Oasis Petroleum Inc. (Form: 8-K, Received: 02/02/2011 17:05:19)

2017 and thereafter

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT
Pursuant to Section 13 or 15(d)
of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): January 28, 2011

OASIS PETROLEUM INC.

(Exact name of registrant as specified in its charter)


Delaware (State or other jurisdiction of incorporation or organization)		001-34776 (Commission File Number)		80-0554627 (I.R.S. Employer Identification No.)


1001 Fannin Street, Suite 1500 Houston, Texas (Address of principal executive offices)		77002 (Zip Code)

Registrant’s telephone number, including area code: ( 281) 404-9500

Not Applicable.
(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):


o		Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)


o		Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)


o		Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))


o		Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))


Item 1.01		Entry into a Material Definitive Agreement.

Purchase Agreement

On January 28, 2011, Oasis Petroleum Inc. (the “Company”) entered into a Purchase Agreement (the “Purchase Agreement”), among the Company, certain subsidiary guarantors named therein (the “Guarantors”) and J.P. Morgan Securities LLC, as representative of the several initial purchasers (the “Initial Purchasers”), pursuant to which the Company agreed to issue and sell to the Initial Purchasers $400,000,000 in aggregate principal amount of the Company’s 7.25% senior unsecured notes due 2019 (the “Notes”). The Notes were sold at par, and resulted in net proceeds to the Company of approximately $390,000,000.

The Purchase Agreement contains customary representations and warranties of the parties and indemnification and contribution provisions under which the Company and the Guarantors, on the one hand, and the Initial Purchasers, on the other, have agreed to indemnify each other against certain liabilities, including liabilities under the Securities Act of 1933, as amended (the “Securities Act”).

A copy of the Purchase Agreement is filed as Exhibit 10.1 to this Form 8-K and is incorporated herein by reference. The description of the Purchase Agreement in this report is a summary and is qualified in its entirety by the terms of the Purchase Agreement.

Indenture

On February 2, 2011, in connection with the issuance of the Notes, the Company entered into an Indenture (the “Base Indenture”), among the Company and U.S. Bank National Association, as trustee (the “Trustee”), as amended and supplemented by the first supplemental indenture among the Company, the Guarantors and the Trustee, dated as of February 2, 2011 (the “Supplemental Indenture”; the Base Indenture, as amended and supplemented by the Supplemental Indenture, the “Indenture”).

On February 2, 2011, the Notes were issued pursuant to the Indenture in a transaction exempt from the registration requirements under the Securities Act. The Notes were resold within the United States only to qualified institutional buyers in reliance on Rule 144A under the Securities Act, and outside the United States only to non-U.S. persons in reliance on Regulation S under the Securities Act.

The Notes will mature on February 1, 2019, and interest is payable on the Notes semi-annually in arrears on each February 1 and August 1, commencing August 1, 2011. The Notes are guaranteed on a senior unsecured basis by the Guarantors.

At any time prior to February 1, 2014, the Company may redeem up to 35% of the Notes at a redemption price of 107.25% of the principal amount, plus accrued and unpaid interest to the redemption date, with the proceeds of certain equity offerings so long as the redemption occurs within 180 days of completing such equity offering and at least 65% of the aggregate principal amount of the Notes remains outstanding after such redemption. Prior to February 1, 2015, the Company may redeem some or all of the notes for cash at a redemption price equal to 100% of their principal amount plus an applicable make-whole premium and accrued and unpaid interest to the redemption date. On and after February 1, 2015, the Company may redeem some or all of the notes at redemption prices (expressed as percentages of principal amount) equal to 103.625% for the twelve-month period beginning on February 1, 2015, 101.813% for the twelve-month period beginning February 1, 2016 and 100.00% beginning on February 1, 2017, plus accrued and unpaid interest to the redemption date.

The Indenture restricts the Company’s ability and the ability of certain of its subsidiaries to: (i) incur additional debt or enter into sale and leaseback transactions; (ii) pay distributions on, redeem or repurchase, equity interests; (iii) make certain investments; (iv) incur liens; (v) enter into transactions with affiliates; (vi) merge or consolidate with another company; and (vii) transfer and sell assets. These covenants are subject to a number of important exceptions and qualifications. If at any time when the Notes are rated investment grade by both Moody’s Investors Service, Inc. and Standard & Poor’s Ratings Services and no Default (as defined in the Indenture) has occurred and is continuing, many of such covenants will terminate and the Company and its subsidiaries will cease to be subject to such covenants.

The Indenture contains customary events of default, including:

	•		default in any payment of interest on any Note when due, continued for 30 days;

	•		default in the payment of principal of or premium, if any, on any Note when due;

	•		failure by the Company to comply with its other obligations under the Indenture, in certain cases subject to notice and grace periods;

	•		payment defaults and accelerations with respect to other indebtedness of the Company and its Restricted Subsidiaries (as defined in the Indenture) in the aggregate principal amount of $10.0 million or more;

	•		certain events of bankruptcy, insolvency or reorganization of the Company or a Significant Subsidiary (as defined in the Indenture) or group of Restricted Subsidiaries that, taken together, would constitute a Significant Subsidiary;

	•		failure by the Company or any Significant Subsidiary or group of Restricted Subsidiaries that, taken together, would constitute a Significant Subsidiary to pay certain final judgments aggregating in excess of $10.0 million within 60 days; and

	•		any guarantee of the Notes by a Guarantor ceases to be in full force and effect, is declared null and void in a judicial proceeding or is denied or disaffirmed by its maker.

Copies of the Base Indenture and the Supplemental Indenture are filed as Exhibits 4.1 and 4.2, respectively, to this Form 8-K and are incorporated herein by reference. The description of the Base Indenture and Supplemental Indenture are summaries and are qualified in their entirety by the terms of the Base Indenture and the Supplemental Indenture.

Registration Rights Agreement

In connection with the issuance and sale of the Notes, the Company and the Guarantors entered into a registration rights agreement (the “Registration Rights Agreement”) with the Initial Purchasers, dated February 2, 2011. Pursuant to the Registration Rights Agreement, the Company and the Guarantors have agreed to file a registration statement with the Securities and Exchange Commission so that holders of the Notes can exchange the Notes for registered notes (the “Exchange Notes”) that have substantially identical terms as the Notes. In addition, the Company and the Guarantors have agreed to exchange the guarantee related to the Notes for a registered guarantee having substantially the same terms as the original guarantee. The Company and the Guarantors will use commercially reasonable efforts to cause the exchange to be completed within 360 days after the issuance of the Notes. The Company and the Guarantors are required to pay additional interest if they fail to comply with their obligations to register the Notes within the specified time periods.

A copy of the Registration Rights Agreement is filed as Exhibit 4.3 to this Form 8-K and is incorporated herein by reference. The description of the Registration Rights Agreement in this report is a summary and is qualified in its entirety by the terms of the Registration Rights Agreement.


Item 2.03		Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.

The information included in Item 1.01 of this Current Report on Form 8-K is incorporated by reference into this Item 2.03 of this Current Report on Form 8-K.


Item 9.01		Financial Statements and Exhibits.

(d) Exhibits .


Exhibit No.		Description of Exhibit
	4.1	Indenture dated as of February 2, 2011 among the Company and U.S. Bank National Association, as trustee.
	4.2	Supplemental Indenture dated as of February 2, 2011 among the Company, the Guarantors and U.S. Bank National Association, as trustee.
	4.3	Registration Rights Agreement dated as of February 2, 2011 among the Company, the Guarantors and J.P. Morgan Securities LLC, as representative of the several initial purchasers.
	10.1	Purchase Agreement dated as of January 28, 2011 among the Company, the Guarantors and J.P. Morgan Securities LLC, as representative of the several initial purchasers.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.


	OASIS PETROLEUM INC. (Registrant)
Date: February 2, 2011	By:	/s/ Thomas B. Nusz
		Thomas B. Nusz
		Chairman, President and Chief Executive Officer

EXHIBIT INDEX


Exhibit No.		Description of Exhibit
	4.1	Indenture dated as of February 2, 2011 among the Company and U.S. Bank National Association, as trustee.
	4.2	Supplemental Indenture dated as of February 2, 2011 among the Company, the Guarantors and U.S. Bank National Association, as trustee.
	4.3	Registration Rights Agreement dated as of February 2, 2011 among the Company, the Guarantors and J.P. Morgan Securities LLC, as representative of the several initial purchasers.
	10.1	Purchase Agreement dated as of January 28, 2011 among the Company, the Guarantors and J.P. Morgan Securities LLC, as representative of the several initial purchasers.

Exhibit 4.1

OASIS PETROLEUM INC.

AND

U.S. BANK NATIONAL ASSOCIATION

Trustee

INDENTURE

DATED AS OF FEBRUARY 2, 2011

SENIOR DEBT SECURITIES

OASIS PETROLEUM INC.
RECONCILIATION AND TIE BETWEEN TRUST INDENTURE ACT OF 1939, AS
AMENDED, AND INDENTURE, DATED AS OF FEBRUARY 2, 2011


TRUST INDENTURE ACT SECTION		INDENTURE SECTION

Section 310(a)(1)		6.9
(a)(2)		6.9
(a)(3)		Not Applicable
(a)(4)		Not Applicable
(a)(5)		6.9
(b)		6.8

Section 311		6.13

Section 312(a)		7.1, 7.2(a)
(b)		7.2(b)
(c)		7.2(c)

Section 313(a)		7.3
(b)		*
(c)		*
(d)		7.3

Section 314(a)		7.4
(a)(4)		10.5
(b)		Not Applicable
(c)(1)		1.3
(c)(2)		1.3
(c)(3)		Not Applicable
(d)		Not Applicable
(e)		1.3

Section 315(a)		6.1(a)
(b)		6.2
(c)		6.1(b)
(d)		6.1(c)
(d)(1)		6.1(a)(1)
(d)(2)		6.1(c)(2)
(d)(3)		6.1(c)(3)
(e)		5.14

Section 316(a)		1.1, 1.2
(a)(1)(A)		5.2, 5.12
(a)(1)(B)		5.13
(a)(2)		Not Applicable
(b)		5.8
(c)		1.5(f)


TRUST INDENTURE ACT SECTION		INDENTURE SECTION

Section 317(a)(1)		5.3
(a)(2)		5.4
(b)		10.3

Section 318(a)		1.8

NOTE: This reconciliation and tie shall not, for any purpose, be deemed to be a part of the Indenture.


*		Deemed included pursuant to Section 318(c) of the Trust Indenture Act

TABLE OF CONTENTS


		Page

ARTICLE ONE DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION			1
Section 1.1.	Definitions		1
Section 1.2.	Rules of Construction; Incorporation by Reference of Trust Indenture Act		8
Section 1.3.	Compliance Certificates and Opinions		10
Section 1.4.	Form of Documents Delivered to Trustee		10
Section 1.5.	Acts of Holders; Record Dates		11
Section 1.6.	Notices, Etc., to Trustee, Company and Guarantors		12
Section 1.7.	Notice to Holders; Waiver		13
Section 1.8.	Conflict with Trust Indenture Act		13
Section 1.9.	Effect of Headings and Table of Contents		14
Section 1.10.	Successors and Assigns		14
Section 1.11.	Separability Clause		14
Section 1.12.	Benefits of Indenture		14
Section 1.13.	Force Majeure		14
Section 1.14.	Waiver of Jury Trial		14
Section 1.15.	Governing Law		15
Section 1.16.	Legal Holidays		15
Section 1.17.	Securities in a Composite Currency, Currency Unit or Foreign Currency		15
Section 1.18.	Payment in Required Currency; Judgment Currency		16
Section 1.19.	Language of Notices, Etc.		16
Section 1.20.	No Personal Liability of Directors, Officers, Employees and Stockholders		16
ARTICLE TWO SECURITY FORMS			17
Section 2.1.	Forms Generally		17
Section 2.2.	Form of Face of Security		17
Section 2.3.	Form of Reverse of Security		20
Section 2.4.	Global Securities		25
Section 2.5.	Form of Trustee’s Certificate of Authentication		26
ARTICLE THREE THE SECURITIES			26
Section 3.1.	Amount Unlimited; Issuable in Series		26
Section 3.2.	Denominations		29
Section 3.3.	Execution, Authentication, Delivery and Dating		29
Section 3.4.	Temporary Securities		31
Section 3.5.	Registration, Registration of Transfer and Exchange		31
Section 3.6.	Mutilated, Destroyed, Lost and Stolen Securities		34
Section 3.7.	Payment of Interest; Interest Rights Preserved		35
Section 3.8.	Persons Deemed Owners		36
Section 3.9.	Cancellation		36
Section 3.10.	Computation of Interest		37
Section 3.11.	CUSIP or CINS Numbers		37


		Page

ARTICLE FOUR SATISFACTION AND DISCHARGE			37
Section 4.1.	Satisfaction and Discharge of Indenture		37
Section 4.2.	Application of Trust Money		38
ARTICLE FIVE REMEDIES			39
Section 5.1.	Events of Default		39
Section 5.2.	Acceleration of Maturity; Rescission and Annulment		40
Section 5.3.	Collection of Indebtedness and Suits for Enforcement by Trustee		41
Section 5.4.	Trustee May File Proofs of Claim		42
Section 5.5.	Trustee May Enforce Claims Without Possession of Securities		42
Section 5.6.	Application of Money Collected		43
Section 5.7.	Limitation on Suits		43
Section 5.8.	Unconditional Right of Holders to Receive Principal, Premium and Interest		44
Section 5.9.	Restoration of Rights and Remedies		44
Section 5.10.	Rights and Remedies Cumulative		44
Section 5.11.	Delay or Omission Not Waiver		44
Section 5.12.	Control by Holders		44
Section 5.13.	Waiver of Past Defaults		45
Section 5.14.	Undertaking for Costs		45
Section 5.15.	Waiver of Stay, Extension or Usury Laws		46
ARTICLE SIX THE TRUSTEE			46
Section 6.1.	Certain Duties and Responsibilities		46
Section 6.2.	Notice of Defaults		47
Section 6.3.	Certain Rights of Trustee		47
Section 6.4.	Not Responsible for Recitals or Issuance of Securities		49
Section 6.5.	May Hold Securities		49
Section 6.6.	Money Held in Trust		49
Section 6.7.	Compensation and Reimbursement		50
Section 6.8.	Disqualification; Conflicting Interests		51
Section 6.9.	Corporate Trustee Required; Eligibility		51
Section 6.10.	Resignation and Removal; Appointment of Successor		51
Section 6.11.	Acceptance of Appointment by Successor		53
Section 6.12.	Merger, Conversion, Consolidation or Succession to Business		54
Section 6.13.	Preferential Collection of Claims Against Company		54
Section 6.14.	Appointment of Authenticating Agent		54
ARTICLE SEVEN HOLDERS’ LISTS AND REPORTS BY TRUSTEE AND COMPANY			56
Section 7.1.	Company to Furnish Trustee Names and Addresses of Holders		56
Section 7.2.	Preservation of Information; Communications to Holders		56
Section 7.3.	Reports by Trustee		57
Section 7.4.	Reports by Company		58
ARTICLE EIGHT CONSOLIDATION, AMALGAMATION, MERGER AND SALE			58
Section 8.1.	Company May Consolidate, Etc., Only on Certain Terms		58
Section 8.2.	Successor Substituted		59
ARTICLE NINE AMENDMENT, SUPPLEMENT AND WAIVER			60
Section 9.1.	Without Consent of Holders		60
Section 9.2.	With Consent of Holders		61


		Page

Section 9.3.	Execution of Supplemental Indentures		63
Section 9.4.	Effect of Supplemental Indentures		63
Section 9.5.	Conformity with Trust Indenture Act		64
Section 9.6.	Reference in Securities to Supplemental Indentures		64
Section 9.7.	Effect of Consents		64
ARTICLE TEN COVENANTS			64
Section 10.1.	Payment of Principal, Premium and Interest		64
Section 10.2.	Maintenance of Office or Agency		64
Section 10.3.	Money for Securities Payments to Be Held in Trust		65
Section 10.4.	Existence		66
Section 10.5.	Statement by Officers as to Default		66
ARTICLE ELEVEN REDEMPTION OF SECURITIES			67
Section 11.1.	Applicability of Article		67
Section 11.2.	Election to Redeem; Notice to Trustee		67
Section 11.3.	Selection by Trustee of Securities to Be Redeemed		67
Section 11.4.	Notice of Redemption		68
Section 11.5.	Deposit of Redemption Price		69
Section 11.6.	Securities Payable on Redemption Date		69
Section 11.7.	Securities Redeemed in Part		69
ARTICLE TWELVE SINKING FUNDS			69
Section 12.1.	Applicability of Article		69
Section 12.2.	Satisfaction of Sinking Fund Payments with Securities		70
Section 12.3.	Redemption of Securities for Sinking Fund		70
ARTICLE THIRTEEN DEFEASANCE			70
Section 13.1.	Option to Effect Legal Defeasance or Covenant Defeasance		70
Section 13.2.	Legal Defeasance and Discharge		71
Section 13.3.	Covenant Defeasance		71
Section 13.4.	Conditions to Legal or Covenant Defeasance		72
Section 13.5.	Deposited Money and Government Securities to be Held in Trust, Other Miscellaneous Provisions		73
Section 13.6.	Reinstatement		74
ARTICLE FOURTEEN GUARANTEE OF SECURITIES			74
Section 14.1.	Securities Guarantee		74
Section 14.2.	Limitation on Guarantor Liability		75
Section 14.3.	Execution and Delivery of Securities Guarantee Notation		76

NOTE: This table of contents shall not, for any purpose, be deemed to be a part of the Indenture.

iii

PARTIES

THIS INDENTURE, dated as of February 2, 2011, is between OASIS PETROLEUM INC. , a corporation duly organized and existing under the laws of the State of Delaware (herein called the “ Company ”), and U.S. BANK NATIONAL ASSOCIATION , as trustee (the “ Trustee ”).

RECITALS OF THE COMPANY:

The Company has duly authorized the execution and delivery of this Indenture to provide for the issuance from time to time of its unsecured senior debentures, notes or other evidences of indebtedness (herein called the “ Securities ”), which may but are not required to be guaranteed by the Guarantors, to be issued in one or more series as provided in this Indenture.

All things necessary to make this Indenture a valid agreement of the Company and of the Guarantors (if applicable), in accordance with its terms, have been done.

This Indenture is subject to the provisions of the Trust Indenture Act that are required to be a part of this Indenture and, to the extent applicable, shall be governed by such provisions.

NOW, THEREFORE, THIS INDENTURE WITNESSETH:

For and in consideration of the premises and the purchase of the Securities by the Holders thereof, it is mutually covenanted and agreed, for the equal and proportionate benefit of all Holders of the Securities or of series thereof, as follows:

ARTICLE ONE
DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION

Section 1.1. Definitions .

For all purposes of this Indenture, except as otherwise expressly provided or unless the context otherwise requires:

“ Act, ” when used with respect to any Holder, has the meaning specified in Section 1.5.

“ Additional Defeasible Provision ” means a covenant or other provision that is (a) made part of this Indenture pursuant to a supplemental indenture hereto, a Board Resolution or an Officers’ Certificate delivered pursuant to Section 3.1, and (b) pursuant to the terms set forth in such supplemental indenture, Board Resolution or Officers’ Certificate, made subject to the provisions of Article Thirteen.

“ Affiliate ” of any specified Person means any other Person directly or indirectly controlling or controlled by or under direct or indirect common control with such specified Person. For purposes of this definition, “ control, ” as used with respect to any Person, means the possession, directly or indirectly, of the power to direct or cause the direction of the management or policies of such Person, whether through the ownership of voting securities, by agreement or

otherwise. For purposes of this definition, the terms “ controlling ,” “ controlled by ” and “ under common control with ” have correlative meanings.

“ Authenticating Agent ” means any Person authorized by the Trustee to act on behalf of the Trustee to authenticate Securities.

“ Bankruptcy Law ” means any applicable Federal or State bankruptcy, insolvency, reorganization or other similar law.

“ Board of Directors ” means:

(1) with respect to a corporation, the board of directors of the corporation or any committee thereof duly authorized to act on behalf of such board;

(2) with respect to a partnership, the board of directors of the general partner of the partnership;

(3) with respect to a limited liability company, the managers or managing member or members of such limited liability company (as applicable) or any duly authorized committee of managers or managing members (as applicable) thereof; and

(4) with respect to any other Person, the board of directors or duly authorized committee of such Person serving a similar function.

“ Board Resolution ” means a copy of a resolution certified by the Secretary or an Assistant Secretary of the Company, the principal financial officer of the Company or a Guarantor, any other authorized officer of the Company or a Guarantor, or a person duly authorized by any of them, in each case as applicable, to have been duly adopted by the Board of Directors and to be in full force and effect on the date of such certification, and delivered to the Trustee. Where any provision of this Indenture refers to action to be taken pursuant to a Board Resolution (including the establishment of any series of the Securities and the forms and terms thereof), such action may be taken by any committee, officer or employee of the Company or a Guarantor, as applicable, authorized to take such action by the Board of Directors as evidenced by a Board Resolution.

“ Business Day, ” when used with respect to any Place of Payment or other location, means, except as otherwise provided as contemplated by Section 3.1 with respect to any series of Securities, each Monday, Tuesday, Wednesday, Thursday and Friday that is not a day on which banking institutions in that Place of Payment or other location are authorized or obligated by law, executive order or regulation to close.

“ Capital Stock ” means:

(1) in the case of a corporation, corporate stock;

(2) in the case of an association or business entity, any and all shares, interests, participations, rights or other equivalents (however designated) of corporate stock;

(3) in the case of a partnership or limited liability company, partnership interests (whether general or limited) or membership interests; and

(4) any other interest or participation that confers on a Person the right to receive a share of the profits and losses of, or distributions of assets of, the issuing Person, but excluding from all of the foregoing any debt securities convertible into Capital Stock, regardless of whether such debt securities include any right of participation with Capital Stock.

“ CINS ” means CUSIP International Numbering System.

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

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

“ Company Request ” or “ Company Order ” means, in the case of the Company, a written request or order signed in the name of the Company by its Chairman of the Board, its Chief Executive Officer, its President, any of its Vice Presidents or any other duly authorized officer of the Company or any person duly authorized by any of them, and delivered to the Trustee and, in the case of a Guarantor, a written request or order signed in the name of such Guarantor by its Chairman of the Board, its Chief Executive Officer, its President, any of its Vice Presidents or any other duly authorized officer of such Guarantor or any person duly authorized by any of them, and delivered to the Trustee.

“ Corporate Trust Office ” means the office of the Trustee at which at any particular time its corporate trust business in relation to this Indenture shall be principally administered, which office at the date of the execution of this instrument is located at 5555 San Felipe, Suite 1150, Houston, Texas 77056, Attention: Corporate Trust Services, or such other address as the Trustee may designate from time to time by notice to the Company, or the principal corporate trust office of any successor Trustee (or such other address as such successor Trustee may designate from time to time by notice to the Company).

“ Covenant Defeasance ” has the meaning specified in Section 13.3.

“ CUSIP ” means the Committee on Uniform Securities Identification Procedures.

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

“ Debt ” means any obligation created or assumed by any Person for the repayment of money borrowed and any purchase money obligation created or assumed by such Person and any guarantee of the foregoing.

“ Default ” means, with respect to a series of Securities, any event that is, or after notice or passage of time or both would be, an Event of Default.

“ Defaulted Interest ” has the meaning specified in Section 3.7.

“ Definitive Security ” means a security other than a Global Security or a temporary Security.

“ Depositary ” means, with respect to the Securities of any series issuable or issued in whole or in part in the form of one or more Global Securities, a clearing agency registered under the Exchange Act that is designated to act as Depositary for such Securities as contemplated by Section 3.1, until a successor Depositary shall have become such pursuant to the applicable provisions of this Indenture, and thereafter shall mean or include each Person which is a Depositary hereunder, and if at any time there is more than one such Person, shall be a collective reference to such Persons.

“ Dollar ” or “ $ ” means the coin or currency of the United States of America, which at the time of payment is legal tender for the payment of public and private debts.

“ Event of Default ” has the meaning specified in Section 5.1.

“ Exchange Act ” means the Securities Exchange Act of 1934, as amended.

“ Foreign Currency ” means a currency used by the government of a country other than the United States of America.

“ GAAP ” means generally accepted accounting principles in the United States, which are in effect from time to time.

“ Global Security ” means a Security in global form that evidences all or part of a series of Securities and is authenticated and delivered to, and registered in the name of, the Depositary for the Securities of such series or its nominee.

“ Government Securities ” means direct obligations of, or obligations guaranteed by, the United States of America, and the payment for which the United States pledges its full faith and credit.

“ Guarantor ” means each Person that becomes a guarantor of any Securities pursuant to the applicable provisions of this Indenture (including any provisions that become a part of this Indenture pursuant to any supplemental indenture).

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

“ Indenture ” means this instrument as originally executed or as it may from time to time be supplemented or amended by one or more indentures supplemental hereto entered into pursuant to the applicable provisions hereof, including, for all purposes of this instrument, and any such supplemental indenture, the provisions of the Trust Indenture Act that are deemed to be part of and govern this instrument and any such supplemental indenture, respectively. The term “Indenture” also shall include the terms of particular series of Securities established as contemplated by Section 3.1.

“ Interest Payment Date, ” when used with respect to any Security, means the Stated Maturity of an installment of interest on such Security.

“ Issue Date, ” with respect to any series of Securities, means the first date on which such Securities are issued under this Indenture or any supplement thereto.

“ Judgment Currency ” has the meaning specified in Section 1.18.

“ Legal Defeasance ” has the meaning specified in Section 13.2.

“ Mandatory Sinking Fund Payment ” has the meaning specified in Section 12.1.

“ Market Exchange Rate ” has the meaning specified in Section 1.17.

“ Maturity, ” when used with respect to any Security, means the date on which the principal of such Security or an installment of principal becomes due and payable as therein or herein provided, whether at the Stated Maturity or by declaration of acceleration, call for redemption or otherwise.

“ Notice of Default ” with respect to Securities of any series, means a written notice by registered or certified mail, to the Company by the Trustee or to the Company and the Trustee by the Holders of at least 25% in aggregate principal amount of the Outstanding Securities of that series, specifying a default or breach hereunder and requiring it to be remedied and stating that such notice is a “Notice of Default” hereunder.

“ Officer ” means, in the case of the Company, the Chairman of the Board, the Chief Executive Officer, the President, the Chief Financial Officer (or, in the absence of any Chief Financial Officer, the principal financial officer), any Vice President, the Treasurer or the Secretary of the Company and, in the case of any Guarantor, the Chairman of the Board, the Chief Executive Officer, the President, the Chief Financial Officer, (or, in the absence of any Chief Financial Officer, the principal financial officer), any Vice President, the Treasurer or the Secretary of such Guarantor.

“ Officers’ Certificate ” means, in the case of the Company, a certificate signed by two Officers or by an Officer and either an Assistant Treasurer or an Assistant Secretary of the Company and, in the case of any Guarantor, a certificate signed by two Officers or by an Officer and either an Assistant Treasurer or an Assistant Secretary of such Guarantor.

“ Opinion of Counsel ” means a written opinion of legal counsel, who may be an employee of or counsel for the Company or a Guarantor, as the case may be, and who shall be reasonably acceptable to the Trustee.

“ Optional Sinking Fund Payment ” has the meaning specified in Section 12.1.

“ Original Issue Discount Security ” means any Security which provides for an amount less than the principal amount thereof to be due and payable upon a declaration of acceleration of the Maturity thereof pursuant to Section 5.2. “ Interest, ” when used with respect to an Original

Issue Discount Security which by its terms bears interest only after Maturity, means interest payable after Maturity.

“ Outstanding, ” when used with respect to Securities, means, as of the date of determination, all Securities theretofore authenticated and delivered under this Indenture, except:

(a) Securities theretofore canceled by the Trustee or delivered to the Trustee for cancellation;

(b) Securities for whose payment or redemption money in the necessary amount has been theretofore deposited with the Trustee or any Paying Agent (other than the Company) in trust or set aside and segregated in trust by the Company (if the Company shall act as its own Paying Agent) for the Holders of such Securities; provided , however , that, if such Securities are to be redeemed, notice of such redemption has been duly given pursuant to this Indenture or provision therefor satisfactory to the Trustee has been made;

(c) Securities that have been paid pursuant to Section 3.6 or in exchange for, or in lieu of which, other Securities have been authenticated and delivered pursuant to this Indenture, other than any such Securities in respect of which there shall have been presented to the Trustee proof satisfactory to it that such Securities are held by a bona fide purchaser in whose hands such Securities are valid obligations of the Company; and

(d) Securities, except to the extent provided in Section 13.2 and Section 13.3, with respect to which the Company has effected Legal Defeasance or Covenant Defeasance as provided in Article Thirteen, which Legal Defeasance or Covenant Defeasance then continues in effect;

provided , however , that in determining whether the Holders of the requisite principal amount of the Outstanding Securities have given any request, demand, authorization, direction, notice, consent or waiver hereunder, (i) the principal amount of an Original Issue Discount Security that shall be deemed to be Outstanding shall be the amount of the principal thereof that would be due and payable as of the date of such determination upon acceleration of the Maturity thereof on such date pursuant to Section 5.2, (ii) the principal amount of a Security denominated in one or more currencies or currency units other than U.S. dollars shall be the U.S. dollar equivalent of such currencies or currency units, determined in the manner provided as contemplated by Section 3.1 on the date of original issuance of such Security or by Section 1.17, if not otherwise so provided pursuant to Section 3.1, of the principal amount (or, in the case of an Original Issue Discount Security, the U.S. dollar equivalent (as so determined) on the date of original issuance of such Security of the amount determined as provided in clause (i) above) of such Security, and (iii) Securities owned by the Company, any Guarantor or any other obligor upon the Securities or any Affiliate of the Company or of such other obligor shall be disregarded and deemed not to be Outstanding, except that, in determining whether the Trustee shall be protected in relying upon any such request, demand, authorization, direction, notice, consent or waiver, only Securities which a Responsible Officer of the Trustee actually knows to be so owned shall be so disregarded. Securities so owned as described in clause (iii) of the immediately preceding sentence which have been pledged in good faith may be regarded as Outstanding if the pledgee

establishes to the satisfaction of the Trustee the pledgee’s right to act with respect to such Securities and that the pledgee is not the Company, a Guarantor or any other obligor upon the Securities or any Affiliate of the Company or of such other obligor.

“ Paying Agent ” means any Person authorized by the Company to pay the principal of and any premium or interest on any Securities on behalf of the Company.

“ Periodic Offering ” means an offering of Securities of a series from time to time, the specific terms of which Securities, including, without limitation, the rate or rates of interest or formula for determining the rate or rates of interest thereon, if any, the Stated Maturity or Stated Maturities thereof, the original issue date or dates thereof, the redemption provisions, if any, with respect thereto, and any other terms specified as contemplated by Section 3.1 with respect thereto, are to be determined by the Company upon the issuance of such Securities.

“ 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 thereof or any other entity.

“ Place of Payment, ” when used with respect to the Securities of any series, means, unless otherwise specifically provided for with respect to such series as contemplated by Section 3.1, the office or agency of the Company and such other place or places where, subject to the provisions of Section 10.2, the principal of and any premium and interest on the Securities of that series are payable as contemplated by Section 3.1.

“ Predecessor Security ” of any particular Security means every previous Security evidencing all or a portion of the same debt as that evidenced by such particular Security; and, for the purposes of this definition, any Security authenticated and delivered under Section 3.6 in exchange for or in lieu of a mutilated, destroyed, lost or stolen Security shall be deemed to evidence the same debt as the mutilated, destroyed, lost or stolen Security.

“ Redemption Date, ” when used with respect to any Security to be redeemed, means the date fixed for such redemption by or pursuant to this Indenture.

“ Redemption Price, ” when used with respect to any Security to be redeemed, means the price at which it is to be redeemed pursuant to this Indenture.

“ Regular Record Date ” for the interest payable on any Interest Payment Date on the Securities of any series means the date specified for that purpose as contemplated by Section 3.1.

“ Required Currency ” has the meaning specified in Section 1.18.

“ Responsible Officer ” means, with respect to the Trustee, any officer assigned to the Corporate Trust Division — Corporate Finance Unit (or any successor division or unit) of the Trustee located at the Corporate Trust Office of the Trustee, who shall have direct responsibility for the administration of this Indenture, and for the purposes of Section 6.1(c)(ii) shall also include any other officer of the Trustee to whom any corporate trust matter is referred because of such officer’s knowledge of and familiarity with the particular subject.

“ SEC ” means the Securities and Exchange Commission.

“ Securities ” has the meaning stated in the first recital of this Indenture and more particularly means any Securities authenticated and delivered under this Indenture.

“ Securities Act ” means the Securities Act of 1933, as amended.

“ Securities Guarantee ” means each guarantee of the obligations of the Company under this Indenture and the Securities by a Guarantor in accordance with the provisions hereof.

“ Security Register ” and “ Security Registrar ” have the respective meanings specified in Section 3.5.

“ Special Record Date ” for the payment of any Defaulted Interest means a date fixed by the Trustee pursuant to Section 3.7.

“ Stated Maturity, ” when used with respect to any Security or any installment of principal thereof or interest thereon, means the date specified in such Security as the fixed date on which the principal of such Security or such installment of principal or interest is due and payable.

“ Trust Indenture Act ” means the Trust Indenture Act of 1939, as amended, as in force at the date as of which this instrument was executed, except as provided in Section 9.5; provided , however , that if the Trust Indenture Act of 1939 is amended after such date, “Trust Indenture Act” means, to the extent required by any such amendment, the Trust Indenture Act of 1939 as so amended.

“ Trustee ” means the Person named as the “Trustee” in the first paragraph of this instrument until a successor Trustee shall have become such pursuant to the applicable provisions of this Indenture, and thereafter “Trustee” shall mean or include each Person who is then a Trustee hereunder, and if at any time there is more than one such Person, “Trustee” as used with respect to the Securities of any series shall mean the Trustee with respect to Securities of that series. The term “ corporation, ” when used in reference to the Trustee or any prospective Trustee, shall include any corporation, company, association, partnership, limited partnership, limited liability company, joint-stock company and trust, in each case, satisfying the requirements of Section 310(a)(1) of the Trust Indenture Act.

“ U.S. Person ” shall have the meaning assigned to such term in Section 7701(a)(30) of the Code.

“ Vice President, ” when used with respect to the Company, a Guarantor or the Trustee, means any vice president, regardless of whether designated by a number or a word or words added before or after the title “vice president.”

Section 1.2. Rules of Construction; Incorporation by Reference of Trust Indenture Act .

(a) The terms defined in this Article have the meanings assigned to them in this Article and include the plural as well as the singular;

(b) all terms used in this Indenture that are defined in the Trust Indenture Act, defined by a Trust Indenture Act reference to another statute or defined by an SEC rule under the Trust Indenture Act have the meanings so assigned to them;

(d) the words “ herein, ” “ hereof ” and “ hereunder ” and other words of similar import refer to this Indenture as a whole and not to any particular Article, Section or other subdivision;

(e) “ or ” is not exclusive;

(f) “ will ” shall be interpreted to express a command;

(g) provisions apply to successive events and transactions;

(h) references to sections of or rules under the Securities Act will be deemed to include substitute, replacement of successor sections or rules adopted by the SEC from time to time;

(i) the words “ Article ” and “ Section ” refer to an Article and Section, respectively, of this Indenture; and

(j) the word “ includes ” and its derivatives means “includes, but is not limited to” and corresponding derivative definitions.

Certain terms, used principally in Article Six, are defined in that Article.

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

“ 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 Securities means the Company, any Guarantor (if applicable) or any other obligor on the Securities.

All other terms used in this Indenture that are defined by the Trust Indenture Act, defined by a Trust Indenture Act reference to another statute or defined by an SEC rule under the Trust Indenture Act have the meanings so assigned to them.

Section 1.3. Compliance Certificates and Opinions .

Upon any application or request by the Company or a Guarantor to the Trustee to take any action under any provision of this Indenture, the Company or such Guarantor, as the case may be, shall furnish to the Trustee an Officers’ Certificate stating that all conditions precedent, if any, provided for in this Indenture relating to the proposed action have been complied with and an Opinion of Counsel stating that in the opinion of such counsel all such conditions precedent, if any, have been complied with, except that in the case of any such application or request as to which the furnishing of such documents is specifically required by any provision of this Indenture relating to such particular application or request, no additional certificate or opinion need be furnished except as required under Section 314(c) of the Trust Indenture Act.

Every certificate or opinion with respect to compliance with a condition or covenant provided for in this Indenture (except for certificates provided for in Section 10.5) shall include:

(a) a statement that each individual signing such certificate or opinion has read such covenant or condition and the definitions herein relating thereto;

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

(c) a statement that, in the opinion of each such individual, he has made such examination or investigation as is necessary to enable him to express an informed opinion as to whether such covenant or condition has been complied with; and

(d) a statement as to whether, in the opinion of each such individual, such condition or covenant has been complied with.

Section 1.4. Form of Documents Delivered to Trustee .

In any case where several matters are required to be certified by, or covered by an opinion of, any specified Person, it is not necessary that all such matters be certified by, or covered by the opinion of, only one such Person, or that they be so certified or covered by only one document, but one such Person may certify or give an opinion with respect to some matters and one or more other such Persons as to other matters, and any such Person may certify or give an opinion as to such matters in one or several documents.

Any certificate or opinion of an Officer of the Company or a Guarantor may be based, insofar as it relates to legal matters, upon a certificate or opinion of, or representations by, counsel, unless such Officer knows or, in the exercise of reasonable care, should know that the certificate or opinion or representations with respect to the matters upon which his certificate or opinion is based are erroneous. Any such certificate or opinion of counsel may be based, insofar as it relates to factual matters, upon a certificate or opinion of, or representations by, an Officer or Officers of the Company or a Guarantor, as the case may be, stating that the information with respect to such factual matters is in the possession of the Company or such Guarantor, as the case may be, unless such counsel knows that the certificate or opinion or representations with respect to such matters are erroneous.

Where any Person is required to make, give or execute two or more applications, requests, consents, certificates, statements, opinions or other instruments under this Indenture, they may, but need not, be consolidated and form one instrument.

Section 1.5. Acts of Holders; Record Dates .

(a) Any request, demand, authorization, direction, notice, consent, waiver or other action provided by this Indenture to be given or taken by Holders may be embodied in and evidenced by one or more instruments of substantially similar tenor signed (either physically or by means of a facsimile or an electronic transmission, provided that such electronic transmission is transmitted through the facilities of a Depositary) by such Holders in person or by agent duly appointed in writing; and, except as herein otherwise expressly provided, such action shall become effective when such instrument or instruments are delivered to the Trustee and, where it is hereby expressly required, to the Company or the Guarantors. Such instrument or instruments (and the action embodied therein and evidenced thereby) are herein sometimes referred to as the “ Act ” of the Holders signing such instrument or instruments. Proof of execution of any such instrument or of a writing appointing any such agent shall be sufficient for any purpose of this Indenture and (subject to Section 315 of the Trust Indenture Act) conclusive in favor of the Trustee, the Company and, if applicable, the Guarantors, if made in the manner provided in this Section.

(b) The fact and date of the execution by any Person of any such instrument or writing may be proved by the affidavit of a witness of such execution or by a certificate of a notary public or other officer authorized by law to take acknowledgments of deeds, certifying that the individual signing such instrument or writing acknowledged to him the execution thereof. Where such execution is by a signer acting in a capacity other than his individual capacity, such certificate or affidavit shall also constitute sufficient proof of his authority. The fact and date of the execution of any such instrument or writing, or the authority of the Person executing the same, may also be proved in any other manner which the Trustee deems sufficient.

(c) The ownership, principal amount and serial numbers of Securities held by any Person, and the date of commencement of such Person’s holding of same, shall be proved by the Security Register.

(d) Any request, demand, authorization, direction, notice, consent, waiver or other Act of the Holder of any Security shall bind every future Holder of the same Security and the Holder of every Security issued upon the registration of transfer thereof or in exchange therefor or in lieu thereof in respect of anything done, omitted or suffered to be done by the Trustee, the Company or, if applicable, the Guarantors in reliance thereon, regardless of whether notation of such action is made upon such Security.

(e) Without limiting the foregoing, a Holder entitled to give or take any action hereunder with regard to any particular Security may do so with regard to all or any part of the principal amount of such Security or by one or more duly appointed agents each of

which may do so pursuant to such appointment with regard to all or any different part of such principal amount.

(f) The Company may set any day as the record date for the purpose of determining the Holders of Outstanding Securities of any series entitled to give or take any request, demand, authorization, direction, notice, consent, waiver or other Act provided or permitted by this Indenture to be given or taken by Holders of Securities of such series, but the Company shall have no obligation to do so. With regard to any record date set pursuant to this paragraph, the Holders of Outstanding Securities of the relevant series on such record date (or their duly appointed agents), and only such Persons, shall be entitled to give or take the relevant action, regardless of whether such Holders remain Holders after such record date.

Section 1.6. Notices, Etc., to Trustee, Company and Guarantors .

(a) Any notice or communication by the Company, any of the Guarantors or the Trustee to the others shall be in writing and delivered in person or mailed by first-class mail (registered or certified, return receipt requested), telecopier or overnight air courier guaranteeing next day delivery, to the others’ address:

If to the Company and/or any Guarantor:


c/o		Oasis Petroleum Inc.
		First City Tower
		1001 Fannin, Suite 1500
		Houston, Texas 77002
		Facsimile: (281) 404-9704
		Attention: General Counsel

If to the Trustee:

U.S. Bank National Association
5555 San Felipe, Suite 1150
Houston, Texas 77056
Facsimile: (713) 235-9213
Attention: Corporate Trust Services

(b) The Company, the Guarantors or the Trustee, by notice to the others, may designate additional or different addresses for subsequent notices or communications.

(c) All notices and communications (other than those sent to Holders, unless mailed in the manner herein prescribed) shall be deemed to have been duly given: at the time delivered by hand, if personally delivered; three Business Days after being deposited in the mail, postage prepaid, if mailed; when receipt is acknowledged, if telecopied; and the next Business Day after timely delivery to the courier, if sent by overnight air courier guaranteeing next day delivery, except in the case of notices or communications given to the Trustee, which shall be effective only upon actual receipt by the Trustee at its Corporate Trust Office.

(d) Except as set forth above, if a notice or communication is mailed or couriered in the manner provided above within the time prescribed, it is duly given, whether or not the addressee receives it.

(e) If the Company mails a notice or communication to Holders, it will mail a copy to the Trustee and any Securities Registrar or Paying Agent at the same time.

(f) The Trustee shall have the right, but shall not be required, to rely upon and comply with instructions and directions sent by e-mail, facsimile and other similar unsecured electronic methods by persons believed by the Trustee to be authorized to give instructions and directions on behalf of the Company or any Guarantor. The Trustee shall have no duty or obligation to verify or confirm that the person who sent such instructions or directions is, in fact, a person authorized to give instructions or directions on behalf of the Company or such Guarantor; and the Trustee shall have no liability for any losses, liabilities, costs or expenses incurred or sustained by the Company or such Guarantor as a result of such reliance upon or compliance with such instructions or directions. The Company agrees to assume all risks arising out of the use of such electronic methods to submit instructions and directions to the Trustee, including, without limitation, the risk of the Trustee acting on unauthorized instructions and the risk of interception and misuse by third parties.

Section 1.7. Notice to Holders; Waiver .

Where this Indenture provides for notice to Holders of any event, such notice shall be sufficiently given (unless otherwise herein expressly provided) if in writing and mailed, first-class postage prepaid, to each Holder affected by such event, at such Holder’s address as it appears in the Security Register, not later than the latest date, and not earlier than the earliest date, prescribed for the giving of such notice. In any case where notice to Holders is given by mail, neither the failure to mail such notice, nor any defect in any notice so mailed, to any particular Holder shall affect the sufficiency of such notice with respect to other Holders. Any notice mailed to a Holder in the manner herein prescribed shall be conclusively deemed to have been received by such Holder, regardless of whether such Holder actually receives such notice.

Where this Indenture provides for notice in any manner, such notice may be waived in writing by the Person entitled to receive such notice, either before or after the event, and such waiver shall be the equivalent of such notice. Waivers of notice by Holders shall be filed with the Trustee, but such filing shall not be a condition precedent to the validity of any action taken in reliance upon such waiver.

In case it shall be impracticable to give such notice by mail by reason of the suspension of regular mail service or by reason of any other cause, then such notification as shall be made with the approval of the Trustee shall constitute a sufficient notification for every purpose hereunder.

Section 1.8. Conflict with Trust Indenture Act .

If any provision hereof limits, qualifies or conflicts with a provision of the Trust Indenture Act that is required under the Trust Indenture Act to be a part of and to govern this

Indenture, such provision of the Trust Indenture Act shall control. If any provision of this Indenture modifies or excludes any provision of the Trust Indenture Act that may be so modified or excluded, such provision of the Trust Indenture Act shall be deemed to apply to this Indenture as so modified or excluded, as the case may be.

Section 1.9. Effect of Headings and Table of Contents .

The Article and Section headings, Cross-Reference Table and the Table of Contents herein are for convenience or reference only and will in no way modify or restrict any of the terms or provisions hereof and shall not affect the construction hereof.

Section 1.10. Successors and Assigns .

All covenants and agreements in this Indenture by each of the Company and the Guarantors shall bind their respective successors and assigns, whether so expressed or not. All agreements of the Trustee in this Indenture will bind its successors.

Section 1.11. Separability Clause .

In case any provision in this Indenture or in the Securities or, if applicable, the Securities Guarantee shall be invalid, illegal or unenforceable, the validity, legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby.

Section 1.12. Benefits of Indenture .

Nothing in this Indenture or in the Securities or, if applicable, the Securities Guarantee, express or implied, shall give to any Person, other than the parties hereto and their successors hereunder and the Holders, any benefit or any legal or equitable right, remedy or claim under this Indenture.

Section 1.13. Force Majeure .

In no event shall the Trustee be responsible or liable for any failure or delay in the performance of its obligations hereunder arising out of or caused by, directly or indirectly, forces beyond its control, including strikes, work stoppages, accidents, acts of war or terrorism, civil or military disturbances, nuclear or natural catastrophes or acts of God, and interruptions, loss or malfunctions of utilities, communications or computer (software and hardware) services; it being understood that the Trustee shall use reasonable efforts which are consistent with accepted practices in the banking industry to resume performance as soon as practicable under the circumstances.

Section 1.14. Waiver of Jury Trial .

EACH PARTY HERETO HEREBY WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY RIGHT IT MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY LITIGATION DIRECTLY OR INDIRECTLY ARISING OUT OF, UNDER OR IN CONNECTION WITH THIS INDENTURE.

Section 1.15. Governing Law .

THIS INDENTURE, THE SECURITIES AND THE SECURITIES GUARANTEE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

Section 1.16. Legal Holidays .

In any case where any Interest Payment Date, Redemption Date or other date of Maturity of any Security shall not be a Business Day at any Place of Payment, then (notwithstanding any other provision of this Indenture or of the Securities or, if applicable, the Securities Guarantee (other than a provision of the Securities of any series or, if applicable, the Securities Guarantee that specifically states that such provision shall apply in lieu of this Section 1.16)) payment of interest or principal and any premium need not be made at such Place of Payment on such date, but may be made on the next succeeding Business Day at such Place of Payment with the same force and effect as if made on the Interest Payment Date or Redemption Date, or at the Stated Maturity, provided that no interest shall accrue on such payment for the intervening period.

Section 1.17. Securities in a Composite Currency, Currency Unit or Foreign Currency .

Unless otherwise specified in a Board Resolution, an Officers’ Certificate or indenture supplemental hereto delivered pursuant to Section 3.1 of this Indenture with respect to a particular series of Securities, whenever for purposes of this Indenture any action may be taken by the Holders of a specified percentage in aggregate principal amount of Securities of all series or all series affected by a particular action at the time Outstanding and, at such time, there are Outstanding Securities of any series which are denominated in a coin, currency or currencies other than Dollars (including, but not limited to, any composite currency, currency units or Foreign Currency), then the principal amount of Securities of such series that shall be deemed to be Outstanding for the purpose of taking such action shall be that amount of Dollars that could be obtained for such amount at the Market Exchange Rate. For purposes of this Section 1.17, the term “ Market Exchange Rate ” shall mean the noon Dollar buying rate in The City of New York for cable transfers of such currency or currencies as published by the Federal Reserve Bank of New York, as of the most recent available date. If such Market Exchange Rate is not so available for any reason with respect to such currency, the Trustee shall use, in its sole discretion and without liability on its part, such quotation of the Federal Reserve Bank of New York as of the most recent available date, or quotations or rates of exchange from one or more major banks in The City of New York or in the country of issue of the currency in question, which for purposes of euros shall be Brussels, Belgium, or such other quotations or rates of exchange as the Trustee shall deem appropriate. The provisions of this paragraph shall apply in determining the equivalent principal amount in respect of Securities of a series denominated in a currency other than Dollars in connection with any action taken by Holders of Securities pursuant to the terms of this Indenture.

All decisions and determinations of the Trustee regarding the Market Exchange Rate or any alternative determination provided for in the preceding paragraph shall be in its sole discretion and without liability on its part, and shall, in the absence of manifest error, be

conclusive to the extent permitted by law for all purposes and irrevocably binding upon the Company and all Holders.

Section 1.18. Payment in Required Currency; Judgment Currency .

Each of the Company and the Guarantors agrees, to the fullest extent that it may effectively do so under applicable law, that (a) if for the purpose of obtaining judgment in any court it is necessary to convert the sum due in respect of the principal of or interest on the Securities of any series (the “ Required Currency ”) into a currency in which a judgment will be rendered (the “ Judgment Currency ”), the rate of exchange used shall be the rate at which in accordance with normal banking procedures the Trustee could purchase in The City of New York the Required Currency with the Judgment Currency on the day on which final unappealable judgment is entered, unless such day is not a Business Day, then, to the extent permitted by applicable law, the rate of exchange used shall be the rate at which in accordance with normal banking procedures the Trustee could purchase in The City of New York the Required Currency with the Judgment Currency on the Business Day next preceding the day on which final unappealable judgment is entered and (b) its obligations under this Indenture to make payments in the Required Currency (i) shall not be discharged or satisfied by any tender, or any recovery pursuant to any judgment (regardless of whether entered in accordance with subclause (a)), in any currency other than the Required Currency, except to the extent that such tender or recovery shall result in the actual receipt, by the payee, of the full amount of the Required Currency expressed to be payable in respect of such payments, (ii) shall be enforceable as an alternative or additional cause of action for the purpose of recovering in the Required Currency the amount, if any, by which such actual receipt shall fall short of the full amount of the Required Currency so expressed to be payable and (iii) shall not be affected by judgment being obtained for any other sum due under this Indenture.

Section 1.19. Language of Notices, Etc.

Any request, demand, authorization, direction, notice, consent, waiver or Act required or permitted under this Indenture shall be in the English language, except that any published notice may be in an official language of the country of publication.

Section 1.20. No Personal Liability of Directors, Officers, Employees and Stockholders .

No past, present or future director, officer, employee, incorporator, stockholder, member, manager or partner of the Company or any Guarantor, as such, will have any liability for any obligations of the Company or the Guarantors under the Securities, this Indenture, the Securities Guarantee, if applicable, or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each Holder of Securities by accepting a Security waives and releases all such liability. Such waiver and release are part of the consideration for issuance of the Securities.

ARTICLE TWO
SECURITY FORMS

Section 2.1. Forms Generally .

The Securities of each series and, if applicable, the notation thereon relating to the Securities Guarantee, shall be in substantially the form set forth in this Article Two, or in such other form or forms as shall be established by or pursuant to a Board Resolution and set forth, or determined in the manner provided, in an Officers’ Certificate, or established in one or more indentures supplemental hereto, in each case with such appropriate insertions, omissions, substitutions and other variations as are required or permitted by this Indenture, and may have such letters, numbers or other marks of identification and such legends or endorsements placed thereon as may be required to comply with the rules of any securities exchange or as may, consistently herewith, be determined by the officers executing such Securities and, if applicable, any notation of the Securities Guarantee, as evidenced by their execution thereof.

The definitive Securities shall be printed, lithographed or engraved on steel engraved borders or may be produced in any other manner, all as determined by the officers executing such Securities, as evidenced by their execution thereof. If the form of Securities of any series is established by action taken pursuant to a Board Resolution, a copy of an appropriate record of such action shall be certified by an authorized officer or other authorized person on behalf of the Company and delivered to the Trustee at or prior to the delivery of the Company Order contemplated by Section 3.3 for the authentication and delivery of such Securities.

The forms of Global Securities of any series shall have such provisions and legends as are customary for Securities of such series in global form, including without limitation any legend required by the Depositary for the Securities of such series.

Section 2.2. Form of Face of Security .

[ If the Security is an Original Issue Discount Security and is not “publicly offered” within the meaning of Treasury Regulations Section 1.1275-1(h), insert— FOR PURPOSES OF SECTION 1275 OF THE UNITED STATES INTERNAL REVENUE CODE OF 1986, AS AMENDED, THIS SECURITY WAS ISSUED WITH ORIGINAL ISSUE DISCOUNT, THE AMOUNT OF THE ORIGINAL ISSUE DISCOUNT IS [ % OF ITS PRINCIPAL AMOUNT] [$ PER $1,000 OF PRINCIPAL AMOUNT], THE ISSUE DATE IS , 20__ AND, THE YIELD TO MATURITY IS , COMPOUNDED [SEMIANNUALLY OR OTHER PROPER PERIOD]. [ In the alternative instead of providing such legend, insert the following legend —FOR PURPOSES OF SECTION 1275 OF THE UNITED STATES INTERNAL REVENUE CODE OF 1986, AS AMENDED, THIS SECURITY WAS ISSUED WITH ORIGINAL ISSUE DISCOUNT, AND [THE NAME OR TITLE AND ADDRESS OR TELEPHONE NUMBER OF A REPRESENTATIVE OF THE COMPANY] WILL, BEGINNING NO LATER THAN 10 DAYS AFTER THE ISSUE DATE, PROMPTLY MAKE AVAILABLE TO HOLDERS THE AMOUNT OF ORIGINAL ISSUE DISCOUNT, THE ISSUE DATE, THE YIELD TO MATURITY AND ANY OTHER INFORMATION REQUIRED BY APPLICABLE TREASURY REGULATIONS.]

[Insert any other legend required by the Code or the regulations thereunder.]

[ If a Global Security,—insert legend required by Section 2.4 of the Indenture ] [ If applicable, insert— UNLESS THIS SECURITY IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION, TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY SECURITY ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.]

OASIS PETROLEUM INC.

[TITLE OF SECURITY]



No		U.S. $

[CUSIP No. ]

OASIS PETROLEUM INC., a company duly incorporated and existing under the laws of the State of Delaware (herein called the “ Company, ” which term includes any successor or resulting Person under the Indenture hereinafter referred to), for value received, hereby promises to pay to , or registered assigns, the principal sum of United States Dollars on [ If the Security is to bear interest prior to Maturity, insert— , and to pay interest thereon from or from the most recent Interest Payment Date to which interest has been paid or duly provided for, semi-annually on and in each year, commencing , at the rate of ___% per annum, until the principal hereof is paid or made available for payment [ if applicable, insert— , and at the rate of ___% per annum on any overdue principal and premium and on any installment of interest (to the extent that the payment of such interest shall be legally enforceable)]. The interest so payable, and punctually paid or duly provided for, on any Interest Payment Date will, as provided in such Indenture, be paid to the Person in whose name this Security (or one or more Predecessor Securities) is registered at the close of business on the Regular Record Date for such interest, which shall be the ___or ___(regardless of whether a Business Day), as the case may be, next preceding such Interest Payment Date. Any such interest not so punctually paid or duly provided for will forthwith cease to be payable to the Holder on such Regular Record Date and may either be paid to the Person in whose name this Security (or one or more Predecessor Securities) is registered at the close of business on a Special Record Date for the payment of such Defaulted Interest to be fixed by the Trustee, notice whereof shall be given to Holders of Securities of this series not less than 10 days prior to such Special Record Date, or be paid at any time in any other lawful manner not inconsistent with the requirements of any securities exchange on which the Securities of this series may be listed, and upon such notice as may be required by such exchange, all as more fully provided in said Indenture].

[ If the Security is not to bear interest prior to Maturity, insert— The principal of this Security shall not bear interest except in the case of a default in payment of principal upon acceleration, upon redemption or at Stated Maturity and in such case the overdue principal of this Security shall bear interest at the rate of ___% per annum (to the extent that the payment of such interest shall be legally enforceable), which shall accrue from the date of such default in payment to the date payment of such principal has been made or duly provided for. Interest on any overdue principal shall be payable on demand. Any such interest on any overdue principal that is not so paid on demand shall bear interest at the rate of . . . . % per annum (to the extent that the payment of such interest shall be legally enforceable), which shall accrue from the date of such demand for payment to the date payment of such interest has been made or duly provided for, and such interest shall also be payable on demand.]

[ If a Global Security, insert— Payment of the principal of (and premium, if any) and [ if applicable, insert— any such] interest on this Security will be made by transfer of immediately available funds to a bank account in ___________ designated by the Holder in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts [state other currency].]

[ If a Definitive Security, insert— Payment of the principal of (and premium, if any) and [ if applicable, insert— any such] interest on this Security will be made at the office or agency of the Company maintained for that purpose in _______________, in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts] [state other currency] [or subject to any laws or regulations applicable thereto and to the right of the Company (as provided in the Indenture) to rescind the designation of any such Paying Agent, at the [main] offices of ________________ in _____________, or at such other offices or agencies as the Company may designate, by [United States Dollar] [state other currency] check drawn on, or transfer to a [United States Dollar] account maintained by the payee with, a bank in The City of New York (so long as the applicable Paying Agency has received proper transfer instructions in writing at least ___ days prior to the payment date)] [ if applicable, insert— ; provided , however , that payment of interest may be made at the option of the Company by [United States Dollar] [state other currency] check mailed to the addresses of the Persons entitled thereto as such addresses shall appear in the Security Register] [or by transfer to a [United States Dollar] [state other currency] account maintained by the payee with a bank in The City of New York [state other Place of Payment] (so long as the applicable Paying Agent has received proper transfer instructions in writing by the record date prior to the applicable Interest Payment Date)].]

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

Unless the certificate of authentication hereon has been executed by the Trustee referred to on the reverse hereof by manual signature, this Security shall not be entitled to any benefit under the Indenture or be valid or obligatory for any purpose.

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

Dated:


	OASIS PETROLEUM INC.
	By:

Section 2.3. Form of Reverse of Security .

This Security is one of a duly authorized issue of senior securities of the Company (herein called the “ Securities ”), issued and to be issued in one or more series under an Indenture, dated as of February 2, 2011 (herein called the “ Indenture ”), between the Company [ if applicable, insert— , the Guarantors] and U.S. Bank National Association, as trustee (herein called the “ Trustee,” which term includes any successor trustee under the Indenture), to which Indenture and all indentures supplemental thereto reference is hereby made for a statement, of the respective rights, limitations of rights, duties and immunities thereunder of the Company [ if applicable, insert— , the Guarantors], the Trustee and the Holders of the Securities and of the terms upon which the Securities are, and are to be, authenticated and delivered. As provided in the Indenture, the Securities may be issued in one or more series, which different series may be issued in various aggregate principal amounts, may mature at different times, may bear interest, if any, at different rates, may be subject to different redemption provisions, if any, may be subject to different sinking, purchase or analogous funds, if any, may be subject to different covenants and Events of Default and may otherwise vary as in the Indenture provided or permitted. This Security is one of the series designated on the face hereof [, limited in aggregate principal amount to $ ].

This security is the general, unsecured, senior obligation of the Company [ if applicable, insert— and is guaranteed pursuant to a guarantee (the “ Securities Guarantee ”) by [ insert name of each Guarantor ] (the “ Guarantors ”). The Securities Guarantee is the general, unsecured, senior obligation of each Guarantor.]

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


Year	Redemption Price	Year	Redemption Price

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

[ If applicable, insert— The Securities of this series are subject to redemption upon not less than ___nor more than ___days’ notice by mail, (1) on in any year commencing with the year ___ and ending with the year ___ through operation of the sinking fund for this series at the Redemption Prices for redemption through operation of the sinking fund (expressed as percentages of the principal amount) set forth in the table below, and (2) at any time [on or after ], as a whole or in part, at the election of the Company, at the Redemption Prices for redemption otherwise than through operation of the sinking fund (expressed as percentages of the principal amount) set forth in the table below: If redeemed during the 12-month period beginning of the years indicated,


	Redemption Price For Redemption	Redemption Price for Redemption
	Through Operation of the	Otherwise Than Through
Year	Sinking Fund	Operation of the Sinking Fund

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

[ If applicable, insert— Notwithstanding the foregoing, the Company may not, prior to , redeem any Securities of this series as contemplated by [clause (2) of] the preceding paragraph as a part of, or in anticipation of, any refunding operation by the application, directly or indirectly, of moneys borrowed having an interest cost to the Company (calculated in accordance with generally accepted financial practice) of less than ___% per annum.]

[ If applicable, insert— The sinking fund for this series provides for the redemption on in each year beginning with the year ___ and ending with the year ___ of [not less than] [ (“ mandatory sinking fund ”) and not more than $ ] aggregate principal amount of Securities of this series. [Securities of this series acquired or redeemed by the Company otherwise than through [mandatory] sinking fund payments may be credited against subsequent [mandatory] sinking fund payments otherwise required to be made [ If applicable, insert— in the inverse order in which they become due].]

[ If the Securities are subject to redemption in part of any kind, insert— In the event of redemption of this Security in part only, a new Security or Securities of this series and of like

tenor for the unredeemed portion hereof will be issued in the name of the Holder hereof upon the cancellation hereof.]

[ If applicable, insert— The Securities of this series are not redeemable prior to Stated Maturity.]

[ If the Security is not an Original Issue Discount Security , — If an Event of Default with respect to Securities of this series shall occur and be continuing, the principal of the Securities of this series may be declared due and payable in the manner and with the effect provided in the Indenture.]

[ If the Security is an Original Issue Discount Security , — If an Event of Default with respect to Securities of this series shall occur and be continuing, an amount of principal of the Securities of this series may be declared due and payable in the manner and with the effect provided in the Indenture. Such amount shall be equal to —insert formula for determining the amount . Upon payment (i) of the amount of principal so declared due and payable and (ii) of interest on any overdue principal and overdue interest (in each case to the extent that the payment of such interest shall be legally enforceable), all of the Company’s obligations in respect of the payment of the principal of and interest, if any, on the Securities of this series shall terminate.]

The Indenture permits, with certain exceptions as therein provided, the amendment thereof and the modification of the rights and obligations of the Company [ If applicable, insert— and the Guarantors] and the rights of the Holders of the Securities of each series to be affected under the Indenture at any time by the Company [ If applicable, insert— and the Guarantors] and the Trustee with the consent of the Holders of a majority in aggregate principal amount of the Securities at the time Outstanding of each series to be affected. The Indenture also contains provisions permitting the Holders of specified percentages in aggregate principal amount of the Securities of each series at the time Outstanding, on behalf of the Holders of all Securities of such series, to waive compliance by the Company [ If applicable, insert— and the Guarantors] with certain provisions of the Indenture and certain past defaults under the Indenture and their consequences. Any such consent or waiver by the Holder of this Security shall be conclusive and binding upon such Holder and upon all future Holders of this Security and of any Security issued upon the registration of transfer hereof or in exchange herefor or in lieu hereof, regardless of whether notation of such consent or waiver is made upon this Security.

No reference herein to the Indenture and no provision of this Security or of the Indenture shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of (and premium, if any) and interest on this Security at the times, place(s) and rate, and in the coin or currency, herein prescribed.

[ If a Global Security, insert— This Global Security or portion hereof may not be exchanged for Definitive Securities of this series except in the limited circumstances provided in the Indenture. The holders of beneficial interests in this Global Security will not be entitled to receive physical delivery of Definitive Securities except as described in the Indenture and will not be considered the Holders thereof for any purpose under the Indenture.]

[ If a Definitive Security, insert— As provided in the Indenture and subject to certain limitations therein set forth, the transfer of this Security is registerable in the Security Register, upon

surrender of this Security for registration of transfer at the office or agency of the Company in [ if applicable, insert— any place where the principal of and any premium and interest on this Security are payable] [ if applicable, insert— The City of New York [, or, subject to any laws or regulations applicable thereto and to the right of the Company (limited as provided in the Indenture) to rescind the designation of any such transfer agent, at the [main] offices of _______________ in ________________ or at such other offices or agencies as the Company may designate]], duly endorsed by, or accompanied by a written instrument of transfer in form satisfactory to the Company and the Security Registrar duly executed by, the Holder hereof or the Holder’s attorney duly authorized in writing, and thereupon one or more new Securities of this series and of like tenor, of authorized denominations and for the same aggregate principal amount, will be issued to the designated transferee or transferees.]

The Securities of this series are issuable only in registered form without coupons in denominations of U.S. $ and any integral multiple thereof. As provided in the Indenture and subject to certain limitations therein set forth, Securities of this series are exchangeable for a like aggregate principal amount of Securities of this series and of like tenor of a different authorized denomination, as requested by the Holder surrendering the same.

No service charge shall be made for any such registration of transfer or exchange, but the Company may require payment of a sum sufficient to cover any tax or other governmental charge payable in connection therewith.

Prior to due presentment of this Security for registration of transfer, the Company, [ If applicable, insert— any Guarantor,] the Trustee and any agent of the Company [ If applicable, insert— , a Guarantor] or the Trustee may treat the Person in whose name this Security is registered as the owner hereof for all purposes, regardless of whether this Security be overdue, and none of the Company, [ If applicable, insert— the Guarantors,] the Trustee nor any such agent shall be affected by notice to the contrary.

No recourse under or upon any obligation, covenant or agreement of or contained in the Indenture or of or contained in any Security, [ If applicable, insert— , or the Securities Guarantee,] or for any claim based thereon or otherwise in respect thereof, or because of the creation of any indebtedness represented thereby, shall be had against any director, officer, employee, incorporator, stockholder, member, manager or partner, as such, past, present or future, of the Company [ If applicable, insert— or any Guarantor] or of any successor Person, either directly or through the Company [ If applicable, insert— or any Guarantor] or any successor Person, whether by virtue of any constitution, statute or rule of law, or by the enforcement of any assessment, penalty or otherwise; it being expressly understood that all such liability is hereby expressly waived and released by the acceptance hereof and as a condition of, and as part of the consideration for, the Securities and the execution of the Indenture.

The Indenture provides that the Company [ If applicable, insert— and the Guarantors] (a) will be discharged from any and all obligations in respect of the Securities (except for certain obligations described in the Indenture), or (b) need not comply with certain restrictive covenants of the Indenture, in each case if the Company [ If applicable, insert— or a Guarantor] deposits, in trust, with the Trustee money or Government Securities (or a combination thereof) which through the payment of interest thereon and principal thereof in accordance with their terms will provide

money, in an amount sufficient to pay all the principal of and interest on the Securities, but such money need not be segregated from other funds except to the extent required by law.

Except as otherwise defined herein, all terms used in this Security that are defined in the Indenture shall have the meanings assigned to them in the Indenture.

[ If a Definitive Security, insert as a separate page —

FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and transfer(s) unto

(Please Print or Type Name and Address of Assignee)

the within instrument of OASIS PETROLEUM INC. and does hereby irrevocably constitute and appoint ___________________ Attorney to transfer said instrument on the books of the within-named Company, with full power of substitution in the premises.

Please Insert Social Security or Other Identifying Number of Assignee:



Dated:
		(Signature)

NOTICE: The signature to this assignment must correspond with the name as written upon the face of the within instrument in every particular, without alteration or enlargement or any change whatsoever.]

[ If a Security to which Article Fourteen has been made applicable, insert the following Form of Notation on such Security relating to the Securities Guarantee —

Each of the Guarantors (which term includes any successor Person in such capacity under the Indenture), has fully, unconditionally and absolutely guaranteed, to the extent set forth in the Indenture and subject to the provisions in the Indenture, the due and punctual payment of the principal of, and premium, if any, and interest on the Securities of this series and all other amounts due and payable under the Indenture and the Securities of this series by the Company.

The obligations of the Guarantors to the Holders of Securities of this series and to the Trustee pursuant to the Securities Guarantee and the Indenture are expressly set forth in Article Fourteen of the Indenture and reference is hereby made to the Indenture for the precise terms of the Securities Guarantee.


	Guarantors: [NAME OF EACH GUARANTOR]
	By:
				]

Section 2.4. Global Securities .

Every Global Security authenticated and delivered hereunder shall bear a legend in substantially the following form:

THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A NOMINEE THEREOF. THIS SECURITY MAY NOT BE TRANSFERRED TO, OR REGISTERED OR EXCHANGED FOR SECURITIES REGISTERED IN THE NAME OF, ANY PERSON OTHER THAN THE DEPOSITARY OR A NOMINEE THEREOF AND NO SUCH TRANSFER MAY BE REGISTERED, EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE.

EVERY SECURITY AUTHENTICATED AND DELIVERED UPON REGISTRATION OF TRANSFER OF, OR IN EXCHANGE FOR OR IN LIEU OF, THIS SECURITY SHALL BE A GLOBAL SECURITY SUBJECT TO THE FOREGOING, EXCEPT IN SUCH LIMITED CIRCUMSTANCES.

If Securities of a series are issuable in whole or in part in the form of one or more Global Securities, as specified by Section 3.1, then, notwithstanding clause (i) of Section 3.1 and the provisions of Section 3.2, any Global Security shall represent such of the Outstanding Securities of such series as shall be specified therein and may provide that it shall represent the aggregate amount of Outstanding Securities from time to time endorsed thereon and that the aggregate amount of Outstanding Securities represented thereby may from time to time be reduced or increased, as the case may be, to reflect exchanges. Any endorsement of a Global Security to reflect the amount, or any reduction or increase in the amount, of Outstanding Securities represented thereby shall be made in such manner and upon instructions given by such Person or Persons as shall be specified therein or in a Company Order. Subject to the provisions of Section 3.3, Section 3.4 and Section 3.5, the Trustee shall deliver and redeliver any Global Security in the manner and upon instructions given by the Person or Persons specified therein or in the applicable Company Order. Any instructions by the Company with respect to endorsement or delivery or redelivery of a Global Security shall be in a Company Order (which need not comply with Section 1.3 and need not be accompanied by an Opinion of Counsel).

The provisions of the last sentence of Section 3.3 shall apply to any Security represented by a Global Security if such Security was never issued and sold by the Company and the Company delivers to the Trustee the Global Security together with a Company Order (which need not comply with Section 1.3 and need not be accompanied by an Opinion of Counsel) with regard to the reduction or increase, as the case may be, in the principal amount of Securities represented thereby, together with the written statement contemplated by the last sentence of Section 3.3.

Section 2.5. Form of Trustee’s Certificate of Authentication .

The Trustee’s certificate(s) of authentication shall be in substantially the following form:

This is one of the Securities of the series designated [ insert title of applicable series ] referred to in the within-mentioned Indenture.


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

ARTICLE THREE
THE SECURITIES

Section 3.1. Amount Unlimited; Issuable in Series .

The aggregate principal amount of Securities that may be authenticated and delivered under this Indenture is unlimited.

The Securities may be issued in one or more series. There shall be established by or pursuant to a Board Resolution, and set forth, or determined in the manner provided, in an Officers’ Certificate, or established in one or more indentures supplemental hereto, prior to the issuance of Securities of any series,

(a) the title of the Securities of the series (which shall distinguish the Securities of the series from all other Securities and which may be part of a series of Securities previously issued);

(b) any limit upon the aggregate principal amount of the Securities of the series which may be authenticated and delivered under this Indenture (except for Securities authenticated and delivered upon registration of transfer of, or in exchange for, or in lieu of, other Securities of the series pursuant to Section 3.4, Section 3.5, Section 3.6, Section 9.6 or Section 11.7 and except for any Securities which, pursuant to Section 3.3, are deemed never to have been authenticated and delivered hereunder);

(c) the Person to whom any interest on a Security of the series shall be payable, if other than the Person in whose name that Security (or one or more Predecessor Securities) is registered at the close of business on the Regular Record Date for such interest;

(d) the date or dates on which the principal of the Securities of the series is payable or the method of determination thereof;

(e) the rate or rates at which the Securities of the series shall bear interest, if any, or the formula, method or provision pursuant to which such rate or rates are

determined, the date or dates from which such interest shall accrue or the method of determination thereof, the Interest Payment Dates on which such interest shall be payable and the Regular Record Date for the interest payable on any Interest Payment Date;

(f) the place or places where, subject to the provisions of Section 10.2, the principal of and any premium and interest on Securities of the series shall be payable, Securities of the series may be surrendered for registration of transfer, Securities of the series may be surrendered for exchange, and notices and demands to or upon the Company in respect of the Securities of the series and this Indenture may be served;

(g) the period or periods within which, the price or prices at which and the terms and conditions upon which Securities of the series may be redeemed, in whole or in part, at the option of the Company;

(h) the obligation, if any, of the Company to redeem or purchase Securities of the series pursuant to any sinking fund or analogous provisions or at the option of a Holder thereof and the period or periods within which, the price or prices at which and the terms and conditions upon which Securities of the series shall be redeemed or purchased, in whole or in part, pursuant to such obligation;

(i) if other than denominations of $1,000 and any integral multiple thereof, the denominations in which Securities of the series shall be issuable;

(j) whether payment of principal of and premium, if any, and interest, if any, on the Securities of the series shall be without deduction for taxes, assessments or governmental charges paid by Holders of the series;

(k) if other than the principal amount thereof, the portion of the principal amount of Securities of the series that shall be payable upon declaration of acceleration of the Maturity thereof pursuant to Section 5.2;

(l) if the amount of payments of principal of and any premium or interest on the Securities of the series may be determined with reference to an index, the manner in which such amounts shall be determined;

(m) if and as applicable, that the Securities of the series shall be issuable in whole or in part in the form of one or more Global Securities and, in such case, the Depositary or Depositaries for such Global Security or Global Securities and any circumstances other than those set forth in Section 3.5 in which any such Global Security may be transferred to, and registered and exchanged for, Securities registered in the name of, a Person other than the Depositary for such Global Security or a nominee thereof and in which any such transfer may be registered;

(n) any deletions from, modifications of or additions to the Events of Default set forth in Section 5.1 or the covenants of the Company set forth in Article Ten with respect to the Securities of such series;

(o) whether and under what circumstances the Company will pay additional amounts on the Securities of the series held by a Person who is not a U.S. Person in respect of any tax, assessment or governmental charge withheld or deducted and, if so, whether the Company will have the option to redeem the Securities of the series rather than pay such additional amounts;

(p) if the Securities of the series are to be issuable in definitive form (whether upon original issue or upon exchange of a temporary Security of such series) only upon receipt of certain certificates or other documents or satisfaction of other conditions, the form and terms of such certificates, documents or conditions, as applicable;

(q) if the Securities of the series are to be convertible into or exchangeable for any other security or property of the Company, including, without limitation, securities of another Person held by the Company or its Affiliates, the terms thereof;

(r) if other than as provided in Section 13.2 and Section 13.3, the means of Legal Defeasance or Covenant Defeasance as may be specified for the Securities of the series;

(s) if other than the Trustee, the identity of the initial Security Registrar and any initial Paying Agent;

(t) whether the Securities of the series will be guaranteed pursuant to the Securities Guarantee set forth in Article Fourteen, any modifications to the terms of Article Fourteen applicable to the Securities of such series and the applicability of any other guarantees; and

(u) any other terms of the series (which terms shall not be inconsistent with the provisions of this Indenture).

All Securities of any one series shall be substantially identical except as to denomination and except as may otherwise be provided in or pursuant to the Board Resolution referred to above and (subject to Section 3.3) set forth, or determined in the manner provided, in the Officers’ Certificate referred to above or in any such indenture supplemental hereto.

All Securities of any one series need not be issued at the same time and, unless otherwise provided, a series may be reopened, without the consent of the Holders, for increases in the aggregate principal amount of such series of Securities and issuances of additional Securities of such series or for the establishment of additional terms with respect to the Securities of such series.

If any of the terms of the series are established by action taken by or pursuant to a Board Resolution, a copy of an appropriate record of such action shall be certified by an authorized officer or other authorized person on behalf of the Company and, if applicable, the Guarantors and delivered to the Trustee at or prior to the delivery of the Officers’ Certificate setting forth, or providing the manner for determining, the terms of the series.

With respect to Securities of a series subject to a Periodic Offering, such Board Resolution or Officers’ Certificate may provide general terms for Securities of such series and provide either that the specific terms of particular Securities of such series shall be specified in a Company Order or that such terms shall be determined by the Company and, if applicable, the Guarantors or one or more agents thereof designated in an Officers’ Certificate, in accordance with a Company Order.

Section 3.2. Denominations .

The Securities of each series shall be issuable in registered form without coupons in such denominations as shall be specified as contemplated by Section 3.1. In the absence of any such provisions with respect to the Securities of any series, the Securities of such series shall be issuable in denominations of $2,000 and integral multiples of $1,000 in excess of $2,000.

Section 3.3. Execution, Authentication, Delivery and Dating .

The Securities shall be executed on behalf of the Company by its Chairman of the Board, its Chief Executive Officer, its President, its Chief Financial Officer (or, in the absence of a Chief Financial Offer, its principal financial officer) or any of its Vice Presidents and need not be attested. The signature of any of these officers on the Securities may be manual or facsimile. Any notation of Securities Guarantee endorsed on the Securities shall be executed on behalf of the applicable Guarantor by its Chairman of the Board, its Chief Executive Officer, its President, its Chief Financial Officer (or, in the absence of a Chief Financial Offer, its principal financial officer) or any of its Vice Presidents and need not be attested. The signature of any of these officers on any notation of the Securities Guarantee may be manual or facsimile.

Securities and any notation of a Securities Guarantee bearing the manual or facsimile signatures of individuals who were at any time the proper officers of the Company or a Guarantor, as the case may be, shall bind the Company or such Guarantor, as the case may be, notwithstanding that such individuals or any of them have ceased to hold such offices prior to the authentication and delivery of such Securities or did not hold such offices at the date of such Securities.

At any time and from time to time after the execution and delivery of this Indenture, the Company may deliver Securities of any series executed by the Company to the Trustee for authentication, together with a Company Order for the authentication and delivery of such Securities, and the Trustee, in accordance with the Company Order, shall authenticate and deliver such Securities; provided , however , that in the case of Securities offered in a Periodic Offering, the Trustee shall authenticate and deliver such Securities from time to time in accordance with such other procedures (including, without limitation, the receipt by the Trustee of written instructions from the Company) acceptable to the Trustee as may be specified by or pursuant to a Company Order delivered to the Trustee prior to the time of the first authentication of Securities of such series. If the forms or terms of the Securities of the series have been established in or pursuant to one or more Board Resolutions as permitted by Section 2.1 and Section 3.1, in authenticating such Securities, and accepting the additional responsibilities under this Indenture in relation to such Securities, the Trustee shall be fully protected in relying on such Board Resolution and shall be entitled to receive such documents as it may reasonably

request. The Trustee shall also be entitled to receive, and (subject to Section 6.1) shall be fully protected in relying upon, an Opinion of Counsel stating:

(a) if the form or forms of such Securities has been established by or pursuant to a Board Resolution as permitted by Section 2.1, that each such form has been established in conformity with the provisions of this Indenture;

(b) if the terms of such Securities have been, or in the case of Securities of a series offered in a Periodic Offering will be, established by or pursuant to a Board Resolution as permitted by Section 3.1, that such terms have been, or in the case of Securities of a series offered in a Periodic Offering will be, established in conformity with the provisions of this Indenture, subject, in the case of Securities of a series offered in a Periodic Offering, to any conditions specified in such Opinion of Counsel; and

(c) that such Securities, when authenticated and delivered by the Trustee and issued by the Company in the manner and subject to any conditions and assumptions specified in such Opinion of Counsel, will constitute valid and legally binding obligations of the Company and, if applicable, the Subsidiary Guarantee will constitute valid and legally binding obligations of the Guarantors, enforceable in accordance with their respective terms, subject to the following limitations: (i) bankruptcy, insolvency, moratorium, reorganization, liquidation, fraudulent conveyance or transfer and other similar laws of general applicability relating to or affecting the enforcement of creditors’ rights, or to general equity principles; (ii) the availability of equitable remedies being subject to the discretion of the court to which application therefor is made; and (iii) such other usual and customary matters as shall be specified in such Opinion of Counsel.

If such form or forms or terms have been so established and the issue of such Securities pursuant to this Indenture will affect the Trustee’s own rights, duties or immunities under the Securities and this Indenture or otherwise in a manner that is not reasonably acceptable to the Trustee, then the Trustee shall not be required to authenticate such Securities.

Notwithstanding the provisions of Section 3.1 and of the preceding paragraph, if all Securities of a series are not to be originally issued at one time, it shall not be necessary to deliver the Officers’ Certificate otherwise required pursuant to Section 3.1 or the Company Order and Opinion of Counsel otherwise required pursuant to such preceding paragraph at or prior to the time of authentication of each Security of such series if such documents are delivered at or prior to the authentication upon original issuance of the first Security of such series to be issued.

With respect to Securities of a series offered in a Periodic Offering, the Trustee may rely, as to the authorization by the Company of any of such Securities, on the form or forms and terms thereof and the legality, validity, binding effect and enforceability thereof, upon the Opinion of Counsel and the other documents delivered pursuant to Section 2.1 and Section 3.1 and this Section, as applicable, in connection with the first authentication of Securities of such series.

Each Security shall be dated the date of its authentication.

No Security nor any related Securities Guarantee shall be entitled to any benefit under this Indenture or be valid or obligatory for any purpose unless there appears on such Security a certificate of authentication substantially in the form provided for herein executed by the Trustee or an Authenticating Agent by manual signature of an authorized officer, and such certificate upon any Security shall be conclusive evidence, and the only evidence, that such Security has been duly authenticated and delivered hereunder and is entitled to the benefits of this Indenture. Notwithstanding the foregoing, if any Security shall have been authenticated and delivered hereunder but never issued and sold by the Company, and the Company shall deliver such Security to the Trustee for cancellation as provided in Section 3.9, for all purposes of this Indenture, such Security shall be deemed never to have been authenticated and delivered hereunder and shall never be entitled to the benefits of this Indenture.

Section 3.4. Temporary Securities .

Pending the preparation of Definitive Securities of any series, the Company may execute, and upon Company Order, the Trustee shall authenticate and deliver, temporary Securities that are printed, lithographed, typewritten, mimeographed or otherwise produced, in any authorized denomination, substantially of the tenor of the Definitive Securities in lieu of which they are issued and with such appropriate insertions, omissions, substitutions and other variations as the officers executing such Securities may determine, as evidenced by their execution of such Securities.

If temporary Securities of any series are issued, the Company will cause Definitive Securities of that series to be prepared without unreasonable delay. After the preparation of Definitive Securities of such series, the temporary Securities of such series shall be exchangeable for Definitive Securities of such series upon surrender of the temporary Securities of such series at the office or agency of the Company in a Place of Payment for that series, without charge to the Holder. Upon surrender for cancellation of any one or more temporary Securities of any series the Company shall execute and the Trustee shall authenticate and deliver in exchange therefor a like principal amount of Definitive Securities of the same series and tenor of authorized denominations. Until so exchanged, the temporary Securities of any series shall in all respects be entitled to the same benefits under this Indenture as Definitive Securities of such series.

Section 3.5. Registration, Registration of Transfer and Exchange .

The Company shall cause to be kept at the office or agency of the Company in a Place of Payment required by Section 10.2 a register (the register maintained in such office being herein sometimes referred to as the “ Security Register ”) in which, subject to such reasonable regulations as it may prescribe, the Company shall provide for the registration of Securities and of transfers of Securities. The Trustee is hereby appointed as the initial “ Security Registrar ” for the purpose of registering Securities and transfers of Securities as herein provided, and its Corporate Trust Office is the initial office or agency where the Securities Register will be maintained. The Company may at any time replace such Security Registrar, change such office or agency or act as its own Security Registrar; provided , however , that there shall be only one Security Register for each series of Securities. The Company will give prompt written notice to the Trustee of any change of the Security Registrar or of the location of such office or agency.

Upon surrender for registration of transfer of any Security of any series at the office or agency maintained pursuant to Section 10.2 for such purpose, the Company and, if applicable, the Guarantors shall execute, and the Trustee shall authenticate and deliver, in the name of the designated transferee or transferees, one or more new Securities, with a notation of the Securities Guarantee, if applicable, executed by the Guarantors, of the same series and tenor, of any authorized denominations and of a like tenor and aggregate principal amount.

At the option of the Holder, Securities of any series (except a Global Security) may be exchanged for other Securities of the same series and tenor, of any authorized denominations and of a like aggregate principal amount, upon surrender of the Securities to be exchanged at such office or agency. Whenever any Securities are so surrendered for exchange, the Company and, if applicable, the Guarantors shall execute, and the Trustee shall authenticate and deliver, the Securities, with a notation of the Securities Guarantee, if applicable, executed by the Guarantors, which the Holder making the exchange is entitled to receive.

All Securities issued upon any registration of transfer or exchange of Securities shall be the valid obligations of the Company and, if applicable, the Guarantors evidencing the same debt, and entitled to the same benefits under this Indenture, as the Securities surrendered upon such registration of transfer or exchange.

Every Security presented or surrendered for registration of transfer or for exchange shall (if so required by the Company or the Trustee) be duly endorsed, or be accompanied by a written instrument of transfer in form satisfactory to the Company and the Security Registrar duly executed, by the Holder thereof or such Holder’s attorney duly authorized in writing.

No service charge shall be made for any registration of transfer or exchange of Securities, but the Company may require payment of a sum sufficient to cover any tax or other governmental charge that may be imposed in connection with any registration of transfer or exchange of Securities, other than exchanges pursuant to Section 3.4, Section 9.6 or Section 11.7 not involving any transfer.

The Company shall not be required (a) to issue, register the transfer of or exchange Securities of any series during a period beginning at the opening of business 15 days before the day of the mailing of a notice of redemption of Securities of that series selected for redemption under Section 11.3 and ending at the close of business on the day of such mailing, or (b) to register the transfer of or exchange any Security so selected for redemption in whole or in part, except the unredeemed portion of any Security being redeemed in part.

Notwithstanding any other provisions of this Indenture and except as otherwise specified with respect to any particular series of Securities as contemplated by Section 3.1, a Global Security representing all or a portion of the Securities of a series may not be transferred, except as a whole by the Depositary for such series to a nominee of such Depositary or by a nominee of such Depositary to such Depositary or another nominee of such Depositary or by such Depositary or any such nominee to a successor Depositary for such series or a nominee of such successor Depositary. Every Security authenticated and delivered upon registration of, transfer of, or in exchange for or in lieu of, a Global Security shall be a Global Security except as provided in the two paragraphs immediately following.

If at any time the Depositary for any Securities of a series represented by one or more Global Securities notifies the Company that it is unwilling or unable to continue as Depositary for such Securities or if at any time the Depositary for such Securities shall no longer be eligible to continue as Depositary under Section 3.1 or ceases to be a clearing agency registered under the Exchange Act, the Company shall appoint a successor Depositary with respect to such Securities. If a successor Depositary for such Securities is not appointed by the Company within 90 days after the Company receives such notice or becomes aware of such ineligibility, the Company’s election pursuant to Section 3.1 that such Securities be represented by one or more Global Securities shall no longer be effective and the Company and, if applicable, the Guarantors will execute and the Trustee, upon receipt of a Company Order for the authentication and delivery of Definitive Securities of such series, will authenticate and deliver, Securities, with a notation of the Securities Guarantee, if applicable, executed by the Guarantors, of such series in definitive registered form without coupons, in any authorized denominations, in an aggregate principal amount equal to the principal amount of the Global Security or Securities representing such Securities in exchange for such Global Security or Securities registered in the names of such Persons as the Depositary shall direct.

If specified by the Company pursuant to Section 3.1 with respect to Securities represented by a Global Security, the Depositary for such Global Security may surrender such Global Security in exchange in whole or in part for Securities of the same series and tenor in definitive registered form on such terms as are acceptable to the Company, the Trustee and such Depositary. Thereupon, the Company and, if applicable, the Guarantors shall execute, and the Trustee, upon receipt of a Company Order for the authentication and delivery of Securities in definitive registered form, shall authenticate and deliver, without service charge:

(a) to the Person specified by such Depositary a new Security or Securities, with a notation of the Securities Guarantee, if applicable, executed by the Guarantors, of the same series and tenor, of any authorized denominations as requested by such Person, in an aggregate principal amount equal to and in exchange for such Person’s beneficial interest in the Global Security; and

(b) to such Depositary a new Global Security, with a notation of the Securities Guarantee, if applicable, executed by the Guarantors, in a denomination equal to the difference, if any, between the principal amount of the surrendered Global Security and the aggregate principal amount of Securities authenticated and delivered pursuant to clause (a) above.

Every Person who takes or holds any beneficial interest in a Global Security agrees that:

(a) the Company, the Guarantors (if applicable) and the Trustee may deal with the Depositary as sole owner of the Global Security and as the authorized representative of such Person;

(b) such Person’s rights in the Global Security shall be exercised only through the Depositary and shall be limited to those rights established by law and agreement between such Person and the Depositary and/or direct and indirect participants of the Depositary;

(c) the Depositary and its participants make book-entry transfers of beneficial ownership among, and receive and transmit distributions of the principal of (and premium, if any) and interest on the Global Securities to, such Persons in accordance with their own procedures; and

(d) none of the Company, the Guarantors (if applicable), the Trustee, nor any agent of any of them will have any responsibility or liability for any aspect of the records relating to or payments made on account of beneficial ownership interests of a Global Security or for maintaining, supervising or reviewing any records relating to such beneficial ownership interests.

Section 3.6. Mutilated, Destroyed, Lost and Stolen Securities .

If any mutilated Security is surrendered to the Trustee, together with such security or indemnity as may be required by the Company, the Guarantors (if applicable) or the Trustee to save each of them and any agent of any of them harmless, then, in the absence of notice to the Company or the Trustee that such Security has been acquired by a protected purchaser, the Company and, if applicable, the Guarantors shall execute and the Trustee shall authenticate and deliver in exchange therefor a new Security, with a notation of the Securities Guarantee, if applicable, executed by the Guarantors, of the same series and of like tenor and principal amount and bearing a number not contemporaneously outstanding.

If there shall be delivered to the Company, the Guarantors (if applicable) and the Trustee (a) evidence to their satisfaction of the destruction, loss or theft of any Security and (b) such security or indemnity as may be required by them to save each of them and any agent of any of them harmless, then, in the absence of notice to the Company or the Trustee that such Security has been acquired by a protected purchaser, the Company and, if applicable, the Guarantors shall execute and upon receipt of a Company Order the Trustee shall authenticate and deliver, in lieu of any such destroyed, lost or stolen Security, a new Security, with a notation of the Securities Guarantee, if applicable, executed by the Guarantors, of the same series and of like tenor and principal amount and bearing a number not contemporaneously outstanding.

In case any such mutilated, destroyed, lost or stolen Security has become or is about to become due and payable, the Company in its discretion may, instead of issuing a new Security, pay such Security (without surrender thereof save in the case of a mutilated Security).

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

Every new Security of any series issued pursuant to this Section in lieu of any destroyed, lost or stolen Security shall constitute an original additional contractual obligation of the Company and, if applicable, the Guarantors, regardless of whether the destroyed, lost or stolen Security shall be at any time enforceable by anyone, and shall be entitled to all the benefits of this Indenture equally and proportionately with any and all other Securities of that series duly issued hereunder.

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

Section 3.7. Payment of Interest; Interest Rights Preserved .

The Company will pay or cause to be paid the principal of, premium, if any, and interest on, the Securities on the dates and in the manner provided in the Securities. Principal, premium, if any, and interest will be considered paid on the date due if the Paying Agent, if other than the Company, holds as of 11:00 a.m., Eastern Time, on such due date money deposited by the Company in immediately available funds and designated for and sufficient to pay all principal, premium, if any, and interest then due.

The Company will pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue principal at the rate equal to the applicable interest rate on the Securities to the extent lawful; it will pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue installments of interest (without regard to any applicable grace period) at the same rate to the extent lawful.

Except as otherwise provided as contemplated by Section 3.1 with respect to any series of Securities, interest on any Security that is payable, and is punctually paid or duly provided for, on any Interest Payment Date shall be paid to the Person in whose name that Security (or one or more Predecessor Securities) is registered at the close of business on the Regular Record Date for such interest.

Any interest on any Security of any series that is payable, but is not punctually paid or duly provided for, on any Interest Payment Date (herein called “ Defaulted Interest ”) shall forthwith cease to be payable to the Holder on the relevant Regular Record Date by virtue of having been such Holder, and such Defaulted Interest may be paid by the Company, at its election in each case, as provided in clause (a) or (b) below:

(a) The Company may elect to make payment of any Defaulted Interest to the Persons in whose names the Securities of such series (or their respective Predecessor Securities) are registered at the close of business on a Special Record Date for the payment of such Defaulted Interest, which shall be fixed in the following manner. The Company shall notify the Trustee in writing of the amount of Defaulted Interest proposed to be paid on each Security of such series and the date of the proposed payment, and at the same time the Company shall deposit with the Trustee an amount of money equal to the aggregate amount proposed to be paid in respect of such Defaulted Interest or shall make arrangements satisfactory to the Trustee for such deposit prior to the date of the proposed payment, such money when deposited to be held in trust for the benefit of the Persons entitled to such Defaulted Interest as in this clause provided. Thereupon, the Trustee shall fix a Special Record Date for the payment of such Defaulted Interest that shall be not more than 15 days and not less than 10 days prior to the date of the proposed payment and not less than 10 days after the receipt by the Trustee of the notice of the proposed payment. The Trustee shall promptly notify the Company of such Special Record Date and, in the name and at the expense of the Company, shall cause notice of

the proposed payment of such Defaulted Interest and the Special Record Date therefor to be mailed, first-class postage prepaid, to each Holder of Securities of such series at such Holder’s address as it appears in the Security Register, not less than 10 days prior to such Special Record Date. Notice of the proposed payment of such Defaulted Interest and the Special Record Date therefor having been so mailed, such Defaulted Interest shall be paid to the Persons in whose names the Securities of such series (or their respective Predecessor Securities) are registered at the close of business 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 on the Securities of any series in any other lawful manner not inconsistent with the requirements of any securities exchange on which such 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, 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.

Section 3.8. Persons Deemed Owners .

Except as otherwise provided as contemplated by Section 3.1 with respect to any series of Securities, prior to due presentment of a Security for registration of transfer, the Company, the Trustee and, if applicable, the Guarantors and any agent thereof may treat the Person in whose name such Security is registered as the owner of such Security for the purpose of receiving payment of principal of and any premium and (subject to Section 3.5 and Section 3.7) any interest on such Security and for all other purposes whatsoever, regardless of whether such Security be overdue, and none of the Company, the Trustee, the Guarantors (if applicable) nor any agent of any of them shall be affected by notice to the contrary.

No holder of any beneficial interest in any Global Security held on its behalf by a Depositary shall have any rights under this Indenture with respect to such Global Security, and such Depositary may be treated by the Company, the Trustee, and, if applicable, the Guarantors and any agent of any thereof as the owner of such Global Security for all purposes whatsoever.

Section 3.9. Cancellation .

All Securities surrendered for payment, redemption, purchase, registration of transfer or exchange or for credit against any sinking fund payment shall, if surrendered to any Person other than the Trustee, be delivered to the Trustee and shall be promptly canceled by it. The Company may at any time deliver to the Trustee for cancellation any Securities previously authenticated and delivered hereunder that the Company may have acquired in any manner whatsoever, and may deliver to the Trustee (or to any other Person for delivery to the Trustee) for cancellation any Securities previously authenticated hereunder that the Company has not issued and sold, and all Securities so delivered shall be promptly canceled by the Trustee. No Securities shall be authenticated in lieu of or in exchange for any Securities canceled as provided in this Section,

except as expressly permitted by this Indenture. All canceled Securities held by the Trustee shall be disposed of in accordance with its customary practices, and the Trustee shall thereafter deliver to the Company a certificate with respect to such disposition from time to time upon written request.

Section 3.10. Computation of Interest .

Except as otherwise specified as contemplated by Section 3.1 for Securities of any series, interest on the Securities of each series shall be computed on the basis of a 360-day year comprised of twelve 30-day months.

Section 3.11. CUSIP or CINS Numbers .

The Company in issuing the Securities may use “CUSIP” or “CINS” numbers (if then generally in use, and in addition to the other identification numbers printed on the Securities), and, if so, the Trustee shall use “CUSIP” or “CINS” 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 “CUSIP” or “CINS” 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 “CINS” numbers.

ARTICLE FOUR
SATISFACTION AND DISCHARGE

Section 4.1. Satisfaction and Discharge of Indenture .

This Indenture will be discharged and will cease to be of further effect as to all Securities issued hereunder (except as to surviving rights of registration of transfer or exchange of the Notes and as otherwise specified in this Indenture), when:

(a) either

(i) all Securities that have been authenticated, except lost, stolen, mutilated or destroyed Securities that have been replaced or paid and Securities for whose payment money has been deposited in trust and thereafter repaid to the Company, have been delivered to the Trustee for cancellation; or

(ii) all Securities that have not been delivered to the Trustee for cancellation have become due and payable by reason of the mailing of a notice of redemption or otherwise or will become due and payable within one year and the Company or any Guarantor has irrevocably deposited or caused to be deposited with the Trustee as trust funds in trust solely for the benefit of the Holders, cash in U.S. dollars, non-callable Government Securities, or a combination of cash in U.S. dollars and non-callable Government Securities, in amounts as will be sufficient, without consideration of any reinvestment of interest, to pay and discharge the entire Debt on the Securities not delivered to the Trustee for

cancellation for principal, premium, if any, and accrued interest to the date of Stated Maturity or redemption;

(b) no Default or Event of Default has occurred and is continuing on the date of the deposit (other than a Default or Event of Default resulting from the borrowing of funds to be applied to such deposit or the grant of liens securing such borrowing);

(c) such deposit will not result in a breach or violation of, or constitute a default under, any material agreement or instrument (other than this Indenture) to which the Company or any Guarantor is a party or by which the Company or any Guarantor is bound;

(d) the Company or any Guarantor has paid or caused to be paid all sums payable by it under this Indenture;

(e) the Company has delivered irrevocable instructions to the Trustee to apply the deposited money toward the payment of the Securities at their Stated Maturity or on the Redemption Date, as the case may be; and

(f) the Company has delivered to the Trustee (i) an Officers’ Certificate, stating that all conditions precedent set forth in clauses (a) through (e) above have been satisfied, and (ii) an Opinion of Counsel, stating that all conditions precedent set forth in clauses (c) and (e) above have been satisfied.

Notwithstanding the satisfaction and discharge of this Indenture, (x) the obligations of the Company, the Guarantors, if any, and the Trustee under Section 3.5, the obligations of the Company to the Trustee under Section 6.7, the obligations of the Trustee to any Authenticating Agent under Section 6.14 and the right of the Trustee to resign under Section 6.10 shall survive, and (y) if money shall have been deposited with the Trustee pursuant to clause (a) of this Section, the obligations of the Company and the Trustee under Section 4.2, Section 6.6 and Section 10.2 and the last paragraph of Section 10.3 shall survive.

Section 4.2. Application of Trust Money .

Subject to the provisions of Section 10.3, all money deposited with the Trustee pursuant to Section 4.1 shall be held in trust and applied by it, in accordance with the provisions of the Securities and this Indenture, to the payment, either directly or through any Paying Agent (including the Company acting as its own Paying Agent) as the Trustee may determine, to the Persons entitled thereto, of the principal (and any premium, if any) and interest for whose payment such money has been deposited with the Trustee, but such money need not be segregated from other funds except to the extent required by law.

If the Trustee or Paying Agent is unable to apply any money or Government Securities in accordance with Section 4.1 by reason of any legal proceeding or by reason of any order or judgment of any court or governmental authority enjoining, restraining or otherwise prohibiting such application, the Company’s and any Guarantor’s obligations under this Indenture and the Securities shall be revived and reinstated as though no deposit had occurred pursuant to Section 4.1 hereof; provided that if the Company has made any payment of principal of,

premium, if any, or interest on, any Securities because of 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 or Government Securities held by the Trustee or Paying Agent.

ARTICLE FIVE
REMEDIES

Section 5.1. Events of Default .

“ Event of Default, ” wherever used herein with respect to Securities of any series, means any one of the following events (whatever the reason for such Event of Default and whether it shall be voluntary or involuntary or be effected by operation of law or pursuant to any judgment, decree or order of any court or any order, rule or regulation of any administrative or governmental body):

(a) default in the payment of any interest upon any Security of that series when it becomes due and payable, and continuance of such default for a period of 30 days; or

(b) default in the payment of the principal of (or premium, if any, on) any Security of that series at its Maturity; or

(c) default in the performance, or breach, of any covenant set forth in Article Ten in this Indenture (other than a covenant a default in the performance of which or the breach of which is elsewhere in this Section specifically dealt with or which has expressly been included in this Indenture solely for the benefit of series of Securities other than that series), and continuance of such default or breach for a period of 90 days after there has been given, by registered or certified mail, to the Company by the Trustee or to the Company and the Trustee by the Holders of at least 25% in aggregate principal amount of the Outstanding Securities of that series a written notice specifying such default or breach and requiring it to be remedied and stating that such notice is a “Notice of Default” hereunder; or

(d) default in the performance, or breach, of any covenant in this Indenture (other than a covenant in Article Ten or any other covenant a default in the performance of which or the breach of which is elsewhere in this Section specifically dealt with or which has expressly been included in this Indenture solely for the benefit of series of Securities other than that series), and continuance of such default or breach for a period of 180 days after there has been given, by registered or certified mail, to the Company by the Trustee or to the Company and the Trustee by the Holders of at least 25% in aggregate principal amount of the Outstanding Securities of that series a written notice specifying such default or breach and requiring it to be remedied and stating that such notice is a “Notice of Default” hereunder; or

(e) the Company or any Guarantor pursuant to or within the meaning of any Bankruptcy Law (i) commences a voluntary case, (ii) consents to the entry of any order for relief against the Company or any Guarantor in an involuntary case, (iii) consents to the appointment of a Custodian of the Company or any Guarantor or for all or

substantially all of the property of the Company or any Guarantor, or (iv) makes a general assignment for the benefit of the creditors of the Company or any Guarantor; or

(f) a court of competent jurisdiction enters an order or decree under any Bankruptcy Law that (i) is for relief against the Company or any Guarantor in an involuntary case, (ii) appoints a Custodian of the Company or any Guarantor or for all or substantially all of the property of the Company or any Guarantor, or (iii) orders the liquidation of the Company or any Guarantor; and the order or decree remains unstayed and in effect for 60 consecutive days; or

(g) default in the deposit of any sinking fund payment when due; or

(h) the failure of any Securities Guarantee required with respect to Securities of that series to be in full force and effect, except as provided in this Indenture or the terms of such Securities; or

(i) any other Event of Default provided with respect to Securities of that series in accordance with Section 3.1.

Section 5.2. Acceleration of Maturity; Rescission and Annulment .

If an Event of Default with respect to Securities of any series at the time Outstanding occurs and is continuing, then in every such case the Trustee or the Holders of 25% in aggregate principal amount of the Outstanding Securities of that series may declare the principal amount (or, if the Securities of that series are Original Issue Discount Securities, such portion of the principal amount as may be specified in the terms of that series) and all accrued and unpaid interest of all of the Securities of that series to be due and payable immediately, by a notice in writing to the Company specifying the respective Event of Default and that it is a notice of acceleration (and to the Trustee if given by Holders), and upon any such declaration such principal amount (or specified amount) shall become immediately due and payable. Notwithstanding the foregoing, if an Event of Default specified in clause (e) or (f) of Section 5.1 occurs, the Securities of any series at the time Outstanding shall be due and payable immediately without further action or notice.

At any time after such a declaration of acceleration with respect to Securities of any series has been made and before a judgment or decree for payment of the money due has been obtained by the Trustee as hereinafter in this Article Five provided, the Holders of a majority in aggregate principal amount of the Outstanding Securities of that series, by written notice to the Company and the Trustee, may rescind and annul such declaration and its consequences if:

(a) the Company or, if applicable, one or more of the Guarantors has paid or deposited with the Trustee a sum sufficient to pay:

(i) all overdue interest on all Securities of that series;

(ii) the principal of (and premium, if any, on) any Securities of that series that has become due otherwise than by such declaration of acceleration and any interest thereon at the rate or rates prescribed therefor in such Securities;

(iii) to the extent that payment of such interest is lawful, interest upon overdue interest at the rate or rates prescribed therefor in such Securities; and

(iv) all sums paid or advanced by the Trustee hereunder and the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel; and

(b) all Events of Default with respect to Securities of that series, other than the non-payment of the principal of Securities of that series that has become due solely by such declaration of acceleration, have been cured or waived as provided in Section 5.13.

No such rescission shall affect any subsequent default or impair any right consequent thereon.

Section 5.3. Collection of Indebtedness and Suits for Enforcement by Trustee .

The Company covenants that if:

(a) default is made in the payment of any installment of interest on any Security when such interest becomes due and payable and such default continues for a period of 30 days; or

(b) default is made in the payment of the principal of (or premium, if any, on) any Security at the Maturity thereof;

the Company will, upon demand of the Trustee, pay to it, for the benefit of the Holders of such Securities, the whole amount then due and payable on such Securities for principal and any premium and interest and, to the extent that payment of such interest shall be legally enforceable, interest on any overdue principal and any premium and on any overdue interest, at the rate or rates prescribed therefor in such Securities, and, in addition thereto, such further amount as shall be sufficient to cover the costs and expenses of collection, including the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel.

If the Company fails to pay such amounts forthwith upon such demand, the Trustee, in its own name and as trustee of an express trust, may institute a judicial proceeding for the collection of the sums so due and unpaid, may prosecute such proceeding to judgment or final decree and may enforce the same against the Company or, if applicable, the Guarantors or any other obligor upon such Securities and collect the moneys adjudged or decreed to be payable in the manner provided by law out of the property of the Company or, if applicable, the Guarantors or any other obligor upon such Securities, wherever situated.

If an Event of Default with respect to Securities of any series occurs and is continuing, the Trustee may, in its discretion, proceed to protect and enforce its rights and the rights of the Holders of Securities of such series by such appropriate judicial proceedings as the Trustee shall deem most effectual to protect and enforce any such rights, whether for the specific enforcement of any covenant or agreement in this Indenture or in aid of the exercise of any power granted herein, or to enforce any other proper remedy.

Section 5.4. Trustee May File Proofs of Claim .

In case of the pendency of any receivership, insolvency, liquidation, bankruptcy, reorganization, arrangement, adjustment, composition or other judicial proceeding relative to the Company or, if applicable, any Guarantor or any other obligor upon the Securities, their property or their creditors, the Trustee (irrespective of whether the principal of the Securities shall then be due and payable as therein expressed or by declaration or otherwise and irrespective of whether the Trustee shall have made any demand on the Company or, if applicable, the Guarantors for the payment of overdue principal or interest) shall be entitled and empowered, by intervention in such proceeding or otherwise:

(a) to file and prove a claim for the whole amount of principal (and premium, if any) and interest owing and unpaid in respect of the Securities and to file such other papers or documents as may be necessary or advisable in order to have the claims of the Trustee (including any claim for the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel, and any other amounts due the Trustee under Section 6.7) and of the Holders allowed in such judicial proceeding; and

(b) to collect and receive any moneys or other property payable or deliverable on any such claims and to distribute the same;

and any custodian, receiver, assignee, trustee, liquidator, sequestrator or other similar official in any such judicial proceeding is hereby authorized by each Holder to make such payments to the Trustee and, if the Trustee shall consent to the making of such payments directly to the Holders, to pay to the Trustee any amount due it for the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel, and any other amounts due the Trustee under Section 6.7.

No provision of this Indenture shall be deemed to authorize the Trustee to authorize or consent to or accept or adopt on behalf of any Holder any plan of reorganization, compromise, arrangement, adjustment or composition affecting the Securities or, if applicable, the Securities Guarantee or the rights of any Holder thereof or to authorize the Trustee to vote in respect of the claim of any Holder in any such proceeding; provided , however , that the Trustee may, on behalf of the Holders, vote for the election of a trustee in bankruptcy or similar official and be a member of a creditors’ or other similar committee.

Section 5.5. Trustee May Enforce Claims Without Possession of Securities .

All rights of action and claims under this Indenture or the Securities may be prosecuted and enforced by the Trustee without the possession of any of the Securities or the production thereof in any proceeding relating thereto, and any such proceeding instituted by the Trustee shall be brought in its own name as trustee of an express trust, and any recovery of judgment shall, after provision for the payment of the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel, be for the ratable benefit of the Holders of the Securities in respect of which such judgment has been recovered.

Section 5.6. Application of Money Collected .

Any money collected by the Trustee pursuant to this Article Five and any money or other property distributable in respect of the Company’s obligations under this Indenture after the occurrence of an Event of Default shall be applied in the following order, at the date or dates fixed by the Trustee and, in case of the distribution of such money on account of principal or any premium or interest, upon presentation of the Securities and the notation thereon of the payment if only partially paid and upon surrender thereof if fully paid:

FIRST: To the payment of all amounts due the Trustee under Section 6.7;

SECOND: To the payment of the amounts then due and unpaid for principal of and any premium and interest on the Securities in respect of which or for the benefit of which such money has been collected, ratably, without preference or priority of any kind, according to the amounts due and payable on such Securities for principal and any premium and interest, respectively; and

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

Section 5.7. Limitation on Suits .

No Holder of any Security of any series shall have any right to institute any proceeding, judicial or otherwise, with respect to this Indenture (including, if applicable, the Securities Guarantee), or for the appointment of a receiver or trustee, or for any other remedy hereunder, unless:

(a) such Holder has previously given written notice to the Trustee of a continuing Event of Default with respect to the Securities of that series;

(b) the Holders of not less than 25% in aggregate principal amount of the Outstanding Securities of that series shall have made written request to the Trustee to institute proceedings in respect of such Event of Default in its own name as Trustee hereunder;

(c) such Holder or Holders have offered to the Trustee reasonable security or indemnity against the costs, expenses and liabilities to be incurred in compliance with such request;

(d) the Trustee for 60 days after its receipt of such notice, request and offer of security or indemnity has failed to institute any such proceeding; and

(e) no direction inconsistent with such written request has been given to the Trustee during such 60-day period by the Holders of a majority in aggregate principal amount of the Outstanding Securities of that series;

it being understood and intended that no one or more of such Holders of a Security shall have any right in any manner whatsoever by virtue of, or by availing of, any provision of this Indenture to affect, disturb or prejudice the rights of any other Holder of the same series of

Security, or to obtain or to seek to obtain priority or preference over any other Holder of the same series of Security or to enforce any right under this Indenture, except in the manner herein provided and for the equal and ratable benefit of all Holders of the same series of Security.

Section 5.8. Unconditional Right of Holders to Receive Principal, Premium and Interest .

Notwithstanding any other provision in this Indenture, the Holder of any Security shall have the right, which is absolute and unconditional, to receive payment of the principal of and any premium and (subject to Section 3.5 and Section 3.7) interest on such Security on the Stated Maturity or Maturities expressed in such Security (or, in the case of redemption or offer by the Company to purchase the Securities as required by this Indenture, on the Redemption Date or purchase date, as applicable) and to institute suit for the enforcement of any such payment, and such rights shall not be impaired without the consent of such Holder.

Section 5.9. Restoration of Rights and Remedies .

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

Section 5.10. Rights and Remedies Cumulative .

Except as otherwise provided with respect to the replacement or payment of mutilated, destroyed, lost or stolen Securities in the last paragraph of Section 3.6, no right or remedy herein conferred upon or reserved to the Trustee or to the Holders is intended to be exclusive of any other right or remedy, and every right and remedy shall, to the extent permitted by law, be cumulative and in addition to every other right and remedy given hereunder or now or hereafter existing at law or in equity or otherwise. The assertion or employment of any right or remedy hereunder, or otherwise, shall not prevent the concurrent assertion or employment of any other appropriate right or remedy.

Section 5.11. Delay or Omission Not Waiver .

To the fullest extent permitted by applicable law, no delay or omission of the Trustee or of any Holder of any Securities to exercise any right or remedy accruing upon any Event of Default shall impair any such right or remedy or constitute a waiver of any such Event of Default or an acquiescence therein. Every right and remedy given by this Article Five or by law to the Trustee or to the Holders may be exercised from time to time, and as often as may be deemed expedient, by the Trustee or by the Holders, as the case may be.

Section 5.12. Control by Holders .

The Holders of a majority in aggregate principal amount of the Outstanding Securities of any series shall have the right to direct the time, method and place of conducting any proceeding

for any remedy available to the Trustee, or exercising any trust or power conferred on the Trustee, with respect to the Securities of such series; provided , however , that:

(a) such direction shall not be in conflict with any rule of law or with this Indenture;

(b) the Trustee may take any other action deemed proper by the Trustee that is not inconsistent with such direction; and

(c) subject to the provisions of Section 6.1, the Trustee shall have the right to decline to follow any such direction if the Trustee shall determine that the proceeding so directed would involve the Trustee in personal liability.

Section 5.13. Waiver of Past Defaults .

By written notice to the Company and the Trustee, the Holders of a majority in aggregate principal amount of the Outstanding Securities of any series may on behalf of the Holders of all the Securities of such series waive any past default hereunder with respect to such series and its consequences, except:

(a) a continuing default in the payment of the principal of or any premium, if any, or interest on any Security of such series; or

(b) a default in respect of a covenant or provision hereof that under Article Nine cannot be modified or amended without the consent of the Holder of each Outstanding Security of such series affected.

Upon any such waiver, such default shall cease to exist, and any Event of Default arising therefrom shall be deemed to have been cured, for every purpose of this Indenture, but no such waiver shall extend to any subsequent or other default or impair any right consequent thereon.

Section 5.14. Undertaking for Costs .

All parties to this Indenture agree, and each Holder of any Security by such Holder’s acceptance thereof shall be deemed to have agreed, that any court may in its discretion require, in any suit for the enforcement of any right or remedy under this Indenture, or in any suit against the Trustee for any action taken, suffered or omitted by it as Trustee, the filing by any party litigant, other than the Trustee, in such suit of an undertaking to pay the costs of such suit, and that such court may in its discretion assess reasonable costs, including reasonable attorneys’ fees, against any party litigant in such suit, having due regard to the merits and good faith of the claims or defenses made by such party litigant; but the provisions of this Section 5.14 shall not apply to any suit instituted by the Company, to any suit instituted by the Trustee, to any suit instituted by any Holder, or group of Holders, holding in the aggregate more than 10% in aggregate principal amount of the Outstanding Securities of any series, or to any suit instituted by any Holder for the enforcement of the payment of the principal of (or premium, if any) or interest on any Security on or after the Stated Maturity or Maturities expressed in such Security (or, in the case of redemption or offer by the Company to purchase the Securities as required by this Indenture, on or after the Redemption Date or purchase date, as applicable).

Section 5.15. Waiver of Stay, Extension or Usury Laws .

Each of the Company and the Guarantors covenants (to the extent that it may lawfully do so) that it will not at any time insist upon, or plead, or in any manner whatsoever claim or take the benefit or advantage of, any stay, extension or usury law wherever enacted, now or at any time hereafter in force, which may affect the covenants or the performance of this Indenture; and each of the Company and the Guarantors (to the extent that it may lawfully do so) hereby expressly waives all benefit or advantage of any such law and covenants that it will not hinder, delay or impede the execution of any power herein granted to the Trustee, but will suffer and permit the execution of every such power as though no such law had been enacted.

ARTICLE SIX
THE TRUSTEE

Section 6.1. Certain Duties and Responsibilities .

(a) Except during the continuance of an Event of Default with respect to the Securities of a particular series:

(i) the Trustee undertakes to perform such duties and only such duties as are specifically set forth in this Indenture and as are provided by the Trust Indenture Act with respect to the Securities of such series, and no implied covenants or obligations shall be read into this Indenture against the Trustee; and

(ii) in the absence of bad faith on its part, the Trustee may conclusively rely, as to the truth of the statements and the correctness of the opinions expressed therein, upon certificates or opinions furnished to the Trustee and conforming to the requirements of this Indenture; but in the case of any such certificates or opinions that by any provision hereof are specifically required to be furnished to the Trustee, the Trustee shall be under a duty to examine the same to determine whether they conform to the requirements of this Indenture.

(b) In case an Event of Default has occurred and is continuing with respect to the Securities of a particular series, the Trustee shall exercise with respect to the Securities of such series such of the rights and powers vested in it by this Indenture, and use the same degree of care and skill in their exercise, as a prudent man would exercise or use under the circumstances in the conduct of his own affairs.

(c) No provision of this Indenture shall be construed to relieve the Trustee from liability for its own negligent action, its own negligent failure to act, or its own bad faith or willful misconduct, except that:

(i) this Subsection shall not be construed to limit the effect of Subsections (a) or (d) of this Section;

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

(iii) the Trustee shall not be liable with respect to any action taken or omitted to be taken by it in good faith in accordance with the direction of the Holders of a majority in aggregate principal amount of the Outstanding Securities of any series, given pursuant to Section 5.12, relating to the time, method and place of conducting any proceeding for any remedy available to the Trustee, or exercising any trust or power conferred upon the Trustee, under this Indenture with respect to the Securities of such series.

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

(e) Regardless of whether therein expressly so provided, every provision of this Indenture relating to the conduct or affecting the liability of or affording protection to the Trustee shall be subject to the provisions of this Section.

Section 6.2. Notice of Defaults .

Within 90 days after the occurrence of any Default hereunder with respect to the Securities of any series, the Trustee shall transmit by mail to all Holders of Securities of such series, as their names and addresses appear in the Security Register, notice of such Default hereunder known to the Trustee, unless such Default shall have been cured or waived; provided , however , that, except in the case of a Default in the payment of the principal of or any premium or interest on any Security of such series or in the payment of any sinking fund installment with respect to Securities of such series, the Trustee may withhold from Holders of Securities notice of any continuing Default or Event of Default if the Trustee in good faith determines that the withholding of such notice is in the interest of the Holders of Securities of such series; and, provided , further , that in the case of any Default of the character specified in Section 5.1(c) with respect to Securities of such series, no such notice to Holders shall be given until at least 60 days after the occurrence thereof and that in the case of any Default of the character specified in Section 5.1(d) with respect to Securities of such series, no such notice to Holders shall be given until at least 90 days after the occurrence thereof.

Section 6.3. Certain Rights of Trustee .

Subject to the provisions of Section 6.1:

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

(b) any request or direction of the Company or a Guarantor mentioned herein shall be sufficiently evidenced by a Company Request or Company Order (except as may otherwise be provided with respect to delivery of any Security to the Trustee for

authentication and delivery pursuant to Section 3.3, which shall be sufficiently evidenced as provided therein) and any resolution of the Board of Directors may be sufficiently evidenced by a Board Resolution;

(c) whenever in the administration of this Indenture the Trustee shall deem it desirable that a matter be proved or established prior to taking, suffering or omitting any action hereunder, the Trustee (unless other evidence be herein specifically prescribed) shall be entitled to receive and may, in the absence of bad faith on its part, conclusively rely upon an Officers’ Certificate;

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

(e) the Trustee shall be under no obligation to exercise any of the rights or powers vested in it by this Indenture at the request or direction of any of the Holders pursuant to this Indenture, unless such Holders shall have offered to the Trustee security or indemnity reasonably satisfactory to the Trustee against the costs, expenses and liabilities that might be incurred by it in compliance with such request or direction;

(f) the Trustee shall not be bound to make any investigation into the facts or matters stated in any resolution, certificate, statement, instrument, opinion, report, notice, request, direction, consent, order, bond, debenture, note, other evidence of indebtedness or other paper or document, but the Trustee, in its discretion, may make such further inquiry or investigation into such facts or matters as it may see fit, and, if the Trustee shall determine to make such further inquiry or investigation, it shall be entitled to examine the books, records and premises of the Company, personally or by agent or attorney at the sole cost of the Company, and shall incur no liability or additional liability of any kind by reason of such inquiry or investigation;

(g) the Trustee may execute any of the trusts or powers hereunder or perform any duties hereunder either directly or by or through agents or attorneys and the Trustee shall not be responsible for any misconduct or negligence on the part of any agent or attorney appointed with due care by it hereunder and shall not be responsible for the supervision of officers and employees of such agents or attorneys;

(h) the Trustee may request that the Company and, if applicable, the Guarantors deliver an Officers’ Certificate setting forth the names of individuals or titles of officers authorized at such time to take specified actions pursuant to this Indenture, which Officers’ Certificate may be signed by any person authorized to sign an Officers’ Certificate, including any person specified as so authorized in any such certificate previously delivered and not superseded;

(i) the Trustee shall not be deemed to have notice or be charged with knowledge of any Default or Event of Default unless a Responsible Officer of the Trustee has received written notice of any event that is in fact such a Default or Event of Default

at the Corporate Trust Office of the Trustee, and such notice references the Securities and this Indenture;

(j) the Trustee shall not be liable for any action taken, suffered, or omitted to be taken by it in good faith and believed by it to be authorized or within the discretion or rights or powers conferred upon it by this Indenture;

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

(l) anything in this Indenture notwithstanding, in no event shall the Trustee be liable for special, indirect, punitive or consequential loss or damage of any kind whatsoever (including but not limited to loss of profit), even if the Trustee has been advised as to the likelihood of such loss or damage and regardless of the form of action.

Section 6.4. Not Responsible for Recitals or Issuance of Securities .

The recitals contained herein and in the Securities and the notations of the Subsidiary Guarantee, except the Trustee’s certificates of authentication, shall be taken as the statements of the Company or, if applicable, the Guarantors, and the Trustee or any Authenticating Agent assumes no responsibility for their correctness. Neither the Trustee nor any Authenticating Agent makes any representations as to the validity or sufficiency of this Indenture or of the Securities or the Subsidiary Guarantee, if any. The Trustee or any Authenticating Agent shall not be accountable for the use or application by the Company of Securities or the proceeds thereof.

Section 6.5. May Hold Securities .

The Trustee, any Authenticating Agent, any Paying Agent, any Security Registrar or any other agent of the Company or, if applicable, any Guarantor, in its individual or any other capacity, may become the owner or pledgee of Securities and, subject to Sections 310(b) and 311 of the Trust Indenture Act and Section 6.8, Section 6.9 and Section 6.13, may otherwise deal with the Company or, if applicable, the Guarantors with the same rights it would have if it were not Trustee, Authenticating Agent, Paying Agent, Security Registrar or such other agent.

Section 6.6. Money Held in Trust .

Money held by the Trustee in trust hereunder need not be segregated from other funds except to the extent required by law. The Trustee shall be under no liability for interest on any money received by it hereunder except as otherwise agreed in writing with the Company or, if applicable, one or more of the Guarantors.

Section 6.7. Compensation and Reimbursement .

The Company agrees:

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

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

(c) to indemnify each of the Trustee and its officers, directors, agents and employees for, and to hold it harmless against, any loss, liability or expense incurred without negligence or willful misconduct on its part, arising out of or in connection with the acceptance or administration of the trust or trusts hereunder, including the costs and expenses of defending itself against any claim (whether asserted by the Company or any Holder or any other Person) or liability in connection with the exercise or performance of any of its powers or duties hereunder or in connection with enforcing the provisions of this Section.

As security for the performance of the obligations of the Company under this Section, the Trustee shall have a lien prior to the Securities upon all property and funds held or collected by the Trustee as such, except funds held in trust for the payment of principal of (and premium, if any) or interest on particular Securities.

Without limiting any rights available to the Trustee under this Indenture or applicable law, when the Trustee incurs expenses or renders services in connection with an Event of Default specified in Section 5.1(e) or Section 5.1(f), the expenses (including the reasonable charges and expenses of its counsel) and the compensation for the services of the Trustee are intended to constitute expenses of administration under any applicable Bankruptcy Law.

“ Trustee ” for purposes of this Section shall include any predecessor Trustee; provided , however , that the negligence, willful misconduct or bad faith of any Trustee hereunder shall not affect the rights of any other Trustee hereunder.

The provisions of this Section 6.7 shall survive the satisfaction and discharge or the termination for any reason of this Indenture, the satisfaction and discharge or Legal Defeasance of the Securities and the resignation or removal of the Trustee.

Section 6.8. Disqualification; Conflicting Interests .

This Indenture will always have a trustee that satisfies the requirements of Sections 310(a)(1), (2) and (5) of the Trust Indenture Act. The Trustee is subject to Section 310(b) of the Trust Indenture Act.

The Trustee in its individual or any other capacity may become a creditor of the Company or any Guarantor and may otherwise deal with the Company or any Affiliate of the Company with the same rights it would have if it were not Trustee. However, in the event that the Trustee acquires any conflicting interest (as defined in the Trust Indenture Act) after a Default has occurred and is continuing, it must eliminate such conflict within 90 days, apply to the SEC for permission to continue as trustee (if this Indenture has been qualified under the Trust Indenture Act) or resign.

Section 6.9. Corporate Trustee Required; Eligibility .

There shall at all times be a Trustee hereunder that shall be a corporation organized and doing business under the laws of the United States of America, any State thereof or the District of Columbia, authorized under such laws to exercise corporate trust powers, having a combined capital and surplus required by the Trust Indenture Act, subject to supervision or examination by Federal or State authority. If such corporation publishes reports of condition at least annually, pursuant to law or to the requirements of said supervising or examining authority, then for the purposes of this Section, the combined capital and surplus of such corporation shall be deemed to be its combined capital and surplus as set forth in its most recent report of condition so published. The Trustee shall not be an obligor upon the Securities or an Affiliate thereof. If at any time the Trustee shall cease to be eligible in accordance with the provisions of this Section, then it shall resign immediately in the manner and with the effect hereinafter specified in this Article Six.

Section 6.10. Resignation and Removal; Appointment of Successor .

(a) No resignation or removal of the Trustee and no appointment of a successor Trustee pursuant to this Article shall become effective until the acceptance of appointment by the successor Trustee in accordance with the applicable requirements of Section 6.11.

(b) The Trustee may resign at any time with respect to the Securities of one or more series by giving written notice thereof to the Company. If the instrument of acceptance by a successor Trustee required by Section 6.11 shall not have been delivered to the Trustee within 30 days after the giving of such notice of resignation, the resigning Trustee may petition any court of competent jurisdiction for the appointment of a successor Trustee with respect to the Securities of such series.

(c) The Trustee may be removed at any time with respect to the Securities of any series by Act of the Holders of a majority in aggregate principal amount of the Outstanding Securities of such series, delivered to the Trustee and to the Company.

(d) If at any time:

(i) the Trustee shall fail to comply with Section 310(b) of the Trust Indenture Act after written request therefor by the Company or by any Holder who has been a bona fide Holder of a Security for at least six months; or

(ii) the Trustee shall cease to be eligible under Section 6.9 and shall fail to resign after written request therefor by the Company or by any such Holder; or

(iii) the Trustee shall become incapable of acting or shall be adjudged a bankrupt or insolvent or a receiver of the Trustee or of its property shall be appointed or any public officer shall take charge or control of the Trustee or of its property or affairs for the purpose of rehabilitation, conservation or liquidation,

then, in any such case, (A) the Company by a Board Resolution may remove the Trustee with respect to all Securities, or (B) subject to Section 5.14, any Holder who has been a bona fide Holder of a Security for at least six months may, on behalf of himself and all others similarly situated, petition any court of competent jurisdiction for the removal of the Trustee with respect to all Securities and the appointment of a successor Trustee or Trustees.

(e) If the Trustee shall resign, be removed or become incapable of acting, or if a vacancy shall occur in the office of Trustee for any cause, with respect to the Securities of one or more series, the Company, by a Board Resolution, shall within 60 days appoint a successor Trustee or Trustees with respect to the Securities of that or those series (it being understood that any such successor Trustee may be appointed with respect to the Securities of one or more or all of such series and that at any time there shall be only one Trustee with respect to the Securities of any particular series) and shall comply with the applicable requirements of Section 6.11. If, within one year after such resignation, removal or incapability, or the occurrence of such vacancy, a successor Trustee with respect to the Securities of any series shall be appointed by Act of the Holders of a majority in aggregate principal amount of the Outstanding Securities of such series delivered to the Company and the retiring Trustee, the successor Trustee so appointed shall, forthwith upon its acceptance of such appointment in accordance with the applicable requirements of Section 6.11, become the successor Trustee with respect to the Securities of such series and to that extent supersede the successor Trustee appointed by the Company. If no successor Trustee with respect to the Securities of any series shall have been so appointed by the Company or the Holders and accepted appointment in the manner required by Section 6.11, any Holder who has been a bona fide Holder of a Security of such series for at least six months may, on behalf of himself and all others similarly situated, petition any court of competent jurisdiction for the appointment of a successor Trustee with respect to the Securities of such series.

(f) The Company shall give notice of each resignation and each removal of the Trustee with respect to the Securities of any series and each appointment of a successor Trustee with respect to the Securities of any series to all Holders of Securities

of such series in the manner provided in Section 1.7. Each notice shall include the name of the successor Trustee with respect to the Securities of such series and the address of its Corporate Trust Office.

Section 6.11. Acceptance of Appointment by Successor .

(a) In case of the appointment hereunder of a successor Trustee with respect to all Securities, every such successor Trustee so appointed shall execute, acknowledge and deliver to the Company, the Guarantors (if applicable) and to the retiring Trustee an instrument accepting such appointment, and thereupon the resignation or removal of the retiring Trustee shall become effective and such successor Trustee, without any further act, deed or conveyance, shall become vested with all the rights, powers, trusts and duties of the retiring Trustee; but, on the request of the Company or, if applicable, any Guarantor or the successor Trustee, such retiring Trustee shall, upon payment of its charges and all other amounts payable to it hereunder, execute and deliver an instrument transferring to such successor Trustee all the rights, powers and trusts of the retiring Trustee and shall duly assign, transfer and deliver to such successor Trustee all property and money held by such retiring Trustee hereunder, subject nonetheless to the lien provided for in Section 6.7.

(b) In case of the appointment hereunder of a successor Trustee with respect to the Securities of one or more (but not all) series, the Company, the Guarantors (if applicable), the retiring Trustee and each successor Trustee with respect to the Securities of one or more series shall execute and deliver an indenture supplemental hereto wherein each successor Trustee shall accept such appointment and which (i) shall contain such provisions as shall be necessary or desirable to transfer and confirm to, and to vest in, each successor Trustee all the rights, powers, trusts and duties of the retiring Trustee with respect to the Securities of that or those series to which the appointment of such successor Trustee relates, (ii) if the retiring Trustee is not retiring with respect to all Securities, shall contain such provisions as shall be deemed necessary or desirable to confirm that all the rights, powers, trusts and duties of the retiring Trustee with respect to the Securities of that or those series as to which the retiring Trustee is not retiring shall continue to be vested in the retiring Trustee, and (iii) shall add to or change any of the provisions of this Indenture as shall be necessary to provide for or facilitate the administration of the trusts hereunder by more than one Trustee, it being understood that nothing herein or in such supplemental indenture shall constitute such Trustees co-trustees of the same trust and that each such Trustee shall be trustee of a trust or trusts hereunder separate and apart from any trust or trusts hereunder administered by any other such Trustee; and upon the execution and delivery of such supplemental indenture, the resignation or removal of the retiring Trustee shall become effective to the extent provided therein and each such successor Trustee, without any further act, deed or conveyance, shall become vested with all the rights, powers, trusts and duties of the retiring Trustee with respect to the Securities of that or those series to which the appointment of such successor Trustee relates; but, on request of the Company, any Guarantor (if applicable) or any successor Trustee, such retiring Trustee, upon payment of its charges and all other amounts payable to it hereunder, shall duly assign, transfer and deliver to such successor Trustee all property and money held by such retiring

Trustee hereunder with respect to the Securities of that or those series to which the appointment of such successor Trustee relates, subject nonetheless to the lien provided for in Section 6.7.

(c) Upon request of any such successor Trustee, the Company and, if applicable, the Guarantors shall execute any and all instruments for more fully and certainly vesting in and confirming to such successor Trustee all such rights, powers and trusts referred to in paragraph (a) or (b) of this Section, as the case may be.

(d) No successor Trustee shall accept its appointment unless at the time of such acceptance such successor Trustee shall be qualified and eligible under this Article and the Trust Indenture Act.

Section 6.12. Merger, Conversion, Consolidation or Succession to Business .

Any corporation into which the Trustee may be merged or converted or with which it may be consolidated, or any corporation resulting from any merger, conversion or consolidation to which the Trustee shall be a party, or any corporation succeeding to all or substantially all the corporate trust business of the Trustee, shall be the successor of the Trustee hereunder, provided such corporation shall be otherwise qualified and eligible under this Article Six, without the execution or filing of any paper or any further act on the part of any of the parties hereto. As soon as practicable, the successor Trustee shall mail a notice of its succession to the Company and the Holders of the Securities then Outstanding. In case any Securities shall have been authenticated, but not delivered, by the Trustee then in office, any successor by merger, conversion or consolidation to such authenticating Trustee may adopt such authentication and deliver the Securities so authenticated with the same effect as if such successor Trustee had itself authenticated such Securities.

Section 6.13. Preferential Collection of Claims Against Company .

The Trustee is subject to Section 311(a) of the Trust Indenture Act, excluding any creditor relationship listed in Section 311(b) of the Trust Indenture Act. A Trustee who has resigned or been removed shall be subject to Section 311(a) of the Trust Indenture Act to the extent indicated therein.

Section 6.14. Appointment of Authenticating Agent .

The Trustee may appoint an Authenticating Agent or Agents with respect to one or more series of Securities, which shall be authorized to act on behalf of the Trustee to authenticate Securities of such series issued upon original issue and upon exchange, registration of transfer or partial redemption thereof or pursuant to Section 3.6, and Securities so authenticated shall be entitled to the benefits of this Indenture and shall be valid and obligatory for all purposes as if authenticated by the Trustee hereunder. Wherever reference is made in this Indenture to the authentication and delivery of Securities by the Trustee or the Trustee’s certificate of authentication, such reference shall be deemed to include authentication and delivery on behalf of the Trustee by an Authenticating Agent and a certificate of authentication executed on behalf of the Trustee by an Authenticating Agent. Each Authenticating Agent shall be acceptable to the Company and shall at all times be a corporation organized and doing business under the laws of

the United States of America, any State thereof or the District of Columbia, authorized under such laws to act as Authenticating Agent, having a combined capital and surplus of not less than $50,000,000 and subject to supervision or examination by Federal or State authority. If such Authenticating Agent publishes reports of condition at least annually, pursuant to law or to the requirements of said supervising or examining authority, then for the purposes of this Section, the combined capital and surplus of such Authenticating Agent shall be deemed to be its combined capital and surplus as set forth in its most recent report of condition so published. If at any time an Authenticating Agent shall cease to be eligible in accordance with the provisions of this Section, such Authenticating Agent shall resign immediately in the manner and with the effect specified in this Section.

Any corporation into which an Authenticating Agent may be merged or converted or with which it may be consolidated, or any corporation resulting from any merger, conversion or consolidation to which such Authenticating Agent shall be a party, or any corporation succeeding to all or substantially all of the corporate agency or corporate trust business of an Authenticating Agent, shall continue to be an Authenticating Agent, provided such corporation shall be otherwise eligible under this Section, without the execution or filing of any paper or any further act on the part of the Trustee or the Authenticating Agent.

An Authenticating Agent may resign at any time by giving written notice thereof to the Trustee and to the Company and, if applicable, the Guarantors. The Trustee may at any time terminate the agency of an Authenticating Agent by giving written notice thereof to such Authenticating Agent and to the Company and, if applicable, the Guarantors. Upon receiving such a notice of resignation or upon such a termination, or in case at any time such Authenticating Agent shall cease to be eligible in accordance with the provisions of this Section, the Trustee may appoint a successor Authenticating Agent that shall be acceptable to the Company and, if applicable, the Guarantors and shall mail written notice of such appointment by first-class mail, postage prepaid, to all Holders of Securities of the series with respect to which such Authenticating Agent will serve, as their names and addresses appear in the Security Register. Any successor Authenticating Agent upon acceptance of its appointment hereunder shall become vested with all the rights, powers and duties of its predecessor hereunder, with like effect as if originally named as an Authenticating Agent. No successor Authenticating Agent shall be appointed unless eligible under the provisions of this Section.

Except with respect to an Authenticating Agent appointed at the request of the Company or, if applicable, the Guarantors, the Trustee agrees to pay to each Authenticating Agent from time to time reasonable compensation for its services under this Section 6.14, and the Trustee shall be entitled to be reimbursed by the Company or, if applicable, the Guarantors for such payments, subject to the provisions of Section 6.7.

If an appointment with respect to one or more series is made pursuant to this Section 6.14, the Securities of such series may have endorsed thereon, in addition to the Trustee’s certificate of authentication, an alternate certificate of authentication in the following form:

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


	U.S. BANK NATIONAL ASSOCIATION , As Trustee
	By:
		As Authenticating Agent



	By:
		Authorized Officer

ARTICLE SEVEN
HOLDERS’ LISTS AND REPORTS BY TRUSTEE AND COMPANY

Section 7.1. Company to Furnish Trustee Names and Addresses of Holders .

The Trustee will preserve in as current a form as is reasonably practicable the most recent list available to it of the names and addresses of all Holders of Securities of each series and shall otherwise comply with Section 312(a) of the Trust Indenture Act. If the Trustee is not the Security Registrar, the Company will furnish to the Trustee at least seven 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 the Holders of Securities of each series and the Company shall otherwise comply with Section 312(a) of the Trust Indenture Act.

Section 7.2. Preservation of Information; Communications to Holders .

(a) The Trustee shall preserve, in as current a form as is reasonably practicable, the names and addresses of Holders contained in the most recent list furnished to the Trustee as provided in Section 7.1 and the names and addresses of Holders received by the Trustee in its capacity as Security Registrar. The Trustee may destroy any list furnished to it as provided in Section 7.1 upon receipt of a new list so furnished.

(b) If three or more Holders (herein referred to as “ applicants ”) apply in writing to the Trustee, and furnish to the Trustee reasonable proof that each such applicant has owned a Security for a period of at least six months preceding the date of such application, and such application states that the applicants desire to communicate with other Holders with respect to their rights under this Indenture or under the Securities and is accompanied by a copy of the form of proxy or other communication which such applicants propose to transmit, then the Trustee shall, within five Business Days after the receipt of such application, at its election, either:

(i) afford such applicants access to the information preserved at the time by the Trustee in accordance with Section 7.2(a); or

(ii) inform such applicants as to the approximate number of Holders whose names and addresses appear in the information preserved at the time by the Trustee in accordance with Section 7.2(a), and as to the approximate cost of mailing to such Holders the form of proxy or other communication, if any, specified in such application.

If the Trustee shall elect not to afford such applicants access to such information, the Trustee shall, upon the written request of such applicants, mail to each Holder whose name and address appear in the information preserved at the time by the Trustee in accordance with Section 7.2(a) a copy of the form of proxy or other communication that is specified in such request, with reasonable promptness after a tender to the Trustee of the material to be mailed and of payment, or provision for the payment, of the reasonable expenses of mailing, unless within five days after such tender the Trustee shall mail to such applicants and file with the SEC, together with a copy of the material to be mailed, a written statement to the effect that, in the opinion of the Trustee, such mailing would be contrary to the best interest of the Holders or would be in violation of applicable law. Such written statement shall specify the basis of such opinion. If the SEC, after opportunity for a hearing upon the objections specified in the written statement so filed, shall enter an order refusing to sustain any of such objections or if, after the entry of an order sustaining one or more of such objections, the SEC shall find, after notice and opportunity for hearing, that all the objections so sustained have been met and shall enter an order so declaring, the Trustee shall mail copies of such material to all such Holders with reasonable promptness after the entry of such order and the renewal of such tender; otherwise the Trustee shall be relieved of any obligation or duty to such applicants respecting their application.

(c) Every Holder of Securities, by receiving and holding the same, agrees with the Company, the Guarantors (if applicable) and the Trustee that none of the Company, the Guarantors (if applicable) nor the Trustee nor any agent of any of them shall be held accountable by reason of the disclosure of any such information as to the names and addresses of the Holders in accordance with Section 7.2(b), regardless of the source from which such information was derived, and that the Trustee shall not be held accountable by reason of mailing any material pursuant to a request made under Section 7.2(b).

Section 7.3. Reports by Trustee .

Within 60 days after each May 15 beginning with May 15, 2012, and for so long as Securities remain Outstanding, the Trustee will mail to the Holders of the Securities a brief report dated as of such reporting date that complies with Section 313(a) of the Trust Indenture Act (but if no event described in Section 313(a) of the Trust Indenture Act has occurred within the twelve months preceding the reporting date, no report need be transmitted). The Trustee also will comply with Section 313(b)(2) of the Trust Indenture Act. The Trustee will also transmit by mail all reports as required by Section 313(c) of the Trust Indenture Act.

A copy of each report shall, at the time of such transmission to Holders, be filed by the Trustee with each stock exchange upon which any Securities are listed, in accordance with

Section 313(d) of the Trust Indenture Act. The Company will promptly notify the Trustee when any Securities are listed on any stock exchange and a copy of each report shall also be filed by the Company with the SEC, in accordance with Section 313(d) of the Trust Indenture Act.

Section 7.4. Reports by Company .

So long as clauses (1), (2) and (3) of Section 314(a) of the Trust Indenture Act (or any successor provisions of law) are applicable to this Indenture, the Company shall:

(a) file with the Trustee, within 15 days after the Company files the same with the SEC, copies of the annual reports and of the information, documents and other reports (or copies of such portions of any of the foregoing as the SEC may from time to time by rules and regulations prescribe) which the Company may be required to file with the SEC pursuant to Section 13 or Section 15(d) of the Exchange Act; or, if the Company is not required to file information, documents or reports pursuant to either of said Sections, then it shall file with the Trustee and the SEC, in accordance with rules and regulations prescribed from time to time by the SEC, such of the supplementary and periodic information, documents and reports which may be required pursuant to Section 13 of the Exchange Act in respect of a security listed and registered on a national securities exchange as may be prescribed from time to time in such rules and regulations;

(b) file with the Trustee and the SEC, in accordance with rules and regulations prescribed from time to time by the SEC, such additional information, documents and reports with respect to compliance by the Company with the conditions and covenants of this Indenture as may be required from time to time by such rules and regulations; and

(c) transmit by mail to all Holders, as their names and addresses appear in the Security Register, within 30 days after the filing thereof with the Trustee, such summaries of any information, documents and reports required to be filed by the Company pursuant to clauses (a) and (b) of this Section as may be required by rules and regulations prescribed from time to time by the SEC.

To the extent any report referred to in clause (a) of this Section 7.4 is publicly available on the EDGAR system of the SEC, the Company shall be deemed to have filed the same with the Trustee as of the date such report become publicly available on such system. 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).

ARTICLE EIGHT
CONSOLIDATION, AMALGAMATION, MERGER AND SALE

Section 8.1. Company May Consolidate, Etc., Only on Certain Terms .

The Company shall not consolidate, amalgamate or merge with or into any other Person or sell, assign, transfer, convey, lease or otherwise dispose of all or substantially all of the

properties and assets of the Company and its Subsidiaries on a consolidated basis to any other Person unless:

(a) either: (i) the Company is the surviving corporation; or (ii) the Person formed by or surviving any such consolidation, amalgamation or merger or resulting from such conversion (if other than the Company) or to which such sale, assignment, transfer, conveyance, lease or other disposition has been made is a corporation, limited liability company or limited partnership organized or existing under the laws of the United States, any state of the United States or the District of Columbia;

(b) the Person formed by or surviving any such consolidation, amalgamation or merger (if other than the Company) or the Person to which such sale, assignment, transfer, conveyance, lease or other disposition has been made assumes by a supplemental indenture, executed and delivered to the Trustee, in form satisfactory to the Trustee, the due and punctual payment of the principal of (and premium, if any) and interest on all the Securities and the performance of every covenant of this Indenture on the part of the Company to be performed and observed; provided that, unless such Person is a corporation, a corporate co-issuer of the Securities will be added to this Indenture by a supplemental indenture;

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

(d) the Company has delivered to the Trustee an Officers’ Certificate and an Opinion of Counsel, each stating that such consolidation, amalgamation, merger, sale, assignment, transfer, conveyance, lease or other disposition and such supplemental indenture, if any, comply with this Article Eight and that all conditions precedent herein provided for relating to such transaction have been complied with.

Section 8.2. Successor Substituted .

Upon any consolidation, amalgamation or merger of the Company with or into any other Person or any sale, assignment, transfer, conveyance, lease or other disposition of all or substantially all of the properties and assets of the Company and, its Subsidiaries on a consolidated basis in accordance with Section 8.1, the successor or resulting Person formed by or resulting upon such consolidation, amalgamation or merger (if other than the Company) or to which such sale, assignment, transfer, conveyance, lease or other disposition is made shall succeed to, and be substituted for, and may exercise every right and power of, the Company under this Indenture with the same effect as if such successor Person had been named as the Company herein, and thereafter, except in the case of a lease, the predecessor Company and, if applicable, each of the Guarantors shall be relieved of all obligations and covenants under this Indenture and the Securities.

ARTICLE NINE
AMENDMENT, SUPPLEMENT AND WAIVER

Section 9.1. Without Consent of Holders .

Without the consent of any Holder of a Security, the Company, the Guarantors (if any) and the Trustee may amend or supplement this Indenture, the Securities Guarantee or the Securities to:

(a) cure any ambiguity or defect or to correct or supplement any provision herein that may be inconsistent with any other provision herein;

(b) evidence the succession of another Person to the Company and the assumption by any such successor of the covenants of the Company herein and, to the extent applicable, to the Securities;

(d) add a Securities Guarantee and cause any Person to become a Guarantor, and/or to evidence the succession of another Person to a Guarantor and the assumption by any such successor of the Securities Guarantee of such Guarantor herein;

(e) secure the Securities of any series;

(f) add to the covenants of the Company such further covenants, restrictions, conditions or provisions as the Company shall consider to be appropriate for the benefit of the Holders of all or any series of Securities (and if such covenants, restrictions, conditions or provisions are to be for the benefit of less than all series of Securities, stating that such covenants are expressly being included solely for the benefit of such series) or to surrender any right or power herein conferred upon the Company and to make the occurrence, or the occurrence and continuance, of a Default in any such additional covenants, restrictions, conditions or provisions an Event of Default permitting the enforcement of all or any of the several remedies provided in this Indenture as set forth herein; provided , that in respect of any such additional covenant, restriction, condition or provision, such supplemental indenture may provide for a particular period of grace after Default (which period may be shorter or longer than that allowed in the case of other Defaults) or may provide for an immediate enforcement upon such an Event of Default or may limit the remedies available to the Trustee upon such an Event of Default or may limit the right of the Holders of a majority in aggregate principal amount of the Securities of such series to waive such an Event of Default;

(g) make any change to any provision of this Indenture that would provide any additional rights or benefits to the Holders of Securities or that does not adversely affect the rights or interests of any such Holder;

(h) provide for the issuance of additional Securities in accordance with the provisions set forth in this Indenture on the date of this Indenture;

(i) add any additional Defaults or Events of Default in respect of all or any series of Securities;

(j) change or eliminate any of the provisions of this Indenture; provided that any such change or elimination shall become effective only when there is no Security Outstanding of any series created prior to the execution of such supplemental indenture that is entitled to the benefit of such provision;

(k) establish the form or terms of Securities of any series as permitted by Section 2.1 and Section 3.1, including to reopen any series of any Securities as permitted under Section 3.1;

(l) evidence and provide for the acceptance of appointment hereunder by a successor Trustee with respect to the Securities of one or more series and to add to or change any of the provisions of this Indenture as shall be necessary to provide for or facilitate the administration of the trusts hereunder by more than one Trustee, pursuant to the requirements of Section 6.11(b);

(m) conform the text of this Indenture (and/or any supplemental indenture) or any Securities issued hereunder to any provision of a description of such Securities appearing in a prospectus or prospectus supplement or an offering memorandum or offering circular pursuant to which such Securities were offered to the extent that such provision was intended to be a verbatim recitation of a provision of this Indenture (and/or any supplemental indenture) or any Securities or Securities Guarantee issued hereunder;

(n) add a corporate co-issuer in accordance with Section 8.1 hereof; or

(o) modify, eliminate or add to the provisions of this Indenture to such extent as shall be necessary to effect the qualification of this Indenture under the Trust Indenture Act, or under any similar federal statute subsequently enacted, and to add to this Indenture such other provisions as may be expressly required under the Trust Indenture Act.

Upon the request of the Company accompanied by a Board Resolution authorizing the execution of any such amended or supplemental indenture, and upon receipt by the Trustee of the documents described in Section 9.3 hereof, the Trustee is hereby authorized to join with the Company and any Guarantor in the execution of any such supplemental indenture, to make any further appropriate agreements and stipulations that may be therein contained and to accept the conveyance, transfer, assignment, mortgage, charge or pledge of any property thereunder, but the Trustee shall not be obligated to enter into any such supplemental indenture that affects the Trustee’s own rights, duties or immunities under this Indenture or otherwise.

Section 9.2. With Consent of Holders .

The Company, the Guarantors (if any) and the Trustee may amend or supplement this Indenture, the Securities Guarantee and the Securities with the consent of the Holders of a majority in aggregate principal amount of the Outstanding Securities of each series of Securities affected by such amendment or supplemental indenture, with each such series voting as a

separate class (including, without limitation, consents obtained in connection with a purchase of, or tender offer or exchange offer for, Securities) and, subject to Section 5.8 and Section 5.13 hereof, any existing Default or Event of Default or compliance with any provision of this Indenture, the Securities Guarantee or the Securities may be waived with respect to each series of Securities with the consent of the Holders of a majority in aggregate principal amount of the Outstanding Securities of such series voting as a separate class (including, without limitation, consents obtained in connection with a purchase of, or tender offer or exchange offer for, Securities).

Upon the request of the Company accompanied by a Board Resolution authorizing the execution of any such amended or supplemental indenture, and upon the filing with the Trustee of evidence satisfactory to the Trustee of the consent of the Holders of Securities as aforesaid, and upon receipt by the Trustee of the documents described in Section 9.3 hereof, the Trustee will join with the Company and the Guarantors (if any) in the execution of such amended or supplemental indenture unless such amended or supplemental indenture affects the Trustee’s own rights, duties or immunities under this Indenture or otherwise, in which case the Trustee may in its discretion, but will not be obligated to, enter into such amended or supplemental Indenture.

It is not necessary for the consent of the Holders of Securities under this Section 9.2 to approve the particular form of any proposed amendment, supplement or waiver, but it is sufficient if such consent approves the substance of the proposed amendment, supplement or waiver.

After an amendment, supplement or waiver under this Section 9.2 becomes effective, the Company will mail to the Holders of Securities affected thereby a notice briefly describing the amendment, supplement or waiver. Any failure of the Company to mail such notice, or any defect therein, will not, however, in any way impair or affect the validity of any such amended or supplemental indenture or waiver.

Subject to Section 5.8 and Section 5.13 hereof, the application of or compliance with, either generally or in any particular instance, any provision of this Indenture, the Securities or the Securities Guarantee may be waived as to each series of Securities by the Holders of a majority in aggregate principal amount of the Outstanding Securities of such series. However, without the consent of each Holder affected, an amendment, supplement or waiver under this Section 9.2 may not (with respect to any Securities held by a non-consenting Holder):

(a) change the Stated Maturity of the principal of, or any installment of principal of or interest on, any Security, or reduce the principal amount thereof or the rate of interest thereon or any premium payable upon the redemption thereof, or reduce the amount of the principal of an Original Issue Discount Security that would be due and payable upon a declaration of acceleration of the Maturity thereof pursuant to Section 5.2, or change any Place of Payment where, or the coin or currency in which, any Security or any premium or the interest thereon is payable, or impair the right to institute suit for the enforcement of any such payment on or after the Stated Maturity thereof (or, in the case of redemption, on or after the Redemption Date therefor);

(b) reduce the percentage in aggregate principal amount of the Outstanding Securities of any series, the consent of whose Holders is required for any such amendment, supplement or waiver;

(c) modify any of the provisions of Section 5.8 or Section 5.13, except to increase any such percentage or to provide that certain other provisions of this Indenture cannot be modified or waived without the consent of the Holder of each Outstanding Security affected thereby; provided , however , that this clause (c) shall not be deemed to require the consent of any Holder with respect to changes in the references to “the Trustee” and concomitant changes in this Section, or the deletion of this proviso, in accordance with the requirements of Section 6.11(b) and Section 9.1(l);

(d) waive a redemption payment with respect to any Security; provided, however , that any purchase or repurchase of Securities shall not be deemed a redemption of the Securities;

(e) release any Guarantor from any of its obligations under its Securities Guarantee or this Indenture, except in accordance with the terms of this Indenture (as supplemented by any supplemental indenture); or

(f) make any change in the foregoing amendment and waiver provisions.

A supplemental indenture that changes or eliminates any covenant or other provision of this Indenture that has expressly been included solely for the benefit of one or more particular series of Securities, or that modifies the rights of the Holders of Securities of such series with respect to such covenant or other provision, shall be deemed not to affect the rights under this Indenture of the Holders of Securities of any other series.

Section 9.3. Execution of Supplemental Indentures .

In executing, or accepting the additional trusts created by, any supplemental indenture permitted by this Article Nine or the modifications thereby of the trusts created by this Indenture, the Trustee shall be entitled to receive, and (subject to Section 6.1) shall be fully protected in relying upon, an Officers’ Certificate and an Opinion of Counsel stating that the execution of such supplemental indenture is authorized or permitted by this Indenture. The Trustee may, but shall not be obligated to, enter into any such supplemental indenture that affects the Trustee’s own rights, duties or immunities under this Indenture or otherwise.

Section 9.4. Effect of Supplemental Indentures .

Upon the execution of any supplemental indenture under this Article Nine, this Indenture shall be modified in accordance therewith, and such supplemental indenture shall form a part of this Indenture for all purposes; and every Holder of Securities theretofore or thereafter authenticated and delivered hereunder shall be bound thereby.

Section 9.5. Conformity with Trust Indenture Act .

Every supplemental indenture executed pursuant to this Article Nine shall conform to the requirements of the Trust Indenture Act as then in effect.

Section 9.6. Reference in Securities to Supplemental Indentures .

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

Section 9.7. Effect of Consents .

Until an amendment, supplement or waiver becomes effective, a consent to it by a Holder of a Security is a continuing consent by the Holder of a Security and every subsequent Holder of a Security or portion of a Security that evidences the same debt as the consenting Holder’s Security, even if notation of the consent is not made on any Security. An amendment, supplement or waiver becomes effective in accordance with its terms and thereafter binds every Holder.

ARTICLE TEN
COVENANTS

Section 10.1. Payment of Principal, Premium and Interest .

The Company covenants and agrees for the benefit of each series of Securities that it will duly and punctually pay the principal of and any premium and interest on the Securities of that series in accordance with the terms of the Securities and this Indenture.

Section 10.2. Maintenance of Office or Agency .

The Company will maintain in the United States, an office or agency (which may be an office of the Trustee or Security Registrar or agent of the Trustee or Security Registrar) where Securities of each series may be presented or surrendered for payment, where Securities of that series may be surrendered for registration of transfer or exchange and where notices and demands to or upon the Company in respect of the Securities of that series and this Indenture may be served. The Company will give prompt written notice to the Trustee of the location, and any change in the location, of such office or agency. If at any time the Company shall fail to maintain any such required office or agency or shall fail to furnish the Trustee with the address thereof, such presentations, surrenders, notices and demands may be made or served at the Corporate Trust Office of the Trustee.

The Company may also from time to time designate one or more other offices or agencies where the Securities of one or more series may be presented or surrendered for any or all such

purposes and may from time to time rescind such designations. Further, if at any time there shall be no such office or agency in The City of New York where the Securities of each series may be presented or surrendered for payment, the Company shall forthwith designate and maintain such an office or agency in The City of New York, in order that the Securities of each series shall at all times be payable in The City of New York. The Company will give prompt written notice to the Trustee of any such designation or rescission and of any change in the location of any such other office or agency.

Except as otherwise specified with respect to a series of Securities as contemplated by Section 3.1, the Company hereby initially designates (i) the Corporate Trust Office of the Trustee as the Company’s office or agency for each such purpose for each series of Securities and (ii) the corporate trust office of the Trustee at 100 Wall Street, Suite 1600, New York, New York 10005 as its office or agency where each series of the Securities may be presented or surrendered for payment.

Section 10.3. Money for Securities Payments to Be Held in Trust .

If the Company shall at any time act as its own Paying Agent, with respect to any series of Securities, it will, on or before each due date of the principal of or any premium or interest on any of the Securities of that series, segregate and hold in trust for the benefit of the Persons entitled thereto a sum sufficient to pay the principal and any premium and interest so becoming due until such sums shall be paid to such Persons or otherwise disposed of as herein provided and will promptly notify the Trustee of its action or failure so to act. Upon any bankruptcy or reorganization proceedings relating to the Company, the Trustee will serve as Paying Agent for the Securities.

Whenever the Company shall have one or more Paying Agents for any series of Securities, it will, prior to each due date of the principal of or any premium or interest on any Securities of that series, deposit with a Paying Agent a sum sufficient to pay the principal and any premium or interest so becoming due, such sum to be held in trust for the benefit of the Persons entitled to such principal, premium or interest, and (unless such Paying Agent is the Trustee) the Company will promptly notify the Trustee of its action or failure so to act. For purposes of this Section 10.3, should a due date for principal of or any premium or interest on, or sinking fund payment with respect to, any series of Securities not be on a Business Day, such payment shall be due on the next Business Day without any interest for the period from the due date until such Business Day.

The Company will cause each Paying Agent for any series of Securities other than the Trustee to execute and deliver to the Trustee an instrument in which such Paying Agent shall agree with the Trustee, subject to the provisions of this Section, that such Paying Agent will:

(a) hold all sums held by it for the payment of the principal of or any premium or interest on Securities of that series in trust for the benefit of the Persons entitled thereto until such sums shall be paid to such Persons or otherwise disposed of as herein provided;

(b) give the Trustee notice of any Default by the Company (or any other obligor upon the Securities of that series) in the making of any payment of principal or any premium or interest on the Securities of that series; and

(c) at any time during the continuance of any such Default, upon the written request of the Trustee, forthwith pay to the Trustee all sums so held in trust by such Paying Agent.

The Company and, if applicable, the Guarantors may at any time, for the purpose of obtaining the satisfaction and discharge of this Indenture or for any other purpose, pay, or by Company Order direct any Paying Agent to pay, to the Trustee all sums held in trust by the Company or such Paying Agent, such sums to be held by the Trustee upon the same trusts as those upon which such sums were held by the Company or such Paying Agent; and, upon such payment by any Paying Agent to the Trustee, such Paying Agent shall be released from all further liability with respect to such money.

Subject to any applicable escheat or abandoned property laws, any money deposited with the Trustee or any Paying Agent, or then held by the Company, in trust for the payment of the principal of or any premium or interest on any Security of any series and remaining unclaimed for one year after such principal or any premium or interest has become due and payable shall be paid to the Company on Company Request, or (if then held by the Company) shall be discharged from such trust; and the Holder of such Security shall thereafter, as an unsecured general creditor, look only to the Company for payment thereof, and all liability of the Trustee or such Paying Agent with respect to such trust money, and all liability of the Company as trustee thereof, shall thereupon cease; provided, however , that the Trustee or such Paying Agent, before being required to make any such repayment, may at the expense of the Company cause to be published once in The New York Times and The Wall Street Journal (national edition) notice that such money remains unclaimed and that, after a date specified therein, which shall not be less than 30 days from the date of such publication, any unclaimed balance of such money then remaining will be repaid to the Company.

Section 10.4. Existence .

Subject to Article Eight, the Company and, if any Securities of a series to which Article Fourteen has been made applicable are Outstanding, each Guarantor will do or cause to be done all things necessary to preserve and keep in full force and effect its existence, rights (charter and statutory) and franchises; provided , however , that the Company and, if applicable, each Guarantor shall not be required to preserve any such right or franchise if the Company shall determine that the preservation thereof is no longer desirable in the conduct of the business of the Company or such Guarantor, as the case may be.

Section 10.5. Statement by Officers as to Default .

Annually, within 150 days after the close of each fiscal year beginning with the fiscal year ending December 31, 2011, the Company and, if any Securities of a series to which Article Fourteen has been made applicable are Outstanding, each Guarantor will deliver to the Trustee an Officers’ Certificate as to the signing officers’ knowledge of the Company’s or such

Guarantor’s, as the case may be, compliance (without regard to any period of grace or requirement of notice provided herein) with all conditions and covenants under the Indenture and if the Company, or such Guarantor, shall not be in compliance, specifying such non-compliance and the nature and status thereof of which such officer may have knowledge. If a Default or an Event of Default has occurred, the Company or such Guarantor shall deliver to the Trustee within five Business Days of the Company or such Guarantor, as the case may be, becoming aware of such Default or Event of Default, a written statement (which need not be an Officers’ Certificate) setting forth the details of such Default or Event of Default and the actions that the Company or such Guarantor, as the case may be, proposes to take with respect thereto.

ARTICLE ELEVEN
REDEMPTION OF SECURITIES

Section 11.1. Applicability of Article .

Securities of any series that are redeemable before their Stated Maturity shall be redeemable in accordance with their terms and (except as otherwise specified as contemplated by Section 3.1 for Securities of any series) in accordance with this Article Eleven.

Section 11.2. Election to Redeem; Notice to Trustee .

The election of the Company to redeem any Securities shall be evidenced by a Board Resolution. In case of any redemption at the election of the Company of less than all the Securities of any series, the Company shall, at least five Business Days prior to the giving of notice of such redemption (unless a shorter notice shall be satisfactory to the Trustee), notify the Trustee of such Redemption Date and of the principal amount of Securities of such series to be redeemed and, if applicable, of the tenor of the Securities to be redeemed. In the case of any redemption of Securities (a) prior to the expiration of any restriction on such redemption provided in the terms of such Securities or elsewhere in this Indenture or (b) pursuant to an election of the Company that is subject to a condition specified in the terms of the Securities of the series to be redeemed, the Company shall furnish the Trustee with an Officers’ Certificate evidencing compliance with such restriction or condition.

Section 11.3. Selection by Trustee of Securities to Be Redeemed .

If less than all the Securities of any series are to be redeemed (unless all of the Securities of such series and of a specified tenor are to be redeemed), the particular Securities to be redeemed shall be selected not more than 45 days prior to the Redemption Date by the Trustee, from the Outstanding Securities of such series not previously called for redemption, by such method as the Trustee shall deem fair and appropriate and which may provide for the selection for redemption of portions (equal to the minimum authorized denomination for Securities of that series or any integral multiple thereof) of the principal amount of Securities of such series of a denomination larger than the minimum authorized denomination for Securities of that series.

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. If the Securities of any series to be redeemed consist of Securities having different dates on which the principal is payable or different rates of interest, or

different methods by which interest may be determined or have any other different tenor or terms, then the Company may, by written notice to the Trustee, direct that the Securities of such series to be redeemed shall be selected from among the groups of such Securities having specified tenor or terms and the Trustee shall thereafter select the particular Securities to be redeemed in the manner set forth in the preceding paragraph from among the group of such Securities so specified.

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

Section 11.4. Notice of Redemption .

Notice of redemption shall be given by first-class mail, postage prepaid, mailed not less than 30 nor more than 60 days prior to the Redemption Date, to each Holder of Securities to be redeemed, at such Holder’s address appearing in the Security Register.

All notices of redemption shall state:

(a) the Redemption Date,

(b) the Redemption Price, or if not then ascertainable, the manner of calculation thereof,

(c) if less than all the Outstanding Securities of any series are to be redeemed, the identification (and, in the case of partial redemption, the principal amounts) of the particular Securities to be redeemed,

(d) that on the Redemption Date the Redemption Price will become due and payable upon each such Security to be redeemed and, if applicable, that interest thereon will cease to accrue on and after said date,

(e) the place or places where such Securities are to be surrendered for payment of the Redemption Price, and

(f) that the redemption is for a sinking fund, if such is the case.

Notice of redemption of Securities to be redeemed at the election of the Company shall be given by the Company or, at the Company’s request, by the Trustee in the name and at the expense of the Company; provided , however , that the Company has delivered to the Trustee, at least five Business Days (unless a shorter period shall be acceptable to the Trustee) prior to mailing the notice of redemption, a Company Request that the Trustee give such notice and setting forth the information to be stated in such notice.

Section 11.5. Deposit of Redemption Price .

Prior to 11:00 a.m., Eastern 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 10.3) an amount of money sufficient to pay the Redemption Price of, and (except if the Redemption Date shall be an Interest Payment Date) accrued interest on, all the Securities which are to be redeemed on that date.

Section 11.6. 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 therein specified, and from and after such date (unless the Company shall default in the payment of the Redemption Price and accrued 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, together with accrued interest to the Redemption Date; provided , however , that unless otherwise specified with respect to Securities of any series as contemplated in Section 3.1, installments of interest whose Stated Maturity is on or prior to the Redemption Date shall be payable to the Holders of such Securities, or one or more Predecessor Securities, registered as such at the close of business on the relevant record dates according to their terms and the provisions of Section 3.7.

If any Security called for redemption shall not be so paid upon surrender thereof for redemption, the principal (and premium, if any) shall, until paid, bear interest from the Redemption Date at the rate prescribed therefor in the Security.

Section 11.7. Securities Redeemed in Part .

Any Security which is to be redeemed only in part shall be surrendered at a Place of Payment therefor (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 his attorney duly authorized in writing), and the Company shall execute, and the Trustee shall authenticate and deliver to the Holder of such Security without service charge, a new Security or Securities of the same series and tenor, of any authorized denomination as requested by such Holder, in aggregate principal amount equal to and in exchange for the unredeemed portion of the principal of the Security so surrendered.

ARTICLE TWELVE
SINKING FUNDS

Section 12.1. Applicability of Article .

The provisions of this Article Twelve shall be applicable to any sinking fund for the retirement of Securities of a series except as otherwise specified as contemplated by Section 3.1 for Securities of such series.

The minimum amount of any sinking fund payment provided for by the terms of Securities of any series is herein referred to as a “ Mandatory Sinking Fund Payment, ” and any

payment in excess of such minimum amount provided for by the terms of Securities of any series is herein referred to as an “ Optional Sinking Fund Payment .” If provided for by the terms of Securities of any series, the cash amount of any sinking fund payment may be subject to reduction as provided in Section 12.2. Each sinking fund payment shall be applied to the redemption of Securities of any series as provided for by the terms of Securities of such series.

Section 12.2. Satisfaction of Sinking Fund Payments with Securities .

The Company (a) may deliver Outstanding Securities of a series (other than any previously called for redemption) and (b) may apply as a credit Securities of a series that have been redeemed either at the election of the Company pursuant to the terms of such Securities or through the application of permitted Optional Sinking Fund Payments pursuant to the terms of such Securities, in each case in satisfaction of all or any part of any sinking fund payment with respect to the Securities of such series required to be made pursuant to the terms of such Securities as provided for by the terms of such series; provided that such Securities have not been previously so credited. Such Securities shall be received and credited for such purpose by the Trustee at the Redemption Price specified in such Securities for redemption through operation of the sinking fund and the amount of such sinking fund payment shall be reduced accordingly.

Section 12.3. Redemption of Securities for Sinking Fund .

Not less than 45 days prior to each sinking fund payment date for any series of Securities (unless a shorter period shall be satisfactory to the Trustee), the Company will deliver to the Trustee an Officers’ Certificate specifying the amount of the next ensuing sinking fund payment for that series pursuant to the terms of that series, the portion thereof, if any, which is to be satisfied by payment of cash and the portion thereof, if any, which is to be satisfied by delivering and crediting Securities of that series pursuant to Section 12.2 and stating the basis for such credit and that such Securities have not been previously so credited, and will also deliver to the Trustee any Securities to be so delivered. Not less than 30 days before each such sinking fund payment date, the Trustee shall select the Securities to be redeemed upon such sinking fund payment date in the manner specified in Section 11.3 and cause notice of the redemption thereof to be given in the name of and at the expense of the Company in the manner provided in Section 11.4. Such notice having been duly given, the redemption of such Securities shall be made upon the terms and in the manner stated in Section 11.6 and Section 11.7.

ARTICLE THIRTEEN
DEFEASANCE

Section 13.1. Option to Effect Legal Defeasance or Covenant Defeasance .

The Company may, at the option of its Board of Directors evidenced by a resolution set forth in an Officers’ Certificate, and at any time, elect to have either Section 13.2 or Section 13.3 hereof be applied to all Outstanding Securities of any series upon compliance with the conditions set forth below in this Article Thirteen.

Section 13.2. Legal Defeasance and Discharge .

Upon the Company’s exercise under Section 13.1 hereof of the option applicable to this Section 13.2, the Company and each of the Guarantors will, subject to the satisfaction of the conditions set forth in Section 13.4 hereof, be deemed to have been discharged from their obligations with respect to all Outstanding Securities of such series (including the Securities Guarantee) on the date the conditions set forth below are satisfied (hereinafter, “ Legal Defeasance ”). For this purpose, Legal Defeasance means that the Company and the Guarantors will be deemed to have paid and discharged the entire Debt represented by the Outstanding Securities of such series (including the Securities Guarantee), which will thereafter be deemed to be “outstanding” only for the purposes of Section 13.5 hereof and the other sections of this Indenture referred to in clauses (a) and (b) below, and to have satisfied all their other obligations under such Securities, the Securities Guarantee and this Indenture (and the Trustee, on demand of and at the expense of the Company, shall execute proper instruments acknowledging the same), except for the following provisions, which will survive until otherwise terminated or discharged hereunder:

(a) the rights of Holders of Outstanding Securities of such series to receive payments in respect of the principal of, or interest or premium, if any, on such Securities when such payments are due from the trust referred to in Section 13.4 hereof;

(b) the Company’s obligations with respect to such Securities under Section 3.4, Section 3.5, Section 3.6, Section 10.2 and Section 10.3 hereof;

(c) the rights, powers, trusts, duties and immunities of the Trustee hereunder and the Company’s and the Guarantors’ obligations in connection therewith; and

(d) this Article Thirteen.

Subject to compliance with this Article Thirteen, the Company may exercise its option under this Section 13.2 notwithstanding the prior exercise of its option under Section 13.3 hereof with respect to the same series of Securities.

Section 13.3. Covenant Defeasance .

Upon the Company’s exercise under Section 13.1 hereof of the option applicable to this Section 13.3, the Company and each of the Guarantors will, subject to the satisfaction of the conditions set forth in Section 13.4 hereof, be released from each of their obligations respecting the Securities of such series under the covenants contained in Section 10.4 and Article Fourteen hereof as well as any Additional Defeasible Provisions (such release and termination hereinafter referred to as “ Covenant Defeasance ”), the Securities Guarantee respecting such Securities will be discharged, and the Securities of such series will thereafter be deemed not “outstanding” for the purposes of any direction, waiver, consent or declaration or act of Holders (and the consequences of any thereof) in connection with such covenants, but will continue to be deemed “outstanding” for all other purposes hereunder (it being understood that such Securities will not be deemed outstanding for accounting purposes to the extent permitted by GAAP). For this purpose, Covenant Defeasance means that, with respect to the Outstanding Securities of such series, the Company and the Guarantors may omit to comply with and will have no liability in

respect of any term, condition or limitation set forth in any such covenant, whether directly or indirectly, by reason of any reference elsewhere herein to any such covenant or by reason of any reference in any such covenant to any other provision herein or in any other document and such omission to comply will not constitute a Default or an Event of Default under Section 5.1 hereof, but, except as specified above, the remainder of this Indenture and such Securities will be unaffected thereby. In addition, upon the Company’s exercise under Section 13.1 hereof of the option applicable to this Section 13.3, subject to the satisfaction of the conditions set forth in Section 13.4, Section 5.1(c), Section 5.1(d) and Section 5.1(h) hereof and will not constitute Events of Default.

Section 13.4. Conditions to Legal or Covenant Defeasance .

In order to exercise either Legal Defeasance or Covenant Defeasance with respect to any series of Securities under either Section 13.2 or Section 13.3 hereof:

(a) the Company must irrevocably deposit with the Trustee, in trust, for the benefit of the Holders of the Securities of such series, cash in U.S. dollars, non-callable Government Securities, or a combination of cash in U.S. dollars and non-callable Government Securities, in such amounts as will be sufficient, in the opinion of a nationally recognized investment bank, nationally recognized appraisal firm, or nationally recognized firm of independent public accountants to pay the principal of, or interest and premium, if any, on the Outstanding Securities of such series on the stated date for payment thereof or on the applicable Redemption Date, as the case may be, and the Company must specify whether the Securities are being defeased to such stated date for payment or to a particular Redemption Date;

(b) in the case of an election under Section 13.2 hereof, the Company must deliver to the Trustee an Opinion of Counsel confirming that:

(i) the Company has received from, or there has been published by, the Internal Revenue Service a ruling; or

(ii) since the Issue Date, there has been a change in the applicable U.S. federal income tax law,

in either case to the effect that, and based thereon such Opinion of Counsel will confirm that, the Holders of the Outstanding Securities of such series will not recognize income, gain or loss for U.S. federal income tax purposes as a result of such Legal Defeasance and will be subject to U.S. federal income tax on the same amounts, in the same manner and at the same times as would have been the case if such Legal Defeasance had not occurred;

(c) in the case of an election under Section 13.3 hereof, the Company must deliver to the Trustee an Opinion of Counsel confirming that the Holders of the Outstanding Securities of such series will not recognize income, gain or loss for U.S. federal income tax purposes as a result of such Covenant Defeasance and will be subject to U.S. federal income tax on the same amounts, in the same manner and at the same times as would have been the case if such Covenant Defeasance had not occurred;

(d) no Default or Event of Default respecting such series of Securities has occurred and is continuing on the date of such deposit (other than a Default or Event of Default resulting from the borrowing of funds to be applied to such deposit or the grant of liens securing such borrowing);

(e) such Legal Defeasance or Covenant Defeasance and the related deposit will not result in a breach or violation of, or constitute a default under, any material agreement or instrument (other than this Indenture) to which the Company or any of its Subsidiaries is a party or by which the Company or any of its Subsidiaries is bound;

(f) the Company must deliver to the Trustee an Officers’ Certificate stating that the deposit was not made by the Company with the intent of preferring the Holders of such Securities over the other creditors of the Company with the intent of defeating, hindering, delaying or defrauding any creditors of the Company or others;

(g) the Company must deliver to the Trustee an Officers’ Certificate, stating that all conditions precedent set forth in clauses (a) through (f) of this Section 13.4 have been complied with; and

(h) the Company must deliver to the Trustee an Opinion of Counsel, stating that all conditions precedent set forth in clauses (b), (c) and (e) of this Section 13.4 have been complied with.

Section 13.5. Deposited Money and Government Securities to be Held in Trust, Other Miscellaneous Provisions .

Subject to the last paragraph of Section 10.3 hereof, all money and non-callable Government Securities (including the proceeds thereof) deposited with the Trustee (or other qualifying trustee, collectively for purposes of this Section 13.5, the “ Trustee ”) pursuant to Section 13.4 hereof in respect of the Outstanding Securities of any series will be held in trust and applied by the Trustee, in accordance with the provisions of such Securities and this Indenture, to the payment, either directly or through any Paying Agent (including the Company acting as Paying Agent) as the Trustee may determine, to the Holders of such Securities of all sums due and to become due thereon in respect of principal, premium, if any, and interest, but such money need not be segregated from other funds except to the extent required by law.

The Company will pay and indemnify the Trustee against any tax, fee or other charge imposed on or assessed against the cash or non-callable Government Securities deposited pursuant to Section 13.4 hereof or the principal and interest received in respect thereof other than any such tax, fee or other charge that by law is for the account of the Holders of such Outstanding Securities.

Notwithstanding anything in this Article Thirteen to the contrary, the Trustee will deliver or pay to the Company from time to time upon the request of the Company any money or non-callable Government Securities held by it as provided in Section 13.4 hereof, which, in the opinion of a nationally recognized firm of independent public accountants expressed in a written certification thereof delivered to the Trustee (which may be the opinion delivered under

Section 13.4(a) hereof), are in excess of the amount thereof that would then be required to be deposited to effect an equivalent Legal Defeasance or Covenant Defeasance.

Section 13.6. Reinstatement .

If the Trustee or Paying Agent is unable to apply any United States dollars or non-callable Government Securities in accordance with Section 13.2 or Section 13.3 hereof with respect to the Securities of any series, as the case may be, by reason of any order or judgment of any court or governmental authority enjoining, restraining or otherwise prohibiting such application, then the Company’s and the Guarantors’ obligations under this Indenture and such Securities and the Securities Guarantee will be revived and reinstated as though no deposit had occurred pursuant to Section 13.2 or Section 13.3 hereof until such time as the Trustee or Paying Agent is permitted to apply all such money or non-callable Government Securities in accordance with Section 13.2 or Section 13.3 hereof, as the case may be; provided, however , that, if the Company makes any payment of principal of, premium, if any, or interest on any such Security following the reinstatement of its obligations, the Company will be subrogated to the rights of the Holders of such Securities to receive such payment from the money or non-callable Government Securities held by the Trustee or Paying Agent.

ARTICLE FOURTEEN
GUARANTEE OF SECURITIES

Section 14.1. Securities Guarantee .

(a) Subject to the other provisions of this Article Fourteen, each of the Guarantors hereby jointly and severally guarantees to each Holder of a Security of each series to which this Article Fourteen has been made applicable as provided in Section 3.1(t) (the Securities of such series being referred to herein as the “ Guaranteed Securities ”) (which Security has been authenticated and delivered by the Trustee), and to the Trustee and its successors and assigns, irrespective of the validity and enforceability of this Indenture, the Guaranteed Securities, and the obligations of the Company hereunder or thereunder, that:

(i) the principal of, premium, if any, and interest on the Guaranteed Securities will be promptly paid in full when due, whether at Stated Maturity, by acceleration, redemption or otherwise, and interest on the overdue principal of and interest on the Guaranteed Securities, if any, if lawful, and all other obligations of the Company to the Holders of Guaranteed Securities, or the Trustee hereunder or thereunder will be promptly paid in full or performed, all in accordance with the terms hereof and thereof; and

(ii) in case of any extension of time of payment or renewal of any Guaranteed Securities or any of such other obligations, that same will be promptly paid in full when due or performed in accordance with the terms of the extension or renewal, whether at Stated Maturity, by acceleration or otherwise.

Failing payment when due of any amount so guaranteed or any performance so guaranteed for whatever reason, the Guarantors will be jointly and severally obligated to

pay the same immediately. Each Guarantor agrees that this is a guarantee of payment and not a guarantee of collection.

(b) To the extent permissible under applicable law, the obligations of the Guarantors under this Securities Guarantee are unconditional, irrespective of the validity, regularity or enforceability of the Guaranteed Securities or this Indenture, the absence of any action to enforce the same, any waiver or consent by any Holder of the Guaranteed Securities with respect to any provisions hereof or thereof, the recovery of any judgment against the Company, any action to enforce the same or any other circumstance which might otherwise constitute a legal or equitable discharge or defense of a guarantor. To the extent permitted by applicable law, each Guarantor hereby waives diligence, presentment, demand of payment, filing of claims with a court in the event of insolvency or bankruptcy of the Company, any right to require a proceeding first against the Company, protest, notice and all demands whatsoever and covenants that this Securities Guarantee will not be discharged except by complete performance of the obligations contained in the Guaranteed Securities and this Indenture.

(c) If any Holder or the Trustee is required by any court or otherwise to return to the Company, the Guarantors or any custodian, trustee, liquidator or other similar official acting in relation to either the Company or the Guarantors, any amount paid by either to the Trustee or such Holder, then this Securities Guarantee, to the extent theretofore discharged, will be reinstated in full force and effect.

(d) Each Guarantor agrees that it will not be entitled to any right of subrogation in relation to the Holders in respect of any obligations guaranteed hereby until payment in full of all obligations guaranteed hereby. Each Guarantor further agrees that, to the extent permitted by applicable law, as between the Guarantors, on the one hand, and the Holders of Guaranteed Securities and the Trustee, on the other hand, (1) the maturity of the obligations guaranteed hereby may be accelerated as provided in Article Five hereof for the purposes of this Securities Guarantee, notwithstanding any stay, injunction or other prohibition preventing such acceleration in respect of the obligations guaranteed hereby, and (2) in the event of any declaration of acceleration of such obligations as provided in Article Five hereof, such obligations (regardless of whether due and payable) will forthwith become due and payable by the Guarantors for the purpose of this Securities Guarantee. The Guarantors will have the right to seek contribution from any non-paying Guarantor so long as the exercise of such right does not impair the rights of the Holders under the Securities Guarantee.

Section 14.2. Limitation on Guarantor Liability .

Each Guarantor and, by its acceptance of Guaranteed Securities, each Holder thereof, hereby confirm that it is the intention of all such parties that the Securities Guarantee of such Guarantor not constitute a fraudulent transfer or conveyance for purposes of Bankruptcy Law, the Uniform Fraudulent Conveyance Act, the Uniform Fraudulent Transfer Act or any similar federal or state law to the extent applicable to any Securities Guarantee. To effectuate the foregoing intention, to the extent permitted under applicable law, the Trustee, the Holders and each Guarantor hereby irrevocably agree that the obligations of such Guarantor will be limited to

the maximum amount that will, after giving effect to such maximum amount and all other contingent and fixed liabilities of such Guarantor that are relevant under such laws, and after giving effect to any collections from, rights to receive contribution from or payments made by or on behalf of any other Guarantor in respect of the obligations of such other Guarantor under this Article Fourteen, result in the obligations of such Guarantor under its Securities Guarantee not constituting a fraudulent transfer or conveyance.

Section 14.3. Execution and Delivery of Securities Guarantee Notation .

To evidence its Securities Guarantee set forth in Section 14.1 hereof, each Guarantor hereby agrees that a notation of such Securities Guarantee substantially in the form set forth in Section 2.3 or established pursuant to a Board Resolution or in a supplemental indenture, in accordance with the provisions of Section 2.1, will be endorsed by an officer of such Guarantor on each Guaranteed Security authenticated and delivered by the Trustee and that this Indenture will be executed on behalf of such Guarantor by one of its officers.

Each Guarantor hereby agrees that its Securities Guarantee set forth in Section 14.1 hereof will remain in full force and effect notwithstanding any failure to endorse on each Guaranteed Security a notation of such Securities Guarantee.

The delivery of any Guaranteed Security by the Trustee, after the authentication thereof hereunder, will constitute due delivery of the Securities Guarantee of such Guaranteed Security set forth in this Indenture on behalf of the Guarantors.

* * *

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

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


	OASIS PETROLEUM INC.
	By:	/s/ Thomas B. Nusz
		Thomas B. Nusz
		President and Chief Executive Officer

	U.S. BANK NATIONAL ASSOCIATION , as Trustee
	By:	/s/ Steven Finklea
		Steven Finklea
		Vice President

Signature Page to Base Indenture

Exhibit 4.2

OASIS PETROLEUM INC.

as the Company

THE SUBSIDIARY GUARANTORS NAMED HEREIN

as the Subsidiary Guarantors

and

U.S. BANK NATIONAL ASSOCIATION

as Trustee

FIRST SUPPLEMENTAL INDENTURE

Dated as of February 2, 2011

INDENTURE

Dated as of February 2, 2011

7.25% SENIOR NOTES DUE 2019

TABLE OF CONTENTS


	Page

ARTICLE 1 RELATION TO INDENTURE; DEFINITIONS		1
SECTION 1.01. Relation to Indenture		1
SECTION 1.02. Definitions		1
SECTION 1.03. General References		2

ARTICLE 2 THE SERIES OF SECURITIES		2
SECTION 2.01. The Form and Title of the Securities		2
SECTION 2.02. Amount		2
SECTION 2.03. Stated Maturity		3
SECTION 2.04. Interest and Interest Rates		3
SECTION 2.05. Initial Depositary; Paying Agent; Place of Payment		3
SECTION 2.06. Optional Redemption		3
SECTION 2.07. Mandatory Redemption		3
SECTION 2.08. Defeasance and Discharge; Covenant Defeasance		3
SECTION 2.09. Subsidiary Guarantees		4
SECTION 2.10. Registration Rights Agreement		4
SECTION 2.11. Global Securities		4

ARTICLE 3 AMENDMENTS TO ORIGINAL INDENTURE		4
SECTION 3.01. Defined Terms		5
SECTION 3.02. References to Liquidated Damages		37
SECTION 3.03. Registration, Registration of Transfer and Exchange		37
SECTION 3.04. Defaults and Remedies		51
SECTION 3.05. Notice of Defaults		55
SECTION 3.06. Compensation and Reimbursement		55
SECTION 3.07. Merger, Consolidation or Sale of Substantially All Assets		56
SECTION 3.08. Redemption of Notes		57
SECTION 3.09. Redemption Upon Equity Offering		59
SECTION 3.10. Covenant Defeasance		59
SECTION 3.11. Subsidiary Guarantees of the Notes		60

ARTICLE 4 ADDITIONAL COVENANTS		61
SECTION 4.01. Reports		61
SECTION 4.02. Taxes		63
SECTION 4.03. Restricted Payments		63
SECTION 4.04. Dividend and Other Payment Restrictions Affecting Restricted Subsidiaries		68
SECTION 4.05. Incurrence of Indebtedness and Issuance of Preferred Stock		70
SECTION 4.06. Asset Sales		75
SECTION 4.07. Transactions with Affiliates		79
SECTION 4.08. Limitation on Liens		81
SECTION 4.09. Offer to Repurchase upon a Change of Control		82
SECTION 4.10. Designation of Restricted and Unrestricted Subsidiaries		84
SECTION 4.11. Subsidiary Guarantees		85

TABLE OF CONTENTS


	Page
SECTION 4.12. Termination of Certain Covenants		86

ARTICLE 5 MISCELLANEOUS		86
SECTION 5.01. Certain Trustee Matters		86
SECTION 5.02. Continued Effect		86
SECTION 5.03. Governing Law		87
SECTION 5.04. Counterparts		87

EXHIBITS
Exhibit A: FORM OF NOTE
Exhibit B: FORM OF CERTIFICATE OF TRANSFER
Exhibit C: FORM OF CERTIFICATE OF EXCHANGE
Exhibit D: FORM OF CERTIFICATE FROM ACQUIRING INSTITUTIONAL ACCREDITED INVESTOR
Exhibit E: FORM OF SUPPLEMENTAL INDENTURE

THIS FIRST SUPPLEMENTAL INDENTURE , dated as of February 2, 2011 (this “ First Supplemental Indenture ”), is by and among OASIS PETROLEUM INC. , a corporation duly organized and existing under the laws of the State of Delaware (the “ Company ”), each of the Subsidiary Guarantors named on the signature pages hereof, and U.S. BANK NATIONAL ASSOCIATION , as trustee under the Indenture referred to below (in such capacity, the “ Trustee ”).

RECITALS OF THE COMPANY

WHEREAS, the Company and the Trustee have heretofore entered into an Indenture, dated as of February 2, 2011 (the “ Original Indenture ”) (the Original Indenture, as supplemented from time to time, including without limitation pursuant to this First Supplemental Indenture, being referred to herein as the “ Indenture ”); and

WHEREAS, under the Original Indenture, a new series of Securities (as defined in the Original Indenture) may at any time be established by the Board of Directors of the Company, in accordance with the provisions of the Original Indenture, and the form and terms of such series may be established by an indenture supplemental to the Original Indenture; and

WHEREAS, the Company proposes to create under the Indenture a new series of Securities;

NOW, THEREFORE, in consideration of the premises, agreements and obligations set forth herein and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto hereby agree, for the equal and proportionate benefit of all Holders of the Notes (as defined below), as follows:

ARTICLE 1
Relation to Indenture; Definitions

SECTION 1.01. Relation to Indenture.

With respect to the Notes only, this First Supplemental Indenture constitutes an integral part of the Indenture.

SECTION 1.02. Definitions.

For all purposes of this First Supplemental Indenture, capitalized terms used herein and not otherwise defined herein shall have the meanings assigned thereto in the Original Indenture.

For all purposes of this First Supplemental Indenture:

“ Company ” has the meaning set forth in the preamble hereof.

“ DTC ” shall have the meaning set forth in Section 2.05 hereof.

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

“ Trustee ” has the meaning set forth in the preamble hereof.

SECTION 1.03. General References.

Unless otherwise specified or unless the context otherwise requires, (i) all references in this First Supplemental Indenture to Articles and Sections refer to the corresponding Articles and Sections of this First Supplemental Indenture and (ii) the terms “ herein, ” “ hereof, ” “ hereunder ” and any other word of similar import refer to this First Supplemental Indenture.

ARTICLE 2
The Series of Securities

SECTION 2.01. The Form and Title of the Securities .

There is hereby established a new series of Securities to be issued under the Indenture and to be designated as the Company’s 7.25% Senior Notes due 2019 (the “ Notes ”). The Notes shall be substantially in the form attached as Exhibit A hereto, in each case with such appropriate insertions, omissions, substitutions and other variations as are required or permitted by the Indenture, and may have such letters, numbers or other marks of identification and such legends or endorsements placed thereon as the Company may deem appropriate or as may be required or appropriate to comply with any laws or with any rules made pursuant thereto or with the rules of any securities exchange or automated quotation system on which the Notes may be listed or traded, or to conform to general usage.

The Notes shall be executed, authenticated and delivered in accordance with the provisions of, and shall in all respects be subject to, the terms, conditions and covenants of the Original Indenture as supplemented by this First Supplemental Indenture (including the form of Note attached as Exhibit A hereto (the terms of which are incorporated in and made a part of this First Supplemental Indenture for all intents and purposes)). The terms and provisions contained in the Notes will constitute, and are hereby expressly made, a part of the Indenture, and the Company and the Trustee, by their execution and delivery of the Indenture, expressly agree to such terms and provisions and to be bound thereby. However, to the extent any provision of any Note conflicts with the express provisions of the Indenture, the provisions of the Indenture shall govern and be controlling.

SECTION 2.02. Amount .

Subject to compliance with Section 10.10 of the Indenture, the aggregate principal amount of the Notes that may be authenticated and delivered pursuant hereto is unlimited. The Trustee shall initially authenticate and deliver Notes for original issue in an initial aggregate principal amount of up to $400,000,000, upon delivery to the Trustee of a Company Order for the authentication and delivery of such Notes. The aggregate principal amount of the Notes to be issued hereunder may be increased at any time hereafter and the series may be reopened for issuances of Additional Notes, upon Company Order without the consent of any Holder and without any further supplement or amendment to the Original Indenture or this First Supplemental Indenture. The Notes issued on the date hereof and any such Additional Notes that may be issued hereafter shall be part of the same series of Securities for all purposes under the Indenture, including waivers, amendments, redemptions and offers to purchase.

SECTION 2.03. Stated Maturity.

The Notes may be issued on any Business Day on or after the date of this First Supplemental Indenture, and the Stated Maturity of the principal of the Notes shall be February 1, 2019.

SECTION 2.04. Interest and Interest Rates .

The rate or rates at which the Notes shall bear interest, the date or dates from which such interest shall accrue, the Interest Payment Dates on which any such interest shall be payable and the Regular Record Date for any interest payable on any Interest Payment Date, in each case, shall be as set forth in the form of Note attached as Exhibit A hereto.

SECTION 2.05. Initial Depositary; Paying Agent; Place of Payment .

The Company initially appoints The Depository Trust Company (“ DTC ”) to act as the Depositary with respect to the Global Notes.

The Company initially appoints the Trustee to act as the Paying Agent.

The Place of Payment with respect to the Notes, in addition to the Corporate Trust Office of the Trustee, shall be New York, New York, as provided in Section 10.2 of the Original Indenture.

SECTION 2.06. Optional Redemption .

At its option, the Company may redeem the Notes, in whole or in part, in principal amounts of $2,000 or any integral multiple of $1,000 in excess thereof, at any time or from time to time, at the applicable Redemption Prices determined as set forth in the form of Note attached hereto as Exhibit A , in accordance with the terms set forth in the Notes, and in accordance with Article Eleven of the Original Indenture (as amended and supplemented by this First Supplemental Indenture, including Section 3.08 hereof).

SECTION 2.07. Mandatory Redemption.

Article Twelve of the Original Indenture shall not apply to the Notes. The Company is not required to make mandatory redemption or sinking fund payments with respect to the Notes, but may from time to time purchase Notes in the open market or otherwise.

SECTION 2.08. Defeasance and Discharge; Covenant Defeasance .

Article Thirteen of the Original Indenture (as amended and supplemented by this First Supplemental Indenture) shall apply to the Notes. Furthermore, each of the following shall constitute Additional Defeasible Provisions (as such term is defined in the Original Indenture):

(a) the covenants set forth in ARTICLE 4 of this First Supplemental Indenture; and

(b) the limitation imposed by clause (iv) of Section 8.1(a) of the Indenture (as a result of this First Supplemental Indenture).

SECTION 2.09. Subsidiary Guarantees .

To the extent any Restricted Subsidiary is, and continues to be, on any date after the Issue Date, required to Guarantee the Notes pursuant to Section 10.16 of the Indenture, Article Fourteen of the Original Indenture (as amended and supplemented by this First Supplemental Indenture) shall apply to the Notes.

If, after the Issue Date, a Restricted Subsidiary is required to Guarantee the Notes pursuant to Section 10.16 of the Indenture, then the Company will cause such Restricted Subsidiary to execute and deliver a supplemental indenture in the form attached as Exhibit E hereto, accompanied by an Opinion of Counsel to the Trustee to the effect that such supplemental indenture has been duly authorized, executed and delivered by that Restricted Subsidiary and constitutes a valid and binding agreement of that Restricted Subsidiary, enforceable in accordance with its terms (subject to customary exceptions)

SECTION 2.10. Registration Rights Agreement .

Holders of the Notes shall have the benefit of the Company’s registration obligations with respect to the Notes, and such Holders shall also have certain obligations to indemnify the Company under certain circumstances, all as more fully set forth in the Registration Rights Agreement.

SECTION 2.11. Global Securities .

Notes issued in global form will be substantially in the form of Exhibit A hereto (including the Global Note Legend thereon and the “Schedule of Exchanges of Interests in the Global Note” attached thereto). Notes issued in definitive form will be substantially in the form of Exhibit A hereto (but without the Global Note Legend thereon and without the “Schedule of Exchanges of Interests in the Global Note” attached thereto). Each Global Note will represent such of the outstanding Notes as will be specified therein and each shall provide that it represents the aggregate principal amount of outstanding Notes from time to time endorsed thereon and that the aggregate principal amount of outstanding Notes represented thereby may from time to time be reduced or increased, as appropriate, to reflect exchanges, purchases and redemptions. Any endorsement of a Global Note to reflect the amount of any increase or decrease in the aggregate principal amount of outstanding Notes represented thereby will be made by the Trustee or the custodian, at the direction of the Trustee, in accordance with instructions given by the Holder thereof as required by Section 3.5 of the Indenture.

ARTICLE 3
Amendments to Original Indenture

With respect to the Notes, the Original Indenture is hereby amended as set forth below in this ARTICLE 3; provided , however , that each such amendment shall apply only to the Notes and not to any other series of Securities issued under the Indenture.

SECTION 3.01. Defined Terms.

Subject to the limitations set forth in the preamble to ARTICLE 3 of this First Supplemental Indenture, Section 1.1 of the Original Indenture is hereby amended by inserting or restating, as the case may be, each of the following defined terms in its appropriate alphabetical position:

“ 144A Global Note ” means a Global Note substantially in the form of Exhibit A hereto bearing the Global Note Legend and the Private Placement Legend and deposited with or on behalf of, and registered in the name of, the Depositary or its nominee that will be issued in a denomination equal to the outstanding principal amount of the Notes sold in reliance on Rule 144A.

“ Acquired Debt ” means, with respect to any specified Person:

(1) Indebtedness of any other Person existing at the time such other Person is merged with or into or became a Subsidiary of such specified Person, regardless of whether such Indebtedness is incurred in connection with, or in contemplation of, such other Person merging with or into, or becoming a Restricted Subsidiary of, such specified Person, but excluding Indebtedness which is extinguished, retired or repaid in connection with such Person merging with or becoming a Subsidiary of such specified Person; and

(2) Indebtedness secured by a Lien encumbering any asset acquired by such specified Person.

“ Additional Assets ” means:

(1) any property or assets (other than Indebtedness and Capital Stock) to be used by the Company or a Restricted Subsidiary in a Related Business;

(2) the Capital Stock of a Person that becomes a Restricted Subsidiary as a result of the acquisition of such Capital Stock by the Company or another Restricted Subsidiary;

(3) Capital Stock constituting a minority interest in any Person that at such time is a Restricted Subsidiary; or

(4) Capital Stock of any Restricted Subsidiary; provided that all the Capital Stock of such Subsidiary held by the Company or any of its Restricted Subsidiaries shall entitle the Company or such Restricted Subsidiary to not less than a pro rata portion of all dividends or other distributions made by such Subsidiary upon any of such Capital Stock;

provided , however , that in the case of clauses (2), (3) and (4), such Subsidiary is primarily engaged in a Related Business.

“ Additional Notes ” means additional Notes (other than the Notes issued on the Issue Date) issued under the Indenture pursuant to Section 2.02 of the First Supplemental Indenture.

“ Adjusted Consolidated Net Tangible Assets ” means, with respect to any specified Person or Persons (all of such specified Persons, whether one or more, being referred to in this definition as the “ Referent Person ”), as of the date of determination (without duplication), the remainder of:

(a) the sum of:

(i) discounted future net revenues from proved oil and gas reserves of such Person and its Restricted Subsidiaries calculated in accordance with SEC guidelines before any provincial, territorial, state, federal or foreign income taxes, as estimated by the Company in a reserve report prepared as of the end of the Company’s most recently completed fiscal year for which audited financial statements are available and giving effect to applicable Oil and Natural Gas Hedging Contracts, as increased by, as of the date of determination, the estimated discounted future net revenues from:

(A) estimated proved oil and gas reserves acquired since such year end, which reserves were not reflected in such year-end reserve report; and

(B) estimated oil and gas reserves attributable to upward revisions of estimates of proved oil and gas reserves (including previously estimated development costs incurred during the period and the accretion of discount since the prior period end) since such year end due to exploration, development, exploitation or other activities;

and decreased by, as of the date of determination, the estimated discounted future net revenues from:

(C) estimated proved oil and gas reserves reflected in such reserve report produced or disposed of since such year end; and

(D) estimated oil and gas reserves attributable to downward revisions of estimates of proved oil and gas reserves reflected in such reserve report since such year end due to changes in geological conditions or other factors that would, in accordance with standard industry practice, cause such revisions, in each case described in this clause (i) calculated in accordance with SEC guidelines and estimated by the Company’s petroleum engineers or any independent petroleum engineers engaged by the Company for that purpose;

(ii) the capitalized costs that are attributable to Oil and Gas Properties of the Referent Person and its Restricted Subsidiaries to which no proved oil and gas reserves are attributable, based on the Company’s books and records as of a

date no earlier than the date of the Company’s latest available annual or quarterly financial statements;

(iii) the Net Working Capital of the Referent Person on a date no earlier than the date of the Company’s latest annual or quarterly financial statements; and

(iv) the greater of:

(A) the net book value of other tangible assets of the Referent Person and its Restricted Subsidiaries, as of a date no earlier than the date of the Company’s latest annual or quarterly financial statements, and

(B) the appraised value, as estimated by independent appraisers, of other tangible assets of the Referent Person and its Restricted Subsidiaries, as of a date no earlier than the date of the Company’s latest audited financial statements ( provided that the Company shall not be required to obtain such appraisal solely for the purpose of determining this value); minus

(b) the sum of:

(i) the net book value of any Capital Stock of a Restricted Subsidiary of the Referent Person that is not owned by the Referent Person or another Restricted Subsidiary of the Referent Person;

(ii) to the extent not otherwise taken into account in determining Adjusted Consolidated Net Tangible Assets of the Referent Person, any net gas-balancing liabilities of the Referent Person and its Restricted Subsidiaries reflected in the Company’s latest audited financial statements;

(iii) to the extent included in (a)(i) above, the discounted future net revenues, calculated in accordance with SEC guidelines (utilizing the prices utilized in the Company’s year-end reserve report), attributable to reserves that are required to be delivered by the Referent Person to third parties to fully satisfy the obligations of the Referent Person and its Restricted Subsidiaries with respect to Volumetric Production Payments (determined, if applicable, using the schedules specified with respect thereto); and

(iv) the discounted future net revenues, calculated in accordance with SEC guidelines, attributable to reserves subject to Dollar-Denominated Production Payments that, based on the estimates of production and price assumptions included in determining the discounted future net revenues specified in (a)(i) above, would be necessary to fully satisfy the payment obligations of the Referent Person and its Subsidiaries with respect to Dollar-Denominated Production Payments (determined, if applicable, using the schedules specified with respect thereto).

If the Company changes its method of accounting from the successful efforts or a similar method to the full cost method of accounting, “ Adjusted Consolidated Net Tangible Assets ” of the Referent Person will continue to be calculated as if the Company were still using the successful efforts or a similar method of accounting.

“ Agent ” means any Security Registrar, Paying Agent or Authenticating Agent.

“ Applicable Procedures ” means, with respect to any transfer or exchange of or for beneficial interests in any Global Note, the rules and procedures of the Depositary, Euroclear and Clearstream that apply to such transfer or exchange.

“ Asset Sale ” means:

(1) the sale, lease, conveyance or other disposition of any assets or rights (including by way of a Production Payment or a sale and leaseback transaction); provided that the sale, lease, conveyance or other disposition of all or substantially all of the assets of the Company and its Restricted Subsidiaries taken as a whole will be governed by the provisions of Article Eight and/or Section 10.14 of this Indenture and not by the provisions of the Asset Sale covenant set forth in Section 10.11 of this Indenture; and

(2) the issuance of Equity Interests in any of the Company’s Restricted Subsidiaries (other than directors’ qualifying shares) or the sale of Equity Interests held by the Company or its Subsidiaries in any of its Subsidiaries.

Notwithstanding the preceding, none of the following items will be deemed to be an Asset Sale:

(1) any single transaction or series of related transactions that involves assets having a Fair Market Value of less than $10.0 million;

(2) a transfer of assets between or among the Company and its Restricted Subsidiaries;

(3) an issuance of Equity Interests by a Restricted Subsidiary to the Company or to a Restricted Subsidiary;

(4) the sale, lease or other disposition of equipment, inventory, products, services, accounts receivable or other assets in the ordinary course of business, including in connection with any compromise, settlement or collection of accounts receivable, and any sale or other disposition of damaged, worn-out or obsolete assets or assets that are no longer useful in the conduct of the business of the Company and its Restricted Subsidiaries;

(5) the sale or other disposition of cash or Cash Equivalents;

(6) a Restricted Payment that does not violate Section 10.8 of this Indenture, including the issuance or sale of Equity Interests or the sale, lease or

other disposition of products, services, equipment, inventory, accounts receivable or other assets pursuant to any such Restricted Payment;

(7) the consummation of a Permitted Investment, including, without limitation, unwinding any Hedging Obligations, and including the issuance or sale of Equity Interests or the sale, lease or other disposition of products, services, equipment, inventory, accounts receivable or other assets pursuant to any such Permitted Investment;

(8) a disposition of Hydrocarbons or mineral products inventory in the ordinary course of business;

(9) the farm-out, lease or sublease of developed or undeveloped crude oil or natural gas properties owned or held by the Company or any Restricted Subsidiary in exchange for crude oil and natural gas properties owned or held by another Person;

(10) the creation or perfection of a Lien (but not, except as contemplated in clause (11) below, the sale or other disposition of the properties or assets subject to such Lien);

(11) the creation or perfection of a Permitted Lien and the exercise by any Person in whose favor a Permitted Lien is granted of any of its rights in respect of that Permitted Lien;

(12) the licensing or sublicensing of intellectual property, including, without limitation, licenses for seismic data, in the ordinary course of business and which do not materially interfere with the business of the Company and its Restricted Subsidiaries;

(13) surrender or waiver of contract rights or the settlement, release or surrender of contract, tort or other claims of any kind;

(14) any Production Payments and Reserve Sales; provided that all such Production Payments and Reserve Sales (other than incentive compensation programs on terms that are reasonably customary in the oil and gas business for geologists, geophysicists and other providers of technical services to the Company or a Restricted Subsidiary) shall have been created, incurred, issued, assumed or Guaranteed in connection with the financing of, and within 60 days after the acquisition of, the oil and gas properties that are subject thereto;

(15) the sale or other disposition (regardless of whether in the ordinary course of business) of oil and gas properties; provided that, at the time of such sale or other disposition, such properties do not have attributed to them any proved reserves; and

(16) any trade or exchange by the Company or any Restricted Subsidiary of properties or assets used or useful in a Related Business for other

properties or assets used or useful in a Related Business owned or held by another Person (including Capital Stock of a Person engaged in a Related Business that is or becomes a Restricted Subsidiary), including any cash or Cash Equivalents necessary in order to achieve and exchange equivalent value, provided that the Fair Market Value of the properties or assets traded or exchanged by the Company or such Restricted Subsidiary (including any cash or Cash Equivalents to be delivered by the Company or such Restricted Subsidiary) is reasonably equivalent to the Fair Market Value of the properties or assets (together with any cash or Cash Equivalents) to be received by the Company or such Restricted Subsidiary, and provided, further , that any cash received in the transaction must be applied in accordance with Section 10.11 as if such transaction were an Asset Sale.

“ Asset Sale Offer ” has the meaning set forth in Section 10.11 of this Indenture.

“ Beneficial Owner ” has the meaning assigned to such term in Rule 13d-3 and Rule 13d-5 under the Exchange Act, except that in calculating the beneficial ownership of any particular “person” (as that term is used in Section 13(d)(3) of the Exchange Act), such “person” will be deemed to have beneficial ownership of all securities that such “person” has the right to acquire by conversion or exercise of other securities, whether such right is currently exercisable or is exercisable only after the passage of time or upon the occurrence of a subsequent condition. The terms “ Beneficially Owns ,” “ Beneficially Owned ” and “ Beneficially Owning ” will have a corresponding meaning.

“ Business Day ” means any day other than a Legal Holiday.

“Calculation Date ” has the meaning set forth below in the definition of “ Fixed Charge Coverage Ratio. ”

“ Capital Lease Obligation ” means, at the time any determination is to be made, the amount of the liability in respect of a capital lease that would at that time be required to be capitalized on a balance sheet in accordance with GAAP, and the Stated Maturity thereof shall be the date of the last payment of rent or any other amount due under such lease prior to the first date upon which such lease may be prepaid by the lessee without payment of a penalty.

“ Cash Equivalents ” means:

(1) United States dollars;

(2) Government Securities having maturities of not more than one year from the date of acquisition;

(3) marketable general obligations issued by any state of the United States of America or any political subdivision of any such state or any public instrumentality thereof maturing within one year from the date of acquisition thereof and, at the time of acquisition thereof, having a credit rating of “A” or better from either S&P or Moody’s;

(4) certificates of deposit, demand deposit accounts and eurodollar time deposits with maturities of one year or less from the date of acquisition, bankers’ acceptances with maturities not exceeding one year and overnight bank deposits, in each case, with any domestic commercial bank having capital and surplus in excess of $500.0 million and a Thomson Bank Watch Rating of “B” or better;

(5) repurchase obligations with a term of not more than seven days for underlying securities of the types described in clauses (2), (3) and (4) above entered into with any financial institution meeting the qualifications specified in clause (4) above;

(6) commercial paper having one of the two highest ratings obtainable from Moody’s or S&P and, in each case, maturing within one year after the date of acquisition;

(7) money market funds at least 95% of the assets of which constitute Cash Equivalents of the kinds described in clauses (1) through (6) of this definition; and

(8) deposits in any currency available for withdrawal on demand with any commercial bank that is organized under the laws of any country in which the Company or any Restricted Subsidiary maintains its chief executive office or is engaged in the Related Business; provided that all such deposits are made in such accounts in the ordinary course of business.

“ Change of Control ” means:

(1) any “person” or “group” of related persons (as such terms are used in Section 13(d) of the Exchange Act) is or becomes a Beneficial Owner, directly or indirectly, of more than 50% of the total voting power of the Voting Stock of the Company (or its successor by merger, consolidation or purchase of all or substantially all of its properties or assets) (for the purposes of this clause, such person or group w be deemed to Beneficially Own any Voting Stock of the Company held by an entity, if such person or group Beneficially Owns, directly or indirectly, more than 50% of the voting power of the Voting Stock of such entity);

(2) the first day on which a majority of the members of the Board of Directors of the Company are not Continuing Directors;

(3) the direct or indirect sale, lease, transfer, conveyance or other disposition (other than by way of merger or consolidation), in one or a series of related transactions, of all or substantially all of the properties or assets of the Company and its Restricted Subsidiaries taken as a whole to any “person” (as such term is used in Section 13(d) of the Exchange Act); or

(4) the adoption or approval by the stockholders of the Company of a plan for the liquidation or dissolution of the Company.

“ Change of Control Offer ” has the meaning set forth in Section 10.14(a) of this Indenture.

“ Change of Control Payment ” has the meaning set forth in Section 10.14(a) of this Indenture.

“ Change of Control Payment Date ” has the meaning set forth in Section 10.14(a) of this Indenture.

“ Clearstream ” means Clearstream Banking, S.A.

“ Consolidated Cash Flow ” means, with respect to any specified Person for any period, the Consolidated Net Income of such Person for such period plus , without duplication:

(1) provision for taxes based on income or profits of such Person and its Restricted Subsidiaries for such period, to the extent that such provision for taxes was deducted in computing such Consolidated Net Income; plus

(2) the Fixed Charges of such Person and its Restricted Subsidiaries for such period, to the extent that such Fixed Charges were deducted in computing such Consolidated Net Income; plus

(3) exploration and abandonment expense (if applicable) to the extent deducted in calculating Consolidated Net Income; plus

(4) depreciation, depletion, amortization (including amortization of intangibles but excluding amortization of prepaid cash expenses that were paid in a prior period), impairment, other non-cash expenses and other non-cash items (excluding any such non-cash expense to the extent that it represents an accrual of or reserve for cash expenses in any future period or amortization of a prepaid cash expense that was paid in a prior period) of such Person and its Restricted Subsidiaries for such period to the extent that such depreciation, depletion, amortization, impairment and other non-cash expenses were deducted in computing such Consolidated Net Income; plus

(5) any interest expense attributable to any Oil and Natural Gas Hedging Contract, to the extent that such interest expense was deducted in computing such Consolidated Net Income; minus

(6) non-cash items increasing such Consolidated Net Income for such period, other than items that were accrued in the ordinary course of business; and minus

(7) the sum of (a) the amount of deferred revenues that are amortized during such period and are attributable to reserves that are subject to Volumetric Production Payments and (b) amounts recorded in accordance with GAAP as

repayments of principal and interest pursuant to Dollar-Denominated Production Payments;

in each case, on a consolidated basis and determined in accordance with GAAP.

Notwithstanding the preceding sentence, clauses (1) through (5) relating to amounts of a Restricted Subsidiary of the referent Person will be added to Consolidated Net Income to compute Consolidated Cash Flow of such Person only to the extent (and in the same proportion) that the Net Income of such Restricted Subsidiary was included in calculating the Consolidated Net Income of such Person and, to the extent the amounts set forth in clauses (1) through (5) are in excess of those necessary to offset a net loss of such Restricted Subsidiary or if such Restricted Subsidiary has net income for such period included in Consolidated Net Income, only if a corresponding amount would be permitted at the date of determination to be dividended to the referent Person by such Restricted Subsidiary without prior governmental approval (that has not been obtained), pursuant to the terms of its charter and all agreements, instruments, judgments, decrees, orders, statutes, rules and governmental regulations applicable to that Restricted Subsidiary or the holders of its Capital Stock.

“ Consolidated Net Income ” means, with respect to any specified Person for any period, the aggregate of the Net Income of such Person and its Restricted Subsidiaries for such period, on a consolidated basis, determined in accordance with GAAP; provided that:

(1) the Net Income (but not loss) of any Person that is not a Restricted Subsidiary or that is accounted for by the equity method of accounting will be included only to the extent of the amount of dividends or similar distributions paid in cash to the specified Person or a Restricted Subsidiary of the Person;

(2) the Net Income of any Restricted Subsidiary will be excluded to the extent that the declaration or payment of dividends or similar distributions by that Restricted Subsidiary of that Net Income is not at the date of determination permitted without any prior governmental approval (that has not been obtained) or, directly or indirectly, by operation of the terms of its charter or any agreement, instrument, judgment, decree, order, statute, rule or governmental regulation applicable to that Restricted Subsidiary or its stockholders, members or partners;

(3) the cumulative effect of a change in accounting principles will be excluded;

(4) any gain (loss) realized upon the sale or other disposition of any property, plant or equipment of such Person or its consolidated Restricted Subsidiaries (including pursuant to any sale or leaseback transaction) that is not sold or otherwise disposed of in the ordinary course of business and any gain (loss) realized upon the sale or other disposition of any Capital Stock of any Person will be excluded;

(5) any asset impairment writedowns on oil and gas properties under GAAP or SEC guidelines will be excluded;

(6) any non-cash mark-to-market adjustments to assets or liabilities resulting in unrealized gains or losses in respect of Hedging Obligations (including those resulting from the application of SFAS 133) shall be excluded; and

(7) to the extent deducted in the calculation of Net Income, any non-cash or other charges associated with any premium or penalty paid, write-off of deferred financing costs or other financial recapitalization charges in connection with redeeming or retiring any Indebtedness will be excluded.

“ Consolidated Tangible Assets ” means, with respect to any Person as of any date, the amount which, in accordance with GAAP, would be set forth under the caption “Total Assets” (or any like caption) on a consolidated balance sheet of such Person and its Restricted Subsidiaries, less all goodwill, patents, tradenames, trademarks, copyrights, franchises, experimental expenses, organization expenses and any other amounts classified as intangible assets in accordance with GAAP.

“ Continuing Directors ” means, as of any date of determination, any member of the Board of Directors of the Company who:

(1) was a member of such Board of Directors on the Issue Date; or

(2) was nominated for election or elected to such Board of Directors with the approval of a majority of the Continuing Directors who were members of such Board of Directors at the time of such nomination or election.

“ Credit Facilities ” means, with respect to the Company or any of its Restricted Subsidiaries, one or more debt facilities (including, without limitation, the Senior Credit Agreement), commercial paper facilities or Debt Issuances providing for revolving credit loans, term loans, receivables financing (including through the sale of receivables to any lenders, other financiers or to special purpose entities formed to borrow from (or sell such receivables to) any lenders or other financiers against such receivables), letters of credit, bankers’ acceptances, other borrowings or Debt Issuances, in each case, as amended, restated, modified, renewed, extended, refunded, replaced or refinanced (in each case, without limitation as to amount), in whole or in part, from time to time (including through one or more Debt Issuances).

“ Currency Agreement ” means in respect of a Person any foreign exchange contract, currency swap agreement or other similar agreement as to which such Person is a party or a beneficiary.

“ Debt Issuances ” means, with respect to the Company or any Restricted Subsidiary, one or more issuances after the Issue Date of Indebtedness evidenced by notes, debentures, bonds or other similar securities or instruments.

“ De Minimis Amount ” means a principal amount of Indebtedness that does not exceed $1.0 million.

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

“ Definitive Note ” means a certificated Note registered in the name of the Holder thereof and issued in accordance with Section 3.5 of this Indenture, substantially in the form of Exhibit A hereto except that such Note shall not bear the Global Note Legend and shall not have the “Schedule of Exchanges of Interests in the Global Note” attached thereto.

“ Disqualified Stock ” means any Capital Stock that, by its terms (or by the terms of any security into which it is convertible, or for which it is exchangeable, in each case at the option of the holder of the Capital Stock), or upon the happening of any event, matures or is mandatorily redeemable, pursuant to a sinking fund obligation or otherwise, or redeemable at the option of the holder of the Capital Stock, in whole or in part, on or prior to the date that is 91 days after the date on which the Notes mature. Notwithstanding the preceding sentence, any Capital Stock that would constitute Disqualified Stock solely because the holders of the Capital Stock have the right to require the Company to repurchase or redeem such Capital Stock upon the occurrence of a Change of Control or an Asset Sale will not constitute Disqualified Stock if the terms of such Capital Stock provide that the Company may not repurchase or redeem any such Capital Stock pursuant to such provisions unless such repurchase or redemption complies with Section 10.8 of this Indenture. The amount of Disqualified Stock deemed to be outstanding at any time for purposes of this Indenture will be the maximum amount that the Company and its Restricted Subsidiaries may become obligated to pay upon the maturity of, or pursuant to any mandatory redemption provisions of, such Disqualified Stock, exclusive of accrued dividends.

“ Dollar-Denominated Production Payments ” means production payment obligations recorded as liabilities in accordance with GAAP, together with all undertakings and obligations in connection therewith.

“ Domestic Restricted Subsidiary ” means any Restricted Subsidiary that was formed under the laws of the United States or any state of the United States or the District of Columbia or that Guarantees or otherwise provides direct credit support for any Indebtedness of the Company or any Restricted Subsidiary (other than a Foreign Subsidiary).

“ Equity Interests ” means Capital Stock and all warrants, options or other rights to acquire Capital Stock (but excluding any debt security that is convertible into, or exchangeable for, Capital Stock).

“ Equity Offering ” means (i) an offering for cash by the Company of its Capital Stock (other than Disqualified Stock), or options, warrants or rights with respect to its

Capital Stock or (ii) a cash contribution to the Company’s common equity capital from any Person.

“ Euroclear ” means Euroclear Bank, S.A./N.V., as operator of the Euroclear system.

“ Exchange Notes ” means the Notes issued in an Exchange Offer pursuant to Section 3.5(f) of this Indenture.

“ Exchange Offer ” has the meaning set forth in the applicable Registration Rights Agreement.

“ Exchange Offer Registration Statemen t” has the meaning set forth in the applicable Registration Rights Agreement.

“ Existing Indebtedness ” means Indebtedness of the Company and its Subsidiaries (other than Indebtedness under the Senior Credit Agreement, the Notes and the Subsidiary Guarantees) in existence on the Issue Date, until such amounts are repaid.

“ Fair Market Value ” means the value that would be paid by a willing buyer to an unaffiliated willing seller in a transaction not involving distress or necessity of either party. Fair Market Value of an asset or property in excess of $10.0 million shall be determined by the Board of Directors of the Company acting in good faith, whose determination shall be conclusive and evidenced by a resolution of such Board of Directors, and any lesser Fair Market Value may be determined by an officer of the Company acting in good faith.

“ Farm-In Agreement ” means an agreement whereby a Person agrees to pay all or a share of the drilling, completion or other expenses of an exploratory or development well (which agreement may be subject to a maximum payment obligation, after which expenses are shared in accordance with the working or participation interests therein or in accordance with the agreement of the parties) or perform the drilling, completion or other operation on such well in exchange for an ownership interest in an oil or gas property.

“ Farm-Out Agreement ” means a Farm-In Agreement, viewed from the standpoint of the party that transfers an ownership interest to another.

“ First Supplemental Indenture ” means the First Supplemental Indenture dated as of February 2, 2011 by and among the Company, each of the Subsidiary Guarantors parties thereto, and the Trustee.

“ Fixed Charge Coverage Ratio ” means with respect to any specified Person for any four-quarter reference period, the ratio of the Consolidated Cash Flow of such Person for such period to the Fixed Charges of such Person for such period. In the event that the specified Person or any of its Restricted Subsidiaries incurs, assumes, Guarantees, repays, repurchases, redeems, defeases or otherwise discharges any Indebtedness (other than ordinary working capital borrowings) or issues, repurchases or redeems preferred stock subsequent to the commencement of the period for which the Fixed Charge Coverage

Ratio is being calculated and on or prior to the date on which the event for which the calculation of the Fixed Charge Coverage Ratio is made (the “ Calculation Date ”), then the Fixed Charge Coverage Ratio will be calculated giving pro forma effect to such incurrence, assumption, Guarantee, repayment, repurchase, redemption, defeasance or other discharge of Indebtedness, or such issuance, repurchase or redemption of preferred stock, and the use of the proceeds therefrom, as if the same had occurred at the beginning of the applicable four-quarter reference period.

In addition, for purposes of calculating the Fixed Charge Coverage Ratio:

(1) acquisitions that have been made by the specified Person or any of its Restricted Subsidiaries, including through mergers, consolidations or otherwise (including acquisitions of assets used or useful in a Related Business), or any Person or any of its Restricted Subsidiaries acquired by the specified Person or any of its Restricted Subsidiaries, and including in each case any related financing transactions and increases in ownership of Restricted Subsidiaries, during the four-quarter reference period or subsequent to such reference period and on or prior to the Calculation Date will be given pro forma effect as if they had occurred on the first day of the four-quarter reference period, and any Consolidated Cash Flow for such period will be calculated giving pro forma effect to any operating improvements or cost savings that have occurred or are reasonably expected to occur in the reasonable judgment of the principal accounting officer or Chief Financial Officer of the Company (regardless of whether those operating improvements or cost savings could then be reflected in pro forma financial statements prepared in accordance with Regulation S-X under the Securities Act or any other regulation or policy of the SEC related thereto);

(2) the Consolidated Cash Flow attributable to discontinued operations, as determined in accordance with GAAP, and operations or businesses (and ownership interests therein) disposed of prior to the Calculation Date, will be excluded;

(3) the Fixed Charges attributable to discontinued operations, as determined in accordance with GAAP, and operations or businesses (and ownership interests therein) disposed of prior to the Calculation Date, will be excluded, but only to the extent that the obligations giving rise to such Fixed Charges will not be obligations of the specified Person or any of its Restricted Subsidiaries following the Calculation Date;

(4) any Person that is a Restricted Subsidiary on the Calculation Date will be deemed to have been a Restricted Subsidiary at all times during such four-quarter period;

(5) any Person that is not a Restricted Subsidiary on the Calculation Date will be deemed not to have been a Restricted Subsidiary at any time during such four-quarter period; and

(6) if any Indebtedness bears a floating rate of interest, the interest expense on such Indebtedness will be calculated as if the rate in effect on the Calculation Date had been the applicable rate for the entire period (taking into account any Hedging Obligation applicable to such Indebtedness, but if the remaining term of such Hedging Obligation is less than 12 months, then such Hedging Obligation shall only be taken into account for that portion of the period equal to the remaining term thereof).

“ Fixed Charges ” means, with respect to any specified Person for any period, the sum, without duplication, of:

(1) the consolidated interest expense of such Person and its Restricted Subsidiaries for such period, whether paid or accrued (excluding (i) any interest attributable to Production Payments and Reserve Sales, (ii) write-off of deferred financing costs and (iii) accretion of interest charges on future plugging and abandonment obligations, future retirement benefits and other obligations that do not constitute Indebtedness, but including, without limitation, amortization of debt issuance costs and original issue discount, noncash interest payments, the interest component of any deferred payment obligations other than that attributable to any Oil and Natural Gas Hedging Contract, the interest component of all payments associated with Capital Lease Obligations, commissions, discounts and other fees and charges incurred in respect of letter of credit or bankers’ acceptance financings), and net of the effect of all payments made or received pursuant to Interest Rate Agreements; plus

(2) the consolidated interest expense of such Person and its Restricted Subsidiaries that was capitalized during such period; plus

(3) any interest on Indebtedness of another Person that is Guaranteed by the specified Person or one or more of its Restricted Subsidiaries or secured by a Lien on assets of such specified Person or one or more of its Restricted Subsidiaries, regardless of whether such Guarantee or Lien is called upon; plus

(4) all dividends, whether paid or accrued and regardless of whether in cash, on any series of preferred stock of such Person or any of its Restricted Subsidiaries, other than dividends on Equity Interests payable solely in Equity Interests of the Company (other than Disqualified Stock) or to the Company or a Restricted Subsidiary,

in each case, on a consolidated basis and determined in accordance with GAAP.

“ Foreign Subsidiary ” means any Restricted Subsidiary other than a Domestic Restricted Subsidiary.

“ GAAP ” means generally accepted accounting principles in the United States, which are in effect from time to time. All ratios and computations based on GAAP contained in this Indenture will be computed in conformity with GAAP. At any time after the Issue Date, the Company may elect to apply International Financial Reporting

Standards (“ IFRS ”), accounting principles in lieu of GAAP and, upon any such election, references herein to GAAP shall thereafter be construed to mean IFRS (except as otherwise provided in the Indenture); provided that any such election, once made, shall be irrevocable; provided, further , that any calculation or determination in this Indenture that requires the application of GAAP for periods that include fiscal quarters ended prior to the Company’s election to apply IFRS shall remain as previously calculated or determined in accordance with GAAP. The Company shall give notice of any such election made in accordance with this definition to the Trustee and the Holders of the Notes.

“ Global Note Legend ” means the legend set forth in Section 3.5(g)(2) of this Indenture, which is required to be placed on all Global Notes issued under this Indenture.

“ Global Notes ” means, individually and collectively, each of the Restricted Global Notes and the Unrestricted Global Notes deposited with or on behalf of and registered in the name of the Depositary or its nominee, substantially in the form of Exhibit A hereto and that bear the Global Note Legend and that have the “Schedule of Exchanges of Interests in the Global Note” attached thereto, issued in accordance with Section 2.01 of the First Supplemental Indenture and Sections 3.5(b)(3), 3.5(b)(4), 3.5(d) or 3.5(f) of this Indenture.

“ Government Securities ” means direct obligations of, or obligations Guaranteed by, the United States of America, and the payment for which the United States pledges its full faith and credit.

“ Guarantee ” means a guarantee other than by endorsement of negotiable instruments for collection in the ordinary course of business, direct or indirect, in any manner including, without limitation, by way of a pledge of assets or through letters of credit or reimbursement agreements in respect thereof, of all or any part of any Indebtedness (whether arising by virtue of partnership arrangements, or by agreements to keep-well, to purchase assets, goods, securities or services or to take or pay or to maintain financial statement conditions or otherwise), or entered into for purposes of assuring in any other manner the obligee of such Indebtedness of the payment thereof or to protect such obligee against loss in respect thereof (in whole or in part). “ Guarantee ” used as a verb has a correlative meaning.

“ Hedging Obligations ” of any Person means the obligations of such Person pursuant to any Interest Rate and Currency Hedges and any Oil and Natural Gas Hedging Contracts.

“ Hydrocarbons ” means oil, gas, casinghead gas, drip gasoline, natural gasoline, condensate, distillate, liquid hydrocarbons, gaseous hydrocarbons and all constituents, elements or compounds thereof and products refined or processed therefrom.

“ IAI Global Note ” means a Global Note substantially in the form of Exhibit A hereto bearing the Global Note Legend and the Private Placement Legend and deposited with or on behalf of, and registered in the name of, the Depositary or its nominee that will

be issued in a denomination equal to the outstanding principal amount of the Notes transferred to Institutional Accredited Investors in compliance with the Securities Act.

“ Indebtedness ” means, with respect to any specified Person, without duplication, any indebtedness of such Person, regardless of whether contingent:

(1) in respect of borrowed money;

(2) evidenced by bonds, notes, credit agreements, debentures or similar instruments or letters of credit (or reimbursement agreements in respect thereof);

(3) in respect of bankers’ acceptances;

(4) representing Capital Lease Obligations;

(5) in respect of any Guarantee by such Person of production or payment with respect to a Production Payment (but not any other contractual obligation in respect of such Production Payment);

(6) representing the balance deferred and unpaid of the purchase price of any property or services due more than six months after such property is acquired or such services are completed, except any such balance that constitutes an accrued expense or a trade payable; or

(7) representing any Interest Rate and Currency Hedges,

if and to the extent any of the preceding items (other than letters of credit and Interest Rate and Currency Hedges) would appear as a liability upon a balance sheet of the specified Person prepared in accordance with GAAP. In addition, the term “Indebtedness” includes (a) all Indebtedness of any other Person, of the types described in clauses (1) through (7) above, secured by a Lien on any asset of the specified Person (regardless of whether such Indebtedness is assumed by the specified Person), provided that the amount of such Indebtedness will be the lesser of (i) the Fair Market Value of such asset at such date of determination and (ii) the amount of such Indebtedness of such other Person, and (b) to the extent not otherwise included, the Guarantee by the specified Person of any Indebtedness of any other Person, of the types described above in clauses (1) through (7) above. Furthermore, the amount of any Indebtedness outstanding as of any date will be the accreted value thereof, in the case of any Indebtedness issued with original issue discount; and the principal amount thereof, together with any interest thereon that is more than 30 days past due, in the case of any other Indebtedness.

Notwithstanding the foregoing, the following shall not constitute “ Indebtedness ”:

(i) accrued expenses and trade accounts payable arising in the ordinary course of business;

(ii) except as provided in clause (5) of the first paragraph of this definition, any obligation in respect of any Production Payment and Reserve Sales;

(iii) any obligation in respect of any Farm-In Agreement;

(iv) any indebtedness which has been defeased in accordance with GAAP or defeased pursuant to the deposit of cash or Government Securities (in an amount sufficient to satisfy all such indebtedness obligations at maturity or redemption, as applicable, and all payments of interest and premium, if any) in a trust or account created or pledged for the sole benefit of the holders of such indebtedness, and subject to no other Liens, and the other applicable terms of the instrument governing such indebtedness;

(v) oil or natural gas balancing liabilities incurred in the ordinary course of business and consistent with past practice;

(vi) any obligation in respect of any Oil and Natural Gas Hedging Contract;

(vii) any unrealized losses or charges in respect of Hedging Obligations (including those resulting from the application of the Financial Standards Accounting Board’s Accounting Standards Codification (ASC) 815);

(viii) any obligations in respect of (a) bid, performance, completion, surety, appeal and similar bonds, (b) obligations in respect of bankers acceptances, (c) insurance obligations or bonds and other similar bonds and obligations and (d) any Guaranties or letters of credit functioning as or supporting any of the foregoing bonds or obligations; provided , however , that such bonds or obligations mentioned in subclause (a), (b), (c) or (d) of this clause (viii), are incurred in the ordinary course of the business of the Company and its Restricted Subsidiaries and do not relate to obligations for borrowed money;

(ix) any Disqualified Stock of the Company or preferred stock of a Restricted Subsidiary;

(x) any obligation arising from any agreement providing for indemnities, guarantees, purchase price adjustments, holdbacks, contingency payment obligations based on the performance of the acquired or disposed assets or similar obligations (other than Guarantees of Indebtedness) incurred by any Person in connection with the acquisition or disposition of assets; and

(xi) all contracts and other obligations, agreements instruments or arrangements described in clauses (20), (21), (22) and (23) of the definition of “Permitted Liens.”

“ Indirect Participant ” means a Person who holds a beneficial interest in a Global Note through a Participant.

“ Initial Notes ” means the Notes issued on the Issue Date.

“ Institutional Accredited Investor ” means an institution that is an “accredited investor” as defined in Rule 501(a)(1), (2), (3) or (7) under the Securities Act, who is not also a QIB.

“ Interest Rate Agreement ” means with respect to any Person any interest rate protection agreement, interest rate future agreement, interest rate option agreement, interest rate swap agreement, interest rate cap agreement, interest rate collar agreement, interest rate hedge agreement or other similar agreement or arrangement as to which such Person is party or a beneficiary.

“ Interest Rate and Currency Hedges ” of any Person means the obligations of such Person pursuant to any Interest Rate Agreement or Currency Agreement.

“ Investment Grade Rating ” means a rating equal to or higher than:

	(1)		Baa3 (or the equivalent) by Moody’s; or

	(2)		BBB- (or the equivalent) by S&P,

or, if either such entity ceases to rate the Notes for reasons outside of the control of the Company, the equivalent investment grade credit rating from any other Rating Agency.

“ Investment Grade Rating Event ” means the first day on which (a) the Notes have an Investment Grade Rating from at least two Rating Agencies, (b) no Default with respect to the Notes has occurred and is then continuing under this Indenture and (c) the Company has delivered to the Trustee an Officers’ Certificate certifying as to the satisfaction of the conditions set forth in clauses (a) and (b) of this definition.

“ Investments ” means, with respect to any Person, all direct or indirect investments by such Person in other Persons (including Affiliates) in the forms of loans (including Guarantees or other obligations, advances or capital contributions (excluding endorsements of negotiable instruments and documents in the ordinary course of business, and commission, travel and similar advances to officers, employees and consultants made in the ordinary course of business), purchases or other acquisitions for consideration of Indebtedness, Equity Interests or other securities, together with all items that are or would be classified as investments on a balance sheet of such Person prepared in accordance with GAAP. If the Company or any Restricted Subsidiary sells or otherwise disposes of any Equity Interests of any direct or indirect Restricted Subsidiary such that, after giving effect to any such sale or disposition, such Person is no longer a Restricted Subsidiary, the Company will be deemed to have made an Investment on the date of any such sale or disposition equal to the Fair Market Value of the Company’s Investments in such Restricted Subsidiary that were not sold or disposed of in an amount determined as provided in Section 10.8(d) of this Indenture. The acquisition by the Company or any Subsidiary of the Company of a Person that holds an Investment in a third Person will be deemed to be an Investment by the Company or such Subsidiary in

such third Person in an amount equal to the Fair Market Value of the Investments held by the acquired Person in such third Person in an amount determined as provided in Section 10.8(d) of this Indenture. Except as otherwise provided in this Indenture, the amount of an Investment will be determined at the time the Investment is made and without giving effect to subsequent changes in value.

“ Issue Date ” means the first date on which Notes are issued under this Indenture.

“ Legal Holiday ” means a Saturday, a Sunday or a day on which banking institutions in the City of New York or at a place of payment are authorized by law, regulation or executive order to remain closed.

“ Letter of Transmittal ” means the letter of transmittal to be prepared by the Company and sent to all Holders of the Notes for use by such Holders in connection with an Exchange Offer.

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

“ Material Domestic Subsidiary ” means any Domestic Restricted Subsidiary having Consolidated Tangible Assets that constitute more than 0.5% of the Company’s Consolidated Tangible Assets.

“ Moody’s ” means Moody’s Investors Service, Inc. or any successor to the rating agency business thereof.

“ Net Income ” means, with respect to any specified Person, the net income (loss) of such Person, determined in accordance with GAAP and before any reduction in respect of non-cash preferred stock dividends, excluding, however:

(1) any gain or loss, together with any related provision for taxes on such gain or loss, realized in connection with: (a) any Asset Sale (including, without limitation, any cash received pursuant to any sale and leaseback transaction) or (b) the disposition of any securities by such Person or the extinguishment of any Indebtedness of such Person; and

(2) any extraordinary gain or loss, together with any related provision for taxes on such extraordinary gain or loss.

“ Net Proceeds ” means the aggregate cash proceeds received by the Company or any of its Restricted Subsidiaries in respect of any Asset Sale (including, without

limitation, any cash received upon the sale or other disposition of any non-cash consideration received in any Asset Sale), net of:

(1) all legal, accounting, investment banking, title and recording tax expenses, commissions and other fees and expense incurred, and all federal, state, provincial, foreign and local taxes required to be paid or accrued as a liability under GAAP (after taking into account any available tax credits or deductions and any tax sharing agreements), as a consequence of such Asset Sale;

(2) all payments made on any Indebtedness which is secured by any assets subject to such Asset Sale, in accordance with the terms of such Indebtedness, or which must by its terms, or in order to obtain a necessary consent to such Asset Sale, or by applicable law be repaid out of the proceeds from such Asset Sale;

(3) all distributions and other payments required to be made to holders of minority interests in Subsidiaries or joint ventures as a result of such Asset Sale; and

(4) the deduction of appropriate amounts to be provided by the seller as a reserve, in accordance with GAAP, or held in escrow, in either case for adjustment in respect of the sale price or for any liabilities associated with the assets disposed of in such Asset Sale and retained by the Company or any Restricted Subsidiary after such Asset Sale.

“ Net Working Capital ” means (a) all current assets of the Company and its Restricted Subsidiaries except current assets from Oil and Natural Gas Hedging Contracts, less (b) all current liabilities of the Company and its Restricted Subsidiaries, except (i) current liabilities included in Indebtedness, (ii) current liabilities associated with asset retirement obligations relating to oil and gas properties and (iii) any current liabilities from Oil and Natural Gas Hedging Contracts, in each case as set forth in the consolidated financial statements of the Company prepared in accordance with GAAP (excluding any adjustments made pursuant to the Financial Standards Accounting Board’s Accounting Standards Codification (ASC) 815).

“ Non-Recourse Debt ” means Indebtedness:

(1) as to which neither the Company nor any Restricted Subsidiary (a) provides any Guarantee or credit support of any kind (including any undertaking, Guarantee, indemnity, agreement or instrument that would constitute Indebtedness) or (b) is directly or indirectly liable (as a guarantor or otherwise), in each case other than Liens on and pledges of the Equity Interests of any Unrestricted Subsidiary or any joint venture owned by the Company or any Restricted Subsidiary to the extent securing otherwise Non-Recourse Debt of such Unrestricted Subsidiary or joint venture;

(2) no default with respect to which (including any rights that the holders thereof may have to take enforcement action against an Unrestricted

Subsidiary) would permit (upon notice, lapse of time or both) any holder of any other Indebtedness of the Company or any Restricted Subsidiary to declare a default under such other Indebtedness or cause the payment thereof to be accelerated or payable prior to its Stated Maturity; and

(3) the explicit terms of which provide there is no recourse against any of the assets of the Company or its Restricted Subsidiaries, except for any Equity Interests referred to in clause (1) of this definition.

“ Non-U.S. Person ” means a Person who is not a U.S. Person.

“ Notes ” means a series of Securities designated as the Company’s 7.25% Senior Notes due 2019, issued pursuant to the Original Indenture, as amended and supplemented by the First Supplemental Indenture.

“ Notice of Default ” means a written notice of the kind specified in Section 5.1(a)(iv) or Section 5.1(a)(v) of this Indenture.

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

“ Offer Amount ” has the meaning set forth in Section 10.11(g) of this Indenture.

“ Offer Period ” has the meaning set forth in Section 10.11(g) of this Indenture.

“ Oil and Natural Gas Hedging Contract ” means any Hydrocarbon hedging agreements and other agreements or arrangements entered into in the ordinary course of business in the oil and gas industry for the purpose of protecting against fluctuations in Hydrocarbon prices.

“ Original Indenture ” means the Indenture dated as of February 2, 2011 by and between the Company and the Trustee.

“ OPNA ” means Oasis Petroleum North America LLC, a Delaware limited liability company and a Subsidiary of Oasis.

“ Participant ” means, with respect to the Depositary, Euroclear or Clearstream, a Person who has an account with the Depositary, Euroclear or Clearstream, respectively (and, with respect to DTC, shall include Euroclear and Clearstream).

“ Participating Broker-Dealer ” has the meaning set forth in the Registration Rights Agreement.

“ Permitted Acquisition Indebtedness ” means Indebtedness or Disqualified Stock of the Company or any of the Company’s Restricted Subsidiaries to the extent such Indebtedness or Disqualified Stock was Indebtedness or Disqualified Stock of:

(1) a Subsidiary prior to the date on which such Subsidiary became a Restricted Subsidiary; or

(2) a Person that was merged or consolidated into the Company or a Restricted Subsidiary;

provided that on the date such Subsidiary became a Restricted Subsidiary or the date such Person was merged or consolidated into the Company or a Restricted Subsidiary, as applicable, after giving pro forma effect thereto,

(a) the Restricted Subsidiary or the Company, as applicable, would be permitted to incur at least $1.00 of additional Indebtedness pursuant to the Fixed Charge Coverage Ratio test set forth in Section 10.10(a) of this Indenture, or

(b) the Fixed Charge Coverage Ratio for the Company would be greater than the Fixed Charge Coverage Ratio for the Company immediately prior to such transaction.

“ Permitted Business Investments ” means Investments and expenditures made in the ordinary course of, and of a nature that is or shall have become customary in, a Related Business as means of actively exploiting, exploring for, acquiring, developing, processing, gathering, marketing or transporting oil, natural gas, other Hydrocarbons and minerals (including with respect to plugging and abandonment) through agreements, transactions, interests or arrangements that permit one to share risks or costs of such activities or comply with regulatory requirements regarding local ownership, including without limitation: (a) ownership interests in oil, natural gas, other Hydrocarbons and minerals properties, liquefied natural gas facilities, processing facilities, gathering systems, pipelines, storage facilities or related systems or ancillary real property interests; (b) Investments in the form of or pursuant to operating agreements, working interests, royalty interests, mineral leases, processing agreements, Farm-In Agreements, Farm-Out Agreements, contracts for the sale, transportation or exchange of oil, natural gas and other Hydrocarbons and minerals, production sharing agreements, participation agreements, development agreements, area of mutual interest agreements, unitization agreements, pooling agreements, joint bidding agreements, service contracts, joint venture agreements, partnership agreements (whether general or limited), subscription agreements, stock purchase agreements, stockholder agreements and other similar agreements (including for limited liability companies) with third parties; and (c) direct or indirect ownership interests in drilling rigs and related equipment, including, without limitation, transportation equipment.

“ Permitted Investments ” means:

(1) any Investment in the Company or in a Restricted Subsidiary;

(2) any Investment in Cash Equivalents;

(3) any Investment by the Company or any Restricted Subsidiary in a Person, if as a result of such Investment:

(a) such Person becomes a Restricted Subsidiary; or

(b) such Person is merged or consolidated with or into, or transfers or conveys substantially all of its properties or assets to, or is liquidated into, the Company or a Restricted Subsidiary;

(4) any Investment made as a result of the receipt of non-cash consideration from an Asset Sale that was made pursuant to and in compliance with Section 10.11 of this Indenture;

(5) any Investments received in compromise or resolution of (a) obligations of trade creditors or customers that were incurred in the ordinary course of business of the Company or any of its Restricted Subsidiaries, including pursuant to any plan of reorganization or similar arrangement upon the bankruptcy or insolvency of any trade creditor or customer, or (b) litigation, arbitration or other disputes with Persons who are not Affiliates;

(6) Investments represented by Hedging Obligations;

(7) advances to or reimbursements of employees for moving, entertainment and travel expenses, drawing accounts and similar expenditures in the ordinary course of business, in each case to the extent they constitute Investments;

(8) loans or advances to employees in the ordinary course of business or consistent with past practice, in each case to the extent they constitute Investments;

(9) advances and prepayments for asset purchases in the ordinary course of business in a Related Business of the Company or any of its Restricted Subsidiaries;

(10) receivables owing to the Company or any Restricted Subsidiary created or acquired in the ordinary course of business and payable or dischargeable in accordance with customary trade terms; provided , however , that such trade terms may include such concessionary trade terms as the Company or any such Restricted Subsidiary deems reasonable under the circumstances;

(11) surety and performance bonds and workers’ compensation, utility, lease, tax, performance and similar deposits and prepaid expenses in the ordinary course of business;

(12) guarantees by the Company or any of its Restricted Subsidiaries of operating leases (other than Capital Lease Obligations) or of other obligations that

do not constitute Indebtedness, in each case entered into by the Company or any such Restricted Subsidiary in the ordinary course of business;

(13) Investments of a Restricted Subsidiary acquired after the Issue Date or of any entity merged into the Company or merged into or consolidated with a Restricted Subsidiary in accordance with Article Eight or Section 14.4 (as applicable) of this Indenture to the extent that such Investments were not made in contemplation of or in connection with such acquisition, merger or consolidation and were in existence on the date of such acquisition, merger or consolidation;

(14) Permitted Business Investments;

(15) Investments received as a result of a foreclosure by the Company or any of its Restricted Subsidiaries with respect to any secured Investment in default;

(16) Investments in any units of any oil and gas royalty trust;

(17) Investments existing on the Issue Date, and any extension, modification or renewal of any such Investments existing on the Issue Date, but only to the extent not involving additional advances, contributions or other Investments of cash or other assets or other increases of such Investments (other than as a result of the accrual or accretion of interest or original issue discount or the issuance of pay-in-kind securities, in each case, pursuant to the terms of such Investments as in effect on the Issue Date);

(18) repurchases of or other Investments in the Notes; and

(19) other Investments in any Person having an aggregate Fair Market Value (measured on the date each such Investment was made and without giving effect to subsequent changes in value), when taken together with all other Investments made pursuant to this clause (19) that are at the time outstanding not to exceed the greater of (a) 3.0% of Adjusted Consolidated Net Tangible Assets or (b) $20.0 million.

“ Permitted Liens ” means, with respect to any Person:

(1) Liens securing Indebtedness incurred under Credit Facilities pursuant to clause (i) of Section 10.10(b) of this Indenture; provided that the aggregate amount of such indebtedness does not exceed the aggregate amount that would be allowed under clause (i) of Section 10.10(b) of this Indenture;

(2) Liens to secure Indebtedness (including Capital Lease Obligations) permitted by clause (iv) of Section 10.10(b) of this Indenture covering only the assets acquired with or financed by such Indebtedness;

(3) pledges or deposits by such Person under workers’ compensation laws, unemployment insurance laws or similar legislation, or good faith deposits

in connection with bids, tenders, contracts (other than for the payment of Indebtedness) or leases to which such Person is a party, or deposits to secure public or statutory obligations of such Person or deposits or cash or United States government bonds to secure surety or appeal bonds to which such Person is a party, or deposits as security for contested taxes or import or customs duties or for the payment of rent, in each case incurred in the ordinary course of business;

(4) landlords’, carriers’, warehousemen’s, mechanics’, materialmen’s, repairmen’s or similar Liens arising by contract or statute in the ordinary course of business and with respect to amounts which are not yet delinquent or are being contested in good faith by appropriate proceedings;

(5) Liens for taxes, assessments or other governmental charges or which are being contested in good faith by appropriate proceedings provided appropriate reserves required pursuant to GAAP have been made in respect thereof;

(6) Liens in favor of the issuers of surety or performance bonds or bankers’ acceptances issued pursuant to the request of and for the account of such Person in the ordinary course of its business;

(7) encumbrances, easements or reservations of, or rights of others for, licenses, rights of way, sewers, electric lines, telegraph and telephone lines and other similar purposes, or zoning or other restrictions as to the use of real properties or Liens incidental to the conduct of the business of such Person or to the ownership of its properties which do not in the aggregate materially adversely affect the value of said properties or materially impair their use in the operation of the business of such Person;

(8) leases and subleases of real property which do not materially interfere with the ordinary conduct of the business of the Company and its Restricted Subsidiaries, taken as a whole;

(9) any attachment or judgment Liens not giving rise to an Event of Default;

(10) Liens for the purpose of securing the payment of all or a part of the purchase price of, or Capital Lease Obligations with respect to, or the repair, improvement or construction cost of, assets or property acquired or repaired, improved or constructed in the ordinary course of business; provided that:

(a) the aggregate principal amount of Indebtedness secured by such Liens is otherwise permitted to be incurred under this Indenture and does not exceed the cost of the assets or property so acquired or repaired, improved or constructed plus fees and expenses in connection therewith; and

(b) such Liens are created within 180 days of repair, improvement or construction or acquisition of such assets or property and do not encumber any other assets or property of the Company or any Restricted Subsidiary other than such assets or property and assets affixed or appurtenant thereto (including improvements);

(11) Liens arising solely by virtue of any statutory or common law provisions relating to banker’s Liens, rights of set-off or similar rights and remedies as to deposit accounts or other funds maintained or deposited with a depositary institution; provided that:

(a) such deposit account is not a dedicated cash collateral account and is not subject to restrictions against access by the Company in excess of those set forth by regulations promulgated by the Federal Reserve Board; and

(b) such deposit account is not intended by the Company or any Restricted Subsidiary to provide collateral to the depository institution;

(12) Liens arising from Uniform Commercial Code financing statement filings regarding operating leases entered into by the Company and its Restricted Subsidiaries in the ordinary course of business;

(13) Liens existing on the Issue Date;

(14) Liens on property at the time the Company or a Restricted Subsidiary acquired the property, including any acquisition by means of a merger or consolidation with or into the Company or a Restricted Subsidiary; provided , however , that such Liens are not created, incurred or assumed in connection with, or in contemplation of, such acquisition; provided further , however , that such Liens may not extend to any other property owned by the Company or any Restricted Subsidiary other than those of the Person merged or consolidated with the Company or such Restricted Subsidiary;

(15) Liens on property or Capital Stock of a Person at the time such Person becomes a Restricted Subsidiary; provided , however , that such Liens are not created, incurred or assumed in connection with, or in contemplation of, such other Person becoming a Restricted Subsidiary; provided further , however , that such Liens may not extend to any other property owned by the Company or any Restricted Subsidiary;

(16) Liens securing Indebtedness or other obligations of a Restricted Subsidiary owing to the Company or a Subsidiary Guarantor;

(17) Liens securing the Notes, the Subsidiary Guarantees and other obligations arising under this Indenture;

(18) Liens securing Permitted Refinancing Indebtedness of the Company or a Restricted Subsidiary incurred to refinance Indebtedness of the Company or a Restricted Subsidiary that was previously so secured; provided that any such Lien is limited to all or part of the same property or assets (plus improvements, accessions, proceeds or dividends or distributions in respect thereof) that secured (or, under the written arrangements under which the original Lien arose, could secure) the Indebtedness being refinanced or is in respect of property or assets that is the security for a Permitted Lien hereunder;

(19) Liens in respect of Production Payments and Reserve Sales;

(20) Liens on pipelines and pipeline facilities that arise by operation of law;

(21) Liens arising under joint venture agreements, partnership agreements, oil and gas leases or subleases, assignments, purchase and sale agreements, division orders, contracts for the sale, purchasing, processing, transportation or exchange of oil or natural gas, unitization and pooling declarations and agreements, development agreements, area of mutual interest agreements, licenses, sublicenses, net profits interests, participation agreements, Farm-Out Agreements, Farm-In Agreements, carried working interest, joint operating, unitization, royalty, sales and similar agreements relating to the exploration or development of, or production from, oil and gas properties entered into in the ordinary course of business in a Related Business;

(22) Liens reserved in oil and gas mineral leases for bonus, royalty or rental payments and for compliance with the terms of such leases;

(23) Liens on, or related to, properties or assets to secure all or part of the costs incurred in the ordinary course of a Related Business for exploration, drilling, development, production, processing, transportation, marketing, storage, abandonment or operation;

(24) Liens arising under this Indenture in favor of the Trustee for its own benefit and similar Liens in favor of other trustees, agents and representatives arising under instruments governing Indebtedness permitted to be incurred under this Indenture, provided that such Liens are solely for the benefit of the trustees, agents or representatives in their capacities as such and not for the benefit of the holders of the Indebtedness;

(25) Liens securing obligations of the Company and its Restricted Subsidiaries under non-speculative Hedging Obligations;

(26) Liens on and pledges of the Equity Interests of any Unrestricted Subsidiary or any joint venture owned by the Company or any Restricted Subsidiary to the extent securing Non-Recourse Debt of such Unrestricted Subsidiary or joint venture;

(27) Liens securing Indebtedness of any Foreign Subsidiary which Indebtedness is permitted by this Indenture; and

(28) Liens incurred in the ordinary course of business of the Company or any Restricted Subsidiary with respect to obligations that, at any one time outstanding, do not exceed the greater of (a) $10.0 million and (b) 1.0% of Adjusted Consolidated Net Tangible Assets of the Company.

“ Permitted Refinancing Indebtedness ” means any Indebtedness of the Company or any of its Restricted Subsidiaries, any Disqualified Stock of the Company or any preferred stock of any Restricted Subsidiary (a) issued in exchange for, or the net proceeds of which are used to extend, renew, refund, refinance, replace, defease, discharge or otherwise retire for value, in whole or in part, or (b) constituting an amendment, modification or supplement to or a deferral or renewal of ((a) and (b) above, collectively, a “ Refinancing ”), any other Indebtedness of the Company or any of its Restricted Subsidiaries (other than intercompany Indebtedness), any Disqualified Stock of the Company or any preferred stock of a Restricted Subsidiary in a principal amount or, in the case of Disqualified Stock of the Company or preferred stock of a Restricted Subsidiary, liquidation preference, not to exceed (after deduction of reasonable and customary fees and expenses incurred in connection with the Refinancing) the lesser of:

(1) the principal amount or, in the case of Disqualified Stock or preferred stock, liquidation preference, of the Indebtedness, Disqualified Stock or preferred stock so Refinanced ( plus , in the case of Indebtedness, the amount of premium, if any paid in connection therewith), and

(2) if the Indebtedness being Refinanced was issued with any original issue discount, the accreted value of such Indebtedness (as determined in accordance with GAAP) at the time of such Refinancing.

Notwithstanding the preceding, no Indebtedness, Disqualified Stock or preferred stock will be deemed to be Permitted Refinancing Indebtedness, unless:

(1) such Indebtedness, Disqualified Stock or preferred stock has a final maturity date or redemption date, as applicable, no earlier than the final maturity date or redemption date, as applicable, of, and has a Weighted Average Life to Maturity equal to or greater than the Weighted Average Life to Maturity of, the Indebtedness, Disqualified Stock or preferred stock being Refinanced;

(2) if the Indebtedness, Disqualified Stock or preferred stock being Refinanced is contractually subordinated or otherwise junior in right of payment to the Notes, such Indebtedness, Disqualified Stock or preferred stock has a final maturity date or redemption date, as applicable, no earlier than the final maturity date or redemption date, as applicable, of, and is contractually subordinated or otherwise junior in right of payment to, the Notes, on terms at least as favorable to the Holders of Notes as those contained in the documentation governing the

Indebtedness, Disqualified Stock or preferred stock being Refinanced at the time of the Refinancing; and

(3) such Indebtedness or Disqualified Stock is incurred or issued by the Company or such Indebtedness, Disqualified Stock or preferred stock is incurred or issued by the Restricted Subsidiary who is the obligor on the Indebtedness being Refinanced or the issuer of the Disqualified Stock or preferred stock being Refinanced; provided that a Restricted Subsidiary that is also a Subsidiary Guarantor may guarantee Permitted Refinancing Indebtedness incurred by the Company, regardless of whether such Restricted Subsidiary was an obligor or guarantor of the Indebtedness being Refinanced.

“ Private Placement Legend ” means the legend set forth in Section 3.5(f)(1) of this Indenture to be placed on all Notes issued under this Indenture except where otherwise permitted by the provisions of this Indenture.

“ Production Payments ” means Dollar-Denominated Production Payments and Volumetric Production Payments, collectively.

“ Production Payments and Reserve Sales ” means the grant or transfer by the Company or a Subsidiary of the Company to any Person of a royalty, overriding royalty, net profits interest, Production Payment, partnership or other interest in oil and gas properties, reserves or the right to receive all or a portion of the production or the proceeds from the sale of production attributable to such properties, including any such grants or transfers pursuant to incentive compensation programs on terms that are reasonably customary in the oil and gas business for geologists, geophysicists and other providers of technical services to the Company or a Subsidiary of the Company.

“ Purchase Date ” has the meaning set forth in Section 10.11(g) of this Indenture.

“ QIB ” means a “qualified institutional buyer” as defined in Rule 144A.

“ Rating Agency ” means each of S&P and Moody’s, or if (and only if) S&P or Moody’s or both shall not make a rating on the notes publicly available, a nationally recognized statistical rating agency or agencies, as the case may be, selected by the Company, which shall be substituted for S&P or Moody’s, or both, as the case may be.

“ Registration Rights Agreement ” means (i) with respect to the Initial Notes, that certain registration rights agreement dated as of the Issue Date by and among the Company, the Subsidiary Guarantors and the initial purchasers set forth therein, and (ii) with respect to each issuance of Additional Notes issued in a transaction exempt from the registration requirements of the Securities Act, the registration rights agreement, if any, among the Company, the Subsidiary Guarantors and the Persons purchasing such Additional Notes under the related purchase agreement.

“ Regulation S ” means Regulation S promulgated under the Securities Act.

“ Regulation S Global Note ” means a Global Note substantially in the form of Exhibit A hereto bearing the Global Note Legend and the Private Placement Legend and deposited with or on behalf of and registered in the name of the Depositary or its nominee, issued in a denomination equal to the outstanding principal amount of the Notes sold in reliance on Rule 903 of Regulation S.

“ Related Business ” means any business which is the same as or related, ancillary or complementary to any of the businesses of the Company and its Restricted Subsidiaries on the Issue Date, which includes (a) the acquisition, exploration, exploitation, development, production, operation and disposition of interests in oil, gas and other hydrocarbon properties, and the utilization of the Company’s and its Restricted Subsidiaries’ properties, (b) the gathering, marketing, treating, processing, storage, refining, selling and transporting of any production from such interests or properties and products produced in association therewith, (c) any power generation and electrical transmission business, (d) oil field sales and services and related activities, (e) development, purchase and sale of real estate and interests therein, and (f) any business or activity relating to, arising from, or necessary, appropriate or incidental to the activities described in the foregoing clauses (a) through (e) of this definition.

“ Reporting Failure ” means the failure of the Company to file with the SEC and make available or otherwise deliver to the Trustee and each Holder of Notes, within the time periods specified in Section 10.6 of this Indenture (after giving effect to any grace period specified under Rule 12b-25 under the Exchange Act), the periodic reports, information, documents or other reports that the Company may be required to file with the SEC pursuant to such provision.

“ Restricted Definitive Note ” means a Definitive Note bearing the Private Placement Legend.

“ Restricted Global Note ” means a Global Note bearing the Private Placement Legend.

“ Restricted Investment ” means any Investment other than a Permitted Investment.

“ Restricted Period ” means the 40-day distribution compliance period as defined in Regulation S.

“ Restricted Subsidiary ” means any Subsidiary of the Company other than an Unrestricted Subsidiary.

“ Rule 144 ” means Rule 144 promulgated under the Securities Act.

“ Rule 144A ” means Rule 144A promulgated under the Securities Act.

“ Rule 903 ” means Rule 903 promulgated under the Securities Act.

“ Rule 904 ” means Rule 904 promulgated under the Securities Act.

“ S&P ” means Standard & Poor’s Ratings Services, a division of The McGraw-Hill Companies, Inc.

“ Senior Credit Agreement ” means the Amended and Restated Credit Agreement dated as of February 26, 2010, as amended by that certain First Amendment to Amended and Restated Credit Agreement and Consent dated as of June 3, 2010, as further amended by the Second Amendment to Amended and Restated Credit Agreement and Consent dated as of August 11, 2010, and as further amended by the Third Amendment to Amended and Restated Credit Agreement and Limited Waiver dated as of January 21, 2011, among (i) OPNA, as borrower, (ii) the Company and Oasis Petroleum LLC, a Delaware limited liability company and a Subsidiary of the Company, as guarantors, (iii) BNP Paribas, as administrative agent and lender, and (iv) the lenders party thereto from time to time, and any related notes, Guarantees, collateral documents, instruments and agreements executed in connection therewith, and in each case as amended, restated, modified, supplemented, increased, renewed, refunded, replaced (including replacement after the termination of such credit facility), supplemented, restructured or refinanced in whole or in part from time to time in one or more agreements or instruments.

“ Senior Debt ” means:

(1) all Indebtedness of the Company or any of its Restricted Subsidiaries outstanding under Credit Facilities and all Hedging Obligations with respect thereto;

(2) the Notes and any other Indebtedness of the Company or any of its Restricted Subsidiaries permitted to be incurred under the terms of this Indenture, unless the instrument under which such Indebtedness is incurred expressly provides that it is subordinated in right of payment to the Notes or any Subsidiary Guarantee; and

(3) all Obligations with respect to the items listed in the preceding clauses (1) and (2).

Notwithstanding anything to the contrary in the preceding sentence, Senior Debt will not include:

(a) any intercompany Indebtedness of the Company or any of its Subsidiaries to the Company or any of its Affiliates;

(b) any Indebtedness that is incurred in violation of this Indenture; or

“ Shelf Registration Statement ” means a Shelf Registration Statement as defined in a Registration Rights Agreement.

“ Significant Subsidiary ” means any Restricted Subsidiary that would be a “significant subsidiary” of the Company within the meaning of Rule 1-02 under Regulation S-X under the Securities Act.

“ Stated Maturity ” means, with respect to any installment of interest or principal on any series of Indebtedness, the date on which the payment of interest or principal was scheduled to be paid in the documentation governing such Indebtedness as of its issue date, and will not include any contingent obligations to repay, redeem or repurchase any such interest or principal prior to the date originally scheduled for the payment thereof.

“ Subordinated Debt ” means Indebtedness of the Company or a Subsidiary Guarantor that is contractually subordinated in right of payment (by its terms or the terms of any document or instrument relating thereto), to the Notes or the Subsidiary Guarantee of such Subsidiary Guarantor, as applicable.

“ Subsidiary ” means, with respect to any specified Person:

(1) any corporation, association or other business entity (other than a partnership) of which more than 50% of the total voting power of its Voting Stock is at the time owned or controlled, directly or indirectly, by that Person or one or more of the other Subsidiaries of that Person (or a combination thereof); and

(2) any partnership (a) the sole general partner or the managing general partner of which is such Person or a Subsidiary of such Person or (b) the only general partners of which are that Person or one or more Subsidiaries of that Person (or any combination thereof).

“ Subsidiary Guarantee ” means any Guarantee of the Notes by any Subsidiary Guarantor in accordance with Article Fourteen of this Indenture.

“ Subsidiary Guarantor ” means each Restricted Subsidiary that has become obligated under a Subsidiary Guarantee, in accordance with the terms of the Guarantee provisions of this Indenture, but only for so long as such Subsidiary remains so obligated pursuant to the terms of this Indenture.

“ Unrestricted Definitive Note ” means a Definitive Note that does not bear and is not required to bear the Private Placement Legend.

“ Unrestricted Global Note ” means a Global Note that does not bear and is not required to bear the Private Placement Legend.

“ Unrestricted Subsidiary ” means any Subsidiary of the Company (including any newly acquired or newly formed Subsidiary or a Person becoming a Subsidiary through merger or consolidation or Investment therein) that is designated by the Board of Directors of the Company as an Unrestricted Subsidiary pursuant to a resolution of such Board of Directors, but only to the extent that such Subsidiary:

(1) has no Indebtedness other than Non-Recourse Debt;

(2) is a Person with respect to which neither the Company nor any of its Restricted Subsidiaries has any direct or indirect obligation (a) to subscribe for additional Equity Interests or (b) to maintain or preserve such Person’s financial condition or to cause such Person to achieve any specified levels of operating results; and

(3) has not guaranteed or otherwise directly or indirectly provided credit support for any Indebtedness of the Company or any of its Restricted Subsidiaries, except to the extent such Guarantee or credit support would be released upon such designation.

Any Subsidiary of an Unrestricted Subsidiary shall also be an Unrestricted Subsidiary.

“ Volumetric Production Payments ” means production payment obligations recorded as deferred revenue in accordance with GAAP, together with all related undertakings and obligations.

“ Voting Stock ” of any specified Person as of any date means the Capital Stock of such Person that is at the time entitled (without regard to the occurrence of any contingency and after giving effect to any voting agreement or stockholders’ agreement that effectively transfers voting power) to vote in the election of the Board of Directors of such Person.

“ Weighted Average Life to Maturity ” means, when applied to any Indebtedness at any date, the number of years obtained by dividing:

(1) the sum of the products obtained by multiplying (a) the amount of each then remaining installment, sinking fund, serial maturity or other required payments of principal, including payment at final maturity, in respect of the Indebtedness, by (b) the number of years (calculated to the nearest one-twelfth) that will elapse between such date and the making of such payment; by

(2) the then outstanding principal amount of such Indebtedness.

SECTION 3.02. References to Liquidated Damages.

Subject to the limitations set forth in the preamble to ARTICLE 3 of this First Supplemental Indenture, the Original Indenture is hereby amended such that each reference to “interest” appearing therein shall be deemed to refer to “interest and Liquidated Damages, if any.”

SECTION 3.03. Registration, Registration of Transfer and Exchange.

Subject to the limitations set forth in the preamble to ARTICLE 3 of this First Supplemental Indenture, Section 3.5 of the Original Indenture is hereby amended (i) to permit any Restricted Subsidiary of the Company to serve as Security Registrar and (ii) to add the following language at the end of such Section.

Notwithstanding the foregoing paragraphs of this Section 3.5, the terms and provisions set forth in the following clauses (a) through (h) shall also apply to the Notes. To the extent that any of the terms and provisions of the following clauses (a) through (h) conflict with the express provisions of the foregoing paragraphs of this Section 3.5, the terms and provisions of such clauses (a) through (h) shall govern and be controlling.

(a) Transfer and Exchange of Global Notes . A Global Note may not be transferred as a whole except by the Depositary to a nominee of the Depositary, by a nominee of the Depositary to the Depositary or to another nominee of the Depositary, or by the Depositary or any such nominee to a successor Depositary or a nominee of such successor Depositary. All Global Notes will be exchanged by the Company for Definitive Notes if:

(1) the Company delivers to the Trustee notice from the Depositary that it is unwilling or unable to continue to act as Depositary or that it is no longer a clearing agency registered under the Exchange Act and, in either case, a successor Depositary is not appointed by the Company within 90 days after the date of such notice from the Depositary;

(2) the Company in its sole discretion determines that the Global Notes (in whole but not in part) should be exchanged for Definitive Notes and delivers a written notice to such effect to the Trustee; provided that in no event shall the Regulation S Global Note be exchanged by the Company for Definitive Notes prior to the expiration of the Restricted Period; or

(3) a Default or Event of Default has occurred and is continuing and the Depositary notifies the Trustee of its decision to exchange the Global Notes for Definitive Notes.

Upon the occurrence of any of the preceding events in (1), (2) or (3) above, Definitive Notes shall be issued in such names as the Depositary shall instruct the Trustee. Global Notes also may be exchanged or replaced, in whole or in part, as provided in Sections 3.4 and 3.6 of this Indenture. Every Note authenticated and delivered in exchange for, or in lieu of, a Global Note or any portion thereof, pursuant to this Section 3.5 or Sections 3.4 and 3.6 of this Indenture, shall be authenticated and delivered in the form of, and shall be, a Global Note. A Global Note may not be exchanged for another Note other than as provided in this Section 3.5(a), however, beneficial interests in a Global Note may be transferred and exchanged as provided in Section 3.5(b), (c) or (f) hereof.

(b) Transfer and Exchange of Beneficial Interests in the Global Notes . The transfer and exchange of beneficial interests in the Global Notes will be effected through the Depositary, in accordance with the provisions of this Indenture and the Applicable Procedures. Beneficial interests in the Restricted Global Notes will be subject to restrictions on transfer comparable to those set forth herein to the extent required by the Securities Act. Transfers of beneficial interests in the Global Notes also will require compliance with either subparagraph (1) or (2) below, as applicable, as well as one or more of the other following subparagraphs, as applicable:

(1) Transfer of Beneficial Interests in the Same Global Note . Beneficial interests in any Restricted Global Note may be transferred to Persons who take delivery thereof in the form of a beneficial interest in the same Restricted Global Note in accordance with the transfer restrictions set forth in the Private Placement Legend. Beneficial interests in any Unrestricted Global Note may be transferred to Persons who take delivery thereof in the form of a beneficial interest in an Unrestricted Global Note. No written orders or instructions shall be required to be delivered to the Security Registrar to effect the transfers described in this Section 3.5(b)(1).

(2) All Other Transfers and Exchanges of Beneficial Interests in Global Notes. In connection with all transfers and exchanges of beneficial interests that are not subject to Section 3.5(b)(1) above, the transferor of such beneficial interest must deliver to the Security Registrar either:

(A) both:

(i) a written order from a Participant or an Indirect Participant given to the Depositary in accordance with the Applicable Procedures directing the Depositary to credit or cause to be credited a beneficial interest in another Global Note in an amount equal to the beneficial interest to be transferred or exchanged; and

(ii) instructions given in accordance with the Applicable Procedures containing information regarding the Participant account to be credited with such increase; or

(B) both:

(i) a written order from a Participant or an Indirect Participant given to the Depositary in accordance with the Applicable Procedures directing the Depositary to cause to be issued a Definitive Note in an amount equal to the beneficial interest to be transferred or exchanged; and

(ii) instructions given by the Depositary to the Security Registrar containing information regarding the Person in whose name such Definitive Note shall be registered to effect the transfer or exchange referred to in (1) above.

Upon consummation of an Exchange Offer by the Company in accordance with Section 3.5(f) hereof, the requirements of this Section 3.5(b)(2) shall be deemed to have been satisfied upon receipt by the Security Registrar of the instructions contained in the Letter of Transmittal delivered by the Holder of such beneficial interests in the Restricted Global Notes. Upon satisfaction of all of the requirements for transfer or exchange of beneficial interests in Global Notes contained in this Indenture and the Notes or otherwise applicable under the Securities Act, the Trustee shall adjust the principal amount of the relevant Global Note(s) pursuant to Section 3.5(h) hereof.

(3) Transfer of Beneficial Interests to Another Restricted Global Note. A beneficial interest in any Restricted Global Note may be transferred to a Person who takes delivery thereof in the form of a beneficial interest in another Restricted Global Note if the transfer complies with the requirements of Section 3.5(b)(2) above and the Security Registrar receives the following:

(A) if the transferee will take delivery in the form of a beneficial interest in the 144A Global Note, then the transferor must deliver a certificate in the form of Exhibit B hereto, including the certifications in item (1) thereof;

(B) if the transferee will take delivery in the form of a beneficial interest in the Regulation S Global Note, then the transferor must deliver a certificate in the form of Exhibit B hereto, including the certifications in item (2) thereof; and

(C) if the transferee will take delivery in the form of a beneficial interest in the IAI Global Note, then the transferor must deliver a certificate in the form of Exhibit B hereto, including the certifications, certificates and Opinion of Counsel required by item (3) thereof, if applicable.

(4) Transfer and Exchange of Beneficial Interests in a Restricted Global Note for Beneficial Interests in an Unrestricted Global Note. A beneficial interest in any Restricted Global Note may be exchanged by any holder thereof for a beneficial interest in an Unrestricted Global Note or transferred to a Person who takes delivery thereof in the form of a beneficial interest in an Unrestricted Global Note if the exchange or transfer complies with the requirements of Section 3.5(b)(2) above and:

(A) such exchange or transfer is effected pursuant to an Exchange Offer in accordance with the applicable Registration Rights Agreement and the holder of the beneficial interest to be transferred, in the case of an exchange, or the transferee, in the case of a transfer, certifies in the applicable Letter of Transmittal that it is not (i) a Participating Broker-Dealer, (ii) a Person participating in the distribution of the Exchange Notes or (iii) a Person who is an affiliate (as defined in Rule 144) of the Company;

(B) such transfer is effected pursuant to a Shelf Registration Statement in accordance with the applicable Registration Rights Agreement;

(C) such transfer is effected by a Participating Broker-Dealer pursuant to an Exchange Offer Registration Statement in accordance with the applicable Registration Rights Agreement; or

(D) the Security Registrar receives the following:

(i) if the holder of such beneficial interest in a Restricted Global Note proposes to exchange such beneficial

interest for a beneficial interest in an Unrestricted Global Note, a certificate from such holder in the form of Exhibit C hereto, including the certifications in item (1)(a) thereof; or

(ii) if the holder of such beneficial interest in a Restricted Global Note proposes to transfer such beneficial interest to a Person who shall take delivery thereof in the form of a beneficial interest in an Unrestricted Global Note, a certificate from such holder in the form of Exhibit B hereto, including the certifications in item (4) thereof;

and, in each such case set forth in this subparagraph (D), if the Security Registrar so requests or if the Applicable Procedures so require, an Opinion of Counsel in form reasonably acceptable to the Security Registrar to the effect that such exchange or transfer is in compliance with the Securities Act and that the restrictions on transfer contained herein and in the Private Placement Legend are no longer required in order to maintain compliance with the Securities Act.

If any such transfer is effected pursuant to subparagraph (B) or (D) above at a time when an Unrestricted Global Note has not yet been issued, the Company shall issue and, upon receipt of a Company Order in accordance with Section 3.3 of this Indenture, the Trustee shall authenticate one or more Unrestricted Global Notes in an aggregate principal amount equal to the aggregate principal amount of beneficial interests transferred pursuant to subparagraph (B) or (D) above.

Beneficial interests in an Unrestricted Global Note cannot be exchanged for, or transferred to Persons who take delivery thereof in the form of, a beneficial interest in a Restricted Global Note.

(1) Beneficial Interests in Restricted Global Notes to Restricted Definitive Notes. If any holder of a beneficial interest in a Restricted Global Note proposes to exchange such beneficial interest for a Restricted Definitive Note or to transfer such beneficial interest to a Person who takes delivery thereof in the form of a Restricted Definitive Note, then, upon receipt by the Security Registrar of the following documentation:

(A) if the holder of such beneficial interest in a Restricted Global Note proposes to exchange such beneficial interest for a Restricted Definitive Note, a certificate from such holder in the form of Exhibit C hereto, including the certifications in item (2)(a) thereof;

(B) if such beneficial interest is being transferred to a QIB in accordance with Rule 144A, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (1) thereof;

(C) if such beneficial interest is being transferred to a Non-U.S. Person in an offshore transaction in accordance with Rule 903 or Rule 904, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (2) thereof;

(D) if such beneficial interest is being transferred pursuant to an exemption from the registration requirements of the Securities Act in accordance with Rule 144, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (3)(a) thereof;

(E) if such beneficial interest is being transferred to an Institutional Accredited Investor in reliance on an exemption from the registration requirements of the Securities Act other than those listed in subparagraphs (B) through (D) above, a certificate to the effect set forth in Exhibit B hereto, including the certifications, certificates and Opinion of Counsel required by item (3) thereof, if applicable;

(F) if such beneficial interest is being transferred to the Company or any of its Subsidiaries, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (3)(b) thereof; or

(G) if such beneficial interest is being transferred pursuant to an effective registration statement under the Securities Act, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (3)(c) thereof,

the Trustee shall cause the aggregate principal amount of the applicable Global Note to be reduced accordingly pursuant to Section 3.5(h) hereof, and the Company shall execute and the Trustee shall authenticate and deliver to the Person designated in the instructions a Definitive Note in the appropriate principal amount. Any Definitive Note issued in exchange for a beneficial interest in a Restricted Global Note pursuant to this Section 3.5(c) shall be registered in such name or names and in such authorized denomination or denominations as the holder of such beneficial interest shall instruct the Security Registrar through instructions from the Depositary and the Participant or Indirect Participant. The Trustee shall deliver such Definitive Notes to the Persons in whose names such Notes are so registered. Any Definitive Note issued in exchange for a beneficial interest in a Restricted Global Note pursuant to this Section 3.5(c)(1) shall bear the Private Placement Legend and shall be subject to all restrictions on transfer contained therein.

(2) Beneficial Interests in Restricted Global Notes to Unrestricted Definitive Notes. A holder of a beneficial interest in a Restricted Global Note may exchange such beneficial interest for an Unrestricted Definitive Note or may transfer such beneficial interest to a Person who takes delivery thereof in the form of an Unrestricted Definitive Note only if:

(A) such exchange or transfer is effected pursuant to an Exchange Offer in accordance with the applicable Registration Rights Agreement and the holder of such beneficial interest, in the case of an

exchange, or the transferee, in the case of a transfer, certifies in the applicable Letter of Transmittal that it is not (i) a Participating Broker-Dealer, (ii) a Person participating in the distribution of the Exchange Notes or (iii) a Person who is an affiliate (as defined in Rule 144) of the Company;

(B) such transfer is effected pursuant to a Shelf Registration Statement in accordance with the applicable Registration Rights Agreement;

(C) such transfer is effected by a Participating Broker-Dealer pursuant to an Exchange Offer Registration Statement in accordance with the applicable Registration Rights Agreement; or

(D) the Security Registrar receives the following:

(i) if the holder of such beneficial interest in a Restricted Global Note proposes to exchange such beneficial interest for an Unrestricted Definitive Note, a certificate from such holder in the form of Exhibit C hereto, including the certifications in item (1)(b) thereof; or

(ii) if the holder of such beneficial interest in a Restricted Global Note proposes to transfer such beneficial interest to a Person who shall take delivery thereof in the form of an Unrestricted Definitive Note, a certificate from such holder in the form of Exhibit B hereto, including the certifications in item (4) thereof;

(3) Beneficial Interests in Unrestricted Global Notes to Unrestricted Definitive Notes. If any holder of a beneficial interest in an Unrestricted Global Note proposes to exchange such beneficial interest for a Definitive Note or to transfer such beneficial interest to a Person who takes delivery thereof in the form of a Definitive Note, then, upon satisfaction of the conditions set forth in Section 3.5(b)(2) hereof, the Trustee will cause the aggregate principal amount of the applicable Global Note to be reduced accordingly pursuant to Section 3.5(h) hereof, and the Company will execute and the Trustee will authenticate and deliver to the Person designated in the instructions a Definitive Note in the appropriate principal amount. Any Definitive Note issued in exchange for a beneficial interest pursuant to this Section 3.5(c)(3) will be registered in such name or names and in such authorized denomination or denominations as the holder

of such beneficial interest requests through instructions to the Security Registrar from or through the Depositary and the Participant or Indirect Participant. The Trustee will deliver such Definitive Notes to the Persons in whose names such Notes are so registered. Any Definitive Note issued in exchange for a beneficial interest pursuant to this Section 3.5(c)(3) will not bear the Private Placement Legend.

(d) Transfer and Exchange of Definitive Notes for Beneficial Interests.

(1) Restricted Definitive Notes to Beneficial Interests in Restricted Global Notes. If any Holder of a Restricted Definitive Note proposes to exchange such Note for a beneficial interest in a Restricted Global Note or to transfer such Restricted Definitive Notes to a Person who takes delivery thereof in the form of a beneficial interest in a Restricted Global Note, then, upon receipt by the Security Registrar of the following documentation:

(A) if the Holder of such Restricted Definitive Note proposes to exchange such Note for a beneficial interest in a Restricted Global Note, a certificate from such Holder in the form of Exhibit C hereto, including the certifications in item (2)(b) thereof;

(B) if such Restricted Definitive Note is being transferred to a QIB in accordance with Rule 144A, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (1) thereof;

(C) if such Restricted Definitive Note is being transferred to a Non-U.S. Person in an offshore transaction in accordance with Rule 903 or Rule 904, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (2) thereof;

(D) if such Restricted Definitive Note is being transferred pursuant to an exemption from the registration requirements of the Securities Act in accordance with Rule 144, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (3)(a) thereof;

(E) if such Restricted Definitive Note is being transferred to an Institutional Accredited Investor in reliance on an exemption from the registration requirements of the Securities Act other than those listed in subparagraphs (B) through (D) above, a certificate to the effect set forth in Exhibit B hereto, including the certifications, certificates and Opinion of Counsel required by item (3) thereof, if applicable;

(F) if such Restricted Definitive Note is being transferred to the Company or any of its Subsidiaries, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (3)(b) thereof; or

(G) if such Restricted Definitive Note is being transferred pursuant to an effective registration statement under the Securities Act, a certificate to the

effect set forth in Exhibit B hereto, including the certifications in item (3)(c) thereof,

the Trustee will cancel the Restricted Definitive Note, increase or cause to be increased the aggregate principal amount of, in the case of clause (A) above, the appropriate Restricted Global Note, in the case of clause (B) above, the 144A Global Note, in the case of clause (C) above, the Regulation S Global Note, and in all other cases, the IAI Global Note.

(2) Restricted Definitive Notes to Beneficial Interests in Unrestricted Global Notes. A Holder of a Restricted Definitive Note may exchange such Note for a beneficial interest in an Unrestricted Global Note or transfer such Restricted Definitive Note to a Person who takes delivery thereof in the form of a beneficial interest in an Unrestricted Global Note only if:

(A) such exchange or transfer is effected pursuant to an Exchange Offer in accordance with the applicable Registration Rights Agreement and the Holder, in the case of an exchange, or the transferee, in the case of a transfer, certifies in the applicable Letter of Transmittal that it is not (i) a Participating Broker-Dealer, (ii) a Person participating in the distribution of the Exchange Notes or (iii) a Person who is an affiliate (as defined in Rule 144) of the Company;

(B) such transfer is effected pursuant to a Shelf Registration Statement in accordance with the applicable Registration Rights Agreement;

(C) such transfer is effected by a Participating Broker-Dealer pursuant to an Exchange Offer Registration Statement in accordance with the applicable Registration Rights Agreement; or

(D) the Security Registrar receives the following:

(i) if the Holder of such Definitive Notes proposes to exchange such Notes for a beneficial interest in the Unrestricted Global Note, a certificate from such Holder in the form of Exhibit C hereto, including the certifications in item (1)(c) thereof; or

(ii) if the Holder of such Definitive Notes proposes to transfer such Notes to a Person who shall take delivery thereof in the form of a beneficial interest in the Unrestricted Global Note, a certificate from such Holder in the form of Exhibit B hereto, including the certifications in item (4) thereof;

contained herein and in the Private Placement Legend are no longer required in order to maintain compliance with the Securities Act.

Upon satisfaction of the conditions of any of the subparagraphs in this Section 3.5(d)(2), the Trustee will cancel the Definitive Notes and increase or cause to be increased the aggregate principal amount of the Unrestricted Global Note.

(3) Unrestricted Definitive Notes to Beneficial Interests in Unrestricted Global Notes. A Holder of an Unrestricted Definitive Note may exchange such Note for a beneficial interest in an Unrestricted Global Note or transfer such Definitive Notes to a Person who takes delivery thereof in the form of a beneficial interest in an Unrestricted Global Note at any time. Upon receipt of a request for such an exchange or transfer, the Trustee will cancel the applicable Unrestricted Definitive Note and increase or cause to be increased the aggregate principal amount of one of the Unrestricted Global Notes.

If any such exchange or transfer from a Definitive Note to a beneficial interest is effected pursuant to subparagraphs (2)(B), (2)(D) or (3) above at a time when an Unrestricted Global Note has not yet been issued, the Company will issue and, upon receipt of a Company Order in accordance with Section 3.3 of this Indenture, the Trustee will authenticate one or more Unrestricted Global Notes in an aggregate principal amount equal to the principal amount of Definitive Notes so transferred.

(e) Transfer and Exchange of Definitive Notes for Definitive Notes. Upon request by a Holder of Definitive Notes and such Holder’s compliance with the provisions of this Section 3.5(e), the Security Registrar will register the transfer or exchange of Definitive Notes. Prior to such registration of transfer or exchange, the requesting Holder must present or surrender to the Security Registrar the Definitive Notes duly endorsed or accompanied by a written instruction of transfer in form satisfactory to the Security Registrar duly executed by such Holder or by its attorney, duly authorized in writing. In addition, the requesting Holder must provide any additional certifications, documents and information, as applicable, required pursuant to the following provisions of this Section 3.5(e).

(1) Restricted Definitive Notes to Restricted Definitive Notes. Any Restricted Definitive Note may be transferred to and registered in the name of Persons who take delivery thereof in the form of a Restricted Definitive Note if the Security Registrar receives the following:

(A) if the transfer will be made pursuant to Rule 144A, then the transferor must deliver a certificate in the form of Exhibit B hereto, including the certifications in item (1) thereof;

(B) if the transfer will be made pursuant to Rule 903 or Rule 904, then the transferor must deliver a certificate in the form of Exhibit B hereto, including the certifications in item (2) thereof; and

(C) if the transfer will be made pursuant to any other exemption from the registration requirements of the Securities Act, then the transferor must deliver

a certificate in the form of Exhibit B hereto, including the certifications, certificates and Opinion of Counsel required by item (3) thereof, if applicable.

(2) Restricted Definitive Notes to Unrestricted Definitive Notes. Any Restricted Definitive Note may be exchanged by the Holder thereof for an Unrestricted Definitive Note or transferred to a Person or Persons who take delivery thereof in the form of an Unrestricted Definitive Note if:

(B) such transfer is effected pursuant to a Shelf Registration Statement in accordance with the applicable Registration Rights Agreement;

(C) such transfer is effected by a Participating Broker-Dealer pursuant to an Exchange Offer Registration Statement in accordance with the applicable Registration Rights Agreement; or

(D) the Security Registrar receives the following:

(i) if the Holder of such Restricted Definitive Notes proposes to exchange such Notes for an Unrestricted Definitive Note, a certificate from such Holder in the form of Exhibit C hereto, including the certifications in item (1)(d) thereof; or

(ii) if the Holder of such Restricted Definitive Notes proposes to transfer such Notes to a Person who shall take delivery thereof in the form of an Unrestricted Definitive Note, a certificate from such Holder in the form of Exhibit B hereto, including the certifications in item (4) thereof;

and, in each such case set forth in this subparagraph (D), if the Security Registrar so requests, an Opinion of Counsel in form reasonably acceptable to the Security Registrar to the effect that such exchange or transfer is in compliance with the Securities Act and that the restrictions on transfer contained herein and in the Private Placement Legend are no longer required in order to maintain compliance with the Securities Act.

(3) Unrestricted Definitive Notes to Unrestricted Definitive Notes. A Holder of Unrestricted Definitive Notes may transfer such Notes to a Person who takes delivery thereof in the form of an Unrestricted Definitive Note. Upon receipt of a request to

register such a transfer, the Security Registrar shall register the Unrestricted Definitive Notes pursuant to the instructions from the Holder thereof.

(f) Exchange Offer . Upon the occurrence of an Exchange Offer in accordance with the applicable Registration Rights Agreement, the Company will issue and, upon receipt of a Company Order in accordance with Section 3.3 of this Indenture, the Trustee will authenticate:

(1) one or more Unrestricted Global Notes in an aggregate principal amount equal to the principal amount of the beneficial interests in the Restricted Global Notes accepted for exchange in the Exchange Offer by Persons that certify in the applicable Letters of Transmittal that (A) they are not Participating Broker-Dealers, (B) they are not participating in a distribution of the Exchange Notes and (C) they are not affiliates (as defined in Rule 144) of the Company; and

(2) Unrestricted Definitive Notes in an aggregate principal amount equal to the principal amount of the Restricted Definitive Notes accepted for exchange in the Exchange Offer by Persons that certify in the applicable Letters of Transmittal that (A) they are not Participating Broker-Dealers, (B) they are not participating in a distribution of the Exchange Notes and (C) they are not affiliates (as defined in Rule 144) of the Company.

Concurrently with the issuance of such Notes, the Trustee will cause the aggregate principal amount of the applicable Restricted Global Notes to be reduced accordingly, and the Company will execute and the Trustee will authenticate and deliver to the Persons designated by the Holders of Definitive Notes so accepted Unrestricted Definitive Notes in the appropriate principal amount.

(g) Legends. The following legends will appear on the face of all Global Notes and Definitive Notes issued under this Indenture unless specifically stated otherwise in the applicable provisions of this Indenture.

(1) Private Placement Legend .

(A) Except as permitted by subparagraph (B) below, each Global Note and each Definitive Note (and all Notes issued in exchange therefor or substitution thereof) shall bear the legend in substantially the following form:

“THIS NOTE HAS NOT BEEN REGISTERED UNDER THE UNITED STATES SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), OR THE SECURITIES LAWS OF ANY STATE OR OTHER JURISDICTION. NEITHER THIS NOTE NOR ANY INTEREST OR PARTICIPATION HEREIN MAY BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, SUCH REGISTRATION.

THE HOLDER OF THIS NOTE, BY ITS ACCEPTANCE HEREOF, AGREES ON ITS OWN BEHALF AND ON NOTE OF ANY INVESTOR ACCOUNT FOR WHICH IT HAS PURCHASED NOTES, TO OFFER, SELL OR OTHERWISE TRANSFER SUCH NOTE,

PRIOR TO THE DATE (THE “RESALE RESTRICTION TERMINATION DATE”) THAT IS IN THE CASE OF RULE 144A NOTES: ONE YEAR (OR SUCH SHORTER PERIOD THEN REQUIRED UNDER RULE 144 OR ITS SUCCESSOR RULE); OR IN THE CASE OF REGULATION S NOTES: 40 DAYS AFTER THE LATER OF THE ORIGINAL ISSUE DATE HEREOF AND THE LAST DATE ON WHICH THE COMPANY OR ANY AFFILIATE OF THE COMPANY WAS THE OWNER OF THIS NOTE (OR ANY PREDECESSOR OF SUCH NOTE), ONLY (A) TO THE COMPANY, (B) PURSUANT TO A REGISTRATION STATEMENT THAT HAS BEEN DECLARED EFFECTIVE UNDER THE SECURITIES ACT, (C) FOR SO LONG AS THE NOTES ARE ELIGIBLE FOR RESALE PURSUANT TO RULE 144A UNDER THE SECURITIES ACT TO A PERSON IT REASONABLY BELIEVES IS A “QUALIFIED INSTITUTIONAL BUYER” AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER TO WHOM NOTICE IS GIVEN THAT THE TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A, (D) PURSUANT TO OFFERS AND SALES THAT OCCUR OUTSIDE THE UNITED STATES WITHIN THE MEANING OF REGULATION S UNDER THE SECURITIES ACT OR (E) PURSUANT TO ANOTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, SUBJECT TO THE COMPANY’S AND THE TRUSTEE’S RIGHT PRIOR TO ANY SUCH OFFER, SALE OR TRANSFER PURSUANT TO CLAUSE (E) TO REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL, CERTIFICATION AND/OR OTHER INFORMATION SATISFACTORY TO EACH OF THEM. THIS LEGEND WILL BE REMOVED UPON THE REQUEST OF THE HOLDER AFTER THE RESALE RESTRICTION TERMINATION DATE.

IN THE CASE OF REGULATION S NOTES: BY ITS ACQUISITION HEREOF, THE HOLDER HEREOF REPRESENTS THAT IT IS NOT A U.S. PERSON NOR IS IT PURCHASING FOR THE ACCOUNT OF A U.S. PERSON AND IS ACQUIRING THIS SECURITY IN AN OFFSHORE TRANSACTION IN ACCORDANCE WITH REGULATION S UNDER THE SECURITIES ACT. AS USED HEREIN, THE TERMS “OFFSHORE TRANSACTION,” “UNITED STATES” AND “UNITED STATES PERSON” HAVE THE MEANINGS GIVEN TO THEM BY REGULATION S UNDER THE SECURITIES ACT.”

(B) Notwithstanding the foregoing, any Global Note or Definitive Note issued pursuant to subparagraphs (b)(4), (c)(2), (c)(3), (d)(2), (d)(3), (e)(2), (e)(3) or (f) of this Section 3.5 (and all Notes issued in exchange therefor or substitution thereof) will not bear the Private Placement Legend.

(2) Global Note Legend . Each Global Note will bear a legend in substantially the following form:

“THIS GLOBAL NOTE IS HELD BY THE DEPOSITARY (AS DEFINED IN THE INDENTURE GOVERNING THIS NOTE) OR ITS NOMINEE IN CUSTODY FOR THE BENEFIT OF THE BENEFICIAL OWNERS HEREOF, AND IS NOT TRANSFERABLE TO ANY PERSON UNDER ANY CIRCUMSTANCES EXCEPT THAT (1) THE TRUSTEE MAY MAKE SUCH NOTATIONS HEREON AS MAY BE REQUIRED PURSUANT TO SECTION 3.5 OF THE INDENTURE, (2) THIS GLOBAL NOTE MAY BE EXCHANGED IN WHOLE

BUT NOT IN PART PURSUANT TO SECTION 3.5(a) OF THE INDENTURE, (3) THIS GLOBAL NOTE MAY BE DELIVERED TO THE TRUSTEE FOR CANCELLATION PURSUANT TO SECTION 3.9 OF THE INDENTURE AND (4) THIS GLOBAL NOTE MAY BE TRANSFERRED TO A SUCCESSOR DEPOSITARY WITH THE PRIOR WRITTEN CONSENT OF THE COMPANY.

UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR NOTES IN DEFINITIVE FORM, THIS NOTE MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE BY THE DEPOSITARY TO A NOMINEE OF THE DEPOSITARY OR BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR ANOTHER NOMINEE OF THE DEPOSITARY OR BY THE DEPOSITARY OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITARY OR A NOMINEE OF SUCH SUCCESSOR DEPOSITARY. UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (55 WATER STREET, NEW YORK, NEW YORK) (“DTC”), TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS MAY BE REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR SUCH OTHER ENTITY AS MAY BE 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.”

(g) Cancellation and/or Adjustment of Global Notes. At such time as all beneficial interests in a particular Global Note have been exchanged for Definitive Notes or a particular Global Note has been redeemed, repurchased or canceled in whole and not in part, each such Global Note will be returned to or retained and canceled by the Trustee in accordance with Section 3.9 of this Indenture. At any time prior to such cancellation, if any beneficial interest in a Global Note is exchanged for or transferred to a Person who will take delivery thereof in the form of a beneficial interest in another Global Note or for Definitive Notes, the principal amount of Notes represented by such Global Note will be reduced accordingly and an endorsement will be made on such Global Note by the Trustee or by the Depositary at the direction of the Trustee to reflect such reduction; and if the beneficial interest is being exchanged for or transferred to a Person who will take delivery thereof in the form of a beneficial interest in another Global Note, such other Global Note will be increased accordingly and an endorsement will be made on such Global Note by the Trustee or by the Depositary at the direction of the Trustee to reflect such increase.

(h) General Provisions Relating to Transfers and Exchanges.

(1) To permit registrations of transfers and exchanges, the Company will execute and the Trustee will authenticate Global Notes and Definitive Notes upon receipt of a Company Order in accordance with Section 3.3 of this Indenture or at the Security Registrar’s request.

(2) No service charge will be made to a Holder of a beneficial interest in a Global Note or to a Holder of a Definitive Note for any registration of transfer or

exchange, 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 similar governmental charge payable upon exchange or transfer pursuant to Sections 3.4, 9.8, 10.12, 10.15 and 11.6 of this Indenture).

(3) All certifications, certificates and Opinions of Counsel required to be submitted to the Security Registrar pursuant to this Section 3.5 to effect a registration of transfer or exchange may be submitted by facsimile.

(4) All Global Notes and Definitive Notes issued upon any registration of transfer or exchange of Global Notes or Definitive Notes will be the valid obligations of the Company, evidencing the same debt, and entitled to the same benefits under this Indenture, as the Global Notes or Definitive Notes surrendered upon such registration of transfer or exchange.

(5) Neither the Security Registrar nor the Company will be required:

(A) to issue, to register the transfer of or to exchange any Notes during a period beginning at the opening of business 15 days before the day of any selection of Notes for redemption under Section 11.2 of this Indenture and ending at the close of business on the day of selection;

(B) to register the transfer of or to exchange any Note selected for redemption in whole or in part, except the unredeemed portion of any Note being redeemed in part; or

(C) to register the transfer of or to exchange a Note between a record date and the next succeeding Interest Payment Date.

(6) Prior to due presentment for the registration of a transfer of any Note, the Trustee, any Agent and the Company may deem and treat the Person in whose name any Note is registered as the absolute owner of such Note for the purpose of receiving payment of principal of, premium, if any, and interest on such Notes and for all other purposes, and none of the Trustee, any Agent or the Company shall be affected by notice to the contrary.

SECTION 3.04. Defaults and Remedies.

Subject to the limitations set forth in the preamble to ARTICLE 3 of this First Supplemental Indenture, Sections 5.1 and 5.2 of the Original Indenture are hereby amended and restated in their entirety to read as follows:

Section 5.1 Events of Default .

(a) Each of the following is an “ Event of Default ” with respect to the Notes:

(i) default for 30 days in the payment when due of interest on the Notes;

(ii) default in the payment when due of the principal of, or premium, if any, on the Notes;

(iii) failure by the Company to comply with its obligations under Article Eight of this Indenture or to consummate a purchase of Notes when required pursuant to Section 10.11 or Section 10.14 of this Indenture;

(iv) failure by the Company or any of its Restricted Subsidiaries for 30 days after receipt of a written notice (specifying such failure, requiring it to be remedied and stating that such notice is a “Notice of Default” under this Indenture) from the Trustee or the Holders of at least 25% in aggregate principal amount of the then Outstanding Notes to comply with Section 10.8 or Section 10.10 of this Indenture or to comply with the provisions described under Section 10.11 or Section 10.14 of this Indenture to the extent not described in clause (iii) of this Section 5.1(a);

(v) failure by the Company or any of its Restricted Subsidiaries for 60 days (or 180 days in the case of a Reporting Failure) after receipt of a written notice (specifying such failure, requiring it to be remedied and stating that such notice is a “Notice of Default” under this Indenture) from the Trustee or the Holders of at least 25% in aggregate principal amount of the then Outstanding Notes to comply with any of the other agreements in this Indenture or the Notes;

(vi) default under any mortgage, indenture or instrument under which there may be issued or by which there may be secured or evidenced any Indebtedness for money borrowed by the Company or any of its Restricted Subsidiaries (or the payment of which is guaranteed by the Company or any of its Restricted Subsidiaries), other than Indebtedness owed to the Company or any of its Restricted Subsidiaries, whether such Indebtedness or Guarantee now exists, or is created after the Issue Date, which default:

(A) is caused by a failure to pay principal of, or interest or premium, if any, on such Indebtedness prior to the expiration of the grace period provided in such Indebtedness (“ Payment Default ”); or

(B) results in the acceleration of such Indebtedness prior to its maturity;

and, in each case, the principal amount of any such Indebtedness, together with the principal amount of any other such Indebtedness under which there has been a Payment Default or the maturity of which has been so accelerated, aggregates $10.0 million or more;

(vii) failure by the Company or any Significant Subsidiary or any group of Restricted Subsidiaries that, taken together (as of the latest audited consolidated financial statements for the Company and its Restricted Subsidiaries), would constitute a Significant Subsidiary to pay final judgments aggregating in excess of $10.0 million (net of any amounts that a reputable and

creditworthy insurance company has acknowledged liability for in writing), which judgments are not paid, discharged or stayed for a period of 60 days;

(viii) except as permitted by this Indenture, any Subsidiary Guarantee is held in a judicial proceeding to be unenforceable or invalid or ceases for any reason to be in full force and effect, or any Subsidiary Guarantor, or any Person acting on behalf of any Subsidiary Guarantor, denies or disaffirms its obligations under its Subsidiary Guarantee;

(ix) the Company, any Significant Subsidiary or any group of Restricted Subsidiaries that, taken together (as of the latest audited consolidated financial statements for the Company and its Restricted Subsidiaries), would constitute a Significant Subsidiary, pursuant to or within the meaning of Bankruptcy Law:

(A) commences a voluntary case;

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

(D) generally is not paying its debts as they become due; and

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

(A) is for relief against the Company, any Significant Subsidiary or any group of Restricted Subsidiaries that, taken together (as of the latest audited consolidated financial statements for the Company and its Restricted Subsidiaries), would constitute a Significant Subsidiary, in an involuntary case; or

(B) appoints a custodian of the Company, any Significant Subsidiary or any group of Restricted Subsidiaries that, taken together (as of the latest audited consolidated financial statements for the Company and its Restricted Subsidiaries), would constitute a Significant Subsidiary, or for all or substantially all of the property of the Company, any Significant Subsidiary or any group of Restricted Subsidiaries that, taken together (as of the latest audited consolidated financial statements for the Company and its Restricted Subsidiaries), would constitute a Significant Subsidiary; or

(C) orders the liquidation of the Company, any Significant Subsidiary or any group of Restricted Subsidiaries that, taken together (as of the latest audited consolidated financial statements for the Company and its Restricted Subsidiaries), would constitute a Significant Subsidiary;

and the order or decree remains unstayed and in effect for 60 consecutive days.

Section 5.2 Acceleration of Maturity; Rescission and Annulment .

(a) In the case of an Event of Default specified in clause (ix) or clause (x) of Section 5.1(a) of this Indenture, all then Outstanding Notes will become due and payable immediately without further action or notice. If any other Event of Default occurs and is continuing, the Trustee or the Holders of at least 25% in aggregate principal amount of the then Outstanding Notes may declare all of the Notes to be due and payable immediately by notice in writing to the Company and, in case of a notice by Holders, also to the Trustee specifying the respective Event of Default and that it is a notice of acceleration. Upon any such declaration, the Notes shall become due and payable immediately.

(b) At any time after such a declaration of acceleration with respect to the Notes has been made and before a judgment or decree for payment of the money due has been obtained by the Trustee as hereinafter in this Article Five provided, the Holders of a majority in principal amount of the Outstanding Notes, by written notice to the Company and the Trustee, may rescind and annul such declaration and its consequences if:

(i) the Company or one or more of the Subsidiary Guarantors has paid or deposited with the Trustee a sum sufficient to pay:

(A) all overdue interest on all Notes;

(B) the principal of (and premium, if any, on) any Notes which have become due otherwise than by such declaration of acceleration and any interest thereon at the rate or rates prescribed therefor in such Notes;

(C) to the extent that payment of such interest is lawful, interest upon overdue interest at the rate or rates prescribed therefor in such Notes; and

(D) all sums paid or advanced by the Trustee hereunder and the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel; and

(ii) all Events of Default with respect to the Notes, other than the non-payment of the principal of the Notes that have become due solely by such declaration of acceleration, have been cured or waived as provided in Section 5.13 of this Indenture.

No such rescission shall affect any subsequent default or impair any right consequent thereon.

(c) Notwithstanding the foregoing Section 5.2(b), if an Event of Default specified in clause (vi) of Section 5.1(a) above shall have occurred and be continuing, such Event of Default and any consequential acceleration (to the extent not in violation of

any applicable law or in conflict with any judgment or decree of a court of competent jurisdiction) shall be automatically rescinded (i)(A) if the Indebtedness that is the subject of such Event of Default has been repaid or (B) if the default relating to such Indebtedness is waived by the holders of such Indebtedness or cured and if such Indebtedness has been accelerated, then the holders thereof have rescinded their declaration of acceleration in respect of such Indebtedness, in each case within 20 days after the declaration of acceleration with respect thereto, and (ii) if any other existing Events of Default, except non-payment of principal, premium, if any, or interest on the Notes that became due solely because of the acceleration of the Notes, have been cured or waived.

SECTION 3.05. Notice of Defaults.

Subject to the limitations set forth in the preamble to ARTICLE 3 of this First Supplemental Indenture, Section 6.2 of the Original Indenture is hereby amended and restated in its entirety to read as follows:

Section 6.2 Notice of Defaults .

Within 90 days after the occurrence of any Default hereunder with respect to the Notes, the Trustee shall transmit by mail to all Holders of Notes, as their names and addresses appear in the Security Register, notice of such Default hereunder known to the Trustee, unless such Default shall have been cured or waived; provided , however , that, except in the case of a Default in the payment of the principal of or any premium or interest with respect to any Note, the Trustee may withhold from Holders of Notes notice of any continuing Default or Event of Default if the Trustee in good faith determines that the withholding of such notice is in the interest of the Holders of Notes; and, provided , further , that (i) in the case of any Default of the character specified in Section 5.1(a)(iv), no such notice to Holders shall be given until at least 30 days after the occurrence thereof, and (ii) in the case of any Default of the character specified in Section 5.1(a)(v), no such notice to Holders shall be given until at least 60 days after the occurrence thereof.

SECTION 3.06. Compensation and Reimbursement.

Subject to the limitations set forth in the preamble to ARTICLE 3 of this First Supplemental Indenture, the third paragraph of Section 6.7 of the Original Indenture is hereby amended and restated in its entirety to read as follows:

Without limiting any rights available to the Trustee under applicable law, when the Trustee incurs expenses or renders services in connection with an Event of Default specified in Section 5.1(a)(ix) or Section 5.1(a)(x), the expenses (including the reasonable charges and expenses of its counsel) and the compensation for the services of the Trustee are intended to constitute expenses of administration under any applicable Bankruptcy Law.

SECTION 3.07. Merger, Consolidation or Sale of Substantially All Assets.

Subject to the limitations set forth in the preamble to ARTICLE 3 of this First Supplemental Indenture, Article Eight of the Original Indenture is hereby amended and restated in its entirety to read as follows:

ARTICLE EIGHT
MERGER, CONSOLIDATION OR SALE OF SUBSTANTIALLY ALL ASSETS

Section 8.1 Company May Consolidate, Etc., Only on Certain Terms .

(a) The Company will not (1) consolidate or merge with or into another Person (regardless of whether the Company is the surviving corporation), convert into another form of entity or continue in another jurisdiction; or (2), directly or indirectly, sell, assign, transfer, lease, convey or otherwise dispose of all or substantially all of its properties or assets, in one or more related transactions, to another Person, unless:

(i) either: (A) the Company is the surviving corporation; or (B) the Person formed by or surviving any such consolidation or merger or resulting from such conversion (if other than the Company) or to which such sale, assignment, transfer, lease, conveyance or other disposition has been made is a corporation, limited liability company or limited partnership organized or existing under the laws of the United States, any state of the United States or the District of Columbia;

(ii) the Person formed by or surviving any such conversion, consolidation or merger (if other than the Company) or the Person to which such sale, assignment, transfer, lease, conveyance or other disposition has been made assumes all the obligations of the Company under the Notes and this Indenture (and the Registration Rights Agreement, if any obligations thereunder remain unsatisfied) pursuant to agreements reasonably satisfactory to the Trustee; provided that, unless such Person is a corporation, a corporate co-issuer of the Notes will be added to this Indenture by a supplement reasonably satisfactory to the Trustee;

(iii) immediately after such transaction or transactions, no Default or Event of Default exists;

(iv) the Company or the Person formed by or surviving any such consolidation or merger (if other than the Company), or to which such sale, assignment, transfer, lease, conveyance or other disposition has been made, would (on the date of such transaction after giving pro forma effect thereto and to any related financing transactions as if the same had occurred at the beginning of the applicable four-quarter period) either:

(A) be permitted to incur at least $1.00 of additional Indebtedness pursuant to the Fixed Charge Coverage Ratio test set forth in Section 10.10(a) of this Indenture; or

(B) have a Fixed Charge Coverage Ratio that is not less than the Fixed Charge Coverage Ratio of the Company and its Restricted Subsidiaries immediately before such transaction; and

(v) the Company has delivered to the Trustee an Officers’ Certificate and an Opinion of Counsel, each stating that such consolidation, merger, conveyance, sale, transfer or lease and such supplemental indenture, if any, comply with this Article Eight and that all conditions precedent herein provided for relating to such transaction have been complied with.

(b) For purposes of this Section 8.1, the sale, assignment, transfer, lease, conveyance or other disposition of all or substantially all of the properties or assets of one or more Subsidiaries of the Company, which properties or assets, if held by the Company instead of such Subsidiaries, would constitute all or substantially all of the properties or assets of the Company on a consolidated basis, shall be deemed to be the transfer of all or substantially all of the properties or assets of the Company.

(c) Notwithstanding the restrictions described in the foregoing clause (a)(iv), any Restricted Subsidiary may consolidate with, merge into or dispose of all or part of its properties or assets to the Company, the Company may merge into a Restricted Subsidiary for the purpose of reincorporating the Company in another jurisdiction, and any Restricted Subsidiary may consolidate with, merge into or dispose of all or part of its properties or assets to another Restricted Subsidiary.

Section 8.2 Successor Substituted .

Upon any consolidation or merger, or any sale, assignment, transfer, lease, conveyance or other disposition of all or substantially all of the properties or assets of the Company in a transaction that is subject to, and that complies with the provisions of, Section 8.1 of this Indenture, the successor Person formed by such consolidation or into or with which the Company is merged or to which such sale, assignment, transfer, lease, conveyance or other disposition is made shall succeed to, and be substituted for the Company (so that from and after the date of such consolidation, merger, sale, assignment, transfer, lease, conveyance or other disposition, the provisions of this Indenture referring to the “Company” shall refer instead to the successor Person and not to the Company), and may exercise every right and power of the Company under this Indenture with the same effect as if such successor Person had been named as the Company herein; provided , however , that the predecessor Company shall not be relieved from the obligation to pay the principal of and interest on the Notes in the case of a lease of all or substantially all of the Company’s properties or assets in a transaction that is subject to, and that complies with the provisions of, Section 8.1.

SECTION 3.08. Redemption of Notes.

Subject to the limitations set forth in the preamble to ARTICLE 3 of this First Supplemental Indenture, Sections 11.3 and 11.4 of the Original Indenture are hereby amended and restated in their entirety to read as follows:

Section 11.3 Selection by Trustee of Securities to be Redeemed .

(a) If less than all of the Notes are to be redeemed at any time, the Trustee will select the Notes to be redeemed among the Holders of the Notes on a pro rata basis (or, in the case of Global Notes, the Trustee will select the Notes for redemption based on DTC’s method that most nearly approximates a pro rata selection), unless otherwise required by law or applicable securities exchange requirements.

(b) The Trustee shall promptly notify the Company in writing of the Notes selected for redemption and, in the case of any Note selected for partial redemption, the principal amount at maturity thereof to be redeemed. No Notes in amounts of $2,000 or less shall be redeemed in part. Notes and portions of Notes selected shall be in amounts of $2,000 and integral multiples of $1,000 in excess thereof; except that if all of the Notes of a Holder are to be redeemed, the entire Outstanding amount of Notes held by such Holder, even if less than $2,000 and/or a non-multiple of $1,000, shall be redeemed. Except as provided in the preceding sentence, provisions of this Indenture that apply to Notes called for redemption also apply to portions of Notes called for redemption.

Section 11.4 Notice of Redemption .

(a) Subject to Section 11.6, at least 30 days but not more than 60 days before a Redemption Date, the Company shall mail or cause to be mailed, by first class mail, a notice of redemption to each Holder whose Notes are to be redeemed at its registered address; provided , however , that (notwithstanding the foregoing) notices of redemption may be mailed more than 60 days prior to a Redemption Date if such notice is issued in connection with a Legal Defeasance or Covenant Defeasance of the Notes or the satisfaction and discharge of this Indenture.

The notice shall identify the Notes to be redeemed and shall state:

(i) the Redemption Date;

(ii) the Redemption Price, or if not then ascertainable, the manner of calculation thereof;

(iii) if any Note is being redeemed in part, the portion of the principal amount of such Note to be redeemed and that, after the Redemption Date upon surrender of such Note, a new Note or Notes in principal amount equal to the unredeemed portion of the original Note shall be issued in the name of the Holder thereof upon cancellation of the original Note;

(iv) the name and address of the Paying Agent;

(v) that Notes called for redemption must be surrendered to the Paying Agent to collect the Redemption Price and become due on the date fixed for redemption, unless the redemption is subject to a condition precedent that is not satisfied or waived;

(vi) that, unless the Company defaults in making such redemption payment, interest, if any, on Notes called for redemption ceases to accrue on and after the Redemption Date;

(vii) the paragraph of the Notes and/or Section of this Indenture pursuant to which the Notes called for redemption are being redeemed;

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

(ix) any conditions that must be satisfied prior to the Company becoming obligated to consummate such redemption.

(b) At the Company’s request, the Trustee shall give the notice of redemption in the Company’s name and at the Company’s expense; provided , however , that the Company shall have delivered to the Trustee, at least five Business Days prior to mailing of notice of the redemption (or such shorter period of time as may be acceptable to the Trustee), a Company Request that the Trustee give such notice and setting forth the information to be stated in such notice as provided in the preceding paragraph.

SECTION 3.09. Redemption Upon Equity Offering

Subject to the limitations set forth in the preamble to ARTICLE 3 of this First Supplemental Indenture, the last sentence of Section 11.6 of the Original Indenture is hereby amended by adding the following paragraph as the last paragraph of such Section:

Notwithstanding the preceding provisions of this Section 11.6, notice of any redemption upon an Equity Offering may be given prior to the completion of the related Equity Offering, and any such redemption or notice may at the Company’s discretion, be subject to one or more conditions precedent, including, but not limited to completion of the related Equity Offering.

SECTION 3.10. Covenant Defeasance.

Subject to the limitations set forth in the preamble to ARTICLE 3 of this First Supplemental Indenture, the last sentence of Section 13.3 of the Original Indenture is hereby amended and restated in its entirety to read as follows:

In addition, upon the Company’s exercise under Section 13.1 hereof of the option applicable to this Section 13.3, subject to the satisfaction of the conditions set forth in Section 13.4 hereof, the following will no longer constitute an Event of Default: (a) clauses (iii), (iv), (v), (vi) and (vii) of Section 5.1(a) of this Indenture and (b) clauses (ix) and (x) (but only with respect to Subsidiaries of the Company) of Section 5.1(a) of this Indenture.

SECTION 3.11. Subsidiary Guarantees of the Notes.

Subject to the limitations set forth in the preamble to ARTICLE 3 of this First Supplemental Indenture, Article Fourteen of the Original Indenture is hereby amended by adding the following Sections 14.4 and 14.5 thereto:

Section 14.4 Subsidiary Guarantors May Consolidate, etc., on Certain Terms .

A Subsidiary Guarantor may not sell or otherwise dispose of all or substantially all of its properties or assets to, or consolidate with or merge with or into (regardless of whether such Subsidiary Guarantor is the surviving Person) another Person, other than the Company or another Subsidiary Guarantor, unless:

(a) immediately after giving effect to such transaction, no Default or Event of Default exists; and

(b) either:

(i) (A) such Subsidiary Guarantor is the surviving Person or (B) the Person acquiring the properties or assets in any such sale or other disposition or the Person formed by or surviving any such consolidation or merger (if other than such Subsidiary Guarantor) assumes all the obligations of such Subsidiary Guarantor under this Indenture (including its Subsidiary Guarantee), on the terms set forth herein, pursuant to agreements reasonably satisfactory to the Trustee; or

(ii) such transaction does not violate the provisions of this Indenture described in Section 10.11.

In case of any such consolidation, merger, sale or other disposition and upon the assumption by the successor Person, by supplemental indenture, executed and delivered to the Trustee and satisfactory in form to the Trustee, of the Subsidiary Guarantee of such Subsidiary Guarantor and the due and punctual performance of all of the covenants and conditions of this Indenture to be performed by the Subsidiary Guarantor, such successor Person will succeed to and be substituted for the Subsidiary Guarantor with the same effect as if it had been named herein as a Subsidiary Guarantor. Such successor Person thereupon may cause to be signed any or all of the Subsidiary Guarantee notations to be endorsed upon all of the Notes issuable hereunder which theretofore shall not have been signed by such Subsidiary Guarantor and delivered to the Trustee. All the Subsidiary Guarantees so issued will in all respects have the same legal rank and benefit under this Indenture as the Subsidiary Guarantees theretofore and thereafter issued in accordance with the terms of this Indenture as though all of such Subsidiary Guarantees had been issued at the date of the execution hereof.

Section 14.5 Releases .

(a) Each Subsidiary Guarantor will be released and relieved of any obligations under its Subsidiary Guarantee as set forth under Section 10.16(b) of this Indenture, and the Subsidiary Guarantee of a Subsidiary Guarantor will also be released immediately:

(i) upon any sale or other disposition of all or substantially all of the properties or assets of such Subsidiary Guarantor (including by way of merger or consolidation) to a Person that is not (either before or after giving effect to such transaction) the Company or a Restricted Subsidiary, if the sale or other disposition does not violate Section 10.11 of this Indenture;

(ii) upon any sale or other disposition of the Capital Stock of such Subsidiary Guarantor to a Person that is not (either before or after giving effect to such transaction) the Company or a Restricted Subsidiary, if the sale or other disposition does not violate Section 10.11 of this Indenture and such Subsidiary Guarantor no longer qualifies as a Subsidiary of the Company as a result of such disposition;

(iii) upon designation of such Subsidiary Guarantor as an Unrestricted Subsidiary in accordance with Section 10.15 of this Indenture;

(iv) upon Legal Defeasance or Covenant Defeasance in accordance with Article Thirteen of this Indenture or satisfaction and discharge of this Indenture in accordance with Article Four of this Indenture; or

(v) upon the liquidation or dissolution of such Subsidiary Guarantor, provided that no Default or Event of Default occurs as a result thereof or shall have occurred and is continuing.

(b) Upon delivery by the Company to the Trustee of an Officers’ Certificate and an Opinion of Counsel to the effect that all conditions precedent to the release of such Subsidiary Guarantee, as set forth in this Indenture, have been satisfied, the Trustee will execute any documents reasonably required in order to evidence the release of any Subsidiary Guarantor from its obligations under such Subsidiary Guarantee.

(c) Any Subsidiary Guarantor not released from its obligations under its Subsidiary Guarantee as provided in this Section 14.5 will remain liable for the full amount of principal of and interest and premium, if any, on the Notes and for the other obligations of any Subsidiary Guarantor under this Indenture as provided in this Article Fourteen.

ARTICLE 4
Additional Covenants

With respect to the Notes, Article Ten of the Original Indenture is hereby amended as set forth below in this ARTICLE 4; provided , however , that each such amendment shall apply only to the Notes and not to any other series of Securities issued under the Indenture.

SECTION 4.01. Reports.

Subject to the limitations set forth in the preamble to ARTICLE 4 of this First Supplemental Indenture, Article Ten of the Original Indenture is hereby amended by adding the following Section 10.6 thereto:

Section 10.6 Reports .

(a) Regardless of whether required by the rules and regulations of the SEC, so long as any Notes are Outstanding, the Company will file with the SEC for public availability, within the time periods specified in the SEC’s rules and regulations (unless the SEC will not accept such a filing, in which case the Company will comply with the requirements described in Section 10.6(b)):

(i) all quarterly and annual reports that would be required to be filed with the SEC on Forms 10-Q and 10-K under the Exchange Act if the Company were required to file such reports; and

(ii) all current reports that would be required to be filed with the SEC on Form 8-K under the Exchange Act if the Company were required to file such reports.

All such reports will be prepared in all material respects in accordance with all of the rules and regulations applicable to such reports. Each annual report on Form 10-K will include a report on the Company’s consolidated financial statements by the Company’s certified independent accountants.

(b) If, at any time, the Company is no longer subject to the periodic reporting requirements of the Exchange Act for any reason, the Company will nevertheless continue filing the reports specified in Section 10.6(a) with the SEC within the time periods specified in Section 10.6(a) unless the SEC will not accept such a filing. The Company will not take any action for the purpose of causing the SEC not to accept any such filings. If, notwithstanding the foregoing, the SEC will not accept the Company’s filings for any reason, the Company will post the reports referred to in Section 10.6(a) on its website within the time periods that would apply if the Company were required to file those reports with the SEC.

(c) If the Company has designated any of its Subsidiaries as Unrestricted Subsidiaries, then the quarterly and annual financial information required by Section 10.6(a) and Section 10.6(b) will include a reasonably detailed presentation, either on the face of the financial statements or in the footnotes thereto, and in “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” of the financial condition and results of operations of the Company and its Restricted Subsidiaries separate from the financial condition and results of operations of the Unrestricted Subsidiaries.

(d) In addition, the Company agrees that, for so long as any Notes remain Outstanding, if at any time it is not required to file with the SEC the reports required by Section 10.6(a), it will furnish to the Holders of Notes and to securities analysts and prospective investors, upon their request, the information required to be delivered pursuant to Rule 144A(d)(4) under the Securities Act.

SECTION 4.02. Taxes.

Subject to the limitations set forth in the preamble to ARTICLE 4 of this First Supplemental Indenture, Article Ten of the Original Indenture is hereby further amended by adding the following Section 10.7 thereto:

Section 10.7 Taxes .

The Company shall pay, and shall cause each of its Subsidiaries to pay, prior to delinquency, any taxes, assessments, and governmental levies except such as are contested in good faith and by appropriate proceedings or where the failure to effect such payment is not adverse in any material respect to the Holders of the Notes.

SECTION 4.03. Restricted Payments.

Section 10.8 Restricted Payments .

(a) The Company will not, and will not permit any of its Restricted Subsidiaries to, directly or indirectly:

(1) declare or pay any dividend or make any other payment or distribution on account of the Company’s or any of its Restricted Subsidiaries’ Equity Interests (including, without limitation, any payment in connection with any merger or consolidation involving the Company or any of its Restricted Subsidiaries) or to the direct or indirect holders of the Company’s or any of its Restricted Subsidiaries’ Equity Interests in their capacity as such (other than dividends or distributions payable in Equity Interests (other than Disqualified Stock) of the Company and other than dividends or distributions payable to the Company or any Restricted Subsidiary);

(2) purchase, redeem or otherwise acquire or retire for value (including, without limitation, any such purchase, redemption, acquisition or retirement made in connection with any merger or consolidation involving the Company) any Equity Interests of the Company or any direct or indirect parent company of the Company;

(3) make any payment on or with respect to, or purchase, redeem, defease or otherwise acquire or retire for value any Subordinated Debt, except a payment of interest or principal at the Stated Maturity thereof (excluding (a) any intercompany Indebtedness between or among the Company and any of its Restricted Subsidiaries or (b) the purchase or other acquisition of Subordinated Debt acquired in anticipation of satisfying a sinking fund obligation, principal installment or final maturity, in each case due within one year of the date of such purchase or other acquisition); or

(4) make any Restricted Investment;

(all such payments and other actions set forth in clauses (1) through (4) above being collectively referred to as “ Restricted Payments ”), unless, at the time of and after giving effect to such Restricted Payment:

(i) no Default or Event of Default has occurred and is continuing or would occur as a consequence of such Restricted Payment;

(ii) the Company would, at the time of such Restricted Payment and after giving pro forma effect thereto as if such Restricted Payment had been made at the beginning of the applicable four-quarter period, have been permitted to incur at least $1.00 of additional Indebtedness pursuant to the Fixed Charge Coverage Ratio test set forth in Section 10.10(a) of this Indenture; and

(iii) such Restricted Payment, together with the aggregate amount of all other Restricted Payments made by the Company and its Restricted Subsidiaries since the Issue Date (excluding Restricted Payments permitted by clauses (ii), (iii), (iv), (v), (vi), (vii), (viii), (ix) and (xii) of Section 10.8(b) of this Indenture), is equal to or less than the sum, without duplication, of:

(A) 50% of the Consolidated Net Income of the Company for the period (taken as one accounting period) from the beginning of the most recent fiscal quarter commencing before the Issue Date to the end of the Company’s most recently ended fiscal quarter for which internal financial statements are available at the time of such Restricted Payment (or, if such Consolidated Net Income for such period is a deficit, less 100% of such deficit); plus

(B) 100% of (1)(a) the aggregate net cash proceeds and (b) the Fair Market Value of (i) marketable securities (other than marketable securities of the Company or an Affiliate of the Company), (ii) Capital Stock of a Person (other than the Company or an Affiliate of the Company) engaged primarily in any Related Business and (iii) other assets used or useful in any Related Business, in each case received by the Company since the Issue Date as a contribution to its common equity capital or from the issue or sale of Equity Interests of the Company (other than Disqualified Stock) or from the issue or sale of convertible or exchangeable Disqualified Stock or convertible or exchangeable debt securities of the Company that have been converted into or exchanged for such Equity Interests (other than Equity Interests (or Disqualified Stock or debt securities) sold to a Subsidiary of the Company), (2) with respect to Indebtedness that is incurred on or after the Issue Date, the amount by which such Indebtedness of the Company or any of its Restricted Subsidiaries is reduced on the Company’s consolidated balance sheet upon the conversion or exchange after the Issue Date of any such Indebtedness into or for Equity Interests of the Company (other than Disqualified

Stock), and (3) the aggregate net cash proceeds, if any, received by the Company or any of its Restricted Subsidiaries upon any conversion or exchange described in clause (1) or (2) above; plus

(C) with respect to Restricted Investments made by the Company and its Restricted Subsidiaries after the Issue Date, an amount equal to the sum, without duplication, of (1) the net reduction in such Restricted Investments in any Person resulting from (a) repayments of loans or advances, or other transfers of assets, in each case to the Company or any Restricted Subsidiary, (b) other repurchases, repayments or redemptions of such Restricted Investments, (c) the sale of any such Restricted Investment to a purchaser other than the Company or a Subsidiary of the Company or (d) the release of any Guarantee (except to the extent any amounts are paid under such Guarantee) that constituted a Restricted Investment plus (2) with respect to any Unrestricted Subsidiary designated as such after the Issue Date that is redesignated as a Restricted Subsidiary after the Issue Date, the lesser of (a) the Fair Market Value of the Company’s Investment in such Subsidiary held by the Company or any of its Restricted Subsidiaries at the time of such redesignation and (b) the aggregate amount of Investments made by the Company or any of its Restricted Subsidiaries in such Subsidiary upon or after the designation of such Subsidiary as an Unrestricted Subsidiary and prior to the redesignation of such Subsidiary as a Restricted Subsidiary; plus

(D) 100% of any dividends received by the Company or a Restricted Subsidiary after the Issue Date from an Unrestricted Subsidiary, to the extent such dividends were not otherwise included in the Consolidated Net Income of the Company for such period.

(b) Section 10.8(a) of this Indenture will not prohibit:

(i) the payment of any dividend or the consummation of any irrevocable redemption within 60 days after the date of declaration of the dividend or giving of the redemption notice, as the case may be, if at the date of declaration or notice, the dividend or redemption payment would have complied with the provisions of this Indenture;

(ii) the making of any Restricted Payment in exchange for, or out of the net cash proceeds from the substantially concurrent sale (other than to a Subsidiary of the Company) of, Equity Interests of the Company (other than Disqualified Stock and other than Equity Interests issued or sold to an employee stock ownership plan, option plan or similar trust to the extent such sale to an employee stock ownership plan, option plan or similar trust is financed by loans from or Guaranteed by the Company or any of its Restricted Subsidiaries unless such loans have been repaid with cash on or prior to the date of determination) or from the substantially concurrent contribution of common equity capital to the Company; provided that the amount of any such net cash proceeds that are

utilized for any such Restricted Payment will be excluded from clause (iii)(B) of Section 10.8(a) and clause (vii) of this Section 10.8 (b);

(iii) the purchase, redemption, defeasance or other acquisition or retirement for value of Subordinated Debt (including the payment of any required premium and any fees and expenses incurred in connection with such purchase, redemption, defeasance or other acquisition or retirement) with the net cash proceeds from a substantially concurrent incurrence of Permitted Refinancing Indebtedness;

(iv) the purchase, redemption or other acquisition or retirement for value of any Equity Interests of the Company or any Restricted Subsidiary held by any of the Company’s or any of its Restricted Subsidiaries’ current or former directors or employees in connection with the exercise or vesting of any equity compensation (including, without limitation, stock options, restricted stock and phantom stock) in order to satisfy the Company’s or such Restricted Subsidiary’s tax withholding obligation with respect to such exercise or vesting;

(v) purchases of Capital Stock deemed to occur upon the exercise of stock options if such Capital Stock represents a portion of the exercise price thereof;

(vi) payments to fund the purchase, redemption or other acquisition or retirement for value by the Company of fractional Equity Interests arising out of stock dividends, splits or combinations, business combinations or other transactions permitted by this Indenture;

(vii) as long as no Default has occurred and is continuing or would be caused thereby, the purchase, redemption or other acquisition or retirement for value of any Equity Interests of the Company or any Restricted Subsidiary held by any of the Company’s or any of its Restricted Subsidiaries’ current or former directors or employees; provided that the aggregate price paid for all such purchased, redeemed, acquired or retired Equity Interests may not exceed the sum of (A) $20.0 million, plus (B) the aggregate amount of cash proceeds received by the Company from the sale of the Company’s Equity Interests (other than Disqualified Stock) to any such directors or employees that occurs after the Issue Date; provided that the amount of such cash proceeds utilized for any such purchase, redemption or other acquisition or retirement will be excluded from clause (iii)(B) of Section 10.8(a) and clause (ii) of this Section 10.8(b) plus (C) the cash proceeds of key man life insurance policies received by the Company and its Restricted Subsidiaries after the Issue Date;

(viii) as long as no Default has occurred and is continuing or would be caused thereby, the declaration and payment of regularly scheduled or accrued dividends to holders of any class or series of Disqualified Stock of the Company or any class or series of preferred stock of any Restricted Subsidiary issued on or

after the Issue Date in accordance with the Fixed Charge Coverage Ratio test set forth in Section 10.10(a);

(ix) the payment of any dividend (or, in the case of any partnership or limited liability company, any similar distribution) by a Restricted Subsidiary to the holders of Equity Interests (other than Disqualified Stock) of such Restricted Subsidiary; provided that such dividend or similar distribution is paid to all holders of such Equity Interests on a pro rata basis based on their respective holdings of such Equity Interests;

(x) purchases of Subordinated Debt at a purchase price not greater than (A) 101% of the principal amount of such Subordinated Debt and accrued and unpaid interest thereon in the event of a Change of Control or (B) 100% of the principal amount of such Subordinated Debt and accrued and unpaid interest thereon in the event of an Asset Sale in connection with any change of control offer or asset sale offer required by the terms of such Subordinated Debt, but only if:

(1) in the case of a Change of Control, the Company has first complied with and fully satisfied its obligations under Section 10.14; or

(2) in the case of an Asset Sale, the Company has complied with and fully satisfied its obligations under Section 10.11;

(xi) payments or distributions to dissenting stockholders pursuant to applicable law in connection with a merger, consolidation or transfer of all or substantially all of the assets of the Company that complies with Article Eight of this Indenture; and

(xii) other Restricted Payments in an aggregate amount at any time outstanding not to exceed $25.0 million.

(c) The amount of all Restricted Payments (other than cash) shall be the Fair Market Value, on the date of such Restricted Payment, of the Restricted Investment proposed to be made or the asset(s) or securities proposed to be paid, transferred or issued by the Company or such Restricted Subsidiary, as the case may be, pursuant to such Restricted Payment.

(d) The Fair Market Value of any cash Restricted Payment shall be its face amount, and the Fair Market Value of any non-cash Restricted Payment shall be determined in accordance with the definition of that term. For purposes of determining compliance with this Section 10.8, in the event that a Restricted Payment meets the criteria of more than one of the exceptions described in clauses (i) through (xii) of Section 10.8(b) or is entitled to be made pursuant to Section 10.8(a), the Company shall, in its sole discretion, classify such Restricted Payment, or later classify, reclassify or re-divide all or a portion of such Restricted Payment, in any manner that complies with this Section 10.8.

SECTION 4.04. Dividend and Other Payment Restrictions Affecting Restricted Subsidiaries.

Section 10.9 Dividend and Other Payment Restrictions Affecting Restricted Subsidiaries .

(a) The Company will not, and will not permit any of its Restricted Subsidiaries to, directly or indirectly, create or permit to exist or become effective any consensual encumbrance or restriction on the ability of any Restricted Subsidiary to:

(i) pay dividends or make any other distributions on its Capital Stock to the Company or any of its Restricted Subsidiaries, or pay any Indebtedness owed to the Company or any of its Restricted Subsidiaries;

(ii) make loans or advances to the Company or any of its Restricted Subsidiaries; or

(iii) sell, lease or transfer any of its properties or assets to the Company or any of its Restricted Subsidiaries.

(b) However, the preceding restrictions in Section 10.9(a) will not apply to encumbrances or restrictions existing under, by reason of or with respect to:

(i) the Senior Credit Agreement, any Existing Indebtedness, Capital Stock or any other agreements or instruments, in each case, in effect on the Issue Date and any amendments, restatements, modifications, renewals, extensions, supplements, increases, refundings, replacements or refinancings thereof; provided that the encumbrances and restrictions in any such amendments, restatements, modifications, renewals, extensions, supplements, increases, refundings, replacements or refinancings are, in the reasonable good faith judgment of the Chief Executive Officer and the Chief Financial Officer of the Company, no more restrictive, taken as a whole, than those contained in the applicable agreements or instruments as in effect on the Issue Date;

(ii) this Indenture, the Notes and the Subsidiary Guarantees;

(iii) applicable law, rule, regulation, order, approval, permit or similar restriction;

(iv) any instrument governing Indebtedness or Capital Stock of a Person acquired by the Company or any of its Restricted Subsidiaries as in effect at the time of such acquisition (except to the extent such Indebtedness or Capital Stock was incurred in connection with or in contemplation of such acquisition), which encumbrance or restriction is not applicable to any Person, or the properties

or assets of any Person, other than the Person, or the property or assets of the Person, so acquired and any amendments, restatements, modifications, renewals, extensions, supplements, increases, refundings, replacements or refinancings thereof; provided , that the encumbrances and restrictions in any such amendments, restatements, modifications, renewals, extensions, supplements, increases, refundings, replacements or refinancings are, in the reasonable good faith judgment of the Chief Executive Officer and the Chief Financial Officer of the Company, no more restrictive, taken as a whole, than those in effect on the date of the acquisition; provided , further , that, in the case of Indebtedness, such Indebtedness was permitted by the terms of this Indenture to be incurred;

(v) customary non-assignment provisions in contracts, leases and licenses (including, without limitation, licenses of intellectual property) entered into in the ordinary course of business;

(vi) any agreement for the sale or other disposition of the Equity Interests in, or all or substantially all of the properties or assets of, a Restricted Subsidiary, that restricts distributions by the applicable Restricted Subsidiary pending the sale or other disposition;

(vii) Permitted Refinancing Indebtedness; provided that the restrictions contained in the agreements governing such Permitted Refinancing Indebtedness are not materially more restrictive, taken as a whole, than those contained in the agreements governing the Indebtedness being refinanced;

(viii) Liens permitted to be incurred under the provisions of Section 10.13 that limit the right of the debtor to dispose of the assets subject to such Liens;

(ix) the issuance of preferred stock by a Restricted Subsidiary or the payment of dividends thereon in accordance with the terms thereof; provided that issuance of such preferred stock is permitted pursuant to Section 10.10 and the terms of such preferred stock do not expressly restrict the ability of a Restricted Subsidiary to pay dividends or make any other distributions on its Capital Stock (other than requirements to pay dividends or liquidation preferences on such preferred stock prior to paying any dividends or making any other distributions on such other Capital Stock);

(x) other Indebtedness of the Company or any of its Restricted Subsidiaries permitted to be incurred pursuant to an agreement entered into subsequent to the Issue Date in accordance with Section 10.10; provided that the provisions relating to such encumbrance or restriction contained in such Indebtedness are not materially less favorable to the Company and its Restricted Subsidiaries, taken as a whole, in the reasonable good faith judgment of the Chief Executive Officer and Chief Financial Officer of the Company, than the provisions contained in the Senior Credit Agreement as in effect on the Issue Date;

(xi) Indebtedness incurred or Capital Stock issued by any Restricted Subsidiary, provided that the restrictions contained in the agreements or instruments governing such Indebtedness or Capital Stock (A) apply only in the event of a payment default or a default with respect to a financial covenant in such agreement or instrument or (B) will not materially affect the Company’s ability to pay all principal, interest and premium, if any, on the Notes, in the reasonable good faith judgment of the Chief Executive Officer and Chief Financial Officer of the Company;

(xii) customary provisions restricting subletting or assignment of any lease governing a leasehold interest;

(xiii) Hedging Obligations permitted from time to time under this Indenture;

(xiv) restrictions on cash or other deposits or net worth imposed by customers under contracts entered into in the ordinary course of business; and

(xv) with respect only to encumbrances or restrictions of the type referred to in clause (iii) of Section 10.9(a):

(A) customary nonassignment provisions (including provisions forbidding subletting) in leases governing leasehold interests or Farm-In Agreements or Farm-Out Agreements relating to leasehold interests in oil and gas properties to the extent such provisions restrict the transfer of the lease, the property leased thereunder or the other interests therein;

(B) provisions limiting the disposition or distribution of assets or property in, or transfer of Capital Stock of, joint venture agreements, asset sale agreements, sale-leaseback agreements, stock sale agreements and other similar agreements entered into (1) in the ordinary course of business, or (2) with the approval of the Company’s Board of Directors, which limitations are applicable only to the assets, property or Capital Stock that are the subject of such agreements; and

(C) Capital Lease Obligations, security agreements, mortgages, purchase money agreements or similar instruments to the extent such encumbrance or restriction restricts the transfer of the property (including Capital Stock) subject to such Capital Lease Obligations, security agreements, mortgages, purchase money agreements or similar instruments.

SECTION 4.05. Incurrence of Indebtedness and Issuance of Preferred Stock.

Section 10.10 Incurrence of Indebtedness and Issuance of Preferred Stock .

(a) The Company will not, and will not permit any of its Restricted Subsidiaries to, directly or indirectly create, incur, issue, assume, Guarantee or otherwise become directly or indirectly liable, contingently or otherwise, with respect to (collectively, “ incur ;” with “ incurrence ” having a correlative meaning) any Indebtedness (including Acquired Debt), and the Company will not issue any Disqualified Stock and will not permit any of its Restricted Subsidiaries to issue any preferred stock; provided , however , that the Company may incur Indebtedness (including Acquired Debt) and issue Disqualified Stock, and Subsidiary Guarantors may incur Indebtedness (including Acquired Debt) and issue preferred stock, if (i) the Fixed Charge Coverage Ratio for the Company’s most recently ended four full fiscal quarters for which internal financial statements are available immediately preceding the date on which such additional Indebtedness is incurred or such Disqualified Stock or preferred stock is issued, as the case may be, would have been at least 2.25 to 1.0, determined on a pro forma basis (including a pro forma application of the net proceeds therefrom), as if the additional Indebtedness had been incurred or the Disqualified Stock or preferred stock had been issued, as the case may be, at the beginning of such four-quarter period and (ii) no Default would occur as a consequence of, and no Event of Default would be continuing following, the incurrence of the Indebtedness or the transactions relating to such incurrence, including any related application of the proceeds thereof.

(b) Notwithstanding the foregoing, Section 10.10(a) will not prohibit the incurrence of any of the following items of Indebtedness or the issuance of any Disqualified Stock or preferred stock described in clauses (v) and (vii) of this Section 10.10(b) (collectively, “ Permitted Debt ”):

(i) the incurrence by the Company and any Subsidiary Guarantor of Indebtedness under Credit Facilities in an aggregate principal amount at any one time outstanding under this clause (i) (with letters of credit being deemed to have a principal amount equal to the maximum potential liability of the Company and its Restricted Subsidiaries thereunder) not to exceed the greater of (A) $200.0 million and (B) the sum of $100.0 million plus an amount equal to 25.0% of Adjusted Consolidated Net Tangible Assets of the Company, determined as of the date of the incurrence of such Indebtedness after giving pro forma effect to such incurrence and the application of the proceeds therefrom;

(ii) the incurrence by the Company and its Restricted Subsidiaries of Existing Indebtedness;

(iii) the incurrence by the Company of Indebtedness represented by the Notes to be issued on the Issue Date and the Exchange Notes to be issued pursuant to the Registration Rights Agreement;

(iv) the incurrence by the Company or any of its Restricted Subsidiaries of Indebtedness represented by Capital Lease Obligations, mortgage financings or purchase money obligations, in each case, incurred for the purpose

of financing all or any part of the purchase price or cost of design, construction, installation, improvement, deployment, refurbishment or modification of property, plant or equipment or furniture, fixtures and equipment, in each case, used in the business of the Company or any of its Restricted Subsidiaries, in an aggregate principal amount at any time outstanding, including all Permitted Refinancing Indebtedness incurred to extend, renew, refund, refinance, replace, defease, discharge or otherwise retire for value any Indebtedness incurred pursuant to this clause (iv), not to exceed the greater of (A) $15.0 million and (B) 2.0% of Adjusted Consolidated Net Tangible Assets of the Company, determined as of the date of the incurrence of such Indebtedness;

(v) the incurrence or issuance by the Company or any of its Restricted Subsidiaries of Permitted Refinancing Indebtedness in exchange for, or the net proceeds of which are used to extend, renew, refund, refinance, replace, defease, discharge or otherwise retire for value any Indebtedness (other than intercompany Indebtedness) or Disqualified Stock of the Company, or Indebtedness (other than intercompany Indebtedness) or preferred stock of any Restricted Subsidiary, in each case that was permitted by this Indenture to be incurred or issued under Section 10.10(a) or clause (ii), (iii), (iv), (v), (x), (xiv) or (xv) of this Section 10.10(b);

(vi) the incurrence by the Company or any of its Restricted Subsidiaries of intercompany Indebtedness between or among the Company and any of its Restricted Subsidiaries; provided , however , that (A) if the Company or any Subsidiary Guarantor is the obligor on such Indebtedness and the payee is not the Company or a Subsidiary Guarantor, such Indebtedness must be expressly subordinated to the prior payment in full in cash of all obligations then due with respect to the Notes, in the case of the Company, or the Subsidiary Guarantee, in the case of a Subsidiary Guarantor; and (B)(1) any subsequent issuance or transfer of Equity Interests that results in any such Indebtedness being held by a Person other than the Company or a Restricted Subsidiary and (2) any sale or other transfer of any such Indebtedness to a Person that is not either the Company or a Restricted Subsidiary will be deemed, in each case, to constitute an incurrence of such Indebtedness by the Company or such Restricted Subsidiary, as the case may be, that was not permitted by this clause (vi);

(vii) the issuance by any of the Company’s Restricted Subsidiaries to the Company or to any of its Restricted Subsidiaries of any preferred stock; provided , however , that:

(A) any subsequent issuance or transfer of Equity Interests that results in any such preferred stock being held by a Person other than the Company or a Restricted Subsidiary; and

(B) any sale or other transfer of any such preferred stock to a Person that is not either the Company or a Restricted Subsidiary,

will be deemed, in each case, to constitute an issuance of such preferred stock by such Restricted Subsidiary that was not permitted by this clause (vii);

(viii) the incurrence of obligations of the Company or a Restricted Subsidiary pursuant to Interest Rate and Currency Hedges, in each case entered into in the ordinary course of business for the non-speculative purpose of limiting risks that arise in the ordinary course of business of the Company and its Restricted Subsidiaries;

(ix) the Guarantee by the Company or any of the Subsidiary Guarantors of Indebtedness of the Company or a Restricted Subsidiary that was permitted to be incurred by another provision of this Section 10.10; provided that if the Indebtedness being Guaranteed is subordinated to or pari passu with the Notes, then the Guarantee shall be subordinated or pari passu , as applicable, to the same extent as the Indebtedness Guaranteed;

(x) the incurrence by the Company or any Restricted Subsidiary of Permitted Acquisition Indebtedness;

(xi) the incurrence by the Company or any Restricted Subsidiary of Indebtedness arising from the honoring by a bank or other financial institution of a check, draft or similar instrument inadvertently drawn against insufficient funds, so long as such Indebtedness is covered within five Business Days;

(xii) the incurrence by the Company or any Restricted Subsidiary of Indebtedness consisting of the financing of insurance premiums in customary amounts consistent with the operations and business of the Company and its Restricted Subsidiaries;

(xiii) the incurrence by the Company or any Restricted Subsidiary of Indebtedness constituting reimbursement obligations with respect to letters of credit; provided that, upon the drawing of such letters of credit, such obligations are reimbursed within 30 days following such drawing;

(xiv) the incurrence by any Foreign Subsidiary of Indebtedness that, in the aggregate together with all other Indebtedness of all Foreign Subsidiaries (including all Permitted Refinancing Indebtedness incurred to extend, renew, refund, refinance, replace, defease, discharge or otherwise retire for value any Indebtedness incurred pursuant to this clause (xiv)), does not exceed the greater of (A) 20.0% of the Adjusted Consolidated Net Tangible Assets of all Foreign Subsidiaries, considered as a consolidated enterprise, determined as of the date of the incurrence of such Indebtedness after giving pro forma effect to such incurrence and the application of the proceeds therefrom and (B) $25.0 million; and

(xv) the incurrence by the Company or any of the Subsidiary Guarantors of Indebtedness in an aggregate principal amount that, when taken together with all other Indebtedness of the Company and its Restricted

Subsidiaries outstanding on the date of such incurrence (other than Indebtedness permitted by clauses (i) through (xiv) above or Section 10.10(a)) and any Permitted Refinancing Indebtedness incurred to extend, renew, refund, refinance, replace, defease, discharge or otherwise retire for value any Indebtedness incurred pursuant to this clause (xv) does not exceed the greater of (A) 5.0% of Adjusted Consolidated Net Tangible Assets of the Company, determined as of the date of the incurrence of such Indebtedness after giving pro forma effect to such incurrence and the application of the proceeds therefrom and (B) $35.0 million.

(c) The Company will not incur, and will not permit any Subsidiary Guarantor to incur, any Indebtedness (including Permitted Debt) that is contractually subordinated in right of payment to any other Indebtedness of the Company or such Subsidiary Guarantor unless such Indebtedness is also contractually subordinated in right of payment to the Notes and the applicable Subsidiary Guarantee, on substantially identical terms; provided , however , that no Indebtedness will be deemed to be contractually subordinated in right of payment to any other Indebtedness of the Company solely by virtue of being unsecured or by virtue of being secured on a first or junior Lien basis.

(d) For purposes of determining compliance with this Section 10.10, (i) in the event that an item of proposed Indebtedness, Disqualified Stock or preferred stock meets the criteria of more than one of the categories of Permitted Debt described in clauses (i) through (xv) of Section 10.10(b), or is entitled to be incurred or issued pursuant to Section 10.10(a), the Company will be permitted to divide and classify such item on the date of its incurrence or issuance, or later divide and reclassify all or a portion of such item, in any manner that complies with this Section 10.10 and (ii) all Indebtedness outstanding on the Issue Date under the Senior Credit Agreement shall be deemed incurred on the Issue Date under clause (i) of Section 10.10(b). The accrual of interest, the accretion or amortization of original issue discount, the payment of interest on any Indebtedness in the form of additional Indebtedness with the same terms, the reclassification of preferred stock as Indebtedness due to a change in accounting principles, and the payment of dividends on Disqualified Stock or preferred stock in the form of additional Disqualified Stock or preferred stock of the same class will be deemed not to be an incurrence of Indebtedness or an issuance of Disqualified Stock or preferred stock for purposes of this Section 10.10; provided , in each such case, that the amount of any such accrual, accretion or payment is included in Fixed Charges of the Company as accrued.

(e) For purposes of determining compliance with any U.S. dollar-denominated restriction on the incurrence of Indebtedness, the U.S. dollar-equivalent principal amount of Indebtedness denominated in a foreign currency shall be calculated based on the relevant currency exchange rate in effect on the date such Indebtedness was incurred, in the case of term Indebtedness, or first committed, in the case of revolving credit Indebtedness; provided that if such Indebtedness is incurred to refinance other Indebtedness denominated in a foreign currency, and such refinancing would cause the applicable U.S. dollar-denominated restriction to be exceeded if calculated at the relevant currency exchange rate in effect on the date of such refinancing, such U.S. dollar-denominated restriction shall be deemed not to have been exceeded so long as the

principal amount of such refinancing Indebtedness does not exceed the principal amount of such Indebtedness being refinanced. Notwithstanding any other provision of this Section 10.10, the maximum amount of Indebtedness that the Company or any Restricted Subsidiary may incur pursuant to this Section 10.10 shall not be deemed to be exceeded solely as a result of fluctuations in the exchange rate of currencies. The principal amount of any Permitted Refinancing Indebtedness incurred to refinance other Indebtedness, if incurred in a different currency from the Indebtedness being refinanced, shall be calculated based on the currency exchange rate applicable to the currencies in which such Permitted Refinancing Indebtedness is denominated that is in effect on the date of such refinancing.

SECTION 4.06. Asset Sales.

Section 10.11 Asset Sales .

(a) The Company will not, and will not permit any of its Restricted Subsidiaries to, consummate an Asset Sale unless:

(i) the Company (or the Restricted Subsidiary, as the case may be) receives consideration at the time of such Asset Sale at least equal to the Fair Market Value of the assets or Equity Interests issued or sold or otherwise disposed of; and

(ii) at least 75% of the aggregate consideration received in respect of such Asset Sale by the Company or such Restricted Subsidiary (considered together on a cumulative basis, with all consideration received by the Company or any of its Restricted Subsidiaries in respect of other Asset Sales consummated since the Issue Date), is in the form of cash or Cash Equivalents. For purposes of this provision, each of the following will be deemed to be cash:

(A) any liabilities, as shown on the Company’s most recent consolidated balance sheet, of the Company or any Restricted Subsidiary (other than contingent liabilities, Subordinated Debt and any obligations in respect of preferred stock) that are assumed by the transferee of any such assets or Equity Interests pursuant to a customary novation agreement (or other legal documentation with the same effect) that includes a full release of the Company or such Restricted Subsidiary from any and all liability therefor;

(B) any securities, notes or other obligations received by the Company or any such Restricted Subsidiary from such transferee that are converted by the Company or such Restricted Subsidiary into cash within 90 days after the date of the Asset Sale, to the extent of the cash received in that conversion; and

(b) Notwithstanding the foregoing, the 75% limitation referred to above in Section 10.11(a) shall be deemed satisfied with respect to any Asset Sale in which the cash or Cash Equivalents portion of the consideration received therefrom, determined in accordance with Section 10.11(a) on an after-tax basis, is equal to or greater than what the after-tax proceeds would have been had such Asset Sale complied with the aforementioned 75% limitation.

(c) Within 365 days after the receipt of any Net Proceeds from an Asset Sale or, if the Company has entered into a binding commitment or commitments with respect to any of the actions described in clauses (ii) or (iii) below, within the later of (x) 365 days after the receipt of any Net Proceeds from an Asset Sale or (y) 120 days after the entering into of such commitment or commitments, the Company (or the applicable Restricted Subsidiary, as the case may be) may apply such Net Proceeds:

(i) to permanently repay Senior Debt;

(ii) to invest in Additional Assets; or

(iii) to make capital expenditures in respect of a Related Business of the Company or any of its Restricted Subsidiaries.

However, pending application or investment of such Net Proceeds as provided in clauses (i) through (iii) above, such Net Proceeds may be applied to temporarily reduce revolving credit Indebtedness. An amount equal to any Net Proceeds from Asset Sales that are not applied or invested as provided in clauses (i) through (iii) above will constitute “ Excess Proceeds .”

(d) Within ten Business Days after the aggregate amount of Excess Proceeds exceeds $20.0 million, the Company will make an offer (an “ Asset Sale Offer ”) to all Holders of Notes and all holders of other Indebtedness that is pari passu with the Notes containing provisions similar to those set forth in this Indenture with respect to offers to purchase or redeem with the proceeds of sales of assets, to purchase the maximum principal amount of Notes and such other pari passu Indebtedness that may be purchased out of the Excess Proceeds. The offer price in any Asset Sale Offer will be equal to 100% of the principal amount plus accrued and unpaid interest, if any, to the date of purchase, and will be payable in cash. If any Excess Proceeds remain after consummation of an Asset Sale Offer, the Company or any Restricted Subsidiary may use those Excess Proceeds for any purpose not otherwise prohibited by this Indenture. If the aggregate principal amount of Notes and other pari passu Indebtedness tendered into such Asset Sale Offer exceeds the amount of Excess Proceeds, the Company will use the Excess Proceeds to purchase the Notes and such other pari passu Indebtedness on a pro rata basis. Upon completion of each Asset Sale Offer, the amount of Excess Proceeds will be reset at zero.

(e) Notwithstanding the foregoing, the sale, conveyance or other disposition of all or substantially all of the properties or assets of the Company and its Restricted Subsidiaries, taken as a whole, will be governed by Sections 8.1 and/or 10.14 of this Indenture, as applicable, and not by this Section 10.11.

(f) The Company will comply with the requirements of Rule 14e-1 under the Exchange Act and any other securities laws and regulations thereunder to the extent those laws and regulations are applicable in connection with each repurchase of Notes pursuant to an Asset Sale Offer. To the extent that the provisions of any securities laws or regulations conflict with the Asset Sales provisions of this Indenture, or compliance with the Asset Sales provisions of this Indenture would constitute a violation of any such laws or regulations, the Company will comply with the applicable securities laws and regulations and will not be deemed to have breached its obligations under the Asset Sales provisions of this Indenture by virtue of such compliance.

(g) In the event that, pursuant to this Section 10.11, the Company is required to commence an Asset Sale Offer, it will follow the procedures specified below:

(i) The Asset Sale Offer shall be made to all Holders and all holders of other Indebtedness that is pari passu with the Notes containing provisions similar to those set forth in the Indenture with respect to offers to purchase or redeem with the proceeds of sales of assets. The Asset Sale Offer will remain open for a period of at least 20 Business Days following its commencement and not more than 30 Business Days, except to the extent that a longer period is required by applicable law (the “ Offer Period ”). No later than three Business Days after the termination of the Offer Period (the “ Purchase Date ”), the Company will apply all Excess Proceeds (the “ Offer Amount ”) to the purchase of Notes and such other pari passu Indebtedness (on a pro rata basis, if applicable) or, if less than the Offer Amount has been tendered, all Notes and other Indebtedness tendered in response to the Asset Sale Offer. Payment for any Notes so purchased will be made in the same manner as interest payments are made.

(ii) If the Purchase Date is on or after an interest record date and on or before the related Interest Payment Date, any accrued and unpaid interest will be paid to the Person in whose name a Note is registered at the close of business on such record date, and no additional interest will be payable to Holders who tender Notes pursuant to the Asset Sale Offer.

(iii) Upon the commencement of an Asset Sale Offer, the Company will send, by first class mail, a notice to the Trustee and each of the Holders. The notice will contain all instructions and materials necessary to enable such Holders to tender Notes pursuant to the Asset Sale Offer. The notice, which will govern the terms of the Asset Sale Offer, will state:

(A) that the Asset Sale Offer is being made pursuant to this Section 10.11 and the length of time the Asset Sale Offer will remain open;

(B) the Offer Amount, the purchase price and the Purchase Date;

(D) that, unless the Company defaults in making such payment, any Note accepted for payment pursuant to the Asset Sale Offer will cease to accrue interest after the Purchase Date;

(E) that Holders electing to have a Note purchased pursuant to an Asset Sale Offer may elect to have Notes purchased in denominations of $2,000 and integral multiples of $1,000 in excess of $2,000 only;

(F) that Holders electing to have Notes purchased pursuant to any Asset Sale Offer will be required to surrender the Notes, with the form entitled “Option of Holder to Elect Purchase” attached to the Notes completed, or transfer by book-entry transfer, to the Company, a depositary, if appointed by the Company, or a Paying Agent at the address specified in the notice prior to the close of business on the third Business Day preceding the Purchase Date;

(G) that Holders will be entitled to withdraw their election if the Company, the depositary or the Paying Agent, as the case may be, receives, not later than the expiration of the Offer Period, a telegram, telex, facsimile transmission or letter setting forth the name of the Holder, the principal amount of the Note the Holder delivered for purchase and a statement that such Holder is withdrawing his election to have such Note purchased;

(H) that, if the aggregate principal amount of Notes and other pari passu Indebtedness surrendered by Holders thereof exceeds the Offer Amount, the Company will select the Notes and other pari passu Indebtedness to be purchased on a pro rata basis based on the principal amount of Notes and such other pari passu Indebtedness surrendered (with such adjustments as may be deemed appropriate by the Company so that only Notes in denominations of $2,000, or an integral multiple of $1,000 in excess of $2,000, will be purchased); and

(I) that Holders whose Notes were purchased only in part will be issued new Notes equal in principal amount to the unpurchased portion of the Notes surrendered (or transferred by book-entry transfer), which unpurchased portion must be equal to $2,000 in principal amount or an integral multiple of $1,000 in excess of $2,000.

(iv) On or before the Purchase Date, the Company will, to the extent lawful, accept for payment, on a pro rata basis to the extent necessary, the Offer Amount of Notes or portions thereof tendered pursuant to the Asset Sale Offer, or

if less than the Offer Amount has been tendered, all Notes tendered, and will deliver or cause to be delivered to the Trustee the Notes properly accepted together with an Officers’ Certificate stating that such Notes or portions thereof were accepted for payment by the Company in accordance with the terms of this Section 10.11. The Company, the depositary or the Paying Agent, as the case may be, will promptly (but in any case not later than five days after the Purchase Date) mail or deliver to each tendering Holder an amount equal to the purchase price of the Notes tendered by such Holder and accepted by the Company for purchase, and the Company will promptly issue a new Note, and the Trustee, upon written request from the Company, will authenticate and mail or deliver (or cause to be transferred by book entry) such new Note to such Holder, in a principal amount equal to any unpurchased portion of the Note surrendered. Any Note not so accepted shall be promptly mailed or delivered by the Company to the Holder thereof. The Company will publicly announce the results of the Asset Sale Offer on the Purchase Date.

SECTION 4.07. Transactions with Affiliates.

Section 10.12 Transactions with Affiliates .

(a) The Company will not, and will not permit any of its Restricted Subsidiaries to, make any payment to, or sell, lease, transfer or otherwise dispose of any of its properties or assets to, or purchase any property or assets from, or enter into or make or amend any transaction, contract, agreement, understanding, loan, advance or Guarantee with, or for the benefit of, any Affiliate of the Company (each, an “ Affiliate Transaction ”), unless:

(i) the Affiliate Transaction is on terms that are no less favorable to the Company or the relevant Restricted Subsidiary than those that would have been obtained in a comparable transaction by the Company or such Restricted Subsidiary with a Person that is not an Affiliate of the Company; and

(ii) the Company delivers to the Trustee:

(A) with respect to any Affiliate Transaction or series of related Affiliate Transactions involving aggregate consideration in excess of $15.0 million, a Board Resolution of the Company set forth in an Officers’ Certificate certifying that such Affiliate Transaction or series of related Affiliate Transactions complies with this Section 10.12 and that such Affiliate Transaction or series of related Affiliate Transactions has been approved by a majority of the disinterested members of the Board of Directors of the Company; and

(B) with respect to any Affiliate Transaction or series of related Affiliate Transactions involving aggregate consideration in excess of $30.0 million, an opinion as to the fairness to the Company or such Restricted Subsidiary of such Affiliate Transaction or series of related Affiliate Transactions from a financial point of view issued by an accounting, appraisal or investment banking firm of national standing.

(b) The following items will not be deemed to be Affiliate Transactions and, therefore, will not be subject to the provisions of Section 10.12(a):

(i) any employment, consulting or similar agreement or arrangement, stock option or stock ownership plan, employee benefit plan, officer or director indemnification agreement, restricted stock agreement, severance agreement or other compensation plan or arrangement entered into by the Company or any of its Restricted Subsidiaries in the ordinary course of business and payments, awards, grants or issuances of securities pursuant thereto;

(ii) transactions between or among the Company and/or its Restricted Subsidiaries;

(iii) transactions with a Person (other than an Unrestricted Subsidiary) that is an Affiliate of the Company solely because the Company owns, directly or through a Subsidiary, an Equity Interest in, or controls, such Person;

(iv) reasonable fees and expenses and compensation paid to, and indemnity or insurance provided on behalf of, officers, directors or employees of the Company or any of its Restricted Subsidiaries;

(v) any issuance of Equity Interests (other than Disqualified Stock) of the Company to, or receipt of a capital contribution from, Affiliates of the Company;

(vi) Restricted Payments that do not violate Section 10.8 of this Indenture or any Permitted Investments;

(vii) loans or advances to employees in the ordinary course of business or consistent with past practice;

(viii) advances to or reimbursements of employees for moving, entertainment and travel expenses, drawing accounts and similar expenditures in the ordinary course of business;

(ix) the performance of obligations of the Company or any of its Restricted Subsidiaries under the terms of any written agreement to which the Company or any of its Restricted Subsidiaries was a party on the Issue Date, as these agreements may be amended, modified or supplemented from time to time; provided , however , that any future amendment, modification or supplement entered into after the Issue Date will be permitted to the extent that its terms do

not materially and adversely affect the rights of any Holders of the Notes (as determined in good faith by the Board of Directors of the Company) as compared to the terms of the agreements in effect on the Issue Date;

(x) (A) guarantees of performance by the Company and its Restricted Subsidiaries of Unrestricted Subsidiaries in the ordinary course of business, except for Guarantees of Indebtedness in respect of borrowed money, and (B) pledges of Equity Interests of Unrestricted Subsidiaries for the benefit of lenders of Unrestricted Subsidiaries;

(xi) transactions between the Company or any Restricted Subsidiary and any Person, a director of which is also a director of the Company or any direct or indirect parent company of the Company and such director is the sole cause for such Person to be deemed an Affiliate of the Company or any Restricted Subsidiary; provided , however , that such director abstains from voting as director of the Company or such direct or indirect parent company of the Company, as the case may be, on any matter involving such other Person; and

(xii) transactions with customers, clients, suppliers, or purchasers or sellers of goods or services, in each case in the ordinary course of business and otherwise in compliance with the terms of this Indenture, provided that in the reasonable determination of the Board of Directors of the Company or the senior management of the Company, such transactions are on terms not materially less favorable to the Company or the relevant Restricted Subsidiary than those that could reasonably be expected to be obtained in a comparable transaction at such time on an arm’s-length basis from a Person that is not an Affiliate of the Company.

SECTION 4.08. Limitation on Liens.

Section 10.13 Limitation on Liens .

(a) The Company will not, and will not permit any of its Restricted Subsidiaries to, directly or indirectly, create, incur or permit to exist any Lien (the “ Initial Lien ”), other than Permitted Liens, upon any of its property or assets (including Capital Stock and Indebtedness of any Subsidiaries of the Company and including any income or profits from such property or assets), whether owned on the Issue Date or thereafter acquired, which Lien secures any Subordinated Debt or other Indebtedness, unless:

(i) in the case of Liens securing Subordinated Debt of the Company or a Subsidiary Guarantor, the Notes or Subsidiary Guarantee, as applicable, are secured by a Lien on such property or assets on a senior basis to the Subordinated Debt so secured with the same priority as the Notes or such Subsidiary Guarantee,

as applicable, has to such Subordinated Debt until such time as such Subordinated Debt is no longer so secured by a Lien; and

(ii) in the case of Liens securing other Indebtedness of the Company or a Subsidiary Guarantor, the Notes or Subsidiary Guarantees, as applicable, are secured by a Lien on such property or assets on an equal and ratable basis with the other Indebtedness so secured until such time as such other Indebtedness is no longer so secured by a Lien.

(b) Any Lien securing the Notes or Subsidiary Guarantees created pursuant to Section 10.13(a) shall provide by its terms that such Lien shall be automatically and unconditionally released and discharged upon the unconditional release and discharge of the Initial Lien.

SECTION 4.09. Offer to Repurchase upon a Change of Control.

Section 10.14 Offer to Repurchase upon a Change of Control .

(a) If a Change of Control occurs, each Holder of Notes will have the right to require the Company to repurchase all or any part (equal to $2,000 or an integral multiple of $1,000 in excess of $2,000) of that Holder’s Notes pursuant to an offer (a “ Change of Control Offer ”) on the terms set forth in this Section 10.14. In the Change of Control Offer, the Company will offer a payment in cash (the “ Change of Control Payment ”) equal to not less than 101% of the aggregate principal amount of Notes repurchased plus accrued and unpaid interest, if any, on the Notes repurchased to the date of purchase (the “ Change of Control Payment Date ”), subject to the rights of Holders of Notes on the relevant Record Date to receive interest due on the relevant Interest Payment Date. Within 30 days following any Change of Control, the Company will mail a notice to each Holder describing the transaction or transactions that constitute the Change of Control and stating:

(i) that the Change of Control Offer is being made pursuant to this Section 10.14 and that all Notes tendered will be accepted for payment;

(ii) the purchase price and the Change of Control Payment Date, which shall be no earlier than 30 days and no later than 60 days from the date such notice is mailed;

(iii) that any Note not tendered will continue to accrue interest;

(iv) that, unless the Company defaults in the payment of the Change of Control Payment, all Notes accepted for payment pursuant to the Change of Control Offer will cease to accrue interest after the Change of Control Payment Date;

(v) that Holders electing to have any Notes purchased pursuant to a Change of Control Offer will be required to surrender the Notes, with the form entitled “Option of Holder to Elect Purchase” attached to the Notes completed, or transfer by book-entry transfer, to the Paying Agent at the address specified in the notice prior to the close of business on the third Business Day preceding the Change of Control Payment Date;

(vi) that Holders will be entitled to withdraw their election if the Paying Agent receives, not later than the close of business on the second Business Day preceding the Change of Control Payment Date, a telegram, telex, facsimile transmission or letter setting forth the name of the Holder, the principal amount of Notes delivered for purchase, and a statement that such Holder is withdrawing his election to have the Notes purchased; and

(vii) that Holders whose Notes are being purchased only in part will be issued new Notes equal in principal amount to the unpurchased portion of the Notes surrendered (or transferred by book-entry transfer), which unpurchased portion must be equal to $2,000 in principal amount or an integral multiple of $1,000 in excess of $2,000.

The Company will comply with the requirements of Rule 14e-1 under the Exchange Act and any other securities laws and regulations thereunder to the extent those laws and regulations are applicable in connection with the repurchase of the Notes as a result of a Change of Control. To the extent that the provisions of any securities laws or regulations conflict with the Change of Control provisions of this Indenture, the Company will comply with the applicable securities laws and regulations and will not be deemed to have breached its obligations under the Change of Control provisions of this Indenture by virtue of such compliance.

(b) On the Change of Control Payment Date, the Company will, to the extent lawful:

(i) accept for payment all Notes or portions of Notes properly tendered pursuant to the Change of Control Offer;

(ii) deposit with the Paying Agent an amount equal to the Change of Control Payment in respect of all Notes or portions of Notes properly tendered; and

(iii) deliver or cause to be delivered to the Trustee the Notes properly accepted together with an Officers’ Certificate stating the aggregate principal amount of Notes or portions of Notes being purchased by the Company.

(c) The Paying Agent will promptly mail or wire transfer to each Holder of Notes properly tendered the Change of Control Payment for such Notes (or, if all the Notes are then in global form, make such payment through the facilities of the Depositary), and the Trustee will promptly authenticate and mail (or cause to be transferred by book entry) to each Holder a new Note equal in principal amount to any

unpurchased portion of the Notes surrendered, if any; provided that each such new Note will be in a principal amount of $2,000 or an integral multiple of $1,000 in excess of $2,000. Any Note so accepted for payment will cease to accrue interest on and after the Change of Control Payment Date unless the Company defaults in making the Change of Control Payment.

(d) The Company will publicly announce the results of the Change of Control Offer on or as soon as practicable after the Change of Control Payment Date.

(e) Notwithstanding anything to the contrary in this Section 10.14, the Company will not be required to make a Change of Control Offer upon a Change of Control if a third party makes the Change of Control Offer in the manner, at the price, at the times and otherwise in compliance with the requirements set forth in this Indenture applicable to a Change of Control Offer made by the Company and purchases all Notes properly tendered and not withdrawn under the Change of Control Offer.

(f) A Change of Control Offer may be made in advance of a Change of Control, and conditioned upon the occurrence of such Change of Control, if a definitive agreement is in place for the Change of Control at the time of making the Change of Control Offer. Notes repurchased by the Company pursuant to a Change of Control Offer will have the status of Notes issued but not Outstanding or will be retired and cancelled, at the Company’s option. Notes purchased by a third party pursuant to clause (e) of this Section 10.14 will have the status of Notes issued and Outstanding.

(g) In the event that Holders of at least 90% of the aggregate principal amount of the Outstanding Notes accept a Change of Control Offer and the Company (or any third party making such Change of Control Offer, in lieu of the Company, as described in clause (e) of this Section 10.14) purchases all of the Notes held by such Holders, the Company will have the right, upon not less than 30 nor more than 60 days’ prior notice, given not more than 30 days following a Change of Control Payment Date, to redeem all, but not less than all, of the Notes that remain Outstanding at a Redemption Price equal to the Change of Control Payment plus , to the extent not included in the Change of Control Payment, accrued and unpaid interest, if any, on the Notes that remain Outstanding, to the date of redemption (subject to the right of Holders on the relevant record date to receive interest due on the relevant Interest Payment Date).

SECTION 4.10. Designation of Restricted and Unrestricted Subsidiaries.

Section 10.15 Designation of Restricted and Unrestricted Subsidiaries .

(a) The Board of Directors of the Company may designate any Restricted Subsidiary to be an Unrestricted Subsidiary if that designation would not cause a Default. If a Restricted Subsidiary is designated as an Unrestricted Subsidiary, the aggregate Fair Market Value of all outstanding Investments owned by the Company and its Restricted

Subsidiaries in the Subsidiary designated as an Unrestricted Subsidiary will be deemed to be an Investment made as of the time of the designation. That designation will only be permitted if the applicable Restricted Subsidiary meets the definition of an Unrestricted Subsidiary and if such Investment would be permitted at that time, either pursuant to (i) Section 10.8 or (ii) the definition of Permitted Investment.

(b) Any designation of a Subsidiary of the Company as an Unrestricted Subsidiary will be evidenced to the Trustee by filing with the Trustee a certified copy of a Board Resolution of the Company giving effect to such designation and an Officers’ Certificate certifying that such designation complied with the preceding conditions and was permitted by Section 10.8. If, at any time, any Unrestricted Subsidiary would fail to meet the requirements of the definition of “Unrestricted Subsidiary” set forth in Section 1.1 of this Indenture, it will thereafter cease to be an Unrestricted Subsidiary for purposes of this Indenture and any Indebtedness of such Subsidiary will be deemed to be incurred by a Restricted Subsidiary as of such date and, if such Indebtedness is not permitted to be incurred as of such date under Section 10.10, the Company will be in Default of the covenant in Section 10.10. The Board of Directors of the Company may at any time designate any Unrestricted Subsidiary to be a Restricted Subsidiary; provided that such designation will be deemed to be an incurrence of Indebtedness by a Restricted Subsidiary of any outstanding Indebtedness of such Unrestricted Subsidiary, and such designation will only be permitted if (i) such Indebtedness is permitted under Section 10.10, calculated on a pro forma basis as if such designation had occurred at the beginning of the four-quarter reference period; and (ii) no Default or Event of Default would be in existence following such designation.

SECTION 4.11. Subsidiary Guarantees.

Section 10.16 Subsidiary Guarantees .

(a) If, after the Issue Date, (i) any Material Domestic Subsidiary that is not already a Subsidiary Guarantor incurs any Indebtedness in excess of a De Minimis Amount, or issues any preferred stock or (ii) any Domestic Restricted Subsidiary incurs any Indebtedness whatsoever in respect of obligations under the Senior Credit Agreement, then such Subsidiary (referred to in clause (i) or (ii) of this sentence) will become a Subsidiary Guarantor by executing and delivering a supplemental indenture, in the form provided for in this Indenture, to the Trustee within 30 days of the date on which it incurred such Indebtedness or issued such preferred stock (in each case, referred to in clause (i) or (ii) of this sentence).

(b) The Subsidiary Guarantee of a Subsidiary Guarantor will be released upon request of the Subsidiary Guarantor at such time as such Subsidiary Guarantor is not liable for any Indebtedness and has no preferred stock outstanding, as long as at the time of such release (i) no Default or Event of Default has occurred and is continuing, (ii) the

Subsidiary Guarantor is not an obligor party to any undrawn Credit Facility or any Credit Facility under which letters of credit are outstanding or any instrument governing the terms of undrawn Indebtedness or any Guarantee thereof and (iii) the Subsidiary Guarantor has not been liable under any Indebtedness whatsoever during the immediately preceding 181 consecutive days.

SECTION 4.12. Termination of Certain Covenants.

Section 10.17 Termination of Certain Covenants .

From and after the occurrence of an Investment Grade Rating Event, the Company and its Restricted Subsidiaries shall no longer be subject to clause (iv) of Section 8.1(a) and Sections 10.8, 10.9, 10.10, 10.11 and 10.12 of this Indenture. Furthermore, after an Investment Grade Rating Event, the Company may not designate any of its Subsidiaries as Unrestricted Subsidiaries.

ARTICLE 5
Miscellaneous

SECTION 5.01. Certain Trustee Matters.

The recitals contained herein shall be taken as the statements of the Company, and the Trustee assumes no responsibility for their correctness.

The Trustee makes no representations as to the validity or sufficiency of this First Supplemental Indenture or the Notes or the proper authorization or the due execution hereof or thereof by the Company.

Except as expressly set forth herein, nothing in this First Supplemental Indenture shall alter the duties, rights or obligations of the Trustee set forth in the Original Indenture.

The Trustee makes no representation or warranty as to the validity or sufficiency of the information contained in the offering memorandum related to the Notes, except such information which specifically pertains to the Trustee itself, or any information incorporated therein by reference.

SECTION 5.02. Continued Effect.

Except as expressly supplemented and amended by this First Supplemental Indenture, the Original Indenture shall continue in full force and effect in accordance with the provisions thereof, and the Original Indenture (as supplemented and amended by this First Supplemental Indenture) is in all respects hereby ratified and confirmed. This First Supplemental Indenture

and all its provisions shall be deemed a part of the Original Indenture in the manner and to the extent herein and therein provided.

SECTION 5.03. Governing Law.

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

SECTION 5.04. Counterparts.

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

( Remainder of Page Intentionally Left Blank )

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


	THE COMPANY: OASIS PETROLEUM INC.
	By:	/s/ Thomas B. Nusz
		Thomas B. Nusz
		President and Chief Executive Officer

	THE SUBSIDIARY GUARANTORS: OASIS PETROLEUM LLC OASIS PETROLEUM NORTH AMERICA LLC
	By:	/s/ Thomas B. Nusz
		Thomas B. Nusz
		President and Chief Executive Officer

Signature Page to First Supplemental Indenture


	TRUSTEE: U.S. BANK NATIONAL ASSOCIATION
	By:	/s/ Steven Finklea
		Steven Finklea
		Vice President

Signature Page to First Supplemental Indenture

EXHIBIT A

[Face of Note]

CUSIP: [ ] ¹
ISIN: [ ] ²

7.25% Senior Note due 2019


No. —		$[ ]

OASIS PETROLEUM INC. promises to pay to CEDE & CO. or registered assigns, the principal sum of DOLLARS on February 1, 2019.

Interest Payment Dates: February 1 and August 1, commencing August 1, 2011

Record Dates: January 15 and July 15

Dated:


	OASIS PETROLEUM INC.
	By:
		Name:
		Title:

This is one of the Securities of the series
designated 7.25% Senior Notes due 2019
referred to in the within-mentioned Indenture.


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


¹	Rule 144A Note CUSIP:	674215AA6
	Regulation S Note CUSIP:	U65204AA4

²	Rule 144A Note ISIN:	US674215AA68
	Regulation S Note ISIN:	USU65204AA40

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[ If a Global Note, insert — THIS GLOBAL NOTE IS HELD BY THE DEPOSITARY (AS DEFINED IN THE INDENTURE GOVERNING THIS NOTE) OR ITS NOMINEE IN CUSTODY FOR THE BENEFIT OF THE BENEFICIAL OWNERS HEREOF, AND IS NOT TRANSFERABLE TO ANY PERSON UNDER ANY CIRCUMSTANCES EXCEPT THAT (1) THE TRUSTEE MAY MAKE SUCH NOTATIONS HEREON AS MAY BE REQUIRED PURSUANT TO SECTION 3.5 OF THE INDENTURE, (2) THIS GLOBAL NOTE MAY BE EXCHANGED IN WHOLE BUT NOT IN PART PURSUANT TO SECTION 3.5(a) OF THE INDENTURE, (3) THIS GLOBAL NOTE MAY BE DELIVERED TO THE TRUSTEE FOR CANCELLATION PURSUANT TO SECTION 3.9 OF THE INDENTURE AND (4) THIS GLOBAL NOTE MAY BE TRANSFERRED TO A SUCCESSOR DEPOSITARY WITH THE PRIOR WRITTEN CONSENT OF THE COMPANY.

[ If a Restricted Global Note or a Restricted Definitive Note, insert — THIS NOTE HAS NOT BEEN REGISTERED UNDER THE UNITED STATES SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), OR THE SECURITIES LAWS OF ANY STATE OR OTHER JURISDICTION. NEITHER THIS NOTE NOR ANY INTEREST OR PARTICIPATION HEREIN MAY BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, SUCH REGISTRATION.

THE HOLDER OF THIS NOTE, BY ITS ACCEPTANCE HEREOF, AGREES ON ITS OWN BEHALF AND ON NOTE OF ANY INVESTOR ACCOUNT FOR WHICH IT HAS PURCHASED NOTES, TO OFFER, SELL OR OTHERWISE TRANSFER SUCH NOTE, PRIOR TO THE DATE (THE “RESALE RESTRICTION TERMINATION DATE”) THAT IS IN THE CASE OF RULE 144A NOTES: ONE YEAR (OR SUCH SHORTER PERIOD THEN

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REQUIRED UNDER RULE 144 OR ITS SUCCESSOR RULE); OR IN THE CASE OF REGULATION S NOTES: 40 DAYS AFTER THE LATER OF THE ORIGINAL ISSUE DATE HEREOF AND THE LAST DATE ON WHICH THE COMPANY OR ANY AFFILIATE OF THE COMPANY WAS THE OWNER OF THIS NOTE (OR ANY PREDECESSOR OF SUCH NOTE), ONLY (A) TO THE COMPANY, (B) PURSUANT TO A REGISTRATION STATEMENT THAT HAS BEEN DECLARED EFFECTIVE UNDER THE SECURITIES ACT, (C) FOR SO LONG AS THE NOTES ARE ELIGIBLE FOR RESALE PURSUANT TO RULE 144A UNDER THE SECURITIES ACT TO A PERSON IT REASONABLY BELIEVES IS A “QUALIFIED INSTITUTIONAL BUYER” AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER TO WHOM NOTICE IS GIVEN THAT THE TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A, (D) PURSUANT TO OFFERS AND SALES THAT OCCUR OUTSIDE THE UNITED STATES WITHIN THE MEANING OF REGULATION S UNDER THE SECURITIES ACT OR (E) PURSUANT TO ANOTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, SUBJECT TO THE COMPANY’S AND THE TRUSTEE’S RIGHT PRIOR TO ANY SUCH OFFER, SALE OR TRANSFER PURSUANT TO CLAUSE (E) TO REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL, CERTIFICATION AND/OR OTHER INFORMATION SATISFACTORY TO EACH OF THEM. THIS LEGEND WILL BE REMOVED UPON THE REQUEST OF THE HOLDER AFTER THE RESALE RESTRICTION TERMINATION DATE.

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[Back of Note]
7.25% Senior Note due 2019

Capitalized terms used herein have the meanings assigned to them in the Indenture referred to below unless otherwise indicated. To the extent that any of the terms and provisions of this Note conflict with the express provisions of the Indenture, the terms and provisions of the Indenture shall govern and be controlling.

(1) Interest . Interest on the Notes will accrue at the rate of 7.25% per annum and will be payable semi-annually in arrears on February 1 and August 1, beginning on August 1, 2011. Interest on the Notes will accrue from the date of original issuance or, if interest has already been paid, from the date it was most recently paid. Interest will be computed on the basis of a 360-day year comprised of twelve 30-day months. If a payment date is a Legal Holiday at a Place of Payment, payment may be made at that place on the next succeeding day that is not a Legal Holiday, and no interest shall accrue on such payment for the intervening period. The Company will pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue principal at the rate equal to the applicable interest rate on the Notes to the extent lawful; it will pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue installments of interest (without regard to any applicable grace period) at the same rate to the extent lawful. Pursuant to the Indenture (as defined below), each reference to “interest” appearing herein shall be deemed to refer to “interest and Liquidated Damages, if any.”

(2) Method of Payment . The Company will pay interest on the Notes (except Defaulted Interest) to the Persons who are registered Holders of Notes at the close of business on the January 15 or July 15 next preceding the Interest Payment Date, even if such Notes are canceled after such record date and on or before such Interest Payment Date, except as provided in Section 3.7 of the Indenture with respect to Defaulted Interest. Holders must surrender Notes to the Paying Agent to collect payments of principal and premium, if any, due at Maturity. The Notes will be payable as to principal, premium, if any, and interest at the office or agency of the Company maintained for such purpose at the Corporate Trust Office and in the City and State of New York, or, at the option of the Company, payment of interest, if any, may be made by check mailed to the Holders at their addresses set forth in the Security Register; provided that payment by wire transfer of immediately available funds will be required with respect to principal of and interest and premium, if any, on, all Global Notes and all other Notes the Holders of which will have provided wire transfer instructions to the Company or the Paying Agent. Such payment will be in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts.

(3) Paying Agent and Security Registrar . Initially, U.S. Bank National Association, the Trustee under the Indenture, will act as Paying Agent and Security Registrar. The Company may change any Paying Agent or Security Registrar without notice to any Holder. The Company or any of its Restricted Subsidiaries may act in any such capacity.

(4) Indenture . The Notes are a series of Securities issued by the Company under an Indenture, dated as of February 2, 2011, by and among the Company and the Trustee (the “ Original Indenture ”), as amended and supplemented by the First Supplemental Indenture

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thereto, dated as of February 2, 2011, by and among the Company, the Subsidiary Guarantors parties thereto and the Trustee (the “ Supplemental Indenture ”), and designated as the “7.25% Senior Notes due 2019.” The Original Indenture, as amended and supplemented by the Supplemental Indenture, is referred to herein as the “ Indenture .” The terms of the Notes include those stated in the Indenture and those made part of the Indenture by reference to the Trust Indenture Act. The Notes are subject to all such terms, and Holders are referred to the Indenture and such Act for a statement of such terms. To the extent any provision of this Note conflicts with the express provisions of the Indenture, the provisions of the Indenture shall govern and be controlling. The Notes are unsecured obligations of the Company. The Indenture does not limit the aggregate principal amount of Notes or any other series of Securities that may be issued thereunder.

(5) Optional Redemption . Except as described below or in Section 10.14 of the Indenture, the Notes are not redeemable until February 1, 2015. On and after February 1, 2015, the Company may redeem all or a part of the Notes, from time to time, at the following Redemption Prices (expressed as a percentage of principal amount) plus accrued and unpaid interest, if any, on the Notes redeemed to the applicable Redemption Date (subject to the rights of Holders of Notes on the relevant record date to receive interest due on the relevant Interest Payment Date), if redeemed during the twelve-month period beginning on February 1 of the years indicated below:


Year	Redemption Price
2015		103.625	%
2016		101.813	%
2017 and thereafter		100.000	%

At any time or from time to time prior to February 1, 2015, the Company may also redeem all or a part of the Notes, at a Redemption Price equal to the Make-Whole Price, subject to the rights of Holders of Notes on the relevant record date to receive interest due on the relevant Interest Payment Date.

“ Make-Whole Price ” with respect to any Notes to be redeemed, means an amount equal to the greater of:

(1) 100% of the principal amount of such Notes; and

(2) the sum of the present values of (a) the Redemption Price of such Notes at February 1, 2015 (as set forth above) and (b) the remaining scheduled payments of interest from the Redemption Date to February 1, 2015 (not including any portion of such payments of interest accrued as of the Redemption Date) discounted back to the Redemption Date on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate (as defined below) plus 50 basis points;

plus , in the case of both (1) and (2), accrued and unpaid interest on such Notes, if any, to the Redemption Date.

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“ Comparable Treasury Issue ” means, with respect to Notes to be redeemed, the U.S. Treasury security selected by an Independent Investment Banker as having a maturity most nearly equal to the period from the Redemption Date to February 1, 2015, that would be utilized at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of a comparable maturity; provided that if such period is less than one year, then the U.S. Treasury security having a maturity of one year shall be used.

“ Comparable Treasury Price ” means, with respect to any Redemption Date, (1) the average of the Reference Treasury Dealer Quotations for such Redemption Date, after excluding the highest and lowest of such Reference Treasury Dealer Quotations, or (2) if the Trustee obtains fewer than five such Reference Treasury Dealer Quotations, the average of all such Reference Treasury Dealer Quotations.

“ Independent Investment Banker ” means J.P. Morgan Securities LLC, Wells Fargo Securities, LLC or one of their respective successors, or, if such firms or their respective successors, if any, as the case may be, are unwilling or unable to select the Comparable Treasury Issue, an independent investment banking institution of national standing appointed by the Company.

“ Reference Treasury Dealer ” means each of J.P. Morgan Securities LLC, Wells Fargo Securities, LLC and three additional primary Government Securities dealers in New York City (each a “ Primary Treasury Dealer ”) selected by the Company, and their respective successors; provided , however , that if any such firm or any such successor, as the case may be, shall cease to be a primary Government Securities dealer in New York City, the Company shall substitute therefor another Primary Treasury Dealer.

“ Reference Treasury Dealer Quotations ” means, with respect to each Reference Treasury Dealer and any Redemption Date, the average, as determined by the Trustee, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to the Trustee by such Reference Treasury Dealer at 5:00 p.m., New York City time, on the third Business Day preceding such Redemption Date.

“ Treasury Rate ” means, with respect to any Redemption Date, (1) the yield, under the heading which represents the average for the immediately preceding week, appearing in the most recently published statistical release designated “H.15(159)” or any successor publication that is published weekly by the Board of Governors of the Federal Reserve System and that establishes yields on actively traded U.S. Treasury securities adjusted to constant maturity under the caption “Treasury Constant Maturities,” for the maturity corresponding to the Comparable Treasury Issue (if no maturity is within three months before or after the stated maturity, yields for the two published maturities most closely corresponding to the Comparable Treasury Issue shall be determined, and the Treasury Rate shall be interpolated or extrapolated from such yields on a straight-line basis, rounding to the nearest month) or (2) if such release (or any successor release) is not published during the week preceding the calculation date or does not contain such yields, the rate per annum equal to the semi-annual equivalent yield to maturity of the Comparable Treasury Issue, calculated using a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for such Redemption

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Date. The Treasury Rate shall be calculated on the third Business Day preceding the Redemption Date.

The notice of redemption with respect to the foregoing redemption need not set forth the Make-Whole Price but only the manner of calculation thereof. The Company will notify the Trustee of the Make-Whole Price with respect to any redemption promptly after the calculation, and the Trustee shall not be responsible for such calculation.

Prior to February 1, 2014, the Company may on any one or more occasions redeem up to 35% of the principal amount of the Notes, with all or a portion of the net cash proceeds of one or more Equity Offerings at a Redemption Price equal to 107.25% of the principal amount thereof, plus accrued and unpaid interest, if any, on the Notes redeemed to the Redemption Date (subject to the right of Holders of record on the relevant record date to receive interest due on the relevant Interest Payment Date); provided that:

(1) at least 65% of the aggregate principal amount of the Notes issued on the Issue Date (excluding Notes held by the Company and its Subsidiaries) remains Outstanding after each such redemption; and

(2) the redemption occurs within 180 days after the closing of such Equity Offering.

Notice of any redemption upon an Equity Offering may be given prior to the completion of the related Equity Offering, and any such redemption or notice may at the Company’s discretion, be subject to one or more conditions precedent, including, but not limited to completion of the related Equity Offering.

In the event that Holders of at least 90% of the aggregate principal amount of the Outstanding Notes accept a Change of Control Offer and the Company (or any third party making such Change of Control Offer, in lieu of the Company, as described in clause (e) of Section 10.14) purchases all of the Notes held by such Holders, the Company will have the right, upon not less than 30 nor more than 60 days’ prior notice, given not more than 30 days following a Change of Control Payment Date, to redeem all, but not less than all, of the Notes that remain Outstanding at a Redemption Price equal to the Change of Control Payment plus, to the extent not included in the Change of Control Payment, accrued and unpaid interest, if any, on the Notes that remain Outstanding, to the date of redemption (subject to the right of Holders on the relevant record date to receive interest due on the relevant Interest Payment Date).

Unless the Company defaults in the payment of the Redemption Price, interest, if any, will cease to accrue on the Notes or portions thereof called for redemption on the applicable Redemption Date.

(6) Mandatory Redemption . The Company is not required to make mandatory redemption or sinking fund payments with respect to the Notes. However, under certain circumstances, the Company may be required to offer to purchase Notes pursuant to Section 10.11 or 10.14 of the Indenture.

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(7) Repurchase at the Option of Holder .

(a) If there is a Change of Control, the Company will be required to make an offer (a “ Change of Control Offer ”) to each Holder to repurchase all or any part (equal to $2,000 or an integral multiple of $1,000 in excess $2,000) of each Holder’s Notes at a purchase price in cash equal to not less than 101% of the aggregate principal amount thereof plus accrued and unpaid interest, if any, thereon to the date of purchase, subject to the rights of Holders on the relevant record date to receive interest due on the relevant Interest Payment Date (the “ Change of Control Payment ”). Within 30 days following any Change of Control, the Company will mail a notice to each Holder setting forth the procedures governing the Change of Control Offer as required by the Indenture.

(b) If the Company or a Restricted Subsidiary of the Company consummates any Asset Sales, within 10 Business Days of each date on which the aggregate amount of Excess Proceeds exceeds $20.0 million, the Company will make an offer (an “ Asset Sale Offer ”) to all Holders of Notes and all holders of other Indebtedness that is pari passu with the Notes containing provisions similar to those set forth in the Indenture with respect to offers to purchase or redeem with the proceeds of sales of assets pursuant to Section 10.11 of the Indenture to purchase the maximum principal amount of Notes and such other pari passu Indebtedness that may be purchased out of the Excess Proceeds. The offer price in any Asset Sale will be equal to 100% of the principal amount plus accrued and unpaid interest, if any, to the date of purchase, in accordance with the procedures set forth in the Indenture. If any Excess Proceeds remain unapplied after the consummation of an Asset Sale Offer, the Company (or any Restricted Subsidiary) may use the Excess Proceeds for any purpose not otherwise prohibited by the Indenture. If the aggregate principal amount of Notes and other pari passu Indebtedness tendered into such Asset Sale Offer exceeds the amount of Excess Proceeds, the Company will use the Excess Proceeds to purchase the Notes and such other pari passu Indebtedness on a pro rata basis. Holders of Notes that are the subject of an offer to purchase will receive notice of an Asset Sale Offer from the Company prior to any related purchase date and may elect to have such Notes purchased by completing the form entitled “ Option of Holder to Elect Purchase ” attached to the Notes.

(8) Notice of Redemption . Notice of redemption will be mailed at least 30 days but not more than 60 days before the Redemption Date to each Holder whose Notes are to be redeemed at its registered address, except that redemption notices may be mailed more than 60 days prior to a Redemption Date if the notice is issued in connection with a defeasance of the Notes or a satisfaction or discharge of the Indenture. Notes in denominations larger than $2,000 may be redeemed in part but only in whole multiples of $1,000, unless all of the Notes held by a Holder are to be redeemed.

(9) Denominations, Transfer, Exchange . The Notes are in registered form without coupons in denominations of $2,000 and integral multiples of $1,000 in excess of $2,000. The transfer of Notes may be registered and Notes may be exchanged as provided in the Indenture. The Security Registrar and the Trustee may require a Holder, among other things, to furnish appropriate endorsements and transfer documents in connection with a transfer of its Notes, and the Company may require a Holder to pay any taxes and fees required by law or permitted by the

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Indenture. The Company need not exchange or register the transfer of any Note or portion of a Note selected for redemption, except for the unredeemed portion of any Note being redeemed in part. Also, the Company need not exchange or register the transfer of any Notes for a period of 15 days before a selection of Notes to be redeemed or during the period between a record date and the corresponding Interest Payment Date.

(10) Persons Deemed Owners . The registered Holder of a Note may be treated as its owner for all purposes.

(11) Amendment, Supplement and Waiver . Subject to certain exceptions, the Indenture or the Notes may be amended or supplemented with the consent of the Holders of a majority in aggregate principal amount of the Notes then Outstanding (including, without limitation, consents obtained in connection with a purchase of, or tender offer or exchange offer for, Notes), and any existing default or compliance with any provision of the Indenture or the Notes may be waived with the consent of the Holders of a majority in aggregate principal amount of the Notes then Outstanding (including, without limitation, consents obtained in connection with a purchase of, or tender offer or exchange offer for, Notes). Without the consent of any Holder of a Note, the Indenture or the Notes may be amended or supplemented to, among other things, cure any ambiguity, defect or inconsistency, or make any change that does not adversely affect the rights or interests under the Indenture of any such Holder.

(12) Defaults and Remedies . In the case of an Event of Default arising from events of bankruptcy or insolvency specified in clause (ix) or (x) of Section 5.1(a) of the Indenture, all Outstanding Notes will become due and payable immediately without further action or notice. If any other Event of Default occurs and is continuing, the Trustee or the Holders of at least 25% in aggregate principal amount of the then Outstanding Notes may declare all the Notes to be due and payable immediately by notice in writing to the Company specifying the Event of Default. Holders of the Notes may not enforce the Indenture or the Notes except as provided in the Indenture. Subject to certain limitations, Holders of a majority in aggregate principal amount of the then Outstanding Notes may direct the Trustee in its exercise of any trust or power. The Trustee may withhold from Holders of the Notes notice of any Default or Event of Default (except a Default or Event of Default relating to the payment of principal, premium or interest) if and so long as a committee of its Responsible Officers in good faith determines that withholding the notice is in the interests of the Holders of the Notes. The Company is required to deliver to the Trustee annually an Officers’ Certificate regarding the compliance with the Indenture, and the Company is required, upon becoming aware of any Default or Event of Default, to deliver to the Trustee a statement specifying such Default or Event of Default. The Holders of a majority in aggregate principal amount of the Notes then Outstanding by notice to the Trustee may on behalf of the Holders of all of the Notes waive any existing Default or Event of Default and its consequences under the Indenture, except a continuing Default or Event of Default in the payment of interest on, or the principal of, the Notes. The Holders of a majority in aggregate principal amount of the then Outstanding Notes will have the right to direct the time, method and place of conducting any proceeding for any remedy available to the Trustee. However, the Trustee may refuse to follow any direction that conflicts with law or the Indenture, that may involve the Trustee in personal liability, and may take any other action it deems proper that is not inconsistent with any such direction received from Holders of Notes.

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(13) Trustee Dealings with Company . The Trustee, in its individual or any other capacity, may make loans to, accept deposits from, and perform services for the Company or its Affiliates, and may otherwise deal with the Company or its Affiliates, as if it were not the Trustee.

(14) No Recourse Against Others . No past, present or future director, officer, employee, incorporator, stockholder, member, manager or partner of the Company or any Subsidiary Guarantor, as such, will have any liability for any obligations of the Company or the Subsidiary Guarantors under the Notes, the Indenture, the Subsidiary Guarantees, if applicable, or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each Holder of Notes by accepting a Note waives and releases all such liability. The waiver and release are part of the consideration for issuance of the Notes.

(15) Authentication . This Note will not be valid until authenticated by the manual signature of the Trustee or an authenticating agent.

(16) Additional Rights of Holders of Restricted Global Notes and Restricted Definitive Notes. In addition to the rights provided to Holders under the Indenture, Holders of Restricted Global Notes and Restricted Definitive Notes shall have all the rights and obligations set forth in the Registration Rights Agreement. By any such Holder’s acceptance of Restricted Global Notes or Restricted Definitive Notes, such Holder acknowledges and agrees to the provisions of the applicable Registration Rights Agreement, including without limitation the obligations of the Holders with respect to indemnification of the Company to the extent provided therein.

(17) Abbreviations . Customary abbreviations may be used in the name of a Holder or an assignee, such as: TEN COM (= tenants in common), TEN ENT (= tenants by the entireties), JT TEN (= joint tenants with right of survivorship and not as tenants in common), CUST (= Custodian), and U/G/M/A (= Uniform Gifts to Minors Act).

(18) CUSIP Numbers . Pursuant to a recommendation promulgated by the Committee on Uniform Security Identification Procedures, the Company has caused CUSIP and CINS numbers to be printed on the Notes, and the Trustee may use CUSIP and CINS numbers in notices of redemption as a convenience to Holders. No representation is made as to the accuracy of such numbers either as printed on the Notes or as contained in any notice of redemption, and reliance may be placed only on the other identification numbers placed thereon.

(19) GOVERNING LAW. THE LAW OF THE STATE OF NEW YORK WILL GOVERN AND BE USED TO CONSTRUE AND ENFORCE THE INDENTURE AND THIS NOTE.

The Company will furnish to any Holder upon written request and without charge a copy of the Original Indenture, the Supplemental Indenture and/or the Registration Rights Agreement. Requests may be made to:

Oasis Petroleum Inc.
First City Tower
1001 Fannin, Suite 1500

A-10

Houston, Texas 77002
Attention: General Counsel

A-11

Assignment Form

To assign this Note, fill in the form below:

(I) or (we) assign and transfer this Note to:

(Insert assignee’s legal name)

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

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

and irrevocably appoint

to transfer this Note on the books of the Company. The agent may substitute another to act for him.

Date: _______________

Your Signature: _______________________________
(Sign exactly as your name appears on the face of
this Note)

Signature Guarantee*: _____________________


*		Participant in a recognized Signature Guarantee Medallion Program (or other signature guarantor acceptable to the Trustee).

A-12

Option of Holder to Elect Purchase

If you want to elect to have this Note purchased by the Company pursuant to Section 10.11 or 10.14 of the Indenture, check the appropriate box below:

o Section 10.11 o Section 10.14

If you want to elect to have only part of the Note purchased by the Company pursuant to Section 10.11 or Section 10.14 of the Indenture, state the amount you elect to have purchased:

$_______________

Date: _______________

Your Signature: ____________________________
(Sign exactly as your name appears
on the face of this Note)
Tax Identification No.: _______________________

Signature Guarantee*: _________________________


*		Participant in a recognized Signature Guarantee Medallion Program (or other signature guarantor acceptable to the Trustee).

A-13

[ If a Global Note, insert as a separate page —

Schedule of Exchanges of Interests in the Global Note

The following exchanges of a part of this Global Note for an interest in another Global Note or for a Definitive Note, or exchanges of a part of another Global Note or Definitive Note for an interest in this Global Note, have been made:


	Amount of	Amount of	Principal
	Decrease in	Increase in	Amount	Signature of
	Principal	Principal	of this Global	Authorized
	Amount	Amount	Note Following	Officer of
Date of	of	of	Such Decrease	Trustee or
Exchange	this Global Note	this Global Note	(or Increase)	Custodian]

A-14

[ If the Note is subject to a Subsidiary Guarantee, insert as a separate page—

SUBSIDIARY GUARANTEE NOTATION

For value received, each Subsidiary Guarantor (which term includes any successor Person under the Indenture) has, jointly and severally, unconditionally guaranteed, to the extent set forth in the Indenture and subject to the provisions in Indenture dated as of February 2, 2011 (the “ Original Indenture ”) by and between Oasis Petroleum Inc., a Delaware corporation (the “ Company ”), and U.S. Bank National Association (the “ Trustee ”), as amended and supplemented by the First Supplemental Indenture thereto dated as of February 2, 2011 by and among the Company, the Subsidiary Guarantors parties thereto and the Trustee (the “ First Supplemental Indenture ”), (a) the due and punctual payment of the principal of, premium, if any, and interest on, the Notes, whether at Stated Maturity, by acceleration, redemption or otherwise, the due and punctual payment of interest on overdue principal of and interest on the Notes, if any, if lawful, and the due and punctual performance of all other obligations of the Company to the Holders or the Trustee all in accordance with the terms of the Indenture and (b) in case of any extension of time of payment or renewal of any Notes or any of such other obligations, that the same will be promptly paid in full when due or performed in accordance with the terms of the extension or renewal, whether at Stated Maturity, by acceleration or otherwise. The obligations of the Subsidiary Guarantors to the Holders of Notes and to the Trustee pursuant to the Subsidiary Guarantee and the Indenture are expressly set forth in Article Fourteen of the Indenture and reference is hereby made to the Indenture for the precise terms of the Subsidiary Guarantee, which is subject to release in the circumstances set forth therein. Each Holder of a Note, by accepting the same, agrees to and shall be bound by such provisions.

Capitalized terms used but not defined herein have the meanings given to them in the Indenture.


Subsidiary Guarantors:
[NAMES OF SUBSIDIARY GUARANTORS]
By:
	Name:
	Title:	]

A-15

EXHIBIT B

FORM OF CERTIFICATE OF TRANSFER

Oasis Petroleum Inc.
First City Tower
1001 Fannin, Suite 1500
Houston, Texas 77002

U.S. Bank National Association
5555 San Felipe, Suite 1150
Houston, Texas 77056
Attention: Corporate Trust Services

Re: $[ ] 7.25% Senior Notes due 2019

Reference is hereby made to the Indenture, dated as of February 2, 2011 (the “ Original Indenture ”), by and between Oasis Petroleum Inc., a Delaware corporation (the “ Company ”), and U.S. Bank National Association (the “ Trustee ”), as amended and supplemented by the First Supplemental Indenture thereto, dated as of February 2, 2011, by and among the Company, the Subsidiary Guarantors parties thereto and the Trustee (the “ Supplemental Indenture ”). The Original Indenture, as amended and supplemented by the Supplemental Indenture, is referred to herein as the " Indenture .” Capitalized terms used but not defined herein shall have the meanings given to them in the Indenture.

(the “ Transferor ”), owns and proposes to transfer the Note[s] or interest in such Note[s] specified in Annex A hereto, in the principal amount of $ in such Note[s] or interests (the “ Transfer ”), to (the “ Transferee ”), as further specified in Annex A hereto. In connection with the Transfer, the Transferor hereby certifies that:

[CHECK ALL THAT APPLY]

1. o Check if Transferee will take delivery of a beneficial interest in the 144A Global Note or a Restricted Definitive Note pursuant to Rule 144A . The Transfer is being effected pursuant to and in accordance with Rule 144A under the Securities Act of 1933, as amended (the “ Securities Act ”), and, accordingly, the Transferor hereby further certifies that the beneficial interest or Definitive Note is being transferred to a Person that the Transferor reasonably believed and believes is purchasing the beneficial interest or Definitive Note for its own account, or for one or more accounts with respect to which such Person exercises sole investment discretion, and such Person and each such account is a “qualified institutional buyer” within the meaning of Rule 144A in a transaction meeting the requirements of Rule 144A, and such Transfer is in compliance with any applicable blue sky securities laws of any state of the United States. Upon consummation of the proposed Transfer in accordance with the terms of the Indenture, the transferred beneficial interest or Definitive Note will be subject to the restrictions on transfer enumerated in the Private Placement Legend printed on the 144A Global Note and/or the Restricted Definitive Note and in the Indenture and the Securities Act.

B-1

2. o Check if Transferee will take delivery of a beneficial interest in the Regulation S Global Note or a Restricted Definitive Note pursuant to Regulation S . The Transfer is being effected pursuant to and in accordance with Rule 903 or Rule 904 under the Securities Act and, accordingly, the Transferor hereby further certifies that (i) the Transfer is not being made to a Person in the United States and (x) at the time the buy order was originated, the Transferee was outside the United States or such Transferor and any Person acting on its behalf reasonably believed and believes that the Transferee was outside the United States or (y) the transaction was executed in, on or through the facilities of a designated offshore securities market and neither such Transferor nor any Person acting on its behalf knows that the transaction was prearranged with a buyer in the United States, (ii) no directed selling efforts have been made in contravention of the requirements of Rule 903(b) or Rule 904(b) of Regulation S under the Securities Act, (iii) the transaction is not part of a plan or scheme to evade the registration requirements of the Securities Act and (iv) if the proposed transfer is being made prior to the expiration of the Restricted Period, the transfer is not being made to a U.S. Person or for the account or benefit of a U.S. Person (other than an Initial Purchaser). Upon consummation of the proposed transfer in accordance with the terms of the Indenture, the transferred beneficial interest or Definitive Note will be subject to the restrictions on transfer enumerated in the Private Placement Legend printed on the Regulation S Global Note and/or the Restricted Definitive Note and in the Indenture and the Securities Act.

3. o Check and complete if Transferee will take delivery of a beneficial interest in the IAI Global Note or a Restricted Definitive Note pursuant to any provision of the Securities Act other than Rule 144A or Regulation S . The Transfer is being effected in compliance with the transfer restrictions applicable to beneficial interests in Restricted Global Notes and Restricted Definitive Notes and pursuant to and in accordance with the Securities Act and any applicable blue sky securities laws of any state of the United States, and accordingly the Transferor hereby further certifies that (check one):

(a) o such Transfer is being effected pursuant to and in accordance with Rule 144 under the Securities Act;

(b) o such Transfer is being effected to the Parent, the Company or a subsidiary thereof;

(c) o such Transfer is being effected pursuant to an effective registration statement under the Securities Act and in compliance with the prospectus delivery requirements of the Securities Act;

(d) o such Transfer is being effected to an Institutional Accredited Investor and pursuant to an exemption from the registration requirements of the Securities Act other than Rule 144A, Rule 144, Rule 903 or Rule 904, and the Transferor hereby further certifies that it has not engaged in any general solicitation within the meaning of Regulation D under the Securities Act and the Transfer complies with the transfer

B-2

restrictions applicable to beneficial interests in a Restricted Global Note or Restricted Definitive Notes and the requirements of the exemption claimed, which certification is supported by (1) a certificate executed by the Transferee in the form of Exhibit D to the Indenture and (2) if such Transfer is in respect of a principal amount of Notes at the time of transfer of less than $100,000, an Opinion of Counsel provided by the Transferor or the Transferee (a copy of which the Transferor has attached to this certification), to the effect that such Transfer is in compliance with the Securities Act. Upon consummation of the proposed transfer in accordance with the terms of the Indenture, the transferred beneficial interest or Definitive Note will be subject to the restrictions on transfer enumerated in the Private Placement Legend printed on the IAI Global Note and/or the Restricted Definitive Notes and in the Indenture and the Securities Act.

4. o Check if Transferee will take delivery of a beneficial interest in an Unrestricted Global Note or of an Unrestricted Definitive Note .

(a) o Check if Transfer is pursuant to Rule 144 . (i) The Transfer is being effected pursuant to and in accordance with Rule 144 under the Securities Act and in compliance with the transfer restrictions contained in the Indenture and any applicable blue sky securities laws of any state of the United States and (ii) the restrictions on transfer contained in the Indenture and the Private Placement Legend are not required in order to maintain compliance with the Securities Act. Upon consummation of the proposed Transfer in accordance with the terms of the Indenture, the transferred beneficial interest or Definitive Note will no longer be subject to the restrictions on transfer enumerated in the Private Placement Legend printed on the Restricted Global Notes, on Restricted Definitive Notes and in the Indenture.

(b) o Check if Transfer is pursuant to Regulation S . (i) The Transfer is being effected pursuant to and in accordance with Rule 903 or Rule 904 under the Securities Act and in compliance with the transfer restrictions contained in the Indenture and any applicable blue sky securities laws of any state of the United States and, in the case of a transfer from a Restricted Global Note or a Restricted Definitive Note, the Transferor hereby further certifies that (a) the Transfer is not being made to a person in the United States and (x) at the time the buy order was originated, the Transferee was outside the United States or such Transferor and any Person acting on its behalf reasonably believed and believes that the Transferee was outside the United States or (y) the transaction was executed in, on or through the facilities of a designated offshore securities market and neither such Transferor nor any Person acting on its behalf knows that the transaction was prearranged with a buyer in the United States, (b) no directed selling efforts have been made in contravention of the requirements of Rule 903(b) or Rule 904(b) of Regulation S under the Securities Act, (c) the transaction is not part of a plan or scheme to evade the registration requirements of the Securities Act and (d) the transfer is not being made to a U.S. Person or for the account or benefit of a U.S. Person, and (ii) the restrictions on transfer contained in the Indenture and the Private Placement Legend are not required in order to maintain compliance with the Securities Act. Upon consummation of the proposed Transfer in accordance with the terms of the Indenture, the transferred beneficial interest or Definitive Note will no longer be subject to the restrictions on transfer enumerated in the Private Placement Legend printed on the Restricted Global Notes, on Restricted Definitive Notes and in the Indenture.

B-3

(c) o Check if Transfer is pursuant to other exemption . (i) The Transfer is being effected pursuant to and in compliance with an exemption from the registration requirements of the Securities Act other than Rule 144, Rule 903 or Rule 904 and in compliance with the transfer restrictions contained in the Indenture and any applicable blue sky securities laws of any State of the United States and (ii) the restrictions on transfer contained in the Indenture and the Private Placement Legend are not required in order to maintain compliance with the Securities Act. Upon consummation of the proposed Transfer in accordance with the terms of the Indenture, the transferred beneficial interest or Definitive Note will not be subject to the restrictions on transfer enumerated in the Private Placement Legend printed on the Restricted Global Notes or Restricted Definitive Notes and in the Indenture.

This certificate and the statements contained herein are made for your benefit and the benefit of the Company.


	[Insert Name of Transferor]
	By:
		Name:
Dated:		Title:

B-4

ANNEX A TO CERTIFICATE OF TRANSFER

The Transferor owns and proposes to transfer the following:

[CHECK ONE OF (a) OR (b)]

o a beneficial interest in the:

	(i)		o 144A Global Note (CUSIP 674215AA6), or

	(ii)		o Regulation S Global Note (CUSIP U65204AA4), or

	(iii)		o IAI Global Note (CUSIP 674215AB4); or

(b)

o a Restricted Definitive Note.

After the Transfer the Transferee will hold:

[CHECK ONE]

(a)

o a beneficial interest in the:

	(i)		o 144A Global Note (CUSIP 674215AA6), or

	(ii)		o Regulation S Global Note (CUSIP U65204AA4), or

	(iii)		o IAI Global Note (CUSIP 674215AB4); or

	(iv)		o Unrestricted Global Note (CUSIP 674215AC2); or

	(b)		o a Restricted Definitive Note; or

	(c)		o an Unrestricted Definitive Note,

in accordance with the terms of the Indenture.

B-5

EXHIBIT C

FORM OF CERTIFICATE OF EXCHANGE

Oasis Petroleum Inc.
First City Tower
1001 Fannin, Suite 1500
Houston, Texas 77002

U.S. Bank National Association
5555 San Felipe, Suite 1150
Houston, Texas 77056
Attention: Corporate Trust Services

Re: 7.25% Senior Notes due 2019

(CUSIP )

, (the “ Owner ”) owns and proposes to exchange the Note[s] or interest in such Note[s] specified herein, in the principal amount of $____________ in such Note[s] or interests (the “ Exchange ”). In connection with the Exchange, the Owner hereby certifies that:

1. Exchange of Restricted Definitive Notes or Beneficial Interests in a Restricted Global Note for Unrestricted Definitive Notes or Beneficial Interests in an Unrestricted Global Note

(a) o Check if Exchange is from beneficial interest in a Restricted Global Note to beneficial interest in an Unrestricted Global Note . In connection with the Exchange of the Owner’s beneficial interest in a Restricted Global Note for a beneficial interest in an Unrestricted Global Note in an equal principal amount, the Owner hereby certifies (i) the beneficial interest is being acquired for the Owner’s own account without transfer, (ii) such Exchange has been effected in compliance with the transfer restrictions applicable to the Global Notes and pursuant to and in accordance with the Securities Act of 1933, as amended (the “ Securities Act ”), (iii) the restrictions on transfer contained in the Indenture and the Private Placement Legend are not required in order to maintain compliance with the Securities Act and (iv) the beneficial interest in an Unrestricted Global Note is being acquired in compliance with any applicable blue sky securities laws of any state of the United States.

C-1

(b) o Check if Exchange is from beneficial interest in a Restricted Global Note to Unrestricted Definitive Note . In connection with the Exchange of the Owner’s beneficial interest in a Restricted Global Note for an Unrestricted Definitive Note, the Owner hereby certifies (i) the Definitive Note is being acquired for the Owner’s own account without transfer, (ii) such Exchange has been effected in compliance with the transfer restrictions applicable to the Restricted Global Notes and pursuant to and in accordance with the Securities Act, (iii) the restrictions on transfer contained in the Indenture and the Private Placement Legend are not required in order to maintain compliance with the Securities Act and (iv) the Definitive Note is being acquired in compliance with any applicable blue sky securities laws of any state of the United States.

(c) o Check if Exchange is from Restricted Definitive Note to beneficial interest in an Unrestricted Global Note . In connection with the Owner’s Exchange of a Restricted Definitive Note for a beneficial interest in an Unrestricted Global Note, the Owner hereby certifies (i) the beneficial interest is being acquired for the Owner’s own account without transfer, (ii) such Exchange has been effected in compliance with the transfer restrictions applicable to Restricted Definitive Notes and pursuant to and in accordance with the Securities Act, (iii) the restrictions on transfer contained in the Indenture and the Private Placement Legend are not required in order to maintain compliance with the Securities Act and (iv) the beneficial interest is being acquired in compliance with any applicable blue sky securities laws of any state of the United States.

(d) o Check if Exchange is from Restricted Definitive Note to Unrestricted Definitive Note . In connection with the Owner’s Exchange of a Restricted Definitive Note for an Unrestricted Definitive Note, the Owner hereby certifies (i) the Unrestricted Definitive Note is being acquired for the Owner’s own account without transfer, (ii) such Exchange has been effected in compliance with the transfer restrictions applicable to Restricted Definitive Notes and pursuant to and in accordance with the Securities Act, (iii) the restrictions on transfer contained in the Indenture and the Private Placement Legend are not required in order to maintain compliance with the Securities Act and (iv) the Unrestricted Definitive Note is being acquired in compliance with any applicable blue sky securities laws of any state of the United States.

2. Exchange of Restricted Definitive Notes or Beneficial Interests in Restricted Global Notes for Restricted Definitive Notes or Beneficial Interests in Restricted Global Notes

(a) o Check if Exchange is from beneficial interest in a Restricted Global Note to Restricted Definitive Note. In connection with the Exchange of the Owner’s beneficial interest in a Restricted Global Note for a Restricted Definitive Note with an equal principal amount, the Owner hereby certifies that the Restricted Definitive Note is being acquired for the Owner’s own account without transfer. Upon consummation of the proposed Exchange in accordance with the terms of the Indenture, the Restricted Definitive Note issued will continue to be subject to the restrictions on transfer enumerated in the Private Placement Legend printed on the Restricted Definitive Note and in the Indenture and the Securities Act.

(b) o Check if Exchange is from Restricted Definitive Note to beneficial interest in a Restricted Global Note . In connection with the Exchange of the Owner’s Restricted Definitive

C-2

Note for a beneficial interest in the [CHECK ONE] o 144A Global Note, o Regulation S Global Note, o IAI Global Note with an equal principal amount, the Owner hereby certifies (i) the beneficial interest is being acquired for the Owner’s own account without transfer and (ii) such Exchange has been effected in compliance with the transfer restrictions applicable to the Restricted Global Notes and pursuant to and in accordance with the Securities Act, and in compliance with any applicable blue sky securities laws of any state of the United States. Upon consummation of the proposed Exchange in accordance with the terms of the Indenture, the beneficial interest issued will be subject to the restrictions on transfer enumerated in the Private Placement Legend printed on the relevant Restricted Global Note and in the Indenture and the Securities Act.

This certificate and the statements contained herein are made for your benefit and the benefit of the Company.


	[Insert Name of Transferor]
	By:
		Name:
Dated:		Title:

C-3

EXHIBIT D

FORM OF CERTIFICATE FROM
ACQUIRING INSTITUTIONAL ACCREDITED INVESTOR

Oasis Petroleum Inc.
First City Tower
1001 Fannin, Suite 1500
Houston, Texas 77002

U.S. Bank National Association
5555 San Felipe, Suite 1150
Houston, Texas 77056
Attention: Corporate Trust Services

Re: 7.25% Senior Notes due 2019

(CUSIP )

In connection with our proposed purchase of $ aggregate principal amount of:

	(a)		o a beneficial interest in a Global Note, or

	(b)		o a Definitive Note,

we confirm that:

1. We understand that any subsequent transfer of the Notes or any interest therein is subject to certain restrictions and conditions set forth in the Indenture and the undersigned agrees to be bound by, and not to resell, pledge or otherwise transfer the Notes or any interest therein except in compliance with, such restrictions and conditions and the Securities Act of 1933, as amended (the “ Securities Act ”).

2. We understand that the offer and sale of the Notes have not been registered under the Securities Act, and that the Notes and any interest therein may not be offered or sold except as permitted in the following sentence. We agree, on our own behalf and on behalf of any accounts for which we are acting as hereinafter stated, that if we should sell the Notes or any

D-1

interest therein, we will do so only (A) to the Company or any subsidiary thereof, (B) in accordance with Rule 144A under the Securities Act to a “qualified institutional buyer” (as defined therein), (C) to an institutional “accredited investor” (as defined below) that, prior to such transfer, furnishes (or has furnished on its behalf by a U.S. broker-dealer) to you and to the Company a signed letter substantially in the form of this letter and, if such transfer is in respect of a principal amount of Notes, at the time of transfer of less than $100,000, an Opinion of Counsel in form reasonably acceptable to the Company to the effect that such transfer is in compliance with the Securities Act, (D) outside the United States in accordance with Rule 904 of Regulation S under the Securities Act, (E) pursuant to the provisions of Rule 144 under the Securities Act or (F) pursuant to an effective registration statement under the Securities Act, and we further agree to provide to any Person purchasing the Definitive Note or beneficial interest in a Global Note from us in a transaction meeting the requirements of clauses (A) through (E) of this paragraph a notice advising such purchaser that resales thereof are restricted as stated herein.

3. We understand that, on any proposed resale of the Notes or beneficial interest therein, we will be required to furnish to you and the Company such certifications, legal opinions and other information as you and the Company may reasonably require to confirm that the proposed sale complies with the foregoing restrictions. We further understand that the Notes purchased by us will bear a legend to the foregoing effect.

4. We are an institutional “accredited investor” (as defined in Rule 501(a)(1), (2), (3) or (7) of Regulation D under the Securities Act) and have such knowledge and experience in financial and business matters as to be capable of evaluating the merits and risks of our investment in the Notes, and we and any accounts for which we are acting are each able to bear the economic risk of our or its investment.

5. We are acquiring the Notes or beneficial interest therein purchased by us for our own account or for one or more accounts (each of which is an institutional “accredited investor”) as to each of which we exercise sole investment discretion.

The Trustee and the Company are entitled to rely upon this letter and are irrevocably authorized to produce this letter or a copy hereof to any interested party in any administrative or legal proceedings or official inquiry with respect to the matters covered hereby.


	[Insert Name of Accredited Investor]
	By:
		Name:
Dated:		Title:

D-2

EXHIBIT E

[FORM OF SUPPLEMENTAL INDENTURE
TO BE DELIVERED BY SUBSEQUENT SUBSIDIARY GUARANTORS]

Supplemental Indenture (this “ Supplemental Indenture ”), dated as of , 20 , among (the “ Guaranteeing Subsidiary ”), a subsidiary of Oasis Petroleum Inc., a Delaware corporation (or its permitted successor, the “ Company ”), the Company, the existing Subsidiary Guarantors (as defined in the Indenture referred to herein), if any, and U.S. Bank National Association, as trustee under the Indenture referred to below (or its permitted successor, the “ Trustee ”).

WITNESSETH

WHEREAS, the Company has heretofore executed and delivered to the Trustee an Indenture, dated as of February 2, 2011, by and between the Company and the Trustee, as amended and supplemented by the First Supplemental Indenture thereto, dated as of February 2, 2011, by and among the Company, the Subsidiary Guarantors parties thereto and the Trustee (the “ Indenture ”), providing for the issuance of the Company’s 7.25% Senior Notes due 2019 (the “ Notes ”);

WHEREAS, the Indenture provides that under certain circumstances the Guaranteeing Subsidiary shall execute and deliver to the Trustee a supplemental indenture pursuant to which the Guaranteeing Subsidiary shall become a Subsidiary Guarantor (as defined in the Indenture); and

WHEREAS, pursuant to Section 9.1 of the Indenture, the Trustee is authorized to execute and deliver this First Supplemental Indenture.

NOW, THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged, the Guaranteeing Subsidiary, the Company, the other Subsidiary Guarantors (if any) and the Trustee mutually covenant and agree for the equal and ratable benefit of the Holders of the Notes as follows:

1. Capitalized Terms . Capitalized terms used herein without definition shall have the meanings assigned to them in the Indenture.

2. Agreement to Guarantee . The Guaranteeing Subsidiary hereby agrees to provide an unconditional Guarantee on the terms and subject to the conditions set forth in the Indenture including but not limited to Article Fourteen thereof.

3. Execution And Delivery . The Subsidiary Guarantee shall remain in full force and effect notwithstanding any failure to endorse on each Note a notation of such Subsidiary Guarantee.

4. No Recourse Against Others . No past, present or future director, officer, employee, incorporator, stockholder, member, manager or partner of the Guaranteeing Subsidiary, as such, shall have any liability for any obligations of the Company or the Guaranteeing Subsidiary under the Notes, the Subsidiary Guarantee, the Indenture or this First Supplemental Indenture or for any claim based on, in respect of, or by reason of, such

E-1

obligations or their creation. Each Holder of the Notes by accepting a Note waives and releases all such liability. The waiver and release are part of the consideration for issuance of the Notes.

5. NEW YORK LAW TO GOVERN. THE LAW OF THE STATE OF NEW YORK WILL GOVERN AND BE USED TO CONSTRUE AND ENFORCE THIS FIRST SUPPLEMENTAL INDENTURE.

6. Counterparts . The parties may sign any number of copies of this First Supplemental Indenture. Each signed copy shall be an original, but all of them together represent the same agreement.

7. Effect of Headings . The Section headings herein are for convenience only and shall not affect the construction hereof.

8. The Trustee . The Trustee shall not be responsible in any manner whatsoever for or in respect of the validity or sufficiency of this First Supplemental Indenture or for or in respect of the recitals contained herein, all of which recitals are made solely by the Guaranteeing Subsidiary and the Company.

[SIGNATURE PAGE FOLLOWS]

E-2

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


Dated: , 20
	[ Guaranteeing Subsidiary ]
	By:
		Name:
		Title:

	[ Company ]
	By:
		Name:
		Title:

	[ Existing Subsidiary Guarantors, if any ]
	By:
		Name:
		Title:

	[ Trustee ], as Trustee
	By:
		Authorized Signatory

E-3

Exhibit 4.3

$400,000,000

OASIS PETROLEUM INC.

7.25% Senior Notes due 2019

Registration Rights Agreement

This REGISTRATION RIGHTS AGREEMENT dated February 2, 2011 (the “ Agreement ”) is entered into by and among Oasis Petroleum Inc., a Delaware corporation (the “ Company ”), Oasis Petroleum LLC, a Delaware limited liability company, and Oasis Petroleum North America, LLC, a Delaware limited liability company (the “ Guarantors ”), and J.P. Morgan Securities LLC (“ J.P. Morgan ”), Wells Fargo Securities, LLC, BNP Paribas Securities Corp., UBS Securities LLC, Johnson Rice & Company L.L.C., Morgan Keegan & Company, Inc., RBS Securities Inc., and Tudor, Pickering, Holt & Co. Securities, Inc. (collectively, the “ Initial Purchasers ”).

The Company, the Guarantors and the Initial Purchasers are parties to the Purchase Agreement dated January 28, 2011 (the “ Purchase Agreement ”), which provides for the sale by the Company to the Initial Purchasers of $400,000,000 aggregate principal amount of the Company’s 7.25% Senior Notes due 2019 (the “ Securities ”) which will be guaranteed on an unsecured senior basis by each of the Guarantors. As an inducement to the Initial Purchasers to enter into the Purchase Agreement, the Company and the Guarantors have agreed to provide to the Initial Purchasers and their direct and indirect transferees the registration rights set forth in this Agreement. The execution and delivery of this Agreement is a condition to the closing under the Purchase Agreement.

In consideration of the foregoing, the parties hereto agree as follows:

1. Definitions . As used in this Agreement, the following terms shall have the following meanings:

“ Additional Guarantor ” shall mean any subsidiary of the Company that executes a Subsidiary Guarantee under the Indenture after the date of this Agreement.

“ Business Day ” shall mean any day that is not a Saturday, Sunday or other day on which commercial banks in New York City are authorized or required by law to remain closed.

“ Company ” shall have the meaning set forth in the preamble and shall also include the Company’s successors.

“ Exchange Act ” shall mean the Securities Exchange Act of 1934, as amended from time to time.

“ Exchange Dates ” shall have the meaning set forth in Section 2(a)(ii) hereof.

“ Exchange Offer ” shall mean the exchange offer by the Company and the Guarantors of Exchange Securities for Registrable Securities pursuant to Section 2(a) hereof.

“ Exchange Offer Registration ” shall mean a registration under the Securities Act effected pursuant to Section 2(a) hereof.

“ Exchange Offer Registration Statement ” shall mean an exchange offer registration statement on Form S-4 (or, if applicable, on another appropriate form) and all amendments and supplements to such registration statement, in each case including the Prospectus contained therein or deemed a part thereof, all exhibits thereto and any document incorporated by reference therein.

“ Exchange Securities ” shall mean senior notes issued by the Company and guaranteed by the Guarantors under the Indenture containing terms identical to the Securities (except that the Exchange Securities will not be subject to restrictions on transfer or to any increase in annual interest rate for failure to comply with this Agreement) and to be offered to Holders of Securities in exchange for Securities pursuant to the Exchange Offer.

“ FINRA ” means the Financial Industry Regulatory Authority, Inc.

“ Free Writing Prospectus ” means each free writing prospectus (as defined in Rule 405 under the Securities Act) prepared by or on behalf of the Company or used or referred to by the Company in connection with the sale of the Securities or the Exchange Securities.

“ Guarantors ” shall have the meaning set forth in the preamble and shall also include any Guarantor’s successors that guarantee the Securities and any Additional Guarantors.

“ Holders ” shall mean the Initial Purchasers, for so long as they own any Registrable Securities, and each of their successors, assigns and direct and indirect transferees who become owners of Registrable Securities under the Indenture; provided that for purposes of Sections 4 and 5 of this Agreement, the term “ Holders ” shall include Participating Broker-Dealers.

“ Indemnified Person ” shall have the meaning set forth in Section 5(c) hereof.

“ Indemnifying Person ” shall have the meaning set forth in Section 5(c) hereof.

“ Indenture ” shall mean the Indenture dated as of February 2, 2011 among the Company and U.S. Bank National Association, as trustee, as amended and supplemented by the First Supplemental Indenture relating to the Securities dated as of February 2, 2011 among the Company, the Guarantors and U.S. Bank National Association, as trustee, and as the same may be further amended from time to time in accordance with the terms thereof.

“ Initial Purchasers ” shall have the meaning set forth in the preamble.

“ Inspector ” shall have the meaning set forth in Section 3(a)(xiv) hereof.

“ Issuer Information ” shall have the meaning set forth in Section 5(a) hereof.

“ J.P. Morgan ” shall have the meaning set forth in the preamble.

“ Majority Holders ” shall mean the Holders of a majority of the aggregate principal amount of the outstanding Registrable Securities; provided that whenever the consent or approval of Holders of a specified percentage of Registrable Securities is required hereunder, any Registrable Securities owned directly or indirectly by the Company or any of its affiliates shall not be counted in determining whether such consent or approval was given by the Holders of such required percentage or amount; and provided , further , that if the Company shall issue any additional Securities under the Indenture prior to consummation of the Exchange Offer or, if applicable, the effectiveness of any Shelf Registration Statement, such additional Securities and the Registrable Securities to which this Agreement relates shall be treated together as one class for purposes of determining whether the consent or approval of Holders of a specified percentage of Registrable Securities has been obtained.

“ Notice and Questionnaire ” shall mean a notice of registration statement and selling security holder questionnaire distributed to a Holder by the Company upon receipt of a Shelf Request from such Holder.

“ Participating Broker-Dealers ” shall have the meaning set forth in Section 4(a) hereof.

“ Participating Holder ” shall mean any Holder of Registrable Securities that has returned a completed and signed Notice and Questionnaire to the Company in accordance with Section 2(b) hereof.

“ Person ” shall mean an individual, partnership, limited liability company, corporation, trust or unincorporated organization, or a government or agency or political subdivision thereof.

“ Prospectus ” shall mean the prospectus included in, or, pursuant to the rules and regulations of the Securities Act, deemed a part of, a Registration Statement, including any preliminary prospectus, and any such prospectus as amended or supplemented by any prospectus supplement, including a prospectus supplement with respect to the terms of the offering of any portion of the Registrable Securities covered by a Shelf Registration Statement, and by all other amendments and supplements to such prospectus, and in each case including any document incorporated by reference therein.

“ Purchase Agreement ” shall have the meaning set forth in the preamble.

“ Registrable Securities ” shall mean the Securities; provided that the Securities shall cease to be Registrable Securities (i) when a Registration Statement with respect to such Securities has become effective under the Securities Act and such Securities have been exchanged or disposed of pursuant to such Registration Statement or (ii) when such Securities cease to be outstanding.

“ Registration Expenses ” shall mean any and all expenses incident to performance of or compliance by the Company and the Guarantors with this Agreement, including without limitation: (i) all SEC, stock exchange or FINRA registration and filing fees, (ii) all fees and expenses incurred in connection with compliance with state securities or blue sky laws (including reasonable fees and disbursements of counsel for any Underwriters or Holders in connection with blue sky qualification of any Exchange Securities or Registrable Securities), (iii)

all expenses of any Persons in preparing or assisting in preparing, word processing, printing and distributing any Registration Statement, any Prospectus, any Free Writing Prospectus and any amendments or supplements thereto, any underwriting agreements, securities sales agreements or other similar agreements and any other documents relating to the performance of and compliance with this Agreement, (iv) all rating agency fees, (v) all fees and disbursements relating to the qualification of the Indenture under applicable securities laws, (vi) the fees and disbursements of the Trustee and its counsel, (vii) the fees and disbursements of counsel for the Company and the Guarantors and, in the case of a Shelf Registration Statement, the fees and disbursements of one counsel for the Participating Holders (which counsel shall be selected by the Participating Holders holding a majority of the aggregate principal amount of Registrable Securities held by such Participating Holders and which counsel may also be counsel for the Initial Purchasers) and (viii) the fees and disbursements of the independent public accountants and independent petroleum engineers of the Company and the Guarantors, including the expenses of any special audits, “comfort” letters or letters concerning oil and gas reserve estimates, as applicable, required by or incident to the performance of and compliance with this Agreement, but excluding fees and expenses of counsel to the Underwriters (other than fees and expenses set forth in clause (ii) above) or the Holders and underwriting discounts and commissions, brokerage commissions and transfer taxes, if any, relating to the sale or disposition of Registrable Securities by a Holder.

“ Registration Statement ” shall mean any registration statement filed under the Securities Act of the Company and the Guarantors that covers any of the Exchange Securities or Registrable Securities pursuant to the provisions of this Agreement and all amendments and supplements to any such registration statement, including post-effective amendments, in each case including the Prospectus contained therein or deemed a part thereof, all exhibits thereto and any document incorporated by reference therein.

“ SEC ” shall mean the United States Securities and Exchange Commission.

“ Securities ” shall have the meaning set forth in the preamble.

“ Securities Act ” shall mean the Securities Act of 1933, as amended from time to time.

“ Shelf Effectiveness Period ” shall have the meaning set forth in Section 2(b) hereof.

“ Shelf Registration ” shall mean a registration effected pursuant to Section 2(b) hereof.

“ Shelf Registration Statement ” shall mean a “shelf” registration statement of the Company and the Guarantors that covers all or a portion of the Registrable Securities (but no other securities unless approved by a majority in aggregate principal amount of the Registrable Securities held by the Participating Holders) on an appropriate form under Rule 415 under the Securities Act, or any similar rule that may be adopted by the SEC, and all amendments and supplements to such registration statement, including post-effective amendments, in each case including the Prospectus contained therein or deemed a part thereof, all exhibits thereto and any document incorporated by reference therein.

“ Shelf Request ” shall have the meaning set forth in Section 2(b) hereof.

“ Subsidiary Guarantees ” shall mean the guarantees of the Securities and Exchange Securities by the Guarantors under the Indenture.

“ Staff ” shall mean the staff of the SEC.

“ Trust Indenture Act ” shall mean the Trust Indenture Act of 1939, as amended from time to time.

“ Trustee ” shall mean the trustee with respect to the Securities under the Indenture.

“ Underwriter ” shall have the meaning set forth in Section 3(e) hereof.

“ Underwritten Offering ” shall mean an offering in which Registrable Securities are sold to an Underwriter for reoffering to the public.

2. Registration Under the Securities Act . (a) To the extent not prohibited by any applicable law or applicable interpretations of the Staff, the Company and the Guarantors shall use commercially reasonable efforts to (i) cause to be filed an Exchange Offer Registration Statement covering an offer to the Holders to exchange all the Registrable Securities for Exchange Securities and (ii) have such Registration Statement remain effective until 180 days after the last Exchange Date for use by one or more Participating Broker-Dealers. The Company and the Guarantors shall commence the Exchange Offer promptly after the Exchange Offer Registration Statement is declared effective by the SEC and use commercially reasonable efforts to complete the Exchange Offer not later than 60 days after such effective date.

The Company and the Guarantors shall commence the Exchange Offer by mailing or making available the related Prospectus, appropriate letters of transmittal and other accompanying documents to each Holder stating, in addition to such other disclosures as are required by applicable law, substantially the following:

	(i)		that the Exchange Offer is being made pursuant to this Agreement and that all Registrable Securities validly tendered and not properly withdrawn will be accepted for exchange;

	(ii)		the dates of acceptance for exchange (which shall be a period of at least 20 Business Days from the date such notice is mailed or made available) (the “ Exchange Dates ”);

	(iii)		that any Registrable Security not tendered will remain outstanding and continue to accrue interest but will not retain any rights under this Agreement, except as otherwise specified herein;

	(iv)		that any Holder electing to have a Registrable Security exchanged pursuant to the Exchange Offer will be required to (A) surrender such Registrable Security, together with the appropriate letters of transmittal, to the institution and at the address and in the manner specified in the notice, or (B) effect such exchange otherwise in compliance with the applicable procedures of the depositary for such

			Registrable Security, in each case prior to the close of business on the last Exchange Date; and

	(v)		that any Holder will be entitled to withdraw its election, not later than the close of business on the last Exchange Date, by (A) sending to the institution and at the address specified in the notice, a telegram, facsimile transmission or letter setting forth the name of such Holder, the principal amount of Registrable Securities delivered for exchange and a statement that such Holder is withdrawing its election to have such Securities exchanged or (B) effecting such withdrawal in compliance with the applicable procedures of the depositary for the Registrable Securities.

As a condition to participating in the Exchange Offer, a Holder will be required to represent to the Company and the Guarantors that (i) any Exchange Securities to be received by it will be acquired in the ordinary course of its business, (ii) at the time of the commencement of the Exchange Offer it has no arrangement or understanding with any Person to participate in the distribution (within the meaning of the Securities Act) of the Exchange Securities in violation of the provisions of the Securities Act, (iii) it is not an “affiliate” (within the meaning of Rule 405 under the Securities Act) of the Company or any Guarantor and (iv) if such Holder is a broker-dealer that will receive Exchange Securities for its own account in exchange for Registrable Securities that were acquired as a result of market-making or other trading activities, then such Holder will deliver a Prospectus (or, to the extent permitted by law, make available a Prospectus to purchasers) in connection with any resale of such Exchange Securities.

As soon as practicable after the last Exchange Date, the Company and the Guarantors shall:

	(i)		accept for exchange Registrable Securities or portions thereof validly tendered and not properly withdrawn pursuant to the Exchange Offer; and

	(ii)		deliver, or cause to be delivered, to the Trustee for cancellation all Registrable Securities or portions thereof so accepted for exchange by the Company and issue, and cause the Trustee to promptly authenticate and deliver to each Holder, Exchange Securities equal in principal amount to the principal amount of the Registrable Securities tendered by such Holder.

The Company and the Guarantors shall use commercially reasonable efforts to complete the Exchange Offer as provided above and shall comply with the applicable requirements of the Securities Act, the Exchange Act and other applicable laws and regulations in connection with the Exchange Offer. The Exchange Offer shall not be subject to any conditions, other than that the Exchange Offer does not violate any applicable law or applicable interpretations of the Staff.

(b) In the event that (i) the Company and the Guarantors determine that the Exchange Offer Registration provided for in Section 2(a) above is not available or the Exchange Offer may not be completed as soon as practicable after the last Exchange Date because it would violate any applicable law or applicable interpretations of the Staff, (ii) the Exchange Offer is not for any other reason completed by January 28, 2012 or (iii) any Initial Purchaser shall so request

in connection with any offer or sale of Registrable Securities (a “ Shelf Request ”), the Company and the Guarantors shall use commercially reasonable efforts to cause to be filed as soon as practicable after such determination, date or Shelf Request, as the case may be, a Shelf Registration Statement providing for the sale of all the Registrable Securities by the Holders thereof and to have such Shelf Registration Statement become effective; provided that no Holder will be entitled to have any Registrable Securities included in any Shelf Registration Statement, or entitled to use the prospectus forming a part of such Shelf Registration Statement, until such Holder shall have delivered a completed and signed Notice and Questionnaire and provided such other information regarding such Holder to the Company as is contemplated by Section 3(b) hereof.

In the event that the Company and the Guarantors are required to file a Shelf Registration Statement pursuant to clause (iii) of the preceding sentence, the Company and the Guarantors shall use commercially reasonable efforts to file and have declared effective by the SEC (or file and become effective automatically, as the case may be) both an Exchange Offer Registration Statement pursuant to Section 2(a) above with respect to all Registrable Securities and a Shelf Registration Statement (which may be a combined Registration Statement with the Exchange Offer Registration Statement) with respect to offers and sales of Registrable Securities held by the Initial Purchasers after completion of the Exchange Offer.

The Company and the Guarantors agree to use commercially reasonable efforts to keep the Shelf Registration Statement continuously effective until the earlier of one year following the effective date of the Shelf Registration Statement and such time as all the Registrable Securities covered by the Shelf Registration Statement have been sold pursuant to the Shelf Registration Statement (the “ Shelf Effectiveness Period ”). The Company and the Guarantors further agree to supplement or amend the Shelf Registration Statement, the related Prospectus and any Free Writing Prospectus if required by the rules, regulations or instructions applicable to the registration form used by the Company for such Shelf Registration Statement or by the Securities Act or by any other rules and regulations thereunder or if reasonably requested by a Participating Holder with respect to information relating to such Holder, and, to the extent necessary, to use commercially reasonable efforts to cause any such amendment to become effective and such Shelf Registration Statement, Prospectus or Free Writing Prospectus, as the case may be, to become usable as soon as thereafter practicable. The Company and the Guarantors agree to furnish to the Participating Holders copies of any such supplement or amendment promptly after its being used or filed with the SEC.

(c) The Company and the Guarantors shall pay all Registration Expenses in connection with any registration pursuant to Section 2(a) or Section 2(b) hereof. Each Holder shall pay all underwriting discounts and commissions, brokerage commissions and transfer taxes, if any, relating to the sale or disposition of such Holder’s Registrable Securities pursuant to the Shelf Registration Statement.

(d) An Exchange Offer Registration Statement pursuant to Section 2(a) hereof will not be deemed to have become effective unless it has been declared effective by the SEC. A Shelf Registration Statement pursuant to Section 2(b) hereof will not be deemed to have become effective unless it has been declared effective by the SEC or is automatically effective upon filing with the SEC as provided by Rule 462 under the Securities Act.

In the event that either the Exchange Offer is not completed or the Shelf Registration Statement, if required hereby, is not declared effective (or does not automatically become effective) on or prior to January 28, 2012, the Company will pay liquidated damages to Holders of Registrable Securities with the effect that the interest rate on the Registrable Securities will be increased by 1.00% per annum until the Exchange Offer is completed or the Shelf Registration Statement, if required hereby, is declared effective by the SEC (or becomes automatically effective). All liquidated damages will be paid by the Company on the next scheduled interest payment date in the same manner as interest is paid on the Securities under the Indenture.

If the Shelf Registration Statement, if required hereby, has been declared effective or automatically becomes effective, as the case may be, and thereafter either ceases to be effective or the Prospectus contained therein ceases to be usable at any time during the Shelf Effectiveness Period, and such failure to remain effective or usable exists for more than 30 days (whether or not consecutive) in any 12-month period, unless such failure to remain effective or usable relates or is directly attributable to an acquisition or disposition being undertaken by the Company then the Company will pay liquidated damages to the Holders of Registrable Securities with the effect that the interest rate on the Registrable Securities will be increased by 1.00% per annum commencing on the 31st day in such 12-month period and ending on such date that the Shelf Registration Statement has again been declared (or automatically becomes) effective or the Prospectus again becomes usable.

(e) Without limiting the remedies available to the Initial Purchasers and the Holders, the Company and the Guarantors acknowledge that any failure by the Company or the Guarantors to comply with their obligations under Section 2(a) and Section 2(b) hereof may result in material irreparable injury to the Initial Purchasers or the Holders for which there is no adequate remedy at law, that it will not be possible to measure damages for such injuries precisely and that, in the event of any such failure, the Initial Purchasers or any Holder may obtain such relief as may be required to specifically enforce the Company’s and the Guarantors’ obligations under Section 2(a) and Section 2(b) hereof. The provisions for liquidated damages set forth in Section 2(d) above shall be the only monetary remedy available to the Holders under this Agreement.

3. Registration Procedures . (a) In connection with their obligations pursuant to Section 2(a) and Section 2(b) hereof, the Company and the Guarantors shall as expeditiously as possible:

(i)

prepare and file with the SEC a Registration Statement on the appropriate form under the Securities Act, which form (x) shall be selected by the Company and the Guarantors, (y) shall, in the case of a Shelf Registration, be available for the sale of the Registrable Securities by the Participating Holders thereof and (z) shall comply as to form in all material respects with the requirements of the applicable form and include all financial statements and oil and gas reserve information required by the SEC to be filed therewith; and use commercially reasonable efforts to cause such Registration Statement to become effective and remain effective for the applicable period in accordance with Section 2 hereof;

	(ii)		prepare and file with the SEC such amendments and post-effective amendments to each Registration Statement as may be necessary to keep such Registration Statement effective for the applicable period in accordance with Section 2 hereof and cause each Prospectus to be supplemented by any required prospectus supplement and, as so supplemented, to be filed pursuant to Rule 424 under the Securities Act; and keep each Prospectus current during the period described in Section 4(3) of and Rule 174 under the Securities Act that is applicable to transactions by brokers or dealers with respect to the Registrable Securities or Exchange Securities;

	(iii)		to the extent any Free Writing Prospectus is used, file with the SEC any Free Writing Prospectus that is required to be filed by the Company or the Guarantors with the SEC in accordance with the Securities Act and to retain any Free Writing Prospectus not required to be filed;

	(iv)		in the case of a Shelf Registration, furnish to each Participating Holder, to counsel for the Initial Purchasers, to counsel for such Participating Holders and to each Underwriter of an Underwritten Offering of Registrable Securities, if any, without charge, as many copies of each Prospectus, including each preliminary prospectus or Free Writing Prospectus, and any amendment or supplement thereto, as such Participating Holder, counsel or Underwriter may reasonably request in order to facilitate the sale or other disposition of the Registrable Securities thereunder; and, subject to Section 3(c) below, the Company and the Guarantors’ consent to the use of such Prospectus, preliminary prospectus or such Free Writing Prospectus and any amendment or supplement thereto in accordance with applicable law by each of the Participating Holders and any such Underwriters in connection with the offering and sale of the Registrable Securities covered by and in the manner described in such Prospectus, preliminary prospectus or such Free Writing Prospectus or any amendment or supplement thereto in accordance with applicable law;

	(v)		use commercially reasonable efforts to register or qualify the Registrable Securities under all applicable state securities or blue sky laws of such jurisdictions as any Participating Holder shall reasonably request in writing by the time the applicable Registration Statement becomes effective; cooperate with such Participating Holders in connection with any filings required to be made with FINRA, and do any and all other acts and things that may be reasonably necessary or advisable to enable each Participating Holder to complete the disposition in each such jurisdiction of the Registrable Securities owned by such Participating Holder; provided that neither the Company nor any Guarantor shall be required to (1) qualify as a foreign corporation or other entity or as a dealer in securities in any such jurisdiction where it would not otherwise be required to so qualify, (2) file any general consent to service of process in any such jurisdiction or (3) subject itself to taxation in any such jurisdiction if it is not so subject;

	(vi)		notify counsel for the Initial Purchasers and, in the case of a Shelf Registration, notify each Participating Holder and counsel for such Participating Holders

			promptly and, if requested by any such Participating Holder or counsel, confirm such advice in writing (1) when a Registration Statement has become effective, when any post-effective amendment thereto has been filed and becomes effective, when any Free Writing Prospectus has been filed or any amendment or supplement to the Prospectus or any Free Writing Prospectus has been filed, (2) of any request by the SEC or any state securities authority for amendments and supplements to a Registration Statement, Prospectus or any Free Writing Prospectus or for additional information after the Registration Statement has become effective, (3) of the issuance by the SEC or any state securities authority of any stop order suspending the effectiveness of a Registration Statement or the initiation of any proceedings for that purpose, including the receipt by the Company of any notice of objection of the SEC to the use of a Shelf Registration Statement or any post-effective amendment thereto pursuant to Rule 401(g)(2) under the Securities Act, (4) if, between the applicable effective date of a Shelf Registration Statement and the closing of any sale of Registrable Securities covered thereby, the representations and warranties of the Company or any Guarantor contained in any underwriting agreement, securities sales agreement or other similar agreement, if any, relating to an offering of such Registrable Securities cease to be true and correct in all material respects or if the Company or any Guarantor receives any notification with respect to the suspension of the qualification of the Registrable Securities for sale in any jurisdiction or the initiation of any proceeding for such purpose, (5) of the happening of any event during the period a Registration Statement is effective that makes any statement made in such Registration Statement or the related Prospectus or any Free Writing Prospectus untrue in any material respect or that requires the making of any changes in such Registration Statement or Prospectus or any Free Writing Prospectus in order to make the statements therein, in the light of the circumstances in which they were made in the case of the Prospectus or any Free Writing Prospectus, not misleading and (6) of any determination by the Company or any Guarantor that a post-effective amendment to a Registration Statement or any amendment or supplement to the Prospectus or any Free Writing Prospectus would be appropriate;

	(vii)		use commercially reasonable efforts to obtain the withdrawal of any order suspending the effectiveness of a Registration Statement or, in the case of a Shelf Registration, the resolution of any objection of the SEC pursuant to Rule 401(g)(2) under the Securities Act, including by filing an amendment to such Registration Statement on the proper form, at the earliest practicable moment and provide immediate notice to each Holder or Participating Holder of the withdrawal of any such order or such resolution;

	(viii)		in the case of a Shelf Registration, furnish or make available to each Participating Holder, without charge, at least one conformed copy of each Registration Statement and any post-effective amendment thereto (without any documents incorporated therein by reference or exhibits thereto, unless requested);

	(ix)		in the case of a Shelf Registration, cooperate with the Participating Holders to facilitate the timely preparation and delivery of certificates representing Registrable Securities to be sold and not bearing any restrictive legends and enable such Registrable Securities to be issued in such denominations and registered in such names (consistent with the provisions of the Indenture) as such Participating Holders may reasonably request at least one Business Day prior to the closing of any sale of Registrable Securities;

	(x)		upon the occurrence of any event contemplated by Section 3(a)(vi)(5) hereof, use commercially reasonable efforts to prepare and file with the SEC a supplement or post-effective amendment to the Exchange Offer Registration Statement or Shelf Registration Statement or the related Prospectus or any Free Writing Prospectus or any document incorporated therein by reference or file any other required document so that, as thereafter delivered (or, to the extent permitted by law, made available) to purchasers of the Registrable Securities, such Prospectus or Free Writing Prospectus, as the case may be, will not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading; and the Company and the Guarantors shall notify the Participating Holders (in the case of a Shelf Registration Statement) and the Initial Purchasers and any Participating Broker-Dealers known to the Company (in the case of the Exchange Offer Registration Statement) to suspend use of the Prospectus or any Free Writing Prospectus as promptly as practicable after the occurrence of such an event, and such Participating Holders, such Participating Broker-Dealers and the Initial Purchasers, as applicable, hereby agree to suspend use of the Prospectus or any Free Writing Prospectus, as the case may be, until the Company and the Guarantors have amended or supplemented the Prospectus or the Free Writing Prospectus, as the case may be, to correct such misstatement or omission; provided that the obligations under this Section 3(a)(x ) with respect to the Exchange Offer Registration Statement shall terminate at the end of the period set forth in Section 2(a)(ii ) of this Agreement;

	(xi)		a reasonable time prior to the filing of any Registration Statement, any Prospectus, any Free Writing Prospectus, any amendment to a Registration Statement or amendment or supplement to a Prospectus or a Free Writing Prospectus, provide copies of such document to the Initial Purchasers and their counsel (and, in the case of a Shelf Registration Statement, to the Participating Holders and their counsel) and make such of the representatives of the Company and the Guarantors as shall be reasonably requested by the Initial Purchasers or their counsel (and, in the case of a Shelf Registration Statement, the Participating Holders or their counsel) available for discussion of such document; and the Company and the Guarantors shall not, at any time after initial filing of a Registration Statement, use or file any Prospectus, any Free Writing Prospectus, any amendment of or supplement to a Registration Statement, a Prospectus or a Free Writing Prospectus, of which the Initial Purchasers and their counsel (and, in the case of a Shelf Registration Statement, the Participating Holders and their counsel) shall not have previously been advised and furnished a copy or to which

			the Initial Purchasers or their counsel (and, in the case of a Shelf Registration Statement, the Participating Holders or their counsel) shall reasonably object;

	(xii)		obtain a CUSIP number for all Exchange Securities or Registrable Securities, as the case may be, not later than the initial effective date of a Registration Statement;

	(xiii)		cause the Indenture to be qualified under the Trust Indenture Act in connection with the registration of the Exchange Securities or Registrable Securities, as the case may be; cooperate with the Trustee and the Holders to effect such changes to the Indenture as may be required for the Indenture to be so qualified in accordance with the terms of the Trust Indenture Act; and execute, and use commercially reasonable efforts to cause the Trustee to execute, all documents as may be required to effect such changes and all other forms and documents required to be filed with the SEC to enable the Indenture to be so qualified in a timely manner;

	(xiv)		in the case of a Shelf Registration, make available for inspection by a representative of the Participating Holders (an “ Inspector ”), any Underwriter participating in any disposition pursuant to such Shelf Registration Statement, any attorneys and accountants designated by a majority in aggregate principal amount of the Registrable Securities held by the Participating Holders and any attorneys and accountants designated by such Underwriter, at reasonable times and in a reasonable manner, all pertinent financial and other records, documents and properties of the Company and its subsidiaries, and cause the respective officers, directors and employees of the Company and the Guarantors to supply all information reasonably requested by any such Inspector, Underwriter, attorney or accountant in connection with a Shelf Registration Statement; provided that if any such information is identified by the Company or any Guarantor as being confidential or proprietary, each Person receiving such information shall take such actions as are reasonably necessary to protect the confidentiality of such information to the extent such action is otherwise not inconsistent with, an impairment of or in derogation of the rights and interests of any Inspector, Participating Holder or Underwriter;

	(xv)		if reasonably requested by any Participating Holder, promptly include in a Prospectus supplement or post-effective amendment such information with respect to such Participating Holder as such Participating Holder reasonably requests to be included therein and make all required filings of such Prospectus supplement or such post-effective amendment as soon as the Company has received notification of the matters to be so included in such filing;

	(xvi)		in the case of a Shelf Registration, enter into such customary agreements and take all such other commercially reasonable actions in connection therewith (including those requested by the Participating Holders of a majority in principal amount of the Registrable Securities covered by the Shelf Registration Statement) in order to expedite or facilitate the disposition of such Registrable Securities including, but

not limited to, an Underwritten Offering and in such connection, (1) to the extent possible, make such representations and warranties to the Participating Holders and any Underwriters of such Registrable Securities with respect to the business of the Company and its subsidiaries and the Registration Statement, Prospectus, any Free Writing Prospectus and documents incorporated by reference or deemed incorporated by reference, if any, in each case, in form, substance and scope as are customarily made by issuers to underwriters in underwritten offerings and confirm the same if and when requested, (2) obtain opinions of counsel to the Company and the Guarantors (which counsel and opinions, in form, scope and substance, shall be reasonably satisfactory to the Participating Holders and such Underwriters and their respective counsel) addressed to each Participating Holder and Underwriter of Registrable Securities, covering the matters customarily covered in opinions requested in underwritten offerings, (3) obtain “comfort” letters from the independent certified public accountants of the Company and the Guarantors (and, if necessary, any other certified public accountant of any subsidiary of the Company or the Guarantors, or of any business acquired by the Company or the Guarantors for which financial statements and financial data are or are required to be included in the Registration Statement) addressed to each Participating Holder (to the extent permitted by applicable professional standards) and Underwriter of Registrable Securities, such letters to be in customary form and covering matters of the type customarily covered in “comfort” letters in connection with underwritten offerings, including but not limited to financial information contained in any preliminary prospectus, Prospectus or Free Writing Prospectus, (4) obtain oil and gas reserve report letters from any independent petroleum engineering firms whose reports relating to the Company’s reserves have, prior to the date of such Shelf Registration, been previously publicly disclosed in a filing by the Company and (5) deliver such documents and certificates as may be reasonably requested by the Participating Holders of a majority in principal amount of the Registrable Securities being sold or the Underwriters, and which are customarily delivered in underwritten offerings, to evidence the continued validity of the representations and warranties of the Company and the Guarantors made pursuant to clause (1) above and to evidence compliance with any customary conditions contained in an underwriting agreement; and

(xvii)

So long as any Registrable Securities remain outstanding, cause each Additional Guarantor upon the creation or acquisition by the Company of such Additional Guarantor, to execute a counterpart to this Agreement in the form attached hereto as Annex A and to deliver such counterpart, together with an opinion of counsel as to the enforceability thereof against such entity, to the Initial Purchasers no later than five Business Days following the execution thereof.

(b) In the case of a Shelf Registration Statement, the Company may require each Holder of Registrable Securities to furnish to the Company a Notice and Questionnaire and such other information regarding such Holder and the proposed disposition by such Holder of such Registrable Securities as the Company and the Guarantors may from time to time reasonably request in writing.

(c) Each Participating Holder agrees that, upon receipt of any notice from the Company and the Guarantors of the happening of any event of the kind described in Section 3(a)(vi)(3) or Section 3(a)(vi)(5) hereof, such Participating Holder will forthwith discontinue disposition of Registrable Securities pursuant to the Shelf Registration Statement until such Participating Holder’s receipt of the copies of the supplemented or amended Prospectus and any Free Writing Prospectus contemplated by Section 3(a)(x) hereof and, if so directed by the Company and the Guarantors, such Participating Holder will deliver to the Company and the Guarantors all copies in its possession, other than permanent file copies then in such Participating Holder’s possession, of the Prospectus and any Free Writing Prospectus covering such Registrable Securities that is current at the time of receipt of such notice.

(d) If the Company and the Guarantors shall give any notice to suspend the disposition of Registrable Securities pursuant to a Registration Statement, the Company and the Guarantors shall extend the period during which such Registration Statement shall be maintained effective pursuant to this Agreement by the number of days during the period from and including the date of the giving of such notice to and including the date when the Holders of such Registrable Securities shall have received copies of the supplemented or amended Prospectus or any Free Writing Prospectus necessary to resume such dispositions. The Company and the Guarantors may give any such notice only twice during any 365-day period and any such suspensions shall not exceed 30 days for each suspension and there shall not be more than two suspensions in effect during any 365-day period.

(e) The Participating Holders who desire to do so may sell such Registrable Securities in an Underwritten Offering. In any such Underwritten Offering, the investment bank or investment banks and manager or managers (each an “ Underwriter ”) that will administer the offering will be selected by the Holders of a majority in principal amount of the Registrable Securities included in such offering; provided, however, that such Underwriter must be reasonably satisfactory to the Company.

4. Participation of Broker-Dealers in Exchange Offer . (a) The Staff has taken the position that any broker-dealer that receives Exchange Securities for its own account in the Exchange Offer in exchange for Securities that were acquired by such broker-dealer as a result of market-making or other trading activities (a “ Participating Broker-Dealer ”) may be deemed to be an “underwriter” within the meaning of the Securities Act and must deliver a prospectus meeting the requirements of the Securities Act in connection with any resale of such Exchange Securities.

The Company and the Guarantors understand that it is the Staff’s position that if the Prospectus contained in the Exchange Offer Registration Statement includes a plan of distribution containing a statement to the above effect and the means by which Participating Broker-Dealers may resell the Exchange Securities, without naming the Participating Broker-Dealers or specifying the amount of Exchange Securities owned by them, such Prospectus may be delivered by Participating Broker-Dealers (or, to the extent permitted by law, made available to purchasers) to satisfy their prospectus delivery obligation under the Securities Act in connection with resales of Exchange Securities for their own accounts, so long as the Prospectus otherwise meets the requirements of the Securities Act.

(b) In light of the above, and notwithstanding the other provisions of this Agreement, the Company and the Guarantors agree to amend or supplement the Prospectus contained in the Exchange Offer Registration Statement for a period of up to 180 days after the last Exchange Date (as such period may be extended pursuant to Section 3(d) of this Agreement), in order to expedite or facilitate the disposition of any Exchange Securities by Participating Broker-Dealers consistent with the positions of the Staff recited in Section 4(a) above. The Company and the Guarantors further agree that Participating Broker-Dealers shall be authorized to deliver such Prospectus (or, to the extent permitted by law, make available) during such period in connection with the resales contemplated by this Section 4 .

(c) The Initial Purchasers shall have no liability to the Company, any Guarantor or any Holder with respect to any request that they may make pursuant to Section 4(b) above.

5. Indemnification and Contribution . (a) The Company and the Guarantors, jointly and severally, agree to indemnify and hold harmless each Initial Purchaser and each Holder, their respective affiliates, directors and officers and each Person, if any, who controls any Initial Purchaser or any Holder within the meaning of Section 15 of the Securities Act or Section 20 of the Exchange Act, from and against any and all losses, claims, damages and liabilities (including, without limitation, legal fees and other expenses incurred in connection with any suit, action or proceeding or any claim asserted, as such fees and expenses are incurred), joint or several, that arise out of, or are based upon, (1) any untrue statement or alleged untrue statement of a material fact contained in any Registration Statement or any omission or alleged omission to state therein a material fact required to be stated therein or necessary in order to make the statements therein not misleading, or (2) any untrue statement or alleged untrue statement of a material fact contained in any Prospectus, any Free Writing Prospectus or any “issuer information” (“ Issuer Information ”) filed or required to be filed pursuant to Rule 433(d) under the Securities Act, or any omission or alleged omission to state therein a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading, in each case except insofar as such losses, claims, damages or liabilities arise out of, or are based upon, any untrue statement or omission or alleged untrue statement or omission made in reliance upon and in conformity with any information relating to any Initial Purchaser or information relating to any Holder furnished to the Company in writing through J.P. Morgan or any selling Holder expressly for use therein. In connection with any Underwritten Offering permitted by Section 3 , the Company and the Guarantors, jointly and severally, will also indemnify the Underwriters, if any, selling brokers, dealers and similar securities industry professionals participating in the distribution, their respective affiliates and each Person who controls such Persons (within the meaning of the Securities Act and the Exchange Act) to the same extent as provided above with respect to the indemnification of the Holders, if requested in connection with any Registration Statement, any Prospectus, any Free Writing Prospectus or any Issuer Information.

(b) Each Holder agrees, severally and not jointly, to indemnify and hold harmless the Company, the Guarantors, the Initial Purchasers and the other selling Holders, the directors of the Company and the Guarantors, each officer of the Company and the Guarantors who signed the Registration Statement and each Person, if any, who controls the Company, the Guarantors, any Initial Purchaser and any other selling Holder within the meaning of Section 15

of the Securities Act or Section 20 of the Exchange Act to the same extent as the indemnity set forth in paragraph (a) above, but only with respect to any losses, claims, damages or liabilities that arise out of, or are based upon, any untrue statement or omission or alleged untrue statement or omission made in reliance upon and in conformity with any information relating to such Holder furnished to the Company in writing by such Holder expressly for use in any Registration Statement, any Prospectus and any Free Writing Prospectus.

(c) If any suit, action, proceeding (including any governmental or regulatory investigation), claim or demand shall be brought or asserted against any Person in respect of which indemnification may be sought pursuant to either paragraph (a) or (b) above, such Person (the “ Indemnified Person ”) shall promptly notify the Person against whom such indemnification may be sought (the “ Indemnifying Person ”) in writing; provided that the failure to notify the Indemnifying Person shall not relieve it from any liability that it may have under paragraph (a) or (b) above except to the extent that it has been materially prejudiced (through the forfeiture of substantive rights or defenses) by such failure; and provided , further , that the failure to notify the Indemnifying Person shall not relieve it from any liability that it may have to an Indemnified Person otherwise than under paragraph (a) or (b) above . If any such proceeding shall be brought or asserted against an Indemnified Person and it shall have notified the Indemnifying Person thereof, the Indemnifying Person shall retain counsel reasonably satisfactory to the Indemnified Person to represent the Indemnified Person and any others entitled to indemnification pursuant to this Section 5 that the Indemnifying Person may designate in such proceeding and shall pay the fees and expenses of such counsel related to such proceeding, as incurred. In any such proceeding, any Indemnified Person shall have the right to retain its own counsel, but the fees and expenses of such counsel shall be at the expense of such Indemnified Person unless (i) the Indemnifying Person and the Indemnified Person shall have mutually agreed to the contrary; (ii) the Indemnifying Person has failed within a reasonable time to retain counsel reasonably satisfactory to the Indemnified Person; (iii) the Indemnified Person shall have reasonably concluded that there may be legal defenses available to it that are different from or in addition to those available to the Indemnifying Person; or (iv) the named parties in any such proceeding (including any impleaded parties) include both the Indemnifying Person and the Indemnified Person and representation of both parties by the same counsel would be inappropriate due to actual or potential differing interests between them. It is understood and agreed that the Indemnifying Person shall not, in connection with any proceeding or related proceeding in the same jurisdiction, be liable for the fees and expenses of more than one separate firm (in addition to any local counsel) for all Indemnified Persons, and that all such fees and expenses shall be reimbursed as they are incurred. Any such separate firm (x) for any Initial Purchaser, its affiliates, directors and officers and any control Persons of such Initial Purchaser shall be designated in writing by J.P. Morgan, (y) for any Holder, its directors and officers and any control Persons of such Holder shall be designated in writing by the Majority Holders and (z) in all other cases shall be designated in writing by the Company. The Indemnifying Person shall not be liable for any settlement of any proceeding effected without its written consent, but if settled with such consent or if there be a final judgment for the plaintiff, the Indemnifying Person agrees to indemnify each Indemnified Person from and against any loss or liability by reason of such settlement or judgment. Notwithstanding the foregoing sentence, if at any time an Indemnified Person shall have requested that an Indemnifying Person reimburse the Indemnified Person for fees and expenses of counsel as contemplated by this paragraph, the Indemnifying Person shall be liable for any settlement of any proceeding effected without its written consent if

(i) such settlement is entered into more than 30 days after receipt by the Indemnifying Person of such request and (ii) the Indemnifying Person shall not have reimbursed the Indemnified Person in accordance with such request prior to the date of such settlement. No Indemnifying Person shall, without the written consent of the Indemnified Person, effect any settlement of any pending or threatened proceeding in respect of which any Indemnified Person is or could have been a party and indemnification could have been sought hereunder by such Indemnified Person, unless such settlement (A) includes an unconditional release of such Indemnified Person, in form and substance reasonably satisfactory to such Indemnified Person, from all liability on claims that are the subject matter of such proceeding and (B) does not include any statement as to or any admission of fault, culpability or a failure to act by or on behalf of any Indemnified Person.

(d) If the indemnification provided for in paragraphs (a) and (b) above is unavailable to an Indemnified Person or insufficient in respect of any losses, claims, damages or liabilities referred to therein, then each Indemnifying Person under such paragraph, in lieu of indemnifying such Indemnified Person thereunder, shall contribute to the amount paid or payable by such Indemnified Person as a result of such losses, claims, damages or liabilities (i) in such proportion as is appropriate to reflect the relative benefits received by the Company and the Guarantors from the offering of the Securities and the Exchange Securities, on the one hand, and by the Holders from receiving Securities or Exchange Securities registered under the Securities Act, on the other hand, or (ii) if the allocation provided by clause (i) is not permitted by applicable law, in such proportion as is appropriate to reflect not only the relative benefits referred to in clause (i) but also the relative fault of the Company and the Guarantors on the one hand and the Holders on the other in connection with the statements or omissions that resulted in such losses, claims, damages or liabilities, as well as any other relevant equitable considerations. The relative fault of the Company and the Guarantors on the one hand and the Holders on the other shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or the omission or alleged omission to state a material fact relates to information supplied by the Company and the Guarantors or by the Holders and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission.

(e) The Company, the Guarantors and the Holders agree that it would not be just and equitable if contribution pursuant to this Section 5 were determined by pro rata allocation (even if the Holders were treated as one entity for such purpose) or by any other method of allocation that does not take account of the equitable considerations referred to in paragraph (d) above. The amount paid or payable by an Indemnified Person as a result of the losses, claims, damages and liabilities referred to in paragraph (d) above shall be deemed to include, subject to the limitations set forth above, any legal or other expenses incurred by such Indemnified Person in connection with any such action or claim. Notwithstanding the provisions of this Section 5 , in no event shall a Holder be required to contribute any amount in excess of the amount by which the total price at which the Securities or Exchange Securities sold by such Holder exceeds the amount of any damages that such Holder has otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission. No Person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act) shall be entitled to contribution from any Person who was not guilty of such fraudulent misrepresentation. The Holders’ obligations to contribute pursuant to this Section 5 are several and not joint.

(f) The remedies provided for in this Section 5 are not exclusive and shall not limit any rights or remedies that may otherwise be available to any Indemnified Person at law or in equity.

(g) The indemnity and contribution provisions contained in this Section 5 shall remain operative and in full force and effect regardless of (i) any termination of this Agreement, (ii) any investigation made by or on behalf of the Initial Purchasers or any Holder or any Person controlling any Initial Purchaser or any Holder, or by or on behalf of the Company or the Guarantors or the officers or directors of or any Person controlling the Company or the Guarantors, (iii) acceptance of any of the Exchange Securities and (iv) any sale of Registrable Securities pursuant to a Shelf Registration Statement.

6. General .

(a) No Inconsistent Agreements . The Company and the Guarantors represent, warrant and agree that (i) the rights granted to the Holders hereunder do not in any way conflict with and are not inconsistent with the rights granted to the holders of any other outstanding securities issued or guaranteed by the Company or any Guarantor under any other agreement and (ii) neither the Company nor any Guarantor has entered into, or on or after the date of this Agreement will enter into, any agreement that is inconsistent with the rights granted to the Holders of Registrable Securities in this Agreement or otherwise conflicts with the provisions hereof.

(b) Amendments and Waivers. The provisions of this Agreement, including the provisions of this sentence, may not be amended, modified or supplemented, and waivers or consents to departures from the provisions hereof may not be given unless the Company and the Guarantors have obtained the written consent of Holders of at least a majority in aggregate principal amount of the outstanding Registrable Securities affected by such amendment, modification, supplement, waiver or consent; provided that no amendment, modification, supplement, waiver or consent to any departure from the provisions of Section 5 hereof or any provision that could affect adversely the rights of any Holder of Registrable Securities to receive liquidated damages in the amount and on the payment dates as provided in Section 2(d) shall be effective as against any Holder of Registrable Securities unless consented to in writing by such Holder. Any amendments, modifications, supplements, waivers or consents pursuant to this Section 6(b) shall be by a writing executed by each of the parties hereto.

(c) Notices . All notices and other communications provided for or permitted hereunder shall be made in writing by hand-delivery, registered first-class mail, telex, telecopier, or any courier guaranteeing overnight delivery (i) if to a Holder, at the most current address given by such Holder to the Company by means of a notice given in accordance with the provisions of this Section 6(c) , which address initially is, with respect to the Initial Purchasers, the address set forth in the Purchase Agreement; (ii) if to the Company and the Guarantors, initially at the Company’s address set forth in the Purchase Agreement and thereafter at such other address, notice of which is given in accordance with the provisions of this Section 6(c) ; and (iii) to such other persons at their respective addresses as provided in the Purchase Agreement and thereafter at such other address, notice of which is given in accordance with the provisions of this Section 6(c) . All such notices and communications shall be deemed to have been duly

given: at the time delivered by hand, if personally delivered; five Business Days after being deposited in the mail, postage prepaid, if mailed; when receipt is acknowledged, if telecopied; and on the next Business Day if timely delivered to an air courier guaranteeing overnight delivery. Copies of all such notices, demands or other communications shall be concurrently delivered by the Person giving the same to the Trustee, at the address specified in the Indenture.

(d) Successors and Assigns . This Agreement shall inure to the benefit of and be binding upon the successors, assigns and transferees of each of the parties, including, without limitation and without the need for an express assignment, subsequent Holders; provided that nothing herein shall be deemed to permit any assignment, transfer or other disposition of Registrable Securities in violation of the terms of the Purchase Agreement or the Indenture. If any transferee of any Holder shall acquire Registrable Securities in any manner, whether by operation of law or otherwise, such Registrable Securities shall be held subject to all the terms of this Agreement, and by taking and holding such Registrable Securities such Person shall be conclusively deemed to have agreed to be bound by and to perform all of the terms and provisions of this Agreement and such Person shall be entitled to receive the benefits hereof. The Initial Purchasers (in their capacity as Initial Purchasers) shall have no liability or obligation to the Company or the Guarantors with respect to any failure by a Holder to comply with, or any breach by any Holder of, any of the obligations of such Holder under this Agreement.

(e) Third Party Beneficiaries. Each Holder shall be a third party beneficiary to the agreements made hereunder between the Company and the Guarantors, on the one hand, and the Initial Purchasers, on the other hand, and shall have the right to enforce such agreements directly to the extent it deems such enforcement necessary or advisable to protect its rights or the rights of other Holders hereunder.

(f) Counterparts . This Agreement may be executed in any number of counterparts and by the parties hereto in separate counterparts, each of which when so executed shall be deemed to be an original and all of which taken together shall constitute one and the same agreement.

(g) Headings . The headings in this Agreement are for convenience of reference only, are not a part of this Agreement and shall not limit or otherwise affect the meaning hereof.

(h) Governing Law. This Agreement, and any claim, controversy or dispute arising under or related to this Agreement, shall be governed by and construed in accordance with the laws of the State of New York.

(i) Entire Agreement; Severability . This Agreement contains the entire agreement between the parties relating to the subject matter hereof and supersedes all oral statements and prior writings with respect thereto. If any term, provision, covenant or restriction contained in this Agreement is held by a court of competent jurisdiction to be invalid, void or unenforceable or against public policy, the remainder of the terms, provisions, covenants and restrictions contained herein shall remain in full force and effect and shall in no way be affected, impaired or invalidated. The Company, the Guarantors and the Initial Purchasers shall endeavor in good faith negotiations to replace the invalid, void or unenforceable provisions with valid

provisions the economic effect of which comes as close as possible to that of the invalid, void or unenforceable provisions.

[Signature Page to Follow.]

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


OASIS PETROLEUM INC.
By:	/s/ Thomas B. Nusz
	Name:	Thomas B. Nusz
	Title:	President and Chief Executive Officer

OASIS PETROLEUM LLC
By:	/s/ Thomas B. Nusz
	Name:	Thomas B. Nusz
	Title:	President and Chief Executive Officer

OASIS PETROLEUM NORTH AMERICA LLC
By:	/s/ Thomas B. Nusz
	Name:	Thomas B. Nusz
	Title:	President and Chief Executive Officer

Confirmed and accepted as of the date first above written:


J.P. MORGAN SECURITIES LLC For itself and on behalf of the several Initial Purchasers
By:	/s/ Geoff Benson
	Name:	Geoff Benson
	Title:	Managing Director

[Signature Page to Registration Rights Agreement]

Annex A

Counterpart to Registration Rights Agreement

The undersigned hereby absolutely, unconditionally and irrevocably agrees as a Guarantor (as defined in the Registration Rights Agreement, dated February 2, 2011 by and among Oasis Petroleum Inc., a Delaware corporation, the guarantors party thereto and J.P. Morgan Securities LLC, on behalf of itself and the other Initial Purchasers) to be bound by the terms and provisions of such Registration Rights Agreement.

IN WITNESS WHEREOF , the undersigned has executed this counterpart as of , 201 .


	[GUARANTOR]
	By:
		Name:
		Title:

Annex A

Exhibit 10.1

$400,000,000

OASIS PETROLEUM INC.

7.25% Senior Notes due 2019

Purchase Agreement

January 28, 2011

J.P. Morgan Securities LLC
as Representative of the
several Initial Purchasers listed
in Schedule 1 hereto

c/o J.P. Morgan Securities LLC
383 Madison Avenue
New York, New York 10179

Ladies and Gentlemen:

Oasis Petroleum Inc., a Delaware corporation (the “ Company ”), proposes to issue and sell to the several initial purchasers listed in Schedule 1 hereto (the “ Initial Purchasers ”), for whom you are acting as representative (the “ Representative ”), $400,000,000 principal amount of its 7.25% Senior Notes due 2019 (the “ Securities ”). The Securities will be issued pursuant to an Indenture to be dated as of February 2, 2011 (the “ Base Indenture ”) between the Company and U.S. Bank National Association, as trustee (the “ Trustee ”), as amended and supplemented by the First Supplemental Indenture thereto dated as of February 2, 2011 (the “ Supplemental Indenture ”) among the Company, the guarantors listed in Schedule 2 hereto (the “ Guarantors ”) and the Trustee. The Base Indenture as amended and supplemented by the Supplemental Indenture is referred to herein as the “ Indenture .” The Securities will be guaranteed on an unsecured senior basis pursuant to guarantees (the “ Guarantees ”) by each of the Guarantors as set forth in the Indenture.

The Securities will be sold to the Initial Purchasers in a transaction not registered under the Securities Act of 1933, as amended (the “ Securities Act ”), in reliance upon an exemption therefrom. The Company and the Guarantors have prepared a preliminary offering memorandum dated January 24, 2011 (the “ Preliminary Offering Memorandum ”) and will prepare an offering memorandum dated the date hereof (the “ Offering Memorandum ”) setting forth information concerning the Company and the Securities. Copies of the Preliminary Offering Memorandum have been, and copies of the Offering Memorandum will be, delivered by the Company to the Initial Purchasers pursuant to the terms of this Agreement. The Company hereby confirms that it has authorized the use of the Preliminary Offering Memorandum, the other Time of Sale Information (as defined below), the Recorded Road Show (as defined below) and the Offering

Memorandum in connection with the offering and resale of the Securities by the Initial Purchasers in the manner contemplated by this Agreement. Capitalized terms used but not defined herein shall have the meanings given to such terms in the Preliminary Offering Memorandum. References herein to the Preliminary Offering Memorandum, the Time of Sale Information and the Offering Memorandum shall be deemed to refer to and include any document incorporated by reference therein.

At or prior to 12:15 p.m. (Eastern Standard Time) on the date hereof, which is before the time when sales of the Securities were first made (the “ Time of Sale ”), the following information shall have been prepared (collectively, the “ Time of Sale Information ”): the Preliminary Offering Memorandum, as supplemented and amended by the written communications listed on Annex A hereto.

Holders of the Securities (including the Initial Purchasers and their direct and indirect transferees) will be entitled to the benefits of a Registration Rights Agreement, to be dated the Closing Date (as defined below) and substantially in the form attached hereto as Exhibit A (the “ Registration Rights Agreement ”), pursuant to which the Company and the Guarantors will agree to file one or more registration statements with the Securities and Exchange Commission (the “ Commission ”) providing for the registration under the Securities Act of the resale of the Securities or the offer and issuance of the Exchange Securities referred to (and as defined) in the Registration Rights Agreement.

The Company and the Guarantors hereby confirm their agreement with the several Initial Purchasers concerning the purchase and resale of the Securities, as follows:

1. Purchase and Resale of the Securities . (a) On the basis of the representations, warranties and agreements set forth herein and subject to the conditions set forth herein, the Company agrees to issue and sell the Securities to the several Initial Purchasers as provided in this Agreement, and each Initial Purchaser agrees, severally and not jointly, to purchase from the Company, the respective principal amount of Securities set forth opposite such Initial Purchaser’s name in Schedule 1 hereto at a price equal to 97.75% of the principal amount thereof plus accrued interest, if any, from February 2, 2011 to the Closing Date. The Company will not be obligated to deliver any of the Securities except upon payment for all the Securities to be purchased as provided herein.

(b) The Company understands that the Initial Purchasers intend to offer the Securities for resale on the terms set forth in the Time of Sale Information. Each Initial Purchaser, severally and not jointly, represents, warrants and agrees that:

(i) it is a qualified institutional buyer within the meaning of Rule 144A under the Securities Act (a “ QIB ”) and an accredited investor within the meaning of Rule 501(a) under the Securities Act;

(ii) it has not solicited offers for, or offered or sold, and will not solicit offers for, or offer or sell, the Securities by means of any form of general solicitation or general advertising within the meaning of Rule 502(c) of Regulation D under the Securities Act

(“ Regulation D ”) or in any manner involving a public offering within the meaning of Section 4(2) of the Securities Act; and

(iii) it has not solicited offers for, or offered or sold, and will not solicit offers for, or offer or sell, the Securities as part of their initial offering except:

(A) within the United States to persons whom it reasonably believes to be QIBs in transactions pursuant to Rule 144A under the Securities Act (“ Rule 144A ”) and in connection with each such sale, it has taken or will take reasonable steps to ensure that the purchaser of the Securities is aware that such sale is being made in reliance on Rule 144A; or

(B) in accordance with the restrictions set forth in Annex C hereto.

(c) Each Initial Purchaser acknowledges and agrees that the Company and, for purposes of the “no registration” opinions to be delivered to the Initial Purchasers pursuant to Sections 6(g) and 6(h) , Vinson & Elkins LLP as counsel for the Company, and Andrews Kurth LLP as counsel for the Initial Purchasers, respectively, may rely upon the accuracy of the representations and warranties of the Initial Purchasers, and compliance by the Initial Purchasers with their agreements, contained in paragraph (b) above (including Annex C hereto), and each Initial Purchaser hereby consents to such reliance.

(d) The Company acknowledges and agrees that the Initial Purchasers may offer and sell Securities to or through any affiliate of an Initial Purchaser and that any such affiliate may offer and sell Securities purchased by it to or through any Initial Purchaser.

(e) The Company and the Guarantors acknowledge and agree that the Initial Purchasers are acting solely in the capacity of an arm’s length contractual counterparty to the Company and the Guarantors with respect to the offering of Securities contemplated hereby (including in connection with determining the terms of the offering) and not as financial advisors or fiduciaries to, or agents of, the Company, the Guarantors or any other person. Additionally, neither the Representative nor any other Initial Purchaser is advising the Company, the Guarantors or any other person as to any legal, tax, investment, accounting or regulatory matters in any jurisdiction. The Company and the Guarantors shall consult with their own advisors concerning such matters and shall be responsible for making their own independent investigation and appraisal of the transactions contemplated hereby, and neither the Representative nor any other Initial Purchaser shall have any responsibility or liability to the Company or the Guarantors with respect thereto. Any review by the Representative or any Initial Purchaser of the Company, the Guarantors, and the transactions contemplated hereby or other matters relating to such transactions will be performed solely for the benefit of the Representative or such Initial Purchaser, as the case may be, and shall not be on behalf of the Company, the Guarantors or any other person.

2. Payment and Delivery .

(a) Payment for and delivery of the Securities will be made at the offices of Vinson & Elkins LLP at 10:00 A.M., New York City time, on February 2, 2011, or at such other time or place on the same or such other date, not later than the fifth business day thereafter, as the

Representative and the Company may agree upon in writing. The time and date of such payment and delivery is referred to herein as the “ Closing Date .”

(b) Payment for the Securities shall be made by wire transfer in immediately available funds to the account(s) specified by the Company to the Representative against delivery to the nominee of The Depository Trust Company (“ DTC ”), for the account of the Initial Purchasers, of one or more global notes representing the Securities (collectively, the “ Global Note ”), with any transfer taxes payable in connection with the sale of the Securities duly paid by the Company. The Global Note will be made available for inspection by the Representative not later than 1:00 P.M., New York City time, on the business day prior to the Closing Date.

3. Representations and Warranties of the Company and the Guarantors . The Company and the Guarantors jointly and severally represent and warrant to each Initial Purchaser that:

(a) Preliminary Offering Memorandum, Time of Sale Information and Offering Memorandum . The Preliminary Offering Memorandum, as of its date, did not, the Time of Sale Information, at the Time of Sale, did not, and at the Closing Date, will not, and the Offering Memorandum, in the form first used by the Initial Purchasers to confirm sales of the Securities and as of the Closing Date, will not, contain any untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading; provided that the Company and the Guarantors make no representation or warranty with respect to any statements or omissions made in reliance upon and in conformity with information relating to any Initial Purchaser furnished to the Company in writing by such Initial Purchaser through the Representative expressly for use in the Preliminary Offering Memorandum, the Time of Sale Information or the Offering Memorandum.

(b) Additional Written Communications . The Company and the Guarantors (including their agents and representatives, other than the Initial Purchasers in their capacity as such) have not prepared, made, used, authorized, approved or referred to and will not prepare, make, use, authorize, approve or refer to any written communication that constitutes an offer to sell or solicitation of an offer to buy the Securities (each such communication by the Company and the Guarantors or their agents and representatives (other than a communication referred to in clauses (i) , (ii) and (iii) below) an “ Issuer Written Communication ”) other than (i) the Preliminary Offering Memorandum, (ii) the Offering Memorandum, (iii) the documents listed on Annex A hereto, including a term sheet substantially in the form of Annex B hereto, which constitute part of the Time of Sale Information, and (iv) any electronic road show (the “ Recorded Road Show ”) or other written communications, in each case used in accordance with Section 4(c) . Each such Issuer Written Communication, when taken together with the Time of Sale Information, did not, and at the Closing Date will not, contain any untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading; provided that the Company and Guarantors make no representation and warranty with respect to any statements or omissions made in each such Issuer Written Communication in reliance upon and in conformity with information relating to any Initial Purchaser furnished to the Company in writing by such Initial Purchaser through the

Representative expressly for use in any Issuer Written Communication. Each Issuer Written Communication does not conflict with the Time of Sale Information or the Offering Memorandum.

(c) Incorporated Documents . The documents incorporated by reference in each of the Time of Sale Information and the Offering Memorandum, when filed with the Commission, conformed or will conform, as the case may be, in all material respects to the requirements of the Exchange Act and the rules and regulations of the Commission thereunder, and, when filed, did not or will not, as applicable, contain any untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading.

(d) Financial Statements . The historical consolidated financial statements (including the related notes and supporting schedules, if any) of the Company and its consolidated subsidiaries included or incorporated by reference in each of the Time of Sale Information and the Offering Memorandum present fairly, in all material respects, the consolidated financial position of the Company and its subsidiaries as of the dates and for the periods specified; such financial statements have been prepared in accordance with the applicable accounting requirements of Regulation S-X under the Securities Act and in conformity with generally accepted accounting principles in the United States (“ GAAP ”) applied on a consistent basis throughout the periods involved and the supporting schedules included or incorporated by reference in each of the Time of Sale Information and Offering Memorandum present fairly in all material respects the information stated therein. The summary historical consolidated data set forth in each of the Time of Sale Information and the Offering Memorandum under the caption “Summary—Summary historical consolidated financial data,” and the selected historical consolidated data set forth under the caption “Selected historical consolidated financial data” in each of the Time of Sale Information and Offering Memorandum is accurately presented in all material respects and prepared on a basis consistent with the historical financial statements from which it has been derived. All disclosures contained in each of the Time of Sale Information and the Offering Memorandum regarding “non-GAAP financial measures” (as such term is defined by the rules and regulations of the Commission) comply in all material respects with Regulation G under the Exchange Act and Item 10 of Regulation S-K of the Securities Act, to the extent applicable. Any other financial information included or incorporated by reference in each of the Time of Sale Information and the Offering Memorandum has been derived from the accounting records of the Company and its subsidiaries and presents fairly, in all material respects, the information shown thereby.

(e) No Material Adverse Change . Except as set forth in each of the Time of Sale Information and the Offering Memorandum, since the date of the most recent financial statements of the Company included or incorporated by reference in each of the Time of Sale Information and Offering Memorandum, there has not occurred any material adverse change, or any development involving a prospective material adverse change, in the condition, financial or otherwise, or in the earnings, business or operations, capitalization or long-term debt of the Company and its subsidiaries, taken as a whole.

(f) Organization and Good Standing of the Company . The Company has been duly incorporated, is validly existing as a corporation in good standing under the laws of the State of

Delaware, has the corporate power and authority to own, lease, operate or hold its property and to conduct its business and to enter into and assume the liabilities and obligations assumed or to be assumed by it pursuant to the Transaction Documents (as defined below) to which it is a party, as described in each of the Time of Sale Information and Offering Memorandum, and is duly qualified to transact business and is in good standing in each jurisdiction in which the conduct of its business or its ownership or lease of property requires such qualification, except to the extent the failure to be so qualified or be in good standing would not, individually or in the aggregate, have a material adverse effect on the business, properties, financial position, stockholders’ equity, results of operations, or prospects of the Company and its subsidiaries, taken as a whole, or on the performance by the Company and the Guarantors of their obligations under the Securities and the Guarantees (a “ Material Adverse Effect ”).

(g) Organization and Good Standing of the Subsidiaries . The Company has no subsidiaries other than those identified on Schedule 3 . Each subsidiary of the Company, including the Guarantors, has been duly incorporated, formed or organized, as applicable, is validly existing as an entity in good standing under the laws of the jurisdiction of its incorporation, formation or organization, as applicable (such jurisdictions listed on Schedule 3 ), has the corporate or other power and authority to own, lease, operate or hold its property and to conduct its business, and to enter into and assume the liabilities and obligations assumed or to be assumed by it pursuant to the Transaction Documents to which it is a party, as described in each of the Time of Sale Information and the Offering Memorandum, and is duly qualified to transact business and is in good standing in each jurisdiction in which the conduct of its business or its ownership or lease of property requires such qualification (such jurisdictions listed on Schedule 3 ), except to the extent that the failure to be so qualified or be in good standing would not have a Material Adverse Effect. The Company does not own, directly or indirectly, equity securities or other ownership interests of any entity other than its interests in such subsidiaries.

(h) Capitalization . The table under the heading “Capitalization” in each of the Time of Sale Information and the Offering Memorandum sets forth as of the date of such table, (i) the actual capitalization of the Company and its subsidiaries on a consolidated basis and (ii) the as adjusted capitalization of the Company and its subsidiaries on a consolidated basis, after giving effect to the issuance of the Securities and the application of the net proceeds therefrom as described in each of the Time of Sale Information and in the Offering Memorandum under the section entitled “Use of proceeds.” The limited liability company agreements governing all limited liability company interests of each subsidiary of the Company have been validly executed and delivered, and all capital contributions required under such limited liability company agreements have been paid in full; and all of the limited liability company interests of each subsidiary of the Company have been duly and validly authorized and issued, fully paid and are non-assessable, and are owned directly or indirectly by the Company, free and clear of any lien, charge, encumbrance, security interest, restriction on voting or transfer or any other claim of any third party, except as otherwise described in each of the Time of Sale Information and the Offering Memorandum, including liens under the Amended and Restated Credit Agreement, dated as of February 26, 2010, by and among Oasis Petroleum LLC, Oasis Petroleum North America LLC, the guarantors party thereto, BNP Paribas, as Administrative Agent and the lenders thereto, as amended by the First Amendment to Amended and Restated Credit Agreement, dated as of June 3, 2010, the Second Amendment to Amended and Restated Credit Agreement, dated as of August 11, 2010, and the Third Amendment to Amended and Restated

Credit Agreement and Limited Waiver, dated as of January 21, 2011 (as so amended, the “ Credit Agreement ”).

(i) Due Authorization . The Company and each of the Guarantors have full right, power and authority to execute and deliver this Agreement, the Securities, the Indenture (including each Guarantee set forth therein), the Exchange Securities and the Registration Rights Agreement (collectively, the “ Transaction Documents ”) and to perform their respective obligations hereunder and thereunder; and all action required to be taken for the due and proper authorization, execution and delivery of each of the Transaction Documents and the consummation of the transactions contemplated thereby has been duly and validly taken.

(j) The Base Indenture and the Supplemental Indenture . The Base Indenture has been duly authorized by the Company and, when duly executed and delivered in accordance with its terms by the Company, the Base Indenture will constitute a valid and legally binding agreement of the Company enforceable against the Company in accordance with its terms, except as enforceability may be limited by applicable bankruptcy, insolvency, or similar laws affecting the enforcement of creditors rights generally or by equitable principles relating to enforceability (collectively, the “ Enforceability Exceptions ”); the Supplemental Indenture has been duly authorized by the Company and each of the Guarantors and, when duly executed and delivered in accordance with its terms by each of the parties thereto, the Supplemental Indenture will constitute a valid and legally binding agreement of the Company and each of the Guarantors enforceable against the Company and each of the Guarantors in accordance with its terms, subject to the Enforceability Exceptions ; and on the Closing Date, the Indenture will conform in all material respects to the requirements of the Trust Indenture Act of 1939, as amended (the “ Trust Indenture Act ”), and the rules and regulations of the Commission applicable to an indenture that is qualified thereunder.

(k) The Securities and the Guarantees . The Securities have been duly authorized by the Company and, when duly executed, authenticated, issued and delivered as provided in the Indenture and paid for as provided herein, will be duly and validly issued and outstanding and will constitute valid and legally binding obligations of the Company enforceable against the Company in accordance with their terms, subject to the Enforceability Exceptions, and will be entitled to the benefits of and be in the form contemplated by the Indenture; and the Guarantees have been duly authorized by each of the Guarantors and, when the Securities have been duly executed, authenticated, issued and delivered as provided in the Indenture and paid for as provided herein, will be valid and legally binding obligations of each of the Guarantors, enforceable against each of the Guarantors in accordance with their terms, subject to the Enforceability Exceptions, and will be entitled to the benefits of and be in the form contemplated by the Indenture.

(l) The Exchange Securities . On the Closing Date, the Exchange Securities (including the related guarantees thereof by the Guarantors) will have been duly authorized by the Company and each of the Guarantors and, when duly executed, authenticated, issued and delivered in accordance with the Indenture and as contemplated by the Registration Rights Agreement, will be duly and validly issued and outstanding and will constitute valid and legally binding obligations of the Company, as issuer, and each of the Guarantors, as guarantor, enforceable against the Company and each of the Guarantors in accordance with their terms,

subject to the Enforceability Exceptions, and will be entitled to the benefits of and be in the form contemplated by the Indenture.

(m) Purchase and Registration Rights Agreements . This Agreement has been duly authorized, executed and delivered by the Company and each of the Guarantors; and the Registration Rights Agreement has been duly authorized by the Company and each of the Guarantors and on the Closing Date will be duly executed and delivered by the Company and each of the Guarantors and, when duly executed and delivered in accordance with its terms by each of the parties thereto, will constitute a valid and legally binding agreement of the Company and each of the Guarantors enforceable against the Company and each of the Guarantors in accordance with its terms, subject to the Enforceability Exceptions, and except that rights to indemnity and contribution thereunder may be limited by applicable law and public policy.

(n) Descriptions of the Transaction Documents . Each Transaction Document conforms in all material respects to the description thereof contained in each of the Time of Sale Information and the Offering Memorandum.

(o) No Violation or Default . Neither the Company nor any of its subsidiaries is (i) in violation of its charter or by-laws or similar organizational documents; (ii) in default, and no event has occurred that, with notice or lapse of time or both, would constitute such a default, in the due performance or observance of any term, covenant or condition contained in any indenture, mortgage, deed of trust, loan agreement or other agreement or instrument to which the Company or any of its subsidiaries is a party or by which the Company or any of its subsidiaries is bound or to which any of the property or assets of the Company or any of its subsidiaries is subject; or (iii) in violation of any law or statute or any judgment, order, rule or regulation of any court or arbitrator or governmental or regulatory authority, except, in the case of clauses (ii) and (iii) above, for any such default or violation that would not, individually or in the aggregate, have a Material Adverse Effect.

(p) No Conflicts . The execution, delivery and performance by the Company and each of the Guarantors of each of the Transaction Documents to which each is a party, the issuance and sale of the Securities (and the Guarantees), and compliance by the Company and each of the Guarantors with the terms thereof and the consummation of the transactions contemplated by the Transaction Documents will not (i) conflict with or result in a breach or violation of any of the terms or provisions of, or constitute a default under, or result in the creation or imposition of any lien, charge or encumbrance upon any property or assets of the Company or any of its subsidiaries pursuant to, any indenture, mortgage, deed of trust, loan agreement or other agreement or instrument to which the Company or any of its subsidiaries is a party or by which the Company or any of its subsidiaries is bound or to which any of the property or assets of the Company or any of its subsidiaries is subject, (ii) result in any violation of the provisions of the charter or by-laws or similar organizational documents of the Company or any of its subsidiaries or (iii) result in the violation of any law or statute or any judgment, order, rule or regulation of any court or arbitrator or governmental or regulatory authority, except for any such conflict, breach, violation, default, lien, charge or encumbrance described in clauses (i) and (iii) above, which would not, individually or in the aggregate, have a Material Adverse Effect.

(q) No Consents Required . No consent, approval, authorization, order, filing, registration or qualification of or with any court or arbitrator or governmental or regulatory authority is required for the execution, delivery and performance by the Company and each of the Guarantors of each of the Transaction Documents to which each is a party, the issuance and sale of the Securities (and the Guarantees), and compliance by the Company and each of the Guarantors with the terms thereof and the consummation of the transactions contemplated by the Transaction Documents, except for such consents, approvals, authorizations, orders, filings and registrations or qualifications (i) as may be required under applicable state securities laws in connection with the purchase and resale of the Securities by the Initial Purchasers or (ii) with respect to the Exchange Securities (and the related guarantees thereof by the Guarantors) as may be required under the Securities Act, the Trust Indenture Act and applicable state securities laws as contemplated by the Registration Rights Agreement.

(r) Legal Proceedings . There are no legal, governmental or regulatory investigations, actions, suits or proceedings pending to which the Company or any of its subsidiaries is a party (or with respect to any of the foregoing in existence on the date hereof, to which the Company or any of its subsidiaries could reasonably be expected to become a party) or to which any property of the Company or any of its subsidiaries is subject (or with respect to any of the foregoing in existence on the date hereof, to which any such property could reasonably be expected to become subject) other than (i) as accurately described in each of the Time of Sale Information and the Offering Memorandum and (ii) that, individually or in the aggregate, would not have a Material Adverse Effect; and, to the knowledge of the Company and each of the Guarantors, no such investigations, actions, suits or proceedings are threatened or contemplated by any governmental or regulatory authority or by others.

(s) Independent Accountants . PricewaterhouseCoopers LLP, who have certified certain financial statements of the Company and its subsidiaries, are independent public accountants with respect to the Company and its subsidiaries within the applicable rules and regulations adopted by the Commission and the Public Company Accounting Oversight Board (United States) and as required by Regulation S-X.

(t) Title to Real and Personal Property . Each of the Company and its subsidiaries has (i) good and defensible title to all of its oil and gas properties (including oil and gas wells, producing leasehold interests and appurtenant personal property), title investigations having been carried out by the Company or its subsidiaries consistent with the reasonable practice in the oil and gas industry in the areas in which the Company and its subsidiaries operate and (ii) good and marketable title to all other real and personal property owned by the Company and its subsidiaries, in each case, free and clear of all liens, encumbrances and defects except such as are described in each of the Time of Sale Information and the Offering Memorandum or such as do not materially affect the value of the properties of the Company and its subsidiaries, considered as one enterprise, and do not interfere in any material respect with the use made and proposed to be made of such properties by the Company and its subsidiaries, considered as one enterprise; and all of the leases and subleases under which the Company or any of its subsidiaries holds or uses properties are in full force and effect, with such exceptions as would not reasonably be expected to have a Material Adverse Effect, and neither the Company nor any of its subsidiaries has any notice of any material claim of any sort that has been asserted by anyone adverse to the rights of the Company or its subsidiaries under any of the leases or subleases mentioned above,

or affecting or questioning the rights of the Company or any subsidiary thereof to the continued possession or use of the leased or subleased premises. The working interests in oil, gas and mineral leases or mineral interests which constitute a portion of the real property held by the Company reflect in all material respects the right of the Company to explore, develop or receive production from such real property, and the care taken by the Company and its subsidiaries with respect to acquiring or otherwise procuring such leases or mineral interests was generally consistent with standard industry practices in the areas in which the Company and its subsidiaries operate for acquiring or procuring leases and interests therein to explore, develop or produce for hydrocarbons.

(u) Rights-of-Way . The Company and its subsidiaries have such consents, easements, rights-of-way or licenses from any person (“ rights-of-way ”) as are necessary to enable the Company and its subsidiaries to conduct their business in the manner described in each of the Time of Sale Information and the Offering Memorandum, subject to such qualifications as may be set forth in each of the Time of Sale Information and the Offering Memorandum, and except for such rights-of-way the lack of which would not have, individually or in the aggregate, a Material Adverse Effect.

(v) Title to Intellectual Property . The Company and its subsidiaries own or possess, or can acquire on reasonable terms, all patents, patent rights, licenses, inventions, copyrights, know-how (including trade secrets and other unpatented and/or unpatentable proprietary or confidential information, systems or procedures), trademarks, service marks and trade names currently employed by them in connection with the business now operated by them, except where the failure to so own or possess would not, individually or in the aggregate, have a Material Adverse Effect, and neither the Company nor any of its subsidiaries has received any notice of infringement of or conflict with asserted rights of others with respect to any of the foregoing, which, individually or in the aggregate, if the subject of an unfavorable decision, ruling or finding, would reasonably be expected to have a Material Adverse Effect.

(w) No Undisclosed Relationships . No relationship, direct or indirect, exists between or among the Company or any of its subsidiaries, on the one hand, and the directors, officers, equityholders, customers or suppliers of the Company or any of its subsidiaries, on the other, that is required by the Securities Act to be described in a registration statement that is not described or incorporated by reference in each of the Time of Sale Information and the Offering Memorandum. There are no outstanding loans, extensions of credit or advances or guarantees of indebtedness by the Company to or for the benefit of any of the officers or directors of the Company or any of the members of the families of any of them.

(x) Investment Company Act . Neither the Company nor any of its subsidiaries is, and after giving effect to the offering and sale of the Securities and the application of the proceeds thereof as described in each of the Time of Sale Information and the Offering Memorandum under the heading “Use of proceeds,” none of them will be, an “investment company” or an entity “controlled” by an “investment company” within the meaning of the Investment Company Act of 1940, as amended, and the rules and regulations of the Commission thereunder (collectively, the “ Investment Company Act ”).

(y) Taxes . All United States federal income tax returns of the Company and its subsidiaries required by law to be filed have been filed through the date of this Agreement (taking into account timely filed extensions) and all taxes shown by such returns or otherwise assessed, which are due and payable, have been paid, except assessments against which appeals have been or will be promptly taken and as to which adequate reserves have been provided in accordance with GAAP. The Company and its subsidiaries have filed all other tax returns that are required to have been filed through the date of this Agreement (taking into account timely filed extensions) pursuant to applicable foreign, state, local or other law except insofar as the failure to file such returns would not result in a Material Adverse Effect, and have paid all taxes due pursuant to such returns or pursuant to any assessment received by the Company and its subsidiaries, except (i) for such taxes, if any, as are being contested in good faith and as to which adequate reserves have been provided in accordance with GAAP, or (ii) insofar as the failure to pay would not result in a Material Adverse Effect.

(z) Licenses and Permits . The Company and its subsidiaries possess all licenses, certificates, authorizations and permits issued by, and have made all declarations and filings with, the appropriate federal, state, local or foreign governmental or regulatory authorities necessary to own or lease their respective properties and to conduct their respective businesses, except where the failure to possess such licenses, certificates, authorizations or permits would not, individually or in the aggregate, have a Material Adverse Effect; and except as described in each of the Time of Sale Information and the Offering Memorandum, neither the Company nor any of its subsidiaries has received any notice of proceedings relating to the revocation, nonrenewal or modification of any such license, certificate, authorization or permit which, individually or in the aggregate, if the subject of an unfavorable decision, ruling or finding, would reasonably be expected to have a Material Adverse Effect.

(aa) No Labor Disputes . No labor disturbance by or dispute with the employees of the Company or any of its subsidiaries exists or, to the knowledge of the Company or any of the Guarantors, is threatened or imminent, except for any such disturbance or dispute that would not reasonably be expected to have a Material Adverse Effect; and neither the Company nor any Guarantor is aware of any existing, threatened or imminent labor disturbance by or dispute with the employees of any of the Company’s or any of the Company’s subsidiaries’ principal suppliers, manufacturers, contractors or consultants, except as would not, individually or in the aggregate, have a Material Adverse Effect.

(bb) Compliance With Environmental Laws . The Company and its subsidiaries (i) are in compliance with any and all applicable federal, state and local laws and regulations relating to the protection of human health and safety (to the extent such health and safety relate to exposure to hazardous or toxic substances or wastes, pollutants or contaminants), the environment or hazardous or toxic substances or wastes, pollutants or contaminants (“Environmental Laws”), (ii) have received all permits, licenses or other approvals required of them under applicable Environmental Laws to conduct their respective businesses as they are currently being conducted, and (iii) are in compliance with all terms and conditions of any such permit, license or approval, except where such noncompliance with Environmental Laws, failure to receive such required permits, licenses or other approvals or failure to comply with the terms and conditions of such permits, licenses or approvals would not, individually or in the aggregate, have a Material Adverse Effect. There are no costs or liabilities arising under Environmental Laws with

respect to the operations or properties of the Company and its subsidiaries (including, without limitation, any capital or operating expenditures required for clean-up or closure of properties, compliance with Environmental Laws, any permit, license or approval or any related legal constraints on operating activities, and any potential liabilities of third parties assumed under contract by the Company or its subsidiaries) that would, individually or in the aggregate, have a Material Adverse Effect.

(cc) Compliance with ERISA. Except as would not, individually or in the aggregate, have a Material Adverse Effect, (i) each employee benefit plan, within the meaning of Section 3(3) of the Employee Retirement Income Security Act of 1974, as amended (“ ERISA ”), for which the Company or any member of its “Controlled Group” (defined as any organization which is a member of a controlled group of corporations within the meaning of Section 414 of the Internal Revenue Code of 1986, as amended (the “ Code ”)) would have any liability (each, a “ Plan ”) has been maintained in compliance with its terms and the requirements of any applicable statutes, orders, rules and regulations, including but not limited to ERISA and the Code; (ii) no prohibited transaction, within the meaning of Section 406 of ERISA or Section 4975 of the Code, has occurred with respect to any Plan excluding transactions effected pursuant to a statutory or administrative exemption; (iii) for each Plan that is subject to the funding rules of Section 412 of the Code or Section 302 of ERISA, no “accumulated funding deficiency” as defined in Section 412 of the Code, whether or not waived, has occurred or is reasonably expected to occur; (iv) the fair market value of the assets of each Plan exceeds the present value of all benefits accrued under such Plan (determined based on those assumptions used to fund such Plan); (v) no “reportable event” (within the meaning of Section 4043(c) of ERISA) has occurred or is reasonably expected to occur; and (vi) neither the Company nor any member of the Controlled Group has incurred, nor reasonably expects to incur, any liability under Title IV of ERISA (other than contributions to the Plan or premiums to the PBGC, in the ordinary course and without default) in respect of a Plan (including a “ multiemployer plan ”, within the meaning of Section 4001(a)(3) of ERISA).

(dd) Disclosure Controls . The Company and its subsidiaries maintain a system of “disclosure controls and procedures” (as defined in Rule 13a-15(e) of the Exchange Act) that is designed to ensure that information required to be disclosed by the Company in reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Commission’s rules and forms, including controls and procedures designed to ensure that such information is accumulated and communicated to the Company’s management as appropriate to allow timely decisions regarding required disclosure. The Company and its subsidiaries have carried out evaluations of the effectiveness of their disclosure controls and procedures as required by Rule 13a-15 of the Exchange Act.

(ee) Accounting Controls . The Company and its subsidiaries maintain a system of “internal control over financial reporting” (as defined in Rule 13a-15(f) of the Exchange Act) that comply with the requirements of the Exchange Act and have been designed by, or under the supervision of, their respective principal executive and principal financial officers, or persons performing similar functions, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with GAAP. The Company and its subsidiaries (A) make and keep books, records and accounts, which, in reasonable detail, accurately and fairly reflect the transactions and

dispositions of their assets and (B) maintain internal accounting controls sufficient to provide reasonable assurance that (i) transactions are executed in accordance with management’s general or specific authorizations; (ii) transactions are recorded as necessary to permit preparation of financial statements in conformity with GAAP and to maintain asset accountability; (iii) access to assets is permitted only in accordance with management’s general or specific authorization; and (iv) the recorded accountability for assets is compared with the existing assets at reasonable intervals and appropriate action is taken with respect to any differences. Except as disclosed in each of the Time of Sale Information and the Offering Memorandum, since the end of Oasis Petroleum LLC’s most recent audited fiscal year, (i) the Company has no reason to believe that there has been any material weakness in the Company’s internal control over financial reporting (whether or not remediated) and (ii) there has been no change in the Company’s internal control over financial reporting that has materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting.

(ff) Insurance . The Company and each of its subsidiaries are insured by insurers of recognized financial responsibility against such losses and risks and in such amounts as are prudent and customary in the businesses in which they are engaged; neither the Company nor any of its subsidiaries has been refused any insurance coverage sought or applied for; and neither the Company nor any of its subsidiaries has any reason to believe that it will not be able to renew its existing insurance coverage as and when such coverage expires or to obtain similar coverage from similar insurers as may be necessary to continue its business at a cost that would not have a Material Adverse Effect, except as described in each of the Time of Sale Information and Offering Memorandum.

(gg) No Unlawful Payments . Neither the Company nor any of its subsidiaries nor, to the knowledge of the Company and each of the Guarantors, any director, officer, agent, employee or other person associated with or acting on behalf of the Company or any of its subsidiaries has (i) used any corporate funds for any unlawful contribution, gift, entertainment or other unlawful expense relating to political activity; (ii) made any direct or indirect unlawful payment to any foreign or domestic government official or employee from corporate funds; (iii) violated or is in violation of any provision of the Foreign Corrupt Practices Act of 1977; or (iv) made any bribe, rebate, payoff, influence payment, kickback or other unlawful payment.

(hh) Compliance with Money Laundering Laws . The operations of the Company and its subsidiaries are and have been conducted at all times in compliance in all material respects with applicable financial recordkeeping and reporting requirements of the Currency and Foreign Transactions Reporting Act of 1970, as amended, the money laundering statutes of jurisdictions where the Company and its subsidiaries conduct business, the rules and regulations thereunder and any related or similar rules, regulations or guidelines, issued, administered or enforced by any governmental agency (collectively, the “ Money Laundering Laws ”) and no action, suit or proceeding by or before any court or governmental agency, authority or body or any arbitrator involving the Company or any of its subsidiaries with respect to the Money Laundering Laws is pending or, to the best knowledge of the Company and the Guarantors, threatened.

(ii) Compliance with OFAC . None of the Company, any of its subsidiaries or, to the knowledge of the Company and the Guarantors, any director, officer, agent, employee or affiliate of the Company or any of its subsidiaries is currently subject to any U.S. sanctions administered

by the Office of Foreign Assets Control of the U.S. Department of the Treasury (“ OFAC ”); and the Company will not directly or indirectly use the proceeds of the offering of the Securities hereunder, or lend, contribute or otherwise make available such proceeds to any subsidiary, joint venture partner or other person or entity, for the purpose of financing the activities of any person currently subject to any U.S. sanctions administered by OFAC.

(jj) Solvency . On and immediately after the Closing Date, the Company (after giving effect to the issuance of the Securities and the other transactions related thereto as described in each of the Time of Sale Information and the Offering Memorandum) will be Solvent. As used in this paragraph, the term “ Solvent ” means, with respect to a particular date, that on such date (i) the present fair market value (or present fair saleable value) of the assets of the Company is not less than the total amount required to pay the liabilities of the Company on its total existing debts and liabilities (including contingent liabilities) as they become absolute and matured; (ii) the Company is able to realize upon its assets and pay its debts and other liabilities, contingent obligations and commitments as they mature and become due in the normal course of business; (iii) assuming consummation of the issuance of the Securities as contemplated by this Agreement, the Time of Sale Information and the Offering Memorandum, the Company is not incurring debts or liabilities beyond its ability to pay as such debts and liabilities mature; (iv) the Company is not engaged in any business or transaction, and does not propose to engage in any business or transaction, for which its property would constitute unreasonably small capital after giving due consideration to the prevailing practice in the industry in which the Company is engaged; and (v) the Company is not a defendant in any civil action that would result in a judgment that the Company is or would become unable to satisfy.

(kk) No Restrictions on Subsidiaries . Except as set forth in Section 9.04 of the Credit Agreement, no subsidiary of the Company is currently prohibited, directly or indirectly, under any agreement or other instrument to which it is a party or is subject, from paying any dividends to the Company, from making any other distribution on such subsidiary’s equity securities or similar ownerships interest, from repaying to the Company any loans or advances to such subsidiary from the Company or from transferring any of such subsidiary’s properties or assets to the Company or any other subsidiary of the Company.

(ll) No Broker’s Fees . Neither the Company nor any of its subsidiaries is a party to any contract, agreement or understanding with any person (other than this Agreement) that would give rise to a valid claim against the Company or any of its subsidiaries or any Initial Purchaser for a brokerage commission, finder’s fee or like payment in connection with the offering and sale of the Securities.

(mm) Rule 144A Eligibility . On the Closing Date, the Securities will not be of the same class as securities listed on a national securities exchange registered under Section 6 of the Exchange Act or quoted on an automated inter-dealer quotation system; and each of the Preliminary Offering Memorandum and the Offering Memorandum, as of its respective date, contains or will contain all the information that, if requested by a prospective purchaser of the Securities, would be required to be provided to such prospective purchaser pursuant to Rule 144A(d)(4) under the Securities Act.

(nn) No Integration . Neither the Company nor any of its affiliates (as defined in Rule 501(b) of Regulation D) has, directly or through any agent, sold, offered for sale, solicited offers to buy or otherwise negotiated in respect of, any security (as defined in the Securities Act), that is or will be integrated with the sale of the Securities in a manner that would require registration of the Securities under the Securities Act.

(oo) No General Solicitation or Directed Selling Efforts . None of the Company or any of its affiliates or any other person acting on its or their behalf (other than the Initial Purchasers, as to which no representation is made) has (i) solicited offers for, or offered or sold, the Securities by means of any form of general solicitation or general advertising within the meaning of Rule 502(c) of Regulation D or in any manner involving a public offering within the meaning of Section 4(2) of the Securities Act or (ii) engaged in any directed selling efforts within the meaning of Regulation S under the Securities Act (“ Regulation S ”), and all such persons have complied with the offering restrictions requirement of Regulation S. The sale of the Securities pursuant to Regulation S is not part of a plan or scheme to evade the registration provisions of the Securities Act.

(pp) Securities Law Exemptions . Assuming the accuracy of the representations and warranties of the Initial Purchasers contained in Section 1(b) (including Annex C hereto) and their compliance with their agreements set forth therein, it is not necessary, in connection with the issuance and sale of the Securities to the Initial Purchasers and the offer, resale and delivery of the Securities by the Initial Purchasers in the manner contemplated by this Agreement, the Time of Sale Information and the Offering Memorandum, to register the offer and sale of the Securities under the Securities Act or to qualify the Indenture under the Trust Indenture Act.

(qq) No Stabilization . Neither the Company nor any of the Guarantors has taken, directly or indirectly, any action designed to or that could reasonably be expected to cause or result in any stabilization or manipulation of the price of the Securities.

(rr) Margin Rules . Neither the issuance, sale and delivery of the Securities nor the application of the proceeds thereof by the Company as described in each of the Time of Sale Information and the Offering Memorandum will violate Regulation T, U or X of the Board of Governors of the Federal Reserve System or any other regulation of such Board of Governors. Each of the Company and its subsidiaries does not own, and none of the proceeds from the offering of Securities contemplated hereby will be used directly or indirectly to purchase or carry, any Margin Stock (as defined in Regulation U of the Board of Governors of the Federal Reserve System).

(ss) Forward-Looking Statements . No forward-looking statement (within the meaning of Section 27A of the Securities Act and Section 21E of the Exchange Act) contained or incorporated by reference in any of the Time of Sale Information or the Offering Memorandum has been made or reaffirmed without a reasonable basis or has been disclosed other than in good faith.

(tt) Statistical and Market Data . Nothing has come to the attention of the Company or any Guarantor that has caused the Company or any Guarantor to believe that the statistical and market-related data included or incorporated by reference in each of the Time of Sale

Information and the Offering Memorandum is not based on or derived from sources that are reliable and accurate in all material respects.

(uu) Engineers; Reserve Reports . The information underlying the estimates of the Company’s and Oasis Petroleum LLC’s reserves that was supplied to each of DeGolyer and MacNaughton and W.D. Von Gonten & Co. (the “ Reserve Engineers ”) for the purposes of preparing the reserve reports and estimates of the proved reserves of the Company referenced, included or incorporated by reference in each of the Time of Sale Information and the Offering Memorandum (the “ Reserve Reports ”), including production and costs of operation and estimates of future capital expenditures and other future exploration and development costs, was true and correct in all material respects on the dates such estimates were made, and such information was supplied and prepared in good faith, with a reasonable basis and in accordance with customary industry practices; other than normal production of the reserves, the impact of changes in prices and costs, and fluctuations in demand for oil and natural gas, and except as disclosed in or contemplated by each of the Time of Sale Information and the Offering Memorandum, neither the Company nor any of the Guarantors is aware of any facts or circumstances that would in the aggregate result in a material adverse change in the aggregate net proved reserves, or the aggregate present value or the standardized measure of the future net cash flows therefrom, as described in each of the Time of Sale Information and the Offering Memorandum and as reflected in the Reserve Reports; and the estimates of such reserves and the standardized measure of such reserves as described in each of the Time of Sale Information and the Offering Memorandum and reflected in the Reserve Reports referenced therein have been prepared in a manner that complies with the applicable requirements of the rules under the Securities Act with respect to such estimates. Each of the Reserve Engineers was, as of the date of each of the Reserve Reports prepared by them, and are, as of the date hereof, an independent petroleum engineer with respect to the Company and its subsidiaries.

(vv) Sarbanes-Oxley Act . There is and has been no failure on the part of the Company or any of the Company’s directors or officers, in their capacities as such, to comply with any provision of the Sarbanes-Oxley Act of 2002 (the “ Sarbanes Oxley Act ”) and the rules and regulations promulgated in connection therewith, including Section 402 related to loans and Sections 302 and 906, related to certifications.

(ww) Certain Statements and Agreements . The statements relating to legal matters, documents or proceedings included in each of the Time of Sale Information and the Offering Memorandum under the captions “Certain United States federal income tax considerations” and “Description of notes” in each case are accurate in all material respects and fairly summarize such matters, documents or proceedings. All material contracts, agreements or other documents that are required to be filed with the SEC as exhibits pursuant to the Securities Act or the Exchange Act have been filed as required.

(xx) Certain Transactions. Subsequent to the respective dates as of which information is given in each of the Time of Sale Information and the Offering Memorandum, (i) the Company and its subsidiaries have not incurred any material liability or obligation, direct or contingent, nor entered into any material transaction; (ii) the Company has not purchased any of its outstanding capital stock or equity, nor declared, paid or otherwise made any dividend or distribution of any kind on its capital stock; and (iii) there has not been any material change in

the capital stock or equity, short-term debt or long-term debt of the Company and its subsidiaries, except in each case as described in each of the Time of Sale Information and the Offering Memorandum, respectively.

4. Further Agreements of the Company and the Guarantors . The Company and each of the Guarantors jointly and severally covenant and agree with each Initial Purchaser that:

(a) Delivery of Copies . The Company will deliver, without charge, to the Initial Purchasers as many copies of the Preliminary Offering Memorandum, any other Time of Sale Information, any Issuer Written Communication and the Offering Memorandum (including all amendments and supplements thereto) as the Representative may reasonably request.

(b) Offering Memorandum Amendments or Supplements . Before finalizing the Offering Memorandum or making or distributing any amendment or supplement to any of the Time of Sale Information or the Offering Memorandum, or filing with the Commission any document that will be incorporated by reference therein, the Company will furnish to the Representative and counsel for the Initial Purchasers a copy thereof for review, and will not distribute any such proposed Offering Memorandum, amendment or supplement or file any such document with the Commission to which the Representative reasonably objects.

(c) Additional Written Communications . Before making, preparing, using, authorizing, approving or referring to any Issuer Written Communication, the Company will furnish to the Representative and counsel for the Initial Purchasers a copy of such written communication for review and will not make, prepare, use, authorize, approve or refer to any such written communication to which the Representative reasonably objects.

(d) Notice to the Representative . The Company will advise the Representative promptly, and confirm such advice in writing, (i) of the issuance by any governmental or regulatory authority of any order preventing or suspending the use of any of the Time of Sale Information, any Issuer Written Communication or the Offering Memorandum or the initiation or threatening of any proceeding for that purpose; (ii) of the occurrence of any event at any time prior to the completion of the initial offering of the Securities as a result of which any of the Time of Sale Information, any Issuer Written Communication or the Offering Memorandum as then amended or supplemented would include any untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances existing when such Time of Sale Information, Issuer Written Communication or the Offering Memorandum is delivered to a purchaser, not misleading; and (iii) of the receipt by the Company of any notice with respect to any suspension of the qualification of the Securities for offer and sale in any jurisdiction or the initiation or threatening of any proceeding for such purpose; and the Company will use its reasonable best efforts to prevent the issuance of any such order preventing or suspending the use of any of the Time of Sale Information, any Issuer Written Communication or the Offering Memorandum or suspending any such qualification of the Securities and, if any such order is issued, will obtain as soon as possible the withdrawal thereof.

(e) Time of Sale Information . If at any time prior to the Closing Date (i) any event shall occur or condition shall exist as a result of which any of the Time of Sale Information as

then amended or supplemented would include any untrue statement of a material fact or omit to state any material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading or (ii) it is necessary to amend or supplement any of the Time of Sale Information to comply with law, the Company will immediately notify the Initial Purchasers thereof and forthwith prepare, at the expense of the Company, and, subject to paragraph (b) above, furnish to the Initial Purchasers such amendments or supplements to any of the Time of Sale Information (or any document to be filed with the Commission and incorporated by reference therein) as may be necessary so that the statements in any of the Time of Sale Information as so amended or supplemented (including such document to be incorporated by reference therein) will not, in light of the circumstances under which they were made, be misleading or so that any of the Time of Sale Information will comply with law.

(f) Ongoing Compliance of the Offering Memorandum . If at any time prior to the completion of the initial offering of the Securities (i) any event shall occur or condition shall exist as a result of which the Offering Memorandum as then amended or supplemented would include any untrue statement of a material fact or omit to state any material fact necessary in order to make the statements therein, in the light of the circumstances existing when the Offering Memorandum is delivered to a purchaser, not misleading or (ii) it is necessary to amend or supplement the Offering Memorandum to comply with law, the Company will immediately notify the Initial Purchasers thereof and forthwith prepare, at the expense of the Company, and, subject to paragraph (b) above, furnish to the Initial Purchasers such amendments or supplements to the Offering Memorandum (or any document to be filed with the Commission and incorporated by reference therein) as may be necessary so that the statements in the Offering Memorandum as so amended or supplemented (including such document to be incorporated by reference therein) will not, in the light of the circumstances existing when the Offering Memorandum is delivered to a purchaser, be misleading or so that the Offering Memorandum will comply with law.

(g) Blue Sky Compliance . The Company will qualify the Securities for offer and sale under the securities or Blue Sky laws of such jurisdictions as the Representative shall reasonably request and will continue such qualifications in effect so long as required for the offering and resale of the Securities; provided that neither the Company nor any of the Guarantors shall be required to (i) qualify as a foreign corporation or other entity or as a dealer in securities in any such jurisdiction where it would not otherwise be required to so qualify, (ii) file any general consent to service of process in any such jurisdiction or (iii) subject itself to taxation in any such jurisdiction if it is not otherwise so subject.

(h) Clear Market . During the period from the date hereof through and including the date that is 60 days after the date hereof, the Company and each of the Guarantors will not, without the prior written consent of the Representative, offer, sell, contract to sell or otherwise dispose of any debt securities issued or guaranteed by the Company or any of the Guarantors and having a tenor of more than one year.

(i) Use of Proceeds . The Company will apply the net proceeds from the sale of the Securities as described in each of the Time of Sale Information and the Offering Memorandum under the heading “Use of proceeds.”

(j) Supplying Information . While the Securities remain outstanding and are “restricted securities” within the meaning of Rule 144(a)(3) under the Securities Act, the Company and each of the Guarantors will, during any period in which the Company is not subject to and in compliance with Section 13 or 15(d) of the Exchange Act, furnish to holders of the Securities and prospective purchasers of the Securities designated by such holders, upon the request of such holders or such prospective purchasers, the information required to be delivered pursuant to Rule 144A(d)(4) under the Securities Act.

(k) DTC . The Company will assist the Initial Purchasers in arranging for the Securities to be eligible for clearance and settlement through DTC.

(l) No Resales by the Company . The Company will not, and will not permit any of its affiliates (as defined in Rule 144 under the Securities Act) to, resell any of the Securities that have been acquired by any of them, except for Securities purchased by the Company or any of its affiliates and resold in a transaction registered under the Securities Act.

(m) No Integration . Neither the Company nor any of its affiliates (as defined in Rule 501(b) of Regulation D) will, directly or through any agent, sell, offer for sale, solicit offers to buy or otherwise negotiate in respect of, any security (as defined in the Securities Act), that is or will be integrated with the sale of the Securities in a manner that would require registration of the Securities under the Securities Act.

(n) No General Solicitation or Directed Selling Efforts . None of the Company, the Guarantors or any of their respective affiliates or any other person acting on its or their behalf (other than the Initial Purchasers, as to which no covenant is given) will (i) solicit offers for, or offer or sell, the Securities by means of any form of general solicitation or general advertising within the meaning of Rule 502(c) of Regulation D or in any manner involving a public offering within the meaning of Section 4(2) of the Securities Act or (ii) engage in any directed selling efforts (within the meaning of Regulation S), and all such persons will comply with the offering restrictions requirement of Regulation S.

(o) No Stabilization . Neither the Company nor any of the Guarantors will take, directly or indirectly, any action designed to or that could reasonably be expected to cause or result in any stabilization or manipulation of the price of the Securities.

5. Certain Agreements of the Initial Purchasers . Each Initial Purchaser hereby represents and agrees that it has not and will not use, authorize use of, refer to, or participate in the planning for use of, any written communication that constitutes an offer to sell or the solicitation of an offer to buy the Securities other than (i) the Preliminary Offering Memorandum and the Offering Memorandum, (ii) a written communication that contains no “issuer information” (as defined in Rule 433(h)(2) under the Securities Act) that was not included (including through incorporation by reference) in the Preliminary Offering Memorandum or the Offering Memorandum, (iii) any written communication listed on Annex A or prepared pursuant to Section 4(c) above (including any electronic road show), (iv) any written communication prepared by such Initial Purchaser and approved by the Company in advance in writing or (v) any written communication relating to or that contains the terms of the Securities and/or other

information that was included (including through incorporation by reference) in the Preliminary Offering Memorandum or the Offering Memorandum.

6. Conditions of Initial Purchasers’ Obligations . The obligation of each Initial Purchaser to purchase Securities on the Closing Date as provided herein is subject to the performance by the Company and each of the Guarantors of their respective covenants and other obligations hereunder and to the following additional conditions:

(a) Representations and Warranties . The representations and warranties of the Company and the Guarantors contained herein shall be true and correct on the date hereof and on and as of the Closing Date; and the statements of the Company, the Guarantors and their respective officers made in any certificates delivered pursuant to this Agreement shall be true and correct on and as of the Closing Date.

(b) No Downgrade . Subsequent to the earlier of (A) the Time of Sale and (B) the execution and delivery of this Agreement, (i) no downgrading shall have occurred in the rating accorded the Company or any of its subsidiaries, the Securities or any other debt securities or preferred stock issued or guaranteed by the Company or any of its subsidiaries by any “nationally recognized statistical rating organization”, as such term is defined by the Commission for purposes of Section 3(a)(62) under the Exchange Act; and (ii) no such organization shall have indicated that it has under surveillance or review, or has changed its outlook with respect to, its rating of the Securities or of any other debt securities or preferred stock issued or guaranteed by the Company or any of its subsidiaries (other than an announcement with positive implications of a possible upgrading).

(c) No Material Adverse Change . Subsequent to the execution and delivery of this Agreement, no event or condition of a type described in Section 3(e) hereof shall have occurred or shall exist, which event or condition is not described in each of the Time of Sale Information (excluding any amendment or supplement thereto) and the Offering Memorandum (excluding any amendment or supplement thereto) the effect of which in the judgment of the Representative makes it impracticable or inadvisable to proceed with the offering, sale or delivery of the Securities on the terms and in the manner contemplated by this Agreement, the Time of Sale Information and the Offering Memorandum.

(d) Officers’ Certificate . The Representative shall have received on and as of the Closing Date a certificate of two executive officers of the Company and of each Guarantor who have specific knowledge of the Company’s or such Guarantor’s financial matters and is satisfactory to the Representative (i) confirming that such officers have carefully reviewed the Time of Sale Information and the Offering Memorandum and, to the best knowledge of each such officer, the representations set forth in Sections 3(a) , 3(b) and 3(c) hereof are true and correct, (ii) confirming that the other representations and warranties of the Company and the Guarantors in this Agreement are true and correct and that the Company and the Guarantors have complied with all agreements and satisfied all conditions on their part to be performed or satisfied hereunder at or prior to the Closing Date, (iii) to the effect set forth in paragraphs (b) and (c) above and (iv) that, to the knowledge of each such officer, the statements of the Company and its officers made in any certificates delivered pursuant to this Agreement are true and correct on and as of the Closing Date.

(e) Comfort Letters . On the date of this Agreement and on the Closing Date, PricewaterhouseCoopers LLP shall have furnished to the Representative, at the request of the Company, letters, dated the respective dates of delivery thereof and addressed to Representative on behalf of the Initial Purchasers, in form and substance reasonably satisfactory to the Representative, containing statements and information of the type customarily included in accountants’ “comfort letters” to underwriters with respect to the financial statements and certain financial information of the Company and its subsidiaries contained or incorporated by reference in each of the Time of Sale Information and the Offering Memorandum; provided that the letter delivered on the date of this Agreement and the Closing Date shall use a “cut-off” date no more than three business days prior to such date.

(f) Reserve Engineer Letters . The Representative shall have received, on each of the date hereof and the Closing Date, a letter dated the date hereof or the Closing Date, as the case may be, in form and substance satisfactory to the Representative, from each of the Reserve Engineers, letters containing statements and information ordinarily included in reserve engineers’ “comfort letters” with respect to the applicable reserve reports and related information contained or incorporated by reference in the Time of Sale Information or the Offering Memorandum.

(g) Opinion and 10b-5 Statement of Counsel for the Company . The Representative shall have received the written opinion and 10b-5 statement, dated the Closing Date and addressed to the Initial Purchasers, from Vinson & Elkins L.L.P., counsel for the Company and the Guarantors, in substantially the form set forth as Exhibit B and in form and substance reasonably satisfactory to the Representative and counsel for the Initial Purchasers.

(h) Opinion and 10b-5 Statement of Counsel for the Initial Purchasers . The Representative shall have received on and as of the Closing Date an opinion and 10b-5 statement of Andrews Kurth LLP, counsel for the Initial Purchasers, with respect to such matters as the Representative may reasonably request, and such counsel shall have received such documents and information as they may reasonably request to enable them to pass upon such matters.

(i) No Legal Impediment to Issuance . No action shall have been taken and no statute, rule, regulation or order shall have been enacted, adopted or issued by any federal, state or foreign governmental or regulatory authority that would, as of the Closing Date, prevent the issuance or sale of the Securities or the issuance of the Guarantees; and no injunction or order of any federal, state or foreign court shall have been issued that would, as of the Closing Date, prevent the issuance or sale of the Securities or the issuance of the Guarantees.

(j) Good Standing . The Representative shall have received on and as of the Closing Date satisfactory evidence of the good standing of the Company and its subsidiaries in their respective jurisdictions of organization and their qualification and good standing in such other jurisdictions in which the conduct of the Company’s and its subsidiaries’ business or ownership or leasing of property or assets requires such qualification, in each case in writing or any standard form of telecommunication, from the appropriate governmental authorities of such jurisdictions.

(k) Indenture . The Company, the Guarantors and the Trustee shall have entered into the Indenture in form and substance reasonably satisfactory to the Representative, and the Representative shall have received a counterpart of the Indenture that shall have been executed and delivered by the Trustee and a duly authorized officer of the Company and each of the Guarantors.

(l) Registration Rights Agreement . The Representative shall have received a counterpart of the Registration Rights Agreement that shall have been executed and delivered by a duly authorized officer of the Company and each of the Guarantors.

(m) DTC . The Securities shall be eligible for clearance and settlement through DTC.

(n) Additional Documents . On or prior to the Closing Date, the Company and the Guarantors shall have furnished to the Representative such further certificates and documents as the Representative may reasonably request.

All opinions, letters, certificates and evidence mentioned above or elsewhere in this Agreement shall be deemed to be in compliance with the provisions hereof only if they are in form and substance reasonably satisfactory to counsel for the Initial Purchasers.

7. Indemnification and Contribution .

(a) Indemnification of the Initial Purchasers . The Company and each of the Guarantors jointly and severally agree to indemnify and hold harmless each Initial Purchaser, its affiliates who have, or who are alleged to have, participated in the distribution of Securities, directors and officers and each person, if any, who controls (within the meaning of Section 15 of the Securities Act or Section 20 of the Exchange Act) such Initial Purchaser, and the successors and assigns of all the foregoing persons, from and against any and all losses, claims, damages and liabilities (including, without limitation, legal fees and other expenses incurred in connection with any suit, action or proceeding or any claim asserted, as such fees and expenses are incurred), joint or several, that arise out of, or are based upon, any untrue statement or alleged untrue statement of a material fact contained or incorporated by reference in the Preliminary Offering Memorandum, any of the other Time of Sale Information, any Issuer Written Communication or the Offering Memorandum (or any amendment or supplement thereto) or any omission or alleged omission to state therein a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading, in each case except insofar as such losses, claims, damages or liabilities arise out of, or are based upon, any untrue statement or omission or alleged untrue statement or omission made in reliance upon and in conformity with any information relating to any Initial Purchaser furnished to the Company in writing by such Initial Purchaser through the Representative expressly for use therein, it being understood and agreed that the only such information furnished by any Initial Purchaser consists of the information described as such in paragraph (b) below.

(b) Indemnification of the Company . Each Initial Purchaser agrees, severally and not jointly, to indemnify and hold harmless the Company, each of the Guarantors, each of their respective directors and officers and each person, if any, who controls the Company or any of the Guarantors (within the meaning of Section 15 of the Securities Act or Section 20 of the

Exchange Act) to the same extent as the indemnity set forth in paragraph (a) above, but only with respect to any losses, claims, damages or liabilities that arise out of, or are based upon, any untrue statement or omission or alleged untrue statement or omission made in reliance upon and in conformity with any information relating to such Initial Purchaser furnished to the Company in writing by such Initial Purchaser through the Representative expressly for use in the Preliminary Offering Memorandum, any of the other Time of Sale Information, any Issuer Written Communication or the Offering Memorandum (or any amendment or supplement thereto), it being understood and agreed that the only such information consists of the following: the information contained in the third and fourth sentences of the tenth paragraph and the twelfth paragraph, respectively, under the caption “Plan of distribution” in the Preliminary Offering Memorandum and the Offering Memorandum.

(c) Notice and Procedures . If any suit, action, proceeding (including any governmental or regulatory investigation), claim or demand shall be brought or asserted against any person in respect of which indemnification may be sought pursuant to either paragraph (a) or (b) above, such person (the “ Indemnified Person ”) shall promptly notify the person against whom such indemnification may be sought (the “ Indemnifying Person ”) in writing; provided that the failure to notify the Indemnifying Person shall not relieve it from any liability that it may have under paragraph (a) or (b) above except to the extent that it has been materially prejudiced (through the forfeiture of substantive rights or defenses) by such failure; and provided , further , that the failure to notify the Indemnifying Person shall not relieve it from any liability that it may have to an Indemnified Person otherwise than under paragraph (a) or (b) above. If any such proceeding shall be brought or asserted against an Indemnified Person and it shall have notified the Indemnifying Person thereof, the Indemnifying Person shall retain counsel reasonably satisfactory to the Indemnified Person (who shall not, without the consent of the Indemnified Person, be counsel to the Indemnifying Person) to represent the Indemnified Person and any others entitled to indemnification pursuant to this Section 7 that the Indemnifying Person may designate in such proceeding and shall pay the fees and expenses of such proceeding and shall pay the fees and expenses of such counsel related to such proceeding, as incurred. In any such proceeding, any Indemnified Person shall have the right to retain its own counsel, but the fees and expenses of such counsel shall be at the expense of such Indemnified Person unless (i) the Indemnifying Person and the Indemnified Person shall have mutually agreed in writing to the contrary; (ii) the Indemnifying Person has failed within a reasonable time to retain counsel reasonably satisfactory to the Indemnified Person; (iii) the Indemnified Person shall have reasonably concluded that there may be legal defenses available to it that are different from or in addition to those available to the Indemnifying Person; or (iv) the named parties in any such proceeding (including any impleaded parties) include both the Indemnifying Person and the Indemnified Person and representation of both parties by the same counsel would be inappropriate due to actual or potential differing interests between them. It is understood and agreed that the Indemnifying Person shall not, in connection with any proceeding or related proceeding in the same jurisdiction, be liable for the reasonably incurred fees and expenses of more than one separate firm (in addition to any local counsel) for all Indemnified Persons, and that all such fees and expenses shall be paid or reimbursed as they are incurred. Any such separate firm for any Initial Purchaser, its affiliates, directors and officers and any control persons of such Initial Purchaser shall be designated in writing by J.P. Morgan Securities LLC and any such separate firm for the Company, the Guarantors, their respective directors and officers and any control persons of the Company and the Guarantors shall be designated in

writing by the Company. The Indemnifying Person shall not be liable for any settlement of any proceeding effected without its written consent (which shall not be unreasonably withheld), but if settled with such consent or if there be a final judgment for the plaintiff, the Indemnifying Person agrees to indemnify each Indemnified Person from and against any loss or liability by reason of such settlement or judgment. Notwithstanding the foregoing sentence, if at any time an Indemnified Person shall have requested that an Indemnifying Person reimburse the Indemnified Person for fees and expenses of counsel as contemplated by this paragraph (c) , the Indemnifying Person shall be liable for any settlement of any proceeding effected without its written consent if (i) such settlement is entered into more than 30 days after receipt by the Indemnifying Person of such request and (ii) the Indemnifying Person shall not have reimbursed the Indemnified Person in accordance with such request prior to the date of such settlement. No Indemnifying Person shall, without the written consent of the Indemnified Person (which shall not be unreasonably withheld), effect any settlement of any pending or threatened proceeding in respect of which any Indemnified Person is or could have been a party and indemnification could have been sought hereunder by such Indemnified Person, unless such settlement (x) includes an unconditional release of such Indemnified Person, in form and substance reasonably satisfactory to such Indemnified Person, from all liability on claims that are the subject matter of such proceeding and (y) does not include any statement as to or any admission of fault, culpability or a failure to act by or on behalf of any Indemnified Person.

(d) Contribution . If the indemnification provided for in paragraphs (a) and (b) above is unavailable to an Indemnified Person or insufficient in respect of any losses, claims, damages or liabilities referred to therein, then each Indemnifying Person under such paragraph, in lieu of indemnifying such Indemnified Person thereunder, shall contribute to the amount paid or payable by such Indemnified Person as a result of such losses, claims, damages or liabilities (i) in such proportion as is appropriate to reflect the relative benefits received by the Company and the Guarantors on the one hand and the Initial Purchasers on the other from the offering of the Securities or (ii) if the allocation provided by clause (i) above is not permitted by applicable law, in such proportion as is appropriate to reflect not only the relative benefits referred to in clause (i) above but also the relative fault of the Company and the Guarantors on the one hand and the Initial Purchasers on the other in connection with the statements or omissions that resulted in such losses, claims, damages or liabilities, as well as any other relevant equitable considerations. The relative benefits received by the Company and the Guarantors on the one hand and the Initial Purchasers on the other shall be deemed to be in the same respective proportions as the net proceeds (before deducting expenses) received by the Company from the sale of the Securities and the total discounts and commissions received by the Initial Purchasers in connection therewith, as provided in this Agreement, bear to the aggregate offering price of the Securities. The relative fault of the Company and the Guarantors on the one hand and the Initial Purchasers on the other shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or the omission or alleged omission to state a material fact relates to information supplied by the Company or any Guarantor or by the Initial Purchasers and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission.

(e) Limitation on Liability . The Company, the Guarantors and the Initial Purchasers agree that it would not be just and equitable if contribution pursuant to this Section 7 were determined by pro rata allocation (even if the Initial Purchasers were treated as one entity for

such purpose) or by any other method of allocation that does not take account of the equitable considerations referred to in paragraph (d) above. The amount paid or payable by an Indemnified Person as a result of the losses, claims, damages and liabilities referred to in paragraph (d) above shall be deemed to include, subject to the limitations set forth above, any legal or other expenses incurred by such Indemnified Person in connection with any such action or claim. Notwithstanding the provisions of this Section 7 , in no event shall an Initial Purchaser be required to contribute any amount in excess of the amount by which the total discounts and commissions received by such Initial Purchaser with respect to the offering of the Securities exceeds the amount of any damages that such Initial Purchaser has otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation. The Initial Purchasers’ obligations to contribute pursuant to this Section 7 are several in proportion to their respective purchase obligations hereunder and not joint.

(f) Non-Exclusive Remedies . The remedies provided for in this Section 7 are not exclusive and shall not limit any rights or remedies that may otherwise be available to any Indemnified Person at law or in equity.

8. Termination . This Agreement may be terminated in the absolute discretion of the Representative, by notice to the Company, if after the execution and delivery of this Agreement and on or prior to the Closing Date (i) trading generally shall have been suspended or materially limited, or minimum or maximum prices for trading have been fixed, or maximum ranges for prices have been required, on or by any of the New York Stock Exchange, the Nasdaq Global Select Market or the over-the-counter market; (ii) trading of any securities issued or guaranteed by the Company or any of the Guarantors shall have been suspended on any exchange or in any over-the-counter market; (iii) a material disruption in securities settlement, payment or clearance services in the United States shall have occurred; (iv) a general moratorium on commercial banking activities shall have been declared by federal or New York State authorities; (v) there shall have occurred any outbreak or escalation of hostilities or any change in financial markets or any calamity or crisis, either within or outside the United States, that, in the judgment of the Representative, is material and adverse and makes it impracticable or inadvisable to proceed with the offering, sale or delivery of the Securities on the terms and in the manner contemplated by this Agreement, the Time of Sale Information and the Offering Memorandum; or (vi) there has been, since the time of execution of this Agreement or since the respective dates as of which information is given in the Time of Sale Information or the Offering Memorandum, any change in the condition, financial or otherwise, or in the earnings, business affairs or business prospects of the Company and its subsidiaries, taken as a whole, whether or not arising in the ordinary course of business, that, in the judgment of the Representative, is material and adverse and makes it impracticable or inadvisable to proceed with the offering, sale or delivery of the Securities on the terms and in the manner contemplated by this Agreement, the Time of Sale Information and the Offering Memorandum.

9. Defaulting Initial Purchaser .

(a) If, on the Closing Date, any Initial Purchaser defaults on its obligation to purchase the Securities that it has agreed to purchase hereunder, the non-defaulting Initial Purchasers may in their discretion arrange for the purchase of such Securities by other persons satisfactory to the Company on the terms contained in this Agreement. If, within 36 hours after any such default by any Initial Purchaser, the non-defaulting Initial Purchasers do not arrange for the purchase of such Securities, then the Company shall be entitled to a further period of 36 hours within which to procure other persons satisfactory to the non-defaulting Initial Purchasers to purchase such Securities on such terms. If other persons become obligated or agree to purchase the Securities of a defaulting Initial Purchaser, either the non-defaulting Initial Purchasers or the Company may postpone the Closing Date for up to five full business days in order to effect any changes that in the opinion of counsel for the Company or counsel for the Initial Purchasers may be necessary in the Time of Sale Information, the Offering Memorandum or in any other document or arrangement, and the Company agrees to promptly prepare any amendment or supplement to the Time of Sale Information or the Offering Memorandum that effects any such changes. As used in this Agreement, the term “ Initial Purchaser ” includes, for all purposes of this Agreement unless the context otherwise requires, any person not listed in Schedule 1 hereto that, pursuant to this Section 9 , purchases Securities that a defaulting Initial Purchaser agreed but failed to purchase.

(b) If, after giving effect to any arrangements for the purchase of the Securities of a defaulting Initial Purchaser or Initial Purchasers by the non-defaulting Initial Purchasers and the Company as provided in paragraph (a) above, the aggregate principal amount of such Securities that remains unpurchased does not exceed one-eleventh of the aggregate principal amount of all the Securities, then the Company shall have the right to require each non-defaulting Initial Purchaser to purchase the principal amount of Securities that such Initial Purchaser agreed to purchase hereunder plus such Initial Purchaser’s pro rata share (based on the principal amount of Securities that such Initial Purchaser agreed to purchase hereunder) of the Securities of such defaulting Initial Purchaser or Initial Purchasers for which such arrangements have not been made.

(c) If, after giving effect to any arrangements for the purchase of the Securities of a defaulting Initial Purchaser or Initial Purchasers by the non-defaulting Initial Purchasers and the Company as provided in paragraph (a) above, the aggregate principal amount of such Securities that remains unpurchased exceeds one-eleventh of the aggregate principal amount of all the Securities, or if the Company shall not exercise the right described in paragraph (b) above, then this Agreement shall terminate without liability on the part of the non-defaulting Initial Purchasers. Any termination of this Agreement pursuant to this Section 9 shall be without liability on the part of the Company or the Guarantors, except that the Company and each of the Guarantors will continue to be liable for the payment of expenses as set forth in Section 10 hereof and except that the provisions of Section 7 hereof shall not terminate and shall remain in effect.

(d) Nothing contained herein shall relieve a defaulting Initial Purchaser of any liability it may have to the Company, the Guarantors or any non-defaulting Initial Purchaser for damages caused by its default.

10. Payment of Expenses .

(a) Whether or not the transactions contemplated by this Agreement are consummated or this Agreement is terminated, the Company and each of the Guarantors jointly and severally agree to pay or cause to be paid all costs and expenses incident to the performance of their respective obligations hereunder, including without limitation, (i) the costs incident to the authorization, issuance, sale, preparation and delivery of the Securities and any transfer fees or taxes payable in that connection; (ii) the costs incident to the preparation, printing of the Preliminary Offering Memorandum, any other Time of Sale Information, any Issuer Written Communication and the Offering Memorandum (including any amendment or supplement thereto) and the distribution thereof; (iii) the costs of reproducing and distributing each of the Transaction Documents; (iv) the fees and expenses of the Company’s and the Guarantors’ counsel, the independent accountants and reserve engineers; (v) the fees and expenses incurred in connection with the registration or qualification and determination of eligibility for investment of the Securities under the laws of such jurisdictions as the Representative may designate and the preparation, printing and distribution of a Blue Sky Memorandum (including the related fees and expenses of counsel for the Initial Purchasers); (vi) any fees charged by rating agencies for rating the Securities; (vii) the fees and expenses of the Trustee and any paying agent (including related fees and expenses of any counsel to such parties); (viii) all expenses and application fees incurred in connection with the approval of the Securities for book-entry transfer by DTC; and (ix) all expenses incurred by the Company in connection with any “road show” presentation to potential investors (including, without limitation, expenses associated with the preparation or dissemination of any electronic road show, expenses associated with the production of road show slides and graphics, fees and expenses of any consultants engaged in connection with the road show presentations with the prior approval of the Company, travel and lodging expenses of the representatives and officers of the Company and any such consultants; provided that notwithstanding clause (ix) above, the Initial Purchasers shall pay one-half of the lease expenses associated with any airplane which is used in connection with such “road show” presentations.

(b) If (i) this Agreement is terminated pursuant to clauses (ii) or (vi) of Section 8 , (ii) the Company for any reason fails to tender the Securities for delivery to the Initial Purchasers or (iii) the Initial Purchasers decline to purchase the Securities for any reason permitted under this Agreement, the Company and each of the Guarantors jointly and severally agrees to reimburse the Initial Purchasers for all out-of-pocket costs and expenses (including the fees and expenses of their counsel) reasonably incurred by the Initial Purchasers in connection with this Agreement and the offering contemplated hereby.

11. Persons Entitled to Benefit of Agreement . This Agreement shall inure to the benefit of and be binding upon the parties hereto and their respective successors and any controlling persons referred to herein, and the affiliates, officers and directors of each Initial Purchaser referred to in Section 7 hereof. Nothing in this Agreement is intended or shall be construed to give any other person any legal or equitable right, remedy or claim under or in respect of this Agreement or any provision contained herein. No purchaser of Securities from any Initial Purchaser shall be deemed to be a successor merely by reason of such purchase.

12. Survival . The respective indemnities, rights of contribution, representations, warranties and agreements of the Company, the Guarantors and the Initial Purchasers contained

in this Agreement or made by or on behalf of the Company, the Guarantors or the Initial Purchasers pursuant to this Agreement or any certificate delivered pursuant hereto shall survive the delivery of and payment for the Securities and shall remain in full force and effect, regardless of any termination of this Agreement or any investigation made by or on behalf of the Company, the Guarantors or the Initial Purchasers.

13. Certain Defined Terms . For purposes of this Agreement, (a) except where otherwise expressly provided, the term “affiliate” has the meaning set forth in Rule 405 under the Securities Act; (b) the term “business day” means any day other than a day on which banks are permitted or required to be closed in New York City; (c) the term “Exchange Act” means the Securities Exchange Act of 1934, as amended; (d) except where otherwise expressly provided, the term “subsidiary” has the meaning set forth in Rule 405 under the Securities Act; and (e) the term “written communication” has the meaning set forth in Rule 405 under the Securities Act.

14. Miscellaneous .

(a) Authority of the Representative . Any action by the Initial Purchasers hereunder may be taken by J.P. Morgan Securities LLC on behalf of the Initial Purchasers, and any such action taken by J.P. Morgan Securities LLC shall be binding upon the Initial Purchasers.

(b) Notices . All notices and other communications hereunder shall be in writing and shall be deemed to have been duly given if mailed or transmitted and confirmed by any standard form of telecommunication. Notices to the Initial Purchasers shall be given to the Representative c/o J.P. Morgan Securities LLC, 383 Madison Avenue, New York, New York 10179 (fax: (212) 270-1063); Attention: Geoffrey Benson. Notices to the Company and the Guarantors shall be given to them at 1001 Fannin, Suite 1500, Houston, Texas 77002, Attention: Niko Lorentzatos (fax: (281) 404-9704).

(c) Governing Law . This Agreement and any claim, controversy or dispute arising under or related to this Agreement shall be governed by and construed in accordance with the laws of the State of New York.

(d) Counterparts . This Agreement may be signed in counterparts (which may include counterparts delivered by any standard form of telecommunication), each of which shall be an original and all of which together shall constitute one and the same instrument.

(e) Amendments or Waivers . No amendment or waiver of any provision of this Agreement, nor any consent or approval to any departure therefrom, shall in any event be effective unless the same shall be in writing and signed by the parties hereto.

(f) Headings . The headings herein are included for convenience of reference only and are not intended to be part of, or to affect the meaning or interpretation of, this Agreement.

[ Signature pages to follow ]

If the foregoing is in accordance with your understanding, please indicate your acceptance of this Agreement by signing in the space provided below.


	Very truly yours, OASIS PETROLEUM INC.
	/s/ Thomas B. Nusz
	Name:	Thomas B. Nusz
	Title:	President and Chief Executive Officer

	OASIS PETROLEUM LLC
	/s/ Thomas B. Nusz
	Name:	Thomas B. Nusz
	Title:	President and Chief Executive Officer

	OASIS PETROLEUM NORTH AMERICA LLC
	/s/ Thomas B. Nusz
	Name:	Thomas B. Nusz
	Title:	President and Chief Executive Officer

SIGNATURE PAGE TO PURCHASE AGREEMENT

Accepted: January 28, 2011

J.P. MORGAN SECURITIES LLC

On behalf of itself and each of the
several Initial Purchasers listed in
Schedule 1 hereto.



By:	/s/ Geoff Benson
	Authorized Signatory
	Name:	Geoff Benson
	Title:	Managing Director

SIGNATURE PAGE TO PURCHASE AGREEMENT

Schedule 1


Initial Purchaser	Principal Amount

J.P. Morgan Securities LLC	$	140,000,000
Wells Fargo Securities, LLC	$	100,000,000
BNP Paribas Securities Corp.	$	40,000,000
UBS Securities LLC	$	40,000,000
Johnson Rice & Company L.L.C.	$	23,000,000
Morgan Keegan & Company, Inc.	$	11,000,000
RBS Securities Inc.	$	23,000,000
Tudor, Pickering, Holt & Co. Securities, Inc.	$	23,000,000

TOTAL:	$	400,000,000

Schedule 1

Schedule 2


Guarantors		Jurisdiction of
Name of Subsidiary		Organization
OASIS PETROLEUM LLC		Delaware
OASIS PETROLEUM NORTH AMERICA, LLC		Delaware

Schedule 2

Schedule 3


			Beneficial
	Jurisdiction of	Foreign	Ownership by the
Subsidiary	Organization	Qualifications	Company
Oasis Petroleum LLC	Delaware	Texas		100	%
Oasis Petroleum North America LLC	Delaware	Montana, North Dakota, South Dakota and Texas		100	%
Oasis Petroleum International LLC	Delaware	None		100	%
Oasis Petroleum Columbia LLC	Delaware	None		100	%

Schedule 3

ANNEX A

Additional Time of Sale Information

1. Term sheet containing the terms of the Securities, substantially in the form of Annex B .

Annex A-1

ANNEX B

Pricing Term Sheet

Annex B-1

Supplement, dated January 28, 2011
to Preliminary Offering Memorandum Dated January 24, 2011
Strictly confidentia l

OASIS PETROLEUM INC.

This Supplement is qualified in its entirety by reference to the Preliminary Offering Memorandum (as supplemented through and including the date hereof, the “ Preliminary Offering Memorandum ”). The information in this Supplement supplements the Preliminary Offering Memorandum and updates and supersedes the information in the Preliminary Offering Memorandum to the extent it is inconsistent with the information in the Preliminary Offering Memorandum. Capitalized terms used in this Supplement but not defined herein have the meanings given them in the Preliminary Offering Memorandum.

The notes have not been registered under the Securities Act of 1933 and are being offered only to (1) “qualified institutional buyers” as defined in Rule 144A under the Securities Act and (2) outside the United States to non-U.S. persons in compliance with Regulation S under the Securities Act.


Issuer:		Oasis Petroleum Inc.

Title of Securities:		7.25% Senior Notes due 2019

Aggregate Principal Amount:		$400,000,000

Gross Proceeds:		$400,000,000

Distribution:		144A/Regulation S with Registration Rights as set forth in the Preliminary Offering Memorandum

Final Maturity Date:		February 1, 2019

Issue Price:		100%

Coupon:		7.25%

Yield to Maturity:		7.25%

Spread to Benchmark Treasury:		+429 bps

Benchmark Treasury:		UST 2.75% due February 15, 2019

Interest Payment Dates:		February 1 and August 1

First Interest Payment Date:		August 1, 2011

Ratings:		Moody’s: Caa1 S&P: B-

		A securities rating is not a recommendation to buy, sell or hold securities and may be subject to revision or withdrawal at any time .

Optional Redemption:		On and after February 1 , 2015, in whole or in part, at the

Annex B-2


		prices set forth below (expressed as percentages of the principal amount), plus accrued and unpaid interest, if any, to the date of redemption, on February 1 of the years set forth below:


Optional Redemption with Equity Proceeds:		In addition, prior to February 1, 2014, up to 35% at a redemption price equal to 107.25% of the aggregate principal amount thereof, plus accrued and unpaid interest thereon, if any, to the date of redemption.

Change of Control:		Putable at 101% of principal, plus accrued and unpaid interest to the date of purchase.

CUSIP / ISIN Numbers:		144A: 674215AA6 US674215AA68 Regulation S: U65204AA4 USU65204AA40

Denominations/Multiple:		$2,000 x 1,000

Trade Date:		January 28, 2011

Settlement:		(T+3) on February 2, 2011

Initial Purchasers of Senior Notes:		Joint Book-Running Managers : J.P. Morgan Securities LLC Wells Fargo Securities, LLC BNP Paribas Securities Corp. UBS Securities LLC

		Co-Managers :
		Johnson Rice & Company L.L.C.
		Morgan Keegan & Company, Inc.
		RBS Securities Inc.
		Tudor, Pickering, Holt & Co. Securities, Inc.

Other Information:

Summary—Our business strategy

The following disclosure under “Summary—Our business strategy—Maintain financial flexibility and conservative financial position” on page 4 of the Preliminary Offering Memorandum and each other location where such disclosure appears in the Preliminary Offering Memorandum are amended to read as follows:

“As of December 31, 2010, we had no outstanding borrowings under our revolving credit facility and expect to have $671.0 million of liquidity available as a result of this offering, including approximately $533.5 million in cash and $137.5 million available under our revolving credit facility after giving effect to our recent amendment to our

Annex B-3

revolving credit facility and increase in the aggregate principal amount of notes offered hereby from $300 million to $400 million.”

Summary—Recent developments—Amendment to revolving credit facility and redetermination of borrowing base

The disclosure under “Summary—Recent developments—Amendment to revolving credit facility and redetermination of borrowing base” on page 5 of the Preliminary Offering Memorandum is supplemented with the following disclosure:

“As a result of increasing the aggregate principal amount of notes offered hereby from $300 million to $400 million, our borrowing base will automatically decrease by $12.5 million to $137.5 million.”

Summary—The offering—Ranking

The following disclosure under “Summary—The offering—Ranking” on page 7 if the Preliminary Offering Memorandum is amended to read as follows:

“As of December 31, 2010, on an as adjusted basis after giving effect to the sale of the notes, the application of the net proceeds therefrom as described under “Use of proceeds” in this offering memorandum and the recent adjustments to the borrowing base under our revolving credit facility, Oasis would have had no indebtedness outstanding, other than the notes, and Oasis would have had approximately $137.5 million of secured borrowing capacity available under its revolving credit facility after taking into account approximately $25,000 of outstanding letters of credit. As of December 31, 2010, the non-guarantor subsidiaries of Oasis had no material assets and no indebtedness outstanding.”

Summary—Summary historical and reserve data

The fifth sentence of footnote 2 to the table under “Summary—Summary historical and reserve data” on page 15 and to the table under “Business—Our operations—Estimated proved reserves” on page 82 of the Preliminary Offering Memorandum and each other location where such disclosure appears in the Preliminary Offering Memorandum are amended to read as follows:

“As of December 31, 2010, the effect of income tax on our discounted future net cash flows was $212.1 million, resulting in a Standardized Measure of $485.7 million.”

As a result, Standardized Measure at December 31, 2010 in the tables on pages 15 and 82 and each other location where such disclosure appears in the Preliminary Offering Memorandum will be increased to $485.7 million.

Risk Factors

The disclosure under “Risk Factors—We may be able to incur substantially more debt. This could exacerbate the risks associated with our indebtedness.” on page 18 of the Preliminary Offering Memorandum is supplemented with the following disclosure:

The disclosure under “Risk Factors—Payment of principal and interest on the notes will be effectively subordinated to our senior secured debt to the extent of the value of the assets securing that debt and structurally subordinated to the liabilities of any of our subsidiaries that do not guarantee the notes.” on page 18 of the Preliminary Offering Memorandum is supplemented with the following disclosure:

Annex B-4

The first sentence of the disclosure under “Risk Factors—Our level of indebtedness may increase and reduce our financial flexibility.” on page 37 of the Preliminary Offering Memorandum is amended to read as follows:

“At the closing of this offering, we expect to have up to $137.5 million available for future secured borrowings under our revolving credit facility, subject to periodic borrowing base redeterminations.”

Use of proceeds

The following disclosure under “Use of proceeds” on page 42 of the Preliminary Offering Memorandum and each other location where such disclosure may appear in the Preliminary Offering Memorandum are amended to read as follows:

“We estimate that the net proceeds from this offering will be approximately $390.0 million after deducting the initial purchasers’ discount and our estimated offering expenses.”

Capitalization

The following numbers in the “As adjusted for this offering” column of the table under “Capitalization” on page 43 of the Preliminary Offering Memorandum and each other location where such disclosure may appear in the Preliminary Offering Memorandum are amended to read as follows:


	As of September 30, 2010
	As adjusted for
	this offering
(Dollars in thousands, except share amounts)
Cash and cash equivalents(1)	$	659,623

Long-term debt:
Revolving credit facility(2)		—
7.25% Senior Notes due 2019		400,000

Total long-term debt		400,000

Stockholders’ equity:
Common stock, $0.01 par value; 300,000,000 shares authorized; 92,216,545 shares issued and outstanding		920
Additional paid-in-capital		639,559
Retained deficit		(94,432	)

Total stockholders’ equity		546,047

Total capitalization	$	946,047


(1)		Cash and cash equivalents at December 31, 2010 was $143.5 million.

(2)		On January 21, 2011, we entered into an amendment to our revolving credit facility in order to, among other things, increase the size of the facility from $250 million to $600 million and increase our borrowing base from $120 to $150 million. As a result of increasing the aggregate principal amount of notes offered hereby from $300 million to $400 million, our borrowing base will automatically decrease by $12.5 million to $137.5 million. Please read “Description of other indebtedness.”

Annex B-5

Management’s discussion and analysis of financial condition and results of operations

The disclosure under “Management’s discussion and analysis of financial condition and results of operations—Liquidity and capital resources” on page 61 of the Preliminary Offering Memorandum is supplemented with the following disclosure:

Description of other indebtedness

The disclosure under “Description of other indebtedness—Our revolving credit facility” on page 112 of the Preliminary Offering Memorandum is supplemented with the following disclosure:

Any disclaimer or other notice that may appear below is not applicable to this communication and should be disregarded. Such disclaimer or notice was automatically generated as a result of this communication being sent by Bloomberg or another email system.

Annex B-6

ANNEX C

Restrictions on Offers and Sales Outside the United States

In connection with offers and sales of the Securities outside the United States:

(a) Each Initial Purchaser acknowledges that the Securities have not been registered under the Securities Act and may not be offered or sold within the United States or to, or for the account or benefit of, U.S. persons except pursuant to an exemption from, or in transactions not subject to, the registration requirements of the Securities Act.

(b) Each Initial Purchaser, severally and not jointly, represents, warrants and agrees that:

(i) Such Initial Purchaser has offered and sold the Securities, and will offer and sell the Securities, (A) as part of their distribution at any time and (B) otherwise until 40 days after the later of the commencement of the offering of the Securities and the Closing Date, only in accordance with Regulation S under the Securities Act (“ Regulation S ”) or Rule 144A or any other available exemption from registration under the Securities Act.

(ii) None of such Initial Purchaser or any of its affiliates or any other person acting on its or their behalf has engaged or will engage in any directed selling efforts with respect to the Securities, and all such persons have complied and will comply with the offering restrictions requirement of Regulation S.

(iii) At or prior to the confirmation of sale of any Securities sold in reliance on Regulation S, such Initial Purchaser will have sent to each distributor, dealer or other person receiving a selling concession, fee or other remuneration that purchases Securities from it during the distribution compliance period a confirmation or notice to substantially the following effect:

“The Securities covered hereby have not been registered under the U.S. Securities Act of 1933, as amended (the “ Securities Act ”), and may not be offered or sold within the United States or to, or for the account or benefit of, U.S. persons (i) as part of their distribution at any time or (ii) otherwise until 40 days after the later of the commencement of the offering of the Securities and the date of original issuance of the Securities, except in accordance with Regulation S or Rule 144A or any other available exemption from registration under the Securities Act. Terms used above have the meanings given to them by Regulation S.”

(iv) Such Initial Purchaser has not and will not enter into any contractual arrangement with any distributor with respect to the distribution of the Securities, except with its affiliates or with the prior written consent of the Company.

Annex C-1

Terms used in paragraph (a) and this paragraph (b) and not otherwise defined in this Agreement have the meanings given to them by Regulation S.

(i) it has only communicated or caused to be communicated and will only communicate or cause to be communicated an invitation or inducement to engage in investment activity (within the meaning of Section 21 of the Financial Services and Markets Act of 2000 (the “ FSMA ”)) received by it in connection with the issue or sale of the Securities in circumstances in which Section 21(1) of the FSMA does not apply to the Company; and

(ii) it has complied and will comply with all applicable provisions of the FSMA with respect to anything done by it in relation to the Securities in, from or otherwise involving the United Kingdom.

(d) Each Initial Purchaser acknowledges that no action has been or will be taken by the Company that would permit a public offering of the Securities, or possession or distribution of any of the Time of Sale Information, the Offering Memorandum, any Issuer Written Communication or any other offering or publicity material relating to the Securities, in any country or jurisdiction where action for that purpose is required.

Annex C-2

Exhibit A

Form of Registration Rights Agreement

Form of Registration Rights Agreement

$400,000,000

OASIS PETROLEUM INC.

7.25% Senior Notes due 2019

Registration Rights Agreement

In consideration of the foregoing, the parties hereto agree as follows:

15. Definitions . As used in this Agreement, the following terms shall have the following meanings:

“ Additional Guarantor ” shall mean any subsidiary of the Company that executes a Subsidiary Guarantee under the Indenture after the date of this Agreement.

“ Business Day ” shall mean any day that is not a Saturday, Sunday or other day on which commercial banks in New York City are authorized or required by law to remain closed.

“ Company ” shall have the meaning set forth in the preamble and shall also include the Company’s successors.

“ Exchange Act ” shall mean the Securities Exchange Act of 1934, as amended from time to time.

“ Exchange Dates ” shall have the meaning set forth in Section 2(a)(ii) hereof.

Exhibit A-1