TRIANGLE PETROLEUM CORPORATION 15,000,000 Shares of Common Stock UNDERWRITING AGREEMENT

Exhibit 1.1

Execution Version

TRIANGLE PETROLEUM CORPORATION

15,000,000 Shares of Common Stock

UNDERWRITING AGREEMENT

Dated: August 8, 2013

TABLE OF CONTENTS

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TRIANGLE PETROLEUM CORPORATION

15,000,000 Shares of Common Stock

UNDERWRITING AGREEMENT

August 8, 2013

Wells Fargo Securities, LLC
As Representative of the several Underwriters
c/o Wells Fargo Securities, LLC
375 Park Avenue
New York, New York 10152

Ladies and Gentlemen:

Triangle Petroleum Corporation, a Delaware corporation (the “Company”), confirms its agreement with Wells Fargo Securities, LLC (“Wells Fargo”) and each of the other Underwriters named in Exhibit A hereto (collectively, the “Underwriters,” which term shall also include any underwriter substituted as hereinafter provided in Section 10 hereof), for whom Wells Fargo is acting as representative (in such capacity, the “Representative”), with respect to the issue and sale by the Company of a total of 15,000,000 shares (the “Initial Securities”) of the Company’s common stock, par value $0.00001 per share (“Common Stock”), and the purchase by the Underwriters, acting severally and not jointly, of the respective numbers of Initial Securities set forth in said Exhibit A hereto, and with respect to the grant by the Company to the Underwriters, acting severally and not jointly, of the option described in Section 2(b) hereof to purchase all or any part of 2,250,000 additional shares of Common Stock to cover over-allotments, if any.  The Initial Securities to be purchased by the Underwriters and all or any part of the 2,250,000 shares of Common Stock subject to the option described in Section 2(b) hereof (the “Option Securities”) are hereinafter called, collectively, the “Securities.”  Certain terms used in this Underwriting Agreement (this “Agreement”) are defined in Section 15 hereof.

The Company understands that the Underwriters propose to make a public offering of the Securities as soon as the Representative deems advisable after this Agreement has been executed and delivered.

The Company has prepared and previously delivered to you a preliminary prospectus supplement dated August 6, 2013 relating to the Securities and a related prospectus dated December 19, 2012 (the “Base Prospectus”).  Such preliminary prospectus supplement and Base Prospectus, including the documents incorporated or deemed to be incorporated by reference therein pursuant to Item 12 of Form S-3 under the 1933 Act, are hereinafter called, collectively, the “Pre-Pricing Prospectus.”  Promptly after the execution and delivery of this Agreement, the Company will prepare and file with the Commission a prospectus supplement dated August 8, 2013 (the “Prospectus Supplement”) and will file the Prospectus Supplement and the Base Prospectus with the Commission, all in accordance with the provisions of Rule 430B and Rule 424(b), and the Company has previously advised you of all information

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(financial and other) that will be set forth therein.  The Prospectus Supplement and the Base Prospectus, in the form first furnished to the Underwriters for use in connection with the offering of the Securities (whether to meet the request of purchasers pursuant to Rule 173(d) or otherwise), including the documents incorporated or deemed to be incorporated by reference therein pursuant to Item 12 of Form S-3 under the 1933 Act, are herein called, collectively, the “Prospectus.”

On August 5, 2013, Triangle USA Petroleum Corporation, a Colorado corporation and a wholly owned subsidiary of the Company (“TUSA”), entered into a definitive purchase and sale agreement and a definitive trade agreement (collectively, the “Definitive Agreements”) with Kodiak Oil & Gas (USA) Inc., a Colorado corporation, and Kodiak Williston, LLC, a Delaware limited liability company (collectively, “Kodiak”), to acquire approximately 6,200 net acres of producing oil and gas properties (the “Acquired Properties”) in North Dakota’s McKenzie County in exchange for approximately $82.0 million in cash, subject to certain adjustments, and oil and gas leases totaling approximately 582 net acres in Kodiak-operated units (the “Acquisition”).

SECTION 1.  Representations and Warranties.

(a)                                 Representations and Warranties by the Company.  The Company represents and warrants to each Underwriter as of the date hereof, as of the Applicable Time, as of the Closing Date referred to in Section 2(c) hereof, and as of each Option Closing Date (if any) referred to in Section 2(b) hereof, and agrees with each Underwriter, as follows:

(1)                                 Compliance with Registration Requirements.  The Company meets the requirements for use of Form S-3 under the 1933 Act and the Securities have been duly registered under the 1933 Act pursuant to the Registration Statement.  Each of the Initial Registration Statement and any post-effective amendments thereto have been declared effective under the 1933 Act and any Rule 462(b) Registration Statement has become effective under the 1933 Act or, not later than 8:00 a.m. (New York City time) on  the business day immediately after the date of this Agreement, will become effective under the 1933 Act, and no stop order suspending the effectiveness of the Initial Registration Statement or any Rule 462(b) Registration Statement has been issued under the 1933 Act and no proceedings for that purpose have been instituted or are pending or, to the knowledge of the Company, are contemplated by the Commission, and any request on the part of the Commission for additional information has been complied with.  The Initial Registration Statement was initially filed with the Commission on October 19, 2012.

(2)                                 Registration Statement, Prospectus and Disclosure at Time of Sale.  At the respective times that the Initial Registration Statement, any Rule 462(b) Registration Statement and any amendments thereto became effective, at each time subsequent to the filing of the Initial Registration Statement that the Company filed an Annual Report on Form 10-K (or any amendment thereto) with the Commission, at each deemed effective date with respect to the Underwriters pursuant to Rule 430B(f)(2), and at the Closing Date (and, if any Option Securities are purchased, at the applicable Option Closing Date), the Initial Registration Statement, any Rule 462(b) Registration Statement and any amendments to any of the foregoing complied and will comply in all material respects

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with the requirements of the 1933 Act and the 1933 Act Regulations and did not and will not contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading.

At the respective times the Prospectus or any amendment or supplement thereto was filed pursuant to Rule 424(b) or issued, at the Closing Date (and, if any Option Securities are purchased, at the applicable Option Closing Date), and at any time when a prospectus is required (or, but for the provisions of Rule 172, would be required) by applicable law to be delivered in connection with sales of Securities (whether to meet the requests of purchasers pursuant to Rule 173(d) or otherwise), neither the Prospectus nor any amendments or supplements thereto included or will include an untrue statement of a material fact or omitted or will omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading.

As of the Applicable Time (except in the case of clause (z) below) and as of each time prior to the Closing Date that an investor agrees (orally or in writing) to purchase or, if applicable, reconfirms (orally or in writing) an agreement to purchase any Securities from the Underwriters, neither (x) any Issuer General Use Free Writing Prospectuses, if any, issued at or prior to the Applicable Time, the Pre-Pricing Prospectus as of the Applicable Time and the information, if any, included on Exhibit H hereto, all considered together (collectively, the “General Disclosure Package”), nor (y) any individual Issuer Limited Use Free Writing Prospectus, when considered together with the General Disclosure Package, nor (z) any Issuer General Use Free Writing Prospectuses issued subsequent to the Applicable Time, when considered together with the General Disclosure Package, included or will include an untrue statement of a material fact or omitted or will omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading.

Each preliminary prospectus and the Prospectus and any amendments or supplements to any of the foregoing filed as part of the Registration Statement or any amendment thereto, or filed pursuant to Rule 424, or delivered to the Underwriters for use in connection with the offering of the Securities, complied when so filed or when so delivered, as the case may be, in all material respects with the 1933 Act and the 1933 Act Regulations.

The representations and warranties in the preceding paragraphs of this Section 1(a)(2) do not apply to statements in or omissions from the Registration Statement, any preliminary prospectus, the Prospectus or any Issuer Free Writing Prospectus or any amendment or supplement to any the foregoing made in reliance upon and in conformity with written information furnished to the Company by any Underwriter through the Representative expressly for use therein, it being understood and agreed that the only such information furnished by the Underwriters as aforesaid consists of the information described as such in Section 6(b) hereof.

At the respective times that the Initial Registration Statement, any Rule 462(b) Registration Statement or any amendment to any of the foregoing were filed and as of the

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earliest time after the filing of the Initial Registration Statement that the Company or any other offering participant made a bona fide offer of the Securities within the meaning of Rule 164(h)(2), and at the date hereof, the Company was not and is not an “ineligible issuer” as defined in Rule 405, in each case without taking into account any determination made by the Commission pursuant to paragraph (2) of the definition of such term in Rule 405; and without limitation to the foregoing, the Company has at all relevant times met, meets and will at all relevant times meet the requirements of Rule 164 for the use of a free writing prospectus (as defined in Rule 405) in connection with the offering contemplated hereby.

The copies of the Initial Registration Statement and any Rule 462(b) Registration Statement and any amendments to any of the foregoing and the copies of each preliminary prospectus, each Issuer Free Writing Prospectus that is required to be filed with the Commission pursuant to Rule 433 and the Prospectus and any amendments or supplements to any of the foregoing, that have been or subsequently are delivered to the Underwriters in connection with the offering of the Securities (whether to meet the request of purchasers pursuant to Rule 173(d) or otherwise) were and will be identical to the electronically transmitted copies thereof filed with the Commission pursuant to EDGAR, except to the extent permitted by Regulation S-T.  For purposes of this Agreement, references to the “delivery” or “furnishing” of any of the foregoing documents to the Underwriters, and any similar terms, include, without limitation, electronic delivery.

The Company has made available a “bona fide electronic road show” (as defined in Rule 433(h)(5)) in compliance with Rule 433(d)(8)(ii) such that no filing with the Commission of any “road show” (as defined in Rule 433(h)(4)) is required in connection with the offering of the Securities.

Each Issuer Free Writing Prospectus (if any), as of its issue date and at all subsequent times through the completion of the public offering and sale of the Securities did not, does not and will not include any information that conflicted, conflicts or will conflict with the information contained in the Registration Statement, any preliminary prospectus or the Prospectus that has not been superseded or modified.

(3)                                 Incorporated Documents.  The documents incorporated or deemed to be incorporated by reference in the Registration Statement, any preliminary prospectus and the Prospectus, at the respective times they were or hereafter are filed with the Commission, complied and will comply in all material respects with the requirements of the 1934 Act and the 1934 Act Regulations, as applicable, and did not, and when read together with the other information in any preliminary prospectus and the Prospectus, at the Closing Date and, if applicable, at each Option Closing Date, will not, contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading.

(4)                                 Independent Accountants.  The accountants who certified the financial statements of the Company and any supporting schedules included or incorporated by

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reference in the Registration Statement, the General Disclosure Package and the Prospectus are independent public accountants with respect to the Company and its subsidiaries as required by the 1933 Act, the 1933 Act Regulations, the 1934 Act, the 1934 Act Regulations, as applicable, and the PCAOB.  To the best knowledge of the Company, the accountants who certified the statements of operating revenues and direct operating expenses relating to the Acquired Properties included or incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus and who have delivered the initial letter referred to in Section 5(e)(ii) hereof, are and have been, (i) independent public accountants with respect to Kodiak as required by the 1933 Act, the 1933 Act Regulations, the 1934 Act, the 1934 Act Regulations, as applicable, and the PCAOB and (ii) independent public accountants with respect to the Company as required by the rules and regulations of the American Institute of Certified Public Accountants, in each case, during the periods covered by the financial statements on which it reported included or incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus.

(5)                                 Financial Statements.  The financial statements of the Company and the statement of operating revenues and direct operating expenses relating to the Acquired Properties included or incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus, together with the related schedules (if any) and notes, present fairly in all material respects (i) the financial position of the Company and its consolidated subsidiaries at the dates indicated, (ii) the results of operations, changes in stockholders’ equity and cash flows of the Company and its consolidated subsidiaries for the periods specified and (iii) the operating revenues and direct operating expenses related to the Acquired Properties for the periods specified.  All such financial statements have been prepared in conformity with GAAP applied on a consistent basis throughout the periods involved and comply with all applicable accounting requirements under the 1933 Act and the 1933 Act Regulations, or the 1934 Act and the 1934 Act Regulations, as applicable.  The supporting schedules, if any, included or incorporated by reference in the Registration Statement present fairly in all material respects and in accordance with GAAP, the information required to be stated therein.  The information in the Pre-Pricing Prospectus and the Prospectus under the captions “Prospectus Supplement Summary—Summary Historical Consolidated Financial Data of Triangle” and “Selected Historical Statement of Operating Revenues and Direct Operating Expenses Relating to the Primary Properties” presents fairly the information shown therein and has been compiled on a basis consistent with that of the audited financial statements of the Company included in the Registration Statement, the General Disclosure Package and the Prospectus.  The pro forma financial statements and the related notes thereto included in the Registration Statement, the General Disclosure Package and the Prospectus present fairly in all material respects the information shown therein, have been prepared in accordance with the Commission’s rules and guidelines with respect to pro forma financial statements, have been properly compiled on the bases described therein, and the assumptions used in the preparation thereof are reasonable and the adjustments used therein are appropriate to give effect to the transactions and circumstances referred to therein; and the information appearing in the Pre-Pricing Prospectus and the Prospectus under the caption “Summary Unaudited Condensed Consolidated Pro Forma Financial Data” presents fairly in all material respects the

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information shown therein and has been compiled on a basis consistent with that of the pro forma financial statements included or incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus.  All “non-GAAP financial measures” (as such term is defined in the rules and regulations of the Commission), if any, contained in the Registration Statement, the General Disclosure Package and the Prospectus comply with Item 10 of Regulation S-K of the Commission, to the extent applicable.

(6)                                 No Material Adverse Change in Business.  Since the respective dates as of which information is given in the Registration Statement, the General Disclosure Package and the Prospectus (in each case, exclusive of any amendments or supplements thereto subsequent to the date of this Agreement), (A) there has been no material adverse change or any development that could reasonably be expected to result in a material adverse change, in the condition (financial or other), results of operations, business, properties, management or prospects of the Company and its subsidiaries taken as a whole, whether or not arising in the ordinary course of business (in any such case, a “Material Adverse Effect”); (B) except as otherwise disclosed in the General Disclosure Package and the Prospectus (in each case, exclusive of any amendments or supplements thereto subsequent to the date of this Agreement), neither the Company nor any of its subsidiaries has incurred any liability or obligation or entered into any transaction or agreement that, individually or in the aggregate, is material with respect to the Company and its subsidiaries taken as a whole, and neither the Company nor any of its subsidiaries has sustained any loss or interference with its business or operations from fire, explosion, flood, earthquake or other natural disaster or calamity, whether or not covered by insurance, or from any labor dispute or disturbance or court or governmental action, order or decree which could reasonably be expected, individually or in the aggregate, to result in a Material Adverse Effect; and (C) there has been no dividend or distribution of any kind declared, paid or made by the Company on any class of its capital stock.

(7)                                 Good Standing of the Company.  The Company has been duly incorporated and is validly existing as a corporation in good standing under the laws of the State of Delaware and has power and authority to own, lease and operate its properties and to conduct its business as described in the Registration Statement, the General Disclosure Package and the Prospectus and to enter into and perform its obligations under this Agreement; and the Company is duly qualified as a foreign corporation to transact business and is in good standing in the State of Colorado and in each other jurisdiction in which such qualification is required, whether by reason of the ownership or leasing of property or the conduct of business, except where the failure so to qualify or to be in good standing would not, individually or in the aggregate, result in a Material Adverse Effect.

(8)                                 Good Standing of Subsidiaries.  Each subsidiary of the Company has been duly organized and is validly existing as a corporation, limited or general partnership or limited liability company, as the case may be, in good standing under the laws of the jurisdiction of its organization, has power and authority to own, lease and operate its properties and to conduct its business as described in the Registration Statement, the General Disclosure Package or the Prospectus and is duly qualified as a foreign

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corporation, limited or general partnership or limited liability company, as the case may be, to transact business and is in good standing in each jurisdiction in which such qualification is required, whether by reason of the ownership or leasing of property or the conduct of business, except where the failure so to qualify or to be in good standing would not, individually or in the aggregate, result in a Material Adverse Effect; except as otherwise disclosed in the Registration Statement, the General Disclosure Package and the Prospectus, all of the issued and outstanding shares of capital stock of each such subsidiary that is a corporation, all of the issued and outstanding partnership interests of each such subsidiary that is a limited or general partnership and all of the issued and outstanding limited liability company interests, membership interests or other similar interests of each such subsidiary that is a limited liability company have been duly authorized and validly issued, are fully paid and (except in the case of general partnership interests) non-assessable and are owned by the Company, directly or through subsidiaries, free and clear of any Lien; and none of the issued and outstanding shares of capital stock of any such subsidiary that is a corporation, none of the issued and outstanding partnership interests of any such subsidiary that is a limited or general partnership, and none of the issued and outstanding limited liability company interests, membership interests or other similar interests of any such subsidiary that is a limited liability company was issued in violation of any preemptive rights, rights of first refusal or other similar rights of any securityholder of such subsidiary or any other person.  The only subsidiaries of the Company are the subsidiaries listed on Exhibit B hereto and Exhibit B accurately sets forth whether each such subsidiary is a corporation, limited or general partnership or limited liability company and the jurisdiction of organization of each such subsidiary and, in the case of any subsidiary which is a partnership or limited liability company, its general partners and managing members, respectively.  Any subsidiaries of the Company which are “significant subsidiaries” as defined by Rule 1-02 of Regulation S-X are listed on Exhibit B hereto under the caption “Material Subsidiaries.”

(9)                                 Capitalization.  The authorized, issued and outstanding capital stock of the Company as of the date of this Agreement is as set forth in the column entitled “Actual” and in the corresponding line items under the caption “Capitalization” in the Pre-Pricing Prospectus and the Prospectus.  At the time of the purchase of the Initial Securities by the Underwriters on the Closing Date and as of each Option Closing Date (if any), the authorized, issued and outstanding capital stock of the Company will be as set forth in the column entitled “As Adjusted” and in the corresponding line items under such caption (in each case, except for any Option Securities issued by the Company pursuant to this Agreement and issuances, if any, subsequent to the date of this Agreement pursuant to employee or director stock option, stock purchase or other equity incentive plans or any dividend reinvestment plan described in the Pre-Pricing Prospectus and the Prospectus, upon the exercise of options issued pursuant to any such stock option, stock purchase or other equity incentive plans as so described, or upon the exercise of options or the conversion of convertible securities described in the General Disclosure Package and the Prospectus).  The shares of issued and outstanding capital stock of the Company have been duly authorized and validly issued and are fully paid and non-assessable and were issued in compliance with all applicable foreign, state and federal securities and “blue-sky” laws; and none of the outstanding shares of capital stock of the Company was issued

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in violation of any preemptive rights, rights of first refusal or other similar rights of any securityholder of the Company or any other person.

(10)                          No Preemptive Rights, Registration Rights or Options.  Except as identified in the Registration Statement, the General Disclosure Package or the Prospectus, there are no (i) preemptive rights, rights of first refusal or other rights to subscribe for or to purchase, nor any restriction upon the voting or transfer of, any equity securities of the Company or any of its subsidiaries or (ii) outstanding options or warrants to purchase any securities of the Company or any of its subsidiaries.  Except for such rights that have been waived or as described in the Registration Statement, the General Disclosure Package or the Prospectus, neither the filing of the Registration Statement nor the offering or sale of the Securities as contemplated by this Agreement gives rise to any rights for or relating to the registration of any capital stock or other securities of the Company.

(11)                          Authorization of Agreement.  This Agreement has been duly authorized, executed and delivered by the Company.

(12)                          Authorization of Securities.  The Securities to be sold by the Company under this Agreement have been duly authorized for issuance and sale to the Underwriters pursuant to this Agreement and, when issued and delivered by the Company pursuant to this Agreement against payment of the consideration set forth herein, will be validly issued, fully paid and non-assessable; no holder of the Securities is or will be subject to personal liability by reason of being such a holder; and the issuance and sale of the Securities to be sold by the Company under this Agreement are not subject to any preemptive rights, rights of first refusal or other similar rights of any securityholder of the Company or any other person, except for such rights as have been waived.

(13)                          Authorization of Definitive Agreements.  Each of the Definitive Agreements has been duly authorized, executed and delivered by TUSA and, assuming the due authorization, execution and delivery by each other party thereto, is a valid and legally binding agreement of each of the parties thereto enforceable against each of such parties in accordance with its terms, except that the enforceability of obligations thereunder may be limited by bankruptcy, fraudulent conveyance, insolvency, reorganization, moratorium, and other similar laws relating to or affecting creditors’ rights generally and by general equitable principles (regardless of whether such enforceability is considered in a proceeding in equity or at law).

(14)                          Description of Securities.  The Common Stock, all outstanding warrants and convertible securities, and the Company’s charter and bylaws conform in all material respects to the respective statements relating thereto contained in the Registration Statement, the General Disclosure Package and the Prospectus and such statements conform to the rights set forth in the respective instruments and agreements defining the same.

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(15)                          Absence of Defaults and Conflicts.  Neither the Company nor any of its subsidiaries is in violation of its Organizational Documents or in default in the performance or observance of any obligation, agreement, covenant or condition contained in any Company Document, except for such defaults that would not, individually or in the aggregate, result in a Material Adverse Effect.  The execution, delivery and performance of this Agreement and the consummation of the transactions contemplated herein, in the Definitive Agreements and in the Registration Statement, the General Disclosure Package and the Prospectus (including the issuance and sale of the Securities and the use of the proceeds from the sale of the Securities as described in the Pre-Pricing Prospectus and the Prospectus under the caption “Use of Proceeds”) and compliance by the Company with its obligations under this Agreement or the Definitive Agreements do not and will not, whether with or without the giving of notice or passage of time or both, conflict with or constitute a breach of, or default, Termination Event or Repayment Event under, or result in the creation or imposition of any Lien upon any property or assets of the Company or any of its subsidiaries pursuant to, any Company Documents, except for such conflicts, breaches, defaults or Liens that would not, individually or in the aggregate, result in a Material Adverse Effect or as would not materially adversely affect the consummation of the transactions contemplated hereby or by the Definitive Agreements, nor will such action result in any violation of (i) the provisions of the Organizational Documents of the Company or any of its subsidiaries or (ii) any applicable law, statute, rule, regulation, judgment, order, writ or decree of any government, government instrumentality or court, domestic or foreign, having jurisdiction over the Company or any of its subsidiaries or any of their respective assets, properties or operations, except where such violation of any applicable law, statute, rule, regulation, judgment, order, writ or decree of any government, governmental instrumentality or court, domestic or foreign, would not result in a Material Adverse Effect or as would not materially adversely affect the consummation of the transactions contemplated hereby or by the Definitive Agreements.  The consummation of the Acquisition will not result in, or be subject to, any right granted by the Company to any party to purchase or otherwise acquire any of the properties and assets being purchased and sold pursuant to the Definitive Agreements, whether pursuant to preferential purchase rights, rights of first refusal or any other legal right or entitlement under any contract, instrument, applicable law or other legal principle, and none of such properties and assets shall be subject to any such right that would be exercisable after the consummation of the Acquisition and prior to any subsequent sale or transfer of such properties or assets, except in the case of each of the foregoing for any such right that (x) shall have been duly waived or otherwise surrendered or relinquished upon or prior to consummation of the Acquisition, pursuant to a valid, legally binding and enforceable agreement or other legal instrument or (y) if exercised, would not reasonably be expected to have a Material Adverse Effect or as would not materially adversely affect the consummation of the transactions contemplated hereby or by the Definitive Agreements.

(16)                          Absence of Labor Dispute.  No labor dispute with the employees of the Company or any of its subsidiaries exists or, to the knowledge of the Company, is imminent, and the Company is not aware of any existing or imminent labor disturbance by the employees of any of its subsidiaries, principal operators, contractors, suppliers or customers which, in any such case, would or might reasonably be expected, individually or in the aggregate, to result in a Material Adverse Effect.  The Company is not aware

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that any key employee or significant group of employees of the Company or any of its subsidiaries plans to terminate employment with the Company or such subsidiary.

(17)                          Absence of Proceedings.  Except as disclosed in the Registration Statement, the General Disclosure Package, the Pre-Pricing Prospectus or the Prospectus, there are no actions, suits, proceedings, inquiries or investigations before or brought by any court or governmental agency or body, domestic or foreign, now pending, or, to the knowledge of the Company, threatened, against or affecting the Company or any of its subsidiaries, which is required to be disclosed, or which would reasonably be expected to, individually or in the aggregate, result in a Material Adverse Effect or to materially and adversely affect the properties or assets of the Company and its subsidiaries, taken as a whole, or the consummation of the transactions contemplated in this Agreement or the performance by the Company of its obligations hereunder.

(18)                          Accuracy of Descriptions and Exhibits.  Statements made in the Registration Statement, the General Disclosure Package, the Pre-Pricing Prospectus and the Prospectus insofar as they purport to constitute matters of law, summaries of legal or governmental matters or proceedings, summaries of provisions of the Company’s Organizational Documents or any other instruments or agreements or legal conclusions, including, but not limited, to under the captions “Description of Capital Stock,” “United States Federal Income Tax Consequences to Non-U.S. Holders,” “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Liquidity and Capital Resources,” “Business—Operations and Oil and Natural Gas Properties—Governmental Regulation,” “Executive Compensation—Compensation Discussion and Analysis,” is correct in all material respects; all descriptions in the Registration Statement, the General Disclosure Package and the Prospectus of any other Company Documents are fairly summarized in all material respects.

(19)                          Possession of Intellectual Property.  The Company and its subsidiaries own or possess, or can acquire on reasonable terms, adequate patents, patent rights, licenses, inventions, copyrights, know how (including trade secrets and other unpatented and/or unpatentable proprietary or confidential information, systems or procedures), trademarks, service marks, trade names or other intellectual property (collectively, “Intellectual Property”) necessary to carry on the business now operated by them, except where the failure to own or possess, or have the ability to acquire on reasonable terms such Intellectual Property would not, individually or in the aggregate, result in a Material Adverse Effect.  Neither the Company nor any of its subsidiaries has received any notice, and is not otherwise aware, of any infringement of or conflict with asserted rights of others with respect to any Intellectual Property or of any facts or circumstances which would render any Intellectual Property invalid or inadequate to protect the interest of the Company or any of its subsidiaries therein, and which infringement or conflict (if the subject of any unfavorable decision, ruling or finding) or invalidity or inadequacy, individually or in the aggregate, would result in a Material Adverse Effect.

(20)                          Absence of Further Requirements.  (A) No filing with, or authorization, approval, consent, license, order, registration, qualification or decree of, any court or governmental authority or agency, domestic or foreign, (B) no authorization, approval,

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vote or consent of any holder of capital stock or other securities of the Company or creditor of the Company or any of its subsidiaries, (C) no authorization, approval, waiver or consent under any Company Document, and (D) no authorization, approval, vote or consent of any other person or entity, is necessary or required for the authorization, execution, delivery or performance by the Company of this Agreement or either of the Definitive Agreements, or for the offering of the Securities as contemplated by this Agreement, for the issuance, sale or delivery of the Securities to be sold by the Company pursuant to this Agreement, or for the consummation of any of the other transactions contemplated by this Agreement, in each case, on the terms contemplated by the Registration Statement, the General Disclosure Package and the Prospectus, except such as have been, or prior to the Closing Date or an Option Closing Date, as applicable, will be, obtained under the 1933 Act, the 1933 Act Regulations, the 1934 Act and the 1934 Act Regulations or from the NYSE MKT LLC or FINRA and except that no representation is made as to such as may be required under state or foreign securities laws.

(21)                          Possession of Licenses and Permits.  The Company and its subsidiaries possess such permits, licenses, approvals, consents and other authorizations (collectively, “Governmental Licenses”) issued by the appropriate federal, state, local or foreign regulatory agencies or bodies necessary to conduct the business now operated by them, except where the failure to have obtained the same would not, individually or in the aggregate, result in a Material Adverse Effect.  The Company and its subsidiaries are in compliance with the terms and conditions of all such Governmental Licenses, except where the failure to so comply would not, individually or in the aggregate, result in a Material Adverse Effect.  All such Governmental Licenses are valid and in full force and effect, except where the invalidity or the failure to be in full force and effect would not, individually or in the aggregate, result in a Material Adverse Effect.  Neither the Company nor any of its subsidiaries has received any notice of proceedings relating to the revocation or modification of any such Governmental Licenses which, if the subject of an unfavorable decision, ruling or finding, would, individually or in the aggregate, result in a Material Adverse Effect.

(22)                          Title to Property.  Except as otherwise set forth in the Registration Statement, the General Disclosure Package or the Prospectus or such as in the aggregate does not now cause nor will in the future result in a Material Adverse Effect, the Company and each of its subsidiaries has title to its respective properties as follows: (i) with respect to wells (including leasehold interests and appurtenant personal property) and non-producing oil and natural gas properties (including undeveloped locations on leases held by production and those leases not held by production), such title is good and free and clear of all liens, security interests, pledges, charges, encumbrances, mortgages and restrictions, (ii) with respect to non-producing properties in exploration prospects, such title was investigated in accordance with customary industry procedures prior to the  acquisition thereof by the Company or any of its subsidiaries; (iii) with respect to real property other than oil and gas interests, such title is good and marketable free and clear of all liens, security interests, pledges, charges, encumbrances, mortgages and restrictions; and (iv) with respect to personal property other than that appurtenant to oil and gas interests, such title is free and clear of all liens, security interests, pledges,

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charges, encumbrances, mortgages and restrictions. No real property owned, leased, licensed, or used by the Company or any of its subsidiaries lies in an area which is, or to the knowledge of the Company will be, subject to restrictions which would prohibit, and no statements of facts relating to the action or inaction of another person or entity or his or its ownership, leasing, licensing, or use of any real or personal property exists or will exist which would prevent, the continued effective ownership, leasing, licensing, exploration, development or production or use of such real property in the business of the Company or any of its subsidiaries as presently conducted or as the Registration Statement, the General Disclosure Package, the Pre-Pricing Prospectus or the Prospectus indicates they contemplate conducting, except as may be properly described in the Registration Statement, the General Disclosure Package, the Pre-Pricing Prospectus, the Prospectus or the Prospectus or such as in the aggregate do not now cause and will not in the future result in a Material Adverse Effect.

(23)                          Investment Company Act.  The Company is not, and upon the issuance and sale of the Securities as herein contemplated and the receipt and application of the net proceeds therefrom as described in the General Disclosure Package and the Prospectus under the caption “Use Of Proceeds,” will not be, an “investment company” or an entity “controlled” by an “investment company” as such terms are defined in the 1940 Act.

(24)                          Reserve Engineers.  Cawley, Gillespie & Associates, Inc. (“CGA”), who issued a report with respect to TUSA’s oil and natural gas reserves at January 31, 2013 and who will deliver the letters referred to in Sections 5(g) and 5(h) hereof and may deliver the letter referred to in Section 5(k)(5), was, as of the date of such report, and is, as of the date hereof, an independent petroleum engineer with respect to TUSA.  Ryder Scott Company, L.P., who issued a report with respect to the Company’s oil and natural gas reserves at January 31, 2012 and who will deliver the letters referred to in Sections 5(g) and 5(h) hereof and may deliver the letter referred to in Section 5(k)(5), was, as of the date of such report, and is, as of the date hereof, an independent petroleum engineer with respect to the Company.

(25)                          Reserve Data.  (A) The factual information underlying the proved oil and natural gas reserve estimates and present values of the Company, which was supplied by the Company to CGA for the purposes of auditing the Company’s internally prepared reserve report and preparing the letter (the “Reserve Report Letter”) of CGA, including, without limitation, production volumes, costs of operation and development, current prices for production, agreements relating to current and future operations and sales of production, was true and correct in all material respects on the dates such estimates were made and such information was supplied and was prepared in accordance, in all material respects, with Commission guidelines applied on a consistent basis throughout the periods involved; other than production of the reserves in the ordinary course of business and intervening market commodity price fluctuations, neither the Company nor any of its subsidiaries is aware of any facts or circumstances that would result in a material adverse change in the reserves, or the present value of future net cash flows therefrom, as described in the Registration Statement, the General Disclosure Package, the Pre-Pricing Prospectus and the Prospectus and as reflected in the Reserve Report Letter; estimates of

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such reserves and present values as described in the Registration Statement, the General Disclosure Package, the Pre-Pricing Prospectus and the Prospectus and reflected in the Reserve Report Letter comply in all material respects with the applicable requirements of Regulation S-X and Subpart 1200 of Regulation S-K under the 1933 Act. (B) The proved oil and natural gas reserve estimates for the Acquired Properties as of July 1, 2013 included or incorporated by reference in the Registration Statement, the General Disclosure Package, the Pre-Pricing Prospectus and the Prospectus were calculated by the Company’s internal reserve engineers, and such estimates fairly reflect, in all material respects, the oil and natural gas reserves attributable to the Acquired Properties at the dates indicated therein and are in accordance, in all material respects, with Commission guidelines applied on a consistent basis throughout the periods involved, and such reserve estimates and calculations were reviewed by CGA as evidenced in a reserves audit letter dated August 2, 2013.

(26)                          Environmental Laws.  Except as described in the Registration Statement, the General Disclosure Package and the Prospectus and except as would not, individually or in the aggregate, result in a Material Adverse Effect, (A) neither the Company nor any of its subsidiaries is in violation of any federal, state, local or foreign statute, law, rule, regulation, ordinance, code, policy or rule of common law or any judicial or administrative interpretation thereof, including any judicial or administrative order, consent, decree or judgment, relating to pollution or protection of human health as it relates to exposure to hazardous substances, the environment (including, without limitation, ambient air, surface water, groundwater, land surface or subsurface strata) or wildlife, including, without limitation, laws and regulations relating to the release or threatened release of chemicals, pollutants, contaminants, wastes, toxic substances, hazardous substances, petroleum or petroleum products (collectively, “Hazardous Materials”) or to the manufacture, processing, distribution, use, treatment, storage, disposal, transport or handling of Hazardous Materials (collectively, “Environmental Laws”), (B) the Company and its subsidiaries have all permits, authorizations and approvals required under any applicable Environmental Laws and are each in compliance with their requirements, (C) there are no pending or threatened administrative, regulatory or judicial actions, suits, demands, demand letters, claims, Liens, notices of noncompliance or violation, investigation or proceedings relating to any Environmental Law against the Company or any of its subsidiaries and (D) there are no events or circumstances that might reasonably be expected to form the basis of an order for clean-up or remediation, or an action, suit or proceeding by any private party or governmental body or agency, against or affecting the Company or any of its subsidiaries relating to Hazardous Materials or any Environmental Laws.

(27)                          Absence of Registration Rights.  There are no persons with registration rights or other similar rights to have any securities (debt or equity) (A) registered pursuant to the Registration Statement or included in the offering contemplated by this Agreement or (B) otherwise registered by the Company under the 1933 Act, and there are no persons with co-sale rights, tag-along rights or other similar rights to have any securities (debt or equity) included in the offering contemplated by this Agreement or sold in connection with the sale of Securities, except in each case for such rights that have been duly waived in writing.

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(28)                          Parties to Lock-Up Agreements.  Each of the persons listed on Exhibit C hereto has executed and delivered to the Representative a lock-up agreement in the form of Exhibit D hereto.  Exhibit C hereto contains a true, complete and correct list of all directors and officers of the Company.

(29)                          NYSE MKT LLC.  The Securities being sold hereunder by the Company have been approved for listing, subject only to official notice of issuance, on the NYSE MKT LLC.

(30)                          FINRA Matters.  The Company was, at the time the Initial Registration Statement was first filed with the Commission, and at all times thereafter has been, eligible to use Form S-3 pursuant to the standards for that form in effect immediately prior to October 21, 1992.

(31)                          Tax Returns.  The Company and its subsidiaries have filed all foreign, federal, state and local tax returns that are required to be filed or have obtained extensions thereof, except where the failure so to file would not, individually or in the aggregate, result in a Material Adverse Effect, and have paid all taxes (including, without limitation, any estimated taxes) required to be paid and any other assessment, fine or penalty, to the extent that any of the foregoing is due and payable, except for any such tax, assessment, fine or penalty that is currently being contested in good faith by appropriate actions and except for such taxes, assessments, fines or penalties the nonpayment of which would not, individually or in the aggregate, result in a Material Adverse Effect.

(32)                          Insurance.  Except as described in the Registration Statement, the General Disclosure Package and the Prospectus, the Company and its subsidiaries are insured by insurers or are self-insured against such losses and risks and in such amounts as the Company believes are adequate for the conduct of their businesses and as the Company believes are customary for the business in which they are engaged; all such policies of insurance insuring the Company and its subsidiaries are in full force and effect; the Company and its subsidiaries are in compliance with the terms of such policies in all material respects; neither the Company nor any of its subsidiaries has been refused any insurance coverage sought or applied for; and neither the Company nor any of its subsidiaries has any reason to believe that any of them will not be able to renew its existing insurance coverage as and when such coverage expires or to obtain similar coverage from similar insurers as may be necessary to continue its business and at a cost that would not, individually or in the aggregate, result in a Material Adverse Effect.  Except as otherwise set forth in the Registration Statement, the General Disclosure Package and the Prospectus, there are no material claims by the Company or any Subsidiary under any such policy or instrument as to which any insurance company is denying liability or defending under a reservation of rights clause.

(33)                          Accounting and Disclosure Controls.  Except as described in the Registration Statement, the General Disclosure Package and the Prospectus, the Company and its subsidiaries maintain and have established and maintained effective “internal control over financial reporting” (as defined in Rule 13a-15 of the 1934 Act Regulations).  The Company and its subsidiaries maintain a system of internal accounting controls

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sufficient to provide reasonable assurance that (A) transactions are executed in accordance with management’s general or specific authorizations; (B) transactions are recorded as necessary to permit preparation of financial statements in conformity with GAAP and to maintain asset accountability; (C) access to assets is permitted only in accordance with management’s general or specific authorization; and (D) the recorded accountability for assets is compared with the existing assets at reasonable intervals and appropriate action is taken with respect to any differences.  Except as described in the Registration Statement, the General Disclosure Package and the Prospectus, there has not been (1) at any time during the Company’s five consecutive fiscal years ended with and including the Company’s most recent fiscal year for which audited financial statements are included in the Registration Statement, the General Disclosure Package and the Prospectus or at any time subsequent thereto, any material weakness (as defined in Rule 1-02 of Regulation S-X of the Commission) in the Company’s internal control over financial reporting (whether or not remediated), or (2) any fraud, whether or not material, involving management or other employees who have a role in the Company’s internal control over financial reporting and, since the end of the Company’s most recent fiscal year for which audited financial statements are included in the Registration Statement, the General Disclosure Package and the Prospectus, there has been no change in the Company’s internal control over financial reporting that has materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting.  The Company and its subsidiaries have established, maintained and periodically evaluate the effectiveness of “disclosure controls and procedures” (as defined in Rules 13a-15 and 15d-15 under the 1934 Act); such disclosure controls and procedures are designed to ensure that information required to be disclosed by the Company in the reports that it files or submits under the 1934 Act and the interactive data in eXtensible Business Reporting Language included as an exhibit to the Registration Statement or incorporated by reference in the Registration Statement are recorded, processed, summarized and reported, within the time periods specified in the Commission’s rules and forms, and is accumulated and communicated to the Company’s management, including its principal executive officer or officers and principal financial officer or officers, as appropriate, to allow timely decisions regarding disclosure.

The Company’s independent public accountants and the audit committee of the Company’s board of directors have been advised of all material weaknesses and significant deficiencies (as defined in Rule 1-02 of Regulation S-X of the Commission) in the Company’s internal control over financial reporting and of all fraud, if any, whether or not material, involving management or other employees who have a role in the Company’s internal control over financial reporting, in each case that occurred or existed, or was first detected, at any time during the Company’s five consecutive fiscal years ended with and including the Company’s most recent fiscal year for which audited financial statements are included in the Registration Statement, the General Disclosure Package and the Prospectus or at any time subsequent thereto.

(34)                          Compliance with the Sarbanes-Oxley Act.  There is and has been no failure on the part of the Company or any of the Company’s directors or officers, in their capacities as such, to comply with any provision of the Sarbanes-Oxley Act with which

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any of them is required to comply, including Section 402 related to loans and Sections 302 and 906 related to certifications.

(35)                          Pending Proceedings and Examinations; Comment Letters.  The Registration Statement is not the subject of a pending proceeding or examination under Section 8(d) or 8(e) of the 1933 Act, and the Company is not the subject of a pending proceeding under Section 8A of the 1933 Act.  The Company has provided the Representative with true, complete and correct copies of any written comments received from the Commission by the Company or its legal counsel or accountants, and of any transcripts made by the Company, its legal counsel or accountants of any oral comments received from the Commission, with respect to the Registration Statement, any preliminary prospectus, the Prospectus, any Issuer Free Writing Prospectus or any document incorporated or deemed to be incorporated by reference therein and of all written responses thereto (in each case, other than comment letters or written responses that are publicly available on EDGAR), and no such comments remain unresolved.

(36)                          Absence of Manipulation.  Neither the Company nor any of its subsidiaries has taken, directly or indirectly, any action designed to or that would be reasonably expected to cause or result in stabilization or manipulation of the price of the Common Stock or any other “reference security” (as defined in Rule 100 of Regulation M under the 1934 Act (“Regulation M”)), whether to facilitate the sale or resale of the Securities or otherwise, and has taken no action that would directly or indirectly violate Regulation M. The Company acknowledges that the Underwriters may engage in passive market making transactions in the Securities on the NYSE MKT LLC in accordance with Regulation M.

(37)                          Statistical and Market-Related Data.  Any statistical, demographic, market-related and similar data included in the Registration Statement, the General Disclosure Package or the Prospectus are based on or derived from sources that the Company believes to be reliable and accurate.

(38)                          Foreign Corrupt Practices Act.  None of the Company, its subsidiaries nor any director or officer, nor to the knowledge of the Company, any agent, employee, affiliate or other person acting on behalf of the Company or any of its subsidiaries is aware of or has taken any action, directly or indirectly, that has resulted or would result in a violation by any such person of the FCPA, including, without limitation, any offer, payment, promise to pay or authorization of the payment of any money, or other property, gift, promise to give, or authorization of the giving of anything of value to any “foreign official” (as such term is defined in the FCPA) or any foreign political party or official thereof or any candidate for foreign political office, in contravention of the FCPA and the Company and its subsidiaries, and, to the knowledge of the Company, its other affiliates have conducted their businesses in compliance with the FCPA and have instituted and maintain policies and procedures designed to ensure, and which are reasonably expected to ensure, continued compliance therewith.

(39)                          Money Laundering Laws.  The operations of the Company and its subsidiaries are and have been conducted at all times in compliance with applicable

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financial recordkeeping and reporting requirements of the Currency and Foreign Transactions Reporting Act of 1970, as amended, the money laundering statutes of all applicable jurisdictions, the rules and regulations thereunder and any related or similar rules, regulations or guidelines, issued, administered or enforced by any governmental agency (collectively, “Money Laundering Laws”) and no action, suit or proceeding by or before any court or governmental agency, authority or body or any arbitrator involving the Company or any of its subsidiaries with respect to the Money Laundering Laws is pending or, to the knowledge of the Company, threatened.

(40)                          OFAC.  None of the Company, its subsidiaries nor any director or officer, nor, to the knowledge of the Company, any agent, employee, affiliate or other person acting on behalf of the Company or any of its subsidiaries is currently subject to any U.S. sanctions administered or enforced by OFAC; and the Company will not directly or indirectly use any of the proceeds from the sale of Securities by the Company in the offering contemplated by this Agreement, or lend, contribute or otherwise make available any such proceeds to any subsidiary, joint venture partner or other person or entity, for the purpose of financing any activities or business of or with any person or entity or in any country or territory that, at the time of such funding or facilitation, is subject to any U.S. sanctions administered or enforced by OFAC.

(41)                          ERISA Compliance.  None of the following events has occurred or exists: (i) a failure to fulfill the obligations, if any, under the minimum funding standards of Section 302 of ERISA with respect to a Plan (as defined below) determined without regard to any waiver of such obligations or extension of any amortization period; (ii) an audit or investigation by the Internal Revenue Service, the U.S. Department of Labor, the Pension Benefit Guaranty Corporation or any other federal, state or foreign governmental or regulatory agency with respect to the employment or compensation of employees by the Company or any of its subsidiaries that might reasonably be expected, individually or in the aggregate, to result in a Material Adverse Effect; or (iii) any breach of any contractual obligation, or any violation of law or applicable qualification standards, with respect to the employment or compensation of employees by the Company or any of its subsidiaries that might reasonably be expected, individually or in the aggregate, to result in a Material Adverse Effect.  None of the following events has occurred or is reasonably likely to occur: (i) a material increase in the “accumulated post-retirement benefit obligations” (within the meaning of Statement of Financial Accounting Standards 106) of the Company and its subsidiaries compared to the amount of such obligations in the Company’s most recently completed fiscal year; (ii) any event or condition giving rise to a liability under Title IV of ERISA that might reasonably be expected, individually or in the aggregate, to result in a Material Adverse Effect; or (iii) the filing of a claim by one or more employees or former employees of the Company or any of its subsidiaries related to its or their employment that might reasonably be expected, individually or in the aggregate, to result in a Material Adverse Effect.  For purposes of this paragraph and the definition of ERISA, the term “Plan” means a plan (within the meaning of Section 3(3) of ERISA) with respect to which the Company or any of its subsidiaries may have any liability.

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(42)                          Lending and Other Relationship.  Except as disclosed in the Registration Statement, the General Disclosure Package and the Prospectus, (A) neither the Company nor any of its subsidiaries has any outstanding borrowings from or any material lending or other relationship with an Underwriter or any bank or other lending institution affiliated with any of the Underwriters that would be required to be disclosed in the Registration Statement, the General Disclosure Package and the Prospectus, and (B) neither the Company nor any of its subsidiaries intends to use any of the proceeds from the sale of the Securities to reduce or retire the balance of any loan or credit facility extended by any Underwriter or any affiliate of any Underwriter or otherwise direct any such proceeds to any Underwriter or affiliate of an Underwriter.

(43)                          Changes in Management.  Except as disclosed in the Registration Statement, the General Disclosure Package and the Prospectus, none of the persons who were officers or directors of the Company as of the date of the Pre-Pricing Prospectus has given oral or written notice to the Company or any of its subsidiaries of his or her resignation, nor has any such officer or director been terminated by the Company or otherwise removed from his or her office or from the board of directors, as the case may be (including, without limitation, any such termination or removal that is to be effective as of a future date).

(44)                          Transfer Taxes.  There are no transfer taxes or other similar fees or charges under federal law or laws of any state or any political subdivision thereof, required to be paid by the Company in connection with the execution and delivery of this Agreement or the issuance or sale by the Company of the Securities to be sold by the Company to the Underwriters hereunder.

(45)                          Related Party Transactions.  No relationship, direct or indirect, exists between or among the Company or any of its subsidiaries or between or among the Company or any of its subsidiaries on the one hand, and the directors, officers, managers, stockholders, partners, members, customers or suppliers of the Company or any of its subsidiaries on the other hand, that is required to be described or included in the Registration Statement, the Pre-Pricing Prospectus or the Prospectus and which is not so described or included.

(46)                          Stop Transfer Instructions.  The Company has, with respect to any Common Stock (other than the Securities to be sold pursuant to this Agreement) or other capital stock or any securities convertible into or exercisable or exchangeable for Common Stock or other capital stock owned or held (of record or beneficially) by any persons who have entered into or are required to enter into an agreement in the form of Exhibit D hereto, instructed the transfer agent or other registrar to enter stop transfer instructions and implement stop transfer procedures with respect to such securities during the Lock-Up Period; and, during the Lock-Up Period, the Company will not cause or permit any waiver, release, modification or amendment of any such stop transfer instructions or stop transfer procedures without the prior written consent of Wells Fargo.

(47)                          Offering Materials.  Without limitation to the provisions of Section 16 hereof, the Company has not distributed and will not distribute, directly or indirectly

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(other than through the Underwriters), any “written communication” (as defined in Rule 405 under the 1933 Act) or other offering materials in connection with the offering or sale of the Securities, other than the Pre-Pricing Prospectus, the Prospectus, any amendment or supplement to any of the foregoing that are filed with the Commission and any Permitted Free Writing Prospectuses (as defined in Section 16 hereof).

(48)                          No Restrictions on Dividends.  Neither the Company nor any of its subsidiaries is a party to or otherwise bound by any instrument or agreement that limits or prohibits or could limit or prohibit, directly or indirectly, the Company from paying any dividends or making other distributions on its capital stock, and no subsidiary of the Company is a party to or otherwise bound by any instrument or agreement that limits or prohibits or could limit or prohibit, directly or indirectly, any subsidiary of the Company from paying any dividends or making any other distributions on its capital stock, limited or general partnership interests, limited liability company interests, or other equity interests, as the case may be, or from repaying any loans or advances from, or (except for instruments or agreements that by their express terms prohibit the transfer or assignment thereof or of any rights thereunder) transferring any of its properties or assets to, the Company or any other subsidiary, in each case, except as disclosed in the Registration Statement, the General Disclosure Package and the Prospectus.

(49)                          Brokers.  There is not a broker, finder or other party that is entitled to receive from the Company any brokerage or finder’s fee or other fee or commission as a result of any of the transactions contemplated by this Agreement, except for underwriting discounts and commissions in connection with the sale of the Securities to the Underwriters pursuant to this Agreement.

(50)                          Forward-Looking and Supporting Information. Each of the statements made by the Company in the Registration Statement, the General Disclosure Package, the Pre-Pricing Prospectus and to be made in the Prospectus (and any supplements thereto) within the coverage of Rule 175(b), including (but not limited to) any statements with respect to projected revenue and production, and any statements made in support thereof or related thereto under the heading “Prospectus Supplement Summary,” was made or will be made with a reasonable basis and in good faith.

(51)                          Private Placement. The issuance of shares of Common Stock to TIAA Oil and Gas Investments, LLC, a Delaware limited liability company (“TIAA”), pursuant to the Stock Purchase Agreement, dated as of August 6, 2013, by and between the Company and TIAA (the “Private Placement”), is exempt from the registration requirements of the 1933 Act, the 1933 Act Regulations and securities laws of any state having jurisdiction with respect thereto, and neither the Company nor any of its subsidiaries has taken or will take any action that would cause the loss of such exemption.  The Company has not sold or issued any securities that would be integrated with the offering of shares of Common Stock contemplated by this Agreement pursuant to the 1933 Act, the 1933 Act Regulations or the interpretations thereof by the Commission.

(52)                          Interactive Data.  The interactive data in eXtensible Business Reporting Language included as an exhibit to the Registration Statement or incorporated by

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reference in the Registration Statement fairly presents the information called for in all material respects and has been prepared in accordance with the Commission’s rules and guidelines applicable thereto.

(b)                                 Certificates.  Any certificate signed by any officer of the Company or any of its subsidiaries (whether signed on behalf of such officer, the Company or such subsidiary) and delivered to the Representative or to counsel for the Underwriters shall be deemed a representation and warranty by the Company to each Underwriter as to the matters covered thereby.

SECTION 2.  Sale and Delivery to Underwriters; Closing.

(a)                                 Initial Securities.  On the basis of the representations and warranties herein contained and subject to the terms and conditions herein set forth, the Company agrees to sell to the Underwriters the Initial Securities, and each Underwriter, severally and not jointly, agrees to purchase the respective number of Initial Securities set forth opposite its name in Exhibit A hereto plus any additional number of Initial Securities that such Underwriter may become obligated to purchase pursuant to the provisions of Section 10 hereof, subject to such adjustments among the Underwriters as the Representative in its sole discretion shall make to eliminate any sales or purchases of fractional Securities, in each case at a price of $5.95937 per share (the “Purchase Price”).

(b)                                 Option Securities.  In addition, on the basis of the representations and warranties herein contained and subject to the terms and conditions herein set forth, the Company hereby grants an option to the Underwriters, severally and not jointly, to purchase up to an aggregate of 2,250,000 Option Securities at a price per share equal to the Purchase Price referred to in Section 2(a) above; provided that the price per share for any Option Securities shall be reduced by an amount per share equal to any dividends or distributions declared, paid or payable by the Company on the Initial Securities but not payable on such Option Securities.  The option hereby granted will expire at 11:59 P.M. (New York City time) on the 30th day after the date hereof and may be exercised in whole or in part from time to time only for the purpose of covering over-allotments which may be made in connection with the offering and distribution of the Initial Securities upon notice by the Representative to the Company setting forth the number of Option Securities as to which the several Underwriters are then exercising the option and the time and date of payment and delivery for such Option Securities.  Any such time and date of delivery (an “Option Closing Date”) shall be determined by the Representative, but shall not be later than seven full business days after the exercise of said option (unless postponed in accordance with the provisions of Section 10), nor in any event prior to the Closing Date.  If the option is exercised as to all or any portion of the Option Securities, the Company will sell to the Underwriters the total number of Option Securities then being purchased and each Underwriter agrees, severally and not jointly, to purchase the number of Option Securities that bears the same proportion to the total number of Option Securities to be purchased as the number of Initial Securities set forth on Exhibit A opposite the name of such Underwriter, plus any additional number of Initial Securities that such Underwriter may become obligated to purchase pursuant to the provisions of Section 10 hereof, bears to the total number of Initial Securities, subject in each case to such adjustments as the Representative in its discretion shall make to eliminate any sales or purchases of fractional shares.

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(c)                                  Payment.  Payment of the purchase price for, and delivery of, the Initial Securities shall be made at the offices of Andrews Kurth LLP, 600 Travis, Suite 4200, Houston, Texas 77002, or at such other place as shall be agreed upon by the Representative and the Company, at 9:00 A.M. (New York City time) on August 14, 2013 (unless postponed in accordance with the provisions of Section 10 hereof), or such other time not later than five business days after such date as shall be agreed upon by the Representative and the Company (such time and date of payment and delivery being herein called the “Closing Date”).

In addition, in the event that any or all of the Option Securities are purchased by the Underwriters, payment of the purchase price for, and delivery of, such Option Securities shall be made at the above-mentioned offices at 9:00 A.M. (New York City time), or at such other place as shall be agreed upon by the Representative and the Company, on each Option Closing Date as specified in the notice from the Representative to the Company.

Payment shall be made to the Company by wire transfer of immediately available funds to a single bank account designated by the Company against delivery to the Representative for the respective accounts of the Underwriters of the Securities to be purchased by them.  It is understood that each Underwriter has authorized the Representative, for its account, to accept delivery of, receipt for, and make payment of the purchase price for, the Initial Securities and the Option Securities, if any, which it has agreed to purchase.  Wells Fargo, individually and not as Representative of the Underwriters, may (but shall not be obligated to) make payment of the purchase price for the Initial Securities or the Option Securities, if any, to be purchased by any Underwriter whose funds have not been received by the Closing Date or the relevant Option Closing Date, as the case may be, but such payment shall not relieve such Underwriter from its obligations hereunder.

(d)                                 Delivery of Securities.  Delivery of the Initial Securities and any Option Securities shall be made through the facilities of DTC unless the Representative shall otherwise instruct.

SECTION 3.  Covenants of the Company.  The Company covenants with each Underwriter as follows:

(a)         Compliance with Securities Regulations and Commission Requests.  The Company, subject to Section 3(b) hereof, will comply with the requirements of Rule 430B and Rule 433 and will notify the Representative immediately, and confirm the notice in writing, (i) when the Initial Registration Statement, any Rule 462(b) Registration Statement or any post-effective amendment to the Registration Statement shall be declared or become effective, or when any preliminary prospectus, the Prospectus or any Issuer Free Writing Prospectus or any amendment or supplement to any of the foregoing shall have been filed, (ii) of the receipt of any comments from the Commission (and shall promptly furnish the Representative with a copy of any comment letters and any transcript of oral comments, and shall furnish the Representative with copies of any written responses thereto a reasonable amount of time prior to the proposed filing thereof with the Commission and will not file any such response to which the Representative or counsel for the Underwriters shall object), (iii) of any request by the Commission for any amendment to the Registration Statement or any amendment or

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supplement to any preliminary prospectus or the Prospectus, any document incorporated or deemed to be incorporated by reference therein or any Issuer Free Writing Prospectus or for additional information, (iv) of the issuance by the Commission of any stop order suspending the effectiveness of the Registration Statement or of any order preventing or suspending the use of any preliminary prospectus, the Prospectus or any Issuer Free Writing Prospectus or any amendment or supplement to any of the foregoing.  The Company will make every reasonable effort to prevent the issuance of any stop order and the suspension or loss of any qualification of the Securities for offering or sale and any loss or suspension of any exemption from any such qualification and, if any such stop order is issued, or any such suspension or loss occurs, to obtain the lifting thereof at the earliest possible moment.

(b)         Filing of Amendments.  The Company will give the Representative notice of its intention to file or prepare any amendment to the Registration Statement, any Rule 462(b) Registration Statement, any Issuer Free Writing Prospectus or any amendment, supplement or revision to any preliminary prospectus, the Prospectus or any Issuer Free Writing Prospectus, whether pursuant to the 1933 Act or otherwise, and the Company will furnish the Representative with copies of any such documents within a reasonable amount of time prior to such proposed filing or use, as the case may be, and will not file or use any such document to which the Representative or counsel for the Underwriters shall object.  The Company has given the Representative notice of any filings made pursuant to the 1934 Act or the 1934 Act Regulations within 48 hours prior to the Applicable Time.  The Company will give the Representative notice of its intention to make any filing pursuant to the 1934 Act or the 1934 Act Regulations from the Applicable Time through the Closing Date (or, if later, through the end of the period during which the Prospectus is required (or, but for the provisions of Rule 172, would be required) to be delivered by applicable law (whether to meet the requests of purchasers pursuant to Rule 173(d) or otherwise)) and will furnish the Representative with copies of any such documents a reasonable amount of time prior to such proposed filing, as the case may be, and will not file or use any such document to which the Representative or counsel for the Underwriters shall object.

(c)          Delivery of Registration Statements.  The Company has furnished or will deliver to the Representative and counsel for the Underwriters, without charge, copies of the Registration Statement and of each amendment thereto (including exhibits filed therewith or incorporated by reference therein and documents incorporated or deemed to be incorporated by reference therein or otherwise deemed to be a part thereof) and copies of all consents and certificates of experts.

(d)         Delivery of Prospectuses.  The Company has delivered to each Underwriter, without charge, as many copies of each preliminary prospectus and any amendments or supplements thereto as such Underwriter reasonably requested, and the Company hereby consents to the use of such copies for purposes permitted by the 1933 Act.  Upon request, the Company will furnish to each Underwriter, without charge, during the period when the Prospectus is required (or, but for the provisions of Rule 172, would be required) to be delivered by applicable law (whether to meet the request of purchasers pursuant to Rule 173(d) or otherwise), such number of copies of the Pre-

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Pricing Prospectus, the Prospectus and any Issuer Free Writing Prospectus and any amendments or supplements to any of the foregoing as such Underwriter may reasonably request.

(e)          Continued Compliance with Securities Laws.  The Company will comply with the 1933 Act, the 1933 Act Regulations, the 1934 Act and the 1934 Act Regulations so as to permit the completion of the distribution of the Securities as contemplated by this Agreement, the General Disclosure Package and the Prospectus.  If at any time when a prospectus is required (or, but for the provisions of Rule 172, would be required) by applicable law to be delivered in connection with sales of the Securities (whether to meet the request of purchasers pursuant to Rule 173(d) or otherwise), any event shall occur or condition shall exist as a result of which it is necessary (or if the Representative or counsel for the Underwriters shall notify the Company that, in their judgment, it is necessary) to amend the Registration Statement or amend or supplement the General Disclosure Package or the Prospectus so that the Registration Statement, the General Disclosure Package or the Prospectus, as the case may be, will not include any untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made or then prevailing, not misleading or if it is necessary (or, if the Representative or counsel for the Underwriters shall notify the Company that, in their judgment, it is necessary) to amend the Registration Statement or amend or supplement the General Disclosure Package or the Prospectus in order to comply with the requirements of the 1933 Act, the 1933 Act Regulations, the 1934 Act or the 1934 Act Regulations, the Company will promptly notify the Representative of such event or condition and of its intention to file such amendment or supplement (or, if the Representative or counsel for the Underwriters shall have notified the Company as aforesaid, the Company will promptly notify the Representative of its intention to prepare such amendment or supplement) and will promptly prepare and file with the Commission, subject to Section 3(b) hereof, such amendment or supplement as may be necessary to correct such untrue statement or omission or to comply with such requirements, and, in the case of an amendment or post-effective amendment to the Registration Statement, the Company will use its best efforts to have such amendment declared or become effective as soon as practicable, and the Company will furnish to the Underwriters such number of copies of such amendment or supplement as the Underwriters may reasonably request.  If at any time an Issuer Free Writing Prospectus conflicts with the information contained in the Registration Statement or if an event shall occur or condition shall exist as a result of which it is necessary (or, if the Representative or counsel for the Underwriters shall notify the Company that, in their judgment, it is necessary) to amend or supplement such Issuer Free Writing Prospectus so that it will not include an untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made or then prevailing, not misleading, or if it is necessary (or, if the Representative or counsel for the Underwriters shall notify the Company that, in their judgment, it is necessary) to amend or supplement such Issuer Free Writing Prospectus in order to comply with the requirements of the 1933 Act or the 1933 Act Regulations, the Company will promptly notify the Representative of such event or condition and of its intention to file such amendment or supplement (or, if the Representative or counsel for the Underwriters shall have notified the Company as aforesaid, the Company will

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promptly notify the Representative of its intention to prepare such amendment or supplement) and will promptly prepare and, if required by the 1933 Act or the 1933 Act Regulations, file with the Commission, subject to Section 3(b) hereof, such amendment or supplement as may be necessary to eliminate or correct such conflict, untrue statement or omission or to comply with such requirements, and the Company will furnish to the Underwriters such number of copies of such amendment or supplement as the Underwriters may reasonably request.

(f)           Blue Sky and Other Qualifications.  The Company will use its best efforts, in cooperation with the Underwriters, to qualify the Securities for offering and sale, or to obtain an exemption for the Securities to be offered and sold, under the applicable securities laws of such states and other jurisdictions (domestic or foreign) as the Representative may designate and to maintain such qualifications and exemptions in effect for so long as required for the distribution of the Securities (but in no event for a period of not less than one year from the date of this Agreement); provided, however, that the Company shall not be obligated to file any general consent to service of process or to qualify as a foreign corporation or as a dealer in securities in any jurisdiction in which it is not so qualified or to subject itself to taxation in respect of doing business in any jurisdiction in which it is not otherwise so subject.  In each jurisdiction in which the Securities have been so qualified or exempt, the Company will file such statements and reports as may be required by the laws of such jurisdiction to continue such qualification or exemption, as the case may be, in effect for so long as required for the distribution of the Securities (but in no event for a period of not less than one year from the date of this Agreement).

(g)          Rule 158.  The Company will timely file such reports pursuant to the 1934 Act as are necessary in order to make generally available to its securityholders as soon as practicable an earnings statement for the purposes of, and to provide to the Underwriters the benefits contemplated by, the last paragraph of Section 11(a) of the 1933 Act.

(h)         Use of Proceeds.  The Company will use the net proceeds received by it from the sale of the Securities in the manner specified in the Pre-Pricing Prospectus and the Prospectus under “Use of Proceeds.”

(i)             Listing.  In the case of any Securities that are not listed on the NYSE MKT LLC, the Company will use its best efforts to effect the listing of the Securities on such exchange as and when required by this Agreement.

(j)            Restriction on Sale of Securities.  During the Lock-Up Period (as the same may be extended pursuant to the provisions set forth in the next sentence), the Company will not, without the prior written consent of Wells Fargo, directly or indirectly:

(i)                                     issue, offer, pledge, sell, contract to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant to purchase, lend or otherwise transfer or dispose of any shares of Common Stock or other capital stock or any securities convertible into or exercisable or exchangeable for Common Stock or other capital stock;

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(ii)                                  file or cause the filing of any registration statement under the 1933 Act with respect to any Common Stock or other capital stock or any securities convertible into or exercisable or exchangeable for any Common Stock or other capital stock (other than any Rule 462(b) Registration Statement filed to register Securities to be sold to the Underwriters pursuant to this Agreement); or

(iii)                               enter into any swap or other agreement, arrangement, hedge or transaction that transfers to another, in whole or in part, directly or indirectly, any of the economic consequences of ownership of any Common Stock or other capital stock or any securities convertible into or exercisable or exchangeable for any Common Stock or other capital stock,

whether any transaction described in clause (i) or (iii) above is to be settled by delivery of Common Stock, other capital stock, other securities, in cash or otherwise, or publicly announce any intention to do any of the foregoing. Moreover, if:

(x)                                 during the last 17 days of the Lock-Up Period the Company issues an earnings release or material news or a material event relating to the Company occurs; or

(y)                                 prior to the expiration of the Lock-Up Period, the Company announces that it will release earnings results or becomes aware that material news or a material event relating to the Company will occur during the 16-day period beginning on the last day of the Lock-Up Period,

the Lock-Up Period shall be extended and the restrictions imposed by this Section 3(j) shall continue to apply until the expiration of the 18-day period beginning on the date of issuance of the earnings release or the occurrence of the material news or material event, as the case may be, unless Wells Fargo waives, in writing, such extension; provided, however, that such extension shall not apply if (I) within three business days prior to the 15th calendar day before the last day of the Lock-Up Period, the Company delivers a certificate to the Representative, signed by the Chief Financial Officer or Chief Executive Officer of the Company, certifying on behalf of the Company that (A) the Securities are “actively traded securities” (as defined in Regulation M), (B) the Company meets the applicable requirements of paragraph (a)(1) of Rule 139 in the manner contemplated by FINRA Rule 2711(f)(4) and (C) the provisions of FINRA Rule 2711(f)(4) are not applicable to any research reports relating to the Company published or distributed by the Underwriters during the 15 days before or after the last day of the Lock-Up Period (before giving effect to such extension).  In the event of any extension of the Lock-Up Period pursuant to the immediately preceding sentence, the Company shall notify the Representative and each person listed in Exhibit C hereto of such extension as promptly as practicable and in any event prior to the last day of the Lock-Up Period prior to giving effect to such extension.

Notwithstanding the provisions set forth in the immediately preceding paragraph, the Company may, without the prior written consent of Wells Fargo:

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(1)                                 issue Securities to the Underwriters pursuant to this Agreement;

(2)                                 issue shares, and options to purchase shares, of Common Stock and restricted stock units pursuant to stock option plans, stock purchase or other equity incentive plans or any dividend reinvestment plan described in the General Disclosure Package and the Prospectus, as those plans are in effect on the date of this Agreement;

(3)                                 issue shares of Common Stock upon the exercise of stock options issued under stock option or other equity incentive plans referred to in clause (2) above, as those plans are in effect on the date of this Agreement, or upon the exercise of warrants or convertible securities outstanding on the date of this Agreement, as those warrants and convertible securities are in effect on the date of this Agreement; and

(4)                                 issue up to 11,350,000 shares of Common Stock to TIAA pursuant to the Private Placement,

provided, however, that in the case of any issuance described in clause (3) above, it shall be a condition to the issuance that each recipient executes and delivers to Wells Fargo, acting on behalf of the Underwriters, not later than one business day prior to the date of such issuance, a written agreement, in substantially the form of Exhibit D to this Agreement and otherwise satisfactory in form and substance to Wells Fargo.

(k)         Reporting Requirements.  The Company, during the period when the Prospectus is required (or, but for the provisions of Rule 172, would be required) by applicable law to be delivered (whether to meet the request of purchasers pursuant to Rule 173(d) or otherwise), will file all documents required to be filed with the Commission pursuant to the 1934 Act and the 1934 Act Regulations within the time periods required by the 1934 Act and the 1934 Act Regulations.

(l)                                     Preparation of Prospectus.  Immediately following the execution of this Agreement, the Company will, subject to Section 3(b) hereof, prepare the Prospectus, which shall contain the selling terms of the Securities, the plan of distribution thereof and such other information as may be required by the 1933 Act or the 1933 Act Regulations or as the Representative and the Company may deem appropriate, and if requested by the Representative, will prepare an Issuer Free Writing Prospectus containing the information set forth in Exhibit H hereto and such other information as may be required by Rule 433 or as the Representative and the Company may deem appropriate, and will file or transmit for filing with the Commission the Prospectus in accordance with the provisions of Rule 430B and in the manner and within the time period required by Rule 424(b) (without reliance on Rule 424(b)(8)) and any such Issuer Free Writing Prospectus in the manner and within the time period required by Rule 433.

(m)     New Registration Statement.  If, immediately prior to the third anniversary of the initial effective date of the Registration Statement (the “Renewal Deadline”), any of the Securities remains unsold by the Underwriters, the Company will, prior to the

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Renewal Deadline, if it has not already done so, file a new registration statement relating to the Securities, and notify the Representative when such filing has been made and use its best efforts to cause such registration statement to be declared effective within 180 days after the Renewal Deadline.  The Company will furnish the Representative with copies of any such new registration statement a reasonable amount of time prior to such proposed filing and, notwithstanding the foregoing provisions of this paragraph, will not file any such proposed registration statement to which the Representative or counsel for the Underwriters shall object.  In any such case, the Company will take all other action as is necessary or appropriate to permit the public offering and sale of the Securities to continue from and after the Renewal Deadline as contemplated in the expired registration statement relating to the Securities.  References in this Agreement to the “Registration Statement” shall include any such new shelf registration statement from and after the time it is filed with the Commission, mutatis mutandis.

SECTION 4.  Payment of Expenses.

(a)                                 Expenses.  The Company will pay all expenses incident to the performance of its obligations under this Agreement, including (i) the preparation, printing and filing of the Registration Statement and each amendment thereto (in each case including exhibits) and any costs associated with electronic delivery of any of the foregoing, (ii) the word processing and delivery to the Underwriters of this Agreement and such other documents as may be required in connection with the offering, purchase, sale, issuance or delivery of the Securities, (iii) the preparation, issuance and delivery of the certificates for the Securities and the issuance and delivery of the Securities to be sold by the Company to the Underwriters, including any stock or other transfer taxes and any stamp or other taxes or duties payable in connection with the sale, issuance or delivery of the Securities to the Underwriters, (iv) the fees and disbursements of the counsel, accountants and other advisors to the Company, (v) the qualification or exemption of the Securities under securities laws in accordance with the provisions of Section 3(f) hereof, including filing fees and the reasonable fees and disbursements of counsel for the Underwriters in connection therewith and in connection with the preparation of the Blue Sky Survey and any supplements thereto, (vi) the preparation, printing and delivery to the Underwriters of copies of each preliminary prospectus, any Permitted Free Writing Prospectus and the Prospectus and any amendments or supplements to any of the foregoing and any costs associated with electronic delivery of any of the foregoing, (vii) the preparation, printing and delivery to the Underwriters of copies of the Blue Sky Survey and any Canadian “wrapper” and any supplements thereto and any costs associated with electronic delivery of any of the foregoing, (viii) the fees and expenses of the Attorneys-in-Fact, the Custodian and the transfer agent and registrar for the Securities, (ix) the filing fees incident to, and the reasonable fees and disbursements of counsel to the Underwriters in connection with, the review, if any, by FINRA of the terms of the sale of the Securities, (x) the fees and expenses incurred in connection with the listing of the Securities on the NYSE MKT LLC, (xi) the costs and expenses of the Company and any of its officers, directors, counsel or other representatives in connection with presentations or meetings undertaken in connection with the offering of the Securities, including, without limitation, expenses associated with the production of road show slides and graphics and the production and hosting of any electronic road shows, fees and expenses of any consultants engaged in connection with road show presentations, and, with the prior approval of the Company, travel, lodging, transportation, and other expenses of the officers, directors, counsel and other

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representatives of the Company incurred in connection with any such presentations or meetings, and (xii) the reasonable fees and disbursements of counsel for the Underwriters in connection with the copying and delivery of closing documents and other documents relating to the offering contemplated hereby (and in connection with the preparation and delivery of any electronic versions or compilations of such documents) to the Company, the Company’s accountants and counsel and the Underwriters. Except as provided for in this Section 4 or Section 6 and Section 7 hereof, the Underwriters shall pay their own expenses, including the fees and disbursements of its counsel.

(b)                                 Termination of Agreement.  If this Agreement is terminated by the Representative in accordance with the provisions of Section 5, Section 9(a)(i), Section 9(a)(iii)(A) or Section 9(a)(v) hereof, the Company shall reimburse the Underwriters for all of their out-of-pocket expenses, including the reasonable fees and disbursements of counsel for the Underwriters.

SECTION 5.  Conditions of Underwriters’ Obligations.  The obligations of the several Underwriters hereunder are subject to the accuracy of the representations and warranties of the Company contained in this Agreement, or in certificates signed by any officer of the Company or any subsidiary of the Company (whether signed on behalf of such officer, the Company or such subsidiary) delivered to the Representative or counsel for the Underwriters, to the performance by the Company of its covenants and other obligations hereunder, and to the following further conditions:

(a)         Effectiveness of Registration Statement.  The Initial Registration Statement and any post-effective amendments thereto and any Rule 462(b) Registration Statement shall have become effective, been declared or become effective, as the case may be, and no stop order suspending the effectiveness of the Initial Registration Statement or any Rule 462(b) Registration Statement shall have been issued under the 1933 Act or proceedings therefor initiated or, to the knowledge of the Company, threatened by the Commission, and any request on the part of the Commission for additional information shall have been complied with to the reasonable satisfaction of the Representative.  The Prospectus shall have been filed with the Commission in the manner and within the time period required by Rule 424(b) (without reliance upon Rule 424(b)(8)) and each Issuer Free Writing Prospectus required to be filed with the Commission shall have been filed in the manner and within the time period required by Rule 433, and, prior to the Closing Date, the Company shall have provided evidence satisfactory to the Representative of such timely filings.

(b)         Opinion of Counsel for Company.  At the Closing Date, the Representative shall have received the favorable opinions, dated as of Closing Date, of Skadden, Arps, Slate, Meagher and Flom LLP, counsel for the Company (“Company Counsel”), in form and substance satisfactory to the Representative, together with signed or reproduced copies of such opinion for each of the other Underwriters, to the effect set forth in Exhibit E hereto and to such further effect as the Representative may reasonably request, and of Davis Graham & Stubbs LLP, special Colorado counsel to the Company, in form and substance satisfactory to the Representative, together with signed or reproduced copies of such opinions for each of the other Underwriters, to the effect set

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forth in Exhibit F hereto and to such further effect as the Representative may reasonably request.

(c)          Opinion of Counsel for Underwriters.  At the Closing Date, the Representative shall have received the favorable letter, dated as of Closing Date, of Andrews Kurth LLP, counsel for the Underwriters (“Underwriters’ Counsel”), together with signed or reproduced copies of such letter for each of the other Underwriters, with respect to the Securities to be sold by the Company pursuant to this Agreement, the Initial Registration Statement, any Rule 462(b) Registration Statement, the General Disclosure Package and the Prospectus and any amendments or supplements thereto and such other matters as the Representative may reasonably request.

(d)         Officers’ Certificate.  (A) At the Closing Date or the applicable Option Closing Date, as the case may be, there shall not have been, since the date hereof or since the respective dates as of which information is given in the Registration Statement, the General Disclosure Package and the Prospectus (in each case, exclusive of any amendments or supplements thereto subsequent to the date of this Agreement), any material adverse change or any development that could reasonably be expected to result in a material adverse change in the condition (financial or other), results of operations, business, properties, management or prospects of the Company and its subsidiaries taken as a whole, whether or not arising in the ordinary course of business, and, at the Closing Date, the Representative shall have received a certificate, signed on behalf of the Company by the President or the Chief Executive Officer of the Company and the Chief Financial Officer or Chief Accounting Officer of the Company, dated as of the Closing Date, to the effect that (i) there has been no such material adverse change, (ii) the representations and warranties of the Company in this Agreement are true and correct at and as of the Closing Date with the same force and effect as though expressly made at and as of Closing Date, (iii) the Company has complied with all agreements and satisfied all conditions on its part to be performed or satisfied at or prior to Closing Date under or pursuant to this Agreement, and (iv) no stop order suspending the effectiveness of the Registration Statement has been issued and no proceedings for that purpose have been instituted or are pending or, to the knowledge of the Company, are contemplated by the Commission. (B) On the date hereof, the Representative shall have received a certificate, signed on behalf of the Company by the Chief Financial Officer of the Company, dated as of the date hereof, as set forth in Exhibit I hereto.

(e)          Accountants’ Comfort Letters.  (i) At the time of the execution of this Agreement, the Representative shall have received from KPMG LLP a letter, in form and substance satisfactory to the Representative and dated the date of this Agreement, together with signed or reproduced copies of such letter for each of the other Underwriters, containing statements and information of the type ordinarily included in accountants’ “comfort letters” to underwriters with respect to the financial statements and certain financial information of the Company contained in the Registration Statement, the General Disclosure Package, any Issuer Free Writing Prospectuses (other than any electronic road show) and the Prospectus and any amendments or supplements to any of the foregoing and confirming that they are independent public or certified public accountants as required by the 1933 Act, the 1934 Act and the PCAOB and in

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compliance with the applicable requirements relating to the qualification of accountants under Rule 2-01 of Regulation S-X. (ii) At the time of the execution of this Agreement, the Representative shall have received from EKS&H LLLP (together with KPMG LLP, the “Accountants”) a letter, in form and substance satisfactory to the Representative and dated the date of this Agreement.

(f)           Bring-down Comfort Letter.  At the Closing Date, the Representative shall have received from each of the Accountants a letter, in form and substance satisfactory to the Representative and dated as of Closing Date, to the effect that they reaffirm the statements made in the respective letters furnished by each pursuant to Section 5(e) hereof, except that the specified date referred to shall be a date not more than three business days prior to Closing Date.

(g)          Reserve Engineers’ Comfort Letters.  At the time of the execution of this Agreement, the Representative shall have received from each of CGA and Ryder Scott Company, L.P. (the “Reserve Engineers”) a letter, in form and substance satisfactory to the Representative and dated the date of this Agreement, together with signed or reproduced copies of such letter for each of the other Underwriters, covering certain matters relating to information about the reserves of the Company contained in the Registration Statement, the General Disclosure Package, any Issuer Free Writing Prospectuses (other than any electronic road show) and the Prospectus and any amendments or supplements to any of the foregoing.

(h)         Bring-down Reserve Engineers’ Comfort Letters.  At the Closing Date, the Representative shall have received from each of the Reserve Engineers a letter, in form and substance satisfactory to the Representative and dated as of the Closing Date, to the effect that they reaffirm the statements made in the respective letter furnished by each pursuant to Section 5(g) hereof.

(i)             Approval of Listing.  At the Closing Date and each Option Closing Date, if any, the Securities to be purchased by the Underwriters from the Company at such time shall have been approved for listing on the NYSE MKT LLC, subject only to official notice of issuance.

(j)            Lock-up Agreements.  Prior to the date of this Agreement, the Representative shall have received an agreement substantially in the form of Exhibit D hereto signed by each of the persons listed in Exhibit C hereto.

(k)         Conditions to Purchase of Option Securities.  In the event that the Underwriters exercise their option provided in Section 2(b) hereof to purchase all or any portion of the Option Securities on any Option Closing Date that is after the Closing Date, the obligations of the several Underwriters to purchase the applicable Option Securities shall be subject to the conditions specified in the introductory paragraph of this Section 5 and to the further condition that, at the applicable Option Closing Date, the Representative shall have received:

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(1)                                 Opinion of Counsel for Company.  The favorable opinion of Company Counsel and of each other counsel named in Section 5(b), each in form and substance satisfactory to the Representative and dated as of such Option Closing Date, relating to the Option Securities to be purchased on such Option Closing Date and otherwise to the same effect as the respective opinions required by Section 5(b) hereof.

(2)                                 Opinion of Counsel for Underwriters.  The favorable opinion of Underwriters’ Counsel, in form and substance satisfactory to the Representative and dated as of such Option Closing Date, relating to the Option Securities to be purchased on such Option Closing Date and otherwise to the same effect as the opinion required by Section 5(c) hereof.

(3)                                 Officers’ Certificate.  A certificate, dated as of such Option Closing Date, to the effect set forth in, and signed on behalf of the Company by the officers specified in, Section 5(d) hereof, except that the references in such certificate to the Closing Date shall be changed to refer to such Option Closing Date.

(4)                                 Bring-down Comfort Letters.  A letter from each of the Accountants, each in form and substance satisfactory to the Representative and dated as of such Option Closing Date, substantially in the same form and substance as the letter furnished by each to the Representative pursuant to Section 5(f) hereof, except that the specified date in the letter furnished pursuant to this paragraph shall be a date not more than three business days prior to such Option Closing Date, and except that such letter shall also cover any amendments or supplements to the Registration Statement, any Issuer Free Writing Prospectus (other than any electronic road show) and the Prospectus subsequent to the Closing Date.

(5)                                 Bring-down Reserve Engineers’ Comfort Letters.  A letter from each of the Reserve Engineers, each in form and substance satisfactory to the Representative and dated as of such Option Closing Date, to the effect that they reaffirm the statements made in the letter delivered by each pursuant to Section 5(h) hereof.

(l)             Additional Documents.  At the Closing Date and each Option Closing Date, counsel for the Underwriters shall have been furnished with such documents and opinions as they may require for the purpose of enabling them to pass upon the issuance and sale of the Securities as herein contemplated, or in order to evidence the accuracy of any of the representations or warranties, or the fulfillment of any of the conditions, contained in this Agreement, or as the Representative or counsel for the Underwriters may otherwise reasonably request; and all proceedings taken by the Company in connection with the issuance and sale of the Securities as herein contemplated and in connection with the other transactions contemplated by this Agreement shall be satisfactory in form and substance to the Representative.

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(m)     Termination of Agreement.  If any condition specified in this Section 5 shall not have been fulfilled when and as required to be fulfilled, this Agreement, or, in the case of any condition to the purchase of Option Securities on an Option Closing Date that is after the Closing Date, the obligations of the several Underwriters to purchase the relevant Option Securities on such Option Closing Date, may be terminated by the Representative by notice to the Company at any time on or prior to Closing Date or such Option Closing Date, as the case may be, and such termination shall be without liability of any party to any other party except as provided in Section 4 hereof and except that, in the case of any such termination of this Agreement, Sections 1, 6, 7, 8, 11, 12, 13, 14, 15, 17, 18, 19, 20 and 21 hereof shall survive such termination of this Agreement and remain in full force and effect.

SECTION 6.  Indemnification.

(a)                                 Indemnification by the Company.  The Company agrees to indemnify and hold harmless each Underwriter, its affiliates, and its and their officers, directors, employees, selling agents, partners and members and each person, if any, who controls any Underwriter within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act as follows:

(i)             against any and all loss, liability, claim, damage and expense whatsoever, as incurred, arising out of any untrue statement or alleged untrue statement of a material fact contained in the Registration Statement (or any amendment thereto), or the omission or alleged omission therefrom of a material fact required to be stated therein or necessary to make the statements therein not misleading, or arising out of any untrue statement or alleged untrue statement of a material fact included in any preliminary prospectus, any Issuer Free Writing Prospectus, the General Disclosure Package or the Prospectus (or any amendment or supplement to any of the foregoing), or any “issuer information” (as defined in Rule 433), or any “road show” (as defined in Rule 433) that does not constitute an Issuer Free Writing Prospectus, or the omission or alleged omission therefrom of a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading;

(ii)          against any and all loss, liability, claim, damage and expense whatsoever, as incurred, to the extent of the aggregate amount paid in settlement of any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or of any claim whatsoever based upon any such untrue statement or omission, or any such alleged untrue statement or omission; provided that (subject to Section 6(d) below) any such settlement is effected with the written consent of the Company; and

(iii)       against any and all expense whatsoever, as incurred (including the fees and disbursements of counsel selected by the Representative in accordance with the terms of this Agreement), reasonably incurred in investigating, preparing for or defending against any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or any claim whatsoever based upon any such untrue statement or omission, or any such alleged untrue statement or omission, to the extent that any such expense is not paid under (i) or (ii) above;

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provided, however, that this indemnity agreement shall not apply to any loss, liability, claim, damage or expense to the extent arising out of any untrue statement or omission or alleged untrue statement or omission made in reliance upon and in conformity with written information furnished to the Company by any Underwriter through the Representative expressly for use in the Registration Statement (or any amendment thereto), or in any preliminary prospectus, any Issuer Free Writing Prospectus, the General Disclosure Package or the Prospectus (or in any amendment or supplement to any of the foregoing), it being understood and agreed that the only such information furnished by the Underwriters as aforesaid consists of the information described as such in Section 6(b) hereof.

(b)                                 Indemnification by the Underwriters.  Each Underwriter agrees, severally and not jointly, to indemnify and hold harmless the Company, each of its directors, each of its officers who signed the Registration Statement and each person, if any, who controls the Company within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act against any and all loss, liability, claim, damage and expense described in the indemnity contained in Section 6(a) hereof, as incurred, but only with respect to untrue statements or omissions, or alleged untrue statements or omissions, made in the Registration Statement (or any amendment thereto), or in any preliminary prospectus, any Issuer Free Writing Prospectus, the General Disclosure Package or the Prospectus (or any amendment or supplement to any of the foregoing), or any “road show” (as defined in Rule 433) that does not constitute an Issuer Free Writing Prospectus, in reliance upon and in conformity with written information furnished to the Company by such Underwriter through the Representative expressly for use therein.  The Company hereby acknowledges and agrees that the information furnished to the Company by the Underwriters through the Representative expressly for use in the Registration Statement (or any amendment thereto), or in any preliminary prospectus, any Issuer Free Writing Prospectus, the General Disclosure Package or the Prospectus (or any amendment or supplement to any of the foregoing), or any “road show” (as defined in Rule 433) that does not constitute an Issuer Free Writing Prospectus, consists exclusively of the following information appearing under the caption “Underwriting” in the Pre-Pricing Prospectus and the Prospectus: (i) the information regarding the concession and reallowance appearing in the fifth paragraph under such caption; and (ii) the information regarding stabilization, syndicate covering transactions and penalty bids appearing in the tenth paragraphs under such caption (but only insofar as such information concerns the Underwriters).

(c)                                  Actions Against Parties; Notification.  Each indemnified party shall give notice as promptly as reasonably practicable to each indemnifying party of any action commenced against it in respect of which indemnity may be sought hereunder, but failure to so notify an indemnifying party shall not relieve such indemnifying party from any liability hereunder to the extent it is not materially prejudiced as a proximate result of such failure. Counsel to the indemnified parties shall be selected as follows: counsel to the Underwriters and the other indemnified parties referred to in Section 6(a) above shall be selected by Wells Fargo, and counsel to the Company, its directors, each of its officers who signed the Registration Statement and each person, if any, who controls the Company within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act shall be selected by the Company.  An indemnifying party may participate at its own expense in the defense of any such action; provided, however, that counsel to the indemnifying party shall not (except with the consent of the indemnified party) also be counsel to the indemnified party.  In no event shall the indemnifying party be liable for

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the fees and expenses of more than one counsel (in addition to any local counsel) separate from their own counsel for the Underwriters and the other indemnified parties referred to in Section 6(a) above and the fees and expenses of more than one counsel (in addition to any local counsel) separate from their own counsel for the Company, its directors, each of its officers who signed the Registration Statement and each person, if any, who controls the Company within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act, in each case in connection with any one action or separate but similar or related actions in the same jurisdiction arising out of the same general allegations or circumstances.  No indemnifying party shall, without the prior written consent of the indemnified parties, settle or compromise or consent to the entry of any judgment with respect to any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or any claim whatsoever in respect of which indemnification or contribution could be sought under this Section 6 or Section 7 hereof (whether or not the indemnified parties are actual or potential parties thereto), unless such settlement, compromise or consent (i) includes an unconditional release of each indemnified party from all liability arising out of such litigation, investigation, proceeding or claim and (ii) does not include a statement as to or an admission of fault, culpability or a failure to act by or on behalf of any indemnified party.

(d)                                 Settlement Without Consent if Failure to Reimburse.  If at any time an indemnified party shall have requested an indemnifying party to reimburse the indemnified party for fees and expenses of counsel as contemplated by this Section 6, such indemnifying party agrees that it shall be liable for any settlement of the nature contemplated by Section 6(a)(ii) effected without its written consent if (i) such settlement is entered into more than 45 days after receipt by such indemnifying party of the aforesaid request, (ii) such indemnifying party shall have received notice of the terms of such settlement at least 30 days prior to such settlement being entered into and (iii) such indemnifying party shall not have reimbursed such indemnified party in accordance with such request prior to the date of such settlement.

SECTION 7.  Contribution.  If the indemnification provided for in Section 6 hereof is for any reason unavailable to or insufficient to hold harmless an indemnified party in respect of any losses, liabilities, claims, damages or expenses referred to therein, then each indemnifying party shall contribute to the aggregate amount of such losses, liabilities, claims, damages and expenses incurred by such indemnified party, as incurred, (i) in such proportion as is appropriate to reflect the relative benefits received by the Company on the one hand and the Underwriters on the other hand from the offering of the Securities pursuant to this Agreement or (ii) if the allocation provided by clause (i) is not permitted by applicable law, in such proportion as is appropriate to reflect not only the relative benefits referred to in clause (i) above but also the relative fault of the Company on the one hand and of the Underwriters on the other hand in connection with the statements or omissions which resulted in such losses, liabilities, claims, damages or expenses, as well as any other relevant equitable considerations.

The relative benefits received by the Company on the one hand and the Underwriters on the other hand in connection with the offering of the Securities pursuant to this Agreement shall be deemed to be in the same respective proportions as the total net proceeds from the offering of the Securities pursuant to this Agreement (before deducting expenses) received by the Company and the total underwriting discounts and commissions received by the Underwriters, in each case

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as set forth on the cover of the Prospectus, bear to the aggregate public offering price of the Securities as set forth on such cover.

The relative fault of the Company on the one hand and the Underwriters on the other hand shall be determined by reference to, among other things, whether any such untrue or alleged untrue statement of a material fact or omission or alleged omission to state a material fact relates to information supplied by the Company on the one hand or by the Underwriters on the other hand and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission.

The Company and the Underwriters agree that it would not be just and equitable if contribution pursuant to this Section 7 were determined by pro rata allocation (even if the Underwriters were treated as one entity for such purpose) or by any other method of allocation that does not take account of the equitable considerations referred to above in this Section 7.  The aggregate amount of losses, liabilities, claims, damages and expenses incurred by an indemnified party and referred to above in this Section 7 shall be deemed to include any legal or other expenses reasonably incurred by such indemnified party in investigating, preparing for or defending against any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or any claim whatsoever based upon any such untrue or alleged untrue statement or omission or alleged omission.

Notwithstanding the provisions of this Section 7, no Underwriter shall be required to contribute any amount in excess of the amount by which the total price at which the Securities underwritten by it and distributed to the public were offered to the public exceeds the amount of any damages which such Underwriter has otherwise been required to pay by reason of any such untrue or alleged untrue statement or omission or alleged omission.

No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the 1933 Act) shall be entitled to contribution from any person or entity who was not guilty of such fraudulent misrepresentation.

For purposes of this Section 7, each affiliate of any Underwriter, each officer, director, employee, selling agent, partner and member of any Underwriter or any such affiliate, and each person, if any, who controls any Underwriter within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act shall have the same rights to contribution as such Underwriter, and each director of the Company, each officer of the Company who signed the Registration Statement, and each person, if any, who controls the Company within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act shall have the same rights to contribution as the Company.  The Underwriters’ respective obligations to contribute pursuant to this Section 7 are several in proportion to the number of Initial Securities set forth opposite their respective names in Exhibit A hereto and not joint.

SECTION 8.  Representations, Warranties and Agreements to Survive Delivery.  All representations, warranties and agreements contained in this Agreement or in certificates signed by any officer of the Company or any of its subsidiaries (whether signed on behalf of such officer, the Company or such subsidiary) and delivered to the Representative or counsel to the Underwriters shall remain operative and in full force and effect, regardless of any investigation

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made by or on behalf of any Underwriter, any officer, director, employee, partner, member or agent of any Underwriter or any person or entity controlling any Underwriter, or by or on behalf of the Company, any officer, director or employee of the Company or any person or entity controlling the Company, and shall survive delivery of and payment for the Securities.

SECTION 9.  Termination of Agreement.

(a)                                 Termination; General.  The Representative may terminate this Agreement, by notice to the Company, at any time on or prior to the Closing Date (and, if any Option Securities are to be purchased on an Option Closing Date that occurs after the Closing Date, the Representative may terminate the obligations of the several Underwriters to purchase such Option Securities, by notice to the Company at any time on or prior to such Option Closing Date) (i) if there has been, at any time on or after the date of this Agreement or since the respective dates as of which information is given in the General Disclosure Package or the Prospectus (in each case, exclusive of any amendments or supplements thereto subsequent to the date of this Agreement), any material adverse change or any development that could reasonably be expected to result in a material adverse change, in the condition (financial or other), results of operations, business, properties, management or prospects of the Company and its subsidiaries taken as a whole, whether or not arising in the ordinary course of business, or (ii) if there has occurred any material adverse change in the financial markets in the United States or the international financial markets, any declaration of a national emergency or war by the United States, any outbreak of hostilities or escalation thereof or other calamity or crisis or any change or development involving a prospective change in national or international political, financial or economic conditions (including, without limitation, as a result of terrorist activities), in each case the effect of which is such as to make it, in the judgment of the Representative, impracticable or inadvisable to market the Securities or to enforce contracts for the sale of the Securities, or (iii) if (A) trading in any securities of the Company has been suspended or materially limited by the Commission or the NYSE MKT LLC, or (B) trading generally on the NYSE, the Nasdaq Global Select Market, the Nasdaq Global Market or the NYSE MKT LLC has been suspended or limited, or minimum or maximum prices for trading have been fixed, or maximum ranges for prices have been required, by any of said exchanges or by order of the Commission, FINRA or any other governmental authority, or (C) a material disruption has occurred in commercial banking or securities settlement or clearance services in the United States or in Europe, or (iv) if a banking moratorium has been declared by either Federal or New York authorities or (v) if there shall have occurred, at any time on or after the date of this Agreement, any downgrading in the rating of any debt securities of or guaranteed by the Company or any debt securities, preferred stock or trust preferred securities of any subsidiary of the Company by any “nationally recognized statistical rating organization” (as defined in Section 3(a)(62) of the 1934 Act) or any public announcement that any such organization has placed its rating on the Company or any such debt securities or other securities under surveillance or review or on a so-called “watch list” (other than an announcement with positive implications of a possible upgrading, and no implication of a possible downgrading, of such rating) or any announcement by any such organization that the Company or any such debt securities or other securities have been placed on negative outlook.

(b)                                 Liabilities.  If this Agreement is terminated pursuant to this Section 9, such termination shall be without liability of any party to any other party except as provided in

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Section 4 hereof and except that Sections 1, 6, 7, 8, 11, 12, 13, 14, 15, 17, 18, 19, 20 and 21 hereof shall survive such termination and remain in full force and effect.

SECTION 10.  Default by One or More of the Underwriters.  If one or more of the Underwriters shall fail at the Closing Date or an Option Closing Date to purchase the Securities which it or they are obligated to purchase under this Agreement (the “Defaulted Securities”), the Representative shall have the right, within 24 hours thereafter, to make arrangements for one or more of the non-defaulting Underwriters, or any other underwriters, to purchase all, but not less than all, of the Defaulted Securities in such amounts as may be agreed upon and upon the terms herein set forth; if, however, the Representative shall not have completed such arrangements within such 24-hour period, then:

(1)                                 if the number of Defaulted Securities does not exceed 10% of the number of Securities to be purchased on such date, each of the non-defaulting Underwriters shall be obligated, severally and not jointly, to purchase the full amount of such Defaulted Securities in the proportions that their respective underwriting obligations hereunder bear to the underwriting obligations of all non-defaulting Underwriters; or

(2)                                 if the number of Defaulted Securities exceeds 10% of the number of Securities to be purchased on such date, this Agreement or, with respect to any Option Closing Date that occurs after the Closing Date, the obligation of the Underwriters to purchase and of the Company to sell the Option Securities that were to have been purchased and sold on such Option Closing Date, shall terminate without liability on the part of any non-defaulting Underwriter.

No action taken pursuant to this Section 10 shall relieve any defaulting Underwriter from liability in respect of its default.

In the event of any such default that does not result in a termination of this Agreement or, in the case of an Option Closing Date that is after the Closing Date, that does not result in a termination of the obligations of the Underwriters to purchase and the Company to sell the relevant Option Securities, as the case may be, the Representative shall have the right to postpone the Closing Date or the relevant Option Closing Date, as the case may be, for a period not exceeding seven days in order to effect any required changes in the Registration Statement, the General Disclosure Package or Prospectus or in any other documents or arrangements.  As used herein, the term “Underwriter” includes any person substituted for an Underwriter under this Section 10.

SECTION 11.  Notices.  All notices and other communications hereunder shall be in writing, shall be effective only upon receipt and shall be mailed, delivered by hand or overnight courier, or transmitted by fax (with the receipt of such fax to be confirmed by telephone).  Notices to the Underwriters shall be directed to the Representative at Wells Fargo Securities, LLC, 375 Park Avenue, New York, New York  10152, Attention of Equity Syndicate, fax no. 212 ###-###-#### (with such fax to be confirmed by telephone to ###-###-####); and notices to the Company shall be directed to it at Triangle Petroleum Company, 1200 17th Street, Suite 2600, Denver, Colorado  80202, Attention of Chief Financial Officer, fax no. 303 ###-###-#### (with such fax to be confirmed by telephone to ###-###-####).

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SECTION 12.  Parties.  This Agreement shall inure to the benefit of and be binding upon each of the Underwriters, the Company and their respective successors.  Nothing expressed or mentioned in this Agreement is intended or shall be construed to give any person, firm or corporation, other than the Underwriters, the Company and their respective successors and the controlling persons and other indemnified parties referred to in Sections 6 and 7 and their successors, heirs and legal representatives, any legal or equitable right, remedy or claim under or in respect of this Agreement or any provision herein contained.  This Agreement and all conditions and provisions hereof are intended to be for the sole and exclusive benefit of the Underwriters, the Company and their respective successors, and said controlling persons and other indemnified parties and their successors, heirs and legal representatives, and for the benefit of no other person or entity.  No purchaser of Securities from any Underwriter shall be deemed to be a successor by reason merely of such purchase.

SECTION 13.  GOVERNING LAW AND TIME.  THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.  EXCEPT AS OTHERWISE EXPRESSLY SET FORTH HEREIN, SPECIFIED TIMES OF DAY REFER TO NEW YORK CITY TIME.

SECTION 14.  Effect of Headings; Counterparts.  The Section and Exhibit headings herein are for convenience only and shall not affect the construction hereof. This Agreement may be executed by any one or more of the parties hereto in any number of counterparts, each of which shall be deemed to be an original, but all such respective counterparts shall together constitute one and the same instrument.

SECTION 15.  Definitions.  As used in this Agreement, the following terms have the respective meanings set forth below:

“Applicable Time” means 6:20 p.m. (New York City time) on August 8, 2013 or such other time as agreed by the Company and the Representative.

“Commission” means the Securities and Exchange Commission.

“Company Documents” means (i) all Subject Instruments and (ii) all other contracts, indentures, mortgages, deeds of trust, loan or credit agreements, bonds, notes, debentures, evidences of indebtedness, swap agreements, hedging agreements, leases or other instruments or agreements to which the Company or any of its subsidiaries is a party or by which the Company or any of its subsidiaries is bound or to which any of the property or assets of the Company or any of its subsidiaries is subject that, solely in the case of this clause (ii), are material with respect to the Company and its subsidiaries taken as a whole.

“DTC” means The Depository Trust Company.

“EDGAR” means the Commission’s Electronic Data Gathering, Analysis and Retrieval System.

“ERISA” means the Employee Retirement Income Security Act of 1974, as amended, and the regulations and published interpretations thereunder.

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“Existing Convertible Notes” means any convertible notes or other convertible debt securities of the Company outstanding on the date of this Agreement.

“Existing Credit Agreements” means (i) the Amended and Restated Credit Agreement, dated as of April 11, 2013, among TUSA, Wells Fargo Bank, National Association, as agent, and the other parties thereto, as amended by Amendment No. 1 thereto, dated as of July 30, 2013, and (ii) the Credit and Security Agreement, dated as of February 25, 2013, by and between RockPile Energy Services, LLC, a Delaware limited liability company and wholly owned subsidiary of the Company, and Wells Fargo Bank, National Association, as lender, each as amended, supplemented or restated, if applicable, and in each case including any promissory notes, pledge agreements, security agreements, mortgages, guarantees and other instruments or agreements entered into by the Company or any of its subsidiaries in connection therewith or pursuant thereto, in each case as amended, supplemented or restated, if applicable.

“Existing Note Purchase Agreement” means the Note Purchase Agreement, dated as of July 31, 2012, between the Company and NGP Triangle Holdings, LLC, a Delaware limited liability company, as purchaser, as amended or supplemented, if applicable, and including any debt securities, pledge agreements, security agreements, mortgages, guarantees or other instruments or agreements entered into by the Company or any of its subsidiaries in connection therewith or pursuant thereto, in each case as amended or supplemented, if applicable.

“Existing Warrants” means any warrants to purchase Common Stock outstanding on the date of this Agreement.

“FCPA” means the Foreign Corrupt Practices Act of 1977, as amended, and the rules and regulations thereunder.

“FINRA” means the Financial Industry Regulatory Authority Inc. or the National Association of Securities Dealers, Inc., or both, as the context shall require.

“GAAP” means generally accepted accounting principles.

“Initial Registration Statement” means the Company’s registration statement on Form S-3 (Registration No. 333-171958), as amended (if applicable), including the exhibits thereto and all documents incorporated or deemed to be incorporated by reference therein pursuant to Item 12 of Form S-3 under the 1933 Act and the Rule 430B Information; provided that any Rule 430B Information shall be deemed to be part of the Initial Registration Statement only from and after the time such information is deemed, pursuant to Rule 430B, to be part of the Initial Registration Statement.

“Issuer Free Writing Prospectus” means any “issuer free writing prospectus,” as defined in Rule 433, relating to the offering of the Securities that (i) is required to be filed with the Commission by the Company, (ii) is a “road show” that is a “written communication” within the meaning of Rule 433(d)(8)(i), whether or not required to be filed with the Commission, or (iii) is exempt from filing pursuant to Rule 433(d)(5)(i) because it contains a description of the Securities or of the offering that does not reflect the final terms, and all free writing prospectuses that are listed in Exhibit H hereto, in each case in the form filed or required to be filed with the

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Commission or, if not required to be filed, in the form retained in the Company’s records pursuant to Rule 433(g).

“Issuer General Use Free Writing Prospectus” means any Issuer Free Writing Prospectus that is intended for general distribution to prospective investors, as evidenced by its being specified in Exhibit H hereto.

“Issuer Limited Use Free Writing Prospectus” means any Issuer Free Writing Prospectus that is not an Issuer General Use Free Writing Prospectus.

“Lien” means any security interest, mortgage, pledge, lien, encumbrance, claim or equity.

“Lock-Up Period” means the period beginning on and including the date of this Agreement through and including the date that is the 90th day after the date of this Agreement.

“OFAC” means the Office of Foreign Assets Control of the U.S. Treasury Department.

“Organizational Documents” means (a) in the case of a corporation, its charter and by-laws, (b) in the case of a limited or general partnership, its partnership certificate, certificate of formation or similar organizational document and its partnership agreement, (c) in the case of a limited liability company, its articles of organization, certificate of formation or similar organizational documents and its operating agreement, limited liability company agreement, membership agreement or other similar agreement, (d) in the case of a trust, its certificate of trust, certificate of formation or similar organizational document and its trust agreement or other similar agreement, and (e) in the case of any other entity, the organizational and governing documents of such entity.

“Pre-Pricing Prospectus” means the preliminary prospectus dated August 6, 2013 relating to the Securities in the form first furnished to the Underwriters for use in connection with the offering of the Securities, including the documents incorporated by reference therein pursuant to Item 12 of Form S-1 under the 1933 Act.

“PCAOB” means the Public Company Accounting Oversight Board (United States).

“preliminary prospectus” means any prospectus together with, if applicable, the accompanying prospectus supplement used in connection with the offering of the Securities that omitted the public offering price of the Securities or that was captioned “Subject to Completion,” together with the documents incorporated or deemed to be incorporated by reference therein pursuant to Item 12 of Form S-3 under the 1933 Act.  The term “preliminary prospectus” includes, without limitation, the Pre-Pricing Prospectus.

“Registration Statement” means the Initial Registration Statement; provided that, if a Rule 462(b) Registration Statement is filed with the Commission, then the term “Registration Statement” shall include such Rule 462(b) Registration Statement from and after the time of such filing, mutatis mutandis.

“Regulation S-T” means Regulation S-T of the Commission.

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“Repayment Event” means any event or condition which, either immediately or with notice or passage of time or both, (i) gives the holder of any bond, note, debenture or other evidence of indebtedness (or any person acting on such holder’s behalf) the right to require the repurchase, redemption or repayment of all or a portion of such indebtedness by the Company or any subsidiary of the Company, or (ii) gives any counterparty (or any person acting on such counterparty’s behalf) under any swap agreement, hedging agreement or similar agreement or instrument to which the Company or any subsidiary of the Company is a party the right to liquidate or accelerate the payment obligations, or designate an early termination date under such agreement or instrument, as the case may be.

“Rule 139,” “Rule 164,” “Rule 172,” “Rule 173,” “Rule 175(b),” “Rule 405,” “Rule 424(b),” “Rule 430B,” “Rule 433” and “Rule 462(b)” refer to such rules under the 1933 Act.

“Rule 430B Information” means the information included in any preliminary prospectus or the Prospectus or any amendment or supplement to any of the foregoing filed pursuant to Rule 424(b)(2) or (b)(5) that was omitted from the Initial Registration Statement at the time it first became effective but is deemed to be part of and included in the Initial Registration Statement pursuant to Rule 430B.

“Rule 462(b) Registration Statement” means a registration statement filed by the Company pursuant to Rule 462(b) for the purpose of registering any of the Securities under the 1933 Act, including the documents and other information incorporated or deemed to be incorporated by reference therein and the Rule 430B Information.

“Sarbanes-Oxley Act” means the Sarbanes-Oxley Act of 2002 and the rules and regulations promulgated thereunder or implementing the provisions thereof.

“Subject Instruments” means the Existing Credit Agreements, the Existing Convertible Notes, the Existing Warrants, the Existing Note Purchase Agreement and all other instruments, agreements and documents filed or incorporated by reference as exhibits to the Registration Statement pursuant to Rule 601(b)(10) of Regulation S-K of the Commission; provided that if any instrument, agreement or other document filed or incorporated by reference as an exhibit to the Registration Statement as aforesaid has been redacted or if any portion thereof has been deleted or is otherwise not included as part of such exhibit (whether pursuant to a request for confidential treatment or otherwise), the term “Subject Instruments” shall nonetheless mean such instrument, agreement or other document, as the case may be, in its entirety, including any portions thereof which shall have been so redacted, deleted or otherwise not filed.

“Termination Event” means any event or condition which gives any person the right, either immediately or with notice or passage of time or both, to terminate or limit (in whole or in part) any Company Documents or any rights of the Company or any of its subsidiaries thereunder, including, without limitation, upon the occurrence of a change of control of the Company or other similar events.

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

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“1933 Act Regulations” means the rules and regulations of the Commission under the 1933 Act.

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

“1934 Act Regulations” means the rules and regulations of the Commission under the 1934 Act.

“1940 Act” means the Investment Company Act of 1940, as amended.

All references in this Agreement to the Registration Statement, the Initial Registration Statement, any Rule 462(b) Registration Statement, any preliminary prospectus, the Prospectus, any Issuer Free Writing Prospectus or any amendment or supplement to any of the foregoing shall be deemed to include the version thereof filed with the Commission pursuant to EDGAR and all versions thereof delivered (physically or electronically) to the Representative or the Underwriters.

All references in this Agreement to financial statements and schedules and other information which is “contained,” “included” or “stated” in the Registration Statement, Initial Registration Statement, any Rule 462(b) Registration Statement, any preliminary prospectus or the Prospectus (and all other references of like import) shall be deemed to mean and include all such financial statements and schedules and other information which is incorporated by reference in or otherwise deemed by 1933 Act Regulations to be a part of or included in the Registration Statement, the Initial Registration Statement, any Rule 462(b) Registration Statement, any preliminary prospectus or the Prospectus, as the case may be; and all references in this Agreement to amendments or supplements to the Initial Registration Statement, any preliminary prospectus or the Prospectus shall be deemed to mean and include the filing of any document under the 1934 Act which is incorporated by reference in or otherwise deemed by 1933 Act Regulations to be a part of or included in the Registration Statement, the Initial Registration Statement, any Rule 462(b) Registration Statement, such preliminary prospectus or the Prospectus, as the case may be.

SECTION 16.  Permitted Free Writing Prospectuses.  The Company represents, warrants and agrees that it has not made and, unless it obtains the prior written consent of the Representative, it will not make, any offer relating to the Securities that constitutes or would constitute an “issuer free writing prospectus” (as defined in Rule 433) or that otherwise constitutes or would constitute a “free writing prospectus” (as defined in Rule 405) or portion thereof required to be filed with the Commission or required to be retained by the Company pursuant to Rule 433; provided that the prior written consent of the Representative shall be deemed to have been given in respect of the Issuer General Use Free Writing Prospectuses, if any, listed on Exhibit H hereto and, to any electronic road show in the form previously provided by the Company to and approved by the Representative.  Any such free writing prospectus consented to or deemed to have been consented to as aforesaid is hereinafter referred to as a “Permitted Free Writing Prospectus.”  The Company represents, warrants and agrees that it has treated and will treat each Permitted Free Writing Prospectus as an “issuer free writing prospectus,” as defined in Rule 433, and has complied and will comply with the requirements of Rule 433 applicable to any Permitted Free Writing Prospectus, including timely filing with the

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Commission where required, legending and record keeping. For the purposes of clarity, the parties hereto agree that all free writing prospectuses, if any, listed in Exhibit H hereto are Permitted Free Writing Prospectuses.

SECTION 17.  Absence of Fiduciary Relationship.  The Company acknowledges and agrees that:

(a)                                 each of the Underwriters is acting solely as an underwriter in connection with the sale of the Securities and no fiduciary, advisory or agency relationship between the Company, on the one hand, and any of the Underwriters, on the other hand, has been created in respect of any of the transactions contemplated by this Agreement, irrespective of whether or not any of the Underwriters has advised or is advising the Company on other matters;

(b)                                 the public offering price of the Securities and the price to be paid by the Underwriters for the Securities set forth in this Agreement were established by the Company following discussions and arm’s-length negotiations with the Representative;

(c)                                  it is capable of evaluating and understanding, and understands and accepts, the terms, risks and conditions of the transactions contemplated by this Agreement;

(d)                                 it is aware that the Underwriters and their respective affiliates are engaged in a broad range of transactions which may involve interests that differ from those of the Company and that none of the Underwriters has any obligation to disclose such interests and transactions to the Company by virtue of any fiduciary, advisory or agency relationship or otherwise; and

(e)                                  it waives, to the fullest extent permitted by law, any claims it may have against any of the Underwriters for breach of fiduciary duty or alleged breach of fiduciary duty and agrees that none of the Underwriters shall have any liability (whether direct or indirect, in contract, tort or otherwise) to it in respect of such a fiduciary duty claim or to any person asserting a fiduciary duty claim on its behalf or in right of it or the Company or any stockholders, employees or creditors of the Company.

SECTION 18.  Research Analyst Independence.  The Company acknowledges that the Underwriters’ respective research analysts and research departments are required to be independent from their respective investment banking divisions and are subject to certain regulations and internal policies, and that such Underwriters’ respective research analysts and research departments may hold views and make statements or investment recommendations and/or publish research reports with respect to the Company and/or the offering that differ from the views of their respective investment banking divisions.  The Company hereby waives and releases, to the fullest extent permitted by applicable law, any claims that the Company may have against the Underwriters with respect to any conflict of interest that may arise from the fact that the views expressed by their respective research analysts and research departments may be different from or inconsistent with the views or advice communicated to the Company by such Underwriters’ respective investment banking divisions.  The Company acknowledges that each of the Underwriters is a full service securities firm and as such from time to time, subject to applicable securities laws, may effect transactions for its own account or the account of its

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customers and hold long or short positions in debt or equity securities of the Company and other entities that may be the subject of the transactions contemplated by this Agreement.

SECTION 19.    Trial By Jury.  The Company (on its own behalf and, to the extent permitted by applicable law, on behalf of its stockholders and affiliates) and each of the Underwriters hereby irrevocably waives, to the fullest extent permitted by applicable law, any and all right to trial by jury in any legal proceeding arising out of or relating to this Agreement or the transactions contemplated hereby.

SECTION 20.  Consent to Jurisdiction.  The Company hereby submits to the non-exclusive jurisdiction of any U.S. federal or state court located in the Borough of Manhattan, the City and County of New York in any action, suit or proceeding arising out of or relating to or based upon this Agreement or any of the transactions contemplated hereby, and irrevocably and unconditionally waives any objection to the laying of venue of any such action, suit or proceeding in any such court and agrees not to plead or claim in any such court that any such action, suit or proceeding has been brought in an inconvenient forum.  Service of any process, summons, notice or document by certified mail to the Company at the address set forth in Section 11 hereof shall be effective service of process for any action, suit or other proceeding brought in any such court.

SECTION 21.  Waiver of Immunity.  With respect to any action, suit or proceeding arising out of or relating to or based upon this Agreement or any of the transactions contemplated hereby, the Company irrevocably waives, to the fullest extent permitted by applicable law, all immunity (whether on the basis of sovereignty or otherwise) from jurisdiction, service of process, attachment (both before and after judgment) and execution to which it might otherwise be entitled, and with respect to any such action, suit or proceeding, waives any such immunity in any court of competent jurisdiction, and agrees not to raise or claim or cause to be pleaded any such immunity at or in respect of any such action, suit or proceeding, including, without limitation, any immunity pursuant to the U.S. Foreign Sovereign Immunities Act of 1976, as amended.

[Signature Page Follows]

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If the foregoing is in accordance with your understanding of our agreement, please sign and return to the Company a counterpart hereof, whereupon this instrument, along with all counterparts, will become a binding agreement among the Underwriters and the Company in accordance with its terms.

For itself and as Representative of the Underwriters named in Exhibit A hereto.

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