COLLATERAL AGREEMENT made by each of the Grantors (as defined herein) in favor of U.S. Bank National Association, as Collateral Agent Dated as of December 22, 2011

Exhibit 4.3

EXECUTION COPY

COLLATERAL AGREEMENT

made by

each of the Grantors (as defined herein)

in favor of

U.S. Bank National Association,

as Collateral Agent

Dated as of December 22, 2011

Notwithstanding anything herein to the contrary, the lien and security interest granted to the Collateral Agent pursuant to this Agreement and the exercise of any right or remedy by the Collateral Agent hereunder are subject to the provisions of the Intercreditor Agreement, dated as of December 22, 2011 (as amended, restated, supplemented or otherwise modified from time to time in accordance with the terms thereof, the “Intercreditor Agreement”), among Dune Energy, Inc., the other obligors from time to time party thereto, Bank of Montreal, in its capacity as the initial First-Lien Collateral Agent thereunder, and U.S. Bank National Association, as trustee, in its capacity as the initial Second-Lien Collateral Agent thereunder. In the event of any conflict between the terms of the Intercreditor Agreement and this Agreement, the terms of the Intercreditor Agreement shall govern and control.

TABLE OF CONTENTS


		Page
ARTICLE I	Definitions		1

Section 1.01	Definitions		1

Section 1.02	Other Definitional Provisions; References		3

ARTICLE II	Grant of Security Interest		4

Section 2.01	Grant of Security Interest		4

Section 2.02	Transfer of Pledged Securities		5

Section 2.03	Grantors Remain Liable under Accounts, Chattel Paper and Payment Intangibles		5

Section 2.04	Pledged Securities		6

ARTICLE III	Acknowledgments, Waivers and Consents		6

Section 3.01	Acknowledgments, Waivers and Consents		6

Section 3.02	No Subrogation, Contribution or Reimbursement		9

ARTICLE IV	Representations and Warranties		9

Section 4.01	Benefit to the Obligor		9

Section 4.02	Perfected Second Priority Liens		9

Section 4.03	Prior Names, Addresses, Locations of Tangible Assets		10

Section 4.04	Pledged Securities		10

Section 4.05	Instruments and Chattel Paper		10

ARTICLE V	Covenants		10

Section 5.01	Covenants in the Indenture		10

Section 5.02	Maintenance of Perfected Security Interest; Further Documentation		10

Section 5.03	Pledged Securities		11

Section 5.04	Commercial Tort Claims		12

ARTICLE VI	Remedial Provisions		13

Section 6.01	Pledged Securities		13

Section 6.02	Collections on Accounts, Etc.		14

Section 6.03	Proceeds		14

Section 6.04	Texas UCC and Other Remedies		15

Section 6.05	Private Sales of Pledged Securities		16

Section 6.06	Waiver; Deficiency		16

Section 6.07	Non-Judicial Enforcement		17


ARTICLE VII	The Collateral Agent	17

Section 7.01	Collateral Agent’s Appointment as Attorney-in-Fact, Etc.	17

Section 7.02	Duty of Collateral Agent	18

Section 7.03	Execution of Financing Statements	19

Section 7.04	Authority of Collateral Agent	19

ARTICLE VIII	Subordination of Indebtedness	20

Section 8.01	Subordination of All Guarantor Claims	20

Section 8.02	Claims in Bankruptcy	20

Section 8.03	Payments Held in Trust	20

Section 8.04	Liens Subordinate	21

Section 8.05	Notation of Records	21

ARTICLE IX	Miscellaneous	21

Section 9.01	Waiver	21

Section 9.02	Notices	21

Section 9.03	Amendments in Writing	21

Section 9.04	Successors and Assigns	21

Section 9.05	Invalidity	21

Section 9.06	Counterparts	22

Section 9.07	Survival	22

Section 9.08	Captions	22

Section 9.09	No Oral Agreements	22

Section 9.10	Governing Law; Submission to Jurisdiction	22

Section 9.11	Acknowledgments	23

Section 9.12	Additional Grantors	24

Section 9.13	Releases	24

Section 9.14	Reinstatement	25

Section 9.15	Acceptance	25

SCHEDULES:

Notice Addresses of Grantors

Description of Pledged Securities

Filings and Other Actions Required to Perfect Security Interests

Prior Names and Prior Chief Executive Office

ANNEX:

Form of Assumption Agreement

This COLLATERAL AGREEMENT, dated as of December 22, 2011, is made by Dune Energy, Inc., a Delaware corporation (the “Company”), and each of the other signatories hereto other than the Collateral Agent (the Company and each of the other signatories hereto other than the Collateral Agent, together with any other Subsidiary Guarantors (as defined below) that becomes a party hereto from time to time after the date hereof, the “Grantors”), in favor of U.S. Bank National Association, as Collateral Agent (in such capacity, together with its successors in such capacity, the “Collateral Agent”).

WHEREAS, the Company entered into an Indenture governing the Floating Rate Senior Secured Notes due 2016 (the “Notes”), dated as of December 22, 2011 (as amended, restated, supplemented or otherwise modified from time to time, the “Indenture”), with each of the Subsidiary Guarantors and the Collateral Agent;

WHEREAS, pursuant to the Credit Agreement of even date herewith (as amended, restated, supplemented or otherwise modified from time to time, the “Credit Agreement”), among the Company, the lenders party thereto from time to time, and Bank of Montreal, as administrative agent for the lenders (the “First-Lien Administrative Agent”), the Obligors (as defined below) have granted to the First Lien Administrative Agent a first-priority lien and security interest in the Collateral (as defined below);

WHEREAS, the First Lien Administrative Agent and the Collateral Agent have entered into an Intercreditor Agreement, dated as of December 22, 2011 (as amended, restated, supplemented or otherwise modified from time to time, the “Intercreditor Agreement”), pursuant to which the lien upon and security interest in the Collateral granted by this Agreement are and shall be subordinated in all respects to the lien upon and security interest in the Collateral granted pursuant to, and subject to the terms and conditions of, the First-Lien Security Documents (as defined therein); and

WHEREAS, the Indenture requires that the Grantors enter into this Agreement with the Collateral Agent;

NOW, THEREFORE, each Grantor hereby agrees with the Collateral Agent, for the ratable benefit of the Secured Parties (as defend below), as follows:

ARTICLE I

DEFINITIONS

Section 1.01 Definitions.

(a) As used in this Agreement, each term defined above shall have the meaning indicated above. Unless otherwise defined herein, capitalized terms used herein shall have the meanings assigned to them in the Indenture, and the following terms as well as all uncapitalized terms which are defined in the Texas UCC on the date hereof are used herein as so defined: Accounts, Chattel Paper, Commercial Tort Claims, Deposit Accounts, Documents, Electronic Chattel Paper, Equipment, General Intangibles, Goods, Instruments, Inventory, Investment Property, Letter-of-Credit Rights, Payment Intangibles, Proceeds, Supporting Obligations, and Tangible Chattel Paper.

(b) The following terms shall have the following meanings:

“Account Debtor” means a Person (other than any Grantor) obligated on an Account, Chattel Paper, or General Intangible.

“Agreement” means this Collateral Agreement, as the same may be amended, supplemented or otherwise modified from time to time.

“Collateral” shall have the meaning assigned such term in Section 3.01.

“Collateral Agent” means the party named as such in this Agreement until a successor replaces it and, thereafter, means such successor.

“Excluded Property” means (a) any Equipment subject to a purchase money security interest or equipment or capital lease (“Encumbered Equipment”) if and to the extent that the creation of a security interest in the right, title or interest of the Grantor in the Encumbered Equipment would cause or result in a default under any contractual provision or other restriction; (b) any rights or interest in any contract, license, permit or franchise covering real or personal property of the Grantor if, under the terms of the contract, license, permit or franchise or applicable law, the grant of a security interest or other Lien therein is prohibited as a matter of Law, or under the terms of the contract, license, permit or franchise and that prohibition has not been effectively waived or the consent of the other party(ies) to such contract, license, permit or franchise has not been obtained, but the foregoing exclusions in no way will be construed (i) to apply to the extent that any described prohibition is unenforceable under Section 9-406, 9-407, 9-408, or 9-409 of the UCC (as same may be limited by other applicable Law) or other applicable Law, or (ii) to limit, impair or otherwise affect the continuing security interests of the Secured Creditors in and Liens upon any rights or interests of the Grantors in or to (A) monies due or to become due under any described contract, license, permit or franchise (including any Accounts), or (B) any proceeds from the sale, license, lease, or other dispositions of any such contract or license; (c) leasehold interests; (d) assets subject to certificates of title; (e) “intent to use” trademark applications; and (f) assets as to which the First-Lien Administrative Agent and the Company (or the Collateral Agent and the Company if the First-Lien Obligations (as defined in the Intercreditor Agreement) are no longer outstanding) reasonably agree that the cost of obtaining a security interest or perfection thereof is excessive in relation to the benefit to the Holders of the security afforded thereby.

“Highest Lawful Rate” means the maximum nonusurious interest rate, if any, that at any time or from time to time may be contracted for, taken, reserved, charged or received on the Notes under laws applicable to the Company which are presently in effect or, to the extent allowed by law, under such applicable laws which may hereafter be in effect and which allow a higher maximum nonusurious interest rate than applicable laws allow as of the date hereof.

“Indenture Documents” means (a) the Indenture, the Notes, the Security Documents and the Subsidiary Guarantees and (b) any other related documents or instruments executed and delivered pursuant to the Indenture or any Security Document, in each case, as such agreements may be amended, restated, supplemented or otherwise modified from time to time.

“Issuers” means, collectively, each issuer of a Pledged Security.

“Obligor” means each Subsidiary of the Company which is or becomes liable for any First-Lien Obligations or Secured Obligations, whether directly, by guaranty, by grant of a Lien, or otherwise.

“Pledged Securities” means: (i) the equity interests described or referred to in Schedule 2; and (ii) (a) the certificates or instruments, if any, representing such equity interests, (b) all dividends (cash, stock or otherwise), cash, instruments, rights to subscribe, purchase or sell and all other rights and property from time to time received, receivable or otherwise distributed in respect of or in exchange for any or all of such equity interests, (c) all replacements, additions to and substitutions for any of the property referred to in this definition, including, without limitation, claims against third parties, (d) the proceeds, interest, profits and other income of or on any of the property referred to in this definition and (e) all books and records relating to any of the property referred to in this definition.

“Post-Default Rate” means the Applicable Interest Rate (as defined under the Indenture) plus two percent (2%) per annum, but in no event to exceed the Highest Lawful Rate.

“Secured Obligations” means, collectively, the obligations of the Grantor under this Agreement or any of the other Indenture Documents, including any Subsidiary Guarantor, to pay principal, premium, if any, and interest (including any interest accruing after the commencement of bankruptcy or insolvency proceedings) when due and payable, and all other amounts due or to become due under or in connection with the Indenture, the Notes and the performance of all other obligations to the Collateral Agent and the Holders under the Indenture and the Notes, according to the respective terms thereof.

“Secured Parties” means, collectively, the Holders and the Collateral Agent.

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

“Security Documents” means the Second-Lien Mortgages, this Agreement and any other agreement, document, mortgage or instrument pursuant to which a Lien is granted (or purported to be granted) by a Grantor securing any Secured Obligations or under which rights or remedies with respect to such Liens are governed, as the same may be amended, restated, supplemented, modified and/or Refinanced from time to time.

“Subsidiary Guarantor” has the meaning set forth in the Indenture.

“Texas UCC” means the Uniform Commercial Code, as it may be amended, from time to time in effect in the State of Texas.

Section 1.02 Other Definitional Provisions; References. The meanings given to terms defined herein shall be equally applicable to both the singular and plural forms of such terms. The gender of all words shall include the masculine, feminine, and neuter, as appropriate. The words “herein,” “hereof,” “hereunder” and other words of similar import when used in this Agreement refer to this Agreement as a whole, and not to any particular article, section or subsection. Any reference herein to a Section shall be deemed to refer to the applicable Section of this Agreement unless otherwise stated herein. Any reference herein to an exhibit, schedule or annex shall be deemed to refer to the applicable exhibit, schedule or annex attached hereto unless

otherwise stated herein. Where the context requires, terms relating to the Collateral or any part thereof, when used in relation to a Grantor, shall refer to such Grantor’s Collateral or the relevant part thereof.

ARTICLE II

GRANT OF SECURITY INTEREST

Section 2.01 Grant of Security Interest. Each Grantor hereby pledges, assigns, transfers and grants to the Collateral Agent, for the ratable benefit of the Secured Parties, a security interest in all of the following property now owned or at any time hereafter acquired by such Grantor or in which such Grantor now has or at any time in the future may acquire any right, title or interest and whether now existing or hereafter coming into existence (collectively, the “Collateral”), as collateral security for the prompt and complete payment and performance when due (whether at the stated maturity, by acceleration or otherwise) of the Secured Obligations:

(1) all Accounts;

(2) all Chattel Paper (whether Tangible Chattel Paper or Electronic Chattel Paper);

(3) all Commercial Tort Claims;

(4) all Deposit Accounts other than payroll, withholding tax and other fiduciary Deposit Accounts;

(5) all Documents;

(6) all General Intangibles (including, without limitation, rights in and under any Swap Agreements);

(7) all Goods (including, without limitation, all Inventory and all Equipment, but excluding all Fixtures);

(8) all Instruments;

(9) all Investment Property;

(10) all Letter-of-Credit Rights (whether or not the letter of credit is evidenced by a writing);

(11) all Pledged Securities;

(12) all Supporting Obligations;

(13) all books and records pertaining to the Collateral;

(14) to the extent not otherwise included, any other property insofar as it consists of personal property of any kind or character defined in and subject to the Texas UCC; and

(15) to the extent not otherwise included, all Proceeds and products of any and all of the foregoing and all collateral security, guarantees and other Supporting Obligations given with respect to any of the foregoing.

Notwithstanding anything to the contrary contained in clauses (1) through (15) above, the Collateral will not include any Excluded Property.

Section 2.02 Transfer of Pledged Securities.

(a) Subject to Section 2.02(b), all certificates and instruments representing or evidencing the Pledged Securities shall be delivered to and held pursuant hereto by the Collateral Agent or a Person designated by the Collateral Agent and, in the case of an instrument or certificate in registered form, shall be duly indorsed to the Collateral Agent or in blank by an effective indorsement (whether on the certificate or instrument or on a separate writing), and accompanied by any required transfer tax stamps to effect the pledge of the Pledged Securities to the Collateral Agent. Notwithstanding the preceding sentence, all Pledged Securities must be delivered or transferred in such manner, and each Grantor shall take all such further action as may be reasonably requested by the Collateral Agent, as to permit the Collateral Agent to be a “protected purchaser” to the extent of its security interest as provided in Section 8.303 of the Texas UCC (if the Collateral Agent otherwise qualifies as a protected purchaser).

(b) It is further acknowledged and agreed that notwithstanding anything to contrary herein by virtue of the execution and delivery by the Grantors of this Agreement and the Intercreditor Agreement, for so long as the First-Lien Obligations (as defined under the Intercreditor Agreement) remain outstanding, the delivery of any Collateral to the First-Lien Administrative Agent will satisfy the obligation under this Agreement to deliver the Collateral to the Collateral Agent. Upon such delivery in accordance with this Agreement and the Intercreditor Agreement, and the filing of any necessary financing statement covering such Collateral in the appropriate filing offices, the Collateral Agent will obtain, for the benefit of the Secured Parties, a legal, valid and perfected lien upon and security interest in such Collateral, subject only to Permitted Liens, as security for the payment and performance of the Secured Obligations.

Section 2.03 Grantors Remain Liable under Accounts, Chattel Paper and Payment Intangibles. Anything herein to the contrary notwithstanding, each Grantor shall remain liable under each of the Accounts, Chattel Paper and Payment Intangibles to observe and perform all the conditions and obligations to be observed and performed by it thereunder, all in accordance with the terms of any agreement giving rise to each such Account, Chattel Paper or Payment Intangible. Neither the Collateral Agent nor any other Secured Party shall have any obligation or liability under any Account, Chattel Paper or Payment Intangible (or any agreement giving rise thereto) by reason of or arising out of this Agreement or the receipt by the Collateral Agent or any such other Secured Party of any payment relating to such Account, Chattel Paper or Payment Intangible, pursuant hereto, nor shall the Collateral Agent or any other Secured Party be obligated in any manner to perform any of the obligations of any Grantor under or pursuant to any Account, Chattel Paper or Payment Intangible (or any agreement giving rise thereto), to make any payment, to make any inquiry as to the nature or the sufficiency of any payment received by it or as to the sufficiency of any performance by any party under any Account, Chattel Paper or Payment Intangible (or any agreement giving rise thereto), to present or file any claim, to take any action to enforce any performance or to collect the payment of any amounts which may have been assigned to it or to which it may be entitled at any time or times.

Section 2.04 Pledged Securities. The granting of the foregoing security interest does not make the Collateral Agent or any Secured Party a successor to Grantor as a partner or member in any Issuer that is a partnership, limited partnership or limited liability company, as applicable, and neither the Collateral Agent, any Secured Party, nor any of their respective successors or assigns hereunder shall be deemed to have become a partner or member in any Issuer, as applicable, by accepting this Agreement or exercising any right granted herein unless and until such time, if any, when any such Person expressly becomes a partner or member in any Issuer, as applicable, and complies with any applicable transfer provisions set forth in the charter or organizational documents relating to an applicable Pledged Security after a foreclosure thereon.

ARTICLE III

ACKNOWLEDGMENTS, WAIVERS AND CONSENTS

Section 3.01 Acknowledgments, Waivers and Consents.

(a) Each Grantor acknowledges and agrees that the obligations undertaken by it under this Agreement involve the guarantee and the provision of collateral security for the obligations of Persons other than such Grantor and that such Grantor’s guarantee and provision of collateral security for the Secured Obligations are absolute, irrevocable and unconditional under any and all circumstances. In full recognition and furtherance of the foregoing, each Grantor understands and agrees, to the fullest extent permitted under applicable law and except as may otherwise be expressly and specifically provided in the Indenture Documents, that each Grantor shall remain obligated hereunder (including, without limitation, with respect to the guarantee made by such Grantor hereby and the collateral security provided by such Grantor herein) and the enforceability and effectiveness of this Agreement and the liability of such Grantor, and the rights, remedies, powers and privileges of the Collateral Agent and the other Secured Parties under this Agreement and the other Indenture Documents shall not be affected, limited, reduced, discharged or terminated in any way:

(i) notwithstanding that, without any reservation of rights against any Grantor and without notice to or further assent by any Grantor, (A) any demand for payment of any of the Secured Obligations made by the Collateral Agent or any other Secured Party may be rescinded by the Collateral Agent or such other Secured Party and any of the Secured Obligations continued; (B) the Secured Obligations, the liability of any other Person upon or for any part thereof or any collateral security or guarantee therefor or right of offset with respect thereto, may, from time to time, in whole or in part, be renewed, extended, amended, modified, accelerated, compromised, waived, surrendered or released by, or any indulgence or forbearance in respect thereof granted by, the Collateral Agent or any other Secured Party; (C) the Indenture, the other Indenture Documents and any other documents executed and delivered in connection therewith may be

amended, modified, supplemented or terminated, in whole or in part, from time to time; (D) any Grantor or any other Person may from time to time accept or enter into new or additional agreements, security documents, guarantees or other instruments in addition to, in exchange for or relative to, any Indenture Document, all or any part of the Secured Obligations or any Collateral now or in the future serving as security for the Secured Obligations; (E) any collateral security, guarantee or right of offset at any time held by the Collateral Agent or any other Secured Party for the payment of the Secured Obligations may be sold, exchanged, waived, surrendered or released; and (F) any other event shall occur which constitutes a defense or release of sureties generally; and

(ii) without regard to, and each Grantor hereby expressly waives to the fullest extent permitted by law any defense now or in the future arising by reason of, (A) the illegality, invalidity or unenforceability of the Indenture, any other Indenture Document, any of the Secured Obligations or any other collateral security therefor or guarantee or right of offset with respect thereto at any time or from time to time held by the Collateral Agent or any other Secured Party, (B) any defense, set-off or counterclaim (other than a defense of payment or performance) which may at any time be available to or be asserted by any Grantor or any other Person against the Collateral Agent or any other Secured Party, (C) the insolvency, bankruptcy arrangement, reorganization, adjustment, composition, liquidation, disability, dissolution or lack of power of any Grantor or any other Person at any time liable for the payment of all or part of the Secured Obligations or the failure of the Collateral Agent or any other Secured Party to file or enforce a claim in bankruptcy or other proceeding with respect to any Person; or any sale, lease or transfer of any or all of the assets of the any Grantor, or any changes in the shareholders of any Grantor; (D) the fact that any Collateral or Lien contemplated or intended to be given, created or granted as security for the repayment of the Secured Obligations shall not be properly perfected or created, or shall prove to be unenforceable or subordinate to any other Lien, it being recognized and agreed by each of the Grantors that it is not entering into this Agreement in reliance on, or in contemplation of the benefits of, the validity, enforceability, collectability or value of any of the Collateral for the Secured Obligations; (E) any failure of the Collateral Agent or any other Secured Party to marshal assets in favor of any Grantor or any other Person, to exhaust any collateral for all or any part of the Secured Obligations, to pursue or exhaust any right, remedy, power or privilege it may have against any Grantor or any other Person or to take any action whatsoever to mitigate or reduce any Grantor’s liability under this Agreement or any other Indenture Document; (F) any law which provides that the obligation of a surety or guarantor must neither be larger in amount nor in other respects more burdensome than that of the principal or which reduces a surety’s or guarantor’s obligation in proportion to the principal obligation; (G) the possibility that the Secured Obligations may at any time and from time to time exceed the aggregate liability of such Grantor under this Agreement; or (H) any other circumstance or act whatsoever (with or without notice to or knowledge of any Grantor), which constitutes, or might be construed to constitute, an equitable or legal discharge or defense of the Company for the

Secured Obligations, or of such Grantor under the guarantee contained in Article II or with respect to the collateral security provided by such Grantor herein, or which might be available to a surety or guarantor, in bankruptcy or in any other instance.

(b) Each Grantor hereby waives to the extent permitted by law: (i) except as expressly provided otherwise in any Indenture Document, all notices to such Grantor, or to any other Person, including but not limited to, notices of the acceptance of this Agreement, the guarantee contained in Article II or the provision of collateral security provided herein, or the creation, renewal, extension, modification, accrual of any Secured Obligations, or notice of or proof of reliance by the Collateral Agent or any other Secured Party upon the guarantee contained in Article II or upon the collateral security provided herein, or of default in the payment or performance of any of the Secured Obligations owed to the Collateral Agent or any other Secured Party and enforcement of any right or remedy with respect thereto; or notice of any other matters relating thereto; the Secured Obligations, and any of them, shall conclusively be deemed to have been created, contracted or incurred, or renewed, extended, amended or waived, in reliance upon the guarantee contained in Article II and the collateral security provided herein and no notice of creation of the Secured Obligations or any extension of credit already or hereafter contracted by or extended to the Company need be given to any Grantor; and all dealings between the Company and any of the Grantors, on the one hand, and the Collateral Agent and the other Secured Parties, on the other hand, likewise shall be conclusively presumed to have been had or consummated in reliance upon the guarantee contained in Article II and on the collateral security provided herein; (ii) diligence and demand of payment, presentment, protest, dishonor and notice of dishonor; (iii) any statute of limitations affecting any Grantor’s liability hereunder or the enforcement thereof; (iv) all rights of revocation with respect to the Secured Obligations, the guarantee contained in Article II and the provision of collateral security herein; and (v) all principles or provisions of law which conflict with the terms of this Agreement and which can, as a matter of law, be waived.

(c) When making any demand hereunder or otherwise pursuing its rights and remedies hereunder against any Grantor, the Collateral Agent or any other Secured Party may, but shall be under no obligation to, join or make a similar demand on or otherwise pursue or exhaust such rights and remedies as it may have against the Company, any other Grantor or any other Person or against any collateral security or guarantee for the Secured Obligations or any right of offset with respect thereto, and any failure by the Collateral Agent or any other Secured Party to make any such demand, to pursue such other rights or remedies or to collect any payments from the Company, any other Grantor or any other Person or to realize upon any such collateral security or guarantee or to exercise any such right of offset, or any release of the Company, any Grantor or any other Person or any such collateral security, guarantee or right of offset, shall not relieve any Grantor of any obligation or liability hereunder, and shall not impair or affect the rights and remedies, whether express, implied or available as a matter of law, of the Collateral Agent or any other Secured Party against any Grantor. For the purposes hereof “demand” shall include the commencement and continuance of any legal proceedings. Neither the Collateral Agent nor any other Secured Party shall have any obligation to protect, secure, perfect or insure any Lien at any time held by it as security for the Secured Obligations or for the guarantee contained in Article II or any property subject thereto.

Section 3.02 No Subrogation, Contribution or Reimbursement. Notwithstanding any payment made by any Grantor hereunder or any set-off or application of funds of any Grantor by the Collateral Agent or any other Secured Party, no Grantor shall be entitled to be subrogated to any of the rights of the Collateral Agent or any other Secured Party against the Company or any other Grantor or any collateral security or guarantee or right of offset held by the Collateral Agent or any other Secured Party for the payment of the Secured Obligations, nor shall any Grantor seek or be entitled to seek any indemnity, exoneration, participation, contribution or reimbursement from the Company or any other Grantor in respect of payments made by such Grantor hereunder, and each Grantor hereby expressly agrees not to exercise any all such rights of subrogation, reimbursement, indemnity and contribution until all Secured Obligations then due shall have been paid. The Collateral Agent, for the benefit of the Secured Parties, may use, sell or dispose of any item of Collateral or security as it sees fit without regard to any subrogation rights any Grantor may have, and upon any disposition or sale, any rights of subrogation any Grantor may have shall terminate.

ARTICLE IV

REPRESENTATIONS AND WARRANTIES

To induce the Collateral Agent and the other Secured Parties to enter into the Indenture, each Grantor hereby represents and warrants to the Collateral Agent and each other Secured Party that:

Section 4.01 Benefit to the Obligor. The Company is a member of an affiliated group of companies that includes each Obligor, and the Company and the Obligors are engaged in related business. Each Obligor is a Subsidiary of the Company and its guaranty and surety obligations pursuant to this Agreement reasonably may be expected to benefit, directly or indirectly, it; and it has determined that this Agreement is necessary and convenient to the conduct, promotion and attainment of the business of such Obligor and the Company.

Section 4.02 Perfected Second Priority Liens. The security interests granted pursuant to this Agreement (a) upon completion of the filings and other actions specified on Schedule 3 (which, in the case of all filings and other documents referred to on said Schedule, have been delivered to the Collateral Agent in completed and duly executed form) will constitute valid perfected security interests in favor of the Collateral Agent in all of the Collateral in which a security interest may be perfected by filing under the Uniform Commercial Code or by possession, for the ratable benefit of the Secured Parties, as collateral security for such Grantor’s obligations, enforceable in accordance with the terms hereof against all creditors of such Grantor and any Persons purporting to purchase any Collateral from such Grantor and (b) are prior to all other Liens on the Collateral in existence on the date hereof except for Excepted Liens which have priority by operation of law.

Section 4.03 Prior Names, Addresses, Locations of Tangible Assets. Schedule 4 correctly sets forth (a) all names that such Grantor has used in the last five years and (b) the chief executive office of such Grantor over the last five years.

Section 4.04 Pledged Securities. The shares (or such other interests) of Pledged Securities pledged by such Grantor hereunder constitute all the issued and outstanding shares (or such other interests) of all classes of the capital stock or other equity interests of each Issuer owned by such Grantor. All the shares (or such other interests) of the Pledged Securities have been duly and validly issued and are fully paid and nonassessable; and such Grantor is the record and beneficial owner of, and has good title to, the Pledged Securities pledged by it hereunder, free of any and all Liens except Excepted Liens or options in favor of, or claims of, any other Person, except the security interest created by this Agreement.

Section 4.05 Instruments and Chattel Paper. Subject to Section 2.02 (b) hereof, such Grantor has delivered to the Collateral Agent all Collateral constituting Instruments and Chattel Paper having a value in excess of $500,000. No Collateral constituting Chattel Paper or Instruments contains any statement therein to the effect that such Collateral has been assigned to an identified party other than the Collateral Agent, and the grant of a security interest in such Collateral in favor of the Collateral Agent hereunder does not violate the rights of any other Person as a secured party.

ARTICLE V

COVENANTS

Each Grantor covenants and agrees with the Collateral Agent and the other Secured Parties that, from and after the date of this Agreement until Secured Obligations (other than amounts in respect of indemnification, expense, reimbursement or tax gross up for which no claim has been made) shall have been paid in full:

Section 5.01 Covenants in the Indenture. In the case of each Obligor, such Obligor shall take, or shall refrain from taking, as the case may be, each action that is necessary to be taken or not taken, as the case may be, so that no Default or Event of Default is caused by the failure to take such action or to refrain from taking such action by such Obligor or any of its Subsidiaries.

Section 5.02 Maintenance of Perfected Security Interest; Further Documentation.

(a) Such Grantor shall maintain the security interest created by this Agreement as a perfected security interest having at least the priority described in Section 5.03 and shall defend such security interest against the claims and demands of all Persons whomsoever except for Liens permitted by Section 4.08 of the Indenture.

(b) At any time and from time to time, upon the reasonable request of the Collateral Agent or any other Secured Party, and at the sole expense of such Grantor, such Grantor will promptly and duly give, execute, deliver, indorse, file or record any and all financing statements, continuation statements, amendments, notices (including, without limitation, notifications to financial institutions and any other Person), contracts,

agreements, assignments, certificates, stock powers or other instruments, obtain any and all governmental approvals and consents and take or cause to be taken any and all steps or acts that may be necessary or advisable or as the Collateral Agent may reasonably request to create, perfect, establish the priority of, or to preserve the validity, perfection or priority of, the Liens granted by this Agreement or to enable the Collateral Agent or any other Secured Party to enforce its rights, remedies, powers and privileges under this Agreement with respect to such Liens or to otherwise obtain or preserve the full benefits of this Agreement and the rights, powers and privileges herein granted.

(c) Notwithstanding the foregoing, no Grantor shall be required to perfect the security interest of the Secured Creditors in any Deposit Accounts, Securities Accounts, Commodities Accounts unless (i) an Event of Default exists and (ii) the Collateral Agent has notified the Company that it elects to have its security interest in such assets perfected.

Section 5.03 Pledged Securities.

(a) If such Grantor shall become entitled to receive or shall receive any stock certificate or other instrument (including, without limitation, any certificate or instrument representing a dividend or a distribution in connection with any reclassification, increase or reduction of capital or any certificate or instrument issued in connection with any reorganization), option or rights in respect of the capital stock or other equity interests of any Company, whether in addition to, in substitution of, as a conversion of, or in exchange for, any shares (or such other interests) of the Pledged Securities, or otherwise in respect thereof, subject to Section 2.02(b) hereof, such Grantor shall accept the same as the agent of the Collateral Agent and the other Secured Parties, hold the same in trust for the Collateral Agent and the other Secured Parties and deliver the same forthwith to the Collateral Agent in the exact form received, duly indorsed by such Grantor to the Collateral Agent, if required, together with an undated stock power or other equivalent instrument of transfer acceptable to the Collateral Agent covering such certificate or instrument duly executed in blank by such Grantor and with, if the Collateral Agent so requests, signature guaranteed, to be held by the Collateral Agent, subject to the terms hereof, as additional collateral security for the Secured Obligations.

(b) Without the prior written consent of the Collateral Agent, such Grantor will not (i) unless otherwise permitted hereby, vote to enable, or take any other action to permit, any Company to issue any stock or other equity interests of any nature or to issue any other securities or interests convertible into or granting the right to purchase or exchange for any stock or other equity interests of any nature of any Company, (ii) sell, assign, transfer, exchange or otherwise dispose of, or grant any option with respect to, the Pledged Securities or Proceeds thereof (except pursuant to a transaction permitted by the Indenture), (iii) except for Liens permitted by Section 9.03 of the Credit Agreement and Section 4.08 of the Indenture, create, incur or permit to exist any Lien or option in favor of, or any claim of any Person with respect to, any of the Pledged Securities or Proceeds thereof, or any interest therein, except for the security interests created by this Agreement or (iv) except as permitted by the Credit Agreement, enter into any agreement or undertaking restricting the right or ability of such Grantor or the Collateral Agent to sell, assign or transfer any of the Pledged Securities or Proceeds thereof.

(c) In the case of each Grantor which is an Issuer, such Issuer agrees that (i) it will be bound by the terms of this Agreement relating to the Pledged Securities issued by it and will comply with such terms insofar as such terms are applicable to it, (ii) it will notify the Collateral Agent promptly in writing of the occurrence of any of the events described in Section 6.03(a) with respect to the Pledged Securities issued by it and (iii) the terms of Section 7.01(c) and Section 7.05 shall apply to it, mutatis mutandis, with respect to all actions that may be required of it pursuant to Section 7.01(c) or Section 7.05 with respect to the Pledged Securities issued by it.

(d) Such Grantor shall furnish to the Collateral Agent such stock powers and other equivalent instruments of transfer as may be required by the Collateral Agent to assure the transferability of and the perfection of the security interest in the Pledged Securities when and as often as may be reasonably requested by the Collateral Agent.

(e) The Pledged Securities will at all times constitute not less than 100% of the capital stock or other equity interests of the Issuer thereof owned by any Grantor. Each Grantor will not permit any Issuer of any of the Pledged Securities to issue any new shares (or other interests) of any class of capital stock or other equity interests of such Issuer without the prior written consent of the Collateral Agent unless immediately upon issuance the same are pledged and, if applicable, delivered to Collateral Agent pursuant to the terms hereof and subject to Section 2.02(b) hereof to the extent necessary to give Collateral Agent a second priority security interest after such issue in at least the same percentage of such Issuer’s outstanding shares or other interests as Grantor had before such issue.

Section 5.04 Commercial Tort Claims. If such Grantor shall at any time hold or acquire a Commercial Tort Claim that satisfies the requirements of the following sentence, such Grantor shall, within thirty (30) days after such Commercial Tort Claim satisfies such requirements, notify the Collateral Agent and the other Secured Parties in a writing signed by such Grantor containing a brief description thereof, and granting to the Collateral Agent in such writing (for the benefit of the Secured Parties) a security interest therein and in the Proceeds thereof, all upon the terms of this Agreement, with such writing to be in form and substance reasonably satisfactory to the Collateral Agent and the other Secured Parties. The provisions of the preceding sentence shall apply only to a Commercial Tort Claim that satisfies the following requirements: (a) the monetary value claimed by or payable to the relevant Grantor in connection with such Commercial Tort Claim shall exceed $1,000,000, and either (b) (i) such Grantor shall have filed a law suit or counterclaim or otherwise commenced legal proceedings (including, without limitation, arbitration proceedings) against the Person against whom such Commercial Tort Claim is made, or (ii) such Grantor and the Person against whom such Commercial Tort Claim is asserted shall have entered into a settlement agreement with respect to such Commercial Tort Claim. In addition, to the extent that the existence of any Commercial Tort Claim held or acquired by any Grantor is disclosed by such Grantor in any public filing with the Securities Exchange Commission or any successor thereto or analogous Governmental Authority, or to the extent that the existence of any such Commercial Tort Claim is disclosed in

any press release issued by any Grantor, then, upon the request of the Collateral Agent, the relevant Grantor shall, within thirty (30) days after such request is made, transmit to the Collateral Agent and the other Secured Parties a writing signed by such Grantor containing a brief description of such Commercial Tort Claim and granting to the Collateral Agent in such writing (for the benefit of the Secured Parties) a security interest therein and in the Proceeds thereof, all upon the terms of this Agreement, with such writing to be in form and substance reasonably satisfactory to the Collateral Agent and the other Secured Parties.

ARTICLE VI

REMEDIAL PROVISIONS

Section 6.01 Pledged Securities.

(a) Unless an Event of Default shall have occurred and be continuing and the Collateral Agent shall have given notice to the relevant Grantor of the Collateral Agent’s intent to exercise its corresponding rights pursuant to Section 7.01(b), each Grantor shall be permitted to receive all dividends paid in respect of the Pledged Securities, to the extent permitted in the Indenture, and to exercise all voting and corporate rights with respect to the Pledged Securities.

(b) Upon (i) the occurrence and during the continuance of an Event of Default and (ii) delivery of written notice by the Collateral Agent to the Company, with a copy to the issuer of equity interests owned by any Grantor, directing the Grantors to refrain from voting those equity interests, (i) the Collateral Agent shall have the right to receive any and all cash dividends, payments or other Proceeds paid in respect of the Pledged Securities and make application thereof to the Secured Obligations in accordance with Section 10.02 of the Indenture, and (ii) any or all of the Pledged Securities shall be registered in the name of the Collateral Agent or its nominee, and the Collateral Agent or its nominee may thereafter exercise (A) all voting, corporate and other rights pertaining to such Pledged Securities at any meeting of shareholders (or other equivalent body) of the relevant Issuer or Issuers or otherwise and (B) any and all rights of conversion, exchange and subscription and any other rights, privileges or options pertaining to such Pledged Securities as if it were the absolute owner thereof (including, without limitation, the right to exchange at its discretion any and all of the Pledged Securities upon the merger, consolidation, reorganization, recapitalization or other fundamental change in the organizational structure of any Issuer, or upon the exercise by any Grantor or the Collateral Agent of any right, privilege or option pertaining to such Pledged Securities, and in connection therewith, the right to deposit and deliver any and all of the Pledged Securities with any committee, depositary, transfer agent, registrar or other designated agency upon such terms and conditions as the Collateral Agent may determine), all without liability except to account for property actually received by it, but the Collateral Agent shall have no duty to any Grantor to exercise any such right, privilege or option and shall not be responsible for any failure to do so or delay in so doing.

(c) Each Grantor hereby authorizes and instructs each Issuer of any Pledged Securities pledged by such Grantor hereunder (and each Issuer party hereto hereby agrees) to (i) comply with any instruction received by it from the Collateral Agent in writing that (A) states that an Event of Default has occurred and is continuing and (B) is otherwise in accordance with the terms of this Agreement, without any other or further instructions from such Grantor, and each Grantor agrees that each Issuer shall be fully protected in so complying, and (ii) unless otherwise expressly permitted hereby, pay any dividends or other payments with respect to the Pledged Securities directly to the Collateral Agent.

(d) After the occurrence and during the continuation of an Event of Default, if the Company of any Pledged Securities is the subject of bankruptcy, insolvency, receivership, custodianship or other proceedings under the supervision of any Governmental Authority, then all rights of the Grantor in respect thereof to exercise the voting and other consensual rights which such Grantor would otherwise be entitled to exercise with respect to the Pledged Securities issued by such Issuer shall cease, and all such rights shall thereupon become vested in the Collateral Agent who shall thereupon have the sole right to exercise such voting and other consensual rights, but the Collateral Agent shall have no duty to exercise any such voting or other consensual rights and shall not be responsible for any failure to do so or delay in so doing.

Section 6.02 Collections on Accounts, Etc. The Collateral Agent hereby authorizes each Grantor to collect upon the Accounts, Instruments, Chattel Paper and Payment Intangibles, and the Collateral Agent may curtail or terminate said authority at any time after the occurrence and during the continuance of an Event of Default. Upon the request of the Collateral Agent at any time after the occurrence and during the continuance of an Event of Default, each Grantor shall notify the Account Debtors that the applicable Accounts, Chattel Paper and Payment Intangibles have been assigned to the Collateral Agent for the ratable benefit of the Secured Parties and that payments in respect thereof shall be made directly to the Collateral Agent. During the existence of an Event of Default, the Collateral Agent may in its own name or in the name of others communicate with the Account Debtors to verify with them to its satisfaction the existence, amount and terms of any Accounts, Chattel Paper or Payment Intangibles.

Section 6.03 Proceeds. If required by the Collateral Agent at any time after the occurrence and during the continuance of an Event of Default, any payments of Accounts, Instruments, Chattel Paper and Payment Intangibles, when collected or received by each Grantor, and any other cash or non-cash Proceeds received by each Grantor upon the sale or other disposition of any Collateral, shall be forthwith (and, in any event, within two Business Days) deposited by such Grantor in the exact form received, duly indorsed by such Grantor to the Collateral Agent if required, in a special collateral account maintained by the Collateral Agent, subject to withdrawal by the Collateral Agent for the ratable benefit of the Secured Parties only, as hereinafter provided, and, until so turned over, shall be held by such Grantor in trust for the Collateral Agent for the ratable benefit of the Secured Parties, segregated from other funds of any such Grantor. Each deposit of any such Proceeds shall be accompanied by a report identifying in reasonable detail the nature and source of the payments included in the deposit. All Proceeds (including, without limitation, Proceeds constituting collections of Accounts, Chattel Paper, Instruments) while held by the Collateral Agent (or by any Grantor in trust for the Collateral Agent for the ratable benefit of the Secured Parties) shall continue to be collateral security for all of the Secured Obligations and shall not constitute payment thereof until applied as hereinafter provided. At such intervals as may be agreed upon by each Grantor and the Collateral Agent, or, if an Event of Default shall have occurred and be continuing, at any time at the Collateral Agent’s election, the Collateral Agent shall apply all or any part of the funds on deposit in said special collateral account on account of the Secured Obligations in such order as the

Collateral Agent may elect, and any part of such funds which the Collateral Agent elects not so to apply and deems not required as collateral security for the Secured Obligations shall be paid over from time to time by the Collateral Agent to each Grantor or to whomsoever may be lawfully entitled to receive the same.

Section 6.04 Texas UCC and Other Remedies.

(a) If an Event of Default shall occur and be continuing, the Collateral Agent, on behalf of the Secured Parties, may exercise in its discretion, in addition to all other rights, remedies, powers and privileges granted to them in this Agreement, the other Indenture Documents and in any other instrument or agreement securing, evidencing or relating to the Secured Obligations, all rights, remedies, powers and privileges of a secured party under the Texas UCC (whether the Texas UCC is in effect in the jurisdiction where such rights, remedies, powers or privileges are asserted) or any other applicable law or otherwise available at law or equity. Without limiting the generality of the foregoing, the Collateral Agent, without demand of performance or other demand, presentment, protest, advertisement or notice of any kind (except any notice required by law) to or upon any Grantor or any other Person (all and each of which demands, defenses, advertisements and notices are hereby waived), may in such circumstances forthwith collect, receive, appropriate and realize upon the Collateral, or any part thereof, and/or may forthwith sell, lease, assign, give option or options to purchase, or otherwise dispose of and deliver the Collateral or any part thereof (or contract to do any of the foregoing), in one or more parcels at public or private sale or sales, at any exchange, broker’s board or office of the Collateral Agent or any other Secured Party or elsewhere upon such terms and conditions as it may deem advisable and at such prices as it may deem best, for cash or on credit or for future delivery without assumption of any credit risk. The Collateral Agent or any other Secured Party shall have the right upon any such public sale or sales, and, to the extent permitted by law, upon any such private sale or sales, to purchase the whole or any part of the Collateral so sold, free of any right or equity of redemption in any Grantor, which right or equity is hereby waived and released. If an Event of Default shall occur and be continuing, each Grantor further agrees, at the Collateral Agent’s request, to assemble the Collateral and make it available to the Collateral Agent at places which the Collateral Agent shall reasonably select, whether at such Grantor’s premises or elsewhere. Any such sale or transfer by the Collateral Agent either to itself or to any other Person shall be absolutely free from any claim of right by Grantor, including any equity or right of redemption, stay or appraisal which Grantor has or may have under any rule of law, regulation or statute now existing or hereafter adopted. Upon any such sale or transfer, the Collateral Agent shall have the right to deliver, assign and transfer to the purchaser or transferee thereof the Collateral so sold or transferred. The Collateral Agent shall apply the net proceeds of any action taken by it pursuant to this Section 7.04, after deducting all reasonable costs and expenses of every kind incurred in connection therewith or incidental to the care or safekeeping of any of the Collateral or in any way relating to the Collateral or the rights of the Collateral Agent and the other Secured Parties hereunder, including, without limitation, reasonable

attorneys’ fees and disbursements, to the payment in whole or in part of the Secured Obligations, in accordance with Section 10.02 of the Indenture, and only after such application and after the payment by the Collateral Agent of any other amount required by any provision of law, including, without limitation, Section 9.615 of the Texas UCC, need the Collateral Agent account for the surplus, if any, to any Grantor. To the extent permitted by applicable law, each Grantor waives all claims, damages and demands it may acquire against the Collateral Agent or any other Secured Party arising out of the exercise by them of any rights hereunder. If any notice of a proposed sale or other disposition of Collateral shall be required by law, such notice shall be deemed reasonable and proper if given at least 10 days before such sale or other disposition.

(b) In the event that the Collateral Agent elects not to sell the Collateral, the Collateral Agent retains its rights to dispose of or utilize the Collateral or any part or parts thereof in any manner authorized or permitted by law or in equity, and to apply the proceeds of the same towards payment of the Secured Obligations. Each and every method of disposition of the Collateral described in this Agreement shall constitute disposition in a commercially reasonable manner. The Collateral Agent may appoint any Person as agent to perform any act or acts necessary or incident to any sale or transfer of the Collateral.

Section 6.05 Private Sales of Pledged Securities. Each Grantor recognizes that the Collateral Agent may be unable to effect a public sale of any or all the Pledged Securities, by reason of certain prohibitions contained in the Securities Act and applicable state securities laws or otherwise, and may be compelled to resort to one or more private sales thereof to a restricted group of purchasers which will be obliged to agree, among other things, to acquire such securities for their own account for investment and not with a view to the distribution or resale thereof. Each Grantor acknowledges and agrees that any such private sale may result in prices and other terms less favorable than if such sale were a public sale and, notwithstanding such circumstances, agrees that any such private sale shall be deemed to have been made in a commercially reasonable manner. The Collateral Agent shall be under no obligation to delay a sale of any of the Pledged Securities for the period of time necessary to permit the Company thereof to register such securities for public sale under the Securities Act, or under applicable state securities laws, even if such Company would agree to do so. Each Grantor agrees to use its commercially reasonable efforts to do or cause to be done all such other acts as may reasonably be necessary to make such sale or sales of all or any portion of the Pledged Securities pursuant to this Section 7.05 valid and binding and in compliance with any and all other applicable Governmental Requirements, but no Grantor will be required to register any of the Pledged Securities under the Securities Act.

Section 6.06 Waiver; Deficiency. To the extent permitted by applicable law, each Grantor waives and agrees not to assert any rights or privileges which it may acquire under the Texas UCC or any other applicable law. Each Grantor shall remain liable for any deficiency if the proceeds of any sale or other disposition of the Collateral are insufficient to pay its Secured Obligations and the documented fees and disbursements of any attorneys employed by the Collateral Agent or any other Secured Party to collect such deficiency.

Section 6.07 Non-Judicial Enforcement. The Collateral Agent may enforce its rights hereunder without prior judicial process or judicial hearing, and to the extent permitted by law, each Grantor expressly waives any and all legal rights which might otherwise require the Collateral Agent to enforce its rights by judicial process.

ARTICLE VII

THE COLLATERAL AGENT

Section 7.01 Collateral Agent’s Appointment as Attorney-in-Fact, Etc.

(a) Each Grantor hereby irrevocably constitutes and appoints the Collateral Agent and any officer or agent thereof, with full power of substitution, as its true and lawful attorney-in-fact with full irrevocable power and authority in the place and stead of such Grantor and in the name of such Grantor or in its own name, for the purpose of carrying out the terms of this Agreement, to take any and all reasonably appropriate action and to execute any and all documents and instruments which may be reasonably necessary or desirable to accomplish the purposes of this Agreement, and, without limiting the generality of the foregoing, each Grantor hereby gives the Collateral Agent the power and right, on behalf of such Grantor, without notice to or assent by such Grantor, to do any or all of the following:

(i) unless being disputed under Section 4.08 of the Indenture, pay or discharge taxes and Liens levied or placed on or threatened against the Collateral, effect any repairs or any insurance called for by the terms of this Agreement and pay all or any part of the premiums therefor and the costs thereof;

(ii) execute, in connection with any sale provided for in Section 7.04 or Section 7.05, any endorsements, assignments or other instruments of conveyance or transfer with respect to the Collateral; and

(iii) (A) direct any party liable for any payment under any of the Collateral to make payment of any and all moneys due or to become due thereunder directly to the Collateral Agent or as the Collateral Agent shall direct; (B) take possession of and indorse and collect any checks, drafts, notes, acceptances or other instruments for the payment of moneys due under any Account, Instrument, General Intangible, Chattel Paper or Payment Intangible or with respect to any other Collateral, and to file any claim or to take any other action or proceeding in any court of law or equity or otherwise deemed appropriate by the Collateral Agent for the purpose of collecting any and all such moneys due under any Account, Instrument or General Intangible or with respect to any other Collateral whenever payable; (C) ask or demand for, collect, and receive payment of and receipt for, any and all moneys, claims and other amounts due or to become due at any time in respect of or arising out of any Collateral; (D) sign and indorse any invoices, freight or express bills, bills of lading, storage or warehouse receipts, drafts against debtors, assignments, verifications, notices and other documents in connection with any of the Collateral; (E) receive, change the address for delivery, open and dispose of mail addressed to any Grantor, and to

execute, assign and indorse negotiable and other instruments for the payment of money, documents of title or other evidences of payment, shipment or storage for any form of Collateral on behalf of and in the name of any Grantor; (F) commence and prosecute any suits, actions or proceedings at law or in equity in any court of competent jurisdiction to collect the Collateral or any portion thereof and to enforce any other right in respect of any Collateral; (G) defend any suit, action or proceeding brought against such Grantor with respect to any Collateral; (H) settle, compromise or adjust any such suit, action or proceeding and, in connection therewith, give such discharges or releases as the Collateral Agent may deem appropriate; and (I) generally, sell, transfer, pledge and make any agreement with respect to or otherwise deal with any of the Collateral as fully and completely as though the Collateral Agent were the absolute owner thereof for all purposes, and do, at the Collateral Agent’s option and such Grantor’s expense, at any time, or from time to time, all acts and things which the Collateral Agent deems necessary to protect, preserve or realize upon the Collateral and the Collateral Agent’s and the other Secured Parties’ security interests therein and to effect the intent of this Agreement, all as fully and effectively as such Grantor might do.

Anything in this Section 8.01(a) to the contrary notwithstanding, the Collateral Agent agrees that it will not exercise any rights under the power of attorney provided for in this Section 8.01(a) unless an Event of Default shall have occurred and be continuing.

(b) If any Grantor fails to perform or comply with any of its agreements contained herein within the applicable grace periods, the Collateral Agent, at its option, but without any obligation so to do, may perform or comply, or otherwise cause performance or compliance, with such agreement.

(c) The expenses of the Collateral Agent incurred in connection with actions undertaken as provided in this Section 8.01, together with interest thereon at the Post-Default Rate from the date of payment by the Collateral Agent to the date reimbursed by the relevant Grantor, shall be payable by such Grantor to the Collateral Agent on demand.

(d) Each Grantor hereby ratifies all that said attorneys shall lawfully do or cause to be done by virtue and in compliance hereof. All powers, authorizations and agencies contained in this Agreement are coupled with an interest and are irrevocable until this Agreement is terminated and the security interests created hereby are released.

Section 7.02 Duty of Collateral Agent. The Collateral Agent’s sole duty with respect to the custody, safekeeping and physical preservation of the Collateral in its possession, under Section 9.207 of the Texas UCC or otherwise, shall be to deal with it in the same manner as the Collateral Agent deals with similar property for its own account and shall be deemed to have exercised reasonable care in the custody and preservation of the Collateral in its possession if the Collateral is accorded treatment substantially equal to that which comparable secured parties accord comparable collateral. Neither the Collateral Agent, any other Secured Party nor any of their respective officers, directors, employees or agents shall be liable for failure to demand, collect or realize upon any of the Collateral or for any delay in doing so or shall be under any

obligation to sell or otherwise dispose of any Collateral upon the request of any Grantor or any other Person or to take any other action whatsoever with regard to the Collateral or any part thereof. The powers conferred on the Collateral Agent and the other Secured Parties hereunder are solely to protect the Collateral Agent’s and the other Secured Parties’ interests in the Collateral and shall not impose any duty upon the Collateral Agent or any other Secured Party to

exercise any such powers. The Collateral Agent and the other Secured Parties shall be accountable only for amounts that they actually receive as a result of the exercise of such powers, and neither they nor any of their officers, directors, employees or agents (collectively, the “Indemnitees”) shall be responsible to any Grantor for any act or failure to act hereunder, Notwithstanding the sole or concurrent negligence of every kind or character whatsoever, whether active or passive, whether an affirmative act or an omission, including without limitation, all types of negligent conduct identified in the restatement (second) of torts of one or more of the indemnitees or by reason of strict liability imposed without fault on any one or more of the indemnitees; provided that such exculpation shall not, as to any indemnitee, be available to the extent that such losses, claims, damages, liabilities or related expenses result from the gross negligence or willful misconduct of such indemnitee. To the fullest extent permitted by applicable law, the Collateral Agent shall be under no duty whatsoever to make or give any presentment, notice of dishonor, protest, demand for performance, notice of non-performance, notice of intent to accelerate, notice of acceleration, or other notice or demand in connection with any Collateral or the Secured Obligations, or to take any steps necessary to preserve any rights against any Grantor or other Person or ascertaining or taking action with respect to calls, conversions, exchanges, maturities, tenders or other matters relative to any Collateral, whether or not it has or is deemed to have knowledge of such matters. Each Grantor, to the extent permitted by applicable law, waives any right of marshaling in respect of any and all Collateral, and waives any right to require the Collateral Agent or any other Secured Party to proceed against any Grantor or other Person, exhaust any Collateral or enforce any other remedy which the Collateral Agent or any other Secured Party now has or may hereafter have against any Grantor or other Person.

Section 7.03 Execution of Financing Statements. Pursuant to the Texas UCC and any other applicable law, each Grantor authorizes the Collateral Agent, its counsel or its representative, at any time and from time to time, to file or record financing statements, continuation statements, amendments thereto and other filing or recording documents or instruments with respect to the Collateral without the signature of such Grantor in such form and in such offices as the Collateral Agent reasonably determines appropriate to perfect the security interests of the Collateral Agent under this Agreement. Additionally, each Grantor authorizes the Collateral Agent, its counsel or its representative, at any time and from time to time, to file or record such financing statements that describe the collateral covered thereby as “all assets of the Grantor”, “all personal property of the Grantor” or words of similar effect. A photographic or other reproduction of this Agreement shall be sufficient as a financing statement or other filing or recording document or instrument for filing or recording in any jurisdiction.

Section 7.04 Authority of Collateral Agent. Each Grantor acknowledges that the rights and responsibilities of the Collateral Agent under this Agreement with respect to any action taken by the Collateral Agent or the exercise or non-exercise by the Collateral Agent of any option, voting right, request, judgment or other right or remedy provided for herein or resulting or arising out of this Agreement shall, as between the Collateral Agent and the other Secured

Parties, be governed by the Indenture and by such other agreements with respect thereto as may exist from time to time among them, but, as between the Collateral Agent and the Grantors, the Collateral Agent shall be conclusively presumed to be acting as agent for the Secured Parties with full and valid authority so to act or refrain from acting, and no Grantor shall be under any obligation, or entitlement, to make any inquiry respecting such authority.

ARTICLE VIII

SUBORDINATION OF INDEBTEDNESS

Section 8.01 Subordination of All Guarantor Claims. As used herein, the term “Guarantor Claims” means all debts and obligations of the Company or any other Grantor to any Grantor (other than the Company), whether such debts and obligations now exist or are hereafter incurred or arise, or whether the obligation of the debtor thereon be direct, contingent, primary, secondary, several, joint and several, or otherwise, and irrespective of whether such debts or obligations be evidenced by note, contract, open account, or otherwise, and irrespective of the Person or Persons in whose favor such debts or obligations may, at their inception, have been, or may hereafter be created, or the manner in which they have been or may hereafter be acquired by. After and during the continuation of an Event of Default, no Grantor shall receive or collect, directly or indirectly, from any obligor in respect thereof any amount upon the Guarantor Claims.

Section 8.02 Claims in Bankruptcy. In the event of receivership, bankruptcy, reorganization, arrangement, debtor’s relief or other insolvency proceedings involving any Grantor, the Collateral Agent on behalf of the Secured Parties shall have the right to prove their claim in any proceeding, so as to establish their rights hereunder and receive directly from the receiver, trustee or other court custodian, dividends and payments which would otherwise be payable upon Guarantor Claims. Should any Agent or Secured Party receive, for application upon the Secured Obligations, any such dividend or payment which is otherwise payable to any Grantor, and which, as between such Grantor, shall constitute a credit upon the Guarantor Claims, then upon payment in full of the Secured Obligations then due, the intended recipient shall become subrogated to the rights of the Collateral Agent and the other Secured Parties to the extent that such payments to the Collateral Agent and the other Secured Parties on the Guarantor Claims have contributed toward the liquidation of the Secured Obligations, and such subrogation shall be with respect to that proportion of the Secured Obligations which would have been unpaid if the Collateral Agent and the other Secured Parties had not received dividends or payments upon the Guarantor Claims.

Section 8.03 Payments Held in Trust. In the event that notwithstanding Section 9.01 and Section 9.02, any Grantor should receive any funds, payments, claims or distributions which is prohibited by such Sections, then it agrees: (a) to hold in trust for the Collateral Agent and the other Secured Parties an amount equal to the amount of all funds, payments, claims or distributions so received, and (b) that it shall have absolutely no dominion over the amount of such funds, payments, claims or distributions except to pay them promptly to the Collateral Agent, for the benefit of the Secured Parties; and each Grantor covenants promptly to pay the same to the Collateral Agent.

Section 8.04 Liens Subordinate. Each Grantor agrees that, until the Secured Obligations are paid in full, any Liens securing payment of the Guarantor Claims shall be and remain inferior and subordinate to any Liens securing payment of the Secured Obligations, regardless of whether such encumbrances in favor of such Grantor, the Collateral Agent or any other Secured Party presently exist or are hereafter created or attach. Without the prior written consent of the Collateral Agent, no Grantor, during the period in which any of the Secured Obligations (other than amounts in respect of indemnification, expense reimbursement or tax gross up for which no claim has been made) are outstanding, shall (a) exercise or enforce any creditor’s right it may have against any debtor in respect of the Guarantor Claims, or (b) foreclose, repossess, sequester or otherwise take steps or institute any action or proceeding (judicial or otherwise, including without limitation the commencement of or joinder in any liquidation, bankruptcy, rearrangement, debtor’s relief or insolvency proceeding) to enforce any Lien held by it.

Section 8.05 Notation of Records. Upon the request of the Collateral Agent, all promissory notes and all accounts receivable ledgers or other evidence of the Guarantor Claims accepted by or held by any Grantor shall contain a specific written notice thereon that the indebtedness evidenced thereby is subordinated under the terms of this Agreement.

ARTICLE IX

MISCELLANEOUS

Section 9.01 Waiver. No failure on the part of the Collateral Agent or any other Secured Party to exercise and no delay in exercising, and no course of dealing with respect to, any right, remedy, power or privilege under any of the Indenture Documents shall operate as a waiver thereof, nor shall any single or partial exercise of any right, power or privilege under any of the Indenture Documents preclude any other or further exercise thereof or the exercise of any other right, remedy, power or privilege. The rights, remedies, powers and privileges provided herein are cumulative and not exclusive of any rights, remedies, powers and privileges provided by law. The exercise by the Collateral Agent of any one or more of the rights, powers and remedies herein shall not be construed as a waiver of any other rights, powers and remedies, including, without limitation, any rights of set-off.

Section 9.02 Notices. All notices and other communications provided for herein shall be given in the manner and subject to the terms of Section 14.02 of the Indenture.

Section 9.03 Amendments in Writing. None of the terms or provisions of this Agreement may be waived, amended, supplemented or otherwise modified except in accordance with Section 12.04 of the Indenture.

Section 9.04 Successors and Assigns. This Agreement shall be binding upon the successors and assigns of each Grantor and shall inure to the benefit of the Collateral Agent and the other Secured Parties and their successors and assigns; provided that except as set forth in Section 9.12 of the Indenture, no Grantor may assign, transfer or delegate any of its rights or obligations under this Agreement without the prior written consent of the Collateral Agent and the Holders.

Section 9.05 Invalidity. In the event that any one or more of the provisions contained in this Agreement or in any of the Indenture Documents to which a Grantor is a party shall, for any reason, be held invalid, illegal or unenforceable in any respect, such invalidity, illegality or unenforceability shall not affect any other provision of this Agreement or such other Indenture Document.

Section 9.06 Counterparts. This Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument and any of the parties hereto may execute this Agreement by signing any such counterpart. Delivery of an executed counterpart of a signature page of this Agreement by telecopy or other electronic means (such as a PDF) shall be effective as delivery of a manually executed counterpart of this Agreement.

Section 9.07 Survival. To the extent that any payments on the Secured Obligations or proceeds of any Collateral are subsequently invalidated, declared to be fraudulent or preferential, set aside or required to be repaid to a trustee, debtor in possession, receiver or other Person under any bankruptcy law, common law or equitable cause, then to such extent, the Secured Obligations so satisfied shall be revived and continue as if such payment or proceeds had not been received and the Collateral Agent’s and the other Secured Parties’ Liens, security interests, rights, powers and remedies under this Agreement and each Security Instrument shall continue in full force and effect. In such event, each Security Instrument shall be automatically reinstated and each Grantor shall take such action as may be reasonably requested by the Collateral Agent and the other Secured Parties to effect such reinstatement.

Section 9.08 Captions. Captions and section headings appearing herein are included solely for convenience of reference and are not intended to affect the interpretation of any provision of this Agreement.

Section 9.09 No Oral Agreements. The Indenture Documents embody the entire agreement and understanding between the parties and supersede all other agreements and understandings between such parties relating to the subject matter hereof and thereof. The Indenture Documents represent the final agreement between the parties and may not be contradicted by evidence of prior, contemporaneous or subsequent oral agreements of the parties. there are no unwritten oral agreements between the parties.

Section 9.10 Governing Law; Submission to Jurisdiction.

(A) This Agreement shall be governed by, and construed in accordance with, the laws of the state of Texas.

(b) Any legal action or proceeding with respect to this Agreement or any other Indenture Documents to which a grantor is a party shall be brought in the courts of the State of Texas or of the United States of America for the Southern District of Texas, and each of the Holders, the Collateral Agent and the Grantors hereby accepts for itself and (to the extent permitted by law) in respect of its property, generally and unconditionally, the jurisdiction of the aforesaid courts. Each of the Holders, the Collateral Agent and the Grantors hereby irrevocably waives any objection, including, without limitation, any objection to the laying of venue or based on the grounds of forum non conveniens, which it may now or

hereafter have to the bringing of any such action or proceeding in such respective jurisdictions. This submission to jurisdiction is non-exclusive and does not preclude the collateral Agent or any Holder from obtaining jurisdiction over such Grantor in any court otherwise having jurisdiction.

(c) Each of the Holders, the Collateral Agent and the Grantors irrevocably consents to the service of process of any of the aforementioned courts in any such action or proceeding by the mailing of copies thereof by registered or certified mail, postage prepaid, to such person at the address specified on Schedule 1 of this Agreement or in the Indenture, as applicable, such service to become effective thirty (30) days after such mailing. Nothing herein shall affect the right of the Collateral Agent, any Holder or Grantor to serve process in any other manner permitted by law or to commence legal proceedings or otherwise proceed against such Grantor in any other jurisdiction.

(D) Each Grantor and each Holder hereby (i) irrevocably and unconditionally waive, to the fullest extent permitted by law, trial by jury in any legal action or proceeding relating to this Agreement or any other Indenture Document and for any counterclaim therein; (ii) irrevocably waive, to the maximum extent not prohibited by law, any right it may have to claim or recover in any such litigation any special, exemplary, punitive or consequential damages, or damages other than, or in addition to, actual damages; (iii) certify that no party hereto nor any representative or agent or counsel for any party hereto has represented, expressly or otherwise, or implied that such party would not, in the event of litigation, seek to enforce the foregoing waivers, and (iv) acknowledge that it has been induced to enter into this Agreement, the Indenture Documents and the transactions contemplated hereby and thereby by, among other things, the mutual waivers and certifications contained in this section 9.12.

Section 9.11 Acknowledgments. Each Grantor hereby acknowledges that:

(a) it has been advised by counsel in the negotiation, execution and delivery of this Agreement and the other Indenture Documents to which it is a party;

(b) neither the Collateral Agent nor any other Secured Party has any fiduciary relationship with or duty to any Grantor arising out of or in connection with this Agreement or any of the other Indenture Documents, and the relationship between the Grantors, on the one hand, and the Collateral Agent and the other Secured Parties, on the other hand, in connection herewith or therewith is solely that of debtor and creditor; and

(c) no joint venture is created hereby or by the other Indenture Documents or otherwise exists by virtue of the transactions contemplated hereby among the Secured Parties or among the Grantors and the Holders.

(d) Each of the parties hereto specifically agrees that it has a duty to read this Agreement and the Security Instruments and agrees that it is charged with notice and knowledge of the terms of this Agreement and the Security Instruments; that it has in fact

read this Agreement and is fully informed and has full notice and knowledge of the terms, conditions and effects of this Agreement; that it has been represented by independent legal counsel of its choice throughout the negotiations preceding its execution of this Agreement and the Security Instruments; and has received the advice of its attorney in entering into this Agreement and the Security Instruments; and that it recognizes that certain of the terms of this Agreement and the Security Instruments result in one party assuming the liability inherent in some aspects of the transaction and relieving the other party of its responsibility for such liability. Each party hereto agrees and covenants that it will not contest the validity or enforceability of any exculpatory provision of this Agreement and the Security Instruments on the basis that the party had no notice or knowledge of such provision or that the provision is not “conspicuous.”

(e) Each Grantor warrants and agrees that each of the waivers and consents set forth in this Agreement are made voluntarily and unconditionally after consultation with outside legal counsel and with full knowledge of their significance and consequences, with the understanding that events giving rise to any defense or right waived may diminish, destroy or otherwise adversely affect rights which such Grantor otherwise may have against the Company, any other Grantor, the Secured Parties or any other Person or against any collateral. If, notwithstanding the intent of the parties that the terms of this Agreement shall control in any and all circumstances, any such waivers or consents are determined to be unenforceable under applicable law, such waivers and consents shall be effective to the maximum extent permitted by law.

Section 9.12 Additional Grantors. Each Subsidiary of the Company that is required to become a party to this Agreement pursuant to Section 8.14 of the Indenture and is not a signatory hereto shall become a Grantor for all purposes of this Agreement upon execution and delivery by such Subsidiary of an Assumption Agreement in the form of Annex I hereto.

Section 9.13 Releases.

(a) Release Upon Payment in Full. The grant of a security interest hereunder and all of rights, powers and remedies in connection herewith shall remain in full force and effect until the Collateral Agent has (i) retransferred and delivered all Collateral in its possession to the Grantors, and (ii) executed a written release or termination statement and reassigned to the Grantors without recourse or warranty any remaining Collateral and all rights conveyed hereby. Upon the complete payment of the Secured Obligations (other than amounts in respect of indemnification, expense, reimbursement or tax gross-up for which no claim has been made), the termination of the Indenture and the compliance by the Grantors with all covenants and agreements hereof, the Collateral Agent, at the written request and expense of the Company, will promptly release, reassign and transfer the Collateral to the Grantors and declare this Agreement to be terminated and of no further force or effect.

(b) Further Assurances. If any of the Collateral shall be sold, transferred or otherwise disposed of by any Grantor in a transaction permitted by the Indenture, then the Collateral Agent, at the request and sole expense of such Grantor, shall promptly execute and deliver to such Grantor all releases or other documents reasonably necessary or

desirable for the release of the Liens created hereby on such Collateral and the capital stock of such Grantor. At the request and sole expense of the Company, a Grantor shall be released from its obligations hereunder in the event that all the capital stock of such Grantor shall be sold, transferred or otherwise disposed of in a transaction permitted by the Indenture; provided that the Company shall have delivered to the Collateral Agent, at least ten Business Days prior to the date of the proposed release, a written request for release identifying the relevant Grantor and the terms of the sale or other disposition in reasonable detail, including the price thereof and any expenses in connection therewith, together with a certification by the Company stating that such transaction is in compliance with the Indenture and the other Indenture Documents.

(c) Retention in Satisfaction. Except as may be expressly applicable pursuant to Section 9.620 of the Texas UCC, no action taken or omission to act by the Collateral Agent or the other Secured Parties hereunder, including, without limitation, any exercise of voting or consensual rights or any other action taken or inaction, shall be deemed to constitute a retention of the Collateral in satisfaction of the Secured Obligations or otherwise to be in full satisfaction of the Secured Obligations, and the Secured Obligations shall remain in full force and effect, until the Collateral Agent and the other Secured Parties shall have applied payments (including, without limitation, collections from Collateral) towards the Secured Obligations in the full amount then outstanding or until such subsequent time as is provided in Section 10.14(a).

Section 9.14 Reinstatement. The obligations of each Grantor under this Agreement (including, without limitation, with respect to the guarantee contained in Article II and the provision of collateral herein) shall continue to be effective, or be reinstated, as the case may be, if at any time payment, or any part thereof, of any of the Secured Obligations is rescinded or must otherwise be restored or returned by the Collateral Agent or any other Secured Party upon the insolvency, bankruptcy, dissolution, liquidation or reorganization of any Grantor, or upon or as a result of the appointment of a receiver, intervenor or conservator of, or trustee or similar officer for, the Company or any Grantor or any substantial part of its property, or otherwise, all as though such payments had not been made.

Section 9.15 Acceptance. Each Grantor hereby expressly waives notice of acceptance of this Agreement, acceptance on the part of the Collateral Agent and the other Secured Parties being conclusively presumed by their request for this Agreement and delivery of the same to the Collateral Agent.

IN WITNESS WHEREOF, each of the undersigned has caused this Collateral Agreement to be duly executed and delivered as of the date first above written.


COMPANY:	DUNE ENERGY, INC.

	By:	/s/ ▇▇▇▇▇ ▇. ▇▇▇▇
	Name:	▇▇▇▇▇ ▇. ▇▇▇▇
	Title:	President and Chief Executive Officer


GRANTORS:	DUNE OPERATING COMPANY

	By:	/s/ ▇▇▇▇▇ ▇. ▇▇▇▇
	Name:	▇▇▇▇▇ ▇. ▇▇▇▇
	Title:	President

	DUNE PROPERTIES, INC.

	By:	/s/ ▇▇▇▇▇ ▇. ▇▇▇▇
	Name:	▇▇▇▇▇ ▇. ▇▇▇▇
	Title:	President

Signature Page

Collateral Agreement


	Acknowledged and Agreed to as of the date hereof by:

COLLATERAL AGENT:	U.S. BANK NATIONAL ASSOCIATION

	By:	/s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇
	Name:	▇▇▇▇▇ ▇. ▇▇▇▇▇
	Title:	Vice President

Signature Page

Collateral Agreement

Schedule 1

NOTICE ADDRESSES OF GRANTORS

1.	Dune Energy, Inc., a Delaware corporation

Notice Address:

Attn: ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇

Two Shell Plaza

▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇▇

▇▇▇▇▇ ▇▇▇▇

▇▇▇▇▇▇▇, ▇▇▇▇▇ ▇▇▇▇▇

Telephone: ▇▇▇-▇▇▇-▇▇▇▇

Facsimile: ▇▇▇-▇▇▇-▇▇▇▇

2.	Dune Operating Company, a Texas corporation

Notice Address:

Attn: ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇

Two Shell Plaza

▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇▇

▇▇▇▇▇ ▇▇▇▇

▇▇▇▇▇▇▇, ▇▇▇▇▇ ▇▇▇▇▇

Telephone: ▇▇▇-▇▇▇-▇▇▇▇

Facsimile: ▇▇▇-▇▇▇-▇▇▇▇

3.	Dune Properties, Inc., a Texas corporation

Notice Address:

Attn: ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇

Two Shell Plaza

▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇▇

▇▇▇▇▇ ▇▇▇▇

▇▇▇▇▇▇▇, ▇▇▇▇▇ ▇▇▇▇▇

Telephone: ▇▇▇-▇▇▇-▇▇▇▇

Facsimile: ▇▇▇-▇▇▇-▇▇▇▇

Schedule 1 - 1

Schedule 2

DESCRIPTION OF PLEDGED SECURITIES

Pledged Securities:


Owner	Issuer	Class of Stock or other Equity Interest	No. of Shares	Certificated or Uncertificated
Dune Energy, Inc.	Dune Operating Company	Common	100	Certificated

Dune Energy, Inc.	Dune Properties, Inc.	Common	4,000	Certificated

Schedule 2 - 1

Schedule 3

FILINGS AND OTHER ACTIONS

REQUIRED TO PERFECT SECURITY INTERESTS

Uniform Commercial Code Filings

Filing of UCC-1 Financing Statement for the Company with respect to the Collateral with the Secretary of State of the State of Delaware.

Filing of UCC-1 Financing Statement for Dune Operating Company with respect to the Collateral with the Secretary of State of the State of Texas.

Filing of UCC-1 Financing Statement for Dune Properties, Inc. with respect to the Collateral with the Secretary of State of the State of Texas.

Delivery to Collateral Agent of Pledged Securities

None, delivered to First-Lien Administrative Agent, pursuant to Section 2.02 hereof.

Schedule 3 - 1

Schedule 4

PRIOR NAMES AND PRIOR CHIEF EXECUTIVE OFFICES

1.	Prior to May 2007, Dune Properties Inc. was known as Goldking Operating Company, which changed its name to Dune Gulf Coast Operating, Inc., which changed its name to Dune Properties, Inc., and its address was:

▇▇▇ ▇▇▇▇▇▇, ▇▇▇▇▇ ▇▇▇▇

▇▇▇▇▇▇▇, ▇▇ ▇▇▇▇▇

2.	Prior to May 2007, address of Dune Energy, Inc. and Dune Operating Company was:

▇▇▇▇ ▇▇▇▇ ▇▇▇ ▇▇▇▇., ▇▇▇▇▇ ▇▇▇

▇▇▇▇▇▇▇, ▇▇ ▇▇▇▇▇

Schedule 4 - 1

ACKNOWLEDGMENT AND CONSENT

The undersigned hereby acknowledges receipt of a copy of the Guarantee and Collateral Agreement dated as of December [•], 2011 (the “Agreement”), made by the Grantors parties thereto for the benefit of Bank of Montreal, as Collateral Agent. The undersigned agrees for the benefit of the Collateral Agent as follows:

1. The undersigned will be bound by the terms of the Agreement and will comply with such terms insofar as such terms are applicable to the undersigned.

2. The terms of Sections 7.01(c) and 7.05 of the Agreement shall apply to it, mutatis mutandis, with respect to all actions that may be required of it pursuant to Sections 7.01(c) or 7.05 of the Agreement.


*[NAME OF ISSUER]*

By:
Title:

Address for Notices:






Fax:

Acknowledgement and Consent

*	This consent is necessary only with respect to any Issuer which is not also a Grantor. This consent may be modified or eliminated with respect to any Issuer that is not controlled by a Grantor.

Acknowledgement and Consent

Annex I

Assumption Agreement

ASSUMPTION AGREEMENT, dated as of , 201__, made by , a (the “Additional Grantor”), in favor of U.S. Bank, National Association, as Collateral Agent (in such capacity, the “Collateral Agent”) for the holders of the Floating Rate Senior Secured Notes (the “Holders”). All capitalized terms not defined herein shall have the meaning assigned to them in such Indenture.

WHEREAS, Dune Energy, Inc. (the “Company”), the Subsidiary Guarantors (as defined therein), the Collateral Agent and the other Agents, have entered into the Indenture, dated as of December [—], 2011 (as amended, supplemented or otherwise modified from time to time, the “Indenture”);

WHEREAS, in connection with the Indenture, the Company and certain of its Subsidiaries have entered into the Collateral Agreement, dated as of December [—], 2011 (as amended, supplemented or otherwise modified from time to time, the “Guarantee and Collateral Agreement”) in favor of the Collateral Agent for the benefit of the Holders;

WHEREAS, the Indenture requires the Additional Grantor to become a party to the Collateral Agreement; and

WHEREAS, the Additional Grantor has agreed to execute and deliver this Assumption Agreement in order to become a party to the Collateral Agreement;

NOW, THEREFORE, IT IS AGREED:

1. Guarantee and Collateral Agreement. By executing and delivering this Assumption Agreement, the Additional Grantor, as provided in Section 10.12 of the Collateral Agreement, hereby becomes a party to the Collateral Agreement as a Grantor thereunder with the same force and effect as if originally named therein as a Grantor and, without limiting the generality of the foregoing, hereby expressly assumes all obligations and liabilities of a Grantor thereunder and expressly grants to the Collateral Agent, for the benefit of the Secured Parties (as defined in the Collateral Agreement), a security interest in all Collateral owned by such Additional Grantor to secure all of such Additional Grantor’s obligations and liabilities thereunder. The information set forth in Annex 1-A hereto is hereby added to the information set forth in Schedules 1 through 5 to the Collateral Agreement. The Additional Grantor hereby represents and warrants that each of the representations and warranties contained in Article V of the Collateral Agreement is true and correct on and as the date hereof (after giving effect to this Assumption Agreement) as if made on and as of such date.

2. Governing Law. THIS ASSUMPTION AGREEMENT SHALL BE GOVERNED BY, AND CONSTRUED AND INTERPRETED IN ACCORDANCE WITH, THE LAW OF THE STATE OF TEXAS.

IN WITNESS WHEREOF, the undersigned has caused this Assumption Agreement to be duly executed and delivered as of the date first above written.

Annex I - 1


*[ADDITIONAL GRANTOR]*

By:
Name:
Title:

Annex I - 2

COLLATERAL AGREEMENT made by each of the Grantors (as defined herein) in favor of U.S. Bank National Association, as Collateral Agent Dated as of December 22, 2011

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