Document:

<PAGE>

EXHIBIT 4.89

                              BRIDGE LOAN AGREEMENT

                 THIS BRIDGE LOAN AGREEMENT, dated as of October 31, 2006, is
entered into by and between BRILLIANT TECHNOLOGIES CORPORATION, a Delaware
corporation with headquarters located at 211 Madison Avenue, New York, New York
(the "Company"), and the entity named on an executed counterpart of the
signature page hereto (the "Buyer").

                                  WITNESSETH:

                 WHEREAS, the Company and the Buyer are executing and delivering
this Agreement in accordance with and in reliance upon the exemption from
securities registration for offers and sales to accredited investors afforded,
INTER ALIA, by Rule 506 under Regulation D ("Regulation D") as promulgated by
the United States Securities and Exchange Commission (the "SEC") under the
Securities Act of 1933, as amended (the "1933 Act"), and/or Section 4(2) of the
1933 Act; and

                 WHEREAS, the Buyer wishes to lend funds in the amount of the
Purchase Price (as defined below) to the Company, subject to and upon the terms
and conditions of this Agreement and acceptance of this Agreement by the
Company, the repayment of which will be represented by a Promissory Note of the
Company (the "Note"), on the terms and conditions referred to herein; and

                 WHEREAS, in connection with the loan to be made by the Buyer,
the Company has agreed to issue the Note and the Warrant (as defined below) to
the Buyer;

                 NOW THEREFORE, in consideration of the premises and the mutual
covenants contained herein and other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, the parties agree as
follows:

        AGREEMENT TO PURCHASE; PURCHASE PRICE.

                 a. PURCHASE.

                 (i) Subject to the terms and conditions of this Agreement and
the other Transaction Agreements (as defined below), the Buyer hereby agrees to
loan to the Company the principal amount specified on the Buyer's signature page
of this Agreement (the "Purchase Price").

                 (ii) The obligation to repay the loan of the relevant Purchase
Price from the Buyer shall be evidenced by the Company's issuance of one or more
Notes to the Buyer in the principal amount of One Hundred Three (103%) of the
Purchase Price paid by the Buyer. Each Note shall be payable on the date which
is the earlier of (i) December 15, 2006, or (ii) the date

<PAGE>

                 c. AUTHORIZED SHARES.

                 (i) The authorized capital stock of the Company consists of (x)
800,000,000 shares of Common Stock, $0.0001 par value per share, of which
approximately 530,000 are outstanding as of OCT 31, 2006 and (y) 1,000,000
shares of Preferred Stock, $0.001 par value, of which OCT 31, 2005 are
outstanding as of the date hereof.

                 (ii) There are no outstanding securities which are convertible
into shares of Common Stock, whether such conversion is currently exercisable or
exercisable only upon some future date or the occurrence of some event in the
future.

                 (iii) All issued and outstanding shares of Common Stock have
been duly authorized and validly issued and are fully paid and non-assessable.
On the Certificate of Incorporation Amendment Filing Date the Company will have
sufficient authorized and unissued shares of Common Stock as would be necessary
to effect the issuance of the Shares upon the exercise of the Warrant.

                 (iv) On the Certificate of Incorporation Amendment Filing Date
the Shares will be duly authorized by all necessary corporate action on the part
of the Company, and, when issued upon exercise of the Warrant, in accordance
with its terms, will have been duly and validly issued, fully paid and
non-assessable and will not subject the Holder thereof to personal liability by
reason of being such Holder.

                 d. TRANSACTION AGREEMENTS AND STOCK. This Agreement and each of
the other Transaction Agreements, and the transactions contemplated thereby,
have been duly and validly authorized by the Company, this Agreement has been
duly executed and delivered by the Company and this Agreement is, and the Note,
the Warrant and each of the other Transaction Agreements, when executed and
delivered by the Company, will be, valid and binding agreements of the Company
enforceable in accordance with their respective terms, subject as to
enforceability to general principles of equity and to bankruptcy, insolvency,
moratorium, and other similar laws affecting the enforcement of creditors'
rights generally.

                 e. NON-CONTRAVENTION. The execution and delivery of this
Agreement and each of the other Transaction Agreements by the Company, the
issuance of the Securities, and the consummation by the Company of the other
transactions contemplated by this Agreement, the Note, the Warrant and the other
Transaction Agreements do not and will not conflict with or result in a breach
by the Company of any of the terms or provisions of, or constitute a default
under (i) the certificate of incorporation or by-laws of the Company, each as
currently in effect, (ii) any indenture, mortgage, deed of trust, or other
material agreement or instrument to which the Company is a party or by which it
or any of its properties or assets are bound, including any listing agreement
for the Common Stock except as herein set forth, or (iii) to its knowledge, any
existing applicable law, rule, or regulation or any applicable decree, judgment,
or order of any court, United States federal or state regulatory body,
administrative agency, or other governmental body having jurisdiction over the
Company or any of its properties or assets,

                                       2
<PAGE>

               (ii) engaging in any type of business practice; or

               (iii) engaging in any activity in connection with the purchase or
               sale of any security or commodity or in connection with any
               violation of federal or state securities laws or federal
               commodities laws;

                 (4) Such Company Control Person was the subject of any order,
judgment or decree, not subsequently reversed, suspended or vacated, of any
federal or state authority barring, suspending or otherwise limiting for more
than 60 days the right of such Company Control Person to engage in any activity
described in paragraph (3) of this item, or to be associated with Persons
engaged in any such activity; or

                 (5) Such Company Control Person was found by a court of
competent jurisdiction in a civil action or by the CFTC or SEC to have violated
any federal or state securities law, and the judgment in such civil action or
finding by the CFTC or SEC has not been subsequently reversed, suspended, or
vacated.

                 m. NO UNDISCLOSED LIABILITIES OR EVENTS. To the best of the
Company's knowledge, the Company has no liabilities or obligations other than
those disclosed in the Transaction Agreements or those incurred in the ordinary
course of the Company's business since the Last Audited Date, or which
individually or in the aggregate, do not or would not have a Material Adverse
Effect. No event or circumstances has occurred or exists with respect to the
Company or its properties, business, operations, condition (financial or
otherwise), or results of operations, which, under applicable law, rule or
regulation, requires public disclosure or announcement prior to the date hereof
by the Company but which has not been so publicly announced or disclosed. Except
for the Certificate of Incorporation Amendment, there are no proposals currently
under consideration or currently anticipated TO BE UNDER CONSIDERATION by the
Board of Directors or the executive officers of the Company which proposal would
(x) change the articles or certificate of incorporation or other charter
document or by-laws of the Company, each as currently IN effect, with, or
without shareholder approval, which change would reduce or otherwise adversely
affect the rights and powers of the shareholders of the Common Stock or (y)
materially or substantially change the business, assets or capital of the
Company, including its interests in subsidiaries.

                 n. NO INTEGRATED OFFERING. Neither the Company nor any OF ITS
AFFILIATES nor any Person acting on its or their behalf has, directly or
indirectly, at any time since ___________ made any offer or sales of any
security or solicited any offers to buy any security under circumstances that
would eliminate the availability of the exemption from registration under
Regulation D in connection with the offer and sale of the Securities as
contemplated hereby.

                 o. DILUTION. The number of shares issuable upon exercise of the
Warrant may have a dilutive effect on the ownership interests of the other
shareholders (and Persons having the right to become shareholders) of the
Company. The Company's executive officers and directors have studied and fully
understand the nature of the Securities being sold hereby and recognize that
they have such a potential dilutive effect. The board of directors of the
Company

                                       3
<PAGE>

         IN WITNESS WHEREOF, with respect to the Purchase Price specified below,
this Agreement has been duly executed by the Buyer and the Company as of the
date set first above written.

  PURCHASE PRICE:                               $ 250,000.00

                                       BUYER:
                                       ------

                                       Cambridge Mercantile Corp.
                                       25 Adelaide Street E.
                                       Toronto, Ontario M5C 3A1

                                            By:_________________________________
Telecopier No.________________________         (Signature of Authorized Person)

                                            ____________________________________
______________________________________      Printed Name and Title
Jurisdiction of Incorporation
or Organization

                                     COMPANY
                                     -------

BRILLIANT TECHNOLOGIES CORPORATION

By: /s/ Allan Klepfisz
    ----------------------------
(Signature of Authorized Person)

Allan Klepfisz, President
--------------------------------
  Printed Name and Title

                                       4exv4w1

 

Exhibit 4.1

DELTA PETROLEUM CORPORATION,

THE SUBSIDIARY GUARANTORS PARTIES HERETO

AND

U.S. BANK NATIONAL ASSOCIATION,

AS TRUSTEE

3 3/4% Convertible Senior Notes due 2037

INDENTURE

Dated as of April 25, 2007

 

TABLE OF CONTENTS

 

	 	 	 	 	 
	 	 	Page	 
	ARTICLE 1
	 	 	 	 
	Definitions and Incorporation by Reference
	 	 	 	 
	 
	 	 	 	 
	Section 1.01
.. Definitions
	 	 	1	 
	Section 1.02 . Incorporation by Reference of TIA
	 	 	9	 
	Section 1.03 . Rules of Construction
	 	 	10	 
	 
	 	 	 	 
	ARTICLE 2
	 	 	 	 
	The Securities
	 	 	 	 
	 
	 	 	 	 
	Section 2.01 . Title; Amount and Issue of Securities; Principal and Interest
	 	 	10	 
	Section 2.02 . Form of Securities
	 	 	12	 
	Section 2.03 . Global Security Legend
	 	 	12	 
	Section 2.04 . Execution and Authentication
	 	 	13	 
	Section 2.05 . Registrar and Paying Agent
	 	 	13	 
	Section 2.06 . Paying Agent to Hold Money in Trust
	 	 	14	 
	Section 2.07 . Holder Lists
	 	 	14	 
	Section 2.08 . General Provisions Relating to Transfer and Exchange
	 	 	15	 
	Section 2.09 . Book-Entry Provisions for the Global Securities
	 	 	16	 
	Section 2.10 . Mutilated, Destroyed, Lost or Stolen Securities
	 	 	17	 
	Section 2.11 . Outstanding Securities
	 	 	18	 
	Section 2.12 . Temporary Securities
	 	 	19	 
	Section 2.13 . Cancellation
	 	 	19	 
	Section 2.14 . Payment of Interest; Defaulted Interest
	 	 	19	 
	Section 2.15 . Computation of Interest
	 	 	21	 
	Section 2.16 . CUSIP and ISIN Numbers
	 	 	21	 
	 
	 	 	 	 
	ARTICLE 3
	 	 	 	 
	Covenants
	 	 	 	 
	 
	 	 	 	 
	Section 3.01 . Payment of Securities
	 	 	21	 
	Section 3.02 . Financial and Other Reports
	 	 	21	 
	Section 3.03 . Future Subsidiary Guarantors
	 	 	22	 
	Section 3.04 . Maintenance of Office or Agency
	 	 	22	 
	Section 3.05 . Corporate Existence
	 	 	23	 
	Section 3.06 . Payment of Taxes and Other Claims
	 	 	23	 
	Section 3.07 . Compliance Certificate
	 	 	23	 
	Section 3.08 . Further Instruments and Acts
	 	 	23	 
	Section 3.09 . Statement by Officers as to Default
	 	 	23	 
	Section 3.10 . Stay, Extension and Usury Laws
	 	 	24	 

ii

 

	 	 	 	 	 
	 	 	Page	 
	ARTICLE 4 
	 	 	 	 
	Successor Company 
	 	 	 	 
	 
	 	 	 	 
	Section 4.01 . Consolidation, Merger and Sale of Assets of the Company
	 	 	24	 
	Section 4.02 . Consolidation, Merger and Sale of Assets of the Subsidiary Guarantors
	 	 	25	 
	 
	 	 	 	 
	ARTICLE 5 
	 	 	 	 
	Redemption of Securities 
	 	 	 	 
	 
	 	 	 	 
	Section 5.01 . Optional Redemption
	 	 	25	 
	Section 5.02 . Election to Redeem; Notice to Trustee
	 	 	25	 
	Section 5.03 . Selection by Trustee of Securities to Be Redeemed
	 	 	26	 
	Section 5.04 . Notice of Redemption
	 	 	26	 
	Section 5.05 . Deposit of Redemption Price
	 	 	27	 
	Section 5.06 . Securities Payable on Redemption Date
	 	 	28	 
	Section 5.07 . Securities Redeemed in Part
	 	 	28	 
	 
	 	 	 	 
	ARTICLE 6
	 	 	 	 
	Defaults and Remedies 
	 	 	 	 
	 
	 	 	 	 
	Section 6.01 . Events of Default
	 	 	28	 
	Section 6.02 . Acceleration
	 	 	30	 
	Section 6.03 . Other Remedies
	 	 	31	 
	Section 6.04 . Waiver of Past Defaults
	 	 	31	 
	Section 6.05 . Control by Majority
	 	 	31	 
	Section 6.06 . Limitation on Suits
	 	 	32	 
	Section 6.07 . Rights of Holders to Receive Payment
	 	 	32	 
	Section 6.08 . Collection Suit by Trustee
	 	 	32	 
	Section 6.09 . Trustee May File Proofs of Claim
	 	 	32	 
	Section 6.10 . Priorities
	 	 	33	 
	Section 6.11 . Restoration of Rights and Remedies
	 	 	33	 
	Section 6.12 . Undertaking of Costs
	 	 	33	 
	 
	 	 	 	 
	ARTICLE 7
	 	 	 	 
	Trustee 
	 	 	 	 
	 
	 	 	 	 
	Section 7.01 . Duties of Trustee
	 	 	34	 
	Section 7.02 . Rights of Trustee
	 	 	35	 
	Section 7.03 . Individual Rights of Trustee
	 	 	36	 
	Section 7.04 . Trustee’s Disclaimer
	 	 	36	 
	Section 7.05 . Notice of Defaults
	 	 	36	 
	Section 7.06 . Reports by Trustee to Holders
	 	 	37	 
	Section 7.07 . Compensation and Indemnity
	 	 	37	 
	Section 7.08 . Replacement of Trustee
	 	 	38	 
	Section 7.09 . Successor Trustee by Merger
	 	 	38	 

iii

 

	 	 	 	 	 
	 	 	Page	 
	Section 7.10 . Eligibility; Disqualification
	 	 	39	 
	Section 7.11 . Preferential Collection of Claims Against Company
	 	 	39	 
	 
	 	 	 	 
	ARTICLE 8
	 	 	 	 
	Discharge of Indenture 
	 	 	 	 
	 
	 	 	 	 
	Section 8.01 . Discharge of Liability on Securities
	 	 	39	 
	Section 8.02 . Reinstatement
	 	 	40	 
	Section 8.03 . Officers’ Certificate; Opinion of Counsel
	 	 	40	 
	 
	 	 	 	 
	ARTICLE 9
	 	 	 	 
	Amendments 
	 	 	 	 
	 
	 	 	 	 
	Section 9.01 . Without Consent of Holders
	 	 	41	 
	Section 9.02 . With Consent of Holders
	 	 	41	 
	Section 9.03 . Compliance with TIA
	 	 	42	 
	Section 9.04 . Revocation and Effect of Consents and Waivers
	 	 	43	 
	Section 9.05 . Notation on or Exchange of Securities
	 	 	43	 
	Section 9.06 . Trustee to Sign Amendments
	 	 	43	 
	 
	 	 	 	 
	ARTICLE 10 
	 	 	 	 
	Subsidiary Guarantees
	 	 	 	 
	 
	 	 	 	 
	Section 10.01 . Subsidiary Guarantees
	 	 	43	 
	Section 10.02 . Limitation on Liability; Release and Discharge; Termination on Conversion
	 	 	46	 
	Section 10.03 . Right of Contribution
	 	 	47	 
	 
	 	 	 	 
	ARTICLE 11
	 	 	 	 
	Purchase at the Option of Holder Upon a Fundamental
	 	 	 	 
	Change; Purchase at the Option of Holder 
	 	 	 	 
	 
	 	 	 	 
	Section 11.01 . Purchase at the Option of the Holder Upon a Fundamental Change
	 	 	47	 
	Section 11.02 . Purchase at the Option of the Holder
	 	 	49	 
	Section 11.03 . Further Conditions and Procedures for Purchase at the Option of the Holder Upon
a Fundamental Change and Purchase at the Option of the Holder
	 	 	51	 
	 
	 	 	 	 
	ARTICLE 12
	 	 	 	 
	Conversion
	 	 	 	 
	 
	 	 	 	 
	Section 12.01 . Conversion of Securities
	 	 	54	 
	Section 12.02 . Adjustments to Conversion Rate
	 	 	57	 
	Section 12.03 . Adjustment Upon Certain Fundamental Changes
	 	 	64	 
	Section 12.04 . Effect of Reclassification, Consolidation, Merger or Sale
	 	 	65	 
	Section 12.05 . Responsibility of Trustee
	 	 	66	 
	Section 12.06 . Notice to Holders Prior to Certain Actions
	 	 	67	 

iv

 

	 	 	 	 	 
	 	 	Page	 
	Section 12.07 . Stockholder Rights Plan
	 	 	68	 
	 
	 	 	 	 
	ARTICLE 13 
	 	 	 	 
	Miscellaneous
	 	 	 	 
	 
	 	 	 	 
	Section 13.01 . TIA Controls
	 	 	68	 
	Section 13.02 . Notices
	 	 	68	 
	Section 13.03 . Communication by Holders with other Holders
	 	 	69	 
	Section 13.04 . Certificate and Opinion as to Conditions Precedent
	 	 	69	 
	Section 13.05 . Statements Required in Certificate or Opinion
	 	 	69	 
	Section 13.06 . When Securities Are Disregarded
	 	 	70	 
	Section 13.07 . Rules by Trustee, Paying Agent and Registrar
	 	 	70	 
	Section 13.08 . Legal Holidays
	 	 	70	 
	Section 13.09 . Governing Law; Waiver of Jury Trial
	 	 	70	 
	Section 13.10 . No Recourse Against Others
	 	 	70	 
	Section 13.11 . Successors
	 	 	71	 
	Section 13.12 . Multiple Originals
	 	 	71	 
	Section 13.13 . Table of Contents; Headings
	 	 	71	 
	Section 13.14 . Severability Clause
	 	 	71	 
	Section 13.15 . Calculations
	 	 	71	 
	Section 13.16 . No Adverse Interpretation of Other Agreements
	 	 	71	 

	 	 	 
	SCHEDULE A

	 	Additional Shares
	EXHIBIT A

	 	Form of the Security
	EXHIBIT B

	 	Form of Supplemental Indenture

v

 

CROSS-REFERENCE TABLE

	 	 	 
	TIA	 	Indenture
	Section	 	Section
	310(a)(1)
	 	7.10
	(a)(2)
	 	7.10
	(a)(3)
	 	N.A.
	(a)(4)
	 	N.A.
	(a)(5)
	 	7.10
	(b)
	 	7.08; 7.10
	(c)
	 	N.A.
	311(a)
	 	7.11
	(b)
	 	7.11
	(c)
	 	N.A.
	312(a)
	 	2.07
	(b)
	 	13.03
	(c)
	 	13.03
	313(a)
	 	7.06
	(b)
	 	7.06
	(c)
	 	7.06
	(d)
	 	N.A.
	314(a)
	 	3.02(d); 3.07
	(b)
	 	N.A.
	(c)
	 	13.04
	(d)
	 	N.A.
	(e)
	 	13.05
	(f)
	 	N.A.
	315(a)
	 	7.01
	(b)
	 	7.05
	(c)
	 	7.01
	(d)
	 	7.01
	(e)
	 	6.12
	316(a)
	 	6.04, 6.05,13.06
	(b)
	 	6.07
	(c)
	 	6.05
	317(a)
	 	6.08, 6.09
	(b)
	 	2.06
	318(a)
	 	13.01
	(b)
	 	N.A.
	(c)
	 	13.01

     N.A. means Not Applicable.

Note: This Cross-Reference Table shall not, for any purpose, be deemed to be part of this
Indenture.

vi

 

     INDENTURE dated as of April 25, 2007, among DELTA PETROLEUM CORPORATION, a Delaware
corporation (the “Company”), the Subsidiary Guarantors (as defined below) and U.S. BANK NATIONAL
ASSOCIATION, as Trustee (the “Trustee”).

     Each party agrees as follows for the benefit of the other parties and for the equal and
ratable benefit of the Holders of the Company’s 3 3/4% Convertible Senior Notes due 2037 (the
“Securities”) and the Guarantees thereof by certain of the Company’s subsidiaries.

ARTICLE 1

Definitions and Incorporation by Reference

     Section 1.01 . Definitions.

     “Additional Securities” has the meaning specified in Section 2.01.

     “Additional Shares” has the meaning specified in Section 12.03(a).

     “Adjustment Event” has the meaning specified in Section 12.02(l).

     “Affiliate” of any specified Person means any other Person directly or indirectly controlling,
controlled by or under direct or indirect common control with such specified Person. For the
purposes of this definition, “control” when used with respect to any specified Person means the
power to direct the management and policies of such Person, directly or indirectly, whether through
the ownership of voting securities, by contract or otherwise, and the terms “controlling” and
“controlled” have meanings correlative to the foregoing.

     “Agent Members” has the meaning specified in Section 2.09(a).

     “Authenticating Agent” has the meaning specified in Section 2.04.

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

     “Beneficial Owner” shall mean any person who is considered a beneficial owner of a security in
accordance with Rule 13d-3 promulgated by the Commission under the Exchange Act.

     “Board of Directors” means, as to any Person, the board of directors of such Person or any
duly authorized committee thereof.

     “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” of any Person means any and all shares, interests, rights to purchase,
warrants, options, participations or other equivalents of or interests in (however designated)

 

 

equity of such Person, including any Preferred Stock, but excluding any debt securities
convertible into such equity.

     “Certificate of Destruction” has the meaning specified in Section 2.13.

     “Code” means the Internal Revenue Code of 1986, as amended.

     “Commission” has the meaning specified in Section 1.02.

     “Common Equity” of any Person means Capital Stock of such Person that is generally entitled to
(1) vote in the election of directors of such Person or (2) if such Person is not a corporation,
vote or otherwise participate in the selection of the governing body, partners, managers or others
that will control the management or policies of such Person.

     “Common Stock” means the Company’s Common Stock, par value $0.01 per share.

     “Company” means Delta Petroleum Corporation or its successors and assigns.

     “Company Notice” has the meaning specified in Section 11.03(a).

     “Company Notice Date” has the meaning specified in Section 11.03(a).

     “Company Order” has the meaning specified in Section 2.01.

     “Continuing Director” means a director who either was a member of the Board of Directors on
April 19, 2007, or who becomes a member of the Board of Directors subsequent to that date and whose
election, appointment or nomination for election by 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.

     “Conversion Agent” means the office or agency appointed by the Company where Securities may be
presented for conversion. The Conversion Agent appointed by the Company shall initially be the
Trustee.

     “Conversion Date” has the meaning specified in Section 12.01(c).

     “Conversion Notice” has the meaning specified in Section 12.01(c).

     “Conversion Price” means, in respect of each $1,000 principal amount of Securities, $1,000
divided by the Conversion Rate, as may be adjusted from time to time as set forth herein.

     “Conversion Rate” means, in respect of each $1,000 principal amount of Securities, initially
32.9598 shares of Common Stock, subject to adjustments as set forth herein.

2

 

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

     “Daily VWAP” means the per share volume-weighted average price as displayed under the heading
“Bloomberg VWAP” on Bloomberg page “DPTR <equity> VAP” in respect of the period from 9:30
a.m. to 4:00 p.m. (New York City time) on such Trading Day (or if such volume-weighted average
price is unavailable, the market value of one share of Common Stock on such Trading Day on the
Nasdaq Global Market or otherwise as the Company’s Board of Directors determines in good faith
using a volume-weighted method); provided that after the consummation of a Fundamental Change in
which the consideration is comprised entirely of cash, “Daily VWAP” means the cash price per share
of Common Stock received by holders of shares of the Common Stock in such Fundamental Change.

     “Default” means any event which is, or after notice or passage of time or both would be, an
Event of Default.

     “Defaulted Interest” has the meaning specified in Section 2.14.

     “Definitive Securities” mean certificated Securities that are not Global Securities.

     “Determination Date” has the meaning specified in Section 12.02(l).

     “DTC” means The Depository Trust Company, its nominees and their respective successors and
assigns, or such other depository institution hereinafter appointed by the Company pursuant to the
terms of this Indenture.

     “Effective Date” has the meaning specified in Section 12.03(b).

     “Event of Default” has the meaning specified in Section 6.01.

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

     “Ex-Dividend Date” means, in respect of a dividend or distribution to holders of Common Stock,
the first date upon which a sale of the Common Stock does not automatically transfer the right to
receive the relevant dividend or distribution from the seller of the Common Stock to its buyer.

     “Expiration Time” has the meaning specified in Section 12.02(e).

     “Fair Market Value” means the amount that a willing buyer would pay a willing seller in an
arm’s length transaction.

     A “Fundamental Change” shall be deemed to have occurred at such time after the original
issuance of the Securities as any of the following occurs:

3

 

	 	(1)	 	any “person” or “group” within the meaning of Section 13(d) of the Exchange
Act, other than the Company, any Subsidiary of the Company or any employee benefit plan
of the Company or any such Subsidiary, files a Schedule TO or any other schedule, form
or report under the Exchange Act disclosing that such person or group has become the
Beneficial Owner of Common Equity of the Company representing more than 50% of the
ordinary voting power of the Company’s Common Equity;
	 
	 	(2)	 	consummation of any share exchange, consolidation or merger of the Company
pursuant to which the Common Stock will be converted into cash, securities or other
property or any conveyance, transfer, sale, lease or disposition (in one transaction or
a series of 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 of the
Company’s Subsidiaries; provided, however, that a transaction where the holders of more
than 50% of all classes of the Company’s Common Equity immediately prior to such
transaction own, directly or indirectly, more than 50% of all classes of Common Equity
of the continuing or surviving corporation or transferee or parent thereof immediately
after such event shall not be a Fundamental Change;
	 
	 	(3)	 	Continuing Directors cease to constitute at least a majority of the Board of
Directors;
	 
	 	(4)	 	the stockholders of the Company approve any plan or proposal for the
liquidation or dissolution of the Company; or
	 
	 	(5)	 	the Common Stock (or other common stock into which the Securities are then
convertible) ceases to be listed on a national securities exchange (registered under
Section 6 of the Exchange Act) or quoted on the Nasdaq Global Select Market or the
Nasdaq Global Market (to the extent that the Nasdaq Global Select Market or the Nasdaq
Global Market is not at such time a national securities exchange) or another
established automated over-the-counter trading market in the United States;

provided, however, that a Fundamental Change shall not be deemed to have occurred if at least 90%
of the consideration received or to be received by the holders of the Common Stock, excluding cash
payments for fractional shares, in connection with the transaction or transactions constituting the
Fundamental Change consists of shares of common stock traded on a national securities exchange or
quoted on the Nasdaq Global Select Market or the Nasdaq Global Market (to the extent that the
Nasdaq Global Select Market or the Nasdaq Global Market is not at such time a national securities
exchange) or which shall be so traded or quoted when issued or exchanged in connection with such
Fundamental Change (such securities being referred to as “Publicly Traded Securities”) and as a
result of such transaction or transactions the Securities become convertible into such Publicly
Traded Securities pursuant to the terms of this Indenture.

4

 

     “Fundamental Change Purchase Date” has the meaning specified in Section 11.01.

     “Fundamental Change Purchase Notice” has the meaning specified in Section 11.01(b).

     “Fundamental Change Purchase Price” has the meaning specified in Section 11.01.

     “GAAP” means generally accepted accounting principles set forth in the opinions and
pronouncements of the (i) Public Company Accounting Oversight Board, (ii) statements and
pronouncements of the Financial Accounting Standards Board, (iii) in such other statements by such
other entity as may be approved by a significant segment of the accounting profession as in effect
from time to time and (iv) the rules and regulations of the Commission governing the inclusion of
financial statements in period reports required to be filed pursuant to Section 13 of the Exchange
Act, including opinions and pronouncements in staff accounting bulletins and similar written
statements from the accounting staff of the Commission.

     “Global Securities” means certificated Securities in global form, without interest coupons,
substantially in the form of Exhibit A hereto and registered in the name of DTC or a nominee of
DTC.

     “Global Security Legend” has the meaning specified in Section 2.03.

     “Guarantee” means any obligation, contingent or otherwise, of any Person directly or
indirectly guaranteeing any debt of any other Person and any obligation, direct or indirect,
contingent or otherwise, of such Person:

	 	(1)	 	to purchase or pay (or advance or supply funds for the purchase or payment of)
such debt of such other Person (whether arising by virtue of partnership arrangements,
or by agreement to keep-well, to purchase assets, goods, securities or services, to
take-or-pay, or to maintain financial statement conditions or otherwise); or
	 
	 	(2)	 	entered into for purposes of assuring in any other manner the obligee of such
debt of the payment thereof or to protect such obligee against loss in respect thereof
(in whole or in part);

provided, however, that the term “Guarantee” will not include endorsements for collection or
deposit in the ordinary course of business. The term “Guarantee” used as a verb has a corresponding
meaning.

     “Guaranteed Obligations” has the meaning specified in Section 10.01.

     “Holder” means the Person in whose name a Security is registered in the Securities Register.

     “Indenture” means this Indenture, as amended or supplemented from time to time.

5

 

     “Initial Securities” has the meaning specified in Section 2.01.

     “Issue Date” means April 25, 2007.

     “Last Reported Sale Price” of the Common Stock on any date means:

     (a) 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 asked prices) on the Nasdaq Global Market on that date (or, if no closing sale price is
reported, the last reported sale price);

     (b) if the Common Stock is not quoted on the Nasdaq Global Market, the closing sale price per
share (or, if no closing sale price is reported, the last reported sale price) as reported on that
date in composite transactions for the principal national or regional securities exchange on which
the Common Stock is traded;

     (c) if the Common Stock is not listed for trading on a national or regional securities
exchange, the last quoted bid price for the Common Stock on that date in the over-the-counter
market as reported by Pink Sheets LLC or similar organization; or

     (e) if the Common Stock is not so quoted by Pink Sheets LLC or similar organization, the
average of the mid-point of the last bid and ask prices for the Common Stock on that date from a
nationally recognized independent investment banking firm selected by the Company for this purpose.

     “Legal Holiday” has the meaning specified in Section 13.08.

     “Market Disruption Event” means, if the Common Stock is quoted on the Nasdaq Global Market or
listed on another U.S. national or regional securities exchange, the occurrence or existence prior
to 1:00 p.m. on any Trading Day for the Common Stock for 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.

     “Officer” means the Chairman of the Board, the Chief Executive Officer, the President, the
Chief Financial Officer, any Vice President, the Treasurer or the Secretary of the Company. The
term Officer of any Subsidiary Guarantor has a correlative meaning.

     “Officers’ Certificate” means a certificate signed by two Officers of the Company or the
Subsidiary Guarantors, as applicable.

     “Opinion of Counsel” means a written opinion from legal counsel who is acceptable to the
Trustee. The counsel may be an employee of or counsel to the Company or the Trustee.

     “Paying Agent” has the meaning specified in Section 2.05.

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     “Person” means any individual, corporation, partnership, joint venture, association,
joint-stock company, trust, unincorporated organization, limited liability company, government or
any agency or political subdivision hereof or any other entity.

     “Preferred Stock”, as applied to the Capital Stock of any corporation, means Capital Stock of
any class or classes (however designated) which is preferred as to the payment of dividends, or as
to the distribution of assets upon any voluntary or involuntary liquidation or dissolution of such
corporation, over shares of Capital Stock of any other class of such corporation.

     “Publicly Traded Securities” has the meaning specified in the definition of “Fundamental
Change” in this Section 1.01.

     “Purchase Date” has the meaning specified in Section 11.02(a).

     “Purchase Notice” has the meaning specified in Section 11.02(a)(i).

     “Purchase Price” has the meaning specified in Section 11.02(a).

     “Record Date” means, in respect of a dividend or distribution to holders of Common Stock, the
date fixed for determination of holders of Common Stock entitled to receive such dividend or
distribution.

     “Redemption Date” means, with respect to any redemption of Securities, the date of redemption
with respect thereto.

     “Redemption Price” has the meaning specified in Section 5.01.

     “Reference Property” has the meaning specified in Section 12.04(a)(iv).

     “Registrar” has the meaning specified in Section 2.05.

     “Regular Record Date” for the payment of interest on the Securities, means the April 15
(whether or not a Business Day) immediately preceding an interest payment date on May 1 and the
October 15 (whether or not a Business Day) immediately preceding an interest payment date on
November 1.

     “Reorganization Event” has the meaning specified in Section 12.04(a)(iv).

     “Securities” has the meaning ascribed to it in the second introductory paragraph of this
Indenture.

     “Securities Custodian” means the custodian with respect to the Global Security (as appointed
by DTC), or any successor Person thereto and shall initially be the Trustee.

     “Securities Register” has the meaning specified in Section 2.05.

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     “Significant Subsidiary” means any Subsidiary that would be a “Significant Subsidiary” of the
Company within the meaning of Rule 1-02 under Regulation S-X promulgated by the Commission.

     “Special Interest Payment Date” has the meaning specified in Section 2.14(a).

     “Special Record Date” has the meaning specified in Section 2.14(a).

     “Spin-Off” has the meaning specified in Section 12.02(c).

     “Stated Maturity” means, with respect to any security, the date specified in such security as
the fixed date on which the payment of principal of such security is due and payable, including
pursuant to any mandatory redemption provision, but shall not include any contingent obligations to
repay, redeem or repurchase any such principal prior to the date originally scheduled for the
payment thereof.

     “Stock Price” means, for purposes of Section 12.03, the price per share of Common Stock paid
in connection with a Fundamental Change pursuant to clause (1), (2) or (5) of the definition of
“Fundamental Change”, which shall be equal to (i) if such Fundamental Change is a transaction
pursuant to clause (2) of the definition thereof, and holders of Common Stock receive only cash in
such transaction, the cash amount paid per share of Common Stock and (ii) in all other cases, the
average of the Last Reported Sale Prices of the Common Stock over the five Trading Day period
ending on the Trading Day preceding the Effective Date of such Fundamental Change.

     “Subsidiary” of the Company means (i) a corporation a majority of whose Capital Stock with
voting power, under ordinary circumstances, to elect directors is at the time, directly or
indirectly, owned by the Company, by the Company and one or more Subsidiaries of the Company or by
one or more Subsidiaries of the Company or (ii) any other Person (other than a corporation) in
which the Company, one or more Subsidiaries of the Company or the Company and one or more
Subsidiaries of the Company, directly or indirectly, at the date of determination thereof, has
greater than a 50% ownership interest.

     “Subsidiary Guarantee” means, individually, any Guarantee of the Guaranteed Obligations by a
Subsidiary Guarantor pursuant to the terms of this Indenture and any supplemental indenture hereto,
and, collectively, all such Guarantees.

     “Subsidiary Guarantor” means each of the Company’s existing and future Wholly-Owned
Subsidiaries.

     “Successor Company” has the meaning specified in Section 4.01(a).

     “TIA” means the Trust Indenture Act of 1939, as in effect on the date of this Indenture,
except as provided in Section 9.03.

     “Trading Day” means a day during which:

8

 

     (a) the Nasdaq Global Market is open for trading, or if the Common Stock is not quoted on the
Nasdaq Global Market, the principal U.S. national or regional securities exchange on which the
Common Stock is listed or open for trading, or if the Common Stock is not so quoted and listed, any
Business Day; and

     (b) there is no Market Disruption Event.

     “Trust Officer” means, when used with respect to the Trustee, the officer within the corporate
trust department of the Trustee having direct responsibility for the administration of this
Indenture.

     “Trustee” means the party named as such in this Indenture until a successor replaces it and,
thereafter, means the successor.

     “UCC” means the Uniform Commercial Code as in effect in the State of New York.

     “Wholly-Owned Subsidiary” means a Subsidiary all of the outstanding Capital Stock of which,
other than directors’ qualifying shares, shall at the time be owned by the Company or by one or
more Wholly-Owned Subsidiaries, or by the Company in conjunction with one or more Wholly-Owned
Subsidiaries.

     Section 1.02 . Incorporation by Reference of TIA. This Indenture is subject to the mandatory
provisions of the TIA which are incorporated by reference in and made a part of this Indenture.
The following TIA terms have the following meanings:

     “Commission” means the United States Securities and Exchange Commission.

     “indenture securities” means the Securities.

     “indenture security holder” means a Holder.

     “indenture to be qualified” means this Indenture.

     “indenture trustee” or “institutional trustee” means the Trustee.

     “obligor” on the indenture securities means the Company and any other obligor on the
Securities.

     All other TIA terms used in this Indenture that are defined by the TIA, defined in the TIA by
reference to another statute or defined by Commission rule have the meanings assigned to them by
such definitions.

9

 

     Section 1.03 . Rules of Construction. Unless the context otherwise requires:(a) a term has
the meaning assigned to it;

     (b) an accounting term not otherwise defined has the meaning assigned to it in accordance with
GAAP;

     (c) “or” is not exclusive;

     (d) “including” means including without limitation;

     (e) words in the singular include the plural and words in the plural include the singular;

     (f) the principal amount of any non-interest bearing or other discount security at any date
shall be the principal amount thereof that would be shown on a balance sheet of the issuer dated
such date prepared in accordance with GAAP; and

     (g) the principal amount of any Preferred Stock shall be the greater of (i) the maximum
liquidation value of such Preferred Stock and (ii) the maximum mandatory redemption or mandatory
repurchase price with respect to such Preferred Stock.

ARTICLE 2

The Securities

     Section 2.01 . Title; Amount and Issue of Securities; Principal and Interest . The
Securities shall be known and designated as the “3 3/4% Convertible Senior Notes due 2037” of the
Company. Upon the execution of this Indenture, or from time to time thereafter, Securities may be
executed by the Company as provided in Section 2.04 and delivered to the Trustee for
authentication, and the Trustee shall thereupon authenticate and deliver Securities upon a written
order of the Company signed by an Officer of the Company (a “Company Order”), without further
action by the Company hereunder. In addition, Securities may be authenticated and delivered upon
registration of, transfer of, or in exchange for, or in lieu of other Securities pursuant to
Section 2.04, 2.08, 2.09, 2.10, 2.11, 2.12, 5.07, 9.05, 11.03, or 12.01. The Securities shall be
issuable in denominations of $1,000 or multiples thereof.

     The aggregate principal amount of Securities which may be authenticated and delivered under
this Indenture is unlimited. The Company may, without the consent of the Holders of Securities,
issue additional Securities (the “Additional Securities”) from time to time in the future with the
same terms (other than issue date, issue price and the first interest payment date) and the same
CUSIP number as the Securities originally issued under this Indenture (the “Initial Securities”) in
an unlimited principal amount, provided that such Additional Securities must be part of the same
issue as the Initial Securities for United States federal income tax purposes. The
Initial Securities and any such Additional Securities will constitute a single series of debt
securities, and in circumstances in which this Indenture provides for the Holders of Securities to
vote or take any action, the Holders of Initial Securities and the Holders of any such Additional
Securities will vote or take that action as a single class.

10

 

     (a) The Securities shall mature on May 1, 2037, unless earlier converted, redeemed or
repurchased in accordance with the provisions hereof.

     (b) Interest on the Securities shall accrue from and including the date specified on the face
of such Securities until the principal thereof is paid or made available for payment. Interest
shall be payable semiannually in arrears on May 1 and November 1 in each year, commencing November
1, 2007.

     (c) The Securities shall be jointly and severally Guaranteed by the Subsidiary Guarantors as
provided in Article 10.

     (d) A Holder of any Security at 5:00 p.m., New York City time, on a Regular Record Date shall
be entitled to receive interest, on such Security on the corresponding interest payment date,
notwithstanding the conversion of such Securities at any time after 5:00 p.m., New York City time,
on such Regular Record Date. Securities surrendered for conversion during the period after 5:00
p.m., New York City time, on any Regular Record Date to 9:00 a.m., New York City time, on the
corresponding interest payment date must be accompanied by payment of an amount equal to the
interest that the Holder is to receive on the Securities. Notwithstanding the foregoing, no such
payment of interest need be made by any converting Holder (i) if the Company has specified a
Redemption Date that is after a Regular Record Date and on or prior to the corresponding interest
payment date, (ii) if the Company has specified a Fundamental Change Purchase Date that is after a
Regular Record Date and on or prior to the corresponding interest payment date, or (iii) to the
extent of any overdue interest existing at the time of conversion of such Security. Except as
described above, no interest on converted Securities will be payable by the Company on any interest
payment date subsequent to the date of conversion and delivery of Shares of Common Stock, cash, or
a combination of cash and shares of Common Stock, as applicable, pursuant to Article 12 hereunder,
together with any cash payment for any fractional share, upon conversion will be deemed to satisfy
the Company’s obligation to pay the principal amount of the Securities and accrued and unpaid
interest, to, but not including, the related Conversion Date.

     (e) Principal of and interest on Global Securities shall be payable to DTC in immediately
available funds.

     (f) Principal on Definitive Securities shall be payable at the office or agency of the Company
maintained for such purpose, which initially shall be the corporate trust office of the Trustee at
its agency in New York City. Interest on Definitive Securities will be payable (i) to Holders
having an aggregate principal amount of $5,000,000 or less, by check mailed to the Holders of these
Securities and (ii) to Holders having an aggregate principal amount of more than $5,000,000, either
by check mailed to each Holder or, upon application by a Holder to the
Registrar not later than the relevant Regular Record Date, by wire transfer in immediately
available funds to such Holder’s account within the United States, which application shall remain
in effect until the Holder notifies, in writing, the Registrar to the contrary.

11

 

     Section 2.02 . Form of Securities. Except as otherwise provided pursuant to this Section 2.02, the
Securities are issuable in fully registered form without coupons in substantially the form of
Exhibit A hereto, with such applicable legends as are provided for in Section 2.03. The Securities
are not issuable in bearer form. The terms and provisions contained in the form of Security shall
constitute, and are hereby expressly made, a part of this Indenture and to the extent applicable,
the Company, the Subsidiary Guarantors and the Trustee, by their execution and delivery of this
Indenture, expressly agree to such terms and provisions and to be bound thereby. Any of the
Securities may have such letters, numbers or other marks of identification and such notations,
legends and endorsements as the officers executing the same may approve (execution thereof to be
conclusive evidence of such approval) and as are not inconsistent with the provisions of this
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 Securities may be listed or designated for issuance, or to conform to usage.

     The Securities shall be issued initially in the form of one or more permanent Global
Securities, with the applicable legends as provided in Section 2.03. Each Global Security shall be
duly executed by the Company and authenticated and delivered by the Trustee, and shall be
registered in the name of DTC or its nominee and retained by the Trustee, as Securities Custodian,
at its corporate trust office, for credit to the accounts of the Agent Members holding the
Securities evidenced thereby. The aggregate principal amount of the Global Securities may from
time to time be increased or decreased by adjustments made on the records of the Trustee, as
Securities Custodian, and of DTC or its nominee, as hereinafter provided.

     Section 2.03 . Global Security Legend.

     Each Global Security shall bear the following legend (the “Global Security Legend”) on
the face thereof:

“UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY
TRUST COMPANY, A NEW YORK CORPORATION (“DTC”), NEW YORK, NEW YORK, TO THE COMPANY OR ITS AGENT
FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN
THE NAME OF CEDE & CO. OR 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.

TRANSFERS OF THIS GLOBAL SECURITY SHALL BE LIMITED TO TRANSFERS IN WHOLE, BUT NOT IN PART, TO
NOMINEES OF DTC OR TO A SUCCESSOR THEREOF OR SUCH SUCCESSOR’S NOMINEE AND TRANSFERS OF PORTIONS
OF THIS GLOBAL SECURITY SHALL BE LIMITED TO TRANSFERS MADE IN

12

 

ACCORDANCE WITH THE RESTRICTIONS
SET FORTH IN THE INDENTURE REFERRED TO IN THE TERMS OF SECURITIES ATTACHED HERETO.”

     Section 2.04 . Execution and Authentication. One Officer shall sign the Securities for the
Company by manual or facsimile signature. If an Officer whose signature is on a Security no longer
holds that office at the time the Trustee authenticates the Security, but was an authorized Officer
at the time when he authenticated the Security, the Security shall be valid nevertheless.

     A Security shall not be valid until an authorized signatory of the Trustee by manual or
facsimile signature authenticates the Security. Upon receipt of a Company Order, the Trustee shall
authenticate a Security executed by the Company. The signature of the Trustee on a Security shall
be conclusive evidence that such Security has been duly and validly authenticated and issued under
this Indenture. A Security shall be dated the date of its authentication.

     The Trustee may appoint an agent (the “Authenticating Agent”) reasonably acceptable to the
Company to authenticate the Securities. Any such instrument shall be evidenced by an instrument
signed by a Trust Officer of the Trustee, a copy of which shall be furnished to the Company.
Unless limited by the terms of such appointment, any such Authenticating Agent may authenticate
Securities whenever the Trustee may do so. Each reference in this Indenture to authentication by
the Trustee includes authentication by the Authenticating Agent. An Authenticating Agent has the
same rights as any Registrar, Paying Agent or agent for service of notices and demands.

     In case the Company or any Subsidiary Guarantor, pursuant to Article 4, shall be consolidated
or merged with or into any other Person or shall convey, transfer, lease or otherwise dispose of
its properties and assets substantially as an entirety to any Person, and the successor Person
resulting from such consolidation, or surviving such merger, or into which the Company or any
Subsidiary Guarantor shall have been merged, or the Person which shall have received a conveyance,
transfer, lease or other disposition as aforesaid, shall have executed an indenture supplemental
hereto with the Trustee pursuant to Article 4, any of the Securities authenticated or delivered
prior to such consolidation, merger, conveyance, transfer, lease or other disposition may, from
time to time, at the request of the successor Person, be exchanged for other Securities executed in
the name of the successor Person with such changes in phraseology and form as may be appropriate,
but otherwise in substance of like tenor as the Securities surrendered for such exchange and of
like principal amount; and the Trustee, upon Company Order of the successor Person, shall
authenticate and deliver Securities as specified in such order for the purpose of such
exchange. If Securities shall at any time be authenticated and delivered in any new name of a
successor Person pursuant to this Section 2.04 in exchange or substitution for or upon registration
of transfer of any Securities, such successor Person, at the option of the Holders but without
expense to them, shall provide for the exchange of all Securities at the time outstanding for
Securities authenticated and delivered in such new name.

     Section 2.05 . Registrar and Paying Agent. The Company or its agent shall maintain an office or
agency where Securities may be presented for registration of transfer or for exchange (the
“Registrar”) and an office or agency where Securities may be presented for payment (the

13

 

“Paying
Agent”). The Registrar shall keep a register of the Securities and of their transfer and exchange
(the “Securities Register”). The Company may have one or more co-registrars and one or more
additional paying agents. The term “Paying Agent” includes any additional paying agent and the
term “Registrar” includes any co-registrar.

     The Company shall enter into an appropriate agency agreement with any Registrar, Paying Agent
or co-registrar not a party to this Indenture, which shall incorporate the terms of the TIA. The
agreement shall implement the provisions of this Indenture that relate to such agent. The Company
shall notify the Trustee of the name and address of each such agent. If the Company fails to
maintain a Registrar or Paying Agent, the Trustee shall act as such and shall be entitled to
appropriate compensation therefor pursuant to Section 7.07. The Company or any of its domestically
organized, wholly owned Subsidiaries may act as Paying Agent, Registrar, co registrar or transfer
agent.

     The Company initially appoints the Trustee as Registrar and Paying Agent for the Securities.
The Company may remove any Registrar or Paying Agent upon written notice to such Registrar or
Paying Agent and to the Trustee; provided, however, that no such removal shall become effective
until (i) acceptance of any appointment by a successor as evidenced by an appropriate agreement
entered into by the Company and such successor Registrar or successor Paying Agent, as the case may
be, and delivered to the Trustee or (ii) notification to the Trustee that the Trustee shall serve
as Registrar or Paying Agent until the appointment of a successor in accordance with clause (i)
above. The Registrar or Paying Agent may resign at any time upon written notice to the Company and
the Trustee.

     Section 2.06 . Paying Agent to Hold Money in Trust. By no later than 11:00 a.m., New York City
time, on the date on which any principal of or interest on any Security is due and payable, the
Company shall deposit with the Paying Agent a sum sufficient in immediately available funds to pay
such principal or interest, when due. The Company shall require each Paying Agent (other than the
Trustee) to agree in writing that such Paying Agent shall hold in trust for the benefit of Holders
or the Trustee all money held by such Paying Agent for the payment of principal of or interest on
the Securities and shall notify the Trustee in writing of any default by the Company in making any
such payment. If the Company or a Subsidiary acts as Paying Agent, it shall segregate the money
held by it as Paying Agent and
hold it as a separate trust fund. The Company at any time may require a Paying Agent (other than
the Trustee) to pay all money held by it to the Trustee and to account for any funds disbursed by
such Paying Agent. Upon complying with this Section 2.06, the Paying Agent (if other than the
Company or a Subsidiary) shall have no further liability for the money delivered to the Trustee.
Upon any bankruptcy, reorganization or similar proceeding with respect to the Company, the Trustee
shall serve as Paying Agent for the Securities.

     Section 2.07 . Holder Lists. The Trustee shall preserve in as current a form as is reasonably
practicable the most recent list available to it of the names and addresses of Holders and shall
otherwise comply with TIA § 312(a). If the Trustee is not the Registrar, or to the extent
otherwise required under the TIA, the Company, on its own behalf and on behalf of each of the
Subsidiary Guarantors, shall furnish or cause the Registrar to furnish to the Trustee, in

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writing
at least five Business Days before each interest payment date and at such other times as the
Trustee may request in writing, a list in such form and as of such date as the Trustee may
reasonably require of the names and addresses of Holders and the Company shall otherwise comply
with TIA § 312(a).

     Section 2.08 . General Provisions Relating to Transfer and Exchange. The Securities are issuable
only in registered form. A Holder may transfer a Security only by written application to the
Registrar stating the name of the proposed transferee and otherwise complying with the terms of
this Indenture. No such transfer shall be effected until, and such transferee shall succeed to the
rights of a Holder only upon, final acceptance and registration of the transfer by the Registrar in
the Securities Register. Furthermore, any Holder of a Global Security shall, by acceptance of such
Global Security, agree that transfers of beneficial interests in such Global Security may be
effected only through a book-entry system maintained by the Holder of such Global Security (or its
agent) and that ownership of a beneficial interest in the Global Security shall be required to be
reflected in a book-entry.

     When Securities are presented to the Registrar with a request to register the transfer or to
exchange them for an equal aggregate principal amount of Securities of other authorized
denominations, the Registrar shall register the transfer or make the exchange as requested if its
requirements for such transactions are met (including that such Securities are duly endorsed or
accompanied by a written instrument of transfer duly executed by the Holder thereof or by an
attorney who is authorized in writing to act on behalf of the Holder). Subject to Section 2.04, to
permit registrations of transfers and exchanges, the Company shall execute and the Trustee shall
authenticate Securities at the Registrar’s request. No service charge shall be made for any
registration of transfer or exchange or redemption of the Securities, but the Company may require
payment of a sum sufficient to cover any transfer tax or similar governmental charge payable in
connection therewith (other than any such transfer taxes or other similar governmental charge
payable upon exchanges in connection with which a Security is issued to a Person other than the
Holder submitting the Security for exchange).

     Neither the Company nor the Registrar shall be required to exchange or register a transfer of
any Securities:

     (a) for a period of 15 calendar days prior to the mailing of a notice of redemption of
Securities selected for redemption under Article 5;

     (b) so selected for redemption or, if a portion of any Security is selected for redemption,
the portion thereof selected for redemption; or

     (c) surrendered for conversion or, if a portion of any Security is surrendered for conversion,
the portion thereof surrendered for conversion.

     The Trustee shall have no obligation or duty to monitor, determine or inquire as to compliance
with any restrictions on transfer imposed under this Indenture or under applicable law with respect
to any transfer of any interest in any Security (including any transfers between

15

 

beneficial owners
of any Global Security) other than to require delivery of such certificates and other documentation
or evidence as are expressly required by, and to do so if and when expressly required by the terms
of, this Indenture, and to examine the same to determine substantial compliance as to form with the
express requirements hereof.

     Section 2.09 . Book-Entry Provisions for the Global Securities. (a) The Global Securities
initially shall:

	 	(i)	 	be registered in the name of DTC (or a nominee thereof);
	 
	 	(ii)	 	be delivered to the Trustee as Securities Custodian; and
	 
	 	(iii)	 	bear the Global Security Legend set forth in Section 2.03.

     Members of, or participants in, DTC (“Agent Members”) shall have no rights under this
Indenture with respect to any Global Security held on their behalf by DTC, or the Trustee as its
custodian, or under such Global Security, and DTC may be treated by the Company, the Trustee and
any agent of the Company or the Trustee as the absolute owner of such Global Security for all
purposes whatsoever. Notwithstanding the foregoing, nothing contained herein shall prevent the
Company, the Trustee or any agent of the Company or Trustee from giving effect to any written
certification, proxy or other authorization furnished by DTC or impair, as between DTC and the
Agent Members, the operation of customary practices governing the exercise of the rights of a
Holder of any Security.

     (b) The Holder of a Global Security may grant proxies and otherwise authorize any Person,
including Agent Members and Persons that may hold interests through Agent Members, to take any
action which a Holder is entitled to take under this Indenture or the Securities.

     (c) A Global Security may not be transferred, in whole or in part, to any Person other than
DTC (or a nominee thereof), and no such transfer to any such other Person may be
registered. Beneficial interests in a Global Security may be transferred in accordance with
the rules and procedures of DTC.

     (d) If at any time:

     (i) DTC notifies the Company in writing that it is unwilling or unable to continue
to act as depositary for the Global Securities and a successor depositary for the Global
Securities is not appointed by the Company within 90 days of such notice;

     (ii) DTC ceases to be registered as a “clearing agency” under the Exchange Act and a
successor depositary for the Global Securities is not appointed by the Company within 90
days of such cessation;

     (iii) the Company, at its option, notifies the Trustee in writing that it elects to
cause the issuance of the Definitive Securities under this Indenture in exchange for

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all
or any part of the Securities represented by a Global Security or Global Securities,
subject to the procedures of DTC; or

     (iv) an Event of Default has occurred and is continuing and the Registrar has
received a request from DTC or the Company for the issuance of Definitive Securities in
exchange for such Global Security or Global Securities;

DTC shall surrender such Global Security or Global Securities to the Trustee for cancellation and
the Company shall execute, and the Trustee, upon receipt of an Officers’ Certificate and Company
Order for the authentication and delivery of Securities, shall authenticate and make available for
delivery in exchange for such Global Security or Global Securities, Definitive Securities in an
aggregate principal amount equal to the aggregate principal amount of such Global Security or
Global Securities. Such Definitive Securities shall be registered in such names as DTC shall
identify in writing as the beneficial owners of the Securities represented by such Global Security
or Global Securities (or any nominee thereof).

     (e) Notwithstanding the foregoing, in connection with any transfer of beneficial interests in
a Global Security to the beneficial owners thereof pursuant to Section 2.09(d), the Registrar shall
reflect on its books and records the date and a decrease in the principal amount of such Global
Security in an amount equal to the principal amount of the beneficial interests in such Global
Security to be transferred.

     (f) The Registrar shall retain copies of all certifications, letters, notices and other
written communications received pursuant to this Section 2.09. The Company shall have the right to
inspect and make copies of all such letters, notices or other written communications at any
reasonable time upon the giving of reasonable written notice to the Registrar.

     Section 2.10 . Mutilated, Destroyed, Lost or Wrongfully Taken Securities. If a mutilated Security
is surrendered to the Registrar or if the Holder of a Security claims that the Security has been
lost, destroyed or wrongfully taken, the Company shall issue and the
Trustee shall authenticate a replacement Security if the requirements of Section 8-405 of the UCC
are met, such that the Holder (a) notifies the Company or the Trustee within a reasonable time
after such Holder has notice of such loss, destruction or wrongful taking and the Registrar has not
registered a transfer prior to receiving such notification, (b) makes such request to the Company
or Trustee prior to the Security being acquired by a protected purchaser as defined in Section
8-303 of the UCC and (c) satisfies any other reasonable requirements of the Trustee. Such Holder
shall furnish an indemnity bond sufficient in the judgment of the Company and the Trustee to
protect the Company, the Trustee, the Paying Agent and the Registrar from any loss which any of
them may suffer if a Security is replaced, and, in the absence of notice to the Company or the
Trustee that such Security has been acquired by a bona fide purchaser, the Company shall execute
and upon Company Order the Trustee shall authenticate and make available for delivery, in exchange
for any such mutilated Security or in lieu of any such destroyed, lost or wrongfully taken
Security, a new Security of like tenor and principal amount, bearing a number not contemporaneously
outstanding.

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     In case any such mutilated, destroyed, lost or wrongfully taken Security has become due and
payable, the Company, through the Paying Agent, in its discretion may, instead of issuing a new
Security, pay such Security.

     Upon the issuance of any new Security under this Section 2.10, the Company may require the
payment by the Holder of a sum sufficient to cover any tax or other governmental charge that may be
imposed in relation thereto and any other expenses (including the fees and expenses of the Trustee)
in connection therewith.

     Every new Security issued pursuant to this Section 2.10 in lieu of any mutilated, destroyed,
lost or wrongfully taken Security shall constitute an original additional contractual obligation of
the Company and any other obligor upon the Securities, whether or not the mutilated, destroyed,
lost or wrongfully taken Security shall be at any time enforceable by anyone, and shall be entitled
to all benefits of this Indenture equally and ratably with any and all other Securities duly issued
hereunder.

     The provisions of this Section 2.10 are exclusive and shall preclude (to the extent lawful)
all other rights and remedies with respect to the replacement or payment of mutilated, destroyed,
lost or wrongfully taken Securities.

     Section 2.11 . Outstanding Securities. Securities outstanding at any time are all Securities
authenticated by the Trustee except for those cancelled by it, those delivered to it for
cancellation and those described in this Section 2.11 as not outstanding. A Security does not
cease to be outstanding in the event the Company or a Subsidiary of the Company holds the Security;
provided, however, that (i) for purposes of determining which Securities are outstanding for
consent or voting purposes hereunder, the provisions of Section 13.06 shall apply and (ii) in
determining whether the Trustee shall be protected in making a determination whether the Holders of
the requisite principal amount of outstanding Securities are present at a meeting of Holders of
Securities for quorum purposes or
have consented to or voted in favor of any request, demand, authorization, direction, notice,
consent, waiver, amendment or modification hereunder, or relying upon any such quorum, consent or
vote, only Securities which a Trust Officer of the Trustee actually knows to be held by the Company
or an Affiliate of the Company shall not be considered outstanding.

     If a Security is replaced or paid pursuant to Section 2.10, it ceases to be outstanding unless
the Trustee and the Company receive proof satisfactory to them that the replaced Security is held
by a bona fide purchaser.

     If the Paying Agent segregates and holds in trust, in accordance with this Indenture, on a
Redemption Date, Purchase Date, Fundamental Change Purchase Date or at Stated Maturity, money
sufficient to pay all principal and interest payable on that date with respect to the Securities
(or portions thereof) to be redeemed, purchased or maturing, as the case may be, and the Paying
Agent is not prohibited from paying such money to the Holders on that date pursuant to the terms of
this Indenture, then on and after that date such Securities (or portions thereof) cease to be
outstanding and interest on them ceases to accrue.

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     Section 2.12 . Temporary Securities. In the event that Definitive Securities are to be issued
under the terms of this Indenture, until such Definitive Securities are ready for delivery, the
Company may prepare and upon receipt of a Company Order the Trustee shall authenticate temporary
Securities. Temporary Securities shall be substantially in the form of Definitive Securities but
may have variations that the Company considers appropriate for temporary Securities. Without
unreasonable delay, the Company shall prepare and upon receipt of a Company Order the Trustee shall
authenticate Definitive Securities. After the preparation of Definitive Securities, the temporary
Securities shall be exchangeable for Definitive Securities upon surrender of the temporary
Securities at any office or agency maintained by the Company for that purpose and such exchange
shall be without charge to the Holder. Upon surrender for cancellation of any one or more
temporary Securities, the Company shall execute, and the Trustee shall authenticate and make
available for delivery in exchange therefor, one or more Definitive Securities representing an
equal principal amount of Securities. Until so exchanged, the Holder of temporary Securities shall
in all respects be entitled to the same benefits under this Indenture as a Holder of Definitive
Securities.

     Section 2.13 . Cancellation. The Company at any time may deliver Securities to the Trustee for
cancellation. The Registrar and the Paying Agent shall forward to the Trustee any Securities
surrendered to them for registration of transfer, exchange or payment. The Trustee and no one else
shall cancel all Securities surrendered for registration of transfer, exchange, payment or
cancellation and dispose of such Securities in accordance with its internal policies and customary
procedures including delivery of a certificate (a “Certificate of Destruction”) describing such
Securities disposed (subject to the record retention requirements of the Exchange Act) or deliver
canceled Securities to the Company pursuant to written direction by an Officer. The Company may
not issue new
Securities to replace Securities it has paid for or delivered to the Trustee for cancellation for
any reason other than in connection with a transfer or exchange.

     At such time as all beneficial interests in a Global Security have either been exchanged for
Definitive Securities, transferred, redeemed, repurchased or canceled, such Global Security shall
be returned by DTC to the Trustee for cancellation or retained and canceled by the Trustee. At any
time prior to such cancellation, if any beneficial interest in a Global Security is exchanged for
Definitive Securities, transferred in exchange for an interest in another Global Security,
redeemed, repurchased or canceled, the principal amount of Securities represented by such Global
Security shall be reduced and an adjustment shall be made on the books and records of the Trustee
(if it is then the Securities Custodian for such Global Security) with respect to such Global
Security, by the Trustee or the Securities Custodian, to reflect such reduction.

     Section 2.14 . Payment of Interest; Defaulted Interest. Interest on any Security which is
payable, and is punctually paid or duly provided for, on any interest payment date shall be paid to
the Person in whose name such Security (or one or more predecessor Securities) is registered at
5:00 p.m., New York City time, on the Regular Record Date for such payment at the office or agency
of the Company maintained for such purpose pursuant to Section 2.05; provided, however, that
interest will be paid at the Stated Maturity only to the Person to whom the principal amount is
paid.

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     Any interest on any Security which is payable, but is not paid when the same becomes due and
payable and such nonpayment continues for a period of 30 calendar days, shall forthwith cease to be
payable to the Holder on the Regular Record Date, and such defaulted interest and (to the extent
lawful) interest on such defaulted interest at the annual rate borne by the Securities plus 1%
(such defaulted interest and interest thereon herein collectively called “Defaulted Interest”)
shall be paid by the Company at its election, in each case, as provided in clause (a) or (b) below:

     (a) The Company, through the Paying Agent, may elect to make payment of any Defaulted Interest
to the Persons in whose names the Securities (or their respective predecessor Securities) are
registered at 5:00 p.m., New York City time, on a Special Record Date (as defined below) for the
payment of such Defaulted Interest, which shall be fixed in the following manner. The Company
shall notify the Trustee in writing of the amount of Defaulted Interest proposed to be paid on each
Security and the date (not less than 30 calendar days after such notice) of the proposed payment
(the “Special Interest Payment Date”), and at the same time the Company shall deposit with the
Trustee an amount of money equal to the aggregate amount proposed to be paid in respect of such
Defaulted Interest or shall make arrangements satisfactory to the Trustee for such deposit prior to
the date of the proposed payment, such money when deposited to be held in trust for the benefit of
the Persons entitled to such Defaulted Interest as in this clause provided. Thereupon the Trustee
shall fix a record date (the “Special Record Date”) for the payment of such Defaulted Interest
which shall be not more than 15 calendar days and not less than 10 calendar days prior to the
Special Interest Payment Date and not less than 10 calendar days after the receipt by the Trustee
of the notice of the proposed payment. The Trustee shall
promptly notify the Company of such Special Record Date, and in the name and at the expense of
the Company, shall cause notice of the proposed payment of such Defaulted Interest and the Special
Record Date and Special Interest Payment Date therefor to be given in the manner provided for in
Section 13.02, not less than 10 calendar days prior to such Special Record Date. Notice of the
proposed payment of such Defaulted Interest and the Special Record Date and Special Interest
Payment Date therefor having been so given, such Defaulted Interest shall be paid on the Special
Interest Payment Date to the Persons in whose names the Securities (or their respective predecessor
Securities) are registered at 5:00 p.m., New York City time, on such Special Record Date and shall
no longer be payable pursuant to the following clause (b).

     (b) The Company may make payment of any Defaulted Interest in any other lawful manner not
inconsistent with the requirements of any securities exchange on which the Securities may be
listed, and upon such notice as may be required by such exchange, if, after notice given by the
Company to the Trustee of the proposed payment pursuant to this clause, such manner of payment
shall be deemed practicable by the Trustee.

     Subject to the foregoing provisions of this Section 2.14, each Security delivered under this
Indenture upon registration of, transfer of or in exchange for or in lieu of any other Security
shall carry the rights to interest accrued and unpaid, and to accrue, which were carried by such
other Security.

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     Section 2.15 . Computation of Interest. Interest on the Securities shall be computed on the basis
of a 360-day year of twelve 30-day months; provided, however, that for any period other than a full
interest period, interest will be computed on the basis of the actual number of days elapsed during
the period and a 360-day year.

     Section 2.16 . CUSIP and ISIN Numbers. The Company in issuing the Securities may use “CUSIP” and
“ISIN” numbers (if then generally in use) and, if so, the Trustee shall use “CUSIP” and “ISIN”
numbers in notices of redemption as a convenience to Holders; provided, however, that any such
notice may state that no representation is made as to the correctness of such numbers either as
printed on the Securities or as contained in any notice of a redemption and that reliance may be
placed only on the other identification numbers printed on the Securities, and any such redemption
shall not be affected by any defect in or omission of such CUSIP or ISIN numbers. The Company
shall promptly notify the Trustee in writing of any change in the CUSIP and ISIN numbers.

ARTICLE 3

Covenants

     Section 3.01 . Payment of Securities
.. The Company, through the Paying Agent, shall promptly pay the principal of and interest on the
Securities on the dates and in the manner provided in the Securities and in this Indenture.
Principal and interest shall be considered paid on the date due if on such date the Trustee or the
Paying Agent holds in accordance with this Indenture immediately available funds sufficient to pay
all principal and interest then due and the Trustee or the Paying Agent, as the case may be, is not
prohibited from paying such money to the Holders on that date pursuant to the terms of this
Indenture.

     The Company shall pay interest on overdue principal at the annual rate borne by the Securities
plus 1%, and it shall pay interest on overdue installments of interest at the same rate to the
extent lawful.

     Notwithstanding anything to the contrary contained in this Indenture, the Company, through the
Paying Agent, may, to the extent it is required to do so by law, deduct or withhold income or other
similar taxes imposed by the United States of America from principal or interest payments
hereunder.

     Section 3.02 . Financial and Other Reports. (a) The Company shall furnish to the Trustee promptly
after filing thereof, copies of all registration statements, current reports and annual, quarterly
or other regular reports that the Company files with the Commission, including, without limitation,
all reports on Form 10-K, 10-Q and 8-K and all certifications and other filings required by Section
302 and Section 906 of the Sarbanes-Oxley Act of 2002, as amended, and the rules and regulations
related thereto.

     (b) To the extent the Company has not furnished the Trustee with a copy of its annual report
filed with the Commission for the applicable fiscal year in accordance with clause (a) of this
Section 3.02, the Company shall furnish to the Trustee within 105 calendar days after the

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close of
each of the Company’s fiscal years, annual audited consolidated financial statements for the
Company and its Subsidiaries, including a consolidated balance sheet as of the end of such period,
related statement of consolidated income, statement of consolidated stockholders’ equity, and
statement of cash flows, accompanied by an unqualified audit report of independent auditors (or, if
the Company is not required to file reports or other information and documents with the Commission
pursuant to Section 13 or Section 15(d) of the Exchange Act, such other statements that would have
been included in annual reports filed with the Commission if the Company were subject to the
reporting requirements of Section 13 or Section 15(d) of the Exchange Act).

     (c) To the extent the Company has not furnished the Trustee with a copy of its quarterly
report filed with the Commission for the applicable quarterly period in accordance with clause (a)
of this Section 3.02, the Company shall furnish to the Trustee within 55 calendar days after the
close of the first three quarterly periods of each of the Company’s fiscal years, unaudited
consolidated financial statements for the Company and its Subsidiaries, including a consolidated
balance sheet as of the end of such period, related statement of consolidated income and statement
of cash flows, for the period from the beginning of such fiscal year to the end of such quarter
(or, if the Company is not required to file reports or other information and
documents with the Commission pursuant to Section 13 or Section 15(d) of the Exchange Act, such
other statements that would have been included in quarterly reports filed with the Commission if
the Company were subject to the reporting requirements of Section 13 or Section 15(d) of the
Exchange Act).

     (d) The Company covenants and agrees to provide to the Trustee such reports, information and
documents, if any, as required by TIA §314(a).

     (e) Delivery of such reports, information and documents to the Trustee is for informational
purposes only and the Trustee’s receipt of such shall not constitute constructive notice of any
information contained therein or determinable from information contained therein, including the
Company’s compliance with any of its covenants hereunder (as to which the Trustee is entitled to
rely exclusively on Officers’ Certificates).

     Section 3.03 . Future Subsidiary Guarantors. After the Issue Date, the Company will cause
each Wholly-Owned Subsidiary that is not at such time a Subsidiary Guarantor to execute and deliver
to the Trustee a supplemental indenture substantially in the form of Exhibit B pursuant to which
such Subsidiary will become a Subsidiary Guarantor and fully and unconditionally Guarantee, jointly
and severally with the other Subsidiary Guarantors, the Guaranteed Obligations, as provided under
Article 10.

     Section 3.04 . Maintenance of Office or Agency. The Company will maintain an office or agency
where the Securities may be presented or surrendered for payment, where, if applicable, the
Securities may be surrendered for registration of transfer or exchange and where notices and
demands to or upon the Company in respect of the Securities and this Indenture may be served. The
Company will give prompt written notice to the Trustee of any change in the location of any such
office or agency. If at any time the Company shall fail to maintain any such required office or
agency or shall fail to furnish the Trustee with the address thereof, such presentations,

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surrenders, notices and demands may be made or served at the Trustee, and the Company hereby
appoints the Trustee as its agent to receive all such presentations, surrenders, notices and
demands.

     The Company may also from time to time designate one or more other offices or agencies where
the Securities may be presented or surrendered for any or all such purposes and may from time to
time rescind any such designation. The Company will give prompt written notice to the Trustee of
any such designation or rescission and any change in the location of any such other office or
agency.

     Section 3.05 . Corporate Existence. Except as otherwise provided in Article 4, the Company will
do or cause to be done all things necessary to preserve and keep in full force and effect (i) its
corporate existence and (ii) the
material rights (charter and statutory), licenses and franchises of the Company, except, in the
case of clause (ii), to the extent the Board of Directors otherwise reasonably determines it no
longer desirable.

     Section 3.06 . Payment of Taxes and Other Claims. The Company will pay or discharge or cause to
be paid or discharged, before the same shall become delinquent, (i) all material taxes, assessments
and governmental charges levied or imposed upon the Company or any Subsidiary or upon the income,
profits or property of the Company or any Subsidiary and (ii) all lawful claims for labor,
materials and supplies, which, if unpaid, might by law become a material liability or lien upon the
property of the Company or any Subsidiary; provided, however, that the Company shall not be
required to pay or discharge or cause to be paid or discharged any such tax, assessment, charge or
claim whose amount, applicability or validity is being contested in good faith by appropriate
proceedings and for which appropriate reserves, if necessary (in the good faith judgment of
management of the Company), are being maintained in accordance with GAAP or where the failure to
effect such payment will not be disadvantageous to the Holders.

     Section 3.07 . Compliance Certificate. The Company shall deliver to the Trustee within 120
calendar days after the end of each fiscal year of the Company a certificate of the principal
executive officer, principal financial officer or principal accounting officer of the Company,
stating whether or not, to the knowledge of such officer, any Default or Event of Default occurred
during such period and if so, describing each Default or Event of Default, its status and the
action the Company is taking or proposes to take with respect thereto. The Company also shall
comply with TIA § 314(a)(4).

     Section 3.08 . Further Instruments and Acts. Upon request of the Trustee, the Company will
execute and deliver such further instruments and do such further acts as may be reasonably
necessary or proper to carry out more effectively the purpose of this Indenture.

     Section 3.09 . Statement by Officers as to Default. The Company shall deliver to the Trustee, as
soon as possible and in any event within 30 calendar days after the Company becomes aware of the
occurrence of any Event of Default or Default, an Officers’ Certificate setting forth the details
of such Event of Default or Default, its status and the action which the Company proposes to take
with respect thereto.

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     Section 3.10 . Stay, Extension and Usury Laws. The Company covenants (to the extent that it may
lawfully do so) that it shall not at any time insist upon, plead, or in any manner whatsoever claim
or take benefit or advantage of, any stay, extension or usury law or other law which would prohibit
or forgive the Company from paying all or any portion of the principal of or interest on the
Securities as contemplated herein,
wherever enacted, now or at any time the Company (to the extent it may lawfully do so) hereby
expressly waives all benefit or advantage of any such law, and covenants that it will not, by
resort to any such law, hinder, delay or impede the execution of any power herein granted to the
Trustee, but will suffer and permit the execution of every such power as though no such law had
been enacted.

ARTICLE 4

Successor Company

     Section 4.01 . Consolidation, Merger and Sale of Assets of the Company. The Company shall not
consolidate with or merge with or into, or convey, transfer, sell, lease or dispose of all or
substantially all its assets to, another Person (if the Company is not the resulting, surviving or
transferee Person), unless:

     (a) the resulting, surviving or transferee Person (the “Successor Company”) is a corporation
or limited liability company organized and existing under the laws of the United States of America,
any State thereof or the District of Columbia and the Successor Company expressly assumes by
supplemental indenture, executed and delivered to the Trustee, in form satisfactory to the Trustee,
all the obligations of the Company under the Securities and this Indenture;

     (b) immediately after giving effect to such transaction, no Default or Event of Default shall
have occurred and be continuing under this Indenture;

     (c) if as a result of such transaction, the Securities become convertible into common stock or
other securities issued by another Person, such other Person fully and unconditionally guarantees
by supplemental indenture all obligations of the Company or such Successor Company under the
Securities and this Indenture; and

     (d) the Company shall have delivered to the Trustee an Officers’ Certificate and an Opinion of
Counsel, stating that such consolidation, merger, conveyance, transfer, sale, lease or disposition
complies with this Indenture.

     For purposes of this Section 4.01, the conveyance, transfer, sale, lease or disposition of all
or substantially all of the properties and assets of one or more Subsidiaries of the Company, which
properties and assets, if held by the Company instead of such Subsidiaries, would constitute all or
substantially all of the properties and assets of the Company on a consolidated basis, shall be
deemed to be the transfer of all or substantially all of the properties and assets of the Company.

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     The Successor Company will succeed to, and be substituted for, and may exercise every right
and power of, the Company under the Securities and this Indenture with the same effect as if such
Successor Company had been named as the Company in the Indenture. Upon such
substitution, except in the case of a lease, the Company will be released from the obligations
under the Securities.

     Section 4.02 . Consolidation, Merger and Sale of Assets of the Subsidiary Guarantors. Each
Subsidiary Guarantor shall not consolidate with or merge with or into, or convey, transfer, sell,
lease or dispose of all or substantially all its assets to, another Person (if such Subsidiary
Guarantor is not the resulting, surviving or transferee Person), unless:

     (a) the Successor Company is a corporation or limited liability company organized and existing
under the laws of the United States of America, any State thereof or the District of Columbia and
the Successor Company expressly assumes by supplemental indenture, executed and delivered to the
Trustee, in form satisfactory to the Trustee, all the obligations of such Subsidiary Guarantor
under the Subsidiary Guarantee and this Indenture;

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

     (c) the Subsidiary Guarantor shall have delivered to the Trustee an Officers’ Certificate and
an Opinion of Counsel, each stating that such consolidation, merger, conveyance, transfer, sale,
lease or disposition complies with this Indenture.

     The Successor Company will succeed to, and be substituted for, and may exercise every right
and power of, such Subsidiary Guarantor under such Subsidiary Guarantee and this Indenture with the
same effect as if such Successor Company had been named as a Subsidiary Guarantor in the Indenture.
Upon such substitution, except in the case of a lease, the Subsidiary Guarantor will be released
from the obligations under the Subsidiary Guarantee.

ARTICLE 5

Redemption of Securities

     Section 5.01 . Optional Redemption. Prior to May 6, 2012, the Securities shall not be redeemable.
On or after May 6, 2012, the Securities may be redeemed, as a whole or from time to time in part,
subject to the conditions set forth herein, at a price (the “Redemption Price”) equal to 100% of
the principal amount of Securities to be redeemed, plus accrued and unpaid interest to but
excluding the Redemption Date; provided that if the Redemption Date occurs after a Regular Record
Date for the payment of interest and on or prior to the related interest payment date, the
Redemption Price for any such Securities to be redeemed shall be 100% of the principal amount of
such Securities and accrued and unpaid interest shall be paid to the Holder on such Regular Record
Date.

     Section 5.02 . Election to Redeem; Notice to Trustee
.. In case of any redemption at the election of the Company, the Company shall, on or prior to the
date that is 15 calendar days prior

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to the date on which notice is given to the Holders (unless a
shorter notice shall be satisfactory to the Trustee), notify the Trustee of such Redemption Date
and of the principal amount of Securities to be redeemed and shall deliver to the Trustee such
documentation and records as shall enable the Trustee to select the Securities to be redeemed
pursuant to Section 5.03. Any such notice may be cancelled at any time prior to notice of such
redemption being mailed to any Holder and shall thereby be void and of no effect.

     Section 5.03 . Selection by Trustee of Securities to Be Redeemed. If less than all the Securities
are to be redeemed at any time pursuant to an optional redemption, the particular Securities to be
redeemed shall be selected by the Trustee, from the outstanding Securities not previously called
for redemption, by lot or on a pro rata basis among the classes of Securities or by such other
method as the Trustee shall deem fair and appropriate (and in such manner as is not prohibited by
applicable legal requirements) and which may provide for the selection for redemption of portions
of the principal of the Securities; provided, however, that no such partial redemption shall reduce
the portion of the principal amount of a Security not redeemed to less than $1,000.

     The Trustee shall promptly notify the Company in writing of the Securities selected for
redemption and, in the case of any Securities selected for partial redemption, the principal amount
thereof to be redeemed.

     For all purposes of this Indenture, unless the context otherwise requires, all provisions
relating to redemption of Securities shall relate, in the case of any Security redeemed or to be
redeemed only in part, to the portion of the principal amount of such Security which has been or is
to be redeemed.

     If any Securities selected for partial redemption are thereafter surrendered for conversion in
part before termination of the conversion right with respect to the portion of the Securities so
selected, the converted portion of such Securities shall be deemed (so far as may be), solely for
purposes of determining the aggregate principal amount of Securities to be redeemed by the Company,
to be the portion selected for redemption. Securities which have been converted during a selection
of Securities to be redeemed may be treated by the Trustee as outstanding for the purpose of such
selection. Nothing in this Section 5.03 shall affect the right of any Holder to convert any
Securities pursuant to Article 12 before the termination of the conversion right with respect
thereto.

     Section 5.04 . Notice of Redemption. Notice of redemption shall be given in the manner provided
for in Section 13.02 not less than 30 nor more than 60 calendar days prior to the Redemption Date,
to each Holder of Securities to be redeemed. The Trustee shall give notice of redemption in the
Company’s name and at the Company’s expense; provided, however, that the Company shall deliver to
the Trustee an
Officers’ Certificate requesting that the Trustee give such notice at the Company’s expense and
setting forth the information to be stated in such notice as provided in the following items.

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     All notices of redemption shall state:

     (a) the Redemption Date;

     (b) the Redemption Price;

     (c) the then current Conversion Rate for conversion of Securities, and provide a statement
that the Securities called for redemption may be converted at any time prior to 5:00 p.m., New York
City time, on the Business Day immediately preceding the Redemption Date, and that Holders who wish
to convert Securities must comply with the procedures in Section 12.01 and paragraph 5 of the
Securities;

     (d) if less than all outstanding Securities are to be redeemed, the identification of the
particular Securities (or portion thereof) to be redeemed, as well as the aggregate principal
amount of Securities to be redeemed and the aggregate principal amount of Securities to be
outstanding after such partial redemption;

     (e) in case any Security is to be redeemed in part only, the notice which relates to such
Security shall state that on and after the Redemption Date, upon surrender of such Security, the
Holder will receive, without charge, a new Security or Securities of authorized denominations for
the principal amount thereof remaining unredeemed;

     (f) that on the Redemption Date the Redemption Price will become due and payable upon each
such Security, or the portion thereof, to be redeemed, and, unless the Company defaults in making
the redemption payment, that interest on Securities called for redemption (or the portion thereof)
will cease to accrue on and after said date;

     (g) the place or places where such Securities are to be surrendered for payment of the
Redemption Price;

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

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

     (j) the CUSIP or ISIN number, and that no representation is made as to the accuracy or
correctness of the CUSIP or ISIN number, if any, listed in such notice or printed on the
Securities; and

     (k) the paragraph of the Securities pursuant to which the Securities are to be redeemed.

     Section 5.05 . Deposit of Redemption Price
.. Prior to 11:00 a.m., New York City time, on any Redemption Date, the Company shall deposit with
the Trustee or with a Paying Agent (or, if the Company is acting as its own Paying Agent, segregate
and hold in trust as provided in Section 2.06) an amount of money sufficient to pay the Redemption
Price (if such Redemption Price includes accrued and unpaid interest) or Redemption Price and
accrued and unpaid interest

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(if such Redemption Price does not include accrued and unpaid interest)
of all the Securities which are to be redeemed on that date other than Securities or portions of
Securities called for redemption that are beneficially owned by the Company and have been delivered
by the Company to the Trustee for cancellation.

     Section 5.06 . Securities Payable on Redemption Date. Notice of redemption having been given as
aforesaid, the Securities so to be redeemed shall, on the Redemption Date, become due and payable
at the Redemption Price, and from and after such date (unless the Company shall default in the
payment of the Redemption Price or accrued and unpaid interest) such Securities shall cease to bear
interest. Upon surrender of any such Security for redemption in accordance with said notice, such
Security shall be paid by the Company at the Redemption Price.

     If any Security called for redemption shall not be so paid upon surrender thereof for
redemption, the principal shall, until paid, bear interest from the Redemption Date at the rate
borne by the Securities plus 1%.

     Section 5.07 . Securities Redeemed in Part. Any Security which is to be redeemed only in part
(pursuant to the provisions of this Article 5) shall be surrendered at the office or agency of the
Company maintained for such purpose pursuant to Section 3.04 (with, if the Company or the Trustee
so requires, due endorsement by, or a written instrument of transfer in form satisfactory to the
Company and the Trustee duly executed by, the Holder thereof or such Holder’s attorney duly
authorized in writing), and the Company shall execute, and the Trustee shall authenticate and make
available for delivery to the Holder of such Security at the expense of the Company, a new Security
or Securities, of any authorized denomination as requested by such Holder, in an aggregate
principal amount equal to and in exchange for the unredeemed portion of the principal of the
Security so surrendered; provided that each such new Security will be in a principal amount of
$1,000 or multiple thereof.

ARTICLE 6

Defaults and Remedies

     Section 6.01 . Events of Default. Each of the following is an “Event of Default”:

     (a) default in any payment of interest on any Security when the same becomes due and payable,
and such default continues for a period of 30 calendar days;

     (b) default in the payment of the principal of any Security when the same becomes due and
payable at its Stated Maturity, upon optional redemption, upon required purchase, upon declaration
or otherwise;

     (c) failure by the Company to comply with its obligation to convert the Securities in
accordance with this Indenture, upon exercise of a Holder’s conversion right and such failure
continues for a period of five calendar days;

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     (d) failure by the Company to give a Company Notice in connection with a Fundamental Change to
Holders or notice to Holders required pursuant to Section 12.04(b), in each case on a timely basis
as required under this Indenture;

     (e) failure by the Company to comply with any of its obligations under Article 4;

     (f) failure by the Company to comply with, or a breach by the Company of, any other covenant
or agreement in this Indenture or under the Securities (other than those referred to in Section
6.01(a) through (e)) and such default continues for 60 calendar days after the notice specified
below;

     (g) failure by the Company or any of its Subsidiaries to pay any indebtedness for borrowed
money within any applicable grace period after final maturity or the acceleration of any such
indebtedness by the holders thereof because of a default if the total amount of such indebtedness
unpaid or accelerated exceeds $20,000,000 in the aggregate, and such failure continues for 10
calendar days after the notice specified below;

     (h) a Subsidiary Guarantee shall be held in any judicial proceeding to be unenforceable or
invalid or a Subsidiary Guarantor denies or disaffirms its obligations under its Subsidiary
Guarantee;

     (i) there has been entered in a court of competent jurisdiction a final judgment for the
payment of $20,000,000 or more rendered against the Company or any Subsidiary, which judgment is
not discharged or stayed within 60 calendar days after (i) the date on which the right to appeal
thereof has expired if no such appeal has commenced, or (ii) the date on which all rights to appeal
have been extinguished;

     (j) the Company or any Significant Subsidiary pursuant to or within the meaning of any
Bankruptcy Law:

     (i) commences a voluntary case or proceeding;

     (ii) consents to the entry of judgment, decree or order for relief against it in an
involuntary case or proceeding;

     (iii) consents to the appointment of a Custodian of it or for all or substantially
all of its property;

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

     (v) consents to or acquiesces in the institution of a bankruptcy or an insolvency
proceeding against it;

     (vi) takes any corporate action to authorize or effect any of the foregoing; or

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     (vii) takes any comparable action under any foreign laws relating to insolvency; or

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

     (i) is for relief against the Company or any Significant Subsidiary in an
involuntary case;

     (ii) appoints a Custodian of the Company of any Significant Subsidiary for all or
substantially all of the Company’s or such Significant Subsidiary’s property; or

     (iii) orders the winding up or liquidation of the Company or Significant Subsidiary;

and, in each case, the order or decree or relief remains unstayed and in effect for 90
calendar days.

     The foregoing will constitute Events of Default whatever the reason for any such Event of
Default and whether it is voluntary or involuntary or is effected by operation of law or pursuant
to any judgment, decree or order of any court or any order, rule or regulation of any
administrative or governmental body.

     Notwithstanding the foregoing, a Default under clause (f) or (g) of this Section 6.01 will not
constitute an Event of Default until the Trustee or the Holders of 25% or more in principal amount
of the outstanding Securities notify the Company of the Default in writing and the Company does not
cure such Default within the time specified in clause (f) or (g) of this Section 6.01, as
applicable, after receipt of such notice.

     Section 6.02 . Acceleration. (a) If an Event of Default (other than an Event of Default specified
in Section 6.01(j) or 6.01(k) above) occurs and is continuing, the Trustee by notice to the
Company, or the Holders of at least 25% in outstanding principal amount of the outstanding
Securities by notice to the Company and the Trustee, may, and the Trustee at the request of such
Holders shall, declare the principal of and accrued and unpaid interest, if any, on all the
Securities to be due and payable. Upon such a declaration, such principal and accrued and unpaid
interest, if any, shall be due and payable immediately. If an Event of Default specified in
Section 6.01(j) or 6.01(k) above occurs and is continuing, the principal of and accrued and unpaid
interest, if any, on all the Securities
outstanding shall be immediately due and payable with no further action by the Trustee or the
Holders.

     (b) Notwithstanding anything to the contrary herein or in the Securities to the contrary, the
sole remedy for an Event of Default relating to the failure to comply with Section 3.02 of this
Indenture or TIA § 314(a)(1), shall for the 365 calendar days after the occurrence of such an Event
of Default consist exclusively of the right to receive additional interest on the Securities at an
annual rate equal to 0.50% of the principal amount of the Securities. Any such

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additional interest
will be payable in the same manner and on the same interest payment dates as the stated interest
payable on the Securities. The additional interest will accrue on all outstanding Securities from
and including the date on which an Event of Default relating to a failure to comply with Section
3.02 of this Indenture or TIA § 314(a)(1) first occurs to, but not including, the 365th day
thereafter (or such earlier date on which such Event of Default shall have been cured or waived).
On such 365th day (or earlier, if such Event of Default is cured or waived prior to such 365th
day), such additional interest shall cease to accrue, and the Securities shall be subject to
acceleration under Section 6.02(a) of this Indenture if the Event of Default is continuing. The
provisions described in this Section 6.02(b) shall not affect the rights of Holders of Securities
in the event of the occurrence of any other Event of Default.

     Section 6.03 . Other Remedies. If an Event of Default occurs and is continuing, the Trustee may
pursue any available remedy to collect the payment of principal of or interest on the Securities or
to enforce the performance of any provision of the Securities or this Indenture.

     The Trustee may maintain a proceeding even if it does not possess any of the Securities or
does not produce any of them in the proceeding. A delay or omission by the Trustee or any Holder
in exercising any right or remedy accruing upon an Event of Default shall not impair the right or
remedy or constitute a waiver of or acquiescence in the Event of Default. No remedy is exclusive
of any other remedy. All available remedies are cumulative.

     Section 6.04 . Waiver of Past Defaults. The Holders of a majority in principal amount of the
outstanding Securities by notice to the Trustee may:

          (a) waive, by their consent (including, without limitation, consents obtained in connection
with a purchase of, or tender offer or exchange offer for, Securities), an existing Default or
Event of Default and its consequences except (i) a Default or Event of Default in the payment of
the principal of or interest on a Security (including payments pursuant to the optional redemption
or required repurchase provisions on such Security, if any) or (ii) a Default or Event of Default
in respect of a provision that under Section 9.02 cannot be amended without the consent of each
Holder affected; and

          (b) rescind any such acceleration with respect to the Securities and its consequences if (i)
rescission would not conflict with any judgment or decree of a court of competent jurisdiction and
(ii) all existing Events of Default, other than the nonpayment of the principal of and interest on
the Securities (including payments pursuant to the optional redemption or required repurchase
provisions on such Securities, if any) that have become due solely by such declaration of
acceleration, have been cured or waived.

When a Default or Event of Default is waived, it is deemed cured, but no such waiver shall extend
to any subsequent or other Default or Event of Default or impair any consequent right.

     Section 6.05 . Control by Majority. The Holders of a majority in principal amount of the
outstanding Securities may direct the time, method and place of conducting any proceeding for any
remedy available to the Trustee or of exercising any trust or power conferred on the Trustee.

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However, the Trustee may refuse to follow any direction that conflicts with law or this Indenture
or, subject to Sections 7.01 and 7.02, that the Trustee determines is unduly prejudicial to the
rights of other Holders or would involve the Trustee in personal liability; provided, however, that
the Trustee may take any other action deemed proper by the Trustee that is not inconsistent with
such direction.

     Section 6.06 . Limitation on Suits. Subject to Section 6.07, a Holder may not pursue any remedy
with respect to this Indenture or the Securities unless:

     (a) such Holder has previously given to the Trustee written notice stating that an Event of
Default is continuing;

     (b) Holders of at least 25% in principal amount of the outstanding Securities have requested
that the Trustee pursue the remedy;

     (c) such Holders have offered to the Trustee security or indemnity reasonably satisfactory to
it in its sole discretion against any loss, liability or expense to be incurred in compliance with
such request;

     (d) the Trustee has not complied with such request within 60 calendar days after receipt of
the request and the offer of security or indemnity; and

     (e) the Holders of a majority in principal amount of the outstanding Securities have not given
the Trustee a direction that, in the opinion of the Trustee, is inconsistent with such request
within such 60-calendar-day period.

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

     Section 6.07 . Rights of Holders to Receive Payment
.. Notwithstanding any other provision of this Indenture (including, without limitation, Section
6.06), the right of any Holder to receive payment of principal of or interest on the Securities
(including payments pursuant to the optional redemption or required repurchase provisions of such
Securities, if any) held by such Holder, on or after the respective due dates expressed in the
Securities, or to bring suit for the enforcement of any such payment on or after such respective
dates, shall not be impaired or affected without the consent of such Holder.

     Section 6.08 . Collection Suit by Trustee. If an Event of Default specified in clauses (a) or (b)
of Section 6.01 occurs and is continuing, the Trustee may recover judgment in its own name and as
trustee of an express trust against the Company for the whole amount then due and owing (together
with interest on any unpaid interest to the extent lawful) and the amounts provided for in Section
7.07.

     Section 6.09 . Trustee May File Proofs of Claim. The Trustee may file such proofs of claim and
other papers or documents as may be necessary or advisable in order to have the claims of the
Trustee (including any claim for the reasonable compensation, expenses,

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disbursements and advances
of the Trustee, its agents and counsel) and the Holders allowed in any judicial proceedings
relative to the Company, its Subsidiaries or its or their respective creditors or properties and,
unless prohibited by law or applicable regulations, may be entitled and empowered to participate as
a member of any official committee of creditors appointed in such matter, and may vote on behalf of
the Holders in any election of a trustee in bankruptcy or other Person performing similar
functions, and any Custodian in any such judicial proceeding is hereby authorized by each Holder to
make payments to the Trustee and, in the event that the Trustee shall consent to the making of such
payments directly to the Holders, to pay to the Trustee any amount due for the reasonable
compensation, expenses, disbursements and advances of the Trustee, its agents and its counsel, and
any other amounts due to the Trustee under Section 7.07.

     Section 6.10 . Priorities. If the Trustee collects any money or property pursuant to this Article
6, it shall pay out the money or property in the following order:

     FIRST: to the Trustee for amounts due under Section 7.07;

     SECOND: to Holders for amounts due and unpaid on the Securities for principal
(including payments pursuant to the optional redemption or required repurchase provisions of
the Securities, if any) and interest, ratably, without preference or priority of any kind,
according to the amounts due and payable on the Securities for principal (including payments
pursuant to the optional redemption or required repurchase provisions of the Securities, if
any) and interest, respectively; and

     THIRD: to the Company.

     The Trustee may fix a record date and payment date for any payment to Holders pursuant to this
Section 6.10. At least 15 calendar days before such record date, the Company shall mail to each
Holder and the Trustee a notice that states the record date, the payment date and amount to be
paid.

     Section 6.11 . Restoration of Rights and Remedies. If the Trustee or any Holder has instituted a
proceeding to enforce any right or remedy under this Indenture and the proceeding has been
discontinued or abandoned for any reason, or has been determined adversely to the Trustee or to the
Holder, then, subject to any determination in the proceeding, the Company, the Trustee, any
Subsidiary Guarantors and the Holders will be restored severally and respectively to their former
positions hereunder and thereafter all rights and remedies of the Company, the Trustee, any
Subsidiary Guarantors and the Holders will continue as though no such proceeding had been
instituted.

     Section 6.12 . Undertaking of Costs. In any suit for the enforcement of any right or remedy under
this Indenture or in any suit against the Trustee for any action taken or omitted by it as Trustee,
a court in its discretion may require the filing by any party litigant in the suit of an
undertaking to pay the costs of the suit, and the court in its discretion may assess reasonable
costs, including reasonable attorneys’ fees and expenses, against any party litigant in the suit,

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having due regard to the merits and good faith of the claims or defenses made by the party
litigant. This Section 6.12 does not apply to a suit by the Trustee, a suit by the Company, a suit
by a Holder pursuant to Section 6.07 or a suit by Holders of more than 10% in outstanding principal
amount of the Securities.

ARTICLE 7

Trustee

     Section 7.01 . Duties of Trustee. (a) If an Event of Default has occurred and is continuing, the
Trustee shall exercise the rights and powers vested in it by this Indenture and use the same degree
of care and skill in its exercise as a prudent Person would exercise or use under the circumstances
in the conduct of such Person’s own affairs; provided that if an Event of Default occurs and is
continuing, the Trustee will be under no obligation to exercise any of the rights or powers under
this Indenture at the request or direction of any of the Holders unless such Holders have offered
to the Trustee reasonable indemnity or security against loss, liability or expense that might be
incurred in compliance with such request or direction.

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

     (i) the Trustee undertakes to perform such duties and only such duties as are
specifically set forth in this Indenture and no implied covenants or obligations shall be
read into this Indenture against the Trustee; and

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

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

     (i) this paragraph does not limit the effect of paragraph (b) of this Section 7.01;

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

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     (iii) the Trustee shall not be liable with respect to any action it takes or omits to
take in good faith in accordance with a direction received by it pursuant to Section 6.05.

     (d) Every provision of this Indenture that in any way relates to the Trustee is subject to
paragraphs (a), (b) and (c) of this Section 7.01.

     (e) The Trustee shall not be liable for interest on any money received by it except as the
Trustee may agree in writing with the Company.

     (f) Money held in trust by the Trustee need not be segregated from other funds except to the
extent required by law.

     (g) No provision of this Indenture shall require the Trustee to expend or risk its own funds
or otherwise incur financial liability in the performance of any of its duties hereunder or in the
exercise of any of its rights or powers, if it shall have reasonable grounds to believe that
repayment of such funds or adequate indemnity against such risk or liability is not reasonably
assured to it.

     (h) Every provision of this Indenture relating to the conduct or affecting the liability of or
affording protection to the Trustee shall be subject to the provisions of this Section 7.01 and to
the provisions of the TIA.

     (i) Unless otherwise specifically provided in this Indenture, any demand, request, direction
or notice from the Company shall be sufficient if signed by an Officer of the Company.

     Section 7.02 . Rights of Trustee. Subject to Section 7.01:

     (a) The Trustee may conclusively rely on any document (whether in its original or facsimile
form) reasonably believed by it to be genuine and to have been signed or presented by the proper
Person. The Trustee need not investigate any fact or matter stated in the document. The Trustee
shall receive and retain financial reports and statements of the Company as provided herein, but
shall have no duty to review or analyze such reports or statements to determine compliance under
covenants or other obligations of the Company.

     (b) Before the Trustee acts or refrains from acting, it may require an Officers’ Certificate
and/or an Opinion of Counsel. The Trustee shall not be liable for any action it takes or omits to
take in good faith in reliance on an Officers’ Certificate or Opinion of Counsel.

     (c) The Trustee may act through its attorneys and agents and shall not be responsible for the
misconduct or negligence of any agent appointed with due care.

     (d) The Trustee shall not be liable for any action it takes or omits to take in good faith
which it believes to be authorized or within its rights or powers, unless the Trustee’s conduct
constitutes willful misconduct or negligence.

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     (e) The Trustee may consult with counsel of its selection, and the advice or opinion of
counsel with respect to legal matters relating to this Indenture and the Securities shall be full
and complete authorization and protection from liability in respect to any action taken, omitted or
suffered by it hereunder in good faith and in accordance with the advice or opinion of such
counsel.

     (f) The Trustee shall not be responsible or liable for special, indirect, or consequential
loss or damage of any kind whatsoever (including, but not limited to, loss of profit) resulting
from actions taken in good faith and which the Trustee believes to be authorized or within its
rights or powers, unless the Trustee’s conduct constitutes willful misconduct or negligence.

     (g) The rights, privileges, protections, immunities and benefits given to the Trustee,
including, without limitation, its right to be indemnified, are extended to, and shall be
enforceable by, the Trustee in each of its capacities hereunder, and each agent, Securities
Custodian and other Person employed to act hereunder.

     (h) The Trustee may request that the Company deliver a certificate setting forth the names of
individuals and/or titles of Officers authorized at such time to take specified actions pursuant to
this Indenture.

     Section 7.03 . Individual Rights of Trustee. The Trustee in its individual or any other capacity
may become the owner or pledgee of Securities and may otherwise deal with the Company or its
Affiliates with the same rights it
would have if it were not Trustee. Any Paying Agent, Registrar, co-registrar or co-paying agent
may do the same with like rights. However, the Trustee must comply with Sections 7.10 and 7.11.
In addition, the Trustee shall be permitted to engage in transactions with the Company; provided,
however, that if the Trustee acquires any conflicting interest the Trustee must (i) eliminate such
conflict within 90 calendar days of acquiring such conflicting interest, (ii) apply to the
Commission for permission to continue acting as Trustee or (iii) resign.

     Section 7.04 . Trustee’s Disclaimer. The Trustee shall not be responsible for and makes no
representation as to the validity or adequacy of this Indenture or the Securities, shall not be
accountable for the Company’s use of the proceeds from the Securities, shall not be responsible for
the use or application of any money received by any Paying Agent other than the Trustee and shall
not be responsible for any statement of the Company in this Indenture or in any document issued in
connection with the sale of the Securities or in the Securities other than the Trustee’s
certificate of authentication.

     Section 7.05 . Notice of Defaults. If a Default or Event of Default occurs and is continuing and
if a Trust Officer of the Trustee has actual knowledge thereof, the Trustee shall mail by first
class mail to each Holder at the address set forth in the Securities Register notice of the Default
or Event of Default within 90 calendar days after it occurs. Except in the case of a Default or
Event of Default in payment of principal of or interest on any Security (including payments
pursuant to the optional redemption or required repurchase provisions of such Security, if any),
the Trustee may withhold the notice if and so long as its board of directors, a

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committee of its
board of directors or a committee of its Trust Officers in good faith determines that withholding
the notice is in the interests of Holders.

     Section 7.06 . Reports by Trustee to Holders. As promptly as practicable after each May 15
beginning with the May 15 following the date of this Indenture, the Trustee shall mail to each
Holder a brief report dated as of such May 15 that complies with TIA § 313(a), if required by such
TIA § 313(a). The Trustee also shall comply with TIA § 313(b). The Trustee shall also transmit by
mail all reports required by TIA § 313(c).

     Section 7.07 . Compensation and Indemnity. The Company and the Subsidiary Guarantors shall be
jointly and severally liable for paying the Trustee from time to time such compensation for its
acceptance of this Indenture and services hereunder as the Company and the Trustee shall from time
to time agree in writing. The Trustee’s compensation shall not be limited by any law on
compensation of a trustee of an express trust. In addition to the compensation the Company and the
Subsidiary Guarantors shall be jointly and severally liable for reimbursing the Trustee upon
request for all reasonable out-of-pocket expenses incurred or made by it. Such expenses shall
include the reasonable compensation and out-of-pocket expenses, disbursements and advances of the
Trustee’s agents, counsel, accountants and experts. The Company and each Subsidiary Guarantor,
jointly and
severally, shall indemnify the Trustee against any and all loss, liability, damages, claims or
expense (including reasonable attorneys’ fees and expenses) incurred by it without negligence or
bad faith on its part in connection with the administration of this trust and the performance of
its duties hereunder, including the costs and expenses of enforcing this Indenture (including this
Section 7.07) and of defending itself against any claims (whether asserted by any Holder, the
Company, any Subsidiary Guarantor or otherwise). The Trustee shall notify the Company promptly of
any claim for which it may seek indemnity. Failure by the Trustee to so notify the Company shall
not relieve the Company or any Subsidiary Guarantors of its obligations hereunder. The Company
shall defend the claim and the Trustee shall provide reasonable cooperation at the Company’s
expense in the defense. The Trustee may have separate counsel and the Company and the Subsidiary
Guarantors, as applicable, shall pay the fees and expenses of such counsel, provided that the
Company shall not be required to pay such fees and expenses if it assumes the Trustee’s defense,
and, in the reasonable judgment of outside counsel to the Trustee, there is no conflict of interest
between the Company and the Subsidiary Guarantors, as applicable, and the Trustee in connection
with such defense. The Company and the Subsidiary Guarantors need not reimburse any expense or
indemnify against any loss, liability or expense which is finally determined by a court of
competent jurisdiction to have been incurred by the Trustee through the Trustee’s own willful
misconduct, negligence or bad faith.

     To secure the Company’s and the Subsidiary Guarantors’ payment obligations in this Section
7.07, the Trustee shall have a lien prior to the Securities on all money or property held or
collected by the Trustee other than money or property held in trust to pay principal of and
interest on particular Securities. Such lien shall survive the satisfaction and discharge of this
Indenture. The Trustee’s right to receive payment of any amounts due under this Section 7.07 shall
not be subordinate to any other unsecured liability or debt of the Company or any Subsidiary
Guarantors.

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     The Company’s and the Subsidiary Guarantors’ payment obligations pursuant to this Section 7.07
shall survive the discharge of this Indenture. When the Trustee incurs expenses after the
occurrence of a Default specified in Sections 6.01(j) and 6.01(k) with respect to the Company, the
expenses are intended to constitute expenses of administration under any Bankruptcy Law.

     Section 7.08 . Replacement of Trustee. The Trustee may resign at any time by so notifying the
Company. The Holders of a majority in principal amount of the Securities may remove the Trustee by
so notifying the Trustee and may appoint a successor Trustee. The Company shall remove the Trustee
if:

     (a) the Trustee fails to comply with Section 7.10;

     (b) the Trustee is adjudged bankrupt or insolvent;

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

     (d) the Trustee otherwise becomes incapable of acting.

     If the Trustee resigns or is removed by the Company or by the Holders of a majority in
principal amount of the outstanding Securities and such Holders do not reasonably promptly appoint
a successor Trustee, or if a vacancy exists in the office of the Trustee for any reason (the
Trustee in such event being referred to herein as the retiring Trustee), the Company shall promptly
appoint a successor Trustee.

     A successor Trustee shall deliver a written acceptance of its appointment to the retiring
Trustee and to the Company. Thereupon the resignation or removal of the retiring Trustee shall
become effective, and the successor Trustee shall have all the rights, powers and duties of the
Trustee under this Indenture. The successor Trustee shall mail a notice of its succession to
Holders. The retiring Trustee shall promptly transfer all property held by it as Trustee to the
successor Trustee, subject to the lien provided for in Section 7.07.

     If a successor Trustee does not take office within 60 calendar days after the retiring Trustee
resigns or is removed, the retiring Trustee or the Holders of at least 10% in principal amount of
the outstanding Securities may petition, at the Company’s expense, any court of competent
jurisdiction for the appointment of a successor Trustee.

     If the Trustee fails to comply with Section 7.10, unless the Trustee’s duty to resign is
stayed as provided in TIA § 310(b), any Holder may petition any court of competent jurisdiction for
the removal of the Trustee and the appointment of a successor Trustee.

     Notwithstanding the replacement of the Trustee pursuant to this Section 7.08, the Company’s
obligations under Section 7.07 shall continue for the benefit of the retiring Trustee.

     Section 7.09 . Successor Trustee by Merger. If the Trustee consolidates with, merges or converts
into, or transfers all or substantially all its corporate trust business or assets to, another

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corporation or banking association, the resulting, surviving or transferee corporation without any
further act shall be the successor Trustee.

     In case at the time such successor or successors by merger, conversion or consolidation to the
Trustee shall succeed to the trusts created by this Indenture, any of the Securities shall have
been authenticated but not delivered, any such successor to the Trustee may adopt the certificate
of authentication of any predecessor trustee, and deliver such Securities so authenticated; and in
case at that time any of the Securities shall not have been authenticated, any successor to the
Trustee may authenticate such Securities either in the name of any predecessor hereunder or in the
name of the successor to the Trustee; provided that the right to adopt the certificate of
authentication of any predecessor Trustee or authenticate Securities in the name of any predecessor
Trustee shall only apply to its successor or successors by merger, consolidation or conversion.

     Section 7.10 . Eligibility; Disqualification
.. The Trustee shall at all times satisfy the requirements of TIA § 310(a). The Trustee shall have
a combined capital and surplus of at least $100 million as set forth in its most recent published
annual report of condition. The Trustee shall comply with TIA § 310(b); provided, however, that
there shall be excluded from the operation of TIA § 310(b)(1) any indenture or indentures under
which other securities or certificates of interest or participation in other securities of the
Company are outstanding if the requirements for such exclusion set forth in TIA § 310(b)(1) are
met.

     Section 7.11 . Preferential Collection of Claims Against Company. The Trustee shall comply with
TIA § 311(a), excluding any creditor relationship listed in TIA § 311(b). A Trustee who has
resigned or been removed shall be subject to TIA § 311(a) to the extent indicated.

ARTICLE 8

Discharge of Indenture

     Section 8.01 . Discharge of Liability on Securities. When:

     (1) the Company shall deliver to the Registrar for cancellation all Securities theretofore
authenticated (other than any Securities which have been destroyed, lost or stolen and in lieu of
or in substitution for which other Securities shall have been authenticated and delivered) and not
theretofore canceled, or

     (2) all the Securities not theretofore canceled or delivered to the Registrar for cancellation
shall have (a) been surrendered for conversion and the Company shall deliver to the Holders cash
and shares of Common Stock, as applicable, sufficient to pay all amounts owing in respect of all
Securities (other than any

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Securities which shall have been mutilated, destroyed, lost or stolen
and in lieu of or in substitution for which other Securities shall have been authenticated and
delivered) not theretofore canceled or delivered to the Registrar for cancellation or (b) become
due and payable on the Stated Maturity, Purchase Date, Fundamental Change Purchase Date or
Redemption Date, as applicable, and the Company shall deposit with the Trustee cash sufficient to
pay all amounts owing in respect of all Securities (other than any Securities which shall have been
mutilated, destroyed, lost or stolen and in lieu of or in substitution for which other Securities
shall have been authenticated and delivered) not theretofore canceled or delivered to the Registrar
for cancellation, including the principal amount and interest accrued and unpaid to such Stated
Maturity, Purchase Date, Fundamental Change Purchase Date or Redemption Date, as the case may be,

and if in either case (1) or (2) the Company shall also pay or cause to be paid all other sums
payable hereunder by the Company, then this Indenture with respect to the Securities shall cease to
be of further effect (except as to (i) remaining rights of registration of transfer, substitution
and exchange and conversion of Securities; (ii) rights hereunder of Holders to receive from the
Trustee payments of the amounts then due, including interest with respect to the Securities and the
other rights, duties and obligations of Holders, as beneficiaries hereof solely with respect to the
amounts, if any, so deposited with the Trustee; and (iii) the rights, obligations and immunities of
the Trustee, Authenticating Agent, Paying Agent, Conversion Agent and Registrar under this
Indenture with respect to the Securities), and the Trustee, on demand of the Company accompanied by
an Officers’ Certificate and an Opinion of Counsel as required by Section 8.03 and at the cost and
expense of the Company, shall execute proper instruments acknowledging satisfaction of and
discharging this Indenture with respect to the Securities; however, the Company hereby agrees to
reimburse the Trustee, Authenticating Agent, Paying Agent, Conversion Agent and Registrar for any
costs or expenses thereafter reasonably and properly incurred by the Trustee, Authenticating Agent,
Paying Agent, Conversion Agent and Registrar and to compensate the Trustee, Authenticating Agent,
Paying Agent, Conversion Agent and Registrar for any services thereafter reasonably and properly
rendered by the Trustee, Authenticating Agent, Paying Agent, Conversion Agent and Registrar in
connection with this Indenture with respect to the Securities.

     Section 8.02 . Reinstatement. If the Trustee or the Paying Agent is unable to apply any money to
the Holders entitled thereto by reason of any order or judgment of any court of governmental
authority enjoining, restraining or otherwise prohibiting such application, the Company’s
obligations under this Indenture with respect to the Securities and the Securities shall be revived
and reinstated as though no deposit had occurred pursuant to Section 8.01 until such time as the
Trustee or the Paying Agent is permitted to apply all such money in accordance with this Indenture
and the Securities to the Holders entitled thereto; provided, however, that if the Company makes
any payment of principal amount of or interest on any Securities following the reinstatement of its
obligations, the Company shall be subrogated to the rights of the Holders of such Securities to
receive such payment from the money held by the Trustee or Paying Agent.

     Section 8.03 . Officers’ Certificate; Opinion of Counsel. Upon any application or demand by the
Company to the Trustee to take any action under Section 8.01, the Company shall furnish to the
Trustee an Officers’ Certificate or Opinion of Counsel stating that all conditions precedent, if
any, provided for in this Indenture relating to the proposed action have been complied with.

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ARTICLE 9

Amendments

     Section 9.01 . Without Consent of Holders. The Company, the Subsidiary Guarantors and the Trustee
may amend this Indenture or the Securities without notice to or consent of any Holder:

     (a) to cure any ambiguity, omission, defect or inconsistency;

     (b) to comply with Article 4 in respect of the assumption by a Successor Company of an
obligation of the Company or a Subsidiary Guarantor, as applicable, under this Indenture;

     (c) to provide for uncertificated Securities in addition to or in place of certificated
Securities; provided, however, that the uncertificated Securities are issued in registered form for
purposes of Section 163(f) of the Code or in a manner such that the uncertificated Securities are
described in Section 163(f)(2)(B) of the Code;

     (d) to add Guarantees with respect to the Securities;

     (e) to secure the Securities;

     (f) to add to the covenants of the Company for the benefit of the Holders or to surrender any
right or power herein conferred upon the Company;

     (g) to make any change that does not materially adversely affect the rights of any Holder; or

     (h) to comply with any requirement of the Commission in connection with the qualification of
this Indenture under the TIA.

     After an amendment under this Section 9.01 becomes effective, the Company shall mail to
Holders a notice briefly describing such amendment. The failure to give such notice to all
Holders, or any defect therein, shall not impair or affect the validity of an amendment under this
Section 9.01.

     Section 9.02 . With Consent of Holders. The Company, the Subsidiary Guarantors and the Trustee
may amend this Indenture or the Securities without notice to any Holder but with the written
consent of the Holders of at least a majority in principal amount of the Securities then
outstanding (including, without limitation, consents obtained in connection with a purchase of, or
tender offer or exchange offer for, Securities) and past Defaults or compliance with the provisions
of this Indenture may be waived with the written consent of the Holders of at least a majority in
principal amount of the Securities then outstanding (including, without limitation, consents
obtained in connection with a purchase of, or tender offer or exchange offer for, Securities).
However, without the consent of each Holder affected (in addition to the majority in principal
amount of the Securities then outstanding (including, without limitation, consents

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obtained in
connection with a purchase of, or tender offer or exchange offer for, Securities), an amendment or
waiver may not:

     (a) reduce the amount of Securities whose Holders must consent to an amendment of this
Indenture or to waive any past Defaults;

     (b) reduce the rate of or extend the stated time for payment of interest on any Security;

     (c) reduce the principal of or extend the Stated Maturity of any Security;

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

     (e) reduce the Redemption Price, the Purchase Price or the Fundamental Change Purchase Price
payable upon the redemption or repurchase of any Security or amend or modify in any manner adverse
to holders of the Securities the Company’s obligation to make such payments, whether through an
amendment to or waiver of a provision in the covenants, definitions or otherwise;

     (f) make any Security payable in money other than that stated in the Security (it being
understood that all references to cash in this Indenture and the Securities are to U.S. legal
tender);

     (g) impair the right of any Holder to receive payment of principal of and interest on such
Holder’s Securities on or after the due dates therefor or to institute suit for the enforcement of
any payment on or with respect to such Holder’s Securities;

     (h) make any change to the amendment provisions which require each Holder’s consent or to the
waiver provisions; or

     (i) terminate any Subsidiary Guarantees with respect to the Securities (unless expressly
permitted under this Indenture).

     It shall not be necessary for the consent of the Holders under this Section 9.02 to approve
the particular form of any proposed amendment or waiver, but it shall be sufficient if such consent
approves the substance thereof. A consent to any amendment or waiver under this Indenture by any
Holder of the Securities given in connection with a tender or exchange of such Holder’s Securities
will not be rendered invalid by such tender or exchange.

     After an amendment under this Section 9.02 becomes effective, the Company shall mail to
Holders a notice briefly describing such amendment. The failure to give such notice to all
Holders, or any defect therein, shall not impair or affect the validity of an amendment under this
Section 9.02.

     Section 9.03 . Compliance with TIA. Every amendment or supplement to this Indenture or the
Securities shall comply with the TIA as then in effect.

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     Section 9.04 . Revocation and Effect of Consents and Waivers. A consent to an amendment or a
waiver by a Holder of a Security shall bind the Holder and every subsequent Holder of that Security
or portion of the Security that evidences the same debt as the consenting Holder’s Security, even
if notation of the consent or waiver is not made on the Security. However, any such Holder or
subsequent Holder may revoke the consent or waiver as to such Holder’s Security or portion of the
Security if the Trustee receives the notice of
revocation before the date the amendment or waiver becomes effective or otherwise in accordance
with any related solicitation documents. After an amendment or waiver becomes effective, it shall
bind every Holder. An amendment or waiver shall become effective upon receipt by the Trustee of
the requisite number of written consents under Section 9.01 or 9.02, as applicable.

     The Company may, but shall not be obligated to, fix a record date for the purpose of
determining the Holders entitled to give their consent or take any other action described above or
required or permitted to be taken pursuant to this Indenture. If a record date is fixed, then
notwithstanding the immediately preceding paragraph, those Persons who were Holders at such record
date (or their duly designated proxies), and only those Persons, shall be entitled to give such
consent or to revoke any consent previously given or to take any such action, whether or not such
Persons continue to be Holders after such record date. No such consent shall become valid or
effective more than 120 Business Days after such record date.

     Section 9.05 . Notation on or Exchange of Securities. If an amendment changes the terms of a
Security, the Trustee may require the Holder of the Security to deliver it to the Trustee. The
Trustee may place an appropriate notation on the Security regarding the changed terms and return it
to the Holder. Alternatively, if the Company or the Trustee so determines, the Company in exchange
for the Security shall issue and the Trustee shall authenticate a new Security that reflects the
changed terms. Failure to make the appropriate notation or to issue a new Security shall not
affect the validity of such amendment.

     Section 9.06 . Trustee to Sign Amendments. The Trustee shall sign any amendment authorized
pursuant to this Article 9 if the amendment does not adversely affect the rights, duties,
liabilities or immunities of the Trustee. If it does, the Trustee may but need not sign it. In
signing such amendment the Trustee shall be entitled to receive and (subject to Sections 7.01 and
7.02) shall be fully protected in relying upon, an Officers’ Certificate and an Opinion of Counsel
stating that such amendment is authorized or permitted by this Indenture and that such amendment is
the legal, valid and binding obligation of the Company and any Subsidiary Guarantors, enforceable
against them in accordance with its terms, subject to customary exceptions, and complies with the
provisions hereof (including Section 9.03).

ARTICLE 10

Subsidiary Guarantees

     Section 10.01 . Subsidiary Guarantees. Subject to the provisions of this Article 10, the
Subsidiary Guarantors hereby fully and unconditionally Guarantee, jointly and severally, on a
senior unsecured basis to each Holder and to the Trustee and its successors and assigns (i) the
full and punctual payment when due, whether at Stated Maturity, by acceleration, by redemption,

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repurchase or otherwise, of all obligations of
the Company under this Indenture (including obligations to the Trustee) and the Securities, whether
for payment of principal of or interest on the Securities and all other monetary obligations of the
Company under this Indenture and the Securities and (ii) the full and punctual performance within
applicable grace periods of all other obligations of the Company whether for fees, expenses,
indemnification or otherwise under this Indenture and the Securities (all the foregoing being
hereinafter collectively called the “Guaranteed Obligations”). Subject to Section 10.02, the
Subsidiary Guarantors further agree that the Guaranteed Obligations may be extended or renewed, in
whole or in part, without notice or further assent from the Subsidiary Guarantors, and that the
Subsidiary Guarantors shall remain bound under this Article 10 notwithstanding any extension or
renewal of any Guaranteed Obligation.

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     To the extent permitted by law, each Subsidiary Guarantor waives presentation to, demand of
payment from and protest to the Company of any of the Guaranteed Obligations and also waives notice
of protest for nonpayment. Each Subsidiary Guarantor waives notice of any Default under the
Securities or the Guaranteed Obligations. The obligations of the Subsidiary Guarantors hereunder
shall not be affected by (i) the failure of any Holder or the Trustee to assert any claim or demand
or to enforce any right or remedy against the Company or any other Person under this Indenture, the
Securities or any other agreement or otherwise; (ii) any extension or renewal of any thereof; (iii)
any rescission, waiver, amendment or modification of any of the terms or provisions of this
Indenture, the Securities or any other agreement; (iv) the release of any security held by any
Holder or the Trustee for the Guaranteed Obligations or any of them; (v) the failure of any holder
or the Trustee to exercise any right or remedy against any other Subsidiary Guarantor; or (vi) any
change in the ownership of the Subsidiary Guarantors, except as provided in Section 10.02.

     Each Subsidiary Guarantor agrees that its Subsidiary Guarantee constitutes a Guarantee of
payment, performance and compliance when due (and not a Guarantee of collection) and waives any
right to require that any resort be had by any Holder or the Trustee to any security held for
payment of the Guaranteed Obligations.

     Except as expressly set forth in Section 10.02, the obligations of the Subsidiary Guarantors
hereunder shall not be subject to any reduction, limitation, impairment or termination for any
reason (other than payment of the Guaranteed Obligations in full), including any claim of waiver,
release, surrender, alteration or compromise, and shall not be subject to any defense of setoff,
counterclaim, recoupment or termination whatsoever or by reason of the invalidity, illegality or
unenforceability of the Guaranteed Obligations or otherwise. Without limiting the generality of the
foregoing, the obligations of the Subsidiary Guarantors herein shall not be discharged or impaired
or otherwise affected by the failure of any Holder or the Trustee to assert any claim or demand or
to enforce any remedy under this Indenture, the Securities or any other agreement, by any waiver or
modification of any thereof, by any default, failure or delay, willful or otherwise, in the
performance of the Guaranteed Obligations, or by any other act or thing or omission or delay to do
any other act or thing which may or might in any manner or to any extent vary the risk of the
Subsidiary Guarantors or would otherwise operate as a discharge of the Subsidiary Guarantors as a
matter of law or equity.

     Subject to Section 3.03, each Subsidiary Guarantor agrees that its Subsidiary Guarantee shall
remain in full force and effect until payment in full of all the Guaranteed Obligations or such
Subsidiary Guarantor is released from its Subsidiary Guarantee upon the sale of a majority of the
total voting power of the Capital Stock or all or substantially all of the assets of the Subsidiary
Guarantor in compliance with Section 10.02. Each Subsidiary Guarantor further agrees that its
Subsidiary Guarantee shall continue to be effective or be reinstated, as the case may be, if at any
time payment, or any part thereof, of principal of or interest on any Guaranteed Obligation is
rescinded or must otherwise be restored by any Holder or the Trustee upon the bankruptcy or
reorganization of the Company or otherwise.

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     In furtherance of the foregoing and not in limitation of any other right which any holder or
the Trustee has at law or in equity against the Subsidiary Guarantors by virtue hereof, upon the
failure of the Company to pay any Guaranteed Obligation when and as the same shall become due,
whether at Stated Maturity, by acceleration, by redemption, by purchase or otherwise, the
Subsidiary Guarantors hereby promise to and shall, upon receipt of written demand by the Trustee,
forthwith pay, or cause to be paid, in cash, to the Holders or the Trustee an amount equal to the
sum of (i) the unpaid principal amount of such Guaranteed Obligations, (ii) accrued and unpaid
interest on such Guaranteed Obligations (but only to the extent not prohibited by law) and (iii)
all other monetary obligations of the Company to the holders and the Trustee.

     Each Subsidiary Guarantor further agrees that it shall not be entitled to any right of
subrogation in relation to the Holders in respect of any Guaranteed Obligations Guaranteed hereby
until payment in full of all Guaranteed Obligations. Each Subsidiary Guarantor further agrees
that, as between such Subsidiary Guarantor, on the one hand, and the Holders and the Trustee, on
the other hand, (i) the maturity of the Guaranteed Obligations Guaranteed hereby may be accelerated
as provided in Article 6 for the purposes of its Subsidiary Guarantee, notwithstanding any stay,
injunction or other prohibition preventing such acceleration in respect of the Guaranteed
Obligations Guaranteed hereby, and (ii) in the event of any declaration of acceleration of such
Guaranteed Obligations as provided in Article 6, such Guaranteed Obligations (whether or not due
and payable) shall forthwith become due and payable by the Subsidiary Guarantor or the purposes of
this Section 10.01.

     Each Subsidiary Guarantor also agrees to pay any and all reasonable costs and expenses
(including reasonable attorneys’ fees and expenses) incurred by the Trustee or any Holder in
enforcing any rights under this Section 10.01.

     Upon request of the Trustee, the Subsidiary Guarantors shall execute and deliver such further
instruments and do such further acts as may be reasonably necessary or proper to carry out more
effectively the purpose of this Indenture.

     Section 10.02 . Limitation on Liability; Release and Discharge; Termination on Conversion.
Any other term or provision of this Indenture to the contrary notwithstanding, the maximum
aggregate amount of the Guaranteed Obligations Guaranteed hereunder by each Subsidiary Guarantor
shall not exceed the maximum amount that can be hereby Guaranteed without rendering this Indenture,
as it relates to such Subsidiary Guarantor, voidable under applicable law relating to fraudulent
conveyance or fraudulent transfer or similar laws affecting the rights of creditors generally.

     Each Subsidiary Guarantor shall be deemed to be released from all obligations under this
Article 10 (without any further action by the Trustee or the Holders) upon (i) the sale or other
disposition (including by way of any merger or consolidation), in one transaction or a series of
related transactions, of a majority of the total voting power of the Capital Stock or other
interests
of such Subsidiary Guarantor or (ii) the sale or other disposition of all or substantially all
of the assets of the Subsidiary Guarantor, in each case, other than the sale or other disposition
to the

46

 

Company or any Affiliate of the Company. At the request and at the expense of the Company,
the Trustee shall execute and deliver an appropriate instrument evidencing such release (in the
form provided by the Company).

     Each Subsidiary Guarantor shall also be deemed released from all its obligations under this
Indenture and its Subsidiary Guarantee and such Subsidiary Guarantee will terminate upon the
discharge of the Securities pursuant to the provisions of Article 8 hereof.

     Each Subsidiary Guarantee with respect to a Security will automatically terminate immediately
prior to such Security’s conversion.

     Section 10.03 . Right of Contribution. Each Subsidiary Guarantor hereby agrees that to the extent
that any Subsidiary Guarantor shall have paid more than its proportionate share of any payment made
on the obligations under the Subsidiary Guarantees, such Subsidiary Guarantor shall be entitled to
seek and receive contribution from and against the Company or any other Subsidiary Guarantor who
has not paid its proportionate share of such payment. The provisions of this Section 10.03 shall
in no respect limit the obligations and liabilities of each Subsidiary Guarantor to the Trustee and
the Holders and each Subsidiary Guarantor shall remain liable to the Trustee and the Holders for
the full amount Guaranteed by such Subsidiary Guarantor hereunder.

ARTICLE 11

Purchase at the Option of Holder Upon a Fundamental

Change; Purchase at the Option of Holder

     Section 11.01 . Purchase at the Option of the Holder Upon a Fundamental Change. If a Fundamental
Change shall occur at any time, each Holder shall have the right, at such Holder’s option, to
require the Company to purchase all or a portion of such Holder’s Securities on a date specified by
the Company that is no later than 35 calendar days after the date of the Company Notice of the
occurrence of such Fundamental Change, subject to extension to comply with applicable law (the
“Fundamental Change Purchase Date”). The Securities shall be purchased in multiples of $1,000 of
the principal amount. The Company shall purchase such Securities at a price (the “Fundamental
Change Purchase Price”), which shall be paid in cash, equal to 100% of the principal amount of the
Securities to be purchased plus any accrued and unpaid interest to, but not including, the
Fundamental Change Purchase Date, unless the Fundamental Change Purchase Date is between a Regular
Record Date and the interest payment date to which it relates, in which case the Fundamental Change
Purchase Price shall equal 100% of the principal amount of Securities to be purchased and any
accrued and unpaid interest shall be paid to the Holder of record on the Regular Record Date.

     (a) Notice of Fundamental Change. The Company shall mail to all Holders, the Paying Agent and
the Trustee a Company Notice of the occurrence of a Fundamental Change and of the purchase right
arising as a result thereof, including the information required by

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Section 11.03(a) hereof, on or
before the 20th calendar day after the occurrence of such Fundamental Change.

     (b) Exercise of Option. For Securities to be so purchased at the option of the Holder, the
Holder must deliver or cause to be effected a book-entry transfer of such Securities to the Paying
Agent (together with all necessary endorsements) at the offices of the Paying Agent, together with,
in the case of Definitive Securities, a written notice of purchase (a “Fundamental Change Purchase
Notice”) in the form entitled “Form of Fundamental Change Purchase Notice” attached to the
Securities duly completed, by 5:00 p.m., New York City time, on the Business Day immediately
preceding the Fundamental Change Purchase Date, subject to extension to comply with applicable law;
provided, however, that such Fundamental Change Repurchase Price shall be so paid pursuant to this
Section 11.01 only if the Securities so delivered or transferred to the Paying Agent shall conform
in all respects to the description thereof in the related Fundamental Change Purchase Notice. The
Fundamental Change Purchase Notice shall state:

     (i) if Definitive Securities have been issued, the certificate numbers of the
Securities which the Holder shall deliver to be purchased or;

     (ii) the portion of the principal amount of the Securities which the Holder shall
deliver to be purchased, which portion must be $1,000 in principal amount or a multiple
thereof; and

     (iii) that such Securities shall be purchased as of the Fundamental Change Purchase
Date pursuant to the terms and conditions specified in paragraph 4 of the Securities and
in this Indenture.

     If Definitive Securities have not been issued, the Holder must comply with appropriate DTC
procedures.

     (c) Procedures. The Company shall purchase from a Holder, pursuant to this Section 11.01,
Securities if the principal amount of such Securities is $1,000 or a multiple of $1,000 if so
requested by such Holder.

     Any purchase by the Company contemplated pursuant to the provisions of this Section 11.01
shall be consummated by the delivery of the Fundamental Change Purchase Price to be received by the
Holder promptly following the later of the Fundamental Change Purchase Date or the time of
book-entry transfer or delivery of the Securities.

     Notwithstanding anything herein to the contrary, any Holder delivering to the Paying Agent the
Fundamental Change Purchase Notice contemplated by this Section 11.01 shall have the right at any
time prior to 5:00 p.m., New York City time, on the Business Day immediately
preceding the Fundamental Change Purchase Date to withdraw such Fundamental Change Purchase
Notice (in whole or in part) by delivery of a written notice of withdrawal to the Paying Agent in
accordance with Section 11.03(b).

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

     On or before 11:00 a.m., New York City time, on the Fundamental Change Purchase Date, the
Company shall deposit with the Paying Agent (or if the Company or an Affiliate of the Company is
acting as the Paying Agent, shall segregate and hold in trust) cash sufficient to pay the aggregate
Fundamental Change Purchase Price of the Securities to be purchased pursuant to this Section 11.01.
Payment by the Paying Agent of the Fundamental Change Purchase Price for such Securities shall be
made promptly following the later of the Fundamental Change Purchase Date or the time of book-entry
transfer or delivery of such Securities. If the Paying Agent holds, in accordance with the terms
of this Indenture, cash sufficient to pay the Fundamental Change Purchase Price of such Securities
on the Fundamental Change Purchase Date, then, on and after such date, such Securities shall cease
to be outstanding and interest on such Securities shall cease to accrue, whether or not book-entry
transfer of such Securities is made or such Securities are delivered to the Paying Agent, and all
other rights of the Holder shall terminate (other than the right to receive the Fundamental Change
Purchase Price and previously accrued and unpaid interest upon delivery or transfer of the
Securities). Nothing herein shall preclude any withholding tax required by law.

     The Company shall require each Paying Agent (other than the Trustee) to agree in writing that
the Paying Agent shall hold in trust for the benefit of Holders or the Trustee all cash held by the
Paying Agent for the payment of the Fundamental Change Purchase Price and shall notify the Trustee
of any default by the Company in making any such payment. If the Company or an Affiliate of the
Company acts as Paying Agent, it shall segregate the cash held by it as Paying Agent and hold it as
a separate trust fund. The Company at any time may require a Paying Agent to deliver all cash held
by it to the Trustee and to account for any funds disbursed by the Paying Agent. Upon doing so, the
Paying Agent shall have no further liability for the cash delivered to the Trustee.

     Section 11.02 . Purchase at the Option of the Holder.

     (a) A Holder shall have the option to require the Company to purchase any outstanding
Securities on each of May 1, 2012, May 1, 2017, May 1, 2022, May 1, 2027 and May 1, 2032 (each, a
“Purchase Date”), at a price (the “Purchase Price”) which shall be paid in cash, equal to 100% of
the principal amount of the Securities to be purchased upon:

     (i) delivery to the Paying Agent by the Holder, in the case of Definitive
Securities, of a written notice of purchase (a “Purchase Notice”) in the form entitled
“Form of Purchase Notice” attached to the Securities duly completed at any time from
9:00 a.m., New York City time, on the date that is 20 Business Days prior to a
Purchase Date until 5:00 p.m., New York City time, on the Business Day immediately
preceding such Purchase Date, stating:

     (A) the certificate numbers of the Securities which the Holder shall deliver
to be purchased;

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     (B) the portion of the principal amount of the Securities which the Holder
shall deliver to be purchased, which portion must be $1,000 in principal amount or
a multiple thereof; and

     (C) that such Securities shall be purchased as of the Purchase Date pursuant
to the terms and conditions specified in paragraph 4 of the Securities and in this
Indenture; and

     (ii) delivery or book-entry transfer of such Securities to the Paying Agent
(together with all necessary endorsements) at the offices of the Paying Agent; provided,
however, that such Purchase Price shall be so paid pursuant to this Section 11.02 only if
the Securities so delivered or transferred to the Paying Agent shall conform in all
respects to the description thereof in the related Purchase Notice.

     If Definitive Securities have not been issued, the Holder must comply with appropriate DTC
procedures.

     The accrued and unpaid interest on the Securities being purchased shall be paid to the Holder
of record on the Regular Record Date corresponding to the relevant Purchase Date.

     (b) Procedures. The Company shall purchase from a Holder, pursuant to this Section 11.02,
Securities if the principal amount of such Securities is $1,000 or a multiple of $1,000 if so
requested by such Holder.

          Any purchase by the Company contemplated pursuant to the provisions of this Section 11.02
shall be consummated by the delivery of the Purchase Price to be received by the Holder promptly
following the later of the Purchase Date or the time of book-entry transfer or delivery of the
Securities.

          Notwithstanding anything herein to the contrary, any Holder delivering to the Paying Agent the
Purchase Notice contemplated by this Section 11.02 shall have the right at any time prior to the
5:00 p.m., New York City time, on the Business Day immediately preceding the Purchase Date to
withdraw such Purchase Notice (in whole or in part) by delivery of a written notice of withdrawal
to the Paying Agent in accordance with Section 11.03(b).

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

          On or before 11:00 a.m. New York City time, on the Purchase Date, the Company shall deposit
with the Paying Agent (or if the Company or an Affiliate of the Company is acting as the Paying
Agent, shall segregate and hold in trust) cash sufficient to pay the aggregate Purchase Price of
the Securities to be purchased pursuant to this Section 11.02. Payment by the Paying Agent of the
Purchase Price for such Securities shall be made promptly following the later of the Purchase Date
or the time of book-entry transfer or delivery of such Securities. If the Paying Agent holds, in
accordance with the terms of this Indenture, cash sufficient to pay the

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Purchase Price of such
Securities on the Purchase Date, then, on and after such date, such Securities shall cease to be
outstanding and interest on such Securities shall cease to accrue, whether or not book-entry
transfer of such Securities is made or such Securities are delivered to the Paying Agent, and all
other rights of the Holder shall terminate (other than the right to receive the Purchase Price and
previously accrued and unpaid interest upon delivery or transfer of the Securities). Nothing herein
shall preclude any withholding tax required by law.

          The Company shall require each Paying Agent (other than the Trustee) to agree in writing that
the Paying Agent shall hold in trust for the benefit of Holders or the Trustee all cash held by the
Paying Agent for the payment of the Purchase Price and shall notify the Trustee of any default by
the Company in making any such payment. If the Company or an Affiliate of the Company acts as
Paying Agent, it shall segregate the cash held by it as Paying Agent and hold it as a separate
trust fund. The Company at any time may require a Paying Agent to deliver all cash held by it to
the Trustee and to account for any funds disbursed by the Paying Agent. Upon doing so, the Paying
Agent shall have no further liability for the cash delivered to the Trustee.

     Section 11.03 . Further Conditions and Procedures for Purchase at the Option of the Holder Upon a
Fundamental Change and Purchase at the Option of the Holder.

     (a) Notice of Fundamental Change or Purchase Date. The Company shall send notices (each, a
"Company Notice”) to the Holders at their addresses shown in the Securities Register maintained by
the Registrar, and delivered to the Trustee and Paying Agent, on or before the 20th calendar day
after the occurrence of the Fundamental Change or on or before the 20th Business Day prior to each
Purchase Date, as the case may be (each such date of delivery, a “Company Notice Date”). Each
Company Notice shall include a form of Fundamental Change Purchase Notice or Purchase Notice to be
completed by a Holder and shall state:

     (i) in the case of a Company Notice pursuant to Section 11.01, the events causing
the Fundamental Change;

     (ii) in the case of a Company Notice pursuant to Section 11.01, the date of the
Fundamental Change;

     (iii) the last date on which a Holder may exercise its purchase rights under Section
11.01 or Section 11.02, as applicable;

     (iv) the applicable Fundamental Change Purchase Price or Purchase Price;

     (v) the applicable Fundamental Change Purchase Date or Purchase Date;

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

     (vii) if applicable, the conversion rights of the Holders with respect to the
Securities and the Conversion Rate at the time of such notice and any expected
adjustments to the Conversion Rate;

51

 

     (viii) the procedures the Holder must follow under Sections 11.01 or 11.02, as
applicable, and Section 11.03;

     (ix) that Securities must be surrendered to the Paying Agent to collect payment of
the Fundamental Change Purchase Price or Purchase Price;

     (x) if applicable, that Securities as to which a Fundamental Change Purchase Notice
or Purchase Notice has been given may be converted only if the applicable Fundamental
Change Purchase Notice or Purchase Notice has been withdrawn in accordance with the terms
of this Indenture;

     (xi) that the Fundamental Change Purchase Price or Purchase Price for any Securities
as to which a Fundamental Change Purchase Notice or Purchase Notice, as applicable, has
been given and not withdrawn shall be paid by the Paying Agent promptly following the
later of the Fundamental Change Purchase Date or Purchase Date, as applicable, or the
time of book-entry transfer or delivery of such Securities;

     (xii) that, unless the Company defaults in making payment of such Fundamental Change
Purchase Price or Purchase Price on Securities covered by any Fundamental Change Purchase
Notice or Purchase Notice, as applicable, interest will cease to accrue on and after the
Fundamental Change Purchase Date or Purchase Date, as applicable;

     (xiii) the procedures for withdrawing a Fundamental Change Purchase Notice or
Purchase Notice; and

     (xiv) the CUSIP or ISIN number of the Securities.

     Simultaneously with providing such Company Notice, the Company will publish a notice
containing the information in such Company Notice in a newspaper of general circulation in New York
City or publish such information on its then existing website or through such other public medium
as it may use at the time.

     At the Company’s request, made at least five Business Days prior to the date upon which such
notice is to be mailed, and at the Company’s expense, the Paying Agent shall give the
Company Notice in the Company’s name; provided, however, that, in all cases, the text of the
Company Notice shall be prepared by the Company.

     (b) Effect of Purchase Notice or Fundamental Change Purchase Notice; Withdrawal; Effect of
Event of Default. Upon receipt by the Company of the Fundamental Change Purchase Notice or
Purchase Notice specified in Section 11.01(b) or Section 11.02(a), as applicable, the Holder of the
Securities in respect of which such Fundamental Change Purchase Notice or Purchase Notice, as the
case may be, was given shall (unless such Fundamental Change Purchase Notice or Purchase Notice is
withdrawn as specified in the following two paragraphs) thereafter be entitled to receive solely
the Fundamental Change Purchase Price or Purchase Price with

52

 

respect to such Securities. Such
Fundamental Change Purchase Price or Purchase Price shall be paid by the Paying Agent to such
Holder promptly following the later of (x) the Fundamental Change Purchase Date or the Purchase
Date, as the case may be, with respect to such Securities (provided the conditions in this Article
11 have been satisfied) and (y) the time of delivery or book-entry transfer of such Securities to
the Paying Agent by the Holder thereof in the manner required by Section 11.01 or Section 11.02, as
applicable. Securities in respect of which a Fundamental Change Purchase Notice or Purchase Notice,
as the case may be, has been given by the Holder thereof may not be converted on or after the date
of the delivery of such Fundamental Change Purchase Notice or Purchase Notice, as the case may be,
unless such Fundamental Change Purchase Notice or Purchase Notice, as the case may be, has first
been validly withdrawn as specified in the following two paragraphs.

     A Fundamental Change Purchase Notice or Purchase Notice, as the case may be, may be withdrawn
by means of a written notice of withdrawal delivered to the office of the Paying Agent at any time
prior to 5:00 p.m., New York City time, on the Business Day immediately preceding the Fundamental
Change Purchase Date or the Purchase Date, as the case may be, to which it relates, specifying:

     (i) the principal amount of the Securities with respect to which such notice of
withdrawal is being submitted;

     (ii) if Definitive Securities have been issued, the certificate number of the
Securities in respect of which such notice of withdrawal is being submitted, or, if
Definitive Securities have not been issued, the written notice of withdrawal must comply
with appropriate DTC procedures; and

     (iii) the principal amount, if any, of such Securities which remains subject to the
original Fundamental Change Purchase Notice or Purchase Notice, as the case may be, and
which has been or shall be delivered for purchase by the Company.

     There shall be no purchase of any Securities pursuant to Section 11.01 or Section 11.02 if an
Event of Default has occurred and is continuing (other than a default that is cured by the payment
of the Fundamental Change Purchase Price or Purchase Price, as the case may be). The Paying Agent
shall promptly return to the respective Holders thereof any Securities (x) with respect to which a
Fundamental Change Purchase Notice or Purchase Notice, as the case may be,
has been withdrawn in compliance with this Indenture, or (y) held by it during the continuance
of an Event of Default (other than a default that is cured by the payment of the Fundamental Change
Purchase Price or Purchase Price, as the case may be) in which case, upon such return, the
Fundamental Change Purchase Notice or Purchase Notice with respect thereto shall be deemed to have
been withdrawn.

     (c) Securities Purchased in Part. Any Securities that are to be purchased only in part shall
be surrendered at the office of the Paying Agent (with, if the Company or the Trustee so requires,
due endorsement by, or a written instrument of transfer in form satisfactory to the Company and the
Trustee duly executed by, the Holder thereof or such Holder’s attorney duly

53

 

authorized in writing)
and the Company shall execute and the Trustee or the Authenticating Agent shall authenticate and
shall make available for delivery to the Holder of such Securities, without service charge, a new
Security or Securities, of any authorized denomination as requested by such Holder in aggregate
principal amount equal to, and in exchange for, the portion of the principal amount of the
Securities so surrendered which is not purchased or redeemed.

     (d) Covenant to Comply with Securities Laws Upon Purchase of Securities. In connection with
any offer to purchase Securities under Section 11.01 or Section 11.02, the Company shall, to the
extent applicable, (a) comply with Rules 13e-4 and 14e-1 (and any successor provisions thereto)
under the Exchange Act, if applicable; (b) file the related Schedule TO (or any successor schedule,
form or report) under the Exchange Act, if applicable; and (c) otherwise comply with all applicable
federal and state securities laws so as to permit the rights and obligations under Section 11.01 or
Section 11.02 to be exercised in the time and in the manner specified in Section 11.01 or Section
11.02.

     (e) Repayment to the Company. The Trustee and the Paying Agent shall return to the Company
any cash or property that remains unclaimed, as provided in paragraph 8 of the Securities, together
with interest that the Trustee or Paying Agent, as the case may be, has expressly agreed in writing
to pay, if any, that is held by them for the payment of a Fundamental Change Purchase Price or
Purchase Price, as the case may be; provided, however, that to the extent that the aggregate amount
of cash or property deposited by the Company pursuant to Section 11.01(c) or Section 11.02(b), as
applicable, exceeds the aggregate Fundamental Change Purchase Price or Purchase Price, as the case
may be, of the Securities or portions thereof which the Company is obligated to purchase as of the
Fundamental Change Purchase Date or Purchase Date, as the case may be, then promptly on and after
the Business Day following the Fundamental Change Purchase Date or Purchase Date, as the case may
be, the Trustee and the Paying Agent shall return any such excess to the Company together with
interest that the Trustee or Paying Agent, as the case may be, has expressly agreed in writing to
pay, if any.

ARTICLE 12

Conversion

     Section 12.01 . Conversion of Securities
.. (a) Right to Convert. Subject to and upon compliance with the provisions of this Indenture,
each Holder shall have the right, at such Holder’s option, at any time following the Issue Date of
the Securities hereunder through prior to the close of business on the Business Day immediately
preceding the Stated Maturity to convert the principal amount of any such Securities, or any
portion of such principal amount which is $1,000 or an integral multiple thereof at the Conversion
Price then in effect, subject to prior repurchases of the Securities.

     (b) Company to Deliver Common Stock, Cash or Combination Thereof. Upon conversion of a
Security, the Company will have the option to deliver shares of Common Stock, cash or a combination
of cash and shares of Common Stock for the Securities surrendered as set forth below. The Trustee
will initially act as Conversion Agent. A Holder may convert fewer

54

 

than all of such Holder’s
Securities so long as the Securities converted are an integral multiple of $1,000 principal amount.

     (i) The Company will have the option to deliver cash in lieu of some or all of the
Common Stock to be delivered upon conversion of the Securities. The Company will give
notice of its election to deliver part or all of the conversion consideration in cash to
the Holder converting the Securities within two Business Days of the Company’s receipt of
the Holder’s notice of conversion. The amount of cash to be delivered per Security will
be equal to the number of shares of Common Stock in respect of which the cash payment is
being made multiplied by the average of the Daily VWAP prices of the shares of Common
Stock for the 20 Trading Days commencing one day after (a) the date of the Company’s
notice of election to deliver all or part of the conversion consideration in cash if it
has not given a notice of redemption or (b) the Conversion Date, in the case of
conversion following notice of redemption specifying the Company’s intention to deliver
cash upon conversion.

     (ii) If the Company elects to deliver cash in lieu of some or all of the shares of
Common Stock issuable upon conversion, it will make the payment, including delivery of
the shares of Common Stock, through the Conversion Agent, to Holders surrendering
Securities no later than the fourteenth Business Day following the Conversion Date.
Otherwise, the Company will deliver the shares of Common Stock, together with any cash
payment for fractional shares, as described below, through the Conversion Agent no later
than the fifth Business Day following the Conversion Date.

     (iii) The Company may not deliver cash in lieu of any shares of Common Stock
issuable upon a Conversion Date (other than in lieu of fractional shares) if there has
occurred and is continuing an Event of Default under the Indenture, other than an Event
of Default that is cured by the payment of the conversion consideration.

     (iv) If the Company calls Securities for redemption, a Holder of Securities may
convert the Securities only until 5:00 p.m., New York City time, on the Business Day
immediately preceding the Redemption Date, unless the Company fails to pay the Redemption
Price. If a Holder of Securities has submitted the Securities for purchase upon a
Fundamental Change, a Holder of Securities may convert the Securities only if
that Holder withdraws the Fundamental Change Purchase Notice or Purchase Notice
specified in Section 11.01(b) or Section 11.02(a), as applicable, made by that Holder.

     (v) Upon conversion, a Holder will not receive any separate cash payment for accrued
and unpaid interest unless such conversion occurs between a Regular Record Date and the
interest payment date to which it relates. The Company will not issue fractional shares
of Common Stock upon conversion of Securities. Instead, the Company will pay cash in
lieu of fractional shares in accordance with Section 12.01(d) below.

55

 

     (c) Conversion Procedures. The following procedures shall apply to the conversion of
Securities:

     (i) In respect of a Definitive Security, a Holder must (A) complete and manually
sign a written notice of conversion (a “Conversion Notice”) in the form entitled “Form of
Conversion Notice” attached to the Security, or facsimile of such Conversion Notice; (B)
deliver such Conversion Notice, which is irrevocable, and the Security to the Conversion
Agent at the office maintained by the Conversion Agent for such purpose; (C) to the
extent any shares of Common Stock issuable upon conversion are to be issued in a name
other than the Holder’s, furnish endorsements and transfer documents as may be required
by the Conversion Agent and, if required pursuant to Section 12.01(e), pay all transfer
or similar taxes or duties; and (D) if required pursuant to Section 2.01(d), pay funds
equal to interest payable on the next interest payment date.

     (ii) In respect of a beneficial interest in a Global Security, a Beneficial Owner
must (A) comply with DTC’s procedures for converting a beneficial interest in a Global
Security, (B) to the extent any shares of Common Stock issuable upon conversion are to be
issued in a name other than the Holder’s, if required pursuant to Section 12.01(e), pay
all transfer or similar taxes or duties and (C) if required pursuant to Section 2.01(d),
pay funds equal to interest payable on the next interest payment date.

The date a Holder satisfies the foregoing requirements is the “Conversion Date” hereunder.

     If a Holder converts more than one Security at the same time, the cash and number of shares of
Common Stock issuable upon the conversion, if any, shall be based on the total principal amount of
the Securities converted.

     Securities called for redemption may be converted at any time prior to 5:00 p.m., New York
City time, on the Business Day prior to the Redemption Date, unless the Company fails to pay the
Redemption Price. If a Holder has delivered a Fundamental Change Purchase Notice or a Purchase
Notice with respect to a Security, the Holder may not surrender that Security for conversion until
the Holder has withdrawn the notice in accordance with Section 11.03(b).

     Upon surrender of a Security that is converted in part, the Company shall execute, and the
Trustee or the Authenticating Agent shall authenticate and make available for delivery to the
Holder, a new Security in an authorized denomination equal in principal amount to the unconverted
portion of the Security surrendered.

     (d) Cash Payments in Lieu of Fractional Shares. The Company shall not issue a fractional share
of Common Stock upon conversion of Securities. Instead the Company shall deliver cash for the
current market value of the fractional share. The current market value of a fractional share shall
be based on the last reported sales price of share of the Common Stock on the Trading Day prior to
the Conversion Date.

56

 

     (e) Taxes on Conversion. If a Holder converts Securities, the Company shall pay any
documentary, stamp or similar issue or transfer tax due on the issue of shares of Common Stock upon
the conversion. However, the Holder shall pay any such tax which is due because the Holder requests
the shares to be issued in a name other than the Holder’s name. The Conversion Agent may refuse to
deliver the certificates representing the Common Stock being issued in a name other than the
Holder’s name until the Conversion Agent receives a sum sufficient to pay any tax which shall be
due because the shares are to be issued in a name other than the Holder’s name, but the Conversion
Agent shall have no duty to determine if any such tax is due. Nothing herein shall preclude any
withholding of tax required by law.

     (f) Certain Covenants of the Company.

     (i) The Company shall, prior to issuance of any Securities hereunder, and from time
to time as may be necessary, reserve out of its authorized but unissued Common Stock or
 shares of Common Stock held in treasury, a sufficient number of shares of Common Stock,
free of preemptive rights, to permit the conversion of the Securities.

     (ii) All shares of Common Stock delivered upon conversion of the Securities shall be
newly issued shares or shares held in treasury, shall be duly and validly issued and
fully paid and nonassessable and shall be free from preemptive rights and free of any
lien or adverse claim.

     (iii) The Company shall endeavor promptly to comply with all federal and state
securities laws regulating the issuance and delivery of shares of Common Stock upon the
conversion of Securities, if any, and shall cause to have listed or quoted all such
            shares of Common Stock on each U.S. national securities exchange or automatic quotation
system or over-the-counter or other domestic market on which the Common Stock is then
listed or quoted.

     Section 12.02 . Adjustments to Conversion Rate. The Conversion Rate shall be adjusted from time
to time by the Company as follows:

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

	 	 	 	 	 
	where,
	 	 	 	 
	 
	 	 	 	 
	CR0

	 	=
	 	the Conversion Rate in effect immediately prior to such
event
	 
	 	 	 	 
	CR’

	 	=
	 	the Conversion Rate in effect immediately after such event

57

 

	 	 	 	 	 
	OS0

	 	=
	 	the number of shares of Common Stock outstanding
immediately prior to such event
	 
	 	 	 	 
	OS’

	 	=
	 	the number of shares of Common Stock outstanding
immediately after such event.

Such adjustment shall become effective immediately after 9:00 a.m., New York City time, on the
Business Day following the Record Date for such dividend or distribution, or the date fixed for
determination for such share split or share combination. The Company will not pay any dividend or
make any distribution on shares of Common Stock held in treasury by the Company. If any dividend
or distribution of the type described in this Section 12.02(a) is declared but not so paid or made,
or the outstanding shares of Common Stock are not subdivided or combined, as the case may be, the
Conversion Rate shall again be adjusted, effective as of the date the Board of Directors determines
not to pay such divided or distribution, or subdivide 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 or
distribution, or subdivision or combination, had not been declared.

     (b) If the Company issues to all or substantially all holders of its Common Stock any rights
or warrants entitling them for a period of not more than 60 calendar days to subscribe for or
purchase shares of Common Stock, at a price per share less than the average of the Last Reported
Sale Prices of the Common Stock for the 10 consecutive Trading Day period ending on the Business
Day immediately preceding the date of announcement of the issuance of such rights, the Conversion
Rate will be adjusted based on the following formula:

	 	 	 	 	 
	where,
	 	 	 	 
	 
	 	 	 	 
	CR0

	 	=
	 	the Conversion Rate in effect immediately prior to such
event
	 
	 	 	 	 
	CR’

	 	=
	 	the Conversion Rate in effect immediately after such event
	 
	 	 	 	 
	OS0

	 	=
	 	the number of shares of Common Stock outstanding
immediately prior to such event
	 
	 	 	 	 
	X

	 	=
	 	the total number of shares of Common Stock issuable
pursuant to such rights
	 
	 	 	 	 
	Y

	 	=
	 	the number of shares of Common Stock equal to the
aggregate price payable to exercise such rights divided
by the average of the Last Reported Sale Prices of the
Common Stock over the 10 consecutive Trading Day period
ending on the Business Day immediately preceding the date
of announcement of the issuance of such rights.

58

 

Such adjustment shall be successively made whenever any such rights or warrants are issued and
shall become effective immediately after 9:00 a.m., New York City time, on the Business Day
following the date fixed for determination of Holders entitled to receive such rights or warrants.
The Company will not issue any such rights or warrants in respect of any shares of Common Stock
held in treasury by the Company. To the extent that shares of Common Stock are not delivered after
the expiration of such rights 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 or warrants been made on the basis of delivery of only the number of shares of Common Stock
actually delivered. If such rights 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 date fixed for the
determination of stockholders entitled to receive such rights or warrants had not been fixed.

In determining whether any rights or warrants entitle the holders to subscribe for or purchase
shares of Common Stock at less than such Last Reported Sale Price, and in determining the aggregate
offering price of such shares of Common Stock, there shall be taken into account any consideration
received by the Company for such rights or warrants and any amount payable on exercise or
conversion thereof, the value of such consideration, if other than cash, to be determined in good
faith by the Board of Directors.

     (c) If the Company distributes shares of Capital Stock, evidences of its indebtedness or other
assets or property of the Company to all or substantially all holders of the Common Stock,
excluding:

     (i) dividends or distributions and rights or warrants referred to in clause (a) or
(b) above; and

     (ii) dividends or distributions referred to in clause (d) below;

then the Conversion Rate will be adjusted based on the following formula:

	 	 	 	 	 
	where,
	 	 	 	 
	 
	 	 	 	 
	CR0

	 	=
	 	the Conversion Rate in effect immediately prior to such
distribution
	 
	 	 	 	 
	CR’

	 	=
	 	the Conversion Rate in effect immediately after such distribution
	 
	 	 	 	 
	SP0

	 	=
	 	the average of the Last Reported Sale Prices of the Common Stock
over the 10 consecutive Trading Day period ending on the
Business Day immediately preceding the Ex-Dividend Date for such
distribution
	 
	 	 	 	 
	FMV

	 	=
	 	the Fair Market Value (as determined by the Board of Directors)
of the shares of Capital Stock, evidences of indebtedness,
assets or property distributed with respect to each outstanding
share of Common Stock on the Record Date for such distribution.

59

 

Such adjustment shall become effective immediately prior to 9:00 a.m., New York City time, on the
Business Day following the Record Date such distribution.

     With respect to an adjustment pursuant to this clause (c) where there has been a payment of a
dividend or other distribution on the Common Stock or shares of Capital Stock of any class or
series, or similar equity interest, of or relating to a Subsidiary or other business unit (a
“Spin-Off”), the Conversion Rate in effect immediately before 5:00 p.m., New York City time, on the
tenth Trading Day immediately following, and including, the effective date for such Spin-Off will
be increased based on the following formula:

	 	 	 	 	 
	where,
	 	 	 	 
	 
	 	 	 	 
	CR0

	 	=
	 	the Conversion Rate in effect immediately prior to such
distribution
	 
	 	 	 	 
	CR’

	 	=
	 	the Conversion Rate in effect immediately after such distribution
	 
	 	 	 	 
	FMV0

	 	=
	 	the average of the Last Reported Sale Prices of the Capital
Stock or similar equity interest distributed to holders of
Common Stock applicable to one share of Common Stock over the
first 10 consecutive Trading Day period after the effective date
of the Spin-Off
	 
	 	 	 	 
	MP0

	 	=
	 	the average of the Last Reported Sale Prices of Common Stock
over the first 10 consecutive Trading Day period after the
effective date of the Spin-Off.

Such adjustment shall occur on the tenth Trading Day from, and including, the effective date of the
Spin-Off.

     (d) If the Company pays any cash dividend or distribution to all or substantially all holders
of Common Stock, the Conversion Rate will be adjusted based on the following formula:

	 	 	 	 	 
	where,
	 	 	 	 
	 
	 	 	 	 
	CR0

	 	=
	 	the Conversion Rate in effect immediately prior to
the Record Date for such distribution

60

 

	 	 	 	 	 
	CR’

	 	=
	 	the Conversion Rate in effect
immediately after the Record Date for such distribution
	 
	 	 	 	 
	SP0

	 	=
	 	the Last Reported Sale Price of the Common Stock
on the Trading Day immediately preceding the
Ex-Dividend Date for such distribution
	 
	 	 	 	 
	C

	 	=
	 	the amount in cash per share the Company
distributes to holders of Common Stock

Such adjustment shall become effective immediately after 5:00 p.m., New York City time, on the
Record Date for such dividend or distribution; provided that 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.

     (e) If the Company or any of its Subsidiaries make a payment in respect of a tender or
exchange offer for Common Stock, to the extent that the cash and value of any other consideration
included in the payment per share of Common Stock exceeds the Last Reported Sale Price of the
Common Stock on the Trading Day next succeeding the last date on which tenders or exchanges may be
made pursuant to such tender offer or exchange offer (such last date, the “Expiration Time”), the
Conversion Rate will be increased based on the following formula:

	 	 	 	 	 
	where,
	 	 	 	 
	 
	 	 	 	 
	CR0

	 	=
	 	the Conversion Rate in effect on
the date such
tender offer or exchange offer expires
	 
	 	 	 	 
	CR’

	 	=
	 	the Conversion Rate in effect on
the day next
succeeding the date such tender or exchange offer expires
	 
	 	 	 	 
	AC

	 	=
	 	the aggregate value of all cash and any other
consideration (as determined by the Board of
Directors) paid or payable for shares purchased in
such tender offer or exchange offer
	 
	 	 	 	 
	OS0

	 	=
	 	the number of shares of Common Stock outstanding
immediately prior to the date such tender or
exchange offer expires
	 
	 	 	 	 
	OS’

	 	=
	 	the number of shares of Common Stock outstanding
immediately after the date such tender or exchange
offer expires

61

 

	 	 	 	 	 
	SP’

	 	=
	 	the average of the Last Reported Sale Prices of
Common Stock over the 10 consecutive Trading Day
period commencing on the Trading Day next
succeeding the date such tender or exchange offer
expires

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 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.

     (f) Notwithstanding the foregoing provisions of this Section 12.02, no adjustment shall be
made thereunder, nor shall an adjustment be made to the ability of a Holder to convert, for any
distribution described therein if the Holder will otherwise participate in the distribution without
conversion of such Holder’s Securities.

     (g) The Company may (but is not required to) make such increases in the Conversion Rate, in
addition to those required by clauses (a) through (e) of this Section 12.02 as the Board of
Directors considers to be advisable to avoid or diminish any income tax to holders of Common Stock
or rights to purchase Common Stock in connection with a dividend or distribution of shares (or
rights to acquire shares) or any similar event treated as such for income tax purposes.

     (h) To the extent permitted by applicable law, the Company from time to time may increase the
Conversion Rate by any amount for any period of at least 20 Business Days if the Board of Directors
shall have made a determination that such increase would be in the best interests of the Company,
which determination shall be conclusive.

     (i) Notwithstanding any provision herein to the contrary, no adjustment to the Conversion Rate
need be made:

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

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

     (iii) upon the issuance of any shares of Common Stock pursuant to any option,
warrant, right, or exercisable, exchangeable or convertible security not described in
clause (ii) above and outstanding as of the Issue Date;

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

     (v) for accrued and unpaid interest.

62

 

To the extent the Securities become convertible into cash, assets or property (other than Capital
Stock of the Company or securities to which Section 12.03 applies), no adjustment shall be made
thereafter as to the cash, assets or property. Interest shall not accrue on such cash, assets or
property.

     (j) All calculations under this Section 12.02 shall be made by the Company and shall be made
to the nearest cent or to the nearest one-ten thousandth (1/10,000) of a share, as the case may be.
Except as described above in this Section 12.02, the Company will not adjust the Conversion Rate.

     (k) 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 Trust 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 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 mail such notice of such
adjustment of the Conversion Rate to the Holder of each Security at such Holder’s last address
appearing on the Securities Register provided for in Section 2.05 of this Indenture within 20
Business Days after execution thereof. Failure to deliver such notice shall not affect the
legality or validity of any such adjustment.

     (l) Any case in which this Section 12.02 provides that an adjustment shall become effective
immediately after (i) a Record Date for a dividend or distribution described in Section 12.02(a),
Section 12.02(c) or Section 12.02(d), (ii) the date fixed for the determination of a share
split or combination pursuant to Section 12.02(a), (iii) the date fixed for the determination
of Holders entitled to receive rights or warrants pursuant to 12.02(b) or (iv) the Expiration Time
for any tender or exchange offer pursuant to Section 12.02(e), (each a “Determination Date”), the
Company may elect to defer until the occurrence of the applicable Adjustment Event (as hereinafter
defined) (x) issuing to the Holder of any Security converted after such Determination Date and
before the occurrence of such Adjustment Event, the additional shares of Common Stock or other
securities issuable upon such conversion by reason of the adjustment required by such Adjustment
Event over and above the Common Stock issuable upon such conversion before giving effect to such
adjustment and (y) paying to such Holder any amount in cash in lieu of any fraction pursuant to
Section 12.01. For purposes of this Section 12.02(l), the term “Adjustment Event” shall mean:

     (1) in any case referred to in clause (i) hereof, the date any such dividend or
distribution is paid or made;

     (2) in any case referred to in clause (ii) hereof, the occurrence of such event;

63

 

     (3) in any case referred to in clause (iii) hereof, the date of expiration of such
rights or warrants;

     (4) in any case referred to in clause (iv) hereof, the date a sale or exchange of
Common Stock pursuant to such tender or exchange offer is consummated and becomes
irrevocable.

     (m) For purposes of this Section 12.02, 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.

     (n) Whenever any provision of this Article 12 requires a calculation of an average of Last
Reported Sale Prices or Daily VWAP over a span of multiple days, the Company will make appropriate
adjustments (determined in good faith by the Board of Directors) 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, at any time during the period from which the
average is to be calculated.

     Section 12.03 . Adjustment Upon Certain Fundamental Changes. (a) If a Holder elects to convert
Securities upon the occurrence of a Fundamental Change, the Conversion Rate for such Securities
shall be increased by an additional number of shares of Common Stock (the “Additional Shares”) as
described below.

     (b) The number of additional shares of Common Stock by which the Conversion Rate will be
increased will be determined by reference to the table attached as Schedule A hereto,
based on the date on which the Fundamental Change occurs or becomes effective (the “Effective
Date”) and the Stock Price with respect to such transaction; provided that if the Stock Price is
between two Stock Price amounts set forth in such table or the Effective Date is between two
Effective Dates in the table, the number of Additional Shares will be increased will be determined
by a straight-line interpolation between the number of Additional Shares set forth for the higher
and lower Stock Price amounts and the two dates, as applicable, based on a 365-day year; provided
further that if the Stock Price is greater than $85.00 per share (subject to adjustment as set
forth in clause (c) below) or less than $20.50 per share (subject to adjustment as set forth in
clause (c) below), then no Additional Shares will be added to the Conversion Rate. Notwithstanding
the foregoing, in no event will the total number of shares of Common Stock issuable upon conversion
exceed 48.7804 shares per $1,000 principal amount of Securities, subject to adjustments in the same
manner as the Conversion Rate pursuant to Section 12.02.

     (c) The Stock Prices set forth in the first row of the table in Schedule A hereto will be
adjusted as of any date on which the Conversion Rate of the Securities is adjusted pursuant to
Section 12.02. The adjusted Stock Prices will equal the Stock Prices applicable immediately prior
to such adjustment, multiplied by a fraction, the numerator of which is the Conversion Rate
immediately prior to such adjustment and the denominator of which is the Conversion Rate as so

64

 

adjusted. The number of Additional Shares set forth in such table will be adjusted in the same
manner as the Conversion Rate as set forth in Section 12.02.

     Section 12.04 . Effect of Reclassification, Consolidation, Merger or Sale. (a) If any of the
following events occur:

     (i) any recapitalization, reclassification or change of the outstanding shares of Common Stock
(other than a subdivision or combination to which Section 12.02(a) applies);

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

     (iii) any conveyance, transfer, sale, lease or other disposition to any other Person of all or
substantially all of the properties and assets of the Company and its Subsidiaries as a result of
which holders of Common Stock received cash, securities or other property (or any combination
thereof) with respect to or in exchange for such Common Stock; or

     (iv) any statutory share exchange as a result of which holders of Common Stock received cash,
securities or other property (or any combination thereof) with respect to or in exchange for such
Common Stock, (any such event or transaction, a “Reorganization Event”), the Securities will become
convertible into the kind and amount of consideration that Holders of Common Stock received in such
Reorganization Event (the “Reference Property”) upon such Reorganization Event by a holder of a
number of shares of Common Stock equal to the Conversion Rate immediately prior to such
Reorganization Event (subject to the following
sentence) and the Company or successor Person shall execute a supplemental indenture to such
effect. In the event holders of Common Stock have the opportunity to elect the form of
consideration to be received in such recapitalization, reclassification, consolidation,
amalgamation, merger, combination, conveyance, sale, or other disposition, the Company shall make
adequate provision whereby the Holders of the Securities shall have the opportunity, on a timely
basis, to determine the form of consideration into which all of the Securities, treated as a single
class, shall be convertible. Such determination shall be based on the blended, weighted average of
elections made by Holders of the Securities who participate in such determination and shall be
subject to any limitations to which all of the holders of the Common Stock are subject, such as pro
rata reductions applicable to any portion of the consideration payable. Such supplemental
indenture shall provide for provisions and adjustments which shall be as nearly equivalent as may
be practicable to the provisions and adjustments provided for in this Article 12, Article 9 and
Article 11 and the definition of Fundamental Change, as appropriate, as determined in good faith by
the Company (which determination shall be conclusive and binding), to make such provisions apply to
such other Person if different from the original issuer of the Securities.

     (b) If a Reorganization Event occurs, the Company shall give notice to the Holders of
Securities at least 30 days prior to the effective date of any such transaction in writing and by

65

 

release to a business newswire stating the consideration into which the Securities will be
convertible after the effective date of such transaction. After such notice, the Company or the
successor or acquirer, as the case may be, may not change the consideration to be delivered upon
conversion of the Security except in accordance with any other provision of this Indenture.

     (c) Following the effective time of any such Reorganization Event, settlement of Securities
converted shall be in units of Reference Property, or at the Company’s option, cash and such units
of Reference Property, determined in accordance with Section 12.01 above based on the Daily VWAP of
such Reference Property. For the purposes of determining such Daily VWAP, (i) if the Reference
Property includes securities for which the price can be determined in a manner contemplated by the
definition of Daily VWAP, then the value of such securities shall be determined in accordance with
the principles set forth in such definition, as determined in good faith by the Company (which
determination shall be conclusive and binding); (ii) if the Reference Property includes other
property (other than securities as to which clause (i) applies or cash), then the value of such
property shall be the Fair Market Value of such property as determined by the Company’s Board of
Directors in good faith; and (iii) if the Reference Property includes cash, then the value of such
cash shall be the amount thereof.

     (d) The Company shall cause notice of the execution of any supplemental indenture required by
this Section 12.04 to be mailed to each Holder, in the manner provided in Section 13.02, within 20
calendar days after execution thereof. Failure to deliver such notice shall not affect the
legality or validity of such supplemental indenture.

     (e) The above provisions of this Section 12.04 shall similarly apply to successive
Reorganization Events.

     (f) If this Section 12.04 applies to any event or occurrence, Section 12.02 shall not apply in
respect of such event or occurrence.

     (g) The Company shall not become a party to any Reorganization Event unless its terms are
consistent with the foregoing. None of the foregoing provisions shall affect the right of a Holder
of Securities, if any, to convert the Securities into cash and shares of Common Stock, if any, as
set forth in Section 12.01 prior to the effective time of such Reorganization Event.

     Section 12.05 . Responsibility of Trustee. The Trustee and any other Conversion Agent shall not
at any time be under any duty or responsibility to the Company or any Holder of Securities to
determine the Conversion Rate, or whether any facts exist which may require any adjustment 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 in making the same. The Trustee and any other
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 or property, which may at any time be
issued or delivered upon the conversion of any Security; 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 cash or
shares of Common Stock or stock certificates or other

66

 

securities or property upon the surrender of
any Security for the purpose of conversion or to comply with any of the duties, responsibilities or
covenants of the Company contained in this Article 12. 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 12.04 relating either to the kind or amount of shares of stock or securities or
property (including cash) receivable by Holders upon the conversion of their Securities after any
Reorganization Event or to any adjustment to be made with respect thereto, but, subject to the
provisions of Section 7.01, may accept as conclusive evidence of the correctness of any such
provisions, and shall be protected in relying upon, an Officers’ Certificate with respect thereto.

     Section 12.06 . Notice to Holders Prior to Certain Actions. If :

     (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 12.02; or

     (b) the Company shall authorize the granting to the holders of all or substantially all of its
Common Stock of rights or warrants to subscribe for or purchase any share of any class or any other
rights or warrants that would require an adjustment in the Conversion Rate pursuant to Section
12.02; or

     (c) of any reclassification or reorganization 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 mailed to each Holder of Securities
in the manner provided in Section 13.02, as promptly as possible but in any event at least three
calendar days prior to the applicable date hereinafter specified, a notice stating (x) the date on
which a record is to be taken for the purpose of such dividend, distribution or rights 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 (y) 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.

67

 

     Section 12.07 . Stockholder Rights Plan. To the extent that the Company has a rights plan in
effect upon conversion of the Securities into Common Stock, the Holder will receive, in addition to
the Common Stock, the rights under the rights plan, unless prior to any conversion, the rights have
separated from the Common Stock, in which case, and only in such case, the Conversion Rate will be
adjusted at the time of separation as if the Company distributed to all holders of Common Stock
shares of the Company’s Capital Stock, evidences of indebtedness or assets as described in Section
12.02(c) above, subject to readjustment in the event of the expiration, termination or redemption
of such rights. In lieu of any such adjustment, the Company may amend such applicable stockholder
rights agreement to provide that upon conversion of the Securities the Holders will receive, in
addition to the Common Stock issuable upon such conversion, the rights which would have attached to
such Common Stock if the rights had not become separated from the Common Stock under such
applicable stockholder rights agreement.

ARTICLE 13

Miscellaneous

     Section 13.01 . TIA Controls. If any provision of this Indenture limits, qualifies or conflicts
with another provision which is required to be included in this Indenture by the TIA, the provision
required by the TIA shall control.

     Section 13.02 . Notices. Any notice or communication shall be in writing (including telecopy
promptly confirmed in writing) and delivered in person or mailed by first-class mail addressed as
follows:

if to the Company or any Subsidiary Guarantor:

Delta Petroleum Corporation, or name of Subsidiary Guarantor

370 17th Street, Suite 4300

Denver, CO 80202

Attention: Chief Financial Officer

Fax number: 303-293-0066

With a copy to:

Davis Graham & Stubbs LLP

1550 17th Street, Suite 500

Denver, CO 80202

Attention: Ronald R. Levine, II

Fax number: 303-893-1379

if to the Trustee:

U.S. Bank National Association

68

 

950 17th Street, 12th Floor

Denver, CO 80202

Attention: Corporate Trust Services

Fax: 303-585-6865

     The Company or the Trustee by notice to the other may designate additional or different
addresses for subsequent notices or communications.

     Any notice or communication mailed to a registered Holder shall be mailed to the Holder at the
Holder’s address as it appears on the registration books of the Registrar and shall be sufficiently
given if so mailed within the time prescribed.

     Failure to mail a notice or communication to a Holder or any defect in it shall not affect its
sufficiency with respect to other Holders. If a notice or communication is mailed in the manner
provided above, it is duly given, whether or not the addressee receives it, except that notices to
the Trustee shall be effective only upon receipt.

     Section 13.03 . Communication by Holders with other Holders
.. Holders may communicate pursuant to TIA § 312(b) with other Holders with respect to their rights
under this Indenture or the Securities. The Company, the Trustee, the Registrar and anyone else
shall have the protection of TIA § 312(c).

     Section 13.04 . Certificate and Opinion as to Conditions Precedent. Upon any request or
application by the Company to the Trustee to take or refrain from taking any action under this
Indenture, the Company shall furnish to the Trustee:

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

     (b) an Opinion of Counsel in form and substance reasonably satisfactory to the Trustee stating
that, in the opinion of such counsel, all such conditions precedent have been complied with.

     Section 13.05 . Statements Required in Certificate or Opinion. Each certificate or opinion with
respect to compliance with a covenant or condition provided for in this Indenture shall include:

     (a) a statement that the individual making such certificate or opinion has read such covenant
or condition;

     (b) a brief statement as to the nature and scope of the examination or investigation upon
which the statements or opinions contained in such certificate or opinion are based;

69

 

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

     (d) a statement as to whether or not, in the opinion of such individual, such covenant or
condition has been complied with.

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

     Section 13.06 . When Securities Are Disregarded. In determining whether the Holders of the
required principal amount of Securities have concurred in any direction, waiver or consent,
Securities owned by the Company or by any Person directly or indirectly controlling or controlled
by or under direct or indirect common control with the Company shall be disregarded and deemed not
to be outstanding, except that, for the purpose of determining whether the Trustee shall be
protected in relying on any such direction, waiver or consent, only Securities which a Trust
Officer of the Trustee actually knows
are so owned shall be so disregarded. Also, subject to the foregoing, only Securities outstanding
at the time shall be considered in any such determination.

     Section 13.07 . Rules by Trustee, Paying Agent and Registrar. The Trustee may make reasonable
rules for action by, or a meeting of, Holders. The Registrar and the Paying Agent may make
reasonable rules for their functions.

     Section 13.08 . Legal Holidays. A “Legal Holiday” is a Saturday, a Sunday or other day on which
commercial banking institutions are authorized or required to be closed in New York City. If a
payment date is a Legal Holiday, payment shall be made on the next succeeding day that is not a
Legal Holiday, and no interest shall accrue for the intervening period. If a Regular Record Date
is a Legal Holiday, the record date shall not be affected.

     Section 13.09 . Governing Law; Waiver of Jury Trial. THIS INDENTURE AND THE SECURITIES AND
SUBSIDIARY GUARANTEES SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAW OF THE STATE
OF NEW YORK. EACH OF THE COMPANY, THE SUBSIDIARY GUARANTORS AND THE TRUSTEE HEREBY IRREVOCABLY
WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY AND ALL RIGHT TO TRIAL BY JURY IN
ANY LEGAL PROCEEDING ARISING OF OR RELATING TO EACH OF THIS INDENTURE, THE NOTES OR THE SUBSIDIARY
GUARANTEES.

     Section 13.10 . No Recourse Against Others. An incorporator, director, officer, employee,
Affiliate or stockholder of the Company, solely by reason of this status, shall not have any
liability for any obligations of the Company under the Securities, this Indenture or for any claim
based on, in respect of or by reason of such obligations or their creation. By accepting a
Security, each Holder shall waive and release all such liability. The waiver and release shall be
part of the consideration for the issue of the Securities.

70

 

     Section 13.11 . Successors. All agreements of the Company and the Subsidiary Guarantors in this
Indenture and the Securities and the Subsidiary Guarantees shall bind their respective successors.
All agreements of the Trustee in this Indenture shall bind its successors.

     Section 13.12 . Multiple Originals. The parties may sign any number of copies of this Indenture.
Each signed copy shall be an original, but all of them together represent the same agreement. One
signed copy is enough to prove this Indenture.

     Section 13.13 . Table of Contents; Headings. The table of contents, cross-reference sheet and
headings of the Articles and Sections of this Indenture have been inserted for convenience of
reference only, are not intended to be considered a part hereof and shall not modify or restrict
any of the terms or provisions hereof.

     Section 13.14 . Severability Clause. In case any provision in this Indenture shall be invalid,
illegal or unenforceable, the validity, legality and enforceability of the remaining provisions
shall not in any way be affected or impaired thereby and such provision shall be ineffective only
to the extent of such invalidity, illegality or unenforceability.

     Section 13.15 . Calculations. Except as otherwise provided herein, the Company will be
responsible for making all calculations called for under the Indenture and the Securities. The
Company will make all such calculations in good faith and, absent manifest error, its calculations
will be final and binding on Holders. The Company upon request will provide a schedule of its
calculations to each of the Trustee and the Conversion Agent, and each of the Trustee and
Conversion Agent is entitled to rely conclusively upon the accuracy of the Company’s calculations
without independent verification. The Trustee will deliver a copy of such schedule to any Holder
upon the request of such Holder.

     Section 13.16 . No Adverse Interpretation of Other Agreements. This is Indenture may not be used
to interpret another indenture, loan or debt agreement of the Company or a Subsidiary of the
Company. Any such indenture, loan or debt agreement may not be used to interpret this Indenture.

[Remainder of the page intentionally left blank]

71

 

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

	 	 	 	 	 	 	 
	 	 	DELTA PETROLEUM CORPORATION	 	 
	 
	 	 	 	 	 	 
	 

	 	By:	 	 	 	 
	 

	 	 	 	 	 	 
	 

	 	 	 	Name:	 	 
	 

	 	 	 	Title:	 	 
	 
	 	 	 	 	 	 
	 	 	PIPER PETROLEUM COMPANY	 	 
	 
	 	 	 	 	 	 
	 

	 	By:	 	 	 	 
	 

	 	 	 	 	 	 
	 

	 	 	 	Name:	 	 
	 

	 	 	 	Title:	 	 
	 
	 	 	 	 	 	 
	 	 	DELTA EXPLORATION COMPANY, INC.	 	 
	 
	 	 	 	 	 	 
	 

	 	By:	 	 	 	 
	 

	 	 	 	 	 	 
	 

	 	 	 	Name:	 	 
	 

	 	 	 	Title:	 	 
	 
	 	 	 	 	 	 
	 	 	CASTLE TEXAS EXPLORATION LIMITED PARTNERSHIP	 	 
	 
	 	 	 	 	 	 
	 

	 	By:	 	 	 	 
	 

	 	 	 	 	 	 
	 

	 	 	 	Name:	 	 
	 

	 	 	 	Title:	 	 
	 
	 	 	 	 	 	 
	 	 	DPCA, LLC	 	 
	 
	 	 	 	 	 	 
	 

	 	By:	 	 	 	 
	 

	 	 	 	 	 	 
	 

	 	 	 	Name:	 	 
	 

	 	 	 	Title:	 	 
	 
	 	 	 	 	 	 
	 	 	DLC, INC.	 	 
	 
	 	 	 	 	 	 
	 

	 	By:	 	 	 	 
	 

	 	 	 	 	 	 
	 

	 	 	 	Name:	 	 
	 

	 	 	 	Title:	 	 

 

 

	 	 	 	 	 	 	 
	 	 	U.S. BANK NATIONAL ASSOCIATION, as Trustee	 	 
	 
	 	 	 	 	 	 
	 

	 	By:	 	 	 	 
	 

	 	 	 	 	 	 
	 

	 	 	 	Name:	 	 
	 

	 	 	 	Title:	 	 

2

 

SCHEDULE A

The following table sets forth the number of shares by which the Conversion Rate will be increased
per $1,000 principal amount of Securities pursuant to Section 12.03 of this Indenture:

	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 
	 	 	Stock Price	 
	Effective Date	 	$20.50	 	 	$25.00	 	 	$ 30.00	 	 	$35.00	 	 	$40.00	 	 	$45.00	 	 	$50.00	 	 	$55.00	 	 	$60.00	 	 	$65.00	 	 	$70.00	 	 	$75.00	 	 	$80.00	 	 	$85.00	 
	April 25, 2007
	 	 	15.8207	 	 	 	12.9074	 	 	 	9.5927	 	 	 	7.4675	 	 	 	6.0263	 	 	 	5.0050	 	 	 	4.2552	 	 	 	3.6886	 	 	 	3.2495	 	 	 	2.9019	 	 	 	2.6212	 	 	 	2.3916	 	 	 	2.2011	 	 	 	2.0407	 
	May 1, 2008
	 	 	15.8207	 	 	 	12.4112	 	 	 	9.0296	 	 	 	6.9060	 	 	 	5.4964	 	 	 	4.5184	 	 	 	3.8149	 	 	 	3.2924	 	 	 	2.8944	 	 	 	2.5840	 	 	 	2.3371	 	 	 	2.1371	 	 	 	1.9726	 	 	 	1.8353	 
	May 1, 2009
	 	 	15.8207	 	 	 	11.7347	 	 	 	8.2716	 	 	 	6.1607	 	 	 	4.8037	 	 	 	3.8921	 	 	 	3.2568	 	 	 	2.7982	 	 	 	2.4583	 	 	 	2.1994	 	 	 	1.9976	 	 	 	1.8368	 	 	 	1.7063	 	 	 	1.5987	 
	May 1, 2010
	 	 	15.8207	 	 	 	10.7953	 	 	 	7.2239	 	 	 	5.1483	 	 	 	3.8849	 	 	 	3.0834	 	 	 	2.5548	 	 	 	2.1936	 	 	 	1.9379	 	 	 	1.7508	 	 	 	1.6097	 	 	 	1.5002	 	 	 	1.4131	 	 	 	1.3421	 
	May 1, 2011
	 	 	15.8207	 	 	 	9.3450	 	 	 	5.5898	 	 	 	3.6203	 	 	 	2.5679	 	 	 	1.9904	 	 	 	1.6604	 	 	 	1.4633	 	 	 	1.3382	 	 	 	1.2538	 	 	 	1.1932	 	 	 	1.1471	 	 	 	1.1106	 	 	 	1.0802	 
	May 1, 2012
	 	 	15.8207	 	 	 	6.9945	 	 	 	1.5402	 	 	 	0.0000	 	 	 	0.0000	 	 	 	0.0000	 	 	 	0.0000	 	 	 	0.0000	 	 	 	0.0000	 	 	 	0.0000	 	 	 	0.0000	 	 	 	0.0000	 	 	 	0.0000	 	 	 	0.0000	 

Schedule A

 

 

EXHIBIT A

[FORM OF FACE OF SECURITY]

[Global Security Legend, if applicable]

No. [___]

CUSIP NO.: 247907 AD0

ISIN: US247907AD06

3 3/4% Convertible Senior Notes due 2037

     Delta Petroleum Corporation, a Delaware corporation, promises to pay to [Cede & Co.], or
registered assigns, the principal sum of [___] Million Dollars ($___) or such amount as is
indicated in the records of the Trustee and DTC, on May 1, 2037.

     Interest Payment Dates: May 1 and November 1

     Regular Record Dates: April 15 and October 15

     Additional provisions of this Security are set forth on the attached “Terms of Securities.”

A-1

 

     Dated:

	 	 	 	 	 	 	 
	 	 	DELTA PETROLEUM CORPORATION	 	 
	 
	 	 	 	 	 	 
	 

	 	By:	 	 	 	 
	 

	 	 	 	 	 	 
	 

	 	 	 	Name:	 	 
	 

	 	 	 	Title:	 	 

	 	 	 	 	 
	TRUSTEE’S CERTIFICATE OF AUTHENTICATION	 	 
	 
	 	 	 	 
	U.S. Bank National Association, as Trustee,
certifies that this is one of the Securities
referred to in the Indenture.	 	 
	 
	 	 	 	 
	By:
	 	 	 	 
	 

	 	 	 	 
	 

	 	Authorized Signatory	 	 

A-2

 

TERMS OF SECURITIES

3 3/4% Convertible Senior Notes due 2037

     Delta Petroleum Corporation, a Delaware corporation (such corporation, and its successors and
assigns under the Indenture hereinafter referred to, being herein called the “Company”), issued
these Securities under an Indenture dated as of April 25, 2007 (as it may be amended or
supplemented from time to time in accordance with the terms thereof, the “Indenture”), among the
Company, the Subsidiary Guarantors and the Trustee, to which reference is hereby made for a
description of the rights, limitations of rights, obligations, duties and immunities thereunder of
the Trustee, the Company, the Subsidiary Guarantors and the Holders.

     To Guarantee the due and punctual payment of the principal and interest, if any, on the
Securities and all other amounts payable by the Company under the Indenture and the Securities when
and as the same shall be due and payable, whether at maturity, by acceleration, by redemption, by
repurchase or otherwise, according to the terms of the Securities and the Indenture, the Subsidiary
Guarantors have fully and unconditionally Guaranteed (and future guarantors, together with the
Subsidiary Guarantors, will fully and unconditionally Guarantee), jointly and severally, such
obligations on a senior basis pursuant to the terms of the Indenture.

1) Interest

     The Company promises to pay interest on the principal amount of this Security at the rate of 3
3/4% per annum.

     The Company will pay interest semiannually on May 1 and November 1 of each year commencing
November 1, 2007. Interest on the Securities will accrue from the most recent date to which
interest has been paid on the Securities or, if no interest has been paid, from [April 25, 2007].
Interest will be computed on the basis of a 360-day year of twelve 30-day months; provided,
however, that for any period other than a full interest period, interest will be computed on the
basis of the actual number of days elapsed during the period and a 360-day year.

2) Method of Payment

     By no later than 11:00 a.m., New York City time, on the date on which any principal of or
interest, on any Security is due and payable, the Company shall deposit with the Paying Agent money
sufficient to pay such amount. The Company will pay principal and interest in money of the United
States that at the time of payment is legal tender for payment of public and private debts.

     Payments in respect of Securities represented by a Global Security (including principal and
interest) will be made by wire transfer of immediately available funds to the accounts specified by
The Depository Trust Company. The Company will pay principal of Definitive Securities at the
office or agency designated by the Company for such purpose. Interest on

A-3

 

Definitive Securities will be payable (i) to Holders having an aggregate principal amount of
$5,000,000 or less, by check mailed to the Holders of these Securities and (ii) to Holders having
an aggregate principal amount of more than $5,000,000, either by check mailed to each Holder or,
upon application by a Holder to the Registrar not later than the relevant record date, by wire
transfer in immediately available funds to that Holder’s account within the United States, which
application shall remain in effect until the Holder notifies, in writing, the Registrar to the
contrary.

3) Redemption

     No sinking fund is provided for the Securities. Subject to certain conditions specified in
the Indenture, on or after May 6, 2012, the Securities will be redeemable, at the option of the
Company, in whole at any time or in part from time to time, at a Redemption Price specified in the
Indenture.

	4)	 	Purchase at the Option of the Holder Upon a Fundamental Change; Purchase By the Company
at the Option of the Holder 

	 	a)	 	If a Fundamental Change shall occur at any time, each Holder shall have the right, at
such Holder’s option and subject to the terms and conditions of the Indenture, to require
the Company to purchase all or a portion of its Securities at a Fundamental Change Purchase
Price specified in the Indenture.
	 
	 	b)	 	Subject to the terms and conditions of the Indenture, a Holder shall have the option to
require the Company to purchase all or a portion of its Securities held by such Holder on
each of May 1, 2012, May 1, 2017, May 1, 2022, May 1, 2027 and May 1, 2032, at a Purchase
Price specified in the Indenture.

5) Conversion

     Subject to the conditions and procedures set forth in the Indenture, a Holder shall have the
right, at its option, at any time following the Issue Date of the Securities through prior to 5:00
p.m., New York City time, on the Business Day immediately preceding Stated Maturity, to convert the
principal amount hereof or any portion of such principal amount which is $1,000 or an integral
multiple thereof, into, subject to Section 12.02 of the Indenture, into shares of Common Stock at
the initial Conversion Rate is 32.9598 shares of Common Stock per $1,000 principal amount of
Securities, subject to adjustment in certain events described in the Indenture. Upon the
conversion of a Security, the Company will have the option to deliver shares of Common Stock, cash
or a combination of shares of Common Stock and cash for the Securities surrendered, as set forth in
the Indenture. No fractional shares will be issued upon any conversion, but an adjustment and
payment in cash will be made, as provided in the Indenture, in respect of any fraction of a share
which would otherwise be issuable upon surrender of any Securities for conversion. The Trustee
will initially act as Conversion Agent.

A-4

 

     A Holder may convert a portion of the Securities only if the principal amount of such portion
is $1,000 or a multiple of $1,000. No payment or adjustment shall be made for dividends on the
Common Stock except as provided in the Indenture.

6) Denominations; Transfer; Exchange

     The Securities are in registered form without coupons in denominations of principal amount of
$1,000 and multiples of $1,000. A Holder may transfer or exchange Securities in accordance with
the Indenture. The Registrar may require a Holder, among other things, to furnish appropriate
endorsements or transfer documents and to pay any taxes and fees required by law or permitted by
the Indenture. The Registrar need not register the transfer of or exchange of Securities (i) for a
period of 15 calendar days prior to the mailing of a notice of redemption of Securities selected
for redemption under Article 5 of the Indenture; (ii) so selected for redemption or, if a portion
of any Security is selected for redemption, the portion thereof selected for redemption; or (iii)
surrendered for conversion or, if a portion of any Security is surrendered for conversion, the
portion thereof surrendered for conversion.

7) Persons Deemed Owners

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

8) Unclaimed Money

     If money for the payment of principal or interest remains unclaimed for two years, the Trustee
or Paying Agent shall pay the money back to the Company. After any such payment, Holders entitled
to the money must look only to the Company and not to the Trustee for payment.

9) Amendment, Waiver

     Subject to certain exceptions, the Indenture contains provisions permitting an amendment of
the Indenture or the Securities with the written consent of the Holders of at least a majority in
principal amount of the then outstanding Securities and the waiver of any Event of Default (other
than with respect to nonpayment or in respect of a provision that cannot be amended without the
written consent of each Holder affected) or noncompliance with any provision with the written
consent of the Holders of a majority in principal amount of the then outstanding Securities.

     In addition, the Indenture permits an amendment of the Indenture or the Security without the
consent of any Holder under circumstances specified in the Indenture.

10) Defaults and Remedies

     If an Event of Default specified in the Indenture occurs and is continuing, the Trustee or the
Holders of at least 25% in principal amount of the Securities may declare all the Securities by
notice to the Company to be due and payable immediately. In addition, certain specified Events

A-5

 

of Default will cause the Securities to become immediately due and payable without further
action by the Holders.

     Holders may not enforce the Indenture or the Securities except as provided in the Indenture.
The Trustee may refuse to enforce the Indenture or the Securities unless it receives reasonable
indemnity or security. Subject to certain limitations, Holders of a majority in principal amount
of the Securities may direct the Trustee in its exercise of any trust or power. The Trustee may
withhold from Holders notice of any continuing Default or Event of Default (except a Default or
Event of Default in payment of principal or interest) if it determines that withholding notice is
in their interest.

11) Trustee Dealings with the Company

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

12) No Recourse Against Others

     An incorporator, director, officer, employee, Affiliate or stockholder, of the Company, solely
by reason of this status, shall not have any liability for any obligations of the Company under the
Securities or the Indenture or for any claim based on, in respect of or by reason of such
obligations or their creation. By accepting a Security, each Holder waives and releases all such
liability. The waiver and release are part of the consideration for the issue of the Securities.

13) Authentication

     This Security shall not be valid until an authorized signatory of the Trustee manually
authenticates this Security.

14) Abbreviations

     Customary abbreviations may be used in the name of a Holder or an assignee, such as TEN COM (=
tenants in common), TEN ENT (= tenants by the entirety), JT TEN (= joint tenants with rights of
survivorship and not as tenants in common), CUST (=custodian) and U/G/M/A (= Uniform Gift to Minors
Act).

15) CUSIP Numbers

     Pursuant to a recommendation promulgated by the Committee on Uniform Security Identification
Procedures, the Company has caused CUSIP numbers to be printed on the Securities and has directed
the Trustee to use CUSIP numbers in notices of redemption as a convenience to Holders. No
representation is made as to the accuracy of such numbers either as

A-6

 

printed on the Securities or as contained in any notice of redemption, and reliance may be
placed only on the other identification numbers placed thereon.

16) Governing Law

     This Security shall be governed by, and construed in accordance with, the law of the State of
New York.

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

Delta Petroleum Corporation

370 17th Street, Suite 4300

Denver, CO 80202

Attention: Chief Financial Officer

Fax number: 303-293-0066

A-7

 

ASSIGNMENT FORM

	 
	To assign this Security, fill in the form below:
	I or we assign and transfer this Security to

 

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

 

(Insert assignee’s soc. sec. or tax I.D. No.)

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

 

	 	 	 	 	 	 	 	 	 
	 Date:

	 	 	 	 	 	Your Signature:	 	 
	 

	 	 
	 	 	 	 	 	 

	 	 	 
	Signature Guarantee:
	 	 
	 

	 	 
	 

	 	(Signature must be guaranteed)

 

Sign exactly as your name appears on the other side of this Security.

The signature(s) should be guaranteed by an eligible guarantor institution (banks, stockbrokers,
savings and loan associations and credit unions) with membership in an approved signature guarantee
medallion program, pursuant to S.E.C. Rule 17Ad-15.

 

 

FORM OF CONVERSION NOTICE

To: Delta Petroleum Corporation

     The undersigned registered Holder of this Security hereby exercises the option to convert this
Security, or portion hereof (which is $1,000 principal amount or a multiple thereof) designated
below, for cash and shares of Common Stock of Delta Petroleum Corporation, if any, in accordance
with the terms of the Indenture referred to in this Security, and directs that cash and the shares,
if any, issuable and deliverable upon such conversion, and any Securities representing any
unconverted principal amount hereof, be issued and delivered to the registered Holder hereof unless
a different name has been indicated below. If cash, shares or any portion of this Security not
converted are to be issued in the name of a Person other than the undersigned, the undersigned
shall pay all transfer taxes payable with respect thereto.

     This notice shall be deemed to be an irrevocable exercise of the option to convert this
Security.

	 	 	 
	Dated:
	 	 
	 	 	 
	 
	 	 
	 	 	 
	 

	 	Signature(s)
	 

	 	The signature(s) should be guaranteed by
an eligible guarantor institution (banks,
stockbrokers, savings and loan
associations and credit unions) with
membership in an approved signature
guarantee medallion program, pursuant to
S.E.C. Rule 17Ad-15.
	 
	 	 
	 	 	 
	 

	 	Signature Guarantee
	 
	 	 
	Fill in for registration of
shares if to be delivered, and
Securities if to be issued
other than to and in the name
of registered holder:
	 	 
	 
	 	 
	 	 	 
	(Name)

	 	Principal amount to be converted (if less
than all): $                    
	 
	 	 
	 	 	 
	(Street Address)
	 	 
	 
	 	 
	 	 	 
	(City state and zip code)

	 	Social Security or Other Taxpayer Number
	Please print name and address
	 	 

 

 

FORM OF FUNDAMENTAL CHANGE PURCHASE NOTICE

To: Delta Petroleum Corporation

     The undersigned registered Holder of this Security hereby acknowledges receipt of a notice
from Delta Petroleum Corporation (the “Company”) as to the occurrence of a Fundamental Change with
respect to the Company and requests and instructs the Company to repurchase this Security, or the
portion hereof (which is $1,000 principal amount or a multiple thereof) designated below, in
accordance with the terms of the Indenture referred to in this Security and directs that the check
or Common Stock of the Company, as applicable, in payment for this Security or the portion thereof
and any Securities representing any unrepurchased principal amount hereof, be issued and delivered
to the registered Holder hereof unless a different name has been indicated below. If any portion of
this Security not repurchased is to be issued in the name of a Person other than the undersigned,
the undersigned shall pay all transfer taxes payable with respect thereto.

	 	 	 
	Dated:
	 	 
	 	 	 
	 
	 	 
	 	 	 
	 

	 	Signature(s)
	 

	 	The signature(s) should be guaranteed by
an eligible guarantor institution (banks,
stockbrokers, savings and loan
associations and credit unions) with
membership in an approved signature
guarantee medallion program, pursuant to
S.E.C. Rule 17Ad-15.
	 
	 	 
	 	 	 
	 

	 	Signature Guarantee
	 
	 	 
	Fill in if a check is
to be issued, or Securities are to be issued,
other than to and in the name
of registered holder:
	 
	 	 
	 	 	 
	(Name)

	 	Principal amount to be purchased (if less
than all): $                    
	 
	 	 
	 	 	 
	(Street Address)
	 	 
	 
	 	 
	 	 	 
	(City state and zip code)

	 	Social Security or Other Taxpayer Number
	Please print name and address
	 	 

 

 

FORM OF PURCHASE NOTICE

To: Delta Petroleum Corporation

     The undersigned registered Holder of this Security hereby acknowledges receipt of a notice
from Delta Petroleum Corporation (the “Company”) as to the Holder’s option to require the Company
to repurchase this Security and requests and instructs the Company to repurchase this Security, or
the portion hereof (which is $1,000 principal amount or a multiple thereof) designated below, in
accordance with the terms of the Indenture referred to in this Security and directs that the check
or Common Stock of the Company, as applicable, in payment for this Security or the portion thereof
and any Securities representing any unrepurchased principal amount hereof, be issued and delivered
to the registered Holder hereof unless a different name has been indicated below. If any portion of
this Security not repurchased is to be issued in the name of a Person other than the undersigned,
the undersigned shall pay all transfer taxes payable with respect thereto.

	 	 	 
	Dated:
	 	 
	 	 	 
	 
	 	 
	 	 	 
	 

	 	Signature(s)
	 

	 	The signature(s) should be guaranteed by
an eligible guarantor institution (banks,
stockbrokers, savings and loan
associations and credit unions) with
membership in an approved signature
guarantee medallion program, pursuant to
S.E.C. Rule 17Ad-15.
	 
	 	 
	 	 	 
	 

	 	Signature Guarantee
	 
	 	 
	Fill in if a check is
to be issued, or Securities are to be issued,
other than to and in the name
of registered holder:
	 
	 	 
	 	 	 
	(Name)

	 	Principal amount to be purchased (if less
than all): $                    
	 
	 	 
	 	 	 
	(Street Address)
	 	 
	 
	 	 
	 	 	 
	(City state and zip code)

	 	Social Security or Other Taxpayer Number
	Please print name and address
	 	 

 

 

EXHIBIT B

FORM OF INDENTURE SUPPLEMENT TO ADD SUBSIDIARY GUARANTORS

     This
Supplemental Indenture, dated as of ___ (this “Supplemental Indenture” or
“Guarantee”), among [name of future Subsidiary Guarantor] (the “Additional
Guarantor”), Delta Petroleum Corporation (together with its successors and assigns, the
“Company”), each other then-existing Subsidiary Guarantor under the Indenture referred to
below, and U.S. Bank National Association New York, as Trustee under the Indenture referred to
below.

W I T N E S S E T H:

     WHEREAS, the Company, the Subsidiary Guarantors and the Trustee have heretofore executed and
delivered an Indenture, dated as of April 25, 2007 (as amended, supplemented, waived or otherwise
modified, the “Indenture”), providing for the issuance of 3 3/4% Convertible Senior Notes
due 2037 of the Company (the “Securities”);

     WHEREAS, Section 3.03 of the Indenture provides that the Company is required to cause each
Wholly-Owned Subsidiary to execute and deliver to the Trustee a supplemental indenture pursuant to
which such Subsidiary will unconditionally Guarantee, on a joint and several basis with the other
Subsidiary Guarantors, the Guaranteed Obligations, as provided under Article 10 of the Indenture;
and

     WHEREAS, pursuant to Section 9.01(d) of the Indenture, the Trustee and the Company are
authorized to execute and deliver this Supplemental Indenture to amend the Indenture, without the
consent of any Securityholder;

     NOW, THEREFORE, in consideration of the foregoing and for other good and valuable
consideration, the receipt of which is hereby acknowledged, the Additional Guarantor, the Company,
the other Subsidiary Guarantors and the Trustee mutually covenant and agree for the equal and
ratable benefit of the Holders of the Securities as follows:

ARTICLE I

Definitions

     SECTION 1.1. Defined Terms. As used in this Supplemental Indenture, terms defined in the
Indenture or in the preamble or recital hereto are used herein as therein defined, except that the
term “Holders” in this Guarantee shall refer to the term “Holders” as defined in the Indenture and
the Trustee acting on behalf or for the benefit of such Holders. The words “herein,” “hereof” and
“hereby” and other words of similar import used in this Supplemental Indenture refer to this
Supplemental Indenture as a whole and not to any particular section hereof.

 

 

ARTICLE II

Agreement to be Bound; Subsidiary Guarantee

     SECTION 2.1. Agreement to be Bound. The Additional Guarantor hereby becomes a party to
the Indenture as a Subsidiary Guarantor and as such will have all of the rights and be subject to
all of the obligations and agreements of a Subsidiary Guarantor under the Indenture. The
Additional Guarantor agrees to be bound by all of the provisions of the Indenture applicable to a
Subsidiary Guarantor and to perform all of the obligations and agreements of a Subsidiary Guarantor
under the Indenture.

     SECTION 2.2. Subsidiary Guarantee. The Additional Guarantor fully and unconditionally
Guarantees to each Holder of the Securities and the Trustee the Guaranteed Obligations pursuant to
Article 10 of the Indenture on a senior basis.

ARTICLE III

Miscellaneous

     SECTION 3.1. Notices. All notices and other communications to the Additional Guarantor
shall be given as provided in the Indenture to the Additional Guarantor, at its address set forth
below, with a copy to the Company as provided in the Indenture for notices to the Company.

     SECTION 3.2. Parties. Nothing expressed or mentioned herein is intended or shall be
construed to give any Person, firm or corporation, other than the Holders and the Trustee, any
legal or equitable right, remedy or claim under or in respect of this Supplemental Indenture or the
Indenture or any provision herein or therein contained.

     SECTION 3.3. Governing Law. This Supplemental Indenture shall be governed by, and
construed in accordance with, the law of the State of New York.

     SECTION 3.4. Severability Clause. In case any provision in this Supplemental Indenture
shall be invalid, illegal or unenforceable, the validity, legality and enforceability of the
remaining provisions shall not in any way be affected or impaired thereby and such provision shall
be ineffective only to the extent of such invalidity, illegality or unenforceability.

     SECTION 3.5. Ratification of Indenture; Supplemental Indentures Part of Indenture.
Except as expressly amended hereby, the Indenture is in all respects ratified and confirmed and all
the terms, conditions and provisions thereof shall remain in full force and effect. This
Supplemental Indenture shall form a part of the Indenture for all purposes, and every Holder of
Securities heretofore or hereafter authenticated and delivered shall be bound hereby. The Trustee
makes no representation or warranty as to the validity or sufficiency of this Supplemental
Indenture.

 

 

     SECTION 3.6. Counterparts. The parties hereto may sign one or more copies of this
Supplemental Indenture in counterparts, all of which together shall constitute one and the same
agreement.

     SECTION 3.7. Headings. The headings of the Articles and the sections in this Guarantee
are for convenience of reference only and shall not be deemed to alter or affect the meaning or
interpretation of any provisions hereof.

 

 

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

	 	 	 	 	 	 	 
	 	 	[NEW SUBSIDIARY GUARANTOR],

as a Subsidiary Guarantor	 	 
	 
	 	 	 	 	 	 
	 

	 	By:	 	 	 	 
	 

	 	 	 	 	 	 
	 

	 	 	 	Name:	 	 
	 

	 	 	 	Title:	 	 
	 

	 	 	 	Address:	 	 
	 
	 	 	 	 	 	 
	 	 	DELTA PETROLEUM CORPORATION	 	 
	 
	 	 	 	 	 	 
	 

	 	By:	 	 	 	 
	 

	 	 	 	 	 	 
	 

	 	 	 	Name:	 	 
	 

	 	 	 	Title:	 	 

 

 

	 	 	 	 	 	 	 
	 	 	[PIPER PETROLEUM COMPANY	 	 
	 
	 	 	 	 	 	 
	 

	 	By:	 	 	 	 
	 

	 	 	 	 	 	 
	 

	 	 	 	Name:	 	 
	 

	 	 	 	Title:	 	 
	 
	 	 	 	 	 	 
	 	 	DELTA EXPLORATION COMPANY, INC.	 	 
	 
	 	 	 	 	 	 
	 

	 	By:	 	 	 	 
	 

	 	 	 	 	 	 
	 

	 	 	 	Name:	 	 
	 

	 	 	 	Title:	 	 
	 
	 	 	 	 	 	 
	 	 	CASTLE TEXAS EXPLORATION LIMITED PARTNERSHIP	 	 
	 
	 	 	 	 	 	 
	 

	 	By:	 	 	 	 
	 

	 	 	 	 	 	 
	 

	 	 	 	Name:	 	 
	 

	 	 	 	Title:	 	 
	 
	 	 	 	 	 	 
	 	 	DPCA, LLC	 	 
	 
	 	 	 	 	 	 
	 

	 	By:	 	 	 	 
	 

	 	 	 	 	 	 
	 

	 	 	 	Name:	 	 
	 

	 	 	 	Title:	 	 
	 
	 	 	 	 	 	 
	 	 	DLC, INC.	 	 
	 
	 	 	 	 	 	 
	 

	 	By:	 	 	 	 
	 

	 	 	 	 	 	 
	 

	 	 	 	Name:	 	 
	 

	 	 	 	Title:]	 	 
	 
	 	 	 	 	 	 
	 	 	U.S. BANK NATIONAL ASSOCIATION, as Trustee	 	 
	 
	 	 	 	 	 	 
	 

	 	By:	 	 	 	 
	 

	 	 	 	 	 	 
	 

	 	 	 	Name:	 	 
	 

	 	 	 	Title:

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