in Section 8.1(j) or Section 8.1(k) occurs with respect to the Company and is continuing, the principal amount plus accrued and unpaid interest and Additional Interest, if any, on all the Securities shall become and be immediately due and
payable without any declaration or other act on the part of the Trustee or any Holders.



The Holders of not less than a majority in aggregate principal amount of the Securities at the time outstanding, by notice to the Trustee (and without notice to any other Holder) may rescind an acceleration and its
consequences if the rescission would not conflict with any judgment or decree of a court of competent jurisdiction and if all existing Events of Default have been cured or waived except nonpayment of the Principal Amount plus accrued and unpaid
interest and Additional Interest, if any, that have become due solely as a result of acceleration. No such rescission shall affect any subsequent Default or impair any right consequent thereto.



Section 8.3. Other Remedies.



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 and unpaid interest and Additional Interest, if any, 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.



Section 8.4. Waiver of Existing Defaults.



Subject to Section 8.7 and Section 11.2, the Holders of a majority in aggregate principal amount of the Securities at the time outstanding, by notice to
the Trustee (and without notice to any other Holder), may waive certain provisions of this Indenture relating to the Securities, except for: (a) an Event of Default described in Section 8.1(a), Section 8.1(b), or Section 8.1(c); or (b) a Default in
respect of any provision of this Indenture or the Securities, which, under Section 11.2, cannot be amended or modified without the consent of each Holder affected thereby.



When a Default is waived, it is deemed cured, but no such waiver shall extend to any subsequent or other Default or impair
any consequent right. This Section 8.4 shall be in lieu of Section 316(a)1(B) of the TIA and such Section 316(a)1(B) is hereby expressly excluded from this Indenture, as permitted by the TIA.



Section 8.5. Control by Majority.



The Holders of a majority in aggregate principal amount of the Securities at
the time outstanding may direct the time, method and place of conducting any proceeding for any remedy available to the Trustee or of exercising any trust or power conferred on the Trustee. However,



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the Trustee may refuse to follow any direction that conflicts with law or this Indenture or that the Trustee determines in good faith is prejudicial to the
rights of other Holders or would involve the Trustee in personal liability or expense unless the Trustee is provided security or indemnity satisfactory to it. This Section 8.5 shall be in lieu of Section 316(a)1(A) of the TIA and such Section
316(a)1(A) is hereby expressly excluded from this Indenture, as permitted by the TIA.



Section 8.6. Limitation on Suits.



A Holder may
not pursue any remedy with respect to this Indenture or the Securities unless:



(a) the Holder gives to the Trustee written notice stating that an Event of Default is continuing;



(b) the Holders of at least 25% in aggregate principal
amount of the Securities at the time outstanding make a written request to the Trustee to pursue the remedy;



(c) such Holder or Holders provide to the Trustee security or indemnity satisfactory to the Trustee against any loss, liability or
expense;



(d) the Trustee does not comply with
the request within 60 days after receipt of such notice, request and offer of security or indemnity; and



(e) the Holders of a majority in aggregate principal amount of the Securities at the time outstanding do not give the Trustee a direction
inconsistent with the request during such 60-day period.



A
Holder may not use this Indenture to prejudice the rights of any other Holder or to obtain a preference or priority over any other Holder.



Section 8.7. Rights of Holders to Receive Payment or to Convert.



Notwithstanding any other provision of this Indenture, the right of any Holder to receive payment of the Principal Amount, Redemption Price, Purchase
Price, Fundamental Change Purchase Price or interest and Additional Interest, if any, in respect of the Securities held by such Holder, on or after the respective due dates expressed in the Securities and in this Indenture, and to convert such
Securities in accordance with Article XII, or to bring suit for the enforcement of any such payment on or after such respective dates or the right to convert, is absolute and unconditional and shall not be impaired or affected adversely without the
consent of such Holder.



Section 8.8. Collection Suit by Trustee.



If an Event of Default described in Section 8.1(a), Section
8.1(b), Section 8.1(d) or Section 8.1(e) occurs and is continuing, the Trustee may recover judgment in its own name and as trustee of an express trust against the Company or another obligor on the Securities for the whole amount owing with respect
to the Securities and the amounts provided for in Section 9.7.



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Section 8.9. Trustee May File Proofs of Claim.



In case of the pendency of any receivership, insolvency, liquidation, bankruptcy, reorganization, arrangement, adjustment,
composition or other judicial proceeding relative to the Company or any other obligor upon the Securities or the property of the Company or of such other obligor or their creditors, the Trustee (irrespective of whether the Principal Amount,
Redemption Price, Purchase Price, Fundamental Change Purchase Price or interest and Additional Interest, if any, in respect of the Securities shall then be due and payable as therein expressed or by declaration or otherwise and irrespective of
whether the Trustee shall have made any demand on the Company for the payment of any such amount) shall be entitled and empowered, by intervention in such proceeding or otherwise:



(a) to file and prove a claim for the whole amount of the Principal Amount, Redemption Price, Purchase
Price, Fundamental Change Purchase Price, or interest and Additional Interest, if any, and to file such other papers or documents as may be necessary or advisable in order to have the claims of the Trustee (including any claim for the reasonable
compensation, expenses, disbursements and advances of the Trustee, its agents and counsel or any other amounts due the Trustee under Section 9.7) and of the Holders allowed in such judicial proceeding, and



(b) 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 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 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
9.7.



Nothing contained herein 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.



Section 8.10.
Priorities.



After an Event of Default any money or
other property distributable in respect of the Companys obligations under this Indenture shall be paid in the following order:



FIRST: to the Trustee (including any predecessor trustee) for amounts due under Section 9.7;



SECOND: to Holders for amounts due and unpaid on the
Securities for the Principal Amount, Redemption Price, Purchase Price, Fundamental Change Purchase Price or interest and Additional Interest, if any, as the case may be, ratably, without preference or priority of any kind, according to such amounts
due and payable on the Securities; and



THIRD:
the balance, if any, to the Company.



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The Trustee may fix a record date and payment date for any payment to Holders pursuant to this Section
8.10. At least 10 calendar days prior to such record date, the Trustee shall mail to each Holder and the Company a notice that states the record date, the payment date and the amount to be paid.



Section 8.11. 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, a court in its discretion may require the filing by any party litigant (other than the Trustee) in the suit of an undertaking to pay the costs of the suit, and the
court in its discretion may assess reasonable costs, including reasonable attorneys fees and expenses, against any party litigant in the suit, having due regard to the merits and good faith of the claims or defenses made by the party litigant.
This Section 8.11 does not apply to a suit by the Trustee, a suit by a Holder pursuant to Section 8.7 or a suit by Holders of more than 10% in aggregate principal amount of the Securities at the time outstanding. This Section 8.11 shall be in lieu
of Section 315(e) of the TIA and such Section 315(e) is hereby expressly excluded from this Indenture, as permitted by the TIA.



ARTICLE IX



TRUSTEE



Section
9.1. Duties of Trustee.



(a) If an
Event of Default has occurred and is continuing, 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.



(b) Except during the continuance of an Event of Default:



| | (i) | the Trustee need perform only those duties that are specifically set forth in this Indenture and no implied covenants or obligations shall be read into this Indenture against the
Trustee; and
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | in the absence of bad faith on its part, the Trustee may conclusively rely, as to the truth of the statements and the correctness of the opinions expressed therein, upon
certificates or opinions furnished to the Trustee and conforming to the requirements of this Indenture, but in the case of any such certificates or opinions which by any provision hereof are specifically required to be furnished to the Trustee, the
Trustee shall be under a duty to examine the certificates and opinions to determine whether or not they conform to the requirements of this Indenture, but need not confirm or investigate the accuracy of mathematical calculations or other facts
stated therein.
| | ---- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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This Section 9.1(b) shall be in lieu of Section 315(a) of the TIA and such Section 315(a) is hereby
expressly excluded from this Indenture, as permitted by the TIA.



(c) The Trustee may not be relieved from liability for its own negligent action, its own negligent failure to act or its own willful misconduct, except that:



| | (i) | this clause (c) does not limit the effect of clause (b) or (d) of this Section 9.1;
| | --- | -----------------------------------------------------------------------------------



| | (ii) | the Trustee shall not be liable for any error of judgment made in good faith by a Responsible Officer of the Trustee unless it is proved that the Trustee was negligent in
ascertaining the pertinent facts; and
| | ---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (iii) | the Trustee shall not be liable with respect to any action it takes or omits to take in good faith in accordance with a direction received by it pursuant to Section 8.5.
| | ----- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------



Subparagraphs (c)(i), (ii) and (iii) shall be
in lieu of Sections 315(d)(1), 315(d)(2) and 315(d)(3) of the TIA, respectively, and such Sections 315(d)(1), 315(d)(2) and 315(d)(3) are hereby expressly excluded from this Indenture, as permitted by the TIA.



(d) The Trustee may refuse to perform any duty or exercise
any right or power or expend or risk its own funds or otherwise incur any financial liability unless it receives security or indemnity reasonably satisfactory to it against any loss, liability or expense.



(e) Money held by the Trustee in trust hereunder need not be
segregated from other funds except to the extent required by law. The Trustee (acting in any capacity hereunder) shall be under no liability for interest on any money received by it hereunder unless otherwise agreed in writing with the Company.



(f) The Trustee shall comply with the
reporting requirements set forth in Section 313 of the TIA.



(g) Every provision of this Indenture that in any way relates to the Trustee is subject to paragraphs (a), (b), (c) and (d) of this Section.



Section 9.2. Rights of Trustee.



Subject to its duties and responsibilities under the TIA and this Indenture,



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



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(b) 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, conclusively rely upon an
Officers Certificate;



(c) 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;



(d)
the Trustee shall not be liable for any action taken, suffered, or omitted to be taken by it in good faith which it reasonably believes to be authorized or within its rights or powers conferred under this Indenture;



(e) the Trustee may consult with counsel selected by it and
any advice or Opinion of Counsel shall be full and complete authorization and protection in respect of any action taken or suffered or omitted by it hereunder in good faith and in reliance on such advice or Opinion of Counsel;



(f) the Trustee shall be under no obligation to exercise any
of the rights or powers vested in it by this Indenture at the request, order or direction of any of the Holders, pursuant to the provisions of this Indenture, unless such Holders shall have provided to the Trustee security or indemnity satisfactory
to it against the costs, expenses and liabilities which may be incurred therein or thereby;



(g) 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 may be sufficiently evidenced by a Board Resolution;



(h) 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;



(i) the Trustee shall not be deemed to have notice of any Default or Event of Default unless a Responsible Officer of the Trustee has
actual knowledge thereof or unless written notice of such Default or Event of Default is received by the Trustee at the Corporate Trust Office of the Trustee, and such notice references the Securities and this Indenture;



(j) the rights, privileges, protections, immunities and
benefits given to the Trustee, including, without limitation, its right to be indemnified, are extended to, and



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shall be enforceable by, the Trustee in each of its capacities hereunder, and to each agent, custodian 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;



(l) to the extent permitted by the TIA, in no event shall the Trustee be responsible or liable for special,
indirect, or consequential loss or damage of any kind whatsoever (including, but not limited to, loss of profit) irrespective of whether the Trustee has been advised of the likelihood of such loss or damage and regardless of the form of action; and



(m) The Trustee shall not be responsible or
liable for any failure or delay in the performance of its obligations under this Indenture arising out of or caused, directly or indirectly, by circumstances beyond its reasonable control, including, without limitation, acts of God; earthquakes;
fire; flood; terrorism; wars and other military disturbances; sabotage; epidemics; riots; interruptions; loss or malfunctions of utilities, computer (hardware or software) or communication services; accidents; labor disputes; acts of civil or
military authority and governmental action.



Section 9.3. Individual Rights
of Trustee.



The Trustee in its individual or any other
capacity may become the owner or pledgee of Securities and may otherwise deal with the Company or its Affiliates with the same rights it would have if it were not Trustee; provided that the Trustee must comply with Section 9.10 and Section 9.11. Any
Paying Agent, Registrar, Conversion Agent or co-registrar may do the same with like rights.



Section 9.4. Trustees Disclaimer.



The Trustee makes no representation as to the validity or adequacy of this Indenture or the Securities, it shall not be accountable for the Companys use or application of the proceeds from the Securities, it
shall not be responsible for any statement in any registration statement for the Securities under the Securities Act or in any offering document for the Securities, this Indenture or the Securities (other than its certificate of authentication), or
the determination as to which beneficial owners are entitled to receive any notices hereunder.



Section 9.5. Notice of Defaults.



If a Default occurs and if it is known to a Responsible Officer of the Trustee, the Trustee shall give to each Holder notice of the Default within 90 calendar days after it occurs or, if later, within 15 calendar days after it is known to
the Trustee, unless such Default shall have been cured or waived before the giving of such notice. Notwithstanding the preceding sentence, except in the case of a Default described in Section 8.1(a), Section 8.1(b), Section 8.1(d) or Section 8.1(e),
the Trustee may withhold the notice if and so long as the Responsible Officer of the Trustee or a committee of its Responsible Officers or a committee of its executive officers in



51



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good faith determines that withholding the notice is in the interest of the Holders. The preceding sentence shall be in lieu of the proviso to Section 315(b)
of the TIA and such proviso is hereby expressly excluded from this Indenture, as permitted by the TIA.



Section 9.6. Reports by Trustee to Holders.



Within 60 days after each May 15 beginning with the May 15 following the date of this Indenture, the Trustee shall mail to each Holder a brief report dated as of such May 15 that complies with TIA Section 313(a), if
required by such Section 313(a). The Trustee also shall comply with TIA Section 313(b).



A copy of each report at the time of its mailing to Holders shall be filed with the SEC and each securities exchange, if any, on which the Securities are listed. The Company agrees to notify the Trustee promptly
whenever the Securities become listed on any securities exchange and of any delisting thereof.



Section 9.7. Compensation and Indemnity.



The Company agrees to:



(a) pay to the Trustee from time to time such compensation as the Company and the Trustee shall from time to time agree in writing for all services rendered by it hereunder (which compensation shall not be limited (to the extent permitted
by law) by any provision of law in regard to the compensation of a trustee of an express trust);



(b) reimburse the Trustee upon its request for all expenses, disbursements and advances incurred or made by the Trustee in accordance with
any provision of this Indenture (including the reasonable compensation expenses, advances and disbursements of its agents and counsel), except any such expense, disbursement or advance as may be attributable to its own negligence or willful
misconduct; and



(c) fully indemnify the
Trustee or any predecessor Trustee and their agents for, and to hold them harmless against, any and all loss, damage, claim, liability, cost or expense (including attorneys fees and expenses, and taxes (other than taxes based upon, measured by
or determined by the income of the Trustee)) incurred without the Trustees negligent action, negligent failure to act or willful misconduct, arising out of or in connection with the acceptance or administration of this trust, including the
costs and expenses of defending itself against any claim (whether asserted by the Company or any Holder or any other person) or liability in connection with the exercise or performance of any of its powers or duties hereunder, or in connection with
enforcing the provisions of this Section 9.7.



With regard to
its indemnification rights under Section 9.7(c) where the Company has assumed the defense in any action or proceeding, the Trustee shall have the right to employ separate counsel in any such action or proceeding and participate in the investigation
and defense thereof, and the Company shall pay the reasonable fees and expenses of such separate counsel; provided, however, that the Trustee may only employ separate counsel at the expense of the Company if in the reasonable determination of the
Trustee (i) a conflict of interest exists by reason of common representation or (ii) there are legal defenses available to the Trustee that are



52



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different from or are in addition to those available to the Company or (iii) if all parties commonly represented do not agree as to the action (or inaction)
of counsel.



To secure the Companys payment obligations
in this Section 9.7, the Trustee shall have a lien prior to the Securities on all money or property held or collected by the Trustee, except that held in trust to pay the Principal Amount, Redemption Price, Purchase Price, Fundamental Change
Purchase Price or interest and Additional Interest, if any, as the case may be, on particular Securities.



The Companys payment obligations pursuant to this Section 9.7 and the lien referred to in this Section 9.7 shall survive the discharge of this
Indenture and the resignation or removal of the Trustee. When the Trustee incurs expenses after the occurrence of a Default specified in Section 8.1(j) or Section 8.1(k), the expenses including the reasonable charges and expenses of its counsel, are
intended to constitute expenses of administration under any Bankruptcy Law.



Section 9.8. Replacement of Trustee.



The
Trustee may resign by so notifying the Company; provided, however, that no such resignation shall be effective until a successor Trustee has accepted its appointment pursuant to this Section 9.8. The Holders of a majority in aggregate principal
amount of the Securities at the time outstanding may remove the Trustee by so notifying the Trustee and the Company. The Company shall remove the Trustee if:



(a) the Trustee fails to comply with Section 9.10;



(b) the Trustee is adjudged bankrupt or insolvent;



(c) a receiver or public officer takes charge of the Trustee
or its property; or



(d) the Trustee otherwise
becomes incapable of acting.



If the Trustee resigns or is
removed or if a vacancy exists in the office of Trustee for any reason, the Company shall promptly appoint, by resolution of its Board of Directors, a successor Trustee.



A successor Trustee shall deliver a written acceptance of its appointment to the retiring Trustee and to the Company
satisfactory in form and substance to the retiring Trustee and the Company. Thereupon the resignation or removal of the retiring Trustee shall become effective, and the successor Trustee shall have all the rights, powers and duties of the Trustee
under this Indenture. The successor Trustee shall mail a notice of its succession to Holders. The retiring Trustee shall promptly transfer all property held by it as Trustee to the successor Trustee, upon payment of all the retiring Trustees
fees and expenses then due and payable and subject to the lien provided for in Section 9.7.



If a successor Trustee does not take office within 30 days after the retiring Trustee resigns or is removed, the retiring Trustee, the Company or the Holders of a majority in aggregate principal amount of the
Securities at the time outstanding may petition at the expense of the Company any court of competent jurisdiction at the expense of the Company for the appointment of a successor Trustee.



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If the Trustee fails to comply with Section 9.10, any Holder may petition any court of competent
jurisdiction for the removal of the Trustee and the appointment of a successor Trustee.



Section 9.9. Successor Trustee by Merger.



If
the Trustee consolidates with, merges or converts into, or transfers all or substantially all its corporate trust business or assets to, another corporation, the resulting, surviving or transferee corporation without any further act shall be the
successor Trustee.



Section 9.10. Eligibility; Disqualification.



The Trustee and any successor Trustee shall at all times
satisfy the requirements of TIA Sections 310(a)(1) and 310(b). The Trustee (or its parent holding company) shall have a combined capital and surplus of at least $50,000,000 as set forth in its most recent published annual report of condition.
Nothing contained herein shall prevent the Trustee from filing with the Commission the application referred to in the penultimate paragraph of TIA Section 310(b). If at any time the Trustee shall cease to be eligible in accordance with the
provisions of this Section 9.10, it shall resign immediately in the manner and with the effect specified above in this Article.



Section 9.11. Preferential Collection of Claims Against Company.



The Trustee shall comply with TIA Section 311(a), excluding any creditor relationship listed in TIA Section 311(b). A Trustee who has resigned or been
removed shall be subject to TIA Section 311(a) to the extent indicated therein.



ARTICLE X



DISCHARGE
OF INDENTURE



Section 10.1. Discharge of Liability on Securities.



When (i) the Company delivers to the Trustee all outstanding
Securities (other than Securities replaced or repaid pursuant to Section 2.7) for cancellation or (ii) all outstanding Securities have become due and payable (whether at the Stated Maturity or upon acceleration, or on any Redemption Date, Purchase
Date or Fundamental Change Purchase Date, or upon conversion) and the Company deposits with the Paying Agent or Conversion Agent cash or Applicable Stock sufficient to pay all amounts due and owing on all outstanding Securities (other than
Securities replaced pursuant to Section 2.7), and if in either case the Company pays all other sums payable hereunder by the Company, then this Indenture shall, subject to Section 9.7, cease to be of further effect subject to any extension required
by Section 12. to effect settlement upon conversion of the Notes. The Trustee shall join in the execution of a document prepared by the Company acknowledging satisfaction and discharge of this Indenture on demand of the Company accompanied by an
Officers Certificate and Opinion of Counsel and at the cost and expense of the Company.



Section 10.2. Repayment to the Company.



The Trustee and the Paying Agent shall return to the Company upon written request any cash or securities held by them for the payment of any amount with respect to the Securities that



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remains unclaimed for two years, subject to applicable unclaimed property law. After return to the Company, Holders entitled to the cash or securities must
look to the Company for payment as general creditors unless an applicable abandoned property law designates another person and the Trustee and the Paying Agent shall have no further liability to the Holders with respect to such cash or securities
for that period commencing after the return thereof.



ARTICLE
XI



AMENDMENTS



Section 11.1. Without Consent of Holders.



The Company and the Trustee may amend this Indenture or the Securities
without the consent of any Holder to:



(a) add
to the covenants of the Company for the benefit of the Holders of Securities;



(b) surrender any right or power herein conferred upon the Company;



(c) provide for conversion rights of Holders of Securities if any reclassification or change of the Common Stock or any consolidation,
merger or sale of all or substantially all of the Companys assets occurs;



(d) provide for the assumption of the Companys obligations to the Holders of Securities in the case of a merger, consolidation,
conveyance, transfer, sale, lease or other disposition pursuant to Article VII;



(e) increase the Conversion Rate; provided, however, that such increase in the Conversion Rate shall not adversely affect the interests of
the Holders of Securities (after taking into account tax and other consequences of such increase);



(f) comply with the requirements of the SEC in order to effect or maintain the qualification of this Indenture under the TIA;



(g) make any changes or modifications necessary in
connection with the registration of the Securities under the Securities Act as contemplated in the Registration Rights Agreement; provided, however, that such action pursuant to this clause (g) does not, in the good faith opinion of the Board of
Directors (as evidenced by a Board Resolution), adversely affect the interests of the Holders of Securities in any material respect;



(h) cure any ambiguity, correct or supplement any provision herein which may be inconsistent with any other provision herein or which is
otherwise defective, or to make any other provisions with respect to matters or questions arising under this Indenture which the Company may deem necessary or desirable and which shall not be inconsistent with the provisions of this Indenture;
provided, however, that such action pursuant to this clause (h)



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does not, in the good faith opinion of the Board of Directors (as evidenced by a Board Resolution), adversely affect the interests of the Holders of
Securities in any material respect;



(i) to
evidence the succession of another Person to the Company or any other obligor upon the Securities, and the assumption by any such successor of the covenants of the Company or such obligor herein and in the Securities, in each case in compliance with
the provisions of this Indenture;



(j) to
evidence and provide the acceptance of the appointment of a successor trustee hereunder; or



(k) add or modify any other provisions herein with respect to matters or questions arising hereunder which the Company and the Trustee may
deem necessary or desirable and which shall not adversely affect the interests of the Holders of Securities.



Section 11.2. With Consent of Holders.



Except as provided below in this Section 11.2, this Indenture or the Securities may be amended, modified or supplemented, and noncompliance in any particular instance with any provision of this Indenture or the
Securities may be waived, in each case with the written consent or affirmative vote of the Holders of at least a majority of the principal amount of the Securities at the time outstanding.



This Indenture and the Securities may not be modified or amended without the
written consent or the affirmative vote of each Holder of Securities affected thereby, to:



(a) change the maturity of the principal amount of, or the payment date of any installment of interest or Additional Interest, if any, on,
any Security;



(b) reduce the Principal Amount
of, or interest or Additional Interest, if any, on, or the Redemption Price, Purchase Price or Fundamental Change Purchase Price of, any Security;



(c) change the currency of payment of Principal Amount of, or interest or Additional Interest, if any, on, or the Redemption Price,
Purchase Price or Fundamental Change Purchase Price of, any Security from U.S. Dollars;



(d) impair or adversely affect the rate of accrual of interest or Additional Interest, if any, on any Security, or the manner of
calculation thereof;



(e) impair the right of
any Holder to institute suit for the enforcement of any payment or with respect to, or conversion of, any Security;



(f) modify the Companys obligation to maintain a Paying Agent in the Borough of Manhattan, New York City;



(g) impair or adversely affect the conversion rights of the
Holder of the Securities as provided in Article XII;



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(h) impair or adversely affect the purchase rights of the Holders of the Securities as
provided in Article V;



(i) modify the
optional redemption provisions of Article III in a manner adverse to the Holders of the Securities;



(j) reduce the percentage of the Principal Amount of the outstanding Securities the written consent or affirmative vote of whose Holders
is required for any amendment, modification or supplement to this Indenture;



(k) reduce the percentage of the Principal Amount of the outstanding Securities the written consent or affirmative vote of whose Holders is required to rescind an acceleration and its consequences or for any waiver of
any past Default provided for in this Indenture; or



(l) waive any matter set forth in Section 8.4(a), Section 8.4(b), or Section 8.4(c).



It shall not be necessary for the consent of the Holders under this Section 11.2 to approve the particular form of any proposed amendment, but it shall be sufficient if such consent approves the substance thereof.



After an amendment under this Section 11.2 becomes effective,
the Company shall mail to each Holder a notice briefly describing the amendment.



Nothing contained in this Section 11.2 shall impair the ability of the Company and the Trustee to amend this Indenture or the Securities without the consent of any Holder to provide for the assumption of the
Companys obligations to the Holders of Securities in the case of a merger, consolidation, conveyance, transfer, sale, lease or other disposition pursuant to Article VII.



Section 11.3. Compliance with Trust Indenture Act.



Every supplemental indenture executed pursuant to this Article shall comply with the TIA.



Section 11.4. Revocation and Effect of Consents, Waivers and Actions.



Until an amendment, waiver or other action by Holders becomes effective, a
consent thereto by a Holder of a Security hereunder is a continuing consent by the Holder and every subsequent Holder of that Security or portion of the Security that evidences the same obligation as the consenting Holders Security, even if
notation of the consent, waiver or action is not made on the Security. However, any such Holder or subsequent Holder may revoke the consent, waiver or action as to such Holders Security or portion of the Security if the Trustee receives the
notice of revocation before the date the amendment, waiver or action becomes effective. After an amendment, waiver or action becomes effective, it shall bind every Holder.



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Section 11.5. Notation on or Exchange of Securities.



Securities authenticated and delivered after the execution of any supplemental indenture pursuant to this Article XI may,
and shall if required by the Trustee, bear a notation in form approved by the Trustee as to any matter provided for in such supplemental indenture. If the Company shall so determine, new Securities so modified as to conform, in the opinion of the
Trustee and the Board of Directors, to any such supplemental indenture may be prepared and executed by the Company and authenticated and delivered by the Trustee in exchange for outstanding Securities.



Section 11.6. Trustee to Sign Supplemental Indentures.



The Trustee shall sign any supplemental indenture authorized pursuant to this
Article XI if the amendment contained therein does not adversely affect the rights, duties, liabilities or immunities of the Trustee. If it does, the Trustee may, but need not, sign such supplemental indenture. In signing such supplemental indenture
the Trustee shall receive, and (subject to the provisions of Section 9.1) shall be fully protected in relying upon, an Officers Certificate and an Opinion of Counsel stating that such amendment is authorized or permitted by this Indenture.



Section 11.7. Effect of Supplemental Indentures.



Upon the execution of any supplemental indenture under this Article, 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.



ARTICLE XII



CONVERSION



Section 12.1. Conversion Right.



(a) Subject to and upon compliance with the provisions of
this Article XII, a Holder of a Security shall have the right, at such Holders option, to convert all or any portion (if the portion to be converted is $1,000 or an integral multiple of $1,000) of the Principal Amount of such Security into a
number of shares of Common Stock equal to the product of (x) the Conversion Rate in effect on the date of conversion times (y) the quotient of the Principal Amount at Issuance of the Security or portion thereof surrendered for conversion divided by
1,000:



| | (i) | At any time prior to Stated Maturity unless such Security has been previously redeemed or repurchased by the Company; or
| | --- | ------------------------------------------------------------------------------------------------------------------------



| | (ii) | as provided in clause (b) of this Section 12.1.
| | ---- | -----------------------------------------------



With respect to any conversion of a Security during a Registration Default Period following satisfaction of any of the conditions to conversion described in this
Indenture (and during the prescribed time periods in respect thereof), a Holder shall be entitled to, 103% of the number



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of shares of Common Stock that the Holder would have otherwise been entitled to upon conversion.



(b) (i) In the event that:



| | (A) | the Company distributes to all holders of its Common Stock rights or warrants entitling them (for a period expiring within 60 days of the Record Date for such distribution) to
subscribe for or purchase Common Stock at a price per share of Common Stock less than the Closing Sale Price of the Common Stock on the Business Day immediately preceding the announcement of such distribution;
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (B) | the Company distributes to all holders of its Common Stock cash or other assets, debt securities or rights or warrants to purchase its securities, including the declaration of any
cash dividends, payable quarterly or otherwise, where the Fair Market Value (as determined by the Board of Directors) of such distribution per share of Common Stock exceeds 10% of the Closing Sale Price of the Common Stock on the Business Day
immediately preceding the date of declaration of such distribution; or
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (C) | a Fundamental Change occurs,
| | --- | ----------------------------



then, in each case, the Securities may be surrendered for conversion at any time on and after the date that the Company gives notice to the Holders of such right, which shall be, in the case of (A) or (B), not less
than 15 Business Days prior to the Ex-Dividend Time for such distribution, or, in the case of (C), within 15 Business Days after the occurrence of the Fundamental Change, until 5:00 p.m., New York City time, on the earlier of the Business Day
immediately preceding the Ex-Dividend Time and the date the Company announces that such distribution shall not take place in the case of (A) or (B), or within 20 Business Days of the Companys delivery of the notice of the Fundamental Change in
the case of (C); provided, however, that in the case of (A) or (B), a Holder of Securities may not surrender Securities for conversion if the Holder shall otherwise participate in such distribution without conversion.



| | (ii) | In addition, in the event that the Company consolidates with or merges into another corporation, or is a party to a binding share exchange pursuant to which the
Common Stock would be converted into cash, securities or other property as set forth in Section 12.4, then the Securities may be surrendered for conversion at any time from and after the date which is 15 calendar days prior to the date announced by
the Company as the anticipated effective
| | ---- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| | time of such transaction until 15 calendar days after the actual date of such transaction.
| | ------------------------------------------------------------------------------------------



(c) Notwithstanding the foregoing, a Security in respect of
which a Holder has delivered a Fundamental Change Purchase Notice, as the case may be, exercising such Holders right to require the Company to repurchase such Security may be converted only if such Fundamental Change Purchase Notice is
withdrawn in accordance with Section 4.2(b) or Section 5.2(b) prior to 5:00 p.m., New York City time, on the Business Day immediately preceding such Purchase Date or Fundamental Change Purchase Date.



Section 12.2. Conversion Procedures; Conversion Rate; Fractional Shares.



(a) Each Security shall be convertible at the office of
the Conversion Agent into fully paid and nonassessable shares of Common Stock (calculated to the nearest 1/10,000th of a share).



(b) The Conversion Agent shall notify the Company when it receives a Conversion Notice. The Company shall determine the number of shares
of Common Stock and/or the amount of cash, if any, that the Holder that submitted the Conversion Notice is entitled to receive upon surrender of the Securities covered by that Conversion Notice. A certificate for the number of full shares of Common
Stock into which the Securities are converted (and cash in lieu of fractional shares) shall be delivered to such Holder, assuming all of the other requirements have been satisfied by such Holder, as soon as practicable. Notwithstanding the
foregoing, the Company shall not be required to deliver certificates for Common Stock while the stock transfer books for such stock or the security register are duly closed for any purpose, but certificates for Common Stock shall be issued and
delivered as soon as practicable after the opening of such books or security register. No cash payment of accrued and unpaid interest or Additional Interest shall be paid by the Company on a converted Security, except as described in Section 12.9.
Accrued and unpaid interest and Additional Interest, if any, shall be deemed to be paid in full with the shares of Common Stock issued or cash paid upon conversion, rather than deemed cancelled, extinguished or forfeited.



Except as described in Section 12.9, the Company will not make any payment in
cash or Common Stock or other adjustment for accrued and unpaid interest or Additional Interest on any Securities when they are converted. The Companys delivery to the Holder of the full number of shares of Common Stock into which the Security
is convertible, together with any cash payment for such Holders fractional shares, shall be deemed to satisfy the Companys obligation to pay the Principal Amount of the Security and to satisfy its obligation to pay accrued and unpaid
interest and Additional Interest, if any through the conversion date. As a result, accrued interest, and Additional Interest are deemed paid in full rather than cancelled, extinguished or forfeited. Notwithstanding the foregoing, accrued interest
and Additional Interest, if any, will be payable upon any conversion of Securities made concurrently with or after acceleration of the Securities following an Event of Default.



If a Holder has submitted any or all of its Securities for repurchase, a Holders conversion rights on the Securities
so subject to repurchase shall expire at 5:00 p.m., New York City time, on the Business Day immediately preceding the Fundamental Change Purchase Date. Notwithstanding the foregoing, a Security in respect of which a Holder has delivered a



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Fundamental Change Purchase Notice exercising such Holders right to require the Company to repurchase such Security may be converted only if such
Fundamental Change Purchase Notice is withdrawn in accordance with Section 4.2(b) prior to 5:00 p.m., New York City time, on the Business Day immediately preceding the Fundamental Change Purchase Date.



(c) Before any Holder shall be entitled to convert the same
into Common Stock, such Holder shall, in the case of Global Securities, comply with the Applicable Procedures of the Depositary in effect at that time, and in the case of Certificated Securities, surrender such Securities, duly endorsed to the
Company or in blank, at the office of the Conversion Agent, and shall give written notice to the Company at said office or place in the form of the Conversion Notice attached to the Security (the Conversion Notice) that such
Holder elects to convert the same and shall state in writing therein the Principal Amount at issuance of Securities to be converted (in whole or in part so long as the Principal Amount to be converted is in multiples of $1,000) and the name or names
(with addresses) in which such Holder wishes the certificate or certificates for Common Stock to be issued.



Before any such conversion, a Holder also shall pay all funds required, if any, relating to interest or Additional Interest, if any, on the Securities, as
provided in Section 12.9 and all taxes or duties, if any, as provided in Section 12.8.



If more than one Security shall be surrendered for conversion at one time by the same Holder, the number of full shares of Common Stock that shall be deliverable upon conversion shall be computed on the basis of the
aggregate Principal Amount at issuance of the Securities (or specified portions thereof to the extent permitted thereby) so surrendered.



If shares of Common Stock to be issued upon conversion of a Restricted Security is to be issued in the name of a Person other than the Holder of such
Restricted Security, such Holder shall deliver to the Conversion Agent a certification in substantially the form set forth in a Transfer Certificate dated the date of surrender of such Restricted Security and signed by such Holder, as to compliance
with the restrictions on transfer applicable to such Restricted Security. The Company shall not be required to issue Common Stock upon conversion of any such Restricted Security to a Person other than the Holder if such Restricted Security is not so
accompanied by a properly completed certification, and the Registrar shall not be required to register Common Stock upon conversion of any such Restricted Security in the name of a Person other than the Holder if such Restricted Security is not so
accompanied by a properly completed certification.



(d) A Security shall be deemed to have been converted immediately prior to 5:00 p.m., New York City time, on the date on which all of the conversion requirements set forth in Section 12.2(b) have been satisfied, and the person or persons
entitled to receive the Common Stock issuable upon such conversion shall be treated for all purposes as the record Holder or Holders of such Common Stock as of 5:00 p.m., New York City time, on such date.



(e) In case any Certificated Security shall be surrendered
for partial conversion, the Company shall execute and the Trustee shall authenticate and deliver to or upon the written order of the Holder of the Security so surrendered, without charge to such Holder (subject to the provisions of Section 12.8), a
new Security or Securities in authorized



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denominations in an aggregate principal amount equal to the unconverted portion of the surrendered Certificated Securities.



Section 12.3. Adjustment of Conversion Rate.



The Conversion Rate shall be adjusted from time to time as follows:



(a) In case the Company shall, at any time or
from time to time while any of the Securities are outstanding, pay a dividend or make a distribution in Common Stock to all or substantially all holders of its outstanding Common Stock, then the Conversion Rate in effect immediately prior to the
close of business on the Record Date fixed for the determination of stockholders entitled to receive such dividend or other distribution 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 received had such Security been converted immediately prior to the happening of such event as well as such additional shares it would have received as a result of such event. Such
adjustment shall become effective immediately prior to the opening of business on the day following the Record Date fixed for such determination. If any dividend or distribution of the type described in this Section 12.3(a) is declared but not so
paid or made, the Conversion Rate shall again be adjusted to the Conversion Rate which would then be in effect if such dividend or distribution had not been declared.



(b) In case the Company shall, at any time or from time to time while any of the Securities are outstanding,
subdivide its outstanding shares of Common Stock into a greater number of Common Stock or combine its outstanding shares of Common Stock into a smaller number of Common Stock, then the Conversion Rate in effect immediately prior to the close of
business on the day upon which such subdivision or combination becomes effective 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 received had such Security been converted immediately prior to the happening of such event as well as such additional shares as it would have received as a result of such event. Such adjustment shall become effective immediately prior to
the opening of business on the day following the day upon which such subdivision or combination becomes effective.



(c) In case the Company shall, at any time or from time to time while any of the Securities are outstanding, issue rights or warrants for
a period expiring within 60 days (other than any rights or warrants referred to in Section 12.3(d)) to all or substantially all holders of its outstanding Common Stock entitling them to subscribe for or purchase Common Stock (or securities
convertible into or exchangeable or exercisable for Common Stock), at a price per share of Common Stock (or having a conversion, exchange or exercise price per share of Common Stock) less than the Closing Sale Price of the Common Stock on the
Business Day immediately preceding the date of announcement of such issuance (treating the conversion, exchange or exercise price per share of Common Stock of the securities convertible, exchangeable or exercisable into Common Stock as equal to (x)
the sum of (i) the price for a unit of the security convertible into or exchangeable or exercisable for Common Stock and (ii) any additional consideration initially payable upon the conversion of or exchange or exercise for such security into Common
Stock divided by (y) the number of shares of Common Stock initially underlying such convertible, exchangeable or exercisable



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security), then the Conversion Rate shall be adjusted by multiplying the Conversion Rate in effect at the opening of business on the date after such date of
announcement by a fraction:



| | (i) | the numerator of which shall be the number of shares of Common Stock outstanding at the close of business on the date of announcement, plus the total number of additional shares of
Common Stock so offered for subscription or purchase (or into which the convertible, exchangeable or exercisable securities so offered are convertible, exchangeable or exercisable); and
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | the denominator of which shall be the number of shares of Common Stock outstanding on the close of business on the date of announcement, plus the number of shares of Common Stock
(or convertible, exchangeable or exercisable securities) which the aggregate offering price of the total number of shares of Common Stock (or convertible, exchangeable or exercisable securities) so offered for subscription or purchase (or the
aggregate conversion, exchange or exercise price of the convertible, exchangeable or exercisable securities so offered) would purchase at such Closing Sale Price of the Common Stock.
| | ---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



Such adjustment shall become effective immediately prior to the opening of
business on the day following the Record Date for such determination. To the extent that shares of Common Stock (or securities convertible, exchangeable or exercisable into shares of Common Stock) are not delivered pursuant to such rights or
warrants, upon the expiration or termination of such rights or warrants, the Conversion Rate shall be readjusted to the Conversion Rate which would then be in effect had the adjustments made upon the issuance of such rights or warrants been made on
the basis of the delivery of only the number of shares of Common Stock (or securities convertible, exchangeable or exercisable into shares of Common Stock) actually delivered. In the event that such rights or warrants are not so issued, the
Conversion Rate shall again be adjusted to be the Conversion Rate which would then be in effect if the Record Date fixed for the determination of stockholders entitled to receive such rights or warrants had not been fixed. In determining whether any
rights or warrants entitle the holders to subscribe for or purchase shares of Common Stock at less than such Closing Sale Price, and in determining the aggregate offering price of such shares of Common Stock, there shall be taken into account any
consideration received for such rights or warrants, the value of such consideration if other than cash, to be determined by the Board of Directors.



(d) (A) In case the Company shall, at any time or from time to time while any of the Securities are outstanding, by dividend or otherwise,
distribute to all or substantially all holders of its outstanding shares of Common Stock (including any such distribution made in connection with a consolidation or merger in which the Company is the continuing corporation and the shares of Common
Stock are not changed or exchanged), shares of its capital stock, evidences of its Indebtedness or other assets, including securities, but excluding (i) dividends or distributions of Common Stock referred to in Section 12.3(a),



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(ii) any rights or warrants referred to in Section 12.3(c), (iii) dividends and distributions paid exclusively in cash referred to in this Section 12.3(d)
and (iv) dividends and distributions of stock, securities or other property or assets (including cash) in connection with the reclassification, change, merger, consolidation, statutory share exchange, combination, sale or conveyance to which Section
12.4 applies (such capital stock, evidence of its indebtedness, other assets or securities being distributed hereinafter in this Section 12.3(d) called the Distributed Assets), then, in each such case, subject to paragraphs (D)
and (E) of this Section 12.3(d), the Conversion Rate shall be adjusted by multiplying the Conversion Rate in effect immediately prior to the close of business on the Record Date with respect to such distribution by a fraction:



| | (i) | the numerator of which shall be the Current Market Price; and
| | --- | -------------------------------------------------------------



| | (ii) | the denominator of which shall be such Current Market Price of the Common Stock, less the Fair Market Value on such date of the portion of the distributed assets so distributed
applicable to one share of Common Stock (determined on the basis of the number of shares of Common Stock outstanding on the Record Date) on such date.
| | ---- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



Such adjustment shall become effective immediately prior to the opening of business on the day following the Record Date
for such distribution. 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.



| | (B) | If the Board of Directors determines the Fair Market Value of any distribution for purposes of this Section 12.3(d) by reference to the actual or when issued trading market for any
distributed assets comprising all or part of such distribution, it must in doing so consider the prices in such market over the same period (the Reference Period) used in computing the Current Market Price pursuant to Section
12.3(g) to the extent possible, unless the Board of Directors determines in good faith that determining the Fair Market Value during the Reference Period would not be in the best interest of the Holders.
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (C) | In the event any such distribution consists of shares of capital stock of, or similar equity interests in, one or more of the Companys Subsidiaries (a
Spin-Off), the Fair Market Value of the securities to be distributed shall equal the average of the Closing Sale Prices of such securities on the principal securities market on which such securities are traded for the five
consecutive Trading Days commencing on and including the sixth Trading Day of those securities after the effectiveness of the Spin-Off, and the Current Market Price shall be measured for the same period. In the event, however, that an underwritten
initial public offering of the securities in the Spin-Off occurs simultaneously with the Spin-Off, Fair Market Value of the securities distributed in the Spin-Off shall mean the initial public offering price of such securities and the Current Market
Price shall mean the Closing Sale Price for the Common Stock on the same Trading Day.
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| | (D) | Rights or warrants distributed by the Company to all holders of its outstanding shares of Common Stock entitling them to subscribe for or purchase shares of Equity Interest (either
initially or under certain circumstances), which rights or warrants, until the occurrence of a specified event or events (Trigger Event), (x) are deemed to be transferred with such shares of Common Stock, (y) are not exercisable
and (z) are also issued in respect of future issuances of Common Stock shall be deemed not to have been distributed for purposes of this Section 12.3(d) (and no adjustment to the Conversion Rate under this Section 12.3(d) shall be required) until
the occurrence of the earliest Trigger Event. If such right or warrant is subject to subsequent events, upon the occurrence of which such right or warrant shall become exercisable to purchase different distributed assets, evidences of indebtedness
or other assets, or entitle the holder to purchase a different number or amount of the foregoing or to purchase any of the foregoing at a different purchase price, then the occurrence of each such event shall be deemed to be the date of issuance and
Record Date with respect to a new right or warrant (and a termination or expiration of the existing right or warrant without exercise by the holder 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 resulted in an adjustment to the Conversion Rate under this Section 12.3(d):
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (i) | 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 purchase price received by a holder of shares 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 purchase; and
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | in the case of such rights or warrants which shall have expired or been terminated without exercise, the Conversion Rate shall be readjusted as if such rights and warrants had never
been issued.
| | ---- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (E) | For purposes of this Section 12.3(d) and Section 12.3(a), Section 12.3(b) and Section 12.3(c), any dividend or distribution to which this Section 12.3(d) is applicable that also
includes (x) shares of Common Stock, (y) a subdivision or combination of Common Stock to which Section 12.3(b) applies or (z) rights or warrants to subscribe for or purchase shares of Common Stock to which Section 12.3(c) applies (or any combination
thereof), shall be deemed instead to be:
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (i) | a dividend or distribution of the evidences of indebtedness, assets, shares of capital stock, rights or warrants, other than such shares of Common
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------



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| | Stock, such subdivision or combination or such rights or warrants to which Section 12.3(a), Section 12.3(b) and Section 12.3(c) apply, respectively (and any
Conversion Rate adjustment required by this Section 12.3(d) with respect to such dividend or distribution shall then be made), immediately followed by
| | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | a dividend or distribution of such shares of Common Stock, such subdivision or combination or such rights or warrants (and any further Conversion Rate adjustment required by Section
12.3(a), Section 12.3(b) and Section 12.3(c) with respect to such dividend or distribution shall then be made), except:
| | ---- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (1) | the Record Date of such dividend or distribution shall be substituted as (i) the date fixed for the determination of stockholders entitled to receive such dividend or other
distribution, Record Date fixed for such determinations and Record Date within the meaning of Section 12.3(a), (ii) the day upon which such subdivision or combination becomes effective within the meaning of
Section 12.3(b), and (iii) as the Record Date fixed for the determination of the stockholders entitled to receive such rights or warrants and such Record Date within the meaning of Section 12.3(c); and
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (2) | any reduction or increase in the number of shares of Common Stock resulting from such subdivision or combination shall be disregarded in connection with such dividend or
distribution.
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



(e) In case the
Company shall, at any time or from time to time after the initial Issue Date while any of the Securities are outstanding, by dividend or otherwise, distribute to all or substantially all holders of its outstanding shares of Common Stock, cash
(including any quarterly cash dividends, but excluding any cash that is distributed upon a reclassification, change, merger, consolidation, statutory share exchange, combination, sale or conveyance to which Section 12.4 applies or as part of a
distribution referred to in Section 12.3(d)), then, and in each case, immediately after the close of business on such date, the Conversion Rate shall be adjusted by multiplying the Conversion Rate in effect immediately prior to the close of business
of such Record Date by a fraction:



| | (A) | the numerator of which shall be equal to the Current Market Price on such date; and
| | --- | -----------------------------------------------------------------------------------



| | (B) | the denominator of which shall be equal to the Current Market Price on the Record Date, less an amount equal to the quotient of (x) the aggregate amount of such cash distribution
and (y) the number of shares of Common Stock outstanding on the Record Date.
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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Such adjustment shall become effective immediately prior to the opening of business on the day following
the Record Date for such distribution. In the event that such distribution is not so made, the Conversion Rate shall again be adjusted to be the Conversion Rate which would then be in effect if such distribution had not been declared.



Notwithstanding the foregoing, adjustments to the conversion rate resulting
from any quarterly cash dividends may not cause the conversion rate (as adjusted for any other adjustment) to exceed the quotient obtained by dividing the principal amount of a note by the last reported sale price of our common stock on the cover
page of this offering memorandum.



(f) In case
a tender offer or exchange offer (other than as part of a stock option exchange offer) made by the Company or any of its Subsidiaries for all or any portion of the Common Stock shall expire, then and in each such case, immediately prior to the
opening of business on the day after the date of the last time (the Expiration Time) tenders or exchanges could have been made pursuant to such tender offer or exchange offer, the Conversion Rate shall be adjusted 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 date of the Expiration Time by a fraction:



| | (A) | the numerator of which shall be the sum of (x) the product of (i) the number of shares of Common Stock outstanding (excluding any tendered or exchanged shares) at the Expiration
Time and (ii) the Current Market Price of the Common Stock at the Expiration Time, and (y) the Fair Market Value of the aggregate consideration payable to stockholders based on acceptance (up to any maximum specified in the terms of the tender offer
or exchange offer) of all shares validly tendered and not withdrawn as of the Expiration Time; and
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (B) | the denominator of which shall be the product of the number of shares of Common Stock outstanding (including any tendered or exchanged shares) at the Expiration Time and the Current
Market Price of the Common Stock at the Expiration Time.
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



Such adjustment (if any) shall become effective immediately prior to the opening of business on the day following the Expiration Time. In the event that the Company is obligated to purchase shares pursuant to any such tender offer or
exchange offer, but the Company is permanently prevented by applicable law from effecting any such purchases or all or a portion of such purchases are rescinded, the Conversion Rate shall again be adjusted to be the Conversion Rate which would then
be in effect if such (or such portion of the) tender offer or exchange offer had not been made. If the application of this Section 12.3(e) to any tender offer or exchange offer would result in a decrease in the Conversion Rate, no adjustment shall
be made for such tender offer under this Section 12.3(e).



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To the extent the Company has a rights plan in effect upon the conversion of the Securities, if Holders
of the Securities exercising the right of conversion attaching after the date the rights separate from the underlying Common Stock are not entitled to receive the rights that would otherwise be attributable to the Common Stock received upon
conversion, the Conversion Rate shall be adjusted as though the rights were being distributed to holders of Common Stock on the date of such separation. If such an adjustment is made and the rights are later redeemed, invalidated or terminated, then
a corresponding reversing adjustment shall be made to the Conversion Rate on an equitable basis.



(g) For purposes of this Article XII, the following terms shall have the meanings indicated:



Current Market Price on any date means the average of the
daily Closing Sale Prices per share of Common Stock for the ten consecutive Trading Days immediately prior to such date; provided, however, that if:



| | (i) | the ex date (as hereinafter defined) for any event (other than the issuance or distribution requiring such computation) that requires an adjustment to the Conversion
Rate pursuant to Section 12.3(a), Section 12.3(b), Section 12.3(c), Section 12.3(d), Section 12.3(e) or Section 12.3(f) occurs during such ten consecutive Trading Days, the Closing Sale Price for each Trading Day prior to the ex date for
such other event shall be adjusted by multiplying such Closing Sale Price by the same fraction by which the Conversion Rate is so required to be adjusted as a result of such other event;
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | the ex date for any event (other than the issuance or distribution requiring such computation) that requires an adjustment to the Conversion Rate pursuant to Section
12.3(a), Section 12.3(b), Section 12.3(c), Section 12.3(d), Section 12.3(e) or Section 12.3(f) occurs on or after the ex date for the issuance or distribution requiring such computation and prior to the day in question, the Closing Sale
Price for each Trading Day on and after the ex date for such other event shall be adjusted by multiplying such Closing Sale Price by the reciprocal of the fraction by which the Conversion Rate is so required to be adjusted as a result of
such other event; and
| | ---- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (iii) | the ex date for the issuance or distribution requiring such computation is prior to the day in question, after taking into account any adjustment required pursuant to
clause (1) or (2) of this proviso, the Closing Sale Price for each Trading Day on or after such ex date shall be adjusted by adding thereto the amount of any cash and the Fair Market Value (as determined by the Board of Directors in a
manner consistent with any determination of such value for purposes of Section 12.3(d), Section 12.3(e) or Section 12.3(f)) of the evidences of Indebtedness, shares of capital stock or assets being distributed applicable to one share of Common Stock
as of the close of business on the day before such ex date.
| | ----- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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For purposes of any computation under Section 12.3(e), if the ex date for any event (other than the tender
offer requiring such computation) that requires an adjustment to the Conversion Rate pursuant to Section 12.3(a), Section 12.3(b), Section 12.3(c), Section 12.3(d), Section 12.3(e) or Section 12.3(f) occurs on or after the Expiration Time for the
tender or exchange offer requiring such computation and prior to the day in question, the Closing Sale Price for each Trading Day on and after the ex date for such other event shall be adjusted by multiplying such Closing Sale Price by
the reciprocal of the fraction by which the Conversion Rate is so required to be adjusted as a result of such other event. For purposes of this paragraph, the term ex date, when used:



| | (i) | with respect to any issuance or distribution, means the first date on which the Common Stock trade regular way on the relevant exchange or in the relevant market from which the
Closing Sale Price was obtained without the right to receive such issuance or distribution;
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | with respect to any subdivision or combination of Common Stock, means the first date on which the Common Stock trade regular way on such exchange or in such market after the time at
which such subdivision or combination becomes effective; and
| | ---- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (iii) | with respect to any tender offer or exchange offer, means the first date on which the Common Stock trade regular way on such exchange or in such market after the Expiration Time of
such offer.
| | ----- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



Notwithstanding the foregoing,
whenever successive adjustments to the Conversion Rate are called for pursuant to this Section 12.3, such adjustments shall be made to the Current Market Price as may be necessary or appropriate to effectuate the intent of this Section 12.3 and to
avoid unjust or inequitable results as determined in good faith by the Board of Directors.



Fair Market Value means the amount which a willing buyer would pay a willing seller in an arms length transaction (as determined by the Board of Directors, whose determination shall be made in
good faith and, absent manifest error, shall be final and binding on Holders of the Securities).



Record Date means, with respect to any dividend, distribution or other transaction or event in which the holders of Common Stock have
the right to receive any cash, securities or other property or in which the Common Stock (or other applicable security) is exchanged for or converted into any combination of cash, securities or other property, the date fixed for determination of
stockholders entitled to receive such cash, securities or other property (whether such date is fixed by the Board of Directors or by statute, contract or otherwise).



(h) The Company shall be entitled to make such additional adjustments in the Conversion Rate, in addition to
those required by Section 12.3(a), Section 12.3(b), Section 12.3(c), Section 12.3(d), Section 12.3(e) or Section 12.3(f) if the Board of Directors determines that it is advisable, subject to compliance with Nasdaq Marketplace Rule 4350(i), in order
that any dividend or distribution of Common Stock, any subdivision, reclassification or combination of Common Stock or any issuance of rights or warrants referred to above shall not be taxable to the holders of Common Stock for United States federal
income tax purposes.



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(i) To the extent permitted by applicable law, the Company may, from time to time,
increase the Conversion Rate by any amount for any period of time if such period is at least 20 calendar days, the increase is irrevocable during the period and the Board of Directors, in good faith and absent manifest error, determines that such
increase would be in the best interest of the Company, subject to compliance with Nasdaq Marketplace Rule 4350(i). Whenever the Conversion Rate is increased pursuant to the preceding sentence or clause (h) above, the Company shall mail to the
Trustee and each Holder at the address of such Holder as it appears in the register of the Securities maintained by the Registrar, at least 15 calendar days prior to the date the increased Conversion Rate takes effect, a notice of the increase
stating the increased Conversion Rate and the period during which it shall be in effect.



(j) In any case in which this Section 12.3 shall require that any adjustment be made effective as of or retroactively immediately
following a Record Date, the Company may elect to defer (but only for five Trading Days following the filing of the notice referred to in Section 12.5) issuing to the Holder of any Securities converted after such Record Date the Common Stock
issuable upon such conversion over and above the Common Stock issuable upon such conversion on the basis of the Conversion Rate prior to adjustment; provided, however, that the Company shall deliver to such Holder a due bill or other appropriate
instrument evidencing such Holders right to receive such additional Common Stock upon the occurrence of the event requiring such adjustment.



(k) All calculations under this Section 12.3 shall be made to the nearest cent or one-hundredth of a share, with one-half cent and 0.005
of a share, respectively, being rounded upward. Notwithstanding any other provision of this Section 12.3, the Company shall not be required to make any adjustment of the Conversion Rate unless such adjustment would require an increase or decrease of
at least 1% in the Conversion Rate as last adjusted. Any lesser adjustment shall be carried forward and shall be made at the time of and together with the next subsequent adjustment which, together with any adjustment or adjustments so carried
forward, shall amount to an increase or decrease of at least 1% in the Conversion Rate as last adjusted. Any adjustments under this Section 12.3 shall be made successively whenever an event requiring such an adjustment occurs.



(l) In the event that at any time, as a result of an
adjustment made pursuant to this Section 12.3, the Holder of any Securities thereafter surrendered for conversion shall become entitled to receive any shares of Applicable Stock of the Company other than Common Stock into which the Securities
originally were convertible, the Conversion Rate of such other shares so receivable upon conversion of any such Security shall be subject to adjustment from time to time in a manner and on terms as nearly equivalent as practicable to the provisions
with respect to Common Stock contained in subparagraphs (a) through (j) of this Section 12.3, and the provision of Section 12.1, Section 12.2 and Section 12.4 through Section 12.9 with respect to the Common Stock shall apply on like or similar terms
to any such other shares and the determination of the Board of Directors as to any such adjustment shall be conclusive.



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(m) No adjustment shall be made pursuant to this Section 12.3 if the effect thereof would
be to reduce the Conversion Price below the par value (if any) of the Common Stock.



Section 12.4. Consolidation or Merger of the Company.



If any of the following events occurs, namely:



(a) any reclassification or change of the outstanding shares of Common Stock (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);



(b) any merger, consolidation,
statutory share exchange or combination of the Company with another Person as a result of which holders of Common Stock shall be entitled to receive stock, securities or other property or assets (including cash) with respect to or in exchange for
such Common Stock; or



(c) any sale or
conveyance of all or substantially all the properties and assets of the Company as, or substantially as, an entirety to any other Person as a result of which holders of Common Stock shall be entitled to receive stock, securities or other property or
assets (including cash) with respect to or in exchange for such Common Stock;



the Company or the successor or purchasing Person, as the case may be, shall execute with the Trustee a supplemental indenture (which shall comply with the Trust Indenture Act as in force at the date of execution of such supplemental
indenture, if such supplemental indenture is then required to so comply) providing that such Securities shall be convertible into the kind and amount of shares of stock and other securities or property or assets (including cash) which such Holder
would have been entitled to receive upon such reclassification, change, merger, consolidation, statutory share exchange, combination, sale or conveyance had such Securities been converted into Common Stock immediately prior to such reclassification,
change, merger, consolidation, statutory share exchange, combination, sale or conveyance assuming such holder of Common Stock did not exercise its rights of election, if any, as to the kind or amount of securities, cash or other property receivable
upon such merger, consolidation, statutory share exchange, sale or conveyance (provided, that if the kind or amount of securities, cash or other property receivable upon such merger, consolidation, statutory share exchange, sale or conveyance is not
the same for each share of Common Stock in respect of which such rights of election shall not have been exercised (Non-Electing Share), then for the purposes of this Section 12.4, the kind and amount of securities, cash or other
property receivable upon such merger, consolidation, statutory share exchange, sale or conveyance for each Non-Electing Share shall be deemed to be the kind and amount so receivable per share by a plurality of the Non-Electing Shares). Such
supplemental indenture shall provide for adjustments which shall be as nearly equivalent as may be practicable to the adjustments provided for in this Article XII. If, in the case of any such reclassification, change, merger, consolidation,
statutory share exchange, combination, sale or conveyance, the stock or other securities and assets receivable thereupon by a holder of Common Stock includes shares of stock or other securities and assets of a Person other than the successor or
purchasing Person, as the case may be, in such reclassification, change, merger, consolidation, statutory share exchange, combination, sale or conveyance, then such supplemental indenture shall also be executed by such other Person and shall contain
such



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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 Company shall cause notice of the execution
of such supplemental indenture to be mailed to each Holder, at the address of such Holder as it appears on the register of the Securities maintained by the Registrar, within 20 days after execution thereof. Failure to deliver such notice shall not
affect the legality or validity of such supplemental indenture.



The above provisions of this Section 12.4 shall similarly apply to successive reclassifications, mergers, consolidations, statutory share exchanges, combinations, sales and conveyances.



If this Section 12.4 applies to any event or occurrence, Section 12.3 shall
not apply.



Section 12.5. Notice of Adjustment.



Whenever an adjustment in the Conversion Rate with respect to the Securities
is required:



(a) the Company shall forthwith
place on file with the Trustee and any Conversion Agent for such securities a certificate of the Chief Financial Officer of the Company, stating the adjusted Conversion Rate determined as provided herein and setting forth in reasonable detail such
facts as shall be necessary to show the reason for and the manner of computing such adjustment; and



(b) a notice stating that the Conversion Rate has been adjusted and setting forth the adjusted Conversion Rate shall forthwith be given by
the Company or, upon a Company Request, by the Trustee in the name and at the expense of the Company, to each Holder in the manner provided in Section 14.2. Any notice so given shall be conclusively presumed to have been duly given, whether or not
the Holder receives such notice.



Section 12.6. Notice in Certain
Events.



In case of:



(a) a consolidation or merger to which the Company is a
party and for which approval of any stockholders of the Company is required, or of the sale or conveyance to another Person or entity or group of Persons or entities acting in concert as a partnership, limited partnership, syndicate or other group
(within the meaning of Rule 13d-3 under the Exchange Act) of all or substantially all of the property and assets of the Company; or



(b) the voluntary or involuntary dissolution, liquidation or winding up of the Company; or



(c) any action triggering an adjustment of the Conversion
Rate referred to in clauses (x) or (y) below;



then, in each
case, the Company shall cause to be filed with the Trustee and the Conversion Agent, and shall cause to be given to the Holders of the Securities in the manner provided in Section 14.2, at least 15 days prior to the applicable date hereinafter
specified, a notice stating:



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(x) the date on which a record is to be taken for the purpose of any distribution or
grant of rights or warrants triggering an adjustment to the Conversion Rate pursuant to this Article XII, or, if a record is not to be taken, the date as of which the holders of record of Common Stock entitled to such distribution, rights or
warrants are to be determined; or



(y) the
date on which any reclassification, consolidation, merger, sale, conveyance, dissolution, liquidation or winding up triggering an adjustment to the Conversion Rate pursuant to this Article XII is expected to become effective, and the date as of
which it is expected that holders of Common Stock of record shall be entitled to exchange their shares of Common Stock for securities or other property deliverable upon such reclassification, consolidation, merger, sale, conveyance, dissolution,
liquidation or winding up.



Failure to give such notice or any
defect therein shall not affect the legality or validity of the proceedings described in Section 12.6(a), Section 12.6(b) or Section 12.6(c).



Section 12.7. Company To Reserve Stock; Registration; Listing.



(a) The Company shall, prior to issuance of any Securities hereunder, and from time to time as may be necessary, reserve and keep
available, free from preemptive rights, out of its authorized but unissued Common Stock, for the purpose of effecting the conversion of the Securities, such number of its duly authorized Common Stock as shall from time to time be sufficient to
effect the conversion of all Securities then outstanding into such Common Stock at any time (assuming that, at the time of the computation of such number of Common Stock, all such Securities would be held by a single Holder). The Company covenants
that all Common Stock which may be issued upon conversion of Securities shall upon issue be fully paid and nonassessable and free from all liens and charges and, except as provided in Section 12.8, taxes with respect to the issue thereof.



(b) Except with respect to shares issued upon
conversion of a Transfer Restricted Security prior to the second anniversary of the initial Issue Date, if any shares of Applicable Stock which would be issuable upon conversion of Securities hereunder (including, without limitation, in connection
with any transaction referred to in Section 12.4) require registration with or approval of any governmental authority before such shares may be issued upon such conversion, the Company shall use its reasonable best efforts to cause such shares to be
duly registered or approved, as the case may be, or to cause such shares not to be Transfer Restricted Securities. In addition, in connection with any transaction referred to in Section 12.4, the Company and any parent company of the Company
required to issue Applicable Stock upon conversion of a Note shall take such actions as are required to entitle the Company or such parent company, as the case may be, to rely on Section 3(a)(9) of the Securities Act in connection with conversion of
the Securities without extending any holding periods under Rule 144 or otherwise permit such Applicable Stock issued upon conversion of the Securities to be resold without requiring registration thereof under the Securities Act. The Company further
covenants that so long as the Common Stock shall be quoted on the Nasdaq National Market system, the Company shall use its reasonable best efforts, if permitted by the rules of the Nasdaq National Market system, to keep so quoted all Common Stock
issuable



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upon conversion of the Securities, and the Company shall use its reasonable best efforts to list or obtain approval for the quotation of the Common Stock to
be delivered upon conversion of the Securities prior to such delivery upon any other national securities exchange or quotation system upon which the outstanding Common Stock is listed or quoted at the time of such delivery.



Section 12.8. Taxes on Conversion.



The issue of stock certificates on conversion of Securities shall be made
without charge to the converting Holder for any documentary, stamp or similar issue or transfer taxes in respect of the issue thereof, and the Company shall pay any and all documentary, stamp or similar issue or transfer taxes that may be payable in
respect of the issue or delivery of Common Stock on conversion of Securities pursuant hereto. The Company shall not, however, be required to pay any such tax which may be payable in respect of any transfer involved in the issue or delivery of Common
Stock or the portion, if any, of the Securities which are not so converted in a name other than that in which the Securities so converted were registered, and no such issue or delivery shall be made unless and until the Person requesting such issue
has paid to the Company the amount of such tax or has established to the satisfaction of the Company that such tax has been paid.



Section 12.9. Conversion After Regular Record Date.



Except as provided in the succeeding paragraph, upon conversion the Holder of Securities shall not be entitled to receive any accrued and unpaid interest
or Additional Interest, if any.



If any Securities are
surrendered for conversion subsequent to the close of business on any Regular Record Date but prior to the opening of business on the corresponding Interest Payment Date, the Holder of such Securities at the close of business on such Regular Record
Date shall receive the interest and Additional Interest, if any, payable on such Securities on such Interest Payment Date notwithstanding the conversion thereof. Securities surrendered for conversion during the period from the close of business on
any Regular Record Date to the opening of business on the corresponding Interest Payment Date shall (except in the case of Securities which have been called for redemption on a Redemption Date within such period or Securities surrendered for
conversion after acceleration of the Securities) be accompanied by payment by Holders, for the account of the Company, in New York Clearing House funds or other funds acceptable to the Company of an amount equal to the interest and Additional
Interest, if any, payable on such interest payment date on the Securities being surrendered for conversion.



Except as described in Section 12.2(a) and this Section 12.9, the Company will not make any payment in cash or other adjustment for Common Stock accrued
and unpaid interest or Additional Interest, if any, on a Security when it is converted.



Section 12.10. Company Determination Final.



Except as otherwise provided herein or the Security, the Company or its agents shall be responsible for making all calculations required under the terms of this Article XII. Any determination that the Company or the Board of Directors must
make pursuant to this Article XII shall be set forth in a Board Resolution, shall be made in good faith and, absent manifest error,



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shall be final and binding on holders of the Securities. The Company or its agents shall be required to deliver to the Trustee a schedule of its calculations
and the Trustee shall be entitled to conclusively rely upon the accuracy of such calculations without independent verification.



Section 12.11. Responsibility of Trustee for Conversion Provisions.



The Trustee has no duty to determine when an adjustment under this Article XII should be made, how it should be made or what it should be. The Trustee
makes no representation as to the validity or value of any securities or assets issued upon conversion of Securities. The Trustee shall not be responsible for any failure of the Company to comply with this Article XII. Each Conversion Agent other
than the Company shall have the same protection under this Section 12.11 as the Trustee.



The rights, privileges, protections, immunities and benefits given to the Trustee under this Indenture including, without limitation, its rights to be indemnified, are extended to, and shall be enforceable by, other
than the Company, the Trustee in each of its capacities hereunder, and each Paying Agent or Conversion Agent, other than the Company, acting hereunder.



Section 12.12. Unconditional Right of Holders to Convert.



Notwithstanding any other provision in this Indenture, the Holder of any Security shall have the right, which is absolute and unconditional, to convert
its Security in accordance with this Article XII and to bring an action against the Company for the enforcement of any such right to convert, and such rights shall not be impaired or affected without the consent of such Holder.



ARTICLE XIII



TAX TREATMENT



Section 13.1. Tax Treatment.



The Company agrees, and by acceptance of beneficial ownership interest in the
Securities each beneficial holder of the Securities will be deemed to have agreed, for United States federal income tax purposes (1) to treat the Securities as indebtedness that is subject to Treas. Reg. Sec. 1.1275-4 (the Contingent
Payment Regulations) and, for purposes of the Contingent Payment Regulations, to treat the fair market value of any stock beneficially received by a beneficial holder upon any conversion of the Securities as a contingent payment and (2) to
be bound by the Companys determination of the comparable yield and projected payment schedule, within the meaning of the Contingent Payment Regulations, with respect to the Securities. A Holder may obtain the issue
price, amount of original issue discount, issue date, yield to maturity, comparable yield and projected payment schedule for the Securities by submitting a written request for such information to the Company at the address set forth in Section 14.2.



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ARTICLE XIV



MISCELLANEOUS



Section 14.1. Trust Indenture Act Controls.



If any provision of this Indenture limits, qualifies, or conflicts with the duties imposed by Section 318(c) of the TIA, such section of the TIA shall
control. If any provision of this Indenture expressly modifies or excludes any provision of the TIA that may be so modified or excluded under the TIA, the Indenture provision so modifying or excluding such provision of the TIA shall be deemed to
apply.



Section 14.2. Notices.



Any request, demand, authorization, notice, waiver, consent or communication
shall be in writing and delivered in person (including by commercial courier services) or mailed by first-class mail, postage prepaid, addressed as follows or transmitted by facsimile transmission (confirmed by guaranteed overnight courier) to the
following facsimile numbers:



if to the Company:



CURAGEN CORPORATION

555 Long Wharf Drive, 11thFloor

New Haven, Connecticut 06511

Attention: Chief Financial Officer

Facsimile No.: (03) 401-3333



with a copy to:



MINTZ, LEVIN, COHN, FERRIS, GLOVSKY & POPEO, P.C.

One Financial Center

Boston, Massachusetts
02111

Attention: Michael Fantozzi, Esq.

Facsimile No.: (617) 542-2241



if to the Trustee:



THE BANK OF NEW YORK

101 Barclay Street

New York, New York
10286

Attention: Corporate Trust Department

Facsimile No.:



The Company or
the Trustee by notice given to the other in the manner provided above may designate additional or different addresses for subsequent notices or communications.



Any notice or communication given to a Holder shall be mailed to the Holder, by first-class mail, postage prepaid, at the Holders address as it
appears on the registration books of the Registrar and shall be sufficiently given if so mailed within the time prescribed.



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Failure to mail a notice or communication to a Holder or any defect in it shall not affect its
sufficiency with respect to other Holders. If a notice or communication is mailed in the manner provided above, it is duly given, whether or not received by the addressee.



If the Company mails a notice or communication to the Holders, it shall mail a copy to the Trustee and each Registrar,
Paying Agent, Conversion Agent, or co-registrar.



Notwithstanding the foregoing, in the case of the Trustee, notice must be actually received by the Corporate Trust Office of the Trustee.



Section 14.3. Communication by Holders with Other Holders.



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



Section 14.4. Certificate and Opinion as to Conditions Precedent.



Upon any request or application by the Company to the Trustee to take any action under this Indenture, the Company shall furnish to the Trustee:



(a) an Officers Certificate stating
that, in the opinion of the signers, all conditions precedent, if any, provided for in this Indenture relating to the proposed action have been complied with; and



(b) an Opinion of Counsel (except in connection with the original issuance of Securities) stating that, in
the opinion of such counsel, all such conditions precedent have been complied with.



Section 14.5. Statements Required in Certificate or Opinion.



Each Officers Certificate or Opinion of Counsel with respect to compliance with a covenant or condition provided for in this Indenture shall include:



(a) a statement that each person making such Officers
Certificate or Opinion of Counsel has read such covenant or condition;



(b) a brief statement as to the nature and scope of the examination or investigation upon which the statements or opinions contained in such Officers Certificate or Opinion of Counsel are based;



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



(d) a statement that, in the opinion of such person, such
covenant or condition has been complied with.



In giving such
Opinion of Counsel, counsel may rely as to factual matters on an Officers Certificate or on certificates of public officials.



77



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Section 14.6. Separability 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 14.7. Rules by Trustee, Paying Agent, Conversion Agent, Registrar.



The Trustee may make reasonable rules for action by or a meeting of Holders. The Registrar, the Conversion Agent and the Paying Agent may make reasonable
rules for their functions.



Section 14.8. Legal Holidays.



If any specified date (including a date for giving notice) is a Legal
Holiday, the action shall be taken on the next succeeding day that is not a Legal Holiday, and, if the action to be taken on such date is a payment in respect of the Securities, no interest, if any, shall accrue for the intervening period.



Section 14.9. Governing Law; Submission to Jurisdiction; Service of
Process.



This Indenture shall be governed by, and
construed in accordance with, the laws of the State of New York. The Company submits to the non-exclusive jurisdiction of the courts of the State of New York and the courts of the United States of America, in each case located in the Borough of
Manhattan, New York, New York over any suit, action or proceeding arising under or in connection with this Indenture or the transactions contemplated hereby or the Securities. The Company waives any objection that it may have to the venue of any
suit, action or proceeding arising under or in connection with this Indenture or the transactions contemplated hereby or the Securities in the courts of the State of New York or the courts of the United States of America, in each case located in the
Borough of Manhattan, New York, New York, or that such suit, action or proceeding brought in the courts of the State of New York or the courts of the United States of America, in each case located in the Borough of Manhattan, New York, New York, was
brought in an inconvenient court and agrees not to plead or claim the same.



The Company agrees that service of all writs, process and summonses in any suit, action or proceeding arising under or in connection with this Indenture or the transactions contemplated thereby or the Securities
against the Company in any court of the State of New York or any United States Federal court, in each case, sitting in the Borough of Manhattan, New York, New York, may be made upon Corporation Service Company at 80 State Street, Albany, New York
12207, whom the Company irrevocably appoints as its authorized agent for service of process. The Company represents and warrants that Corporation Service Company has agreed to act as the Companys agent for service of process. The Company
agrees that such appointment shall be irrevocable until the irrevocable appointment by the Company of a successor in New York, New York as its authorized agent for such purpose and the acceptance of such appointment by such successor. The Company
further agrees to take any and all action, including the filing of any and all documents and instruments that may be necessary to continue such appointment in full force and effect as aforesaid. If Corporation Service Company shall cease to act as
the agent for service of process for the Company, the Company shall appoint without delay, another such agent and provide prompt written notice to the Trustee of such appointment.



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Section 14.10. No Recourse Against Others.



No recourse under or upon any obligation, covenant or agreement contained in this Indenture, or in any Security, or because
of any indebtedness evidenced thereby, shall be had against any incorporator, as such, or against any past, present or future stockholder, officer or director, as such, of the Company or of any successor, either directly or through the Company or
any successor, under any rule of law, statute or constitutional provision or by the enforcement of any assessment or by any legal or equitable proceeding or otherwise, all such liability being expressly waived and released by the acceptance of the
Securities by the Holders and as part of the consideration for the issue of the Securities.



Section 14.11. Successors.



All agreements of the Company in this Indenture and the Securities shall bind its successor. All agreements of the Trustee in this Indenture shall bind its successor.



Section 14.12. Multiple Originals.



The parties may sign any number of copies of this Indenture. Each signed copy shall be an original, but all of them together represent the same agreement.
One signed copy is enough to prove this Indenture.



* * * *



[THE REMAINDER OF THIS PAGE IS INTENTIONALLY LEFT BLANK]



79



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IN WITNESS WHEREOF, the undersigned, being duly authorized, have executed this Indenture on behalf of the
respective parties hereto as of the date first above written.



CURAGEN CORPORATIONBy:

/s/    JONATHAN M. ROTHBERGName:

Jonathan M. Rothberg, Ph.D.Title:

Chief Executive Officer and President




THE BANK OF NEW YORK As
TrusteeBy:

/s/    GEOVANNI BARRISName:

Geovanni BarrisTitle:

Vice President




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EXHIBIT A



[FORM OF FACE OF SECURITY]



[UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY TO THE ISSUER 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. THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A NOMINEE THEREOF. THIS SECURITY IS EXCHANGEABLE FOR SECURITIES
REGISTERED IN THE NAME OF A PERSON OTHER THAN THE DEPOSITARY OR ITS NOMINEE ONLY IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE AND, UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR SECURITIES IN DEFINITIVE FORM, THIS SECURITY MAY
NOT BE TRANSFERRED EXCEPT AS A WHOLE BY THE DEPOSITARY TO A NOMINEE OF THE DEPOSITARY OR BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR ANOTHER NOMINEE OF THE DEPOSITARY OR BY THE DEPOSITARY OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITARY OR A
NOMINEE OF SUCH SUCCESSOR DEPOSITARY.]1



[THE SECURITY EVIDENCED BY THIS CERTIFICATE HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE
SECURITIES ACT OF 1933), OR ANY STATE SECURITIES LAWS, AND MAY NOT BE OFFERED OR SOLD EXCEPT AS SET FORTH IN THE FOLLOWING SENTENCE. BY ACQUISITION HEREOF OR A BENEFICIAL INTEREST HEREIN, THE HOLDER:



(1) REPRESENTS THAT IT IS A QUALIFIED INSTITUTIONAL
BUYER AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT OF 1933;



(2) AGREES THAT IT SHALL NOT WITHIN TWO YEARS AFTER THE ORIGINAL ISSUANCE OF THIS SECURITY, RESELL OR OTHERWISE TRANSFER THE SECURITY EVIDENCED HEREBY OR THE SHARES OF COMMON STOCK ISSUABLE UPON CONVERSION OF SUCH
SECURITY EXCEPT (A) TO THE COMPANY OR ANY SUBSIDIARY THEREOF, (B) TO A PERSON THAT THE HOLDER REASONABLY BELIEVES IS A QUALIFIED INSTITUTIONAL BUYER AS DEFINED IN, AND IN COMPLIANCE WITH, RULE 144A UNDER THE SECURITIES ACT OF 1933, (C)
PURSUANT TO THE EXEMPTION FROM REGISTRATION PROVIDED BY RULE 144 UNDER THE SECURITIES ACT OF 1933 (IF AVAILABLE), (D) PURSUANT TO AN



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|1 | This legend should be included only if the Security is a Global Security.
|- | -------------------------------------------------------------------------



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EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT OF 1933 (IF AVAILABLE) TO AN INSTITUTIONAL ACCREDITED INVESTOR THAT, PRIOR TO SUCH
TRANSFER, FURNISHES TO AMERICAN STOCK TRANSFER AND TRUST COMPANY, AS TRANSFER AGENT (OR ANY SUCCESSOR TRANSFER AGENT, AS APPLICABLE), SUCH CERTIFICATIONS AND OPINION OF COUNSEL REQUIRED BY THE COMPANY OR THE TRANSFER AGENT OR (E) PURSUANT TO A
REGISTRATION STATEMENT THAT HAS BEEN DECLARED EFFECTIVE UNDER THE SECURITIES ACT OF 1933 AND THAT CONTINUES TO BE EFFECTIVE AT THE TIME OF SUCH TRANSFER; AND



(3) AGREES THAT IT WILL DELIVER TO EACH PERSON TO WHOM THE SECURITY EVIDENCED HEREBY IS TRANSFERRED (OTHER THAN A TRANSFER PURSUANT TO
CLAUSE 2(C) OR 2(E) ABOVE), A NOTICE SUBSTANTIALLY TO THE EFFECT OF THIS LEGEND.]2



[THE HOLDER OF THIS SECURITY IS ENTITLED TO THE BENEFITS OF A REGISTRATION
RIGHTS AGREEMENT (AS SUCH TERM IS DEFINED IN THE INDENTURE REFERRED TO ON THE REVERSE HEREOF) AND, BY ITS ACCEPTANCE HEREOF, AGREES TO BE BOUND BY AND TO COMPLY WITH THE PROVISIONS OF SUCH REGISTRATION RIGHTS AGREEMENT.]2.



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|2 | This legend should be included only if the Security is a Transfer Restricted Security.
|- | --------------------------------------------------------------------------------------



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CURAGEN CORPORATION

4.0% CONVERTIBLE SENIOR NOTES DUE 2011



No.  CUSIP:



CURAGEN CORPORATION, a Delaware corporation (the Company, which term shall include any successor corporation under the Indenture referred to on the reverse hereof), for value received, promises to pay to
, or registered assigns, the principal amount of
 Dollars ($) on February 15, 2011



In addition, for value received, the Company hereby promises
to pay interest to the Holder of this security from February 17, 2004 or from the most recent Interest Payment Date to which interest has been paid or duly provided for, on February 15 and August 15 in each year (each, an INTEREST PAYMENT
DATE), commencing on August 15, 2004, at the rate of 4.0% per annum until the principal hereof is paid or made available for payment at February 15, 2011 or upon acceleration, or until such date on which the Securities are converted, redeemed
or purchased as provided herein.



Interest, and Additional
Interest, if any, on Securities converted after the close of business on a Regular Record Date but prior to the opening of business on the corresponding Interest Payment Date shall be paid to the Holder of the Securities on the Regular Record Date
but, upon conversion, the Holder must pay the Company an amount equal to the interest and Additional Interest, if any, which has accrued and shall be paid on such Interest Payment Date. No such payment need be made with respect to Notes converted
after a Regular Record Date and prior to the corresponding Interest Payment Date after being called for redemption or upon acceleration.



All references herein to interest accrued or payable as of any date shall, without duplication, be deemed to include Additional Interest, if any, payable
pursuant to the Registration Rights Agreement.



Reference is
hereby made to the further provisions of this Security set forth on the reverse side of this Security, which further provisions shall for all purposes have the same effect as if set forth at this place.



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



|       |  |  |  |                     |  |        |  |                                      
|------ |  |  |  | ------------------- |  | ------ |  | -------------------------------------
|Dated: |  |  |  | CURAGEN CORPORATION
|       |  |  |  |                    
|       |  |  |  |                     |  | By:    |  | /s/    Jonathan M. Rothberg          
|       |  |  |  |                     |  |        |  |                                      
|       |  |  |  |                     |  | Name:  |  | Jonathan M. Rothberg                 
|       |  |  |  |                     |  |        |  |                                      
|       |  |  |  |                     |  | Title: |  | Chief Executive Officer and President
|       |  |  |  |                     |  |        |  |                                      



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TRUSTEES CERTIFICATE OF AUTHENTICATION



This is one of the Securities referred to in the within-mentioned Indenture.



|                         |  |  |  |                                |  |     |  | 
|------------------------ |  |  |  | ------------------------------ |  | --- |  | 
|Dated: February 17, 2004 |  |  |  | THE BANK OF NEW YORKas Trustee
|                         |  |  |  |                               
|                         |  |  |  |                                |  | By: |  | 
|                         |  |  |  |                                |  |     |  | 
|                         |  |  |  |                                |  |     |  | 





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[FORM OF REVERSE OF SECURITY]

4.0% CONVERTIBLE SENIOR NOTES DUE 2011



This Security is one of a duly authorized issue of 4.0% Convertible Senior Notes due 2011 (the Securities) of CURAGEN CORPORATION, a Delaware corporation (including any successor corporation under the Indenture hereinafter
referred to, the Company), issued under an Indenture, dated as of February 17, 2004 (the Indenture), between the Company and The Bank of New York, a New York banking corporation, as Trustee (the Trustee). The
terms of the Security include those stated in the Indenture, those made part of the Indenture by reference to the Trust Indenture Act of 1939, as amended (TIA), and those set forth in this Security. This Security is subject to all such
terms, and Holders are referred to the Indenture and the TIA for a statement of all such terms. To the extent permitted by applicable law, in the event of any inconsistency between the terms of this Security and the terms of the Indenture, the terms
of the Indenture shall control. Capitalized terms used but not defined herein have the meanings assigned to them in the Indenture referred to below unless otherwise indicated.



1. Interest.



Interest on the Securities shall be computed on the basis of a 360-day year of twelve 30-day months. If this Security is redeemed pursuant to Section 6 of
this Security or the Holder elects to require the Company to purchase this Security pursuant to Section 7 of this Security, on a date that is after the Regular Record Date and on or before the corresponding Interest Payment Date, interest and
Additional Interest, if any, accrued and unpaid hereon to, but excluding, the applicable Redemption Date or Fundamental Change Purchase Date shall be paid to the same Holder to whom the Company pays the principal of this Security. Interest and
Additional Interest, if any, accrued and unpaid hereon at the Stated Maturity also shall be paid to the same Holder to whom the Company pays the principal of this security.



Interest and Additional Interest, if any, on Securities converted after the close of business on a Regular Record Date but
prior to the opening of business on the corresponding Interest Payment Date shall be paid to the Holder of the Securities on the Regular Record Date but, upon conversion, the Holder must pay the Company an amount equal to interest and Additional
Interest, if any, which has accrued and shall be paid on such Interest Payment Date. No such payment need be made with respect to Securities which shall be converted after a Regular Record Date and prior to the corresponding Interest Payment Date
after being called for redemption.



All references herein to
interest accrued or payable as of any date shall without duplication be deemed to include any Additional Interest, if any, pursuant to the Registration Rights Agreement.



2. Method of Payment.



Payment of the principal of and interest and Additional Interest, if any, 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 or in Applicable Stock, as the case may be. The Holder must surrender the Securities to the Paying Agent to collect payment of principal. Payment of interest
and Additional Interest, if any, on Certificated Securities in the aggregate principal amount of $5,000,000 or less shall be made by check mailed to the address of the Person entitled thereto as such address appears in the Register and payment of
interest and



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Additional Interest, if any, on Certificated Securities in aggregate principal amount in excess of $5,000,000 shall be made by wire transfer in immediately
available funds at the election of such Holder. Notwithstanding the foregoing, so long as the Securities are registered in the name of a Depositary or its nominee, all payments with respect to the Securities shall be made by wire transfer of
immediately available funds to the account of the Depositary or its nominee.



3. Paying Agent, Registrar, Conversion Agent.



Initially, The Bank of New York shall act as Paying Agent, Registrar and Conversion Agent. The Company may appoint and change any Paying Agent, Registrar and Conversion Agent without notice, other than notice to the
Trustee; provided that the Company shall maintain at least one Paying Agent in Borough of Manhattan, New York, New York, which shall initially be an office or agency of the Trustee. The Company or any of its Subsidiaries or any of their Affiliates
may act as Paying Agent, Registrar or Conversion Agent.



4.
Indenture.



The Securities are general unsecured
obligations of the Company limited to up to $120,000,000 aggregate principal amount. The Indenture does not limit other indebtedness of the Company, secured or unsecured.



5. Subordination.



The indebtedness evidenced by the Securities is, to the extent and in the manner provided in the Indenture, subordinate and junior in right of payment to
the prior payment in full in cash of all Senior Indebtedness. Any Holder by accepting this Security agrees to and shall be bound by such subordination provisions and authorizes the Trustee to give them effect.



6. Redemption of the Notes by the Company.



The Securities are redeemable for cash at the option of the Company, in whole
or in part, at any time or from time to time on, or after February 18, 2009 at the Redemption Price.



Notice of redemption pursuant to this Section of this Security shall be mailed at least 20 calendar days but not more than 60 calendar days before the
Redemption Date to each Holder of Securities to be redeemed at the Holders registered address. If cash sufficient to pay the Redemption Price of all Securities (or portions thereof) to be redeemed on the Redemption Date is deposited with the
Paying Agent prior to 10:00 a.m., New York City time, on the Redemption Date, then, on such Redemption Date interest and Additional Interest, if any ceases to accrue on such Securities or portions thereof. Securities in denominations larger than
$1,000 of principal amount may be redeemed in part but only in integral multiples of $1,000 of principal amount.



7. Purchase by the Company at the Option of the Holder or Upon a Fundamental Change.



In the event that a Fundamental Change shall occur at any time prior to the Stated Maturity, each Holder shall have the
right, at the Holders option, but subject to the provisions of the Indenture, to require the Company to purchase all or any part of such Holders Notes not theretofore called for redemption, or any portion of the Principal Amount at
issuance thereof that is equal to $1,000 or an integral multiple thereof. The Company shall be required to purchase such Notes at a purchase price in cash equal to 100% of the Principal Amount plus any accrued and unpaid interest and Additional
Interest, if any to, but excluding, the Fundamental Change Purchase Date. The Company may, at its option, in lieu of paying the Fundamental Change



A-7



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Purchase Price in cash, pay the Fundamental Change Purchase Price in Common Stock valued at 95% of the average of the Closing Sales Prices of the Common
Stock for the five consecutive Trading Days immediately preceding the second Trading Day prior to the Fundamental Change Purchase Date. To exercise such right, a Holder shall deliver a Fundamental Change Purchase Notice to the Paying Agent at any
time on or before the 20th Business Day after the date of the Companys notice of the Fundamental Change (subject to extension to comply with applicable law).



Holders have the right to withdraw any Purchase Notice or Fundamental Change Purchase Notice by delivering to the Paying
Agent a written notice of withdrawal in accordance with the provisions of the Indenture.



If the Paying Agent holds, in accordance with the terms hereof, at 10:00 a.m., New York City time, on the applicable Fundamental Change Purchase Date, cash or Applicable Stock sufficient to irrevocably pay the
Fundamental Change Purchase Price, as the case may be, of any Securities for which a Fundamental Change Purchase Notice, as the case may be, has been tendered and not withdrawn pursuant to the Indenture, then, on such Fundamental Change Purchase
Date, as the case may be, such Securities shall cease to be outstanding and interest and Additional Interest, if any, on such Securities shall cease to accrue, whether or not such Securities are delivered to the Paying Agent, and the rights of the
Holders in respect thereof shall terminate (other than the right to receive the Fundamental Change Purchase Price, as the case may be, upon delivery of such Securities).



8. Conversion.



Subject to and in compliance with the provisions of the Indenture (including, without limitation, the conditions to conversion of this Security set forth
in Section 12.1 thereof), a Holder is entitled, at such Holders option, to convert the Holders Security (or any portion of the principal amount thereof that is $1,000 or an integral multiple $1,000), into fully paid and nonassessable
shares of Common Stock at the Conversion Rate in effect on the date of conversion. The number of shares of Common Stock issuable upon conversion of each $1,000 of Principal Amount of Securities is initially 103.2429 shares of Common Stock, and is
subject to adjustment in certain events as set forth in the Indenture.



A Security in respect of which a Holder has delivered a Fundamental Change Purchase Notice, as the case may be, exercising the right of such Holder to require the Company to purchase such Security may be converted only if such Fundamental
Change Purchase Notice is withdrawn in accordance with the terms of the Indenture.



Except as described in the Indenture, the Company will not make any payment in cash or Common Stock or other adjustment for accrued and unpaid interest or Additional interest on any Securities when they are converted.
The Companys delivery to the Holder of the full number of shares of Common Stock into which the Security is convertible, together with any cash payment for such Holders fractional shares, shall be deemed to satisfy the Companys
obligation to pay the Principal Amount of the Security and to satisfy its obligation to pay accrued and unpaid interest and Additional Interest, if any through the conversion date. As a result, accrued interest and Additional Interest are deemed
paid in full rather than cancelled, extinguished or forfeited. Notwithstanding the foregoing, accrued interest and Additional



A-8



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Interest, if any, will be payable upon any conversion of Securities made concurrently with or after acceleration of the Securities following an Event of
Default.



Before any Holder shall be entitled to convert any
Securities into Common Stock, such Holder shall, in the case of Global Securities, comply with the Applicable Procedures of the Depositary in effect at that time, and in the case of Certificated Securities, complete and manually sign the conversion
notice on the back of the Securities (or a facsimile thereof), deliver the completed conversion notice and the Security to be converted to the office of the Conversion Agent and, if required by the Conversion Agent, furnish appropriate endorsements
and transfer documents. Before any such conversion, a Holder also shall pay all funds required, if any, relating to interest or Additional Interest, if any, on the Securities, as provided in the Indenture, and all taxes or duties, if any, as
provided in the Indenture.



If the Company (i) reclassifies the
Common Stock, (ii) is a party to a consolidation, merger or binding share exchange or (iii) sell or conveys all or substantially all of its properties or assets to any Person, the right to convert a Security into shares of Common Stock may be
changed into a right to convert it into securities, cash or other assets of the Company or such other Person, in each case in accordance with the Indenture.



9. Denominations; Transfer; Exchange.



The Securities are in fully registered form, without coupons, in denominations of $1,000 of principal amount and integral multiples of $1,000. A Holder
may transfer or exchange Securities in accordance with the Indenture. The Registrar may require a Holder, among other things, to furnish appropriate endorsements and transfer documents and to pay any taxes and fees required by law or permitted by
the Indenture. Neither the Company, the Trustee or the Registrar shall be required to exchange or register a transfer of (i) any Securities selected for redemption (except, in the case of a Security to be redeemed in part, the portion of the
Security not to be redeemed) or (ii) any Securities in respect of which a Fundamental Change Purchase Notice has been given and not withdrawn by the Holder thereof in accordance with the terms of this Indenture (except, in the case of a Security to
be repurchased in part, the portion of the Security not to be repurchased) or (iii) any Securities surrendered for conversion.



10. Persons Deemed Owners.



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



11. Unclaimed Money or Securities.



The Trustee and the Paying Agent shall return to the Company upon written
request any cash or securities held by them for the payment of any amount with respect to the Securities that remains unclaimed for two years, subject to applicable unclaimed property law. After return to the Company, Holders entitled to the money
or securities must look to the Company for payment as general creditors unless an applicable abandoned property law designates another person.



12. Amendment; Waiver.



Subject to certain exceptions set forth in the Indenture, (i) the Indenture or the Securities may be amended with the written consent or affirmative vote
of the Holders of at least a majority in aggregate principal amount of the outstanding Securities and (ii) certain Defaults may be



A-9



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waived with the written consent or affirmative vote of the Holders of a majority in aggregate principal amount of the outstanding Securities.



Without the consent of any Holder, the Company and the Trustee may amend the
Indenture or the Securities to:



(a) add to
the covenants of the Company for the benefit of the Holders of Securities;



(b) surrender any right or power herein conferred upon the Company;



(c) provide for conversion rights of Holders of Securities if any reclassification or change of the Common Stock or any consolidation,
merger or sale of all or substantially all of the Companys assets occurs;



(d) provide for the assumption of the Companys obligations to the Holders of Securities in the case of a merger, consolidation,
conveyance, transfer, sale, lease or other disposition pursuant to Article VII;



(e) increase the Conversion Rate; provided, however, that such increase in the Conversion Rate shall not adversely affect the interests of
the Holders of Securities (after taking into account tax and other consequences of such increase);



(f) comply with the requirements of the SEC in order to effect or maintain the qualification of this Indenture under the TIA;



(g) make any changes or modifications necessary in
connection with the registration of the Securities under the Securities Act as contemplated in the Registration Rights Agreement; provided, however, that such action pursuant to this clause (g) does not, in the good faith opinion of the Board of
Directors (as evidenced by a Board Resolution), adversely affect the interests of the Holders of Securities in any material respect;



(h) cure any ambiguity, correct or supplement any provision herein which may be inconsistent with any other provision herein or which is
otherwise defective, or to make any other provisions with respect to matters or questions arising under this Indenture which the Company may deem necessary or desirable and which shall not be inconsistent with the provisions of this Indenture;
provided, however, that such action pursuant to this clause (h) does not, in the good faith opinion of the Board of Directors (as evidenced by a Board Resolution), adversely affect the interests of the Holders of Securities in any material respect;



(i) to evidence the succession of another
Person to the Company or any other obligor upon the Securities, and the assumption by any such successor of the covenants of the Company or such obligor herein and in the Securities, in each case in compliance with the provisions of this Indenture;



(j) to evidence and provide the acceptance of
the appointment of a successor trustee hereunder; or



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(k) add or modify any other provisions herein with respect to matters or questions
arising hereunder which the Company and the Trustee may deem necessary or desirable and which shall not adversely affect the interests of the Holders of Securities.



13. Defaults and Remedies.



If any Event of Default other than as a result of certain events of bankruptcy, insolvency or reorganization of the Company or its designated
Subsidiaries occurs and is continuing, the principal of all the Securities may be declared due and payable in the manner and with the effect provided in the Indenture. If an Event of Default occurs as a result of certain events of bankruptcy,
insolvency or reorganization of the Company or its designated Subsidiaries, the principal of all the Securities shall become due and payable immediately without any declaration or other act on the part of the Trustee or any Holder, all as and to the
extent provided in the Indenture.



14. Trustee Dealings with
the Company.



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



15. Calculations in Respect of Securities.



The Company or its agents shall be responsible for making all calculations called for under the Securities including, but not limited to, determination of the Market Price and Closing Sale Price of the Applicable
Stock, the number of shares of Applicable Stock and/or the amount of cash issuable or payable upon conversion and the amounts of interest and Additional Interest, if any, on the Securities. Any calculations made in good faith and without manifest
error shall be final and binding on Holders of the Securities. The Company or its agents shall be required to deliver to the Trustee a schedule of its calculations and the Trustee shall be entitled to conclusively rely upon the accuracy of such
calculations without independent verification.



16. No
Recourse Against Others.



No recourse under or upon any
obligation, covenant or agreement contained in the Indenture, or in this Security, or because of any indebtedness evidenced thereby, shall be had against any incorporator, as such, or against any past, present or future stockholder, officer or
director, as such, of the Company or of any successor, either directly or through the Company or any successor, under any rule of law, statute or constitutional provision or by the enforcement of any assessment or by any legal or equitable
proceeding or otherwise, all such liability being expressly waived and released by the acceptance of the Securities by the Holders and as part of the consideration for the issue of the Securities.



17. Authentication.



This Security shall not be valid until an authorized signatory of the Trustee
signs, manually or by facsimile, the Trustees Certificate of Authentication on the other side of this Security.



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18. 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).



19. INDENTURE TO CONTROL; GOVERNING LAW.



IN THE CASE OF ANY CONFLICT BETWEEN THE PROVISIONS OF THIS SECURITY AND THE INDENTURE, THE PROVISIONS OF THE INDENTURE SHALL
CONTROL. THE INDENTURE AND THIS SECURITY SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.



The Company shall furnish to any Holder upon written request and without charge a copy of the Indenture which has in it the text of this Security in
larger type. Requests may be made to:



if to the Company:



CURAGEN CORPORATION

555 Long Wharf Drive, 11thFloor

New Haven, Connecticut 06511

Attention: Chief Financial Officer

Facsimile No.: (403) 401-3333



with a copy to:



MINTZ, LEVIN, COHN, FERRIS, GLOVSKY & POPEO, P.C.

One Financial Center

Boston, Massachusetts
02111

Attention: Michael Fantozzi, Esq.

Facsimile No.: (617) 542-2241



20. Registration Rights.



The Holders of the
Securities are entitled to the benefits of a Registration Rights Agreement, dated as of February 17, 2004, between the Company and Bear, Stearns & Co. Inc., as amended, modified or supplements in accordance therewith, including the receipt of
Additional Interest upon a Registration Default (as defined in such agreement).



A-12



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ASSIGNMENT FORM



To assign this Security, fill in the form below:



I or we assign and transfer this Security to





(Insert assignees soc. sec. or tax ID no.)













(Print or type assignees name, address and zip code) and irrevocably appoint
 agent to transfer this Security on the books of the Company. The agent may substitute another to act for him.



Your Signature(s):



Date:





(Sign exactly as your name(s) appears on the other side of this Security)



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|Signature Guaranteed                                             
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|                                                                 
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|Participant in a Recognized Signature Guarantee
Medallion Program
|                                                                 
|By:                                                              
|                                                                 
|Authorized Signatory                                             



A-13



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OPTION OF HOLDER TO ELECT PURCHASE



If you wish to have this Security purchased by the Company pursuant to Article V (Purchase at the Option of Holders Upon a
Fundamental Change) of the Indenture, check the box: Article V ̈.



If you wish to have a portion of this Security purchased by the Company pursuant to Article V of the Indenture, as
applicable, state the amount (in Principal Amount): $.



If certificated, the certificate numbers of the Securities to be delivered for purchase are: .



Any purchase of Securities pursuant hereto shall be pursuant to the terms and
conditions specified in the Indenture.



Your
Signature(s):



Date:





(Sign exactly as your
name(s) appears on the other side of this Security)



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|Signature Guaranteed                                             
|                                                                 
|                                                                 
|                                                                 
|Participant in a Recognized Signature Guarantee
Medallion Program
|                                                                 
|By:                                                              
|                                                                 
|Authorized Signatory                                             



A-14



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CONVERSION NOTICE



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):.



Please check one:



| ̈ | I certify that neither I nor any other Person shall become a 10% Stockholder upon satisfaction by the Company of the Conversion Obligation underlying this Conversion Notice in
Common Stock.
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| ̈ | I do not certify that neither I nor any other Person shall become a 10% Stockholder upon satisfaction by the Company of the Conversion Obligation underlying this Conversion Notice
in Common Stock.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



10% Stockholder
means a Person that owns, directly or indirectly, applying the provisions of Section 958(a) of the Internal Revenue Code of 1986, as amended (the Code), or by attribution, applying the provisions of Section 958(b) of the Code, 10% or
more of the outstanding shares of Common Stock.



If you want
the stock certificate made out in another persons name fill in the form below:





(Insert the other persons soc. sec. or tax ID no.)













(Print or type the other persons name, address and zip code) Your
Signature(s):



Date:





(Sign exactly as your
name(s) appears on the other side of this Security)



|                                                                 
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|Signature Guaranteed                                             
|                                                                 
|                                                                 
|                                                                 
|Participant in a Recognized Signature Guarantee
Medallion Program
|                                                                 
|By:                                                              
|                                                                 
|Authorized Signatory                                             



A-15



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TRANSFER CERTIFICATE3

RE: 4.0% CONVERTIBLE SENIOR NOTES DUE 2011 (THE SECURITIES) OF

CURAGEN CORPORATION (THE COMPANY)



This certificate relates to $ principal amount of Securities owned in
(check applicable box) ̈book-entry ̈definitive form by  (the Transferor).



The Transferor has requested a Registrar or the Trustee to
exchange or register the transfer of such Securities.



In
connection with such request and in respect of each such Security, the Transferor does hereby certify that the Transferor is familiar with transfer restrictions relating to the Securities as provided in Section 2.6 and Section 2.12 of the Indenture
dated February , 2004 between the Company and The Bank of New York, as Trustee (the Indenture), and the transfer of such Security is being made pursuant to an effective
registration statement under the Securities Act of 1933, as amended (the Securities Act) (check applicable box) or the transfer or exchange, as the case may be, of such Security does not require registration under the Securities Act
because (check applicable box):



| ̈ | Such Security is being transferred to the Company or a Subsidiary; or
|- | ---------------------------------------------------------------------



| |  ̈ | Such Security is being transferred to a Qualified Institutional Buyer in compliance with Rule 144A under the Securities Act; or
| | - | -------------------------------------------------------------------------------------------------------------------------------



| |  ̈ | Such Security is being transferred pursuant to and in compliance with an exemption from the registration requirements under the Securities Act in accordance with Rule 144 (or any
successor thereto) (Rule 144) under the Securities Act; or
| | - | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  ̈ | Such Security is being transferred to an institutional investor that is an accredited investor (as defined in Rule 501(a)(1), (2), (3) or (7) under the Securities Act)
that has transferred a letter making certain representations, warranties and agreements relating to restrictions on transfer and an opinion of counsel to as transfer agent (or any successor transfer agent, as applicable) that such transfer is in
compliance with the Securities Act.
| | - | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  ̈ | Such Security is being transferred pursuant to an effective registration statement under the Securities Act; or
| | - | ---------------------------------------------------------------------------------------------------------------



| |  ̈ | Such Security is being acquired for the Transferors own account, without transfer.
| | - | -----------------------------------------------------------------------------------



The Transferor acknowledges and agrees that, if the transferee shall hold any such Securities in the form of beneficial
interests in a Global Security which is a restricted security within the meaning of Rule 144 under the Securities Act, then such transfer can only be made pursuant to Rule 144A under the Securities Act and such transferee must be a
qualified institutional buyer (as defined in Rule 144A).



Date:



Signature(s) of Transferor

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|3 | This certificate should only be included if this Security is a Transfer Restricted Security.
|- | --------------------------------------------------------------------------------------------



A-16



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(If the registered owner is a corporation, partnership or fiduciary, the title of the person signing on
behalf of such registered owner must be stated. ) Signature Guaranteed



|                                                                  |  |                     
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|                                                                 
|Participant in a Recognized Signature Guarantee Medallion Program
|                                                                  | 
|By:                                                               |  |                     
|                                                                  |  |                     
|                                                                  |  | Authorized Signatory



A-17



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EXHIBIT B

[FORM OF RESTRICTIVE LEGEND FOR

COMMON STOCK ISSUED UPON CONVERSION]4



THE SECURITY EVIDENCED BY THIS CERTIFICATE HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE SECURITIES ACT OF 1933),
OR ANY STATE SECURITIES LAWS, AND MAY NOT BE OFFERED OR SOLD EXCEPT AS SET FORTH IN THE FOLLOWING SENTENCE. BY ACQUISITION HEREOF, THE HOLDER:



(1) REPRESENTS THAT IT IS A QUALIFIED INSTITUTIONAL BUYER AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT OF 1933;



(2) AGREES THAT IT SHALL NOT, WITHIN TWO
YEARS AFTER THE ORIGINAL ISSUANCE OF THE SECURITY UPON THE CONVERSION OF WHICH THE SHARES OF COMMON STOCK EVIDENCED HEREBY WERE ISSUED, RESELL OR OTHERWISE TRANSFER THE SECURITY EVIDENCED HEREBY EXCEPT (A) TO THE COMPANY OR ANY SUBSIDIARY THEREOF,
(B) PURSUANT TO THE EXEMPTION FROM REGISTRATION PROVIDED BY RULE 144 UNDER THE SECURITIES ACT OF 1933 (IF AVAILABLE), (C) PURSUANT TO AN EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT OF 1933 (IF AVAILABLE) TO AN INSTITUTIONAL
ACCREDITED INVESTOR THAT PRIOR TO SUCH TRANSFER, FURNISHES TO, AS TRANSFER AGENT (OR ANY SUCCESSOR TRANSFER AGENT, AS APPLICABLE), CERTIFICATIONS AND OPINION OF COUNSEL REQUIRED BY THE COMPANY OR TRANSFER AGENT OR (D) PURSUANT TO A REGISTRATION
STATEMENT THAT HAS BEEN DECLARED EFFECTIVE UNDER THE SECURITIES ACT OF 1933 AND THAT CONTINUES TO BE EFFECTIVE AT THE TIME OF SUCH TRANSFER; AND (3) AGREES THAT IT SHALL DELIVER TO EACH PERSON TO WHOM THE SECURITY EVIDENCED HEREBY IS TRANSFERRED
(OTHER THAN A TRANSFER PURSUANT TO CLAUSE 2(B) OR 2(D) ABOVE), A NOTICE SUBSTANTIALLY TO THE EFFECT OF THIS LEGEND.]

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|4 | This legend should be included only if the Security is a Global Security.
|- | -------------------------------------------------------------------------



B-1