Exhibit No

EXECUTION VERSION

     

US AIRWAYS GROUP, INC.

as Issuer

AND

THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.

as Trustee

FIRST SUPPLEMENTAL INDENTURE

Dated as of May 13, 2009

$172,500,000

7.25% Convertible Senior Notes due 2014

     

TABLE OF CONTENTS

		Page
ARTICLE 1
DEFINITIONS
Section 1.01. Definitions			1
ARTICLE 2
ISSUE, DESCRIPTION, EXECUTION, REGISTRATION AND EXCHANGE OF NOTES
Section 2.01. Designation and Amount			8
Section 2.02. Form of Notes			8
Section 2.03. Date and Denomination of Notes; Payments of Interest			9
ARTICLE 3
DEFAULTS AND REMEDIES
Section 3.01. Events of Default			9
Section 3.02. Acceleration			11
Section 3.03. Collection of Indebtedness and Suits for Enforcement by Trustee			12
Section 3.04. Application of Moneys Collected			13
Section 3.05. Limitation on Suits			13
Section 3.06. Rights and Remedies Cumulative; Delay or Omission Not Waiver			14
Section 3.07. Additional Interest			14
Section 3.08. Direction of Proceedings and Waiver of Defaults by Majority of Noteholders			15
Section 3.09. Notice of Defaults			15
Section 3.10. Undertaking to Pay Costs			16
ARTICLE 4
SUPPLEMENTAL INDENTURES
Section 4.01. Supplemental Indentures Without Consent of Noteholders			16
Section 4.02. Supplemental Indentures With Consent of Noteholders			17
Section 4.03. Effect of Supplemental Indentures			18
Section 4.04. Notation on Notes			18
Section 4.05. Evidence of Compliance of Supplemental Indenture to Be Furnished to Trustee			18
Section 4.06. Notice of Execution of Supplemental Indenture			18
ARTICLE 5
CONVERSION OF NOTES
Section 5.01. Conversion Privilege			19
Section 5.02. Conversion Procedure			19
Section 5.03. Increased Conversion Rate Applicable to Certain Notes Surrendered in Connection with Make-Whole Fundamental Changes			22
Section 5.04. Adjustment of Conversion Rate			24
Section 5.05. Shares to Be Fully Paid			33
Section 5.06. Effect of Reclassification, Consolidation, Merger or Sale			33
Section 5.07. Certain Covenants			35
Section 5.08. Responsibility of Trustee			35
Section 5.09. Notice to Noteholders Prior to Certain Actions			36

TABLE OF CONTENTS
(continued)

		Page
Section 5.10. Stockholder Rights Plans			36
Section 5.11. Exchange in Lieu of Conversion			37
ARTICLE 6
REPURCHASE OF NOTES AT OPTION OF NOTEHOLDERS
Section 6.01. Repurchase at Option of Noteholders upon a Fundamental Change			37
Section 6.02. Withdrawal of Fundamental Change Repurchase Notice			40
Section 6.03. Deposit of Fundamental Change Repurchase Price			40
ARTICLE 7
MISCELLANEOUS
Section 7.01. Ratification of Indenture			41
Section 7.02. Trustee Not Responsible for Recitals			42
Section 7.03. Waiver of Stay, Extension or Usury Laws			42
Section 7.04. Governing Law			43
Section 7.05. Separability			43
Section 7.06. Counterparts			43
Section 7.07. Notices to Noteholders			43
EXHIBITS
Exhibit A Form of Note			A-1
Exhibit B Form of Notice of Conversion			B-1
Exhibit C Form of Fundamental Change Repurchase Notice			C-1
Exhibit D Form of Assignment and Transfer			D-1

          FIRST SUPPLEMENTAL INDENTURE, dated as of May 13, 2009 (this “Supplemental Indenture”), between US Airways Group, Inc., a Delaware corporation (the “Company”), and The Bank of New York Mellon Trust Company, N.A., as trustee (the “Trustee”), to the indenture, dated as of as of May 13, 2009 (the “Base Indenture”), between the Company and the Trustee.

          WHEREAS, the Company executed and delivered the Base Indenture to the Trustee to provide for, among other things, the issuance from time to time of the Company’s debt securities in one or more series as might be authorized under the Base Indenture;

          WHEREAS, the Base Indenture provides that the Company and the Trustee may enter into an Indenture supplemental to the Base Indenture to establish the form and terms of any series of Securities (as defined in Section 1.01 of the Base Indenture) as provided by Section 2.01 of the Base Indenture;

          WHEREAS, the Company desires to enter into this Supplemental Indenture to provide for the establishment of a series of Securities (as defined in Section 1.01 of the Base Indenture) to be known as the 7.25% Convertible Senior Notes due 2014 (each such Security being hereinafter called a “Note”), the form, substance, terms, provisions and conditions of which shall be set forth in Article 2 of the Base Indenture as supplemented by this Supplemental Indenture, as the same may be further amended and supplemented from time to time (being hereinafter called this “Indenture”);

          WHEREAS, the Board of Directors of the Company has duly adopted resolutions authorizing the Company to issue the Notes provided for in this Supplemental Indenture; and

          WHEREAS, the Company has requested that the Trustee execute and deliver this Supplemental Indenture and has satisfied all requirements necessary to make (i) this Supplemental Indenture a valid instrument in accordance with its terms and (ii) the Notes provided for hereby, when executed and delivered by the Company and authenticated by the Trustee, a series of Securities (as defined in Section 1.01 of the Base Indenture) that are the valid obligations of the Company.

WITNESSETH:

          NOW THEREFORE, each party agrees as follows for the benefit of the other parties and for the equal and ratable benefit of the Holders of the Notes:

ARTICLE 1
DEFINITIONS

          Section 1.01. Definitions. Unless otherwise specified herein or the context otherwise requires:

          (a) a term defined in the Base Indenture has the same meaning when used in this Supplemental Indenture unless the definition of such term is amended or supplemented pursuant to this Supplemental Indenture;

          (b) the terms defined in this Article and in this Supplemental Indenture include the plural as well as the singular;

          (c) a reference to a Section or Article is to a Section or Article of this Supplemental Indenture;

          (d) Article and Section headings herein and the Table of Contents are for convenience only and shall not affect the construction hereof; and

          (e) the following terms have the meanings given to them in this Section 1.01(e):

          “Additional Interest” means all amounts, if any, payable pursuant to Section 3.07.

          “Base Indenture” has the meaning set forth in the recitals hereto.

          “Bankruptcy Law” means Title 11, U.S. Code or any similar federal or state law for the relief of debtors.

          “Business Day” means each Monday, Tuesday, Wednesday, Thursday and Friday that is not a day on which the banking institutions in New York City are authorized or obligated by law or executive order to close or be closed.

          “Capital Stock” means, for any entity, any and all shares, interests, rights to purchase, warrants, options, participations or other equivalents of or interests in (however designated) stock issued by that entity.

          “Cash Settlement Averaging Period” means, with respect to any Note surrendered for conversion, the twenty consecutive Trading Day period beginning on, and including, the third Trading Day immediately following the Conversion Date for such Note; provided that, with respect to any Conversion Date occurring during the period beginning on, and including, March 15, 2014 and ending at the close of business on the second Scheduled Trading Day immediately prior to the Maturity Date, the “Cash Settlement Averaging Period” means the twenty consecutive Trading Day period beginning on, and including, the twenty-second Scheduled Trading Day prior to the Maturity Date.

          “close of business” means 5:00 p.m. (New York City time).

          “Commission” means the Securities and Exchange Commission, as from time to time constituted, created under the Securities Exchange Act of 1934.

          “Common Equity” of any Person means Capital Stock of such Person that is generally entitled (a) to vote in the election of directors of such Person or (b) if such Person is not a corporation, to vote or otherwise participate in the selection of the governing body, partners, managers or others that will control the management or policies of such Person.

          “Common Stock” means, subject to Section 5.06(b), shares of common stock of the Company, par value $0.01 per share, at the date of this Supplemental Indenture or shares of any class or classes resulting from any reclassification or reclassifications thereof and that have no preference in respect of dividends or of amounts payable in the event of any voluntary or involuntary liquidation, dissolution or winding up of the Company and that are not subject to redemption by the Company; provided that if at any time there shall be more than one such resulting class, the shares of each such class then so issuable shall be substantially in the proportion that the total number of shares of such class resulting from all such reclassifications bears to the total number of shares of all such classes resulting from all such reclassifications.

          “Continuing Director” means a director who either was a member of the Board of Directors on May 13, 2009 or who becomes a member of the Board of Directors subsequent to that date and whose election, appointment or nomination for election by the stockholders of the Company is duly approved by a majority of the Continuing Directors on the Board of Directors at the time of such approval, either by a specific vote or by approval of the proxy statement issued by the Company on behalf of the entire Board of Directors in which such individual is named as nominee for director.

          “Company” has the meaning set forth in the recitals hereto.

          “Conversion Agent” has the meaning specified in Section 5.08.

          “Conversion Date” has the meaning specified in Section 5.02(c).

          “Conversion Obligation” has the meaning specified in Section 5.01(a).

          “Conversion Price” means as of any date, $1,000, divided by the Conversion Rate as of such date.

          “Conversion Rate” has the meaning specified in Section 5.01(a).

          “Custodian” means the Trustee, as custodian for the Depositary, with respect to the Global Notes, or any successor entity thereto.

          “Daily Conversion Value” means, for each of the twenty consecutive Trading Days during the Cash Settlement Averaging Period, one-twentieth (1/20th) of the product of (a) the then-applicable Conversion Rate on such Trading Day and (b) the Daily VWAP of the Common Stock on such Trading Day.

          “Daily Measurement Value” is equal to the Specified Dollar Amount, divided by twenty.

          “Daily Settlement Amount,” for each of the twenty consecutive Trading Days during the Cash Settlement Averaging Period, shall consist of:

     (a) cash equal to the lesser of the Daily Measurement Value and the Daily Conversion Value for such Trading Day; and

     (b) to the extent the Daily Conversion Value for such Trading Day exceeds the Daily Measurement Value, a number of shares of Common Stock equal to the Daily Share Amount.

          “Daily Share Amount” means, to the extent the Daily Conversion Value exceeds the Daily Measurement Value, (i) the difference between the Daily Conversion Value and the Daily Measurement Value, divided by (ii) the Daily VWAP of the Common Stock for such Trading Day.

          “Daily VWAP” for the Common Stock, in respect of any Trading Day, means the per share volume-weighted average price on the New York Stock Exchange as displayed under the heading “Bloomberg VWAP” on Bloomberg page “LCC.N <equity> AQR” (or its equivalent successor if such page is not available) in respect of the period from the scheduled opening of trading until the scheduled close of trading of the primary trading session on such Trading Day (or if such volume-weighted average price is unavailable, the market value of one share of the Common Stock on such Trading Day as determined by the Board of Directors (or a committee thereof) in a commercially reasonable manner,

using a volume-weighted average price method) and will be determined without regard to after hours trading or any other trading outside of the regular trading session.

          “Depositary” means, with respect to the Global Notes the Person specified as the depositary with respect to such Notes, until a successor shall have been appointed and become such pursuant to the applicable provisions of this Indenture, and thereafter, “Depositary” shall mean or include such successor.

          “Effective Date” has the meaning specified in Section 5.03(a).

          “Event of Default” has the meaning specified in Section 3.01.

          “Ex-Dividend Date” means, with respect to any issuance, dividend or distribution in which the holders of Common Stock (or other security) have the right to receive any cash, securities or other property, the first date on which the shares of the Common Stock (or other security) trade on the applicable exchange or in the applicable market, regular way, without the right to receive the issuance, dividend or distribution in question.

          “Exchange Act” means the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder.

          “Expiration Date” has the meaning specified in Section 5.04(e).

          “Expiration Time” has the meaning specified in Section 5.04(e).

          “Fundamental Change” means the occurrence after the original issuance of the Notes of any of the following events:

     (a) any “person” or “group” (within the meaning of Section 13(d) of the Exchange Act) other than the Company or its Subsidiaries files a Schedule TO or any schedule, form or report under the Exchange Act disclosing that such person or group has become the direct or indirect ultimate “beneficial owner,” as defined in Rule 13d-3 under the Exchange Act, of the Company’s Common Equity representing more than 50% of the voting power of the Company’s Common Equity;

     (b) consummation of any binding share exchange, exchange offer, tender offer, consolidation or merger of the Company pursuant to which all or substantially all of the Common Stock will be converted into cash, securities or other property or any sale, lease or other transfer in one transaction or a series of related transactions of all or substantially all of the consolidated assets of the Company and its Subsidiaries, taken as a whole, to any Person other than one or more of the Company’s Subsidiaries; (any such exchange, offer, consolidation, merger, transaction or series of transactions being referred to in this definition as an “event”); provided, however, that any such event where the holders of more than 50% of the outstanding shares of Common Stock immediately prior to such event, own, directly or indirectly, more than 50% of all classes of the common equity of the continuing or surviving person or transferee or the parent thereof immediately after such event shall not be a Fundamental Change;

     (c) the first day on which Continuing Directors cease to constitute at least a majority of the Board of Directors;

     (d) the stockholders of the Company approve any plan or proposal for the liquidation or dissolution of the Company; or

     (e) the Common Stock (or other common stock into which the Notes are then convertible) ceases to be listed on at least one U. S. national securities exchange,

provided, however, in the case of an event described in clause (b) above, if (1) at least 90% of the consideration, excluding cash payments for fractional shares, in the transaction or event constituting the Fundamental Change consists of shares of Publicly Traded Securities, and (2) as a result of the event, the Notes become convertible into such Publicly Traded Securities, excluding cash payments for fractional shares (subject to the provisions of Section 5.02(a)), such event shall not be a Fundamental Change (including under clause (c) above); provided, further, if any transaction in which the Common Stock is replaced by the securities of another entity shall occur, following completion of any related Make-Whole Fundamental Change period and any related Fundamental Change Repurchase Date, references to the Company in this definition shall instead apply to such other entity; and provided, further, that any filing that would otherwise constitute a Fundamental Change under clause (a) above shall not constitute a Fundamental Change if (x) the filing occurs in connection with a transaction in which the Common Stock is replaced by the securities of another entity (including a parent entity) and (y) no such filing is made or is in effect with respect to common equity representing more than 50% of the voting power of such other entity.

          For purposes of this definition, whether a “person” is a “beneficial owner” shall be determined in accordance with Rule 13d-3 under the Exchange Act and “person” includes any syndicate or group that would be deemed to be a “person” under Section 13(d)(3) of the Exchange Act.

          “Fundamental Change Company Notice” has the meaning specified in Section 6.01(b).

          “Fundamental Change Expiration Time” has the meaning specified in Section 6.01(b)(ix).

          “Fundamental Change Repurchase Date” has the meaning specified in Section 6.01(a).

          “Fundamental Change Repurchase Notice” has the meaning specified in Section 6.01(a)(i).

          “Fundamental Change Repurchase Price” has the meaning specified in Section 6.01(a).

          “Global Note” means a Note in global form registered in the name of the Depositary or its nominee.

          “Indenture” has the meaning set forth in the recitals hereto.

          “Interest Payment Date” means each May 15 and November 15 of each year, beginning on November 15, 2009; provided, however, that if any Interest Payment Date falls on a date that is not a Business Day, such payment of interest (including Additional Interest, if any) (or principal in the case of the Maturity Date) will be postponed until the next succeeding Business Day, and no interest or other amount will be paid as a result of such postponement.

          “Interest Record Date,” with respect to any Interest Payment Date, means the May 1 or November 1 (whether or not such day is a Business Day) immediately preceding the relevant Interest Payment Date, respectively.

          “Last Reported Sale Price” of the Common Stock on any date means the closing sale price per share (or if no closing sale price is reported, the average of the bid and ask prices or, if more than one in either case, the average of the average bid and the average ask prices) on that date as reported in composite transactions for the principal U.S. national or regional securities exchange on which the Common Stock is listed for trading. The Last Reported Sale Price will be determined without reference to after-hours or extended market trading. If the Common Stock is not listed for trading on a U.S. national securities exchange on the relevant date, then the “Last Reported Sale Price” of the Common Stock will be the last quoted bid price for the Common Stock in the over-the-counter market on the relevant date as reported by Pink OTC Markets Inc. or similar organization. If the Common Stock is not so quoted, the “Last Reported Sale Price” of the Common Stock will be determined by a U.S. nationally recognized independent investment banking firm selected by the Company for this purpose.

          “Make-Whole Conversion Rate Adjustment” has the meaning specified in Section 5.03(a).

          “Make-Whole Fundamental Change” means any transaction or event that constitutes a Fundamental Change under clause (a) or (b) of the definition thereof (in the case of any Fundamental Change described in clause (b) of the definition thereof, determined without regard to the proviso in such clause (b) but subject to the three provisos immediately following clause (e) of the definition of Fundamental Change.

          “Make-Whole Fundamental Change Period” has the meaning specified in Section 5.03(a).

          “Market Disruption Event” means (a) a failure by the primary exchange or quotation system on which the Common Stock trades or is quoted, as the case may be, to open for trading during its regular trading session or (b) the occurrence or existence prior to 1:00 p.m., New York City time, on any Trading Day for the Common Stock of an aggregate one-half hour period, of any suspension or limitation imposed on trading (by reason of movements in price exceeding limits permitted by the stock exchange or otherwise) in the Common Stock or in any options, contracts or future contracts relating to the Common Stock.

          “Maturity Date” means May 15, 2014.

          “Merger Event” has the meaning specified in Section 5.06.

          “Note” has the meaning specified in the Preamble.

          “Noteholder” or “holder,” as applied to any Note, or other similar terms (but excluding the term “beneficial holder”), means any person in whose name at the time a particular Note is registered on the Security Register.

          “Notice of Conversion” has the meaning specified in Section 5.02(b).

          “opening of business” means 9:00 a.m. (New York City time).

          “Paying Agent” means any Person (including the Company acting as Paying Agent) authorized by the Company to pay the principal of or interest (including Additional Interest, if any) of any Notes on behalf of the Company.

          “Person” means an individual, a corporation, a limited liability company, an association, a partnership, a joint venture, a joint stock company, a trust, an unincorporated organization or a government or an agency or a political subdivision thereof.

          “Predecessor Note” of any particular Note means every previous Note evidencing all or a portion of the same debt as that evidenced by such particular Note; and, for the purposes of this definition, any Note authenticated and delivered under Section 2.07 of the Base Indenture in lieu of or in exchange for a mutilated, lost, destroyed or stolen Note shall be deemed to evidence the same debt as the mutilated, lost, destroyed or stolen Note that it replaces.

          “Prospectus” means the prospectus dated October 4, 2006 as supplemented by the final prospectus supplement dated May 7, 2009 relating to the offering and sale of the Notes.

          “Publicly Traded Securities” means shares of common stock that are traded on a national securities exchange or that will be so traded when issued or exchanged in connection with a Fundamental Change described in clause (a) or (b) of the definition thereof.

          “Record Date” has the meaning specified in Section 5.04(f).

          “Reference Property” has the meaning specified in Section 5.06(b).

          “Scheduled Trading Day” means any day that is scheduled to be a Trading Day.

          “Securities Act” means the Securities Act of 1933, as amended, and the rules and regulations promulgated thereunder.

          “Settlement Amount” has the meaning specified in Section 5.02(a).

          “Settlement Method” means, with respect to a conversion of Notes, the relative proportions of cash and/or shares of Common Stock with which such conversion is settled under this Indenture, as elected (or deemed elected) by the Company.

          “Settlement Notice” has the meaning specified in Section 5.02(a)(iii).

          “Significant Subsidiary” means, at any date of determination, any Subsidiary that would constitute a “significant subsidiary” within the meaning of Article 1 of Regulation S-X promulgated under the Securities Act as in effect on the date of this Supplemental Indenture.

          “Specified Dollar Amount” means an amount of cash per $1,000 principal amount of a converted Note specified by the Company in the Settlement Notice related to such converted Note.

          “Spin-Off” has the meaning specified in Section 5.04(c).

          “Stock Price” means (a) in the case of a Make-Whole Fundamental Change described in clause (b) of the definition of Fundamental Change in which holders of Common Stock receive solely cash consideration in connection with such Make-Whole Fundamental Change, the amount of cash paid per share of the Common Stock and (b) in the case of all other Make-Whole Fundamental Changes, the

average of the Last Reported Sale Prices per share of Common Stock over the period of five consecutive Trading Days ending on, and including, the Trading Day immediately preceding the Effective Date of such Make-Whole Fundamental Change. The Board of Directors will make appropriate adjustments, in its good faith determination, to account for any adjustment to the Conversion Rate that becomes effective, or any event requiring an adjustment to the Conversion Rate where the Ex-Dividend Date of the event occurs, during such five consecutive Trading Day period.

          “Successor Company” means the resulting, surviving or transferee Person resulting from the merger, consolidation, sale or lease of substantially all of its assets of the Company.

          “Supplemental Indenture” has the meaning set forth in the recitals hereto.

          “Trading Day” means a day during which trading in the Common Stock generally occurs on the primary exchange or quotation system on which Common Stock then trades or is quoted and there is no Market Disruption Event. If the Common Stock (or other security for which a Last Reported Sale Price or Daily VWAP must be determined) is not so traded or quoted, “Trading Day” means “Business Day.”

          “Trigger Event” has the meaning specified in Section 5.04(c).

          “Trustee” has the meaning set forth in the recitals hereto.

          “Valuation Period” has the meaning specified in Section 5.04(c).

          “Weighted Average Consideration” has the meaning specified in Section 5.06(c)(iv).

ARTICLE 2
ISSUE, DESCRIPTION, EXECUTION, REGISTRATION
AND EXCHANGE OF NOTES

          Section 2.01. Designation and Amount. The Notes shall be designated as the “7.25% Convertible Senior Notes due 2014.” The aggregate principal amount of Notes that may be authenticated and delivered under this Indenture is initially limited to $172,500,000, and except for Notes authenticated and delivered upon registration or transfer of, or in exchange for, or in lieu of other Notes pursuant to Section 2.05, Section 2.06 and Section 2.07 of the Base Indenture and Section 4.04, Section 5.02 and Section 6.03 hereof. The Company may, without the consent of the Noteholders, reopen this Indenture and issue additional Notes under this Indenture with the same terms and with the same CUSIP number as the Notes in an unlimited aggregate principal amount, provided that no such additional Notes may be issued unless they will be fungible with the Notes for U.S. federal income tax and securities law purposes.

          Section 2.02. Form of Notes. The Notes and the Trustee’s certificate of authentication to be borne by such Notes shall be substantially in the respective forms set forth in Exhibit A, which are incorporated in and made a part of this Indenture.

          Any Global Note may be endorsed with or have incorporated in the text thereof such legends or recitals or changes not inconsistent with the provisions of this Indenture as may be required by the Custodian, the Depositary, any regulatory body or required to comply with any applicable law or regulation thereunder or with the rules and regulations of any securities exchange or automated quotation system upon which the Notes may be listed or traded or designated for issuance or to conform with any usage with respect thereto, or to indicate any special limitations or restrictions to which any particular Notes are subject.

          Any of the Notes may have such letters, numbers or other marks of identification and such notations, legends or endorsements as the Officer executing the same may approve (execution thereof to be conclusive evidence of such approval) and as are not inconsistent with the provisions of this Indenture, or as may be required to comply with any law or with any rule or regulation made pursuant thereto or with any rule or regulation of any securities exchange or automated quotation system on which the Notes may be listed or designated for issuance, or to conform to usage or to indicate any special limitations or restrictions to which any particular Notes are subject.

          A Global Note shall represent such principal amount of the Outstanding Notes as shall be specified therein and shall provide that it shall represent the aggregate principal amount of Outstanding Notes from time to time endorsed thereon and that the aggregate principal amount of Outstanding Notes represented thereby may from time to time be increased or reduced to reflect repurchases, conversions, transfers or exchanges permitted hereby. Any endorsement of a Global Note to reflect the amount of any increase or decrease in the amount of Outstanding Notes represented thereby shall be made by the Trustee or the Custodian, at the direction of the Trustee, in such manner and upon instructions given by the holder of such Notes in accordance with this Indenture. Payment of principal (including any Fundamental Change Repurchase Price), accrued and unpaid interest and Additional Interest, if any, on a Global Note shall be made to the holder of such Note on the date of payment, unless a record date or other means of determining holders eligible to receive payment is provided for herein.

          The terms and provisions contained in the form of Note attached as Exhibit A hereto shall constitute, and are hereby expressly made, a part of this Indenture and, to the extent applicable, the Company and the Trustee, by their execution and delivery of this Indenture, expressly agree to such terms and provisions and to be bound thereby.

          Section 2.03. Date and Denomination of Notes; Payments of Interest. The Notes shall be issuable in registered form without coupons in minimum denominations of $1,000 principal amount and in integral multiples of $1,000 in excess thereof. Each Note shall be dated the date of its authentication and shall bear interest from the date specified on the face of the form of Note attached as Exhibit A hereto. Interest (including Additional Interest, if any) on the Notes shall be computed on the basis of a 360-day year comprised of twelve 30-day months.

          The Person in whose name any Note (or its Predecessor Note) is registered on the Security Register at the close of business on any Interest Record Date with respect to any Interest Payment Date shall be entitled to receive the interest (including Additional Interest, if any) payable on such Interest Payment Date. Interest (including Additional Interest, if any) shall be payable at the office or agency of the Company maintained by the Company for such purposes in The Borough of Manhattan, City of New York, which shall initially be the office of the Trustee. The Company shall pay interest (including Additional Interest, if any) (a) on any Notes in certificated form by check mailed to the address of the Person entitled thereto as it appears in the Security Register or (b) on any Global Note by wire transfer of immediately available funds to the account of the Depositary or its nominee.

ARTICLE 3
DEFAULTS AND REMEDIES

          Section 3.01. Events of Default. Each of the following shall be an “Event of Default”:

          (a) default in the payment in respect of the principal of any Note at its maturity upon required repurchase, upon declaration of acceleration or otherwise;

          (b) default in the payment of any interest (including Additional Interest, if any) upon any Note when it becomes due and payable, and continuance of such default for a period of 30 days;

          (c) default in the performance, or breach, of any covenant or agreement of the Company in this Indenture (other than a covenant or agreement a default in whose performance or whose breach is specifically dealt with in clauses (a), (b), (d), (f) or (g) of this Section 3.01), and continuance of such default or breach for a period of 60 days after written notice thereof has been given to the Company by the Trustee or to the Company and the Trustee by the holders of at least 25% in aggregate principal amount of the Outstanding Notes;

          (d) a default or defaults under any bonds, debentures, notes or other evidences of indebtedness (other than the Notes) by the Company or any Subsidiary that is a Significant Subsidiary (or any group of Subsidiaries that, taken as a whole, would constitute a Significant Subsidiary) having, individually or in the aggregate, a principal or similar amount outstanding of at least $75.0 million, whether such indebtedness now exists or shall hereafter be created, which default or defaults shall have resulted in the acceleration of the maturity of such indebtedness prior to its express maturity or shall constitute a failure to pay at least $75.0 million of such indebtedness when due and payable after the expiration of any applicable grace period with respect thereto, without such indebtedness having been paid or discharged within a period of 30 days after the occurrence of such indebtedness becoming or being declared due and payable or the failure to pay, as the case may be;

          (e) the failure to comply with the obligations to convert the Notes into Common Stock, cash or a combination of cash and Common Stock, as applicable, in accordance with Section 5.02 upon exercise of a holder’s conversion right and such failure continues for five days;

          (f) the failure to timely issue a Fundamental Change Company Notice in accordance with Section 6.01(b); or

          (g) (i) the Company, any Subsidiary that is a Significant Subsidiary or any group of Subsidiaries that, taken as a whole, would constitute a Significant Subsidiary, pursuant to or within the meaning of the Bankruptcy Law:

     (a) commences a voluntary case,

     (b) consents to the entry of an order for relief against it in an involuntary case,

     (c) consents to the appointment of a custodian of it or for all or substantially all of its property,

     (d) makes a general assignment for the benefit of its creditors, or

     (e) generally is not paying its debts as they become due; or

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

     (a) is for relief against the Company or any Subsidiary that is a Significant Subsidiary or any group of Subsidiaries that, taken together, would constitute a Significant Subsidiary, in an involuntary case;

     (b) appoints a custodian of the Company or any Subsidiary that is a Significant Subsidiary or any group of Subsidiaries that, taken together, would constitute a Significant Subsidiary or for all or substantially all of the property of the Company or any of its Subsidiaries; or

     (c) orders the liquidation of the Company or any Subsidiary that is a Significant Subsidiary or any group of Subsidiaries that, taken together, would constitute a Significant Subsidiary and the order or decree remains unstayed and in effect for 60 consecutive days.

          Section 3.02. Acceleration. In case one or more Events of Default shall have occurred and be continuing (whatever the reason for such Event of Default and whether it shall be voluntary or involuntary or be effected by operation of law or pursuant to any judgment, decree or order of any court or any order, rule or regulation of any administrative or governmental body), then, and in each and every such case (other than an Event of Default specified in Section 3.01(g) with respect to the Company (and not solely with respect to a Significant Subsidiary of the Company, or a group of Subsidiaries of the Company that in aggregate would constitute a Significant Subsidiary of the Company), unless the principal of all of the Notes shall have already become due and payable (or waived), either the Trustee or the holders of at least 25% in aggregate principal amount of the Notes then Outstanding by notice in writing to the Company (and to the Trustee if given by Noteholders), may declare 100% of the principal of and accrued and unpaid interest and accrued and unpaid Additional Interest, if any, on all the Notes to be due and payable immediately, and upon any such declaration the same shall become and shall automatically be immediately due and payable, anything in this Indenture or in the Notes contained to the contrary notwithstanding.

          If an Event of Default specified in Section 3.01(g) with respect to the Company (and not solely with respect to a Significant Subsidiary of the Company, or a group of Subsidiaries of the Company that in aggregate would constitute a Significant Subsidiary of the Company) occurs and is continuing, the principal of all the Notes and accrued and unpaid interest and accrued and unpaid Additional Interest, if any, shall be immediately due and payable. This provision, however, is subject to the conditions that if, at any time after the principal of the Notes shall have been so declared due and payable, and before any judgment or decree for the payment of the monies due shall have been obtained or entered as hereinafter provided, the Company shall pay or shall deposit with the Trustee a sum sufficient to pay installments of accrued and unpaid interest and accrued and unpaid Additional Interest, if any, upon all Notes and the principal of any and all Notes that shall have become due otherwise than by acceleration (with interest on overdue installments of accrued and unpaid interest and accrued and unpaid Additional Interest, if any (to the extent that payment of such interest is enforceable under applicable law), and on such principal at the rate borne by the Notes at such time) and amounts due to the Trustee pursuant to Section 7.06 of the Base Indenture, then and in every such case the holders of a majority in aggregate principal amount of the Notes then Outstanding, by written notice to the Company and to the Trustee, may waive all Defaults or Events of Default with respect to the Notes (other than a Default or an Event of Default resulting from a failure to repurchase any Notes when required upon a Fundamental Change or a failure to deliver, upon conversion, cash, shares of Common Stock or a combination of cash and shares of Common Stock, as applicable, due upon conversion) and rescind and annul such declaration and its consequences (other than a declaration or consequences, as the case may be, resulting from a failure to repurchase any Notes when required upon a Fundamental Change or a failure to deliver, upon conversion, cash, shares of Common Stock or a combination of cash and shares of Common Stock, as applicable, due upon conversion) and such Default (other than a Default

resulting from a failure to repurchase any Notes when required upon a Fundamental Change or a failure to deliver, upon conversion, cash, shares of Common Stock or a combination of cash and shares of Common Stock, as applicable, due upon conversion) shall cease to exist, and any Event of Default arising therefrom (other than a Default resulting from a failure to repurchase any Notes when required upon a Fundamental Change or a failure to deliver, upon conversion, cash, shares of Common Stock or a combination of cash and shares of Common Stock, as applicable, due upon conversion) shall be deemed to have been cured for every purpose of this Indenture; but no such waiver or rescission and annulment shall extend to or shall affect any subsequent Default or Event of Default, or shall impair any right consequent thereon. In case the Trustee shall have initiated proceedings to enforce any right with respect to the Notes and such proceedings shall have been discontinued or abandoned because of such rescission or annulment or for any other reason or shall have been determined adversely to the Trustee, then and in every such case, subject to any determination in such proceedings, the Company and the Trustee shall be restored respectively to their former positions and rights hereunder, and all rights, remedies and powers of the Company and the Trustee shall continue as though no such proceedings had been taken.

          Section 3.03. Collection of Indebtedness and Suits for Enforcement by Trustee.

          (a) The Company covenants that (i) in case it shall default in the payment of any installment of interest (including Additional Interest, if any) on any of the Notes, and such default shall have continued for a period of 90 Business Days, (ii) in case it shall default in the payment of the principal of any of the Notes when the same shall have become due and payable, whether upon maturity of the Notes or upon redemption or upon declaration or otherwise, (iii) in case it shall fail to repurchase any Notes when required or (iv) in case it shall fail to deliver cash, shares of Common Stock or a combination of cash and shares of Common Stock, as applicable, when required, upon conversion of the Notes, then, upon demand of the Trustee, the Company will pay to the Trustee, for the benefit of the holders of the Notes, the whole amount that then shall have become due and payable on all such Notes for principal or interest (including Additional Interest, if any), or both, as the case may be, with interest upon the overdue principal and (to the extent that payment of such interest is enforceable under applicable law) upon overdue installments of interest (including Additional Interest, if any) at the rate per annum expressed in the Notes; and, in addition thereto, such further amount as shall be sufficient to cover the costs and expenses of collection, and the amount payable to the Trustee under Section 7.06 of the Base Indenture.

          (b) If the Company shall fail to pay such amounts forthwith upon such demand, the Trustee, in its own name and as trustee of an express trust, shall be entitled and empowered to institute any action or proceedings at law or in equity for the collection of the sums so due and unpaid, and may prosecute any such action or proceeding to judgment or final decree, and may enforce any such judgment or final decree against the Company or other obligor upon the Notes and collect the moneys adjudged or decreed to be payable in the manner provided by law or equity out of the property of the Company or other obligor upon the Notes, wherever situated.

          (c) In case of any receivership, insolvency, liquidation, bankruptcy, reorganization, readjustment, arrangement, composition or judicial proceedings affecting the Company, or its creditors or property, the Trustee shall have power to intervene in such proceedings and take any action therein that may be permitted by the court and shall (except as may be otherwise provided by law) be entitled to file such proofs of claim and other papers and documents as may be necessary or advisable in order to have the claims of the Trustee and of the holders of Notes allowed for the entire amount due and payable by the Company under the Indenture at the date of institution of such proceedings and for any additional amount that may become due and payable by the Company after such date, and to collect and receive any moneys or other property payable or deliverable on any such claim, and to distribute the same after the deduction of the amount payable to the Trustee under Section 7.06 of the Base Indenture; and any receiver, assignee or trustee in bankruptcy or reorganization is hereby authorized by each of the holders of Notes to make such payments to the Trustee, and, in the event that the Trustee shall consent to the making of such

payments directly to such Noteholders, to pay to the Trustee any amount due it under Section 7.06 of the Base Indenture.

          (d) All rights of action and of asserting claims under this Indenture, or under any of the terms established with respect to Notes, may be enforced by the Trustee without the possession of any of such Notes, or the production thereof at any trial or other proceeding relative thereto, and any such suit or proceeding instituted by the Trustee shall be brought in its own name as trustee of an express trust, and any recovery of judgment shall, after provision for payment to the Trustee of any amounts due under Section 7.06 of the Base Indenture, be for the ratable benefit of the holders of the Notes.

          In case of an Event of Default hereunder, the Trustee may in its discretion proceed to protect and enforce the rights vested in it by this Indenture by such appropriate judicial proceedings as the Trustee shall deem appropriate to protect and enforce any of such rights, either at law or in equity or in bankruptcy or otherwise, whether for the specific enforcement of any covenant or agreement contained in the Indenture or in aid of the exercise of any power granted in this Indenture, or to enforce any other legal or equitable right vested in the Trustee by this Indenture or by law.

          Nothing contained herein shall be deemed to authorize the Trustee to authorize or consent to or accept or adopt on behalf of any Noteholder any plan of reorganization, arrangement, adjustment or composition affecting the Securities of that series or the rights of any holder thereof or to authorize the Trustee to vote in respect of the claim of any Noteholder in any such proceeding.

          Section 3.04. Application of Moneys Collected. Any moneys collected by the Trustee pursuant to this Article with respect to the Notes shall be applied in the following order, at the date or dates fixed by the Trustee and, in case of the distribution of such moneys on account of principal (or premium, if any) or interest (including Additional Interest, if any), upon presentation of the Notes, and notation thereon of the payment, if only partially paid, and upon surrender thereof if fully paid:

FIRST: To the payment of all obligations of the Company under Section 7.06(a) of the Base Indenture to compensate and indemnify the Trustee and to pay or reimburse the Trustee for reasonable expenses, disbursements and advances and the Trustee shall have a lien upon such moneys collected to satisfy such payment obligations;

SECOND: To the payment of the amounts then due and unpaid upon the Notes for principal and interest (including Additional Interest, if any), including, for the avoidance of doubt, amounts payable in respect of any Conversion Obligation payable in settlement thereof, in respect of which or for the benefit of which such money has been collected, ratably, without preference or priority of any kind, according to the amounts due and payable on such Notes for principal and interest (including Additional Interest, if any), respectively; and

THIRD: To the payment of the remainder, if any, to the Company or any other Person lawfully entitled thereto.

          Section 3.05. Limitation on Suits. No holder of any Note shall have any right by virtue of or by availing itself of any provision of this Indenture to institute any suit, action or proceeding in equity or at law upon or under or with respect to this Indenture, or for the appointment of a receiver, trustee, liquidator, custodian or other similar official, or for any other remedy hereunder, unless (i) such holder previously shall have given to the Trustee written notice of an Event of Default and of the continuance thereof, as hereinbefore provided; (ii) the holders of not less than 25% in aggregate principal amount of the Notes then Outstanding shall have made written request to the Trustee to institute such

action, suit or proceeding in its own name as Trustee hereunder; (iii) such holders shall have offered to the Trustee such security or indemnity reasonably satisfactory to it against any loss, liability or expense to be incurred therein or thereby, (iv) the Trustee for sixty days after its receipt of such notice, request and offer of indemnity, shall have neglected or refused to institute any such action, suit or proceeding and (v) no direction that, in the opinion of the Trustee, is inconsistent with such written request shall have been given to the Trustee by the holders of a majority in principal amount of the Notes Outstanding within such sixty-day period pursuant to Section 3.08; it being understood and intended, and being expressly covenanted by the taker and holder of every Note with every other taker and holder and the Trustee that no one or more Noteholders shall have any right in any manner whatever by virtue of or by availing of any provision of this Indenture to affect, disturb or prejudice the rights of any other Noteholder, or to obtain or seek to obtain priority over or preference to any other such holder, or to enforce any right under this Indenture, except in the manner herein provided and for the equal, ratable and common benefit of all Noteholders (except as otherwise provided herein). For the protection and enforcement of this Section 3.05, each and every Noteholder and the Trustee shall be entitled to such relief as can be given either at law or in equity.

          Notwithstanding any other provision of this Indenture and any provision of any Note, the right of any Noteholder to receive payment of the principal of (including the Fundamental Change Repurchase Price upon repurchase pursuant to Section 6.01), and accrued and unpaid interest and accrued and unpaid Additional Interest, if any, on such Note, on or after the respective due dates expressed or provided for in such Note or in this Indenture, or to institute suit for the enforcement of any such payment on or after such respective dates against the Company shall not be impaired or affected without the consent of such Noteholder.

          Anything in this Indenture or the Notes to the contrary notwithstanding, the holder of any Note, without the consent of either the Trustee or the holder of any other Note, in its own behalf and for its own benefit, may enforce, and may institute and maintain any proceeding suitable to enforce, its rights of conversion as provided herein.

          Section 3.06. Rights and Remedies Cumulative; Delay or Omission Not Waiver. Except as otherwise provided in Section 2.07 of the Base Indenture, all powers and remedies given by this Article to the Trustee or to the Noteholders shall, to the extent permitted by law, be deemed cumulative and not exclusive of any other powers and remedies available to the Trustee or the holders of the Notes, by judicial proceedings or otherwise, to enforce the performance or observance of the covenants and agreements contained in this Indenture or otherwise established with respect to such Securities.

          No delay or omission of the Trustee or of any holder of any of the Notes to exercise any right or power accruing upon any Event of Default occurring and continuing as aforesaid shall impair any such right or power, or shall be construed to be a waiver of any such default or an acquiescence therein; and, subject to the provisions of Section 3.05, every power and remedy given by this Article or by law to the Trustee or the Noteholders may be exercised from time to time, and as often as shall be deemed expedient, by the Trustee or by the Noteholders.

          Section 3.07. Additional Interest. Notwithstanding anything in this Indenture or in the Notes to the contrary, if the Company so elects, the sole remedy of Noteholders for an Event of Default relating to any obligation to file reports as required under Section 5.03 of the Base Indenture (as amended by Section 7.01 hereof) shall, for the first 180 days after the occurrence of such an Event of Default which will be the 60th day after written notice is provided to the Company in accordance with Section 3.01(c)), consist exclusively of the right to receive Additional Interest on the Notes at an annual rate equal to (x) 0.25% of the Outstanding principal amount of the Notes for the first 90 days an Event of Default is continuing in such 180-day period and (y) 0.50% of the Outstanding principal amount of the Notes for the

remaining 90 days an Event of Default is continuing in such 180-day period. Additional Interest shall be payable in arrears on each Interest Payment Date following the occurrence of such Event of Default in the same manner as regular interest on the Notes. The Company may elect to pay Additional Interest as the sole remedy under this Section 3.07 by giving notice to the holders, the Trustee and Paying Agent of such election on or before the close of business on the 5th Business Day after the date on which such Event of Default otherwise would occur. If the Company fails to timely give such notice or pay Additional Interest, the Notes will be immediately subject to acceleration as provided in Section 3.02. On the 181st day after such Event of Default (if such violation is not cured or waived prior to such 181st day), the Notes will be subject to acceleration as provided in Section 3.02. This Section 3.07 shall not affect the rights of the Noteholders in the event of the occurrence of any other Event of Default. In the event the Company does not elect to pay Additional Interest upon an Event of Default in accordance with this Section 3.07, the Notes will be subject to acceleration as provided in Section 3.02. Whenever in the Base Indenture there is mentioned, in any context, the payment of interest on, or in respect of, any Note, such mention shall be deemed to include mention of the payment of “Additional Interest” provided for in this Section 3.07 to the extent that, in such context, Additional Interest is, was or would be payable in respect thereof pursuant to the provisions of such sections, and express mention of the payment of Additional Interest (if applicable) in any provision shall not be construed as excluding Additional Interest in those provisions where such express mention is not made.

          Section 3.08. Direction of Proceedings and Waiver of Defaults by Majority of Noteholders. The holders of a majority in aggregate principal amount of the Notes at the time Outstanding shall have the right to direct the time, method and place of conducting any proceeding for any remedy available to the Trustee or exercising any trust or power conferred on the Trustee with respect to Notes; provided, however, that (a) such direction shall not be in conflict with any rule of law or with this Indenture, and (b) the Trustee may take any other action deemed proper by the Trustee that is not inconsistent with such direction. The Trustee may refuse to follow any direction that it determines is unduly prejudicial to the rights of any other holder or that would involve the Trustee in personal liability. The holders of a majority in aggregate principal amount of the Notes at the time Outstanding may on behalf of the holders of all of the Notes waive any past Default or Event of Default hereunder (except (i) a default with respect to the nonpayment of principal or interest, including Additional Interest, if any, (ii) a failure by the Company to repurchase any Notes when required or (iii) a failure by the Company to deliver cash, shares of Common Stock or a combination of cash and shares of Common Stock, as applicable, upon conversion of the Notes) and rescind any acceleration with respect to the Notes and its consequences if (a) rescission would not conflict with any judgment or decree of a court of competent jurisdiction and (b) all existing Events of Default, other than the nonpayment of the principal of and interest, including Additional Interest, if any, on the Notes that have become due solely by such declaration of acceleration, have been cured or waved. Upon any such waiver the Company, the Trustee and the holders of the Notes shall be restored to their former positions and rights hereunder; but no such waiver shall extend to any subsequent or other Default or Event of Default or impair any right consequent thereon. Whenever any Default or Event of Default hereunder shall have been waived as permitted by this Section 3.08, said Default or Event of Default shall for all purposes of the Notes and this Indenture be deemed to have been cured and to be not continuing; but no such waiver shall extend to any subsequent or other Default or Event of Default or impair any right consequent thereon.

          Section 3.09. Notice of Defaults. The Trustee shall, within ninety days after the occurrence and continuance of a Default of which a Responsible Officer has actual knowledge, mail to all Noteholders as the names and addresses of such holders appear upon the Security Register, notice of all Defaults known to a Responsible Officer, unless such Defaults shall have been cured or waived before the giving of such notice; and provided that, except in the case of a Default in the payment of the principal of, accrued and unpaid interest or accrued and unpaid Additional Interest, if any, on any of the Notes, including without limiting the generality of the foregoing any Default in the payment of any Fundamental

Change Repurchase Price, then in any such event the Trustee shall be protected in withholding such notice if and so long as a committee of Responsible Officers of the Trustee in good faith determine that the withholding of such notice is in the interests of the Noteholders. The Company is required to deliver to the Trustee, within 30 days of the occurrence thereof, written notice of any events which would constitute a default, their status and what action the Company is taking or proposes to take in respect thereof.

          Section 3.10. Undertaking to Pay Costs. All parties to this Indenture agree, and each holder of any Note by its acceptance thereof shall be deemed to have agreed, that any court may, in its discretion, require, in any suit for the enforcement of any right or remedy under this Indenture, or in any suit against the Trustee for any action taken or omitted by it as Trustee, the filing by any party litigant in such suit of an undertaking to pay the costs of such suit and that such court may in its discretion assess reasonable costs, including reasonable attorneys’ fees and expenses, against any party litigant in such suit, having due regard for the merits and good faith of the claims or defenses made by such party litigant; provided that the provisions of this Section 3.10 (to the extent permitted by law) shall not apply to any suit instituted by the Trustee, to any suit instituted by any Noteholder, or group of Noteholders, holding in the aggregate more than 10% in principal amount of the Notes at the time Outstanding, or to any suit instituted by any Noteholder for the enforcement of the payment of the principal of accrued and unpaid interest or accrued and unpaid Additional Interest, if any, on any Note (including, but not limited to, the Fundamental Change Repurchase Price with respect to the Notes being repurchased as provided in this Indenture) on or after the due date expressed or provided for in such Note or to any suit for the enforcement of the right to convert any Note in accordance with the provisions of Article 5.

ARTICLE 4
SUPPLEMENTAL INDENTURES

          Section 4.01. Supplemental Indentures Without Consent of Noteholders. The Company and the Trustee, at the Company’s expense, may from time to time and at any time enter into an indenture or indentures supplemental to this Indenture for one or more of the following purposes:

          (a) to cure any ambiguity, omission, defect or inconsistency in this Indenture or the Notes in a manner that does not materially adversely affect the rights of any holder;

          (b) to conform the terms of the Indenture or the Notes to the description thereof in the Prospectus;

          (c) to provide for the assumption by a Successor Company of the obligations of the Company under this Indenture pursuant to Article 10 of the Base Indenture (as amended by Section 7.01 hereof);

          (d) to add guarantees with respect to the Notes;

          (e) to secure the Notes;

          (f) to add to the covenants of the Company such further covenants, restrictions or conditions for the benefit of the Noteholders or surrender any right or power conferred upon the Company;

          (g) to make any change that does not materially adversely affect the rights of any holder of Notes or to execute and deliver a supplemental indenture pursuant to the provisions of Section 5.06 of this Supplemental Indenture;

          (h) to appoint a successor Trustee with respect to the Notes; or

          (i) to comply with any requirements of the Trust Indenture Act.

          For the avoidance of doubt, this Article 4 shall not prevent the Company from entering into indentures supplemental to the Base Indenture for the purpose of establishing or amending the terms and conditions applicable to any series of Securities other than the Notes; provided that such supplemental indenture shall have no applicability to the Notes other than as permitted hereby and provided therein.

          Upon the written request of the Company, the Trustee is hereby authorized to join with the Company in the execution of any such supplemental indenture, to make any further appropriate agreements and stipulations that may be therein contained, but the Trustee shall not be obligated to, but may in its discretion, enter into any supplemental indenture that affects the Trustee’s own rights, duties or immunities under this Indenture or otherwise.

          Any supplemental indenture authorized by the provisions of this Section 4.01 may be executed by the Company and the Trustee without the consent of the holders of any of the Notes at the time Outstanding, notwithstanding any of the provisions of Section 4.02.

          Section 4.02. Supplemental Indentures With Consent of Noteholders. With the consent of the holders of at least a majority in aggregate principal amount of the Notes at the time Outstanding (including, without limitation, consents obtained in connection with a purchase of, or tender offer or exchange offer for, Notes), the Company and the Trustee, at the Company’s expense, may from time to time and at any time enter into an indenture or indentures supplemental to this Indenture for the purpose of adding any provisions to or changing in any manner or eliminating any of the provisions of this Indenture or any supplemental indenture or of modifying in any manner the rights of the holders of the Notes or waiving any past default; provided, however, that no such supplemental indenture shall:

          (a) reduce the percentage in aggregate principal amount of Notes Outstanding necessary to modify or amend this Indenture or to waive any past Default or Event of Default;

          (b) reduce the rate or extend the stated time for payment of interest, including Additional Interest, if any, on any Note;

          (c) reduce the principal of, or extend the Maturity Date of, any Note;

          (d) make any change that impairs or adversely affects the conversion rights of any Notes;

          (e) reduce the Fundamental Change Repurchase Price of any Note or amend or modify in any manner adverse to the holders of the Notes the Company’s obligation to make such payments, whether through an amendment or waiver of provisions in the covenants, definitions or otherwise;

          (f) make any Note payable in a currency other than that stated in the Note or change any Note’s place of payment;

          (g) change the ranking of the Notes; or

          (h) impair the right of any holder to receive payment of principal of and interest, including Additional Interest, if any, on such holder’s Notes on or after the due dates therefor or to institute suit for the enforcement of any payment on or with respect to such holder’s Note,

in each case without the consent of each holder of an Outstanding Note affected.

          Upon the written request of the Company, and upon the filing with the Trustee of evidence of the consent of Noteholders as aforesaid and subject only to Section 4.05, the Trustee shall join with the Company in the execution of such supplemental indenture unless such supplemental indenture affects the Trustee’s own rights, duties or immunities under this Indenture or otherwise, in which case the Trustee may in its discretion, but shall not be obligated to, enter into such supplemental indenture.

          It shall not be necessary for the consent of the Noteholders under this Section 4.02 to approve the particular form of any proposed supplemental indenture, but it shall be sufficient if such consent shall approve the substance thereof. After an amendment under this Indenture becomes effective, the Company shall provide all the holders a notice briefly describing such amendment. However, the failure to give such notice to all the holders, or any defect in the notice, will not impair or affect the validity of the amendment.

          Section 4.03. Effect of Supplemental Indentures. Upon the execution of any supplemental indenture pursuant to the provisions of this Article 4, this Indenture shall be and be deemed to be modified and amended in accordance therewith and the respective rights, limitation of rights, obligations, duties and immunities under this Indenture of the Trustee, the Company and the Noteholders shall thereafter be determined, exercised and enforced hereunder subject in all respects to such modifications and amendments and all the terms and conditions of any such supplemental indenture shall be and be deemed to be part of the terms and conditions of this Indenture for any and all purposes.

          Section 4.04. Notation on Notes. Notes authenticated and delivered after the execution of any supplemental indenture pursuant to the provisions of this Article 4 may, at the Company’s expense, bear a notation as to any matter provided for in such supplemental indenture. If the Company shall so determine, new Notes so modified as to conform, in the opinion of the Board of Directors, to any modification of this Indenture contained in any such supplemental indenture may, at the Company’s expense, be prepared and executed by the Company, authenticated by the Trustee or Authenticating Agent and delivered in exchange for the Notes then Outstanding, upon surrender of such Notes then Outstanding.

          Section 4.05. Evidence of Compliance of Supplemental Indenture to Be Furnished to Trustee. In addition to the documents required by Section 13.07 of the Base Indenture, the Trustee shall be entitled to receive, upon request, an Officers’ Certificate and/or an Opinion of Counsel (each as defined in Section 1.01 of the Base Indenture) to the effect that any supplemental indenture executed pursuant hereto complies with the requirements of this Article 4 and is permitted or authorized by the Indenture and may rely on any such Officers’ Certificate and/or Opinion of Counsel as conclusive evidence that such supplemental indenture so complies and is so permitted or authorized.

          Section 4.06. Notice of Execution of Supplemental Indenture. After the execution by the Company and the Trustee of any supplemental indenture with respect to the Notes pursuant to the provisions of this Article, the Trustee shall provide a written notice, prepared by the Company, setting forth in general terms the substance of such supplemental indenture, to the Noteholders affected thereby as their names and addresses appear upon the Security Register. Any failure of the Trustee to provide

such notice, or any defect therein, shall not, however, in any way impair or affect the validity of any such supplemental indenture.

ARTICLE 5
CONVERSION OF NOTES

          Section 5.01. Conversion Privilege.

          (a) Upon compliance with the provisions of this Article 5, a Noteholder shall have the right, at such holder’s option, to convert all or any portion (if the portion to be converted is $1,000 principal amount or an integral multiple thereof) of such Note prior to the close of business on the second Scheduled Trading Day immediately preceding the Maturity Date, in each case, at an initial conversion rate (the “Conversion Rate”) of ###-###-#### shares of Common Stock (subject to adjustment as provided in Section 5.03 and Section 5.04) per $1,000 principal amount of Notes (subject to the settlement provisions of Section 5.02, the “Conversion Obligation”).

          Section 5.02. Conversion Procedure.

          (a) Subject to this Section 5.02, upon any conversion of any Note, the Company shall deliver to converting Noteholders, in respect of each $1,000 principal amount of Notes being converted, solely cash, solely shares of Common Stock or a combination of cash and Common Stock (the “Settlement Amount”), at the Company’s election, as set forth in this Section 5.02.

     (i) All conversions on or after March 15, 2014 will be settled using the same Settlement Method.

     (ii) Prior to March 15, 2014, the Company will elect (or be deemed to have elected) the same Settlement Method for all conversions occurring on any given Conversion Date. Except for any conversions that occur on or after March 15, 2014, the Company need not elect the same Settlement Method with respect to conversions that occur on different Trading Days.

     (iii) If, in respect of any Conversion Date (or the period beginning on, and including, March 15, 2014 and ending on, and including, the second Scheduled Trading Day immediately preceding the Maturity Date, as the case may be), the Company elects to deliver a notice (the “Settlement Notice”) of the relevant Settlement Method in respect of such Conversion Date (or such period, as the case may be), the Company, through the Trustee, shall deliver such Settlement Notice to converting Noteholders no later than the second Business Day immediately following the relevant Conversion Date. Such Settlement Notice shall specify whether the Company shall satisfy its Conversion Obligation by (A) delivering solely shares of Common Stock, (B) paying solely cash or (C) paying and delivering, as the case may be, a combination of cash and shares of Common Stock. In the case of an election to pay and deliver, as the case may be, a combination of cash and shares of Common Stock, the relevant Settlement Notice shall indicate the Specified Dollar Amount. If the Company does not deliver a Settlement Notice, the Company will be deemed to have elected to deliver solely shares of Common Stock in respect of its Conversion Obligation.

     (iv) The Settlement Amount in respect of any conversion of Notes shall be computed as follows:

     (A) if the Company elects to satisfy its Conversion Obligation in respect of such conversion by delivering solely Common Stock, the Company will deliver to the

converting Noteholder a number of shares of Common Stock equal to (1)(i) the aggregate principal amount of Notes to be converted, divided by (ii) $1,000, multiplied by (2) the then-applicable Conversion Rate on the date the converting Noteholder becomes a record owner of Common Stock;

     (B) if the Company elects to satisfy its Conversion Obligation in respect of such conversion by paying solely cash, the Company shall pay to the converting Noteholder, cash in an amount per $1,000 principal amount of Notes being converted equal to the sum of the Daily Conversion Values for each of the twenty consecutive Trading Days during the related Cash Settlement Averaging Period; and

     (C) if the Company elects to satisfy its Conversion Obligation in respect of such conversion by paying and delivering, as the case may be, a combination of cash and shares of Common Stock, if any, the Company shall pay and deliver to the converting Noteholder, as the case may be, in respect of each $1,000 principal amount of Notes being converted, a Settlement Amount equal to the sum of the Daily Settlement Amounts for each of the twenty consecutive Trading Days during the related Cash Settlement Averaging Period.

     (v) The Company will also deliver to each converting Noteholder cash in lieu of fractional shares of Common Stock as set forth pursuant to clause (l) below.

     (vi) The Daily Settlement Amounts (if applicable) and the Daily Conversion Values (if applicable) shall be determined by the Company promptly following the last day of the Cash Settlement Averaging Period. Promptly after such determination of the Daily Settlement Amounts or the Daily Conversion Values, as the case may be, and the amount of cash deliverable in lieu of fractional shares (if any), the Company shall notify the Trustee and the Conversion Agent of the Daily Settlement Amounts or the Daily Conversion Values, as the case may be, and the amount of cash deliverable in lieu of fractional shares of Common Stock. The Trustee and the Conversion Agent shall be entitled to rely exclusively on the notice given by the Company and shall have no responsibility for any such determination.

          (b) Before any holder of a Note shall be entitled to convert the same as set forth above, such holder shall (i) in the case of a Global Note, comply with the procedures of the Depositary in effect at that time and, if required by Section 5.02(h), pay funds equal to the amount of interest (including Additional Interest, if any) payable on the next Interest Payment Date to which such holder is not entitled as set forth in Section 5.02(h) and, as set forth in Section 5.02(e), all transfer or similar taxes, if any, and (ii) in the case of a Note issued in certificated form, (1) complete and manually sign and deliver an irrevocable notice to the Conversion Agent in the form on the reverse of such certificated Note (or a facsimile thereof) (Exhibit B hereto) (a “Notice of Conversion”) at the office of the Conversion Agent and shall state in writing therein the principal amount of Notes to be converted and the name or names (with addresses) in which such holder wishes the certificate or certificates for any shares of Common Stock, if any, to be delivered upon settlement of the Conversion Obligation to be registered, (2) surrender such Notes, duly endorsed to the Company or in blank, at the office of the Conversion Agent, (3) if required by Section 5.02(h), pay funds equal to interest (including Additional Interest, if any) payable on the next Interest Payment Date to which such holder is not entitled as set forth in Section 5.02(h), (4) furnish appropriate endorsements and transfer documents, if any, and (5) pay all transfer or similar taxes, if any, as set forth in Section 5.02(e). The Trustee (and if different, the relevant Conversion Agent) shall notify the Company of any conversion pursuant to this Article 5 on the Conversion Date. No Notice of Conversion with respect to any Notes may be surrendered by a holder thereof if such holder has also delivered a Fundamental Change Repurchase Notice to the Company in respect of such Notes and not

validly withdrawn such Fundamental Change Repurchase Notice in accordance with Section 6.02, unless the Company defaults in the payment of the Fundamental Change Repurchase Price.

          (c) A Note shall be deemed to have been converted immediately prior to the close of business on the date (the “Conversion Date”) that the holder has complied with all applicable requirements set forth in clause (b) of this Section 5.02. The Company shall pay or deliver, as the case may be, such cash and/or shares of Common Stock on the third Trading Day immediately following the last Trading Day of the Cash Settlement Averaging Period; provided, that if the Company elects to fulfill its Conversion Obligation solely in shares of Common Stock, the Company shall deliver such Common Stock on the third Trading Day immediately following the relevant Conversion Date; provided, further, that if prior to the relevant Conversion Date, the Common Stock has been replaced by Reference Property consisting solely of cash, pursuant to Section 5.06(b), the Company shall pay such cash on the third Trading Day immediately following the relevant Conversion Date. Notwithstanding the foregoing, if any information required to calculate the Conversion Obligation is not available as of the applicable settlement date, the Company will deliver the additional shares of Common Stock resulting from such adjustment on the third Trading Day after the earliest Trading Day on which such calculation can be made. If any shares of Common Stock are due to converting Noteholders, the Company shall issue or cause to be issued, and deliver to the Conversion Agent or to such Noteholder, or such Noteholder’s nominee or nominees, certificates or a book-entry transfer through the Depositary for the number of full shares of Common Stock to which such Noteholder shall be entitled in satisfaction of such Conversion Obligation.

          (d) In case any Note 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 Note so surrendered, without charge to such holder, a new Note or Notes in authorized denominations in an aggregate principal amount equal to the unconverted portion of the surrendered Note.

          (e) If a holder submits a Note for conversion, the Company shall pay all stamp and other duties, if any, that may be imposed by the United States or any political subdivision thereof or taxing authority thereof or therein with respect to the issuance of shares of Common Stock, if any, upon the conversion. However, the holder shall pay any such tax that is due because the holder requests any shares of Common Stock to be issued in a name other than the holder’s name. The Conversion Agent may refuse to deliver the certificates representing the shares of Common Stock being issued in a name other than the holder’s name until the Trustee receives a sum sufficient to pay any tax that will be due because the shares are to be issued in a name other than the holder’s name. Nothing herein shall preclude any tax withholding required by law or regulations.

          (f) Except as provided in Section 5.04, no adjustment shall be made for dividends on any shares of Common Stock issued upon the conversion of any Note as provided in this Article.

          (g) Upon the conversion of an interest in a Global Note, the Trustee, or the Custodian at the direction of the Trustee, shall make a notation on such Global Note as to the reduction in the principal amount represented thereby. The Company shall notify the Trustee in writing of any conversion of Notes effected through any Conversion Agent other than the Trustee.

          (h) Upon conversion, a Noteholder shall not receive any additional cash payment for accrued and unpaid interest and Additional Interest, if any, except as set forth in this Section 5.02(h). The Company’s settlement of the Conversion Obligations pursuant to Section 5.02 shall be deemed to satisfy its obligation to pay the principal amount of the Note and accrued and unpaid interest and Additional Interest, if any, to, but not including, the Conversion Date. As a result, accrued and unpaid interest and Additional Interest, if any, to, but not including, the Conversion Date shall be deemed to be paid in full

rather than cancelled, extinguished or forfeited. Notwithstanding the preceding sentence, if Notes are converted after the close of business on a Interest Record Date, holders of such Notes as of the close of business on the Interest Record Date will receive the interest and Additional Interest, if any, payable on such Notes on the corresponding Interest Payment Date notwithstanding the conversion. Notes surrendered for conversion during the period from the close of business on any Interest Record Date to the opening of business on the corresponding Interest Payment Date must be accompanied by payment of an amount equal to the interest and Additional Interest, if any, payable on the Notes so converted; provided, however, that no such payment shall be required (1) if the Company has specified a Fundamental Change Repurchase Date that is after a Interest Record Date but on or prior to the corresponding Interest Payment Date, (2) to the extent of any Defaulted Interest, if any, existing at the time of conversion with respect to such Note or (3) if the Notes are surrendered for conversion after the close of business on the Interest Record Date immediately preceding the Maturity Date. Except as set forth in this Section 5.02(h), no payment or adjustment will be made for accrued and unpaid interest and Additional Interest, if any, on converted Notes.

          (i) The Person in whose name the certificate for any shares of Common Stock delivered upon conversion is registered shall be treated as a stockholder of record as of the close of business on the relevant Conversion Date (if the Company elects to satisfy the related Conversion Obligation solely in shares of Common Stock) or the last Trading Day of the related Cash Settlement Averaging Period (in the case of any other Settlement Method), as the case may be; provided, however, if such Conversion Date or such last Trading Day of the Cash Settlement Averaging Period occurs on any date when the stock transfer books of the Company shall be closed, such occurrence shall not be effective to constitute the Person or Persons entitled to receive any such shares of Common Stock due upon conversion as the record holder or holders of such shares of Common Stock on such date, but such occurrence shall be effective to constitute the Person or Persons entitled to receive such shares of Common Stock as the record holder or holders thereof for all purposes at the close of business on the next succeeding day on which such stock transfer books are open. Upon conversion of a Note, such Note shall cease to be Outstanding and such Person shall no longer be a Noteholder with respect to such Note.

          (j) For each Note surrendered for conversion, if the Company has elected to deliver a combination of cash and shares of Common Stock in respect of its Conversion Obligation, the number of full shares that shall be issued upon conversion thereof shall be computed on the basis of the aggregate Daily Settlement Amounts for the applicable Cash Settlement Averaging Period and any fractional shares remaining after such computation shall be paid in cash. If more than one Note shall be surrendered for conversion at one time by the same holder, the number of full shares that shall be issued upon conversion thereof shall be computed on the basis of the aggregate principal amount of the Notes (or specified portions thereof) so surrendered. The Company shall not issue fractional shares of Common Stock upon conversion of Notes. Instead, the Company shall pay cash in lieu of fractional shares based on the Daily VWAP on the relevant Conversion Date (if the Company elects to satisfy its Conversion Obligation solely in shares of Common Stock) or based on the Daily VWAP on the last Trading Day of the relevant Cash Settlement Averaging Period (in the case of any other Settlement Method).

          Section 5.03. Increased Conversion Rate Applicable to Certain Notes Surrendered in Connection with Make-Whole Fundamental Changes.

          (a) Notwithstanding anything herein to the contrary, the Conversion Rate applicable to each Note that is surrendered for conversion, in accordance with this Article 5, at any time from, and including, the effective date (the “Effective Date”) of a Make-Whole Fundamental Change until, and including, the close of business on the second Scheduled Trading Day immediately preceding the related Fundamental Change Repurchase Date corresponding to such Make-Whole Fundamental Change, or the twentieth Trading Day immediately following the Effective Date of such Make-Whole Fundamental

Change (in the case of a Make-Whole Fundamental Change that does not constitute a Fundamental Change by virtue of the parenthetical in the definition of Make-Whole Fundamental Change) (such period, the “Make-Whole Fundamental Change Period”), shall be increased to an amount equal to the Conversion Rate that would, but for this Section 5.03, otherwise apply to such Note pursuant to this Article 5, plus an amount equal to the Make-Whole Conversion Rate Adjustment.

          As used herein, “Make-Whole Conversion Rate Adjustment” means, with respect to a Make-Whole Fundamental Change, the amount set forth in the following table that corresponds to the Effective Date of such Make-Whole Fundamental Change and the Stock Price for such Make-Whole Fundamental Change, all as determined by the Company:

Make-Whole Conversion Rate Adjustment
(per $1,000 principal amount of Notes)

		Stock Price
Effective Date		$3.97				$4.25				$4.50				$4.75				$5.00				$7.50				$10.00				$12.50				$15.00				$20.00				$25.00				$30.00				$40.00				$60.00
May 13, 2009			33.071				33.071				33.071				33.071				31.713				19.834				14.185				10.868				8.686				5.994				4.409				3.375				2.130				1.000
May 15, 2010			33.071				33.071				33.071				30.998				29.085				17.885				12.775				9.818				7.879				5.486				4.069				3.138				2.006				0.960
May 15, 2011			33.071				32.214				29.622				27.406				25.495				15.041				10.671				8.220				6.630				4.671				3.506				2.735				1.784				0.884
May 15, 2012			33.071				27.934				24.992				22.562				20.534				10.859				7.558				5.834				4.737				3.391				2.589				2.055				1.389				0.736
May 15, 2013			33.071				22.646				18.673				15.571				13.140				4.529				2.997				2.347				1.941				1.439				1.138				0.938				0.687				0.436
May 15, 2014			33.071				16.476				3.404				0.000				0.000				0.000				0.000				0.000				0.000				0.000				0.000				0.000				0.000				0.000

provided, however, that:

     (i) if the actual Stock Price of such Make-Whole Fundamental Change is between two Stock Prices listed in the table above under the row titled “Stock Price,” or if the actual Effective Date of such Make-Whole Fundamental Change is between two Effective Dates listed in the table above in the column immediately below the title “Effective Date,” then the Make-Whole Conversion Rate Adjustment for such Make-Whole Fundamental Change shall be determined by the Company by straight-line interpolation between the Make-Whole Conversion Rate Adjustment set forth for such higher and lower Stock Prices, or for such earlier and later Effective Dates based on a 365 day year, as applicable;

     (ii) if the actual Stock Price of such Make-Whole Fundamental Change is greater than $60.00 per share (subject to adjustment in the same manner as the Stock Price as provided in clause (iii) below), or if the actual Stock Price of such Make-Whole Fundamental Change is less than $3.97 per share (subject to adjustment in the same manner as the Stock Price as provided in clause (iii) below), then the Make-Whole Conversion Rate Adjustment shall be equal to zero and this Section 5.03 shall not require the Company to increase the Conversion Rate with respect to such Make-Whole Fundamental Change;

     (iii) if an event occurs that requires, pursuant to this Article 5 (other than solely pursuant to this Section 5.03), an adjustment to the Conversion Rate, then, on the date and at the time such adjustment is so required to be made, each price set forth in the table above under the row titled “Stock Price” shall be deemed to be adjusted so that such Stock Price, at and after such time, shall be equal to the product of (1) such Stock Price as in effect immediately before such adjustment to such Stock Price and (2) a fraction whose numerator is the Conversion Rate in effect immediately before such adjustment to the Conversion Rate and whose denominator is the Conversion Rate to be in effect, in accordance with this Article 5, immediately after such adjustment to the Conversion Rate;

     (iv) each Make-Whole Conversion Rate Adjustment set forth in the table above shall be adjusted in the same manner in which, at the same time and for the same events for which, the Conversion Rate is to be adjusted pursuant to Section 5.04; and

     (v) in no event will the total number of shares of Common Stock issuable upon conversion of the Notes exceed ###-###-#### per $1,000 principal amount of Notes, subject to adjustment in the same manner as the Conversion Rate pursuant to Section 5.04.

          (b) As soon as practicable after the Company determines the anticipated Effective Date of any proposed Make-Whole Fundamental Change, the Company shall provide each Noteholder, the Trustee and the Conversion Agent written notice of, and shall issue through a public medium that is customary for such announcements and publish on the Company’s website a press release indicating, the anticipated Effective Date of such proposed Make-Whole Fundamental Change and shall use commercially reasonable efforts in time to give such notice thirty Business Days in advance of such anticipated Effective Date. Each such press release notice, announcement and publication shall also state that in connection with such Make-Whole Fundamental Change, the Company shall increase, in accordance herewith, the Conversion Rate applicable to Notes entitled as provided herein to such increase (along with a description of how such increase shall be calculated and the time periods during which Notes must be surrendered in order to be entitled to such increase). No later than five Business Days after the actual Effective Date of each Make-Whole Fundamental Change, the Company shall provide each Noteholder, the Trustee and the Conversion Agent written notice of, and shall issue through a public medium that is customary for such announcements and publish on the Company’s website a press release indicating, such Effective Date and the amount by which the Conversion Rate has been so increased.

          Nothing in this Section 5.03 shall prevent an adjustment to the Conversion Rate pursuant to Section 5.04 in respect of a Make-Whole Fundamental Change.

          Section 5.04. Adjustment of Conversion Rate. The Conversion Rate shall be adjusted from time to time by the Company as follows:

          (a) If the Company issues solely shares of Common Stock as a dividend or distribution on all or substantially all of the shares of Common Stock, or if the Company effects a share split or share combination of the Common Stock, the applicable Conversion Rate will be adjusted based on the following formula:

       where

	CR0  =		the applicable Conversion Rate in effect immediately prior to the open of business on the Ex-Dividend Date for such dividend or distribution, or immediately prior to the open of business on the effective date of such share split or share combination, as the case may be;
	CR  =		the applicable Conversion Rate in effect immediately after the open of business on the Ex-Dividend Date for such dividend or distribution, or immediately after

			the open of business on the effective date of such share split or share combination, as the case may be;
	OS0	=	the number of shares of Common Stock outstanding immediately prior to the open of business on the Ex-Dividend Date for such dividend or distribution, or immediately prior to the open of business on the effective date of such share split or share combination, as the case may be; and
	OS	=	the number of shares of Common Stock outstanding immediately after such dividend or distribution, or immediately after the effective date of such share split or share combination, as the case may be.

Such adjustment shall become effective immediately after the opening of business on the Ex-Dividend Date for such dividend or distribution, or the effective date for such share split or share combination. If any dividend or distribution of the type described in this Section 5.04(a) is declared but not so paid or made, or the outstanding shares of Common Stock are not split or combined, as the case may be, the Conversion Rate shall be immediately readjusted, effective as of the date the Board of Directors determines not to pay such dividend or distribution, or split or combine the outstanding shares of Common Stock, as the case may be, to the Conversion Rate that would then be in effect if such dividend, distribution, share split or share combination had not been declared or announced.

          (b) If the Company distributes to all or substantially all holders of its Common Stock any rights, options or warrants entitling them for a period of not more than sixty days from the record date for such distribution to subscribe for or purchase shares of the Common Stock, at a price per share less than the average of the Last Reported Sale Prices of the Common Stock for the ten consecutive Trading Day period ending on, and including, the Trading Day immediately preceding the declaration date for such distribution, the Conversion Rate shall be increased based on the following formula:

         where

	CR0	=	the applicable Conversion Rate in effect immediately prior to the open of business on the Ex-Dividend Date for such distribution;
	CR	=	the applicable Conversion Rate in effect immediately after the open of business on the Ex-Dividend Date for such distribution;
	OS0	=	the number of shares of the Common Stock that are outstanding immediately prior to the open of business on the Ex-Dividend Date for such distribution;
	X	=	the total number of shares of the Common Stock issuable pursuant to such rights, options or warrants; and
	Y	=	the number of shares of the Common Stock equal to the aggregate price payable to exercise such rights, options or warrants, divided by the average of the Last Reported Sale Prices of Common Stock over the ten consecutive Trading Day period ending on, and including, the Trading Day immediately preceding the Ex-Dividend Date relating to such distribution of such rights, options or warrants.

Such adjustment shall be successively made whenever any such rights, options or warrants are distributed and shall become effective immediately after the opening of business on the Ex-Dividend Date for such distribution. To the extent that shares of the Common Stock are not delivered after the expiration of such rights, options or warrants, the Conversion Rate shall be readjusted to the Conversion Rate that would then be in effect had the adjustments made upon the issuance of such rights, options or warrants been made on the basis of delivery of only the number of shares of Common Stock actually delivered. If such rights, options or warrants are not so issued, the Conversion Rate shall again be adjusted to be the Conversion Rate that would then be in effect if such Ex-Dividend Date for such distribution had not been fixed.

          For purposes of this Section 5.04(b), in determining whether any rights, options or warrants entitle the holders to subscribe for or purchase shares of the Common Stock at less than the average of the Last Reported Sale Prices of the Common Stock for each Trading Day in the applicable ten-consecutive-Trading Day period, there shall be taken into account any consideration received by the Company for such rights, options or warrants and any amount payable on exercise or conversion thereof, the value of such consideration, if other than cash, to be determined by the Board of Directors or a committee thereof. In no event shall the Conversion Rate be decreased pursuant to this Section 5.04(b).

          (c) If the Company shall distribute shares of its Capital Stock, evidences of its indebtedness or other of its assets or property (other than (i) dividends or distributions (including share splits) covered by Section 5.04(a) or Section 5.04(b), (ii) dividends or distributions paid exclusively in cash, and (iii) Spin-Offs, to which the provisions set forth below in this Section 5.04(c)) shall apply to all or substantially all holders of its Common Stock, then, in each such case the Conversion Rate shall be increased based on the following formula:

         where

	CR0	=	the applicable Conversion Rate in effect immediately prior to the open of business on the Ex-Dividend Date for such distribution;
	CR	=	the applicable Conversion Rate in effect immediately after the open of business on the Ex-Dividend Date for such distribution.
	SP0	=	the average of the Last Reported Sale Prices of the Common Stock over the ten consecutive Trading Day period ending on, and including, the Trading Day immediately preceding the Ex-Dividend Date for such distribution; and
	FMV	=	the fair market value (as determined by the Board of Directors or a committee thereof) of the shares of Capital Stock, evidences of indebtedness, assets or property distributed with respect to each outstanding share of the Common Stock as of the open of business on the Ex-Dividend Date for such distribution.

Such adjustment shall become effective immediately prior to the opening of business on the Ex-Dividend Date for such distribution; provided that if “FMV” as set forth above is equal to or greater than “SP₀” as set forth above, in lieu of the foregoing adjustment, adequate provisions shall be made so that each Noteholder shall have the right to receive on conversion in respect of each $1,000 principal amount of the Notes held by such holder, in addition to the number of shares of Common Stock equal to the Conversion Rate, the amount and kind of Distributed Property such holder would have received had such holder

owned a number of shares of Common Stock equal to the Conversion Rate immediately prior to the Record Date for such distribution. If such distribution is not so paid or made, the Conversion Rate shall again be adjusted to be the Conversion Rate that would then be in effect if such dividend or distribution had not been declared. If the Board of Directors or a committee thereof determines “FMV” for purposes of this Section 5.04(c) by reference to the actual or when issued trading market for any Notes, it must in doing so consider the prices in such market over the same period used in computing the Last Reported Sale Prices of the Common Stock over the ten consecutive Trading Day period ending on the Trading Day immediately preceding the Ex-Dividend Date for such distribution.

          With respect to an adjustment pursuant to this Section 5.04(c) where there has been a dividend or other distribution on the Common Stock of shares of Capital Stock of any class or series, or similar equity interest, of or relating to a Subsidiary or other business unit of the Company (a “Spin-Off”), the Conversion Rate will be increased based on the following formula:

          where

	CR0	=	the applicable Conversion Rate in effect immediately prior to the open of business on the Ex-Dividend Date for the Spin-Off;
	CR	=	the applicable Conversion Rate in effect immediately after the open of business on the Ex-Dividend Date for the Spin-Off;
	FMV	=	the average of the Last Reported Sale Prices of the Capital Stock or similar equity interest distributed to holders of the Common Stock applicable to one share of the Common Stock over the first ten consecutive Trading Day period immediately following, and including, the Ex-Dividend Date for the Spin-Off (such period, the “Valuation Period”), and
	MP0	=	the average of the Last Reported Sale Prices of the Common Stock over the Valuation Period.

The adjustment to the Conversion Rate under the preceding paragraph of this Section 5.04(c) shall be made immediately after the opening of business on the day after the last day of the Valuation Period, but shall become effective as of the opening of business on the Ex-Dividend Date for the Spin-Off. If the Ex-Dividend Date for the Spin-Off is less than ten Trading Days prior to, and including, the end of the Cash Settlement Averaging Period in respect of any conversion, references within this Section 5.04(c) to ten Trading Days shall be deemed replaced, for purposes of calculating the affected daily Conversion Rates in respect of that conversion, with such lesser number of Trading Days as have elapsed from, and including, the Ex-Dividend Date for the Spin-Off to, and including, the last Trading Day of such Cash Settlement Averaging Period. For purposes of determining the applicable Conversion Rate, in respect of any conversion during the ten Trading Days commencing on the Ex-Dividend Date of any Spin-Off, references in the portion of this Section 5.04(c) related to Spin-Offs to ten Trading Days shall be deemed replaced with such lesser number of Trading Days as have elapsed from, and including, the Ex-Dividend Date for such Spin-Off to, but excluding, the Conversion Date for such conversion.

          Subject in all respect to Section 5.10, rights, options or warrants distributed by the Company to all holders of its Common Stock entitling the holders thereof to subscribe for or purchase shares of the Company’s Capital Stock, including Common Stock (either initially or under certain

circumstances), which rights, options or warrants, until the occurrence of a specified event or events (“Trigger Event”): (i) are deemed to be transferred with such shares of the Common Stock; (ii) are not exercisable; and (iii) are also issued in respect of future issuances of the Common Stock, shall be deemed not to have been distributed for purposes of this Section 5.04 (and no adjustment to the Conversion Rate under this Section 5.04 will be required) until the occurrence of the earliest Trigger Event, whereupon such rights and warrants shall be deemed to have been distributed and an appropriate adjustment (if any is required) to the Conversion Rate shall be made under this Section 5.04(c). If any such right, option or warrant, including any such existing rights, options or warrants distributed prior to the date of this Supplemental Indenture, are subject to events, upon the occurrence of which such rights, options or warrants become exercisable to purchase different Notes, evidences of indebtedness or other assets, then the date of the occurrence of any and each such event shall be deemed to be the date of distribution and Ex-Dividend Date with respect to new rights, options or warrants with such rights (and a termination or expiration of the existing rights, options or warrants without exercise by any of the holders thereof). In addition, in the event of any distribution (or deemed distribution) of rights, options or warrants, or any Trigger Event or other event (of the type described in the preceding sentence) with respect thereto that was counted for purposes of calculating a distribution amount for which an adjustment to the Conversion Rate under this Section 5.04 was made, (1) in the case of any such rights, options or warrants that shall all have been redeemed or repurchased without exercise by any holders thereof, the Conversion Rate shall be readjusted upon such final redemption or repurchase to give effect to such distribution or Trigger Event, as the case may be, as though it were a cash distribution, equal to the per share redemption or repurchase price received by a holder or holders of Common Stock with respect to such rights, options or warrants (assuming such holder had retained such rights or warrants), made to all holders of Common Stock as of the date of such redemption or repurchase, and (2) in the case of such rights, options or warrants that shall have expired or been terminated without exercise by any holders thereof, the Conversion Rate shall be readjusted as if such rights, options and warrants had not been issued.

          For purposes of this Section 5.04(c), Section 5.04(a), and Section 5.04(b), any dividend or distribution to which this Section 5.04(c) is applicable that also includes shares of Common Stock, or rights, options or warrants to subscribe for or purchase shares of Common Stock to which Section 5.04(b) applies (or both), shall be deemed instead to be (1) a dividend or distribution of the evidences of indebtedness, assets or shares of capital stock other than such shares of Common Stock or rights, options or warrants to which Section 5.04(c) applies (and any Conversion Rate adjustment required by this Section 5.04(c) with respect to such dividend or distribution shall then be made) immediately followed by (2) a dividend or distribution of such shares of Common Stock or such rights, options or warrants (and any further Conversion Rate adjustment required by Section 5.04(a) and Section 5.04(b) with respect to such dividend or distribution shall then be made), except (A) the Ex-Dividend Date of such dividend or distribution shall be substituted as “the Ex-Dividend Date,” “the Ex-Dividend Date relating to such distribution of such rights, options or warrants” and “the Ex-Dividend Date for such distribution” within the meaning of Section 5.04(a) and Section 5.04(b) and (B) any shares of Common Stock included in such dividend or distribution shall not be deemed “outstanding immediately prior to the Ex-Dividend Date for such dividend or distribution, or the effective date of such share split or share combination, as the case may be” within the meaning of Section 5.04(a) or “outstanding immediately prior to the Ex-Dividend Date for such dividend or distribution” within the meaning of Section 5.04(b).

          In no event shall the Conversion Rate be decreased pursuant to this Section 5.04(c).

          (d) If any cash dividend or distribution is made to all or substantially all holders of its outstanding Common Stock, the applicable Conversion Rate shall be increased based on the following formula:

               where

CR0  =		the applicable Conversion Rate in effect immediately prior to the open of business on the Ex-Dividend Date for such dividend or distribution;
CR   =		the applicable Conversion Rate in effect immediately after the open of business on the Ex-Dividend Date for such dividend or distribution;
SP0  =		the average of the Last Reported Sale Prices of the Common Stock over the ten consecutive Trading Day period ending on, and including, the Trading Day immediately preceding the Ex-Dividend Date for such dividend or distribution; and
C     =		the amount in cash per share the Company pays or distributes to holders of its Common Stock.

Such adjustment shall become effective immediately after the opening of business on the Ex-Dividend Date for such dividend or distribution; provided that if “C” as set forth above is equal to or greater than “SP₀” as set forth above, in lieu of the foregoing adjustment, adequate provision shall be made so that each Noteholder shall have the right to receive on the date on which the relevant cash dividend or distribution is distributed to holders of Common Stock, for each $1,000 principal amount of Notes, the amount of cash such holder would have received had such holder owned a number of shares equal to the Conversion Rate on the Record Date for such distribution. If such dividend or distribution is not so paid or made, the Conversion Rate shall again be adjusted to be the Conversion Rate that would then be in effect if such dividend or distribution had not been declared.

          For the avoidance of doubt, for purposes of this Section 5.04(d), in the event of any reclassification of the Common Stock, as a result of which the Notes become convertible into more than one class of Common Stock, if an adjustment to the Conversion Rate is required pursuant to this Section 5.04(d), references in this Section to one share of Common Stock or Last Reported Sale Prices of one share of Common Stock shall be deemed to refer to a unit or to the price of a unit consisting of the number of shares of each class of Common Stock into which the Notes are then convertible equal to the numbers of shares of such class issued in respect of one share of Common Stock in such reclassification. The above provisions of this paragraph shall similarly apply to successive reclassifications.

          In no event shall the Conversion Rate be decreased pursuant to this Section 5.04(d).

          (e) If the Company or any of its Subsidiaries makes a payment in respect of a tender offer or exchange offer for the Common Stock and if the cash and value of any other consideration included in the payment per share of the Common Stock exceeds the average of the Last Reported Sale Prices of the Common Stock over the ten consecutive Trading-Day period commencing on, and including, the Trading Day next succeeding the last date on which tenders or exchanges may be made pursuant to such tender or exchange offer (the “Expiration Date”), the Conversion Rate shall be increased based on the following formula:

            where

CR0  =		the applicable Conversion Rate in effect immediately prior to the open of business on the Trading Day next succeeding the Expiration Date;
CR   =		the applicable Conversion Rate in effect immediately after the open of business on the Trading Day next succeeding the Expiration Date;
AC   =		the aggregate value of all cash and any other consideration (as determined by the Board of Directors) paid or payable for shares of Common Stock purchased in such tender or exchange offer;
OS0  =		the number of shares of Common Stock outstanding immediately prior to the time (the “Expiration Time”) such tender or exchange offer expires (prior to giving effect to such tender offer or exchange offer);
OS   =		the number of shares of Common Stock outstanding immediately after the Expiration Time (after giving effect to such tender offer or exchange offer); and
SP   =		the average of the Last Reported Sale Prices of Common Stock over the ten consecutive Trading Day period commencing on, and including, the Trading Day next succeeding the Expiration Date.

Such adjustment under this Section 5.04(e) shall become effective at the opening of business on the Trading Day next succeeding the Expiration Date. If the Trading Day next succeeding the Expiration Date is less than ten Trading Days prior to, and including, the end of the Cash Settlement Averaging Period in respect of any conversion, references within this Section 5.04(e) to ten Trading Days shall be deemed replaced, for purposes of calculating the affected daily Conversion Rates in respect of that conversion, with such lesser number of Trading Days as have elapsed from, and including, the Trading Day next succeeding the Expiration Date to, and including, the last Trading Day of such Cash Settlement Averaging Period. For purposes of determining the applicable Conversion Rate, in respect of any conversion during the ten Trading Days commencing on the Trading Day next succeeding the Expiration Date, references within this Section 5.04(e) to ten Trading Days shall be deemed replaced with such lesser number of Trading Days as have elapsed from, and including, the Trading Day next succeeding the Expiration Date to, but excluding, the Conversion Date for such conversion. If the Company is obligated to purchase shares pursuant to any such tender or exchange offer, but the Company is permanently prevented by applicable law from effecting any or all or any portion of such purchases or all such purchases are rescinded, the Conversion Rate shall again be adjusted to be the Conversion Rate that would then be in effect if such tender or exchange offer had not been made or had been made only in respect of the purchases that had been effected. In no event shall the Conversion Rate be decreased pursuant to this Section 5.04(e).

          (f) The term “Record Date” means, with respect to any dividend, distribution or other transaction or event in which the holders of Common Stock (or other security) 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).

          (g) In addition to those required by clauses (a), (b), (c), (d) and (e) of this Section 5.04, and to the extent permitted by applicable law and subject to the applicable rules of the New York

Stock Exchange, the Company from time to time may increase the Conversion Rate by any amount for a period of at least twenty Business Days if the Board of Directors determines that such increase would be in the Company’s best interest. In addition, the Company may also (but is not required to) increase the Conversion Rate to avoid or diminish any income tax to holders of Common Stock or rights to purchase Common Stock in connection with any dividend or distribution of shares (or rights to acquire shares) or similar event. Whenever the Conversion Rate is increased pursuant to the preceding sentence, the Company shall mail to the holder of each Note at its last address appearing on the Security Register provided for in Section 2.05 of the Base Indenture a notice of the increase at least fifteen days prior to the date the increased Conversion Rate takes effect, and such notice shall state the increased Conversion Rate and the period during which it will be in effect.

          (h) The Company shall not take any action that would result in adjustment of the Conversion Rate, pursuant to this Article 5, in such a manner as to result in the reduction of the Conversion Price to less than the par value per share of Common Stock.

          (i) The applicable Conversion Rate will not be adjusted:

     (i) upon the issuance of any shares of the Common Stock pursuant to any present or future plan providing for the reinvestment of dividends or interest payable on the Company’s securities and the investment of additional optional amounts in shares of the Common Stock under any plan;

     (ii) upon the issuance of any shares of the Common Stock or options or rights to purchase those shares pursuant to any present or future employee, director or consultant benefit plan or program of, or assumed by, the Company or any of the Company’s Subsidiaries;

     (iii) upon the issuance of any shares of the Common Stock pursuant to any option, warrant, right or exercisable, exchangeable or convertible security not described in clause (ii) of this subsection and outstanding as of the date the Notes were first issued;

     (iv) for a change in the par value of the Common Stock;

     (v) for accrued and unpaid interest, including Additional Interest, if any; or

     (vi) for any transactions described in this Section 5.04 if Noteholders participate (as a result of holding the Notes, and at the same time as holders of Common Stock participate) in such transactions as if such Noteholders held a number shares of Common Stock equal to the Conversion Rate at the time such adjustment would be required, multiplied by the principal amount (expressed in thousands) of Notes held by such Noteholder, without having to convert their Notes.

          (j) All calculations and other determinations under this Article 5 shall be made by the Company and shall be made to the nearest one-ten thousandth (1/10,000) of a share.

          (k) The Company shall not be required to make an adjustment in the Conversion Rate unless the adjustment would require a change of at least 1% in the Conversion Rate. However, the Company shall carry forward any adjustments that are less than 1% of the Conversion Rate and make such carried forward adjustment, regardless of whether the aggregate adjustment is less than 1%, (i) upon any conversion of Notes, and (ii) on each of the twenty-two Scheduled Trading Days immediately preceding the Maturity Date.

          (l) Except as set forth in this Article 5, the Company shall not adjust the Conversion Rate.

          (m) Whenever the Conversion Rate is adjusted as herein provided, the Company shall promptly file with the Trustee and any Conversion Agent other than the Trustee an Officers’ Certificate setting forth the Conversion Rate after such adjustment and setting forth a brief statement of the facts requiring such adjustment. Unless and until a Responsible Officer of the Trustee shall have received such Officers’ Certificate, the Trustee shall not be deemed to have knowledge of any adjustment of the Conversion Rate and may assume without inquiry that the last Conversion Rate of which it has knowledge is still in effect. Promptly after delivery of such certificate, the Company shall prepare a notice of such adjustment of the Conversion Rate setting forth the adjusted Conversion Rate and the date on which each adjustment becomes effective and shall notify the Trustee and either (i) issue a press release containing the relevant information (and make such press release available on the Company’s website) or (ii) provide notice to the Noteholders in any manner permitted in Section 5.09. Failure to deliver such notice shall not affect the legality or validity of any such adjustment.

          (n) If, in respect of any Trading Day within the Cash Settlement Averaging Period for a converted Note:

     (i) shares of Common Stock are deliverable with respect to the Daily Settlement Amount for such Trading Day in accordance with this Article 5;

     (ii) any event that requires an adjustment to the Conversion Rate under any of clauses (a), (b), (c), (d) and (e) of this Section 5.04 has not resulted in an adjustment to the Conversion Rate as of such Trading Day; and

     (iii) the shares of Common Stock the holder of such Note shall receive in respect of such Trading Day are not entitled to participate in the distribution or transaction giving rise to such adjustment event because, pursuant to the terms of Section 5.02(i), such shares were not held by such holder on the record date corresponding to such distribution or transaction,

then the Company will adjust the number of shares of Common Stock deliverable with respect to the Daily Settlement Amount for such Trading Day to reflect the relevant distribution or transaction.

     (o) If:

     (i) the Company elects to satisfy the Conversion Obligation solely in shares of Common Stock;

     (ii) any event that requires an adjustment to the Conversion Rate under any of clauses (a), (b), (c), (d) and (e) of this Section 5.04 has not resulted in an adjustment to the Conversion Rate as of the Conversion Date; and

     (iii) the shares of Common Stock the holder of such Note shall receive on settlement are not entitled to participate in the distribution or transaction giving rise to such adjustment event because, pursuant to the terms of Section 5.02(i), such shares were not held by such holder on the record date corresponding to such distribution or transaction,

then the Company will adjust the number of shares of Common Stock deliverable to reflect the relevant distribution or transaction.

          (p) For purposes of this Section 5.04, the number of shares of Common Stock at any time outstanding shall not include shares held in the treasury of the Company but shall include shares issuable in respect of scrip certificates issued in lieu of fractions of shares of Common Stock. The Company will not pay any dividend or make any distribution on shares of Common Stock held in the treasury of the Company.

          (q) If (i) a Noteholder is deemed to have received a distribution or dividend subject to U.S. federal income tax as a result of an adjustment or the nonoccurrence of an adjustment of the Conversion Rate, as a result of the distribution of cash dividends to holders of Common Stock or otherwise, and (ii) the Company pays withholding taxes or applies backup withholding on behalf of a Noteholder in respect of such deemed distribution or dividend, the Company may, at its option, set off such withholding tax or backup withholding payments against subsequent payments of cash and Common Stock on the Notes (or, in certain circumstances, against payments on Common Stock) of such Noteholder.

          Section 5.05. Shares to Be Fully Paid. The Company shall provide, free from preemptive rights, out of its authorized but unissued shares or shares held in treasury, sufficient shares of Common Stock to provide for conversion of the Notes from time to time as such Notes are presented for conversion after application of Section 5.02(a).

          Section 5.06. Effect of Reclassification, Consolidation, Merger or Sale. Upon the occurrence of (i) 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 split, subdivision or combination covered by Section 5.04(a)), (ii) any consolidation, merger, combination or binding share exchange involving the Company, or (iii) any sale or conveyance of all or substantially all of the property and assets of the Company to any other Person, in each case as a result of which holders of Common Stock shall be entitled to receive cash, securities or other property or assets with respect to or in exchange for such Common Stock (any such event a “Merger Event”), then:

          (a) the Company or the successor or purchasing Person, as the case may be, shall execute with the Trustee a supplemental indenture permitted under Section 4.01(g) as set forth in this Supplemental Indenture. Such supplemental indenture shall provide for adjustments that shall be as nearly equivalent as may be practicable to the adjustments provided for in this Article 5. If, in the case of any Merger Event, the Reference Property includes shares of stock or other securities and assets of a corporation other than the successor or purchasing corporation, as the case may be, in such reclassification, change, consolidation, merger, combination, binding share exchange, sale or conveyance, then such supplemental indenture shall also be executed by such other corporation and shall contain such additional provisions to protect the interests of the holders of the Notes as the Board of Directors (or a duly constituted committee thereof) shall reasonably consider necessary by reason of the foregoing, including to the extent required by the Board of Directors (or such committee) and practicable the provisions providing for the repurchase rights set forth in Article 6 herein.

          In the event the Company shall execute a supplemental indenture pursuant to this Section 5.06, the Company shall promptly file with the Trustee an Officers’ Certificate briefly stating the reasons therefor, the kind or amount of cash, securities or property or asset that will comprise the Reference Property after any such Merger Event, any adjustment to be made with respect thereto and that all conditions precedent have been complied with, and shall promptly provide notice thereof to all Noteholders. The Company shall cause notice of the execution of such supplemental indenture to be provided to each Noteholder, at its address appearing on the Security Register provided for in this Indenture, within twenty days after execution thereof. Failure to deliver such notice shall not affect the legality or validity of such supplemental indenture.

          (b) Notwithstanding the provisions of Section 5.02(a), and subject to the provisions of Section 5.01 and Section 5.03, at and after the effective time of such Merger Event, (i) the right to convert each $1,000 principal amount of Notes into cash, shares of Common Stock or a combination of cash and shares of Common Stock at the Company’s election as set forth in Section 5.02 will be changed to a right to convert each $1,000 principal amount of such Note into cash, the kind and amount of shares of stock, securities or other property or assets (including cash or any combination thereof) that a holder of a number of shares of Common Stock equal to the Conversion Rate immediately prior to such transaction would have owned or been entitled to receive (the “Reference Property”) or a combination of cash and Reference Property at the Company’s election, (ii) the related Conversion Obligation shall be settled as set forth under clause (c) below, and (iii) references herein to “Common Stock” shall be to such Reference Property to the extent the context of such references require.

          (c) With respect to each $1,000 principal amount of Notes surrendered for conversion after the effective date of any such Merger Event, the Company’s Conversion Obligation shall be settled in cash or units of Reference Property, at the Company’s election, in accordance with Section 5.02(a) as follows:

     (i) (A) if the Company elects to satisfy its Conversion Obligation in respect of such conversion by delivering solely Reference Property, the Company shall deliver to the converting Noteholder a number of units of Reference Property (each such unit comprised of the kind and amount of shares of stock, securities or other property or assets (including cash or any combination thereof) that a holder of one share of Common Stock immediately prior to such Merger Event would have owned or been entitled to receive based on the Weighted Average Consideration) equal to (1) the aggregate principal amount of Notes to be converted, divided by $1,000, multiplied by (2) the then-applicable Conversion Rate; (B) if the Company elects to satisfy its Conversion Obligation in respect of such conversion by paying solely cash, the Company shall pay to the converting Noteholder cash in an amount, per $1,000 principal amount of Notes equal to the sum of the Daily Conversion Values for each of the twenty consecutive Trading Days during the related Cash Settlement Averaging Period, such Daily Conversion Values determined as if the reference to “the Daily VWAP of the Common Stock” in definition thereof were instead a reference to “the Daily VWAP of a unit of Reference Property” comprised of the kind and amount of shares of stock, securities or other property or assets (including cash or any combination thereof) that a holder of one share of Common Stock immediately prior to such Merger Event would have owned or been entitled to receive based on the Weighted Average Consideration; and (C) if the Company elects to satisfy its Conversion Obligation through delivery of a combination of cash and Reference Property, the Company shall deliver in respect of each $1,000 principal amount of Notes being converted, a Settlement Amount equal to the sum of the Daily Settlement Amounts for each of the twenty consecutive Trading Days during the Cash Settlement Averaging Period for such Note, such Daily Settlement Amounts determined as if the reference to “the Daily VWAP of the Common Stock” in definition of Daily Conversion Value and Daily Share Amount were instead a reference to “the Daily VWAP of a unit of Reference Property” comprised of the kind and amount of shares of stock, securities or other property or assets (including cash or any combination thereof) that a holder of one share of Common Stock immediately prior to such Merger Event would have owned or been entitled to receive based on the Weighted Average Consideration.

     (ii) The Company will deliver the cash in lieu of fractional units of Reference Property as set forth pursuant to Section 5.02(j) (provided that the amount of such cash shall be determined as if references in such Section to “the Daily VWAP of the Common Stock” were instead a reference to “the Daily VWAP of a unit of Reference Property” composed of the kind and amount of shares of stock, securities or other property or assets (including cash or any

combination thereof) that a holder of one share of Common Stock immediately prior to such Merger Event would have owned or been entitled to receive based on the Weighted Average Consideration).

     (iii) The Daily Settlement Amounts (if applicable) and Daily Conversion Values (if applicable) shall be determined by the Company promptly following the last day of the Cash Settlement Averaging Period.

     (iv) For purposes of this Section 5.06, the “Weighted Average Consideration” means the weighted average of the types and amounts of consideration received by the holders of the Common Stock entitled to receive cash, securities or other property or assets with respect to or in exchange for such Common Stock in any Merger Event (in the event holders of the Common Stock are entitled to elect the type of consideration such holders receive, considering only holders who affirmatively make such an election).

          (d) The above provisions of this Section shall similarly apply to successive Merger Events.

          (e) In the event that the Notes become convertible into Reference Property pursuant to this Section 5.06, the Company shall notify the Trustee and issue a press release containing the relevant information, which will include the Weighted Average Consideration, and make such press release available on the Company’s website.

          Section 5.07. Certain Covenants.

          (a) The Company covenants that all shares of Common Stock issued upon conversion of Notes will be fully paid and non-assessable by the Company and free from all taxes, liens and charges with respect to the issue thereof.

          (b) The Company further covenants that if at any time the Common Stock shall be listed on any national securities exchange or automated quotation system, the Company will list and keep listed, so long as the Common Stock shall be so listed on such exchange or automated quotation system, any Common Stock issuable upon conversion of the Notes.

          Section 5.08. Responsibility of Trustee. The Company hereby appoints the Trustee as the initial Conversion Agent, which appointment the Trustee accepts and agrees to perform in accordance with the terms of this Indenture. The Trustee, in its capacity as initial Conversion Agent, and any other Conversion Agent shall not at any time be under any duty or responsibility to any Noteholder to determine the Conversion Rate (or any adjustment thereto) or whether any facts exist that may require any adjustment (including any increase) of the Conversion Rate, or with respect to the nature or extent or calculation of any such adjustment when made, or with respect to the method employed, or herein or in any supplemental indenture provided to be employed, in making the same. The Trustee and any other Conversion Agent (the “Conversion Agent”) shall not be accountable with respect to the validity or value (or the kind or amount) of any shares of Common Stock, or of any securities, property or cash that may at any time be issued or delivered upon the conversion of any Note; and the Trustee and any other Conversion Agent make no representations with respect thereto. Neither the Trustee nor any Conversion Agent shall be responsible for any failure of the Company to issue, transfer or deliver any shares of Common Stock or stock certificates or other securities or property or cash upon the surrender of any Note for the purpose of conversion or to comply with any of the duties, responsibilities or covenants of the Company contained in this Article. Without limiting the generality of the foregoing, neither the Trustee nor any Conversion Agent shall be under any responsibility to determine the correctness of any provisions

contained in any supplemental indenture entered into pursuant to Section 5.06 relating either to the kind or amount of shares of stock or securities or property (including cash) receivable by Noteholders upon the conversion of their Notes after any event referred to in such Section 5.06 or to any adjustment to be made with respect thereto, but, subject to the provisions of Section 7.02 of the Base Indenture, may accept (without any independent investigation) as conclusive evidence of the correctness of any such provisions, and shall be protected in relying upon, the Officers’ Certificate (which the Company shall be obligated to file with the Trustee prior to the execution of any such supplemental indenture) with respect thereto. The rights, privileges, protections, immunities and benefits given to the Trustee, including without limitation its right to be compensated, reimbursed, and indemnified, are extended to, and shall be enforceable by, the Trustee in each of its capacities hereunder, including its capacity as Conversion Agent.

          Section 5.09. Notice to Noteholders Prior to Certain Actions. In case:

          (a) the Company shall declare a dividend (or any other distribution) on its Common Stock that would require an adjustment in the Conversion Rate pursuant to Section 5.04; or

          (b) the Company shall authorize the granting to all of the holders of its Common Stock of rights, options or warrants to subscribe for or purchase any share of any class or any other rights, options or warrants; or

          (c) of any reclassification of the Common Stock of the Company (other than a subdivision or combination of its outstanding Common Stock, or a change in par value, or from par value to no par value, or from no par value to par value), or of any 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 transfer of all or substantially all of the assets of the Company; or

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

the Company shall cause to be filed with the Trustee and to be provided to each Noteholder at its address appearing on the Security Register provided for in Section 2.05 of the Base Indenture, as promptly as possible, a notice stating (i) the date on which a record is to be taken for the purpose of such dividend, distribution or rights, options or warrants, or, if a record is not to be taken, the date as of which the holders of Common Stock of record to be entitled to such dividend, distribution or rights are to be determined, or (ii) the date on which such reclassification, consolidation, merger, sale, transfer, dissolution, liquidation or winding-up is expected to become effective or occur, and the date as of which it is expected that holders of Common Stock of record shall be entitled to exchange their Common Stock for securities or other property deliverable upon such reclassification, consolidation, merger, sale, transfer, dissolution, liquidation or winding-up. Failure to give such notice, or any defect therein, shall not affect the legality or validity of such dividend, distribution, reclassification, consolidation, merger, sale, transfer, dissolution, liquidation or winding-up.

          Section 5.10. Stockholder Rights Plans. To the extent that the Company has a stockholder rights plan or other “poison pill” in effect upon conversion of the Notes, each share of Common Stock, if any, issued upon such conversion shall be entitled to receive the appropriate number of rights, if any, and the certificates representing the Common Stock issued upon such conversion shall bear such legends, if any, in each case as may be provided by the terms of any such stockholder rights plan or poison pill, as the same may be amended from time to time. If, however, prior to the time of conversion, the rights have separated from the shares of Common Stock in accordance with the provisions of the applicable stockholder rights agreement so that the holders of the Notes would not be entitled to receive any rights in respect of Common Stock, if any, issuable upon conversion of the Notes, the Conversion

Rate will be adjusted at the time of separation as if the Company has distributed to all holders of Common Stock, shares of Capital Stock of the Company, evidence of indebtedness or assets as provided in Section 5.04(c), subject to readjustment in the event of the expiration, termination or redemption of such rights.

          Section 5.11. Exchange in Lieu of Conversion. When a Noteholder surrenders its Notes for conversion, the Company may, at its election, direct the Conversion Agent to surrender, on or prior to the second Business Day following the relevant Conversion Date, such Notes to a financial institution designated by the Company (the “Designated Institution”) for exchange in lieu of conversion. In order to accept any Notes surrendered for conversion for exchange in lieu of conversion, the Designated Institution must agree to timely deliver to the Conversion Agent for delivery to the Noteholder, in exchange for such Notes, the shares of Common stock and/or cash that would otherwise be due upon conversion pursuant to Section 5.02 and in respect of which the Company has notified converting Noteholders. If the Company makes the election provided for in this Section 5.11, the Company shall, by the close of business on the second Business Day following the relevant Conversion Date as part of its Settlement Notice, notify the Noteholder surrendering its Notes for conversion that it has made such election. In addition, the Company shall concurrently notify the Designated Institution of the Settlement Method (and, if applicable, the Specified Dollar Amount) that Company has elected with respect to such conversion and the relevant deadline for delivery of the consideration due upon conversion. Any Notes exchanged by the Designated Institution will remain Outstanding.

          If the Designated Institution agrees to accept any Notes for exchange but does not timely deliver the related consideration due upon conversion to the Conversion Agent, or if the Designated Institution does not accept such Notes for exchange, the Company shall, as promptly as practical thereafter, convert such Notes into cash and/or shares of Common Stock, as applicable in accordance with the provisions of Section 5.02.

          For the avoidance of doubt, in no event will the Company’s designation of a Designated Institution pursuant to this Section 5.11 require the Designated Institution to accept any Notes for exchange. The Company will not pay any consideration to, or otherwise enter into any agreement with, the Designated Institution for or with respect to such designation.

ARTICLE 6
REPURCHASE OF NOTES AT OPTION OF NOTEHOLDERS

          Section 6.01. Repurchase at Option of Noteholders upon a Fundamental Change. (a) If there shall occur a Fundamental Change at any time prior to the Maturity Date, then each Noteholder shall have the right, at such holder’s option, to require the Company to repurchase for cash all of such holder’s Notes, or any portion thereof that is an integral multiple of $1,000 principal amount, on the date (the “Fundamental Change Repurchase Date”) specified by the Company that is not less than twenty Business Days and not more than thirty-five Business Days after the date of the Fundamental Change Company Notice (as defined below) at a repurchase price equal to 100% of the principal amount thereof, together with accrued and unpaid interest (including Additional Interest, if any) thereon to, but excluding, the Fundamental Change Repurchase Date (the “Fundamental Change Repurchase Price”), unless the Fundamental Change Repurchase Date is after an Interest Record Date and on or prior to the related Interest Payment Date, in which case interest (including Additional Interest, if any) accrued to the Interest Payment Date will be paid to holders of the Notes as of the preceding Interest Record Date and the Fundamental Change Repurchase Price payable to the holder surrendering the Note for repurchase pursuant to this Article 6 shall be equal to the principal amount of Notes subject to repurchase and will not include any accrued and unpaid interest (including Additional Interest, if any). Repurchases of Notes under this Section 6.01 shall be made, at the option of the holder thereof, upon:

     (i) delivery to the Paying Agent by a holder of a duly completed notice (the “Fundamental Change Repurchase Notice”) in the form set forth on the reverse of the Note as Exhibit C thereto on or prior to the Scheduled Trading Day immediately preceding the Fundamental Change Repurchase Date; and

     (ii) delivery or book-entry transfer of the Notes to the Paying Agent at any time after delivery of the Fundamental Change Repurchase Notice (together with all necessary endorsements) at the office of the Paying Agent, such delivery being a condition to receipt by the holder of the Fundamental Change Repurchase Price therefor; provided that such Fundamental Change Repurchase Price shall be so paid pursuant to this Section 6.01 only if the Note so delivered to the Paying Agent shall conform in all respects to the description thereof in the related Fundamental Change Repurchase Notice.

     The Fundamental Change Repurchase Notice shall state:

     (A) if certificated, the certificate numbers of Notes to be delivered for repurchase;

     (B) the portion of the principal amount of Notes to be repurchased, which must be $1,000 or an integral multiple thereof; and

     (C) that the Notes are to be repurchased by the Company pursuant to the applicable provisions of the Notes and this Indenture;

provided, however, that if the Notes are not in certificated form, the Fundamental Change Repurchase Notice must comply with appropriate Depositary procedures.

          Any repurchase by the Company contemplated pursuant to the provisions of this Section 6.01 shall be consummated by the payment of the Fundamental Change Repurchase Price pursuant to Section 6.03(a).

          Notwithstanding anything herein to the contrary, any holder delivering to the Paying Agent the Fundamental Change Repurchase Notice contemplated by this Section 6.01 shall have the right to withdraw, in whole or in part, such Fundamental Change Repurchase Notice at any time prior to the close of business on the Scheduled Trading Day immediately preceding the Fundamental Change Repurchase Date in accordance with Section 6.02.

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

          (b) On or before the twentieth calendar day after the occurrence of the effective date of a Fundamental Change, the Company shall provide or cause to be provided to all holders of record of the Notes and the Trustee a notice (the “Fundamental Change Company Notice”) of, and issue a press release (and make such press release available on the Company’s website) in respect of, the occurrence of the effective date of the Fundamental Change and of the repurchase right at the option of the holders arising as a result thereof. The Company shall also deliver a copy of the Fundamental Change Company Notice to the Trustee, the Paying Agent and the Conversion Agent within five Business Days after the effective date of the Fundamental Change. Each Fundamental Change Company Notice shall specify:

     (i) the events causing the Fundamental Change;

     (ii) the effective date of the Fundamental Change, and whether the Fundamental Change is a Make-Whole Fundamental Change, in which case the Effective Date of the Make-Whole Fundamental Change;

     (iii) the last date on which a holder may exercise the repurchase right pursuant to this Article 6;

     (iv) the Fundamental Change Repurchase Price;

     (v) the Fundamental Change Repurchase Date;

     (vi) if applicable, the name and address of the Paying Agent and the Conversion Agent;

     (vii) if applicable, the applicable Conversion Rate, and any adjustments to the applicable Conversion Rate resulting from the Fundamental Change;

     (viii) if applicable, that the Notes with respect to which a Fundamental Change Repurchase Notice has been delivered by a holder may be converted only if the holder withdraws the Fundamental Change Repurchase Notice in accordance with the terms of this Indenture;

     (ix) that the holder must exercise the repurchase right on or prior to the close of business on the Scheduled Trading Day immediately preceding the Fundamental Change Repurchase Date (the “Fundamental Change Expiration Time”);

     (x) that the holder shall have the right to withdraw any Notes surrendered prior to the Fundamental Change Expiration Time; and

     (xi) the procedures that holders must follow to require the Company to repurchase their Notes.

          No failure of the Company to give the foregoing notices and no defect therein shall limit the Noteholders’ repurchase rights or affect the validity of the proceedings for the repurchase of the Notes pursuant to this Section 6.01.

          (c) Notwithstanding the foregoing, no Notes may be repurchased by the Company at the option of the holders upon a Fundamental Change if the principal amount of the Notes has been accelerated, and such acceleration has not been rescinded, on or prior to the Fundamental Change Repurchase Date (except in the case of an acceleration resulting from a Default by the Company in the payment of the Fundamental Change Repurchase Price with respect to such Notes).

          (d) In connection with any purchase offer, the Company will:

     (i) comply with the provisions of Rule 13e-4, Rule 14e-1 and any other applicable tender offer rules under the Exchange Act, if required under the Exchange Act,

     (ii) file a Schedule TO or any successor or similar schedule, if required under the Exchange Act, and

     (iii) otherwise comply with all applicable federal and state securities laws in connection with any offer by the Company to purchase the Notes.

          Notwithstanding anything to the contrary provided in this Indenture, compliance by the Company with Rule 13e-4, Rule 14e-1 and any other tender offer rule under the Exchange Act in accordance with clause (i) above, to the extent inconsistent with any other provision of this Indenture, will not, standing alone, constitute an Event of Default solely as a result of compliance by the Company with such rules.

          Notwithstanding the foregoing the Company shall not be required to repurchase the Notes in accordance with this Section 6.01 if a third party makes an offer in the manner, at the times and otherwise in compliance with the requirements set forth in this Section 6.01 and purchases all Notes validly tendered and not withdrawn under such purchase offer.

          Section 6.02. Withdrawal of Fundamental Change Repurchase Notice.

          (a) A Fundamental Change Repurchase Notice may be withdrawn by means of a written notice of withdrawal delivered to the Corporate Trust Office (as defined in Section 1.01 of the Base Indenture) of the Paying Agent in accordance with this Section 6.02 at any time prior to the close of business on the Scheduled Trading Day immediately preceding the Fundamental Change Repurchase Date, specifying:

     (i) the certificate number, if any, of the Note in respect of which such notice of withdrawal is being submitted, or the appropriate Depositary information if the Note in respect of which such notice of withdrawal is being submitted is represented by a Global Note,

     (ii) the principal amount of the Note with respect to which such notice of withdrawal is being submitted, and

     (iii) the principal amount, if any, of such Note that remains subject to the original Fundamental Change Repurchase Notice, which portion must be in principal amounts of $1,000 or an integral multiple of $1,000;

provided, however, that if the Notes are not in certificated form, Noteholders must comply with appropriate Depositary procedures.

          Section 6.03. Deposit of Fundamental Change Repurchase Price.

          (a) The Company will deposit with the Trustee (or other Paying Agent appointed by the Company, or if the Company is acting as its own Paying Agent, set aside, segregate and hold in trust) on or prior to 11:00 a.m. New York City time, on the Fundamental Change Repurchase Date an amount of cash sufficient to repurchase all of the Notes to be repurchased at the appropriate Fundamental Change Repurchase Price. Subject to receipt of funds and/or Notes by the Trustee (or other Paying Agent appointed by the Company), payment for Notes surrendered for repurchase (and not withdrawn prior to the Fundamental Change Expiration Time) will be made on the later of (i) the Fundamental Change Repurchase Date with respect to such Note (provided the holder has satisfied the conditions in Section 6.01) and (ii) the time of book-entry transfer or the delivery of such Note to the Trustee (or other Paying Agent appointed by the Company) by the holder thereof in the manner required by Section 6.01 by mailing checks for the amount payable to the holders of such Notes entitled thereto as they shall appear in the Security Register, provided, however, that payments to the Depositary shall be made by wire transfer of immediately available funds to the account of the Depositary or its nominee. The Trustee shall, promptly after such payment and upon written demand by the Company, return to the Company any funds in excess of the Fundamental Change Repurchase Price.

          (b) If by 11:00 a.m. New York City time, on the Fundamental Change Repurchase Date, the Trustee (or other Paying Agent appointed by the Company) holds money sufficient to make payment on all the Notes or portions thereof that are to be repurchased as a result of the corresponding Fundamental Change, then (i) such Notes will cease to be Outstanding, (ii) interest, including Additional Interest, if any, will cease to accrue on such Notes, and (iii) all other rights of the holders of such Notes will terminate (other than the right to receive the Fundamental Change Repurchase Price, and previously accrued but unpaid interest, including Additional Interest, if any, upon delivery of the Notes), whether or not book-entry transfer of the Notes has been made or the Notes have been delivered to the Trustee or Paying Agent.

          (c) Upon surrender of a Note that is to be repurchased in part pursuant to Section 6.01, the Company shall execute and the Trustee shall authenticate and deliver to the holder a new Note in an authorized denomination equal in principal amount to the unrepurchased portion of the Note surrendered.

ARTICLE 7
MISCELLANEOUS

          Section 7.01. Ratification of Indenture.

          The Indenture, as supplemented by this Supplemental Indenture, is in all respects ratified and confirmed, and this Supplemental Indenture shall be deemed part of the Indenture in the manner and to the extent herein and therein provided with the following revisions in regard to the Notes only:

          (a) Article 3 (Redemption of Securities and Sinking Fund Provisions) of the Base Indenture shall not apply to the Notes.

          (b) Section 5.03 of the Base Indenture is hereby replaced, in regard to the Notes only, with the following text: The Company covenants and agrees to furnish to the Trustee any documents or reports that it is required to file with the Commission pursuant to Section 13 or 15(d) of the Exchange Act, within 15 days after the same are required to be filed with the Commission (giving effect to any grace period provided by Rule 12b-25 under the Exchange Act). Documents filed with the Commission via its Electronic Data-Gathering, Analysis, and Retrieval system shall be deemed furnished to the Trustee as of the time they are filed via such system.

          (c) Article 6 of the Base Indenture is hereby replaced in regard to the Notes only, with the provisions of Article 3 of this Supplemental Indenture.

          (d) Section 7.06(b) of the Base Indenture shall not apply to the Notes.

          (e) Article 9 of the Base Indenture is hereby replaced in regard to the Notes only, with the provisions of Article 4 of this Supplemental Indenture.

          (f) Section 10.01 of the Base Indenture is hereby replaced, in regard to the Notes, with the following text:

The Company shall not consolidate with or merge with or into, or convey, transfer or lease all or substantially all of its properties and assets to, another Person unless:

     (1) if the Company is not the resulting, surviving or transferee Person, the resulting, surviving or transferee Person is a corporation organized and existing under the laws of the

United States of America, any state thereof or the District of Columbia, and such Person expressly assumes by supplemental indenture all of the Company’s obligations under the Notes and the Indenture; and

     (2) immediately after giving effect to such transaction, no Default has occurred and is continuing under the Indenture.

          (g) Sections 11.01 and 11.02 of the Base Indenture are hereby replaced, in regard to the Notes only, with the following text (provided that capitalized terms in the following text shall have the meaning given them in the Supplemental Indenture, notwithstanding their deemed use in the Base Indenture):

If at any time all Notes theretofore authenticated and delivered (other than (x) Notes which have been destroyed, lost or stolen and which have been replaced or paid as provided in Section 2.07 and (y) Notes for whose payment money has theretofore been deposited in trust with the Trustee or any Paying Agent or segregated and held in trust by the Company and thereafter repaid to the Company as provided in Section 11.05) have been delivered to the Trustee for cancellation; or (B) the Company has deposited with the Trustee or delivered to Holders of the Notes, as applicable, after the Notes have become due and payable, whether at the Maturity Date, any Fundamental Change Repurchase Date, upon conversion or otherwise, cash or cash and shares of Common Stock, if any (solely to satisfy the Company’s Conversion Obligation, if applicable), sufficient to pay all of the Outstanding Notes and all other sums due payable under this Indenture by the Company, then this Indenture shall thereupon cease to be of further effect with respect to the Notes except for the except for the provisions of Sections 2.03, 2.05, 2.07, 4.01, 4.02, 4.03 and 7.10, that shall survive until the date of maturity or redemption date, as the case may be, and Sections 7.06 and 11.05, that shall survive to such date and thereafter, and the Trustee, on demand of the Company and at the cost and expense of the Company shall execute proper instruments acknowledging satisfaction of and discharging this Indenture with respect to the Notes.

          (h) For the avoidance of doubt, Article 14 and Article 15 of the Base Indenture shall not apply to the Notes.

          Section 7.02. Trustee Not Responsible for Recitals.

          The recitals herein contained are made by the Company and not by the Trustee, and the Trustee assumes no responsibility for the correctness thereof. The Trustee makes no representation as to the validity or sufficiency of this Supplemental Indenture. All of the provisions contained in the Indenture in respect of the rights, privileges, immunities, powers, and duties of the Trustee shall be applicable in respect of the Supplemental Indenture as fully and with like force and effect as though fully set forth in full herein.

          Section 7.03. Waiver of Stay, Extension or Usury Laws.

          The Company covenants (to the fullest extent permitted by applicable law) that it will not at any time insist upon, plead, or in any manner whatsoever claim or take the benefit or advantage of, any stay or extension law or any usury law or other law that would prohibit or forgive the Company from paying all or any portion of the principal of or interest (including Additional Interest, if any) on the Notes as contemplated herein, wherever enacted, now or at any time hereafter in force, or which may affect the covenants or the performance of this Indenture. The Company hereby expressly waives (to the fullest extent permitted by applicable law) all benefit or advantage of any such law, and covenants that it will not

hinder, delay or impede the execution of any power herein granted to the Trustee, but will suffer and permit the execution of every such power as though no such law had been enacted.

          Section 7.04. Governing Law.

          This Supplemental Indenture and the Notes shall be governed by and construed in accordance with the laws of the State of New York.

          Section 7.05. Separability.

          In case any provision contained in this Supplemental Indenture or in the Notes shall for any reason be held to be invalid, illegal or unenforceable in any respect, such invalidity, illegality or unenforceability shall not affect any other provisions of this Supplemental Indenture or of the Notes, but this Supplemental Indenture and the Notes shall be construed as if such invalid or illegal or unenforceable provision had never been contained herein or therein.

          Section 7.06. Counterparts.

          This Supplemental Indenture may be executed in any number of counterparts, each of which shall be an original but such counterparts shall together constitute but one and the same instrument.

          Section 7.07. Notices to Noteholders.

          Except as otherwise described herein, notices to Noteholders shall be given to the addresses as they appear in the Security Register. Notices shall be deemed to have been given on the date of mailing or electronic delivery. Any notice required to be given by the Company may be given by the Trustee on the Company’s behalf.

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

EXHIBIT A

[FORM OF FACE OF SECURITY]

[EXCEPT AS OTHERWISE PROVIDED IN SECTION 2.11 OF THE INDENTURE (AS DEFINED HEREIN), THIS SECURITY MAY BE TRANSFERRED, IN WHOLE BUT NOT IN PART, ONLY TO ANOTHER NOMINEE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (“DTC”), OR TO A SUCCESSOR DEPOSITARY OR TO A NOMINEE OF SUCH SUCCESSOR DEPOSITARY. UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF DTC TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.]¹

THE SECURITIES REPRESENTED BY THIS CERTIFICATE (AND THE SECURITIES THAT MAY BE ISSUED UPON CONVERSION THEREOF) ARE SUBJECT TO VOTING RESTRICTIONS WITH RESPECT TO SECURITIES HELD BY PERSONS OR ENTITIES THAT FAIL TO QUALIFY AS “CITIZENS OF THE UNITED STATES” AS SUCH TERM IS DEFINED BY RELEVANT LEGISLATION. SUCH VOTING RESTRICTIONS ARE CONTAINED IN THE AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF US AIRWAYS GROUP, INC., AS THE SAME MAY BE AMENDED OR RESTATED FROM TIME TO TIME. A COMPLETE AND CORRECT COPY OF SUCH AMENDED AND RESTATED CERTIFICATE OF INCORPORATION SHALL BE FURNISHED FREE OF CHARGE TO THE HOLDER OF SUCH SECURITIES UPON WRITTEN REQUEST TO THE SECRETARY OF US AIRWAYS GROUP, INC.

US AIRWAYS GROUP, INC.

7.25% Convertible Senior Note due 2014

No. [                    ]		$[  ]
CUSIP No. [     ]

          US Airways Group, Inc., a corporation duly organized and validly existing under the laws of the State of Delaware (herein called the “Company,” which term includes any successor corporation or other entity under the Indenture referred to on the reverse hereof), for value received hereby promises to pay to [CEDE & CO., or its registered assigns,]² the principal sum of [ ] Dollars, [as revised by the Schedule of Increases and Decreases in Global Note attached hereto,]³ on May 15, 2014, interest thereon as set forth below and Additional Interest in the manner, at the rates and to the Persons set forth in Section 3.07 of the Indenture.

          The Company promises to pay interest on the principal amount of this Note at the rate of 7.25% per annum (subject to increase pursuant to Section 3.07 of the Indenture) from May 13, 2009 until May 15, 2014. The Company will pay interest semi-annually on November 15 and May 15 of each year, commencing on November 15, 2009, to holders of record at the close of business on the preceding November 1 and May 1 (whether or not such day is a Business Day), respectively. Interest on the Note will accrue from the most recent date to which interest has been paid, or, if no interest has been paid on the Note, from May 13, 2009.

          Payment of the principal of and accrued and unpaid interest and Additional Interest, if any, on this Note shall be made at the office or agency of the Company maintained for that purpose in the Borough of Manhattan, The City of New York, in such lawful money of the United States of America as at the time of payment shall be legal tender for the payment of public and private debts; provided, however, that any payment to the Depositary or its nominee shall be paid by wire transfer in immediately available funds in accordance with the wire transfer instruction supplied by the Depositary or its nominee from time to time to the Trustee and Paying Agent (if different from Trustee).

          Reference is made to the further provisions of this Note set forth on the reverse hereof, including, without limitation, provisions giving the holder of this Note the right to convert this Note into cash, shares of Common Stock of the Company or a combination of cash and shares of Common Stock, as applicable, on the terms and subject to the limitations set forth in the Indenture. Such further provisions shall for all purposes have the same effect as though fully set forth at this place.

          This Note shall be deemed to be a contract made under the laws of the State of New York, and for all purposes shall be construed in accordance with and governed by the laws of said State (without regard to the conflicts of laws provisions thereof).

          This Note shall not be valid or become obligatory for any purpose until the certificate of authentication hereon shall have been manually signed by the Trustee or a duly authorized authenticating agent under the Indenture.

[Remainder of page intentionally left blank]

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

Dated:

TRUSTEE’S CERTIFICATE OF AUTHENTICATION

THE BANK OF NEW YORK MELLON TRUST COMPANY,
NATIONAL ASSOCIATION
as Trustee, certifies that this is one of the Notes described
in the within-named Indenture

By:
		Authorized Officer

[FORM OF REVERSE OF SECURITY]

US AIRWAYS GROUP, INC.
7.25% Convertible Senior Note due 2014

          This Note is one of a duly authorized issue of Notes of the Company, designated as its 7.25% Convertible Senior Notes due 2014 (the “Notes”), limited to the aggregate principal amount of $172,500,000 all issued or to be issued under and pursuant to a First Supplemental Indenture, dated as of May 13, 2009, between the Company and The Bank of New York Mellon Trust Company, National Association, as trustee (the “Trustee”), to the Indenture, dated as of March 13, 2009, between the Company and the Trustee (as such may be amended from time to time, the “Indenture”) to which Indenture and all indentures supplemental thereto reference is hereby made for a description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Trustee, the Company and the holders of the Notes. Additional Notes may be issued in an unlimited aggregate principal amount, subject to certain conditions specified in the Indenture.

          In case an Event of Default, as defined in the Indenture, shall have occurred and be continuing, the principal of and interest, including Additional Interest, if any, on all Notes may be declared, by either the Trustee or the holders of not less than 25% in aggregate principal amount of Notes then Outstanding, and upon said declaration shall become, due and payable, in the manner, with the effect and subject to the conditions and certain exceptions set forth in the Indenture.

          Subject to the terms and conditions of the Indenture, the Company will make all payments and deliveries in respect of the Fundamental Change Repurchase Price and the principal amount on the Maturity Date, as the case may be, to each holder who surrenders a Note to a Paying Agent to collect such payments in respect of the Note. The Company will pay cash amounts in money of the United States that at the time of payment is legal tender for payment of public and private debts.

          The Indenture contains provisions permitting the Company and the Trustee in certain circumstances, without the consent of the holders of the Notes, and in other circumstances, with the consent of the holders of not less than a majority in aggregate principal amount of the Notes at the time Outstanding, evidenced as in the Indenture provided, to execute supplemental indentures modifying the terms of the Indenture and the Notes as described therein. It is also provided in the Indenture that, subject to certain exceptions, the holders of a majority in aggregate principal amount of the Notes at the time Outstanding may on behalf of the holders of all of the Notes waive any past Default or Event of Default under the Indenture and its consequences.

          No reference herein to the Indenture and no provision of this Note or of the Indenture shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of and accrued and unpaid interest, and Additional Interest, if any, on this Note at the place, at the respective times, at the rate and in the lawful money herein prescribed.

          The Notes are issuable in registered form without coupons in denominations of $1,000 principal amount and integral multiples thereof. At the office or agency of the Company referred to on the face hereof, and in the manner and subject to the limitations provided in the Indenture, Notes may be exchanged for a like aggregate principal amount of Notes of other authorized denominations, without payment of any service charge but, if required by the Company or Trustee, with payment of a sum sufficient to cover any tax, assessments or other governmental charges that may be imposed in connection therewith as a result of the name of the holder of the new Notes issued upon such exchange of Notes being different from the name of the holder of the old Notes surrendered for such exchange.

          The Notes are not subject to redemption through the operation of any sinking fund or otherwise.

          Upon the occurrence of a Fundamental Change, the holder has the right, at such holder’s option, to require the Company to repurchase for cash all of such holder’s Notes or any portion thereof (in principal amounts of $1,000 or integral multiples thereof) on the Fundamental Change Repurchase Date at a price equal to the Fundamental Change Repurchase Price.

          Subject to the provisions of the Indenture, the holder hereof has the right, at its option, prior to the close of business on the second Scheduled Trading Day immediately preceding the Maturity Date, to convert any Notes or portion thereof that is $1,000 or an integral multiple thereof, into cash, shares of Common Stock or a combination of cash and shares of Common Stock, as applicable, at a Conversion Rate specified in the Indenture, as adjusted from time to time as provided in the Indenture.

          Terms used in this Note and defined in the Indenture are used herein as therein defined.

ABBREVIATIONS

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

TEN COM -as tenants in common		UNIF GIFT MIN ACT
				Custodian
		(Cust)
TEN ENT -as tenants by the entireties
		(Minor)
JT TEN -as joint tenants with right of survivorship and not as tenants in common		Uniform Gifts to Minors Act		(State)

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

SCHEDULE OF INCREASES AND DECREASES IN GLOBAL SECURITY⁴

US AIRWAYS GROUP, INC.
7.25% Convertible Senior Notes due 2014

          The initial principal amount of this Global Note is $[          ]. The following increases or decreases in this Global Note have been made:

Signature

Amount of decrease in

Amount of increase in

Principal Amount of this

of authorized signatory of

Principal Amount of this

Principal Amount of this

Global Note following

Trustee or

Date

Global Note

Global Note

such decrease or increase

Custodian

EXHIBIT B

[FORM OF NOTICE OF CONVERSION]

To: US AIRWAYS GROUP, INC.

     The undersigned registered owner of this Note hereby exercises the option to convert this Note, or the portion hereof (that is $1,000 principal amount or an integral multiple thereof) below designated, into cash, shares of Common Stock or a combination of cash and shares of Common Stock, as applicable, in accordance with the terms of the Indenture referred to in this Note, and directs that any shares of Common Stock issuable and deliverable upon such conversion, together with any cash comprising the Daily Conversion Values or a portion of the Daily Settlement Amounts for each of the twenty Trading Days during the Cash Settlement Averaging Period and for any fractional shares, and any Notes representing any unconverted principal amount hereof, be issued and delivered to the registered holder hereof unless a different name has been indicated below. If any shares of Common Stock or any portion of this Note not converted are to be issued in the name of a Person other than the undersigned, the undersigned will pay all transfer taxes, assessments or other governmental charges payable with respect thereto. Any amount required to be paid to the undersigned on account of interest accompanies this Note.

Dated:
						Signature(s)
Signature Guarantee
Signature(s) must be guaranteed by an eligible Guarantor Institution (banks, stock brokers, savings and loan associations and credit unions) with membership in an approved signature guarantee medallion program pursuant to Securities and Exchange Commission Rule 17Ad-15 if shares of Common Stock are to be issued, or Notes to be delivered, other than to and in the name of the registered holder.

Fill in for registration of shares if to be issued, and Notes if to be delivered, other than to and in the name of the registered holder:
(Name)
(Street Address)
(City, State and Zip Code)
Please print name and address
		Principal amount to be converted (if less than all):
		$                    ,000
		NOTICE: The above signature(s) of the holder(s) hereof must correspond with the name as written upon the face of the Note in every particular without alteration or enlargement or any change whatever.
		Social Security or Other Taxpayer Identification Number

EXHIBIT C

[FORM OF FUNDAMENTAL CHANGE REPURCHASE NOTICE]

To: US AIRWAYS GROUP, INC.

The undersigned registered owner of this Note hereby acknowledges receipt of a notice from US Airways Group, Inc. (the “Company”) as to the occurrence of a Fundamental Change with respect to the Company and specifying the Fundamental Change Repurchase Date and requests and instructs the Company to repay to the registered holder hereof in accordance with the applicable provisions of the Indenture referred to in this Note (1) the entire principal amount of this Note, or the portion thereof (that is $1,000 principal amount or an integral multiple thereof) below designated, and (2) if such Fundamental Change Repurchase Date does not fall during the period after an Interest Record Date and on or prior to the corresponding Interest Payment Date, accrued and unpaid interest, including Additional Interest, if any, thereon to, but excluding, such Fundamental Change Repurchase Date.

In the case of certificated Notes, the certificate numbers of the Notes to be repurchased are as set forth below:

Dated:
						Signature(s)
						Social Security or Other Taxpayer Identification Number
						Principal amount to be repaid (if less than all):
						$                    ,000
						Certificate Numbers (if applicable)
						NOTICE: The above signature(s) of the holder(s) hereof must correspond with the name as written upon the face of the Note in every particular without alteration or enlargement or any change whatever.

EXHIBIT D

[FORM OF ASSIGNMENT AND TRANSFER]

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

Dated:
Signature(s)
Signature Guarantee
Signature(s) must be guaranteed by an eligible Guarantor Institution (banks, stock brokers, savings and loan associations and credit unions) with membership in an approved signature guarantee medallion program pursuant to Securities and Exchange Commission Rule 17Ad-15 Notes are to be delivered, other than to and in the name of the registered holder.

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