Exhibit 1.1

Execution Version

TETRA TECHNOLOGIES, INC.

(a Delaware corporation)

19,400,000 Shares of Common Stock

and

Warrants to Purchase 9,700,000 Shares of Common Stock

UNDERWRITING AGREEMENT

Dated: December 9, 2016

TETRA TECHNOLOGIES, INC.

(a Delaware corporation)

19,400,000 Shares of Common Stock

and

Warrants to Purchase 9,700,000 Shares of Common Stock

UNDERWRITING AGREEMENT

December 9, 2016

J.P. Morgan Securities LLC

383 Madison Avenue

New York, New York 10179

As Representative of the several Underwriters

Ladies and Gentlemen:

TETRA Technologies, Inc., a Delaware corporation (the “ Company ”), confirms its agreement with J.P. Morgan Securities LLC (“ J.P. Morgan ”) and each of the other Underwriters named in Schedule A hereto (collectively, the “ Underwriters ,” which term shall also include any underwriter substituted as hereinafter provided in Section 10 hereof), for whom J.P. Morgan is acting as representative (in such capacity, the “ Representative ”), with respect to (i) the sale by the Company and the purchase by the Underwriters, acting severally and not jointly, of the respective numbers of shares of common stock, par value $0.01 per share, of the Company (“ Common Stock ”) set forth in Schedule A hereto (the “ Initial Shares ”) and warrants of the Company to purchase 9,700,000 shares of Common Stock (the “ Initial Warrants ” and together with the Initial Shares the “ Initial Offered Securities ”) and (ii) 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 2,910,000 additional shares of Common Stock (the “ Option Shares ”) and warrants of the Company to purchase 1,455,000 shares of Common Stock (the “ Option Warrants ” and, together with the Option Shares, the “ Option Offered Securities ”). The Initial Shares and the Option Shares are referred to collectively as the “ Shares ,” the Initial Warrants and the Option Warrants are referred to collectively as the “ Warrants ” and the Initial Offered Securities and Option Offered Securities are referred to collectively as the “ Offered Securities .” Each Share is being sold together with a Warrant to purchase one-half of one share of Common Stock at an exercise price of $5.75 per share.

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

As used herein, “ Warrant Shares ” means the shares of Common Stock issuable upon exercise of the Warrants.

The Company has prepared and filed with the Securities and Exchange Commission (the “ Commission ”) a shelf registration statement on Form S-3 (File No. 333-210335) covering the public offering and sale of certain securities, including the Offered Securities, under the Securities Act of 1933,

as amended (the “ 1933 Act ”), and the rules and regulations promulgated thereunder (the “ 1933 Act Regulations ”), which shelf registration statement became effective on April 13, 2016. Such registration statement, as of any time, means such registration statement as amended by any post-effective amendments thereto to such time, including the exhibits and any schedules thereto at such time, the documents incorporated or deemed to be incorporated by reference therein at such time pursuant to Item 12 of Form S-3 under the 1933 Act and the documents otherwise deemed to be a part thereof as of such time pursuant to Rule 430B under the 1933 Act Regulations (“ Rule 430B ”), is referred to herein as the “ Registration Statement ;” provided, however, that the “Registration Statement” without reference to a time means such registration statement as amended by any post-effective amendments thereto as of the time of the first contract of sale for the Offered Securities, which time shall be considered the “new effective date” of such registration statement with respect to the Offered Securities within the meaning of paragraph (f)(2) of Rule 430B, including the exhibits and schedules thereto as of such time, the documents incorporated or deemed incorporated by reference therein at such time pursuant to Item 12 of Form S-3 under the 1933 Act and the documents otherwise deemed to be a part thereof as of such time pursuant to Rule 430B. Each preliminary prospectus used in connection with the offering of the Offered Securities, 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 collectively referred to herein as a “ preliminary prospectus .” Promptly after execution and delivery of this Agreement, the Company will prepare and file a final prospectus relating to the Offered Securities in accordance with the provisions of Rule 424(b) under the 1933 Act Regulations (“ Rule 424(b) ”). The final prospectus, in the form first furnished or made available to the Underwriters for use in connection with the offering of the Offered Securities, 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 collectively referred to herein as the “ Prospectus .” For purposes of this Agreement, all references to the Registration Statement, any preliminary prospectus, the Prospectus or any amendment or supplement to any of the foregoing shall be deemed to include the copy filed with the Commission pursuant to its Electronic Data Gathering, Analysis and Retrieval system (or any successor system) (“ EDGAR ”).

As used in this Agreement:

“ Applicable Time ” means 9:00 A.M., New York City time, on December 9, 2016 or such other time as agreed by the Company and the Representative.

“ General Disclosure Package ” means any Issuer General Use Free Writing Prospectuses issued at or prior to the Applicable Time, the most recent preliminary prospectus (including any documents incorporated therein by reference) that is distributed to investors prior to the Applicable Time and the information included on Schedule B-1 hereto, all considered together.

“ Issuer Free Writing Prospectus ” means any “issuer free writing prospectus,” as defined in Rule 433 of the 1933 Act Regulations (“ Rule 433 ”), including without limitation any “free writing prospectus” (as defined in Rule 405 of the 1933 Act Regulations (“ Rule 405 ”)) relating to the Offered Securities that is (i) required to be filed with the Commission by the Company, (ii) 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) exempt from filing with the Commission pursuant to Rule 433(d)(5)(i) because it contains a description of the Offered Securities or of the offering that does not reflect the final terms, in each case in the form filed or required to be filed with the 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 (other than a “ bona fide electronic road show,” as defined in Rule 433), as evidenced by its being specified in Schedule B-2 hereto.

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“ Issuer Limited Use Free Writing Prospectus ” means any Issuer Free Writing Prospectus that is not an Issuer General Use Free Writing Prospectus, as evidenced by its being specified in Schedule B-3 hereto.

All references in this Agreement to financial statements and schedules and other information which is “contained,” “included” or “stated” (or other references of like import) in the Registration Statement, any preliminary prospectus or the Prospectus shall be deemed to include all such financial statements and schedules and other information incorporated or deemed incorporated by reference in the Registration Statement, any preliminary prospectus or the Prospectus, as the case may be, prior to the execution and delivery of this Agreement; and all references in this Agreement to amendments or supplements to the Registration Statement, any preliminary prospectus or the Prospectus shall be deemed to include the filing of any document under the Securities Exchange Act of 1934, as amended (the “ 1934 Act ”), and the rules and regulations promulgated thereunder, incorporated or deemed to be incorporated by reference in the Registration Statement, such preliminary prospectus or the Prospectus, as the case may be, at or after the execution and delivery of this Agreement.

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, the Applicable Time, the Closing Time (as defined below) and any Date of Delivery (as defined below), and agrees with each Underwriter, as follows:

(i) Registration Statement and Prospectuses . The Company meets the requirements for use of Form S-3 under the 1933 Act. Each of the Registration Statement and any post-effective amendment thereto has become effective under the 1933 Act. No stop order suspending the effectiveness of the Registration Statement or any post-effective amendment thereto has been issued under the 1933 Act, no order preventing or suspending the use of any preliminary prospectus or the Prospectus has been issued and no proceedings for any of those purposes or pursuant to Section 8A of the 1933 Act have been instituted or are pending or, to the Company’s knowledge, contemplated. The Company has complied with each request (if any) from the Commission for additional information.

Each of the Registration Statement and any post-effective amendment thereto, at the time of its effectiveness and at each deemed effective date with respect to the Underwriters pursuant to Rule 430B(f)(2) under the 1933 Act Regulations, complied in all material respects with the requirements of the 1933 Act and the 1933 Act Regulations. Each preliminary prospectus, the Prospectus and any amendment or supplement thereto, at the time each was filed with the Commission, complied in all material respects with the requirements of the 1933 Act Regulations and each preliminary prospectus and the Prospectus delivered to the Underwriters for use in connection with this offering was identical to the electronically transmitted copies thereof filed with the Commission pursuant to EDGAR, except to the extent permitted by Regulation S-T.

The documents incorporated or deemed to be incorporated by reference in the Registration Statement and the Prospectus, when they became effective or at the time 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 rules and regulations of the Commission under the 1934 Act (the “ 1934 Act Regulations ”).

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(ii) Accurate Disclosure . Neither the Registration Statement nor any amendment thereto, at its effective time, at the Closing Time or any Date of Delivery, contained, contains or will contain an untrue statement of a material fact or omitted, omits or will omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading. As of the Applicable Time, neither (A) the General Disclosure Package nor (B) any individual Issuer Limited Use Free Writing Prospectus, when considered together with the General Disclosure Package, included, includes or will include an untrue statement of a material fact or omitted, omits 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. Neither the Prospectus nor any amendment or supplement thereto, as of its issue date, at the time of any filing with the Commission pursuant to Rule 424(b), at the Closing Time or any Date of Delivery, included, includes or will include an untrue statement of a material fact or omitted, omits 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. The documents incorporated or deemed to be incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus, at the time the Registration Statement became effective or when such documents incorporated by reference were filed with the Commission, as the case may be, when read together with the other information in the Registration Statement, the General Disclosure Package or the Prospectus, as the case may be, did not and will not include 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.

The representations and warranties in this subsection shall not apply to statements in or omissions from the Registration Statement (or any amendment thereto), the General Disclosure Package or the Prospectus (or any amendment or supplement thereto) made in reliance upon and in conformity with written information furnished to the Company by any Underwriter through the Representative expressly for use therein. For purposes of this Agreement, the only information so furnished shall be the information in the third, eighth, twelfth, thirteenth and fourteenth paragraphs under the heading “Underwriting (Conflicts of Interest)” in each case contained in each preliminary prospectus and the Prospectus (collectively, the “ Underwriter Information ”).

(iii) Issuer Free Writing Prospectuses . No Issuer Free Writing Prospectus conflicts or will conflict with the information contained in the Registration Statement or the Prospectus, including any document incorporated by reference therein, and any preliminary or other prospectus deemed to be a part thereof that has not been superseded or modified. Any offer that is a written communication relating to the Offered Securities made prior to the initial filing of the Registration Statement by the Company or any person acting on its behalf (within the meaning, for this paragraph only, of Rule 163(c) of the 1933 Act Regulations) has been filed with the Commission in accordance with the exemption provided by Rule 163 under the 1933 Act Regulations (“Rule 163”) and otherwise complied with the requirements of Rule 163, including without limitation the legending requirement, to qualify such offer for the exemption from Section 5(c) of the 1933 Act provided by Rule 163.

(iv) Company Not Ineligible Issuer . At the time of filing the Registration Statement and any post-effective amendment thereto, at the earliest time thereafter that the Company or another offering participant made a bona fide offer (within the meaning of Rule 164(h)(2) of the 1933 Act Regulations) of the Offered Securities and at the date hereof, the Company was not and is not an “ineligible issuer,” as defined in Rule 405, without taking account of any determination by the Commission pursuant to Rule 405 that it is not necessary that the Company be considered an ineligible issuer.

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(v) Independent Accountants . Ernst & Young LLP, which certified the financial statements and supporting schedules included or incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus, is an independent public accountant as required by the 1933 Act, the 1933 Act Regulations, the 1934 Act, the 1934 Act Regulations and the Public Company Accounting Oversight Board, and, to the knowledge of the Company, Ernst & Young LLP is not in violation of the auditor independence requirements of the Sarbanes-Oxley Act of 2002 and the rules and regulations promulgated thereunder (collectively, the “ Sarbanes-Oxley Act ”).

(vi) Financial Statements . The financial statements included or incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus, together with the related schedules and notes, if any, included or incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus, present fairly in all material respects the financial position of the Company and its consolidated subsidiaries at the dates indicated and the statement of operations, stockholders’ equity and cash flows of the Company and its consolidated subsidiaries for the periods specified; said financial statements have been prepared in conformity with U.S. generally accepted accounting principles (“ GAAP ”) applied on a consistent basis throughout the periods involved, except as expressly stated in the related notes thereto. The supporting schedules, if any, present fairly in all material respects in accordance with GAAP the information required to be stated therein. The selected financial data and the summary financial information included or incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus present fairly the information shown therein and have been compiled on a basis consistent with that of the audited financial statements included or incorporated by reference in the Registration Statement. Except as included or incorporated by reference therein, no historical or pro forma financial statements or supporting schedules are required to be included or incorporated by reference in the Registration Statement, the General Disclosure Package or the Prospectus under the 1933 Act or the 1933 Act Regulations. The interactive data in eXtensible Business Reporting Language incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus 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. Except as described in the Registration Statement, the General Disclosure Package or the Prospectus, there are no material off-balance sheet transactions, arrangements, obligations (including contingent obligations), or any other relationships with unconsolidated entities or other persons, that may have a material current or future effect on the Company’s financial condition, changes in financial condition, results of operations, liquidity, capital expenditures, capital resources or significant components of revenue or expenses.

(vii) No Material Adverse Change in Business . Except as otherwise stated therein, since the respective dates as of which information is given in the Registration Statement, the General Disclosure Package or the Prospectus, (A) there has been no material adverse change, or any development that would be reasonably expected to result in a material adverse change, in the condition, financial or otherwise, or in the earnings, business affairs or business prospects of the Company and its subsidiaries taken as a whole, whether or not arising in the ordinary course of business (a “ Material Adverse Effect ”), (B) there have been no transactions entered into by the Company or any of its subsidiaries, other than those in the ordinary course of business, which are material with respect to the Company and its subsidiaries taken as a whole, 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.

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(viii) Good Standing of the Company . The Company has been duly organized and is validly existing as a corporation in good standing under the laws of the State of Delaware and has corporate 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 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 reasonably be expected to result in a Material Adverse Effect.

(ix) Good Standing of Subsidiaries . Each “significant subsidiary” of the Company (as such term is defined in Rule 1-02 of Regulation S-X) (each, a “ Subsidiary ” and, collectively, the “ Subsidiaries ”) has been duly incorporated, organized or formed and is validly existing in good standing under the laws of the jurisdiction of its incorporation, organization or formation, has corporate or similar 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 is duly qualified 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 to so qualify or to be in good standing would not reasonably be expected to 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 equity interests of each Subsidiary has been duly authorized and validly issued, is fully paid and non-assessable (except as such non-assessability may be limited by the limited partnership, limited liability company, corporation or business entities statute or act, as applicable, of the jurisdiction of formation, organization or incorporation, as applicable, of such subsidiary), and the Company owns, directly or through subsidiaries, the equity interests of the Subsidiaries free and clear of any security interest, mortgage, pledge, lien, encumbrance, claim or equity, other than such existing pursuant to (i) the Credit Agreement, dated as of August 4, 2014, among Compressco Partners, L.P., Compressco Partners Sub, Inc., Bank of America, N.A., as administrative agent, and the other lenders and parties thereto, as amended and (ii) the Note Purchase Agreement, dated as of November 5, 2015, by and between the Company and GSO Tetra Holdings LP (collectively, the “ Credit Agreements ”). None of the outstanding equity interests of any Subsidiary were issued in violation of the preemptive or similar rights of any securityholder of such Subsidiary. The only subsidiaries of the Company are the subsidiaries listed on Exhibit 21 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2015 and those subsidiaries that, collectively, do not constitute a “significant subsidiary” as defined in Rule 1-02 of Regulation S-X.

(x) Capitalization . The authorized, issued and outstanding shares of capital stock of the Company are as set forth in the Registration Statement, the General Disclosure Package and the Prospectus in the column entitled “Actual” under the caption “Capitalization” (except for subsequent issuances, if any, pursuant to this Agreement, pursuant to reservations, agreements or employee benefit plans referred to in the Registration Statement, the General Disclosure Package and the Prospectus or pursuant to the exercise of convertible securities or options referred to in the Registration Statement, the General Disclosure Package and the Prospectus).

(xi) Authorization of Agreement . The Company has full corporate power and authority to (a) enter into this Agreement and to consummate the transactions contemplated under this Agreement, and (b) authorize, execute, issue and deliver the Offered Securities contemplated by this Agreement. This Agreement has been duly authorized, executed and delivered by the Company.

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(xii) Authorization and Description of the Offered Securities . The Shares to be purchased by the Underwriters from the Company 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 and fully paid and non-assessable; and the issuance of the Shares is not subject to the preemptive or other similar rights of any securityholder of the Company. The Warrants to be purchased by the Underwriters from the Company 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 and fully paid and non-assessable; and the issuance of the Warrants is not subject to the preemptive or other similar rights of any securityholder of the Company. The Warrant Shares have been duly authorized and validly reserved for issuance and when issued and delivered upon exercise of the Warrants in accordance therewith, will be validly issued and fully paid and non-assessable; and the issuance of the Warrant Shares is not subject to the preemptive or other similar rights of any securityholder of the Company. The Offered Securities and Warrant Shares conform in all material respects to all statements relating thereto contained or incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus and such description conforms in all material respects to the rights set forth in the instruments defining the same. No holder of Offered Securities will be subject to personal liability by reason of being such a holder.

(xiii) Registration Rights . There are no persons with registration rights or other similar rights to have any securities registered for sale pursuant to the Registration Statement or otherwise registered for sale or sold by the Company under the 1933 Act pursuant to this Agreement.

(xiv) Absence of Violations, Defaults and Conflicts . Neither the Company nor any of its subsidiaries is (A) in violation of its charter, by-laws or similar organizational document, (B) in default in the performance or observance of any obligation, agreement, covenant or condition contained in any contract, indenture, mortgage, deed of trust, loan or credit agreement, note, lease or other agreement or instrument to which the Company or any of its subsidiaries is a party or by which it or any of them may be bound or to which any of the properties or assets of the Company or any subsidiary is subject (collectively, “ Agreements and Instruments ”), except for such defaults that would not, individually or in the aggregate, reasonably be expected to result in a Material Adverse Effect, or (C) in violation of any law, statute, rule, regulation, judgment, order, writ or decree of any arbitrator, court, governmental body, regulatory body, administrative agency or other authority, body or agency having jurisdiction over the Company or any of its subsidiaries or any of their respective properties, assets or operations (each, a “ Governmental Entity ”), except for such violations that would not, individually or in the aggregate, reasonably be expected to result in a Material Adverse Effect. The execution, delivery and performance of this Agreement and any other agreement or instrument entered into or issued or to be entered into or issued by the Company in connection with the transactions contemplated hereby or the consummation of the transactions contemplated herein and in the Registration Statement, the General Disclosure Package and the Prospectus (including the offering, issuance and sale of the Offered Securities pursuant to this Agreement and the use of the proceeds from the sale of the Offered Securities as described in the Registration Statement, the General Disclosure Package and the Prospectus under the caption “Use of Proceeds”) and compliance by the Company with its obligations hereunder have been duly authorized by all necessary corporate action and do not and will not, whether with

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or without the giving of notice or passage of time or both, conflict with or constitute a breach of, or default or Repayment Event (as defined below) under, or result in the creation or imposition of any lien, charge or encumbrance upon any properties or assets of the Company or any subsidiary pursuant to, the Agreements and Instruments (except for such conflicts, breaches, defaults or Repayment Events or liens, charges or encumbrances that would not, individually or in the aggregate, reasonably be expected to result in a Material Adverse Effect), nor will such action result in any violation of the provisions of the charter, by-laws or similar organizational document of the Company or any of its subsidiaries or any law, statute, rule, regulation, judgment, order, writ or decree of any Governmental Entity. As used herein, a “Repayment Event” means any event or condition which gives the holder of any 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 of its subsidiaries.

(xv) 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 or any subsidiary’s principal suppliers, manufacturers, customers or contractors, which, in either case, would reasonably be expected to result in a Material Adverse Effect.

(xvi) Absence of Proceedings . Except as disclosed in the Registration Statement, the General Disclosure Package and the Prospectus, there is no action, suit, proceeding, inquiry, audit, review or investigation before or brought by any Governmental Entity now pending or, to the knowledge of the Company, threatened, against or affecting the Company or any of its subsidiaries, or, to the knowledge of the Company, otherwise involving the Company or any of its subsidiaries, which is required to be disclosed in the Registration Statement, the General Disclosure Package and the Prospectus (other than as disclosed therein) or which would reasonably be expected to result in a Material Adverse Effect, or which would be reasonably expected to materially and adversely affect the consummation of the transactions contemplated in this Agreement or the performance by the Company of its obligations hereunder; and the aggregate of all pending legal or governmental proceedings to which the Company or any such subsidiary is a party or of which any of their respective properties or assets is the subject which are not described in the Registration Statement, the General Disclosure Package and the Prospectus, including ordinary routine litigation incidental to the business, would not be reasonably expected to result in a Material Adverse Effect.

(xvii) Accuracy of Descriptions and Exhibits . There are no contracts or documents which are required to be described in the Registration Statement, the General Disclosure Package or the Prospectus or the documents incorporated therein by reference or to be filed as exhibits thereto which have not been so described and filed as required.

(xviii) Absence of Further Requirements . No filing with, or authorization, approval, consent, license, order, registration, qualification or decree of, any Governmental Entity is necessary or required for the performance by the Company of its obligations hereunder, in connection with the offering, issuance or sale of the Offered Securities and the Warrant Shares hereunder, the consummation of the transactions contemplated by this Agreement or for the due execution, delivery and performance of this Agreement, in each case on the terms contemplated by the Registration Statement, the General Disclosure Package and the Prospectus, except as expressly contemplated by this Agreement or such as have been already obtained or as may be required under the 1933 Act, the 1933 Act Regulations, the rules of the New York Stock Exchange, state securities laws or the rules of Financial Industry Regulatory Authority, Inc. (“ FINRA ”).

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(xix) 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 Governmental Entities necessary to conduct the business now operated by them, except where the failure so to possess would not, individually or in the aggregate, reasonably be expected to result in a Material Adverse Effect. The Company and its subsidiaries are in compliance with the terms and conditions of all Governmental Licenses, except where the failure so to comply would not, individually or in the aggregate, reasonably be expected to result in a Material Adverse Effect. All of the Governmental Licenses are valid and in full force and effect, except when the invalidity of such Governmental Licenses or the failure of such Governmental Licenses to be in full force and effect would not, individually or in the aggregate, reasonably be expected to 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 Governmental Licenses which, individually or in the aggregate, if the subject of an unfavorable decision, ruling or finding, would reasonably be expected to result in a Material Adverse Effect.

(xx) Title to Property . The Company and its subsidiaries have indefeasable title to all real property owned by them and good title to all other properties owned by them, in each case, free and clear of all mortgages, pledges, liens, security interests, claims, restrictions or encumbrances of any kind except such as (A) are described in the Registration Statement, the General Disclosure Package and the Prospectus, (B) arise under the Credit Agreements or (C) would not, individually or in the aggregate, materially and adversely affect the value of such property and do not interfere with the use made and proposed to be made of such property by the Company or any of its subsidiaries; and all of the leases and subleases material to the business of the Company and its subsidiaries, taken as a whole, and under which the Company or any of its subsidiaries holds properties described in the Registration Statement, the General Disclosure Package or the Prospectus, are in full force and effect.

(xxi) Possession of Intellectual Property . Except for such exceptions that would not reasonably be expected to result in a Material Adverse Effect, 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, and neither the Company nor any of its subsidiaries has received any written notice 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 reasonably be expected to result in a Material Adverse Effect.

(xxii) Environmental Laws . Except as described in the Registration Statement, the General Disclosure Package and the Prospectus or except as would not, individually or in the aggregate, reasonably be expected to 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,

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decree or judgment, relating to pollution or protection of human health, 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, asbestos-containing materials or mold (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, to the knowledge of the Company, threatened administrative, regulatory or judicial actions, suits, demands, demand letters, claims, liens, notices of noncompliance or violation, investigations or proceedings relating to any Environmental Law against the Company or any of its subsidiaries and (D) there are no events or circumstances that would 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 Entity, against or affecting the Company or any of its subsidiaries relating to Hazardous Materials or any Environmental Laws.

(xxiii) Accounting Controls and Disclosure Controls . The Company and, except as described in CSI Compressco LP’s Annual Report on Form 10-K for the fiscal year ended December 31, 2015, each of its subsidiaries maintain effective internal control over financial reporting (as defined under Rule 13a-15 and 15d-15 under the 1934 Act Regulations) and a system of internal accounting controls sufficient to provide reasonable assurances that (A) transactions are executed in accordance with management’s general or specific authorization; (B) transactions are recorded as necessary to permit preparation of financial statements in conformity with GAAP and to maintain accountability for assets; (C) access to assets is permitted only in accordance with management’s general or specific authorization; (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; and (E) the interactive data in eXtensible Business Reporting Language incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus fairly presents the information called for in all material respects and is prepared in accordance with the Commission’s rules and guidelines applicable thereto. Except as described in the Registration Statement, the General Disclosure Package and the Prospectus, since the end of the Company’s most recent audited fiscal year, there has been (1) no material weakness in the Company’s internal control over financial reporting (whether or not remediated) and (2) 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 each of its subsidiaries maintain an effective system of disclosure controls and procedures (as defined in Rule 13a-15 and Rule 15d-15 under the 1934 Act Regulations) that 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 is 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.

(xxiv) 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 in all material respects with any provision of the Sarbanes-Oxley Act and the rules and regulations promulgated in connection therewith, including Section 402 related to loans and Sections 302 and 906 related to certifications.

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(xxv) Payment of Taxes . All United States federal income tax returns of the Company and its subsidiaries required by law to be filed have been filed (or an extension with respect thereto has been obtained), and all taxes shown by such returns or otherwise assessed, which are due and payable, have been paid, except assessments against which appeals have been or will be promptly taken and as to which adequate reserves have been provided. The Company and its subsidiaries have filed (or have obtained an extension with respect thereto) all other tax returns that are required to have been filed by them pursuant to applicable foreign, state, local or other law except insofar as the failure to file such returns would not result in a Material Adverse Effect, and has paid all taxes due pursuant to such returns or pursuant to any assessment received by the Company and its subsidiaries, except for such taxes, if any, as are being contested in good faith and as to which adequate reserves have been established by the Company or which would not have a Material Adverse Effect. The charges, accruals and reserves on the books of the Company in respect of any income and corporation tax liability for any years not finally determined are adequate to meet any assessments or re-assessments for additional income tax for any years not finally determined, except to the extent of any inadequacy that would not reasonably be expected to result in a Material Adverse Effect.

(xxvi) ERISA . Except as otherwise disclosed in the Registration Statement, the General Disclosure Package and the Prospectus or as would not reasonably be expected to result in a Material Adverse Effect, each employee benefit plan, within the meaning of Section 3(3) of the Employee Retirement Income Security Act of 1974, as amended (“ ERISA ”), that is or has been maintained, administered or contributed to by the Company or any member of any group that includes or has included the Company (as determined under Section 414(b), (c), (m), or (o) of the Internal Revenue Code of 1986, as amended (the “ Code ”)) (a “ Company Affiliate ”) for their employees or former employees has been maintained in compliance in all material respects with its terms and the requirements of any applicable statutes, orders, rules and regulations, including but not limited to ERISA and the Code; (i) no prohibited transaction, within the meaning of Section 406 of ERISA or Section 4975 of the Code, has occurred with respect to any such plan, excluding transactions effected pursuant to a statutory or administrative exemption; (ii) for each such plan that is subject to the funding rules of Section 412 of the Code or Section 302 of ERISA, there has not occurred any “accumulated funding deficiency” within the meaning of Section 412 of the Code or Section 302 of ERISA, respectively, whether or not waived, and the fair market value of the assets of each such plan (excluding for these purposes accrued but unpaid contributions) exceeds the present value of all benefits accrued under such plan determined as of the plan’s most recent actuarial report using the actuarial assumptions set forth therein, and such actuarial assumptions are reasonable in the aggregate; (iii) neither the Company nor any Company Affiliate has incurred or is reasonably expected to incur any liability to any “multiemployer plan” within the meaning of Section 3(37) or 4001(a)(3) of ERISA; and (iv) neither the Company nor any Company Affiliate has incurred or is reasonably expected to incur any liability under any “welfare plan” within the meaning of Section 3(1) of ERISA that provides benefits to retired or terminated employees (other than as required by Section 4980B of the Code or Title I, Subtitle B, Part 6 of ERISA).

(xxvii) Insurance . The Company and its subsidiaries carry or are entitled to the benefits of insurance, with reputable insurers, in such amounts and covering such risks as is reasonably adequate to protect them and their businesses, and all such insurance is in full force and effect. The Company has not received written notice from such insurers that the Company will not be able (A) to renew its existing insurance coverage as and when such policies expire or (B) to obtain comparable coverage at reasonable cost from similar institutions as may be necessary or appropriate to conduct its business as now conducted.

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(xxviii) Investment Company Act . The Company is not required, and upon the issuance and sale of the Offered Securities as herein contemplated and the application of the net proceeds therefrom as described in the Registration Statement, the General Disclosure Package and the Prospectus will not be required, to register as an “investment company” under the Investment Company Act of 1940, as amended (the “ 1940 Act ”).

(xxix) Absence of Manipulation . Neither the Company nor any affiliate of the Company has taken, nor will the Company or any affiliate take, directly or indirectly, any action which is designed, or would be expected, to cause or result in, or which constitutes, the stabilization or manipulation of the price of any security of the Company to facilitate the sale or resale of the Offered Securities or to result in a violation of Regulation M under the 1934 Act.

(xxx) No Unlawful Payments . None of the Company or its subsidiaries nor, to the knowledge of the Company, any director, officer, agent, employee or other person associated with or acting on behalf of the Company and its subsidiaries has (i) used any corporate funds for any unlawful contribution, gift, entertainment or other unlawful expense relating to political activity; (ii) made or taken an act in furtherance of an offer, promise or authorization of any direct or indirect unlawful payment or benefit to any foreign or domestic government official or employee, including of any government-owned or controlled entity or of a public international organization, or any person acting in an official capacity for or on behalf of any of the foregoing, or any political party or party official or candidate for political office; (iii) violated or is in violation of any provision of the Foreign Corrupt Practices Act of 1977, as amended, or any applicable law or regulation implementing the OECD Convention on Combating Bribery of Foreign Public Officials in International Business Transactions, or committed an offence under the Bribery Act 2010 of the United Kingdom, or any other applicable anti-bribery or anti-corruption law; or (iv) made, offered, agreed, requested or taken an act in furtherance of any unlawful bribe or other unlawful benefit, including, without limitation, any rebate, payoff, influence payment, kickback or other unlawful or improper payment or benefit. The Company and its subsidiaries have instituted, maintain and enforce, and will continue to maintain and enforce, policies and procedures designed to promote and ensure compliance with all applicable anti-bribery and anti-corruption laws.

(xxxi) Compliance with Money Laundering Laws . The operations of the Company and its subsidiaries are and have been conducted at all times in compliance with applicable financial recordkeeping and reporting requirements, including those of the Currency and Foreign Transactions Reporting Act of 1970, as amended, of the applicable money laundering statutes of all jurisdictions where the Company or any of its subsidiaries conduct business, the rules and regulations thereunder and any related or similar rules, regulations or guidelines, issued, administered or enforced by any governmental agency (collectively, the “ Anti-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 and its subsidiaries with respect to the Anti-Money Laundering Laws is pending or, to the knowledge of the Company, threatened.

(xxxii) No Conflicts with Sanctions Laws . None of the Company or its subsidiaries or, to the knowledge of the Company, any director, officer, agent, employee, affiliate or other person associated with or acting on behalf of the Company and its subsidiaries is currently the subject or the target of any sanctions administered or enforced by the U.S. government (including, without limitation, the Office of Foreign Assets Control of the U.S. Department of the Treasury (“ OFAC ”) or the U.S. Department of State and including, without limitation, the designation as a “specially designated national” or “blocked person”), the United Nations Security Council

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(“ UNSC ”), the European Union, Her Majesty’s Treasury (“ HMT ”), or other relevant sanctions authority (collectively, “ Sanctions ”), nor is the Company or its subsidiaries located, organized or resident in a country or territory that is the subject or target of Sanctions, including, without limitation, Cuba, Iran, North Korea, Sudan, the Crimea region and Syria (each, a “ Sanctioned Country ”); and none of the Company or its subsidiaries will directly or indirectly use the proceeds of the offering of the Offered Securities hereunder, or lend, contribute or otherwise make available such proceeds to any subsidiary, joint venture partner or other person or entity (i) to fund or facilitate any activities of or business with any person that, at the time of such funding or facilitation, is the subject or target of Sanctions, (ii) to fund or facilitate any activities of or business in any Sanctioned Country or (iii) in any other manner that will result in a violation by any person (including any person participating in the transaction, whether as underwriter, initial purchaser, advisor, investor or otherwise) of Sanctions. For the past five years, the Company and its subsidiaries have not knowingly engaged in, and are not now knowingly engaged in, any dealings or transactions with any person that at the time of the dealing or transaction is or was the subject or the target of Sanctions or with any Sanctioned Country.

(xxxiii) Lending Relationship . Except as disclosed in the Registration Statement, the General Disclosure Package and the Prospectus, the Company (i) does not have any material lending or other relationship with any bank or lending affiliate of any Underwriter and (ii) does not intend to use any of the proceeds from the sale of the Offered Securities to repay any outstanding debt owed to any affiliate of any Underwriter.

(xxxiv) Statistical and Market-Related Data . Any statistical and market-related 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 in all material respects and, to the extent required, the Company has obtained the written consent to the use of such data from such sources.

(xxxv) No Broker’s Fee . The Company is not party to any contract, agreement or understanding with any person (other than this Agreement) that would give rise to a valid claim against the Company or the Underwriters for a brokerage commission, finder’s fee or like payment in connection with the offering and sale of the Offered Securities.

(xxxvi) Related Party Transactions . No relationship, direct or indirect, exists between or among the Company or any of its subsidiaries, on the one hand, and the directors, officers, stockholders, customers or suppliers of the Company or any of its subsidiaries, on the other hand, that is required by the 1933 Act to be described in the Registration Statement, the General Disclosure Package or the Prospectus and that is not so described therein.

(xxxvii) Forward-Looking Statements . No forward-looking statement (within the meaning of Section 27A of the 1933 Act and Section 21E of the 1934 Act) contained or incorporated by reference in the Registration Statement, the General Disclosure Package or the Prospectus has been made or reaffirmed without a reasonable basis or has been disclosed other than in good faith.

(xxxviii) FINRA Matters . All of the information provided to the Representative or to counsel for the Underwriters in connection with any letters, filings or other supplemental information provided to FINRA is true complete and correct in all material respects.

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(b) Officer’s Certificates . Any certificate signed by any officer of the Company or any of its subsidiaries 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 Offered 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 each Underwriter, severally and not jointly, and each Underwriter, severally and not jointly, agrees to purchase from the Company, at the price per share set forth in Schedule A , that number of Initial Offered Securities set forth in Schedule A opposite the name of such Underwriter, plus any additional number of Initial Offered Securities which such Underwriter may become obligated to purchase pursuant to the provisions of Section 10 hereof, subject, in each case, to such adjustments among the Underwriters as the Representative in its sole discretion shall make to eliminate any sales or purchases of fractional shares.

(b) Option Offered 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 additional 2,910,000 shares of Common Stock and Warrants to purchase an additional 1,455,000 shares of Common Stock, at the price per share set forth in Schedule A, less an amount per share equal to any dividends or distributions declared by the Company and payable on the Initial Offered Securities but not payable on the Option Offered Securities. The option hereby granted may be exercised for 30 days after the date hereof and may be exercised in whole or in part at any time from time to time upon notice by the Representative to the Company setting forth the number of Option Offered Securities as to which the several Underwriters are then exercising the option and the time and date of payment and delivery for such Option Offered Securities. Any such time and date of delivery (a “ Date of Delivery ”) shall be determined by the Representative, but shall not be later than seven full business days after the exercise of said option, nor in any event prior to the Closing Time. If the option is exercised as to all or any portion of the Option Offered Securities, each of the Underwriters, acting severally and not jointly, will purchase that proportion of the total number of Option Offered Securities then being purchased which the number of Initial Offered Securities set forth in Schedule A opposite the name of such Underwriter bears to the total number of Initial Offered Securities, subject, in each case, to such adjustments as the Representative in its sole discretion shall make to eliminate any sales or purchases of fractional shares.

(c) Payment . Payment of the purchase price for, and delivery of certificates or security entitlements for, the Initial Offered Securities shall be made at the offices of Latham & Watkins LLP at 811 Main Street, Suite 3700, 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 the third (fourth, if the pricing occurs after 4:00 P.M. (New York City time) on any given day) business day after the date hereof (unless postponed in accordance with the provisions of Section 10), or such other time not later than ten 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 “ Closing Time ”).

In addition, in the event that any or all of the Option Offered Securities are purchased by the Underwriters, payment of the purchase price for, and delivery of, such Option Offered Securities shall be made at the above-mentioned offices, or at such other place as shall be agreed upon by the Representative and the Company, on each Day of Delivery 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 bank account designated in writing by the Company against delivery to the Representative for the respective accounts of the Underwriters of the Offered Securities to be purchased by them. It is understood that each

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Underwriter has authorized the Representative, for its account, to accept delivery of, receipt for, and make payment of the purchase price for, the Initial Offered Securities and the Option Offered Securities, if any,which it has agreed to purchase. The Representative, individually and not as representative of the Underwriters, may (but shall not be obligated to) make payment of the purchase price for the Initial Offered Securities or the Option Offered Securities, if any, to be purchased by any Underwriter whose funds have not been received by the Closing Time or the relevant Date of Delivery, as the case may be, but such payment shall not relieve such Underwriter from its obligations hereunder.

(d) Denominations; Registration . The Offered Securities shall be in such denominations and registered in such names as the Representative may request in writing at least one full business day before the Closing Time or the relevant Date of Delivery. The Company will deliver the Offered Securities to the Underwriters through the facilities of the Depository Trust Company (“ DTC ”) (against payment of the purchase price) as provided in the preceding paragraph prior to the Closing Time or the relevant Date of Delivery.

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

(a) Compliance with Securities Regulations and Commission Requests . Prior to the termination of the offering of the Offered Securities, the Company, subject to Section 3(b), will comply with the requirements of Rule 430B or Rule 424, as applicable, and will notify the Representative promptly, and confirm the notice in writing, (i) when any post-effective amendment to the Registration Statement shall become effective or any amendment or supplement to the Prospectus shall have been filed, (ii) of the receipt of any comments from the Commission, (iii) of any request by the Commission for any amendment to the Registration Statement or any amendment or supplement to the Prospectus, including any document incorporated by reference therein or otherwise deemed part thereof or for additional information, (iv) of the issuance by the Commission of any stop order suspending the effectiveness of the Registration Statement or any post-effective amendment or of any order preventing or suspending the use of any preliminary prospectus or the Prospectus, or of the suspension of the qualification of the Offered Securities for offering or sale in any jurisdiction, or of the initiation or threatening of any proceedings for any of such purposes or of any examination pursuant to Section 8(d) or 8(e) of the 1933 Act concerning the Registration Statement, (v) if the Company becomes the subject of a proceeding under Section 8A of the 1933 Act in connection with the offering of the Offered Securities and (vi) of the receipt by the Company of any notification with respect to the suspension of the qualification of the Offered Securities for sale in any jurisdiction or the institution or threatening of any proceeding for such purpose. The Company will effect all filings required under Rule 424(b) relating to the Offered Securities, in the manner and within the time period required by Rule 424(b) (without reliance on Rule 424(b)(8)), and will take such steps as it deems necessary to ascertain promptly whether the form of prospectus supplement transmitted for filing under Rule 424(b) was received for filing by the Commission and, in the event that it was not, it will promptly file such prospectus supplement. The Company will use its reasonable efforts to prevent the issuance of any stop order, prevention or suspension and, if any such order is issued, to obtain the lifting thereof as soon as possible, including, if necessary, by filing an amendment to the Registration Statement or a new registration statement and using its reasonable efforts to have such amendment or new registration statement declared effective as soon as practicable.

(b) 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 Offered Securities as contemplated in this Agreement and in the Registration Statement, the General Disclosure Package and the Prospectus. If at any time when a prospectus relating to the Offered Securities is (or, but for the exception afforded by Rule 172 of the 1933 Act Regulations

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(“ Rule 172 ”), would be) required by the 1933 Act to be delivered in connection with sales of the Offered Securities, any event shall occur or condition shall exist as a result of which it is necessary, in the opinion of counsel for the Underwriters or for the Company, to (i) amend the Registration Statement in order that the Registration Statement will not include 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, (ii) amend or supplement the General Disclosure Package or the Prospectus in order that 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 not misleading in the light of the circumstances existing at the time it is delivered to a purchaser or (iii) amend the Registration Statement or amend or supplement the General Disclosure Package or the Prospectus, as the case may be, in order to comply with the requirements of the 1933 Act or the 1933 Act Regulations, the Company will promptly (A) give the Representative notice of such event, (B) prepare any amendment or supplement as may be necessary to correct such statement or omission or to make the Registration Statement, the General Disclosure Package or the Prospectus comply with such requirements and, a reasonable amount of time prior to any proposed filing or use, furnish the Representative with copies of any such amendment or supplement and (C) file with the Commission any such amendment or supplement; provided that the Company shall not file or use any such amendment or supplement to which the Representative or counsel for the Underwriters shall reasonably object. The Company will furnish to the Underwriters such number of copies of such amendment or supplement as the Underwriters may reasonably request.

(c) Delivery of Registration Statements . Upon request, the Company will deliver to the Representative and counsel for the Underwriters, without charge, signed copies of the Registration Statement as originally filed and 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 signed copies of all consents and certificates of experts, and will also deliver to the Representative, without charge, a conformed copy of the Registration Statement as originally filed and each amendment thereto (without exhibits) for each of the Underwriters. The copies of the Registration Statement and each amendment thereto furnished to the Underwriters 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.

(d) Delivery of Prospectuses . The Company has delivered to each Underwriter, without charge, as many copies of each preliminary prospectus as such Underwriter reasonably requested, and the Company hereby consents to the use of such copies for purposes permitted by the 1933 Act. The Company will furnish to each Underwriter, without charge, during the period when a prospectus relating to the Offered Securities is (or, but for the exception afforded by Rule 172, would be) required to be delivered under the 1933 Act, such number of copies of the Prospectus (as amended or supplemented) as such Underwriter may reasonably request. The Prospectus and any amendments or supplements thereto furnished to the Underwriters 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.

(e) Blue Sky Qualifications . The Company will use its reasonable efforts, in cooperation with the Underwriters, to qualify the Offered Securities for offering and sale under the applicable securities laws of such states and other jurisdictions (domestic or foreign) as the Representative may reasonably designate and to maintain such qualifications in effect so long as required to complete the distribution of the Offered Securities; 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.

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(f) 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.

(g) Use of Proceeds . The Company will use the net proceeds received by it from the sale of the Offered Securities in the manner specified in the Registration Statement, the General Disclosure Package and the Prospectus under “Use of Proceeds.”

(h) Listing . The Company will use its best efforts to effect and maintain the listing of the Shares and the Warrant Shares on the New York Stock Exchange.

(i) Restriction on Sale of Securities . During a period of sixty (60) days from the date of the Prospectus, the Company will not, without the prior written consent of the Representative, (i) directly or indirectly, 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 or otherwise transfer or dispose of any shares of Common Stock or any securities convertible into or exercisable or exchangeable for Common Stock or file any registration statement or prospectus under the 1933 Act with respect to any of the foregoing or publicly announce the intention to do any of the foregoing or (ii) enter into any swap or any other agreement or any transaction that transfers, in whole or in part, directly or indirectly, the economic consequence of ownership of the Common Stock, whether any such swap or transaction described in clause (i) or (ii) above is to be settled by delivery of Common Stock or other securities, in cash or otherwise. The foregoing sentence shall not apply to (A) the Offered Securities to be sold hereunder and the Warrant Shares, (B) any shares of Common Stock issued by the Company upon the exercise of an option or warrant or the conversion of a security outstanding on the date hereof and referred to in the Registration Statement, the General Disclosure Package and the Prospectus, (C) any shares of Common Stock issued or options to purchase Common Stock granted pursuant to existing employee benefit plans of the Company referred to in the Registration Statement, the General Disclosure Package and the Prospectus, or registration statements on Form S-8 filed with respect thereto or (D) any shares of Common Stock issued pursuant to any non-employee director stock plan or dividend reinvestment plan referred to in the Registration Statement, the General Disclosure Package and the Prospectus.

(j) Reporting Requirements . The Company, during the period when a Prospectus relating to the Offered Securities is (or, but for the exception afforded by Rule 172, would be) required to be delivered under the 1933 Act, will file all documents required to be filed with the Commission pursuant to the 1934 Act within the time periods required by the 1934 Act and 1934 Act Regulations. Additionally, the Company shall report the use of proceeds from the issuance of the Offered Securities as may be required under Rule 463 under the 1933 Act.

(k) Issuer Free Writing Prospectuses . The Company represents and agrees that, unless it obtains the prior written consent of the Representative, it will not make any offer relating to the Offered Securities that would constitute an Issuer Free Writing Prospectus or that would otherwise constitute a “free writing prospectus,” or a portion thereof, required to be filed by the Company with the Commission or retained by the Company under Rule 433; provided that the Representative will be deemed to have consented to the Issuer Free Writing Prospectuses listed on Schedule B-2 hereto and any “road show that is a written communication” within the meaning of Rule 433(d)(8)(i) that has been reviewed by the Representative. The Company represents that it has treated or agrees that it will treat each such free writing prospectus consented to, or deemed consented to, by the Representative as an “issuer free writing prospectus,” as defined in Rule 433, and that it has complied and will comply with the applicable requirements of Rule 433 with respect thereto, including timely filing with the Commission where required, legending and record keeping. If at any time following issuance of an Issuer Free Writing

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Prospectus there occurred or occurs an event or development as a result of which such Issuer Free Writing Prospectus conflicted or would conflict with the information contained in the Registration Statement, any preliminary prospectus or the Prospectus or included or would include an untrue statement of a material fact or omitted or would omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances existing at that subsequent time, not misleading, the Company will promptly notify the Representative and will promptly amend or supplement, at its own expense, such Issuer Free Writing Prospectus to eliminate or correct such conflict, untrue statement or omission.

(l) Maintenance of Registration. The Company shall, at all times while any Warrants are outstanding, use its best efforts to maintain a registration statement covering the issue and sale of the Warrant Shares upon exercise of the Warrants such that the Warrant Shares, when issued, will not be subject to resale restrictions under the Securities Act except to the extent that the Warrant Shares are owned by affiliates.

(m) Warrant Shares Reserved. The Company shall, at all times while any Warrants are outstanding, reserve and keep available out of the aggregate of its authorized but unissued and otherwise unreserved Common Stock, solely for the purpose of enabling it to issue Warrant Shares upon exercise of such Warrants, the number of Warrant Shares that are initially issuable and deliverable upon the exercise of the then outstanding Warrants.

SECTION 4. Payment of Expenses .

(a) Expenses . The Company will pay or cause to be paid all expenses incident to the performance of its obligations under this Agreement, including (i) the preparation, printing and filing of the Registration Statement (including financial statements and exhibits) as originally filed and each amendment thereto, (ii) the preparation, printing and delivery to the Underwriters of copies of each preliminary prospectus, each Issuer Free Writing Prospectus and the Prospectus and any amendments or supplements thereto and such other documents as may reasonably be required in connection with the offering, purchase, sale, issuance or delivery of the Offered Securities and any costs associated with electronic delivery of any of the foregoing by the Underwriters to investors, (iii) the preparation, issuance and delivery of the Offered Securities to the Underwriters, including any stock or other transfer taxes and any stamp or other duties payable upon the sale, issuance or delivery of the Offered Securities to the Underwriters (and any charges of DTC in connection therewith), (iv) the fees and disbursements of the Company’s counsel, accountants and other advisors, (v) the qualification of the Offered Securities under securities laws in accordance with the provisions of Section 3(e) 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 supplement thereto, (vi) the fees and expenses of any transfer agent or registrar for the Shares and Warrant Shares, (vii) the costs and expenses of the Company relating to investor presentations on any “road show” undertaken in connection with the marketing of the Offered Securities, including without limitation, expenses associated with the production of road show slides and graphics, fees and expenses of any consultants engaged in connection with the road show presentations, travel and lodging expenses of the representatives and officers of the Company and any such consultants, and the cost of aircraft and other transportation chartered in connection with the road show, (viii) the filing fees incident to, and the reasonable fees and disbursements of counsel to the Underwriters in connection with, the review by FINRA of the terms of the sale of the Offered Securities, (ix) the fees and expenses incurred in connection with the listing of the Shares and Warrant Shares on the New York Stock Exchange and (x) the costs and expenses (including, without limitation, any damages or other amounts payable in connection with legal or contractual liability) associated with the reforming of any contracts for sale of the Offered Securities made by the Underwriters caused by a breach of the representation contained in the third sentence of Section 1(a)(ii).

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(b) Termination of Agreement . If this Agreement is terminated by the Representative in accordance with the provisions of Section 5, Section 9(a)(i) or (iii) or Section 10 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; provided that if this Agreement is terminated pursuant to Section 10 hereof, such reimbursement of out-of-pocket expenses shall only be made by the Company to the non-defaulting 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 herein as of the date hereof and as of the applicable Closing Time and Date of Delivery or in certificates of any officer of the Company or any of its subsidiaries delivered pursuant to the provisions hereof, to the performance by the Company of its respective covenants and other obligations hereunder, and to the following further conditions:

(a) Effectiveness of Registration Statement; Filing of Prospectus; Payment of Filing Fee . The Registration Statement has become effective and, at the Closing Time, no stop order suspending the effectiveness of the Registration Statement shall have been issued under the 1933 Act or proceedings therefor or pursuant to Section 8A of the 1933 Act have been initiated or 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 counsel to the Underwriters. A prospectus containing the Rule 430B Information shall have been filed with the Commission in the manner and within the time period required by Rule 424(b) without reliance on Rule 424(b)(8) (or a post-effective amendment providing such information shall have been filed and become effective in accordance with the requirements of Rule 430B). Any material required to be filed by the Company pursuant to Rule 433(d) under the Rules and Regulations, shall have been filed with the Commission within the applicable periods prescribed for such filings by Rule 433.

(b) Opinion of Counsel for Company . At the Closing Time, the Representative shall have received the favorable opinion, dated as of the Closing Time, of Andrews Kurth Kenyon LLP, counsel for the Company, in form and substance reasonably satisfactory to counsel for the Underwriters, together with signed or reproduced copies of such letter for each of the other Underwriters to the effect set forth in Exhibit A hereto.

(c) Opinion of Counsel for Underwriters . At the Closing Time, the Representative shall have received the favorable opinion, dated as of the Closing Time, of Latham & Watkins LLP, counsel for the Underwriters, in form and substance reasonably satisfactory to the Representative.

(d) Officers’ Certificate . At the Closing Time, 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 or the Prospectus, any material adverse change in the condition, financial or otherwise, or in the earnings, business affairs or business prospects of the Company and its subsidiaries taken as a whole, whether or not arising in the ordinary course of business, and the Representative shall have received a certificate of the Chief Executive Officer or the President of the Company and of the chief financial or chief accounting officer of the Company, dated the Closing Time, 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 with the same force and effect as though expressly made at and as of the Closing Time, (iii) the Company has complied with all agreements and satisfied all conditions on its part to be performed or satisfied at or prior to the Closing Time, and (iv) no stop order suspending the effectiveness of the Registration Statement under the 1933 Act has been issued, no order preventing or suspending the use of any preliminary prospectus or the Prospectus has been issued and no proceedings for any of those purposes have been instituted or are pending or, to their knowledge, contemplated.

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(e) Accountant’s Comfort Letter . At the time of the execution of this Agreement, the Representative shall have received from Ernst & Young LLP a letter, dated such date, in form and substance satisfactory to the Representative, 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 contained in the Registration Statement, the General Disclosure Package and the Prospectus.

(f) Bring-down Comfort Letter . At the Closing Time, the Representative shall have received from Ernst & Young LLP a letter, dated as of the Closing Time, to the effect that they reaffirm the statements made in the letter furnished pursuant to subsection (e) of this Section, except that the specified date referred to shall be a date not more than three business days prior to the Closing Time.

(g) Approval of Listing . At the Closing Time, the Shares and Warrant Shares shall have been approved for listing on the New York Stock Exchange, subject only to official notice of issuance.

(h) No Objection . FINRA has confirmed that it has not raised any objection with respect to the fairness and reasonableness of the underwriting terms and arrangements relating to the offering of the Offered Securities.

(i) Lock-up Agreements . At the date of this Agreement, the Representative shall have received an agreement substantially in the form of Exhibit B hereto signed by the persons listed on Schedule C hereto.

(j) Maintenance of Rating . Since the execution of this Agreement, there shall not have been any decrease in or withdrawal of the rating of any securities of the Company or any of its subsidiaries by any “nationally recognized statistical rating organization” (as defined in Section 3(a)(62) of the 1934 Act) or any notice given of any intended or potential decrease in or withdrawal of any such rating or of a possible change in any such rating that does not indicate the direction of the possible change.

(k) Conditions to Purchase of Option Offered 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 Offered Securities, the representations and warranties of the Company contained herein and the statements in any certificates furnished by the Company and any of its subsidiaries hereunder shall be true and correct as of each Date of Delivery and, at the relevant Date of Delivery, the Representatives shall have received:

(i) Officers’ Certificate . A certificate, dated such Date of Delivery, of the President or a Vice President of the Company and of the chief financial or chief accounting officer of the Company confirming that the certificate delivered at the Closing Time pursuant to Section 5(d) hereof remains true and correct as of such Date of Delivery.

(ii) Opinion of Counsel for Company . If requested by the Representatives, the favorable opinion of Andrews Kurth Kenyon LLP, counsel for the Company, in form and substance reasonably satisfactory to counsel for the Underwriters, dated such Date of Delivery, relating to the Option Securities to be purchased on such Date of Delivery and otherwise to the same effect as the opinion required by Section 5(b) hereof.

(v) Opinion of Counsel for Underwriters . If requested by the Representatives, the favorable opinion of Latham & Watkins LLP, counsel for the Underwriters, dated such Date of Delivery, relating to the Option Securities to be purchased on such Date of Delivery and otherwise to the same effect as the opinion required by Section 5(c) hereof.

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(vi) Bring-down Comfort Letter . If requested by the Representatives, a letter from Ernst & Young LLP, in form and substance reasonably satisfactory to counsel for the Underwriters, dated such Date of Delivery and substantially in the same form and substance as the letter furnished to the Representatives 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 Date of Delivery.

(l) Termination of Agreement . If any condition specified in this Section 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 Offered Securities on a Date of Delivery which is after the Closing Time, the obligations of the several Underwriters to purchase the relevant Option Offered Securities, may be terminated by the Representative by written notice to the Company at any time at or prior to the Closing Time or such Date of Delivery, 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 and except that Sections 1, 6, 7, 8, 14 and 15 shall survive any such termination and remain in full force and effect.

SECTION 6. Indemnification .

(a) Indemnification of Underwriters . The Company agrees to indemnify and hold harmless each Underwriter, its affiliates, as such term is defined in Rule 501(b) under the 1933 Act (each, an “ Affiliate ”), its selling agents, directors, officers 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), including any information deemed to be a part thereof pursuant to Rule 430B, 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 (A) in any preliminary prospectus, any Issuer Free Writing Prospectus, the General Disclosure Package or the Prospectus (or any amendment or supplement thereto) or (B) in any materials or information provided to investors by, or with the approval of, the Company in connection with the marketing of the offering of the Offered Securities (“ Marketing Materials ”), including any roadshow or investor presentations made to investors by the Company (whether in person or electronically), or the omission or alleged omission in any preliminary prospectus, Issuer Free Writing Prospectus, Prospectus or in any Marketing Materials 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;

(iii) against any and all expense whatsoever, as incurred (including the fees and disbursements of counsel chosen by the Representative), reasonably incurred in investigating, preparing 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 the Registration Statement (or any amendment thereto), including any information deemed to be a part thereof pursuant to Rule 430B, the General Disclosure Package or the Prospectus (or any amendment or supplement thereto) in reliance upon and in conformity with the Underwriter Information.

(b) Indemnification of Company, Directors and Officers . Each Underwriter severally agrees to indemnify and hold harmless 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, against any and all loss, liability, claim, damage and expense described in the indemnity contained in subsection (a) of this Section 6, 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), including any information deemed to be a part thereof pursuant to Rule 430B, the General Disclosure Package or the Prospectus (or any amendment or supplement thereto) in reliance upon and in conformity with the Underwriter Information.

(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 result thereof and in any event shall not relieve it from any liability which it may have otherwise than on account of this indemnity agreement. In the case of parties indemnified pursuant to Section 6(a) above, counsel to the indemnified parties shall be selected by the Representative, and, in the case of parties indemnified pursuant to Section 6(b) above, counsel to the indemnified parties 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 parties be liable for fees and expenses of more than one counsel (in addition to any local counsel) separate from their own counsel for all indemnified parties 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, 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.

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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 Offered 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 Offered Securities pursuant to this Agreement shall be deemed to be in the same respective proportions as (x) the total net proceeds from the offering of the Offered Securities pursuant to this Agreement (before deducting expenses) received by the Company and (y) the total underwriting discounts received by the Underwriters in connection with the Offered Securities underwritten by it and distributed to the public, in each case as set forth on the cover of the Prospectus, bear to the sum of (x) and (y).

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 or by the Underwriters 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 which 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 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 underwriting discounts received by such Underwriter in connection with the Offered Securities underwritten by it and distributed to the public.

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 who was not guilty of such fraudulent misrepresentation.

For purposes of this Section 7, each person, if any, who controls an Underwriter within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act and each Underwriter’s affiliates, directors, officers and selling agents 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

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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 Offered Securities set forth opposite their respective names in Schedule A hereto and not joint.

SECTION 8. Representations, Warranties and Agreements to Survive . All representations, warranties and agreements contained in this Agreement or in certificates of officers of the Company or any of its subsidiaries submitted pursuant hereto, shall remain operative and in full force and effect regardless of (i) any investigation made by or on behalf of any Underwriter or its affiliates, directors, officers or selling agents, any person controlling any Underwriter, its officers or directors and any person controlling the Company and (ii) delivery of and payment for the Offered Securities.

SECTION 9. Termination of Agreement .

(a) Termination . The Representative may terminate this Agreement, by notice to the Company, at any time at or prior to the Closing Time (i) if there has been, in the judgment of the Representative, since the time of execution of this Agreement or since the respective dates as of which information is given in the Registration Statement, the General Disclosure Package or the Prospectus, any material adverse change in the condition, financial or otherwise, or in the earnings, business affairs or business prospects of the Company and its subsidiaries taken as a whole, whether or not arising in the ordinary course of business, or (ii) if there has occurred any material adverse change in the financial markets in the United States or the international financial markets, 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, in each case the effect of which is such as to make it, in the judgment of the Representative, impracticable or inadvisable to proceed with the completion of the offering or to enforce contracts for the sale of the Offered Securities, or (iii) if trading in any securities of the Company has been suspended or materially limited by the Commission or the New York Stock Exchange, or (iv) if trading generally on the New York Stock Exchange has been suspended or materially 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 (v) a material disruption has occurred in commercial banking or securities settlement or clearance services in the United States or with respect to Clearstream or Euroclear systems in Europe, or (vi) if a banking moratorium has been declared by either Federal or New York authorities.

(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 Section 4 hereof, and provided further that Sections 1, 6, 7, 8, 14 and 15 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 Time or a Date of Delivery to purchase the Offered 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:

(i) if the number of Defaulted Securities does not exceed 10% of the number of Offered 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 thereof in the proportions that their respective underwriting obligations hereunder bear to the underwriting obligations of all non-defaulting Underwriters, or

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(ii) if the number of Defaulted Securities exceeds 10% of the number of Offered Securities to be purchased on such date, this Agreement, or with respect to any Date of Delivery which occurs after the Closing Time, the obligations of the Underwriters to purchase, and the Company to sell, the Option Offered Securities to be purchased and sold on such Date of Delivery shall terminate without liability on the part of any non-defaulting Underwriter.

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

In the event of any such default which does not result in a termination of this Agreement or, in the case of a Date of Delivery which is after the Closing Time, which does not result in a termination of the obligation of the Underwriters to purchase and the Company to sell the relevant Option Offered Securities, as the case may be, either the Representative or the Company shall have the right to postpone the Closing Time or the relevant Date of Delivery, 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 the 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 and shall be deemed to have been duly given if mailed or transmitted by any standard form of telecommunication. Notices to the Underwriters shall be directed to the Representative at J.P. Morgan Securities LLC at 383 Madison Avenue, New York, New York 10179, attention of Equity Syndicate Desk (facsimile: (212) 622-8358); notices to the Company shall be directed to it at TETRA Technologies, Inc. at 24955 Interstate 45 North, The Woodlands, Texas 77380, attention of Chief Financial Officer.

SECTION 12. No Advisory or Fiduciary Relationship . The Company acknowledges and agrees that (a) the purchase and sale of the Offered Securities pursuant to this Agreement, including the determination of the public offering price of the Offered Securities and any related discounts and commissions, is an arm’s-length commercial transaction between the Company, on the one hand, and the several Underwriters, on the other hand, (b) in connection with the offering of the Offered Securities and the process leading thereto, each Underwriter is and has been acting solely as a principal and is not the agent or fiduciary of the Company, any of its subsidiaries or its stockholders, creditors, employees or any other party, (c) no Underwriter has assumed or will assume an advisory or fiduciary responsibility in favor of the Company with respect to the offering of the Offered Securities or the process leading thereto (irrespective of whether such Underwriter has advised or is currently advising the Company or any of its subsidiaries or on other matters) and no Underwriter has any obligation to the Company with respect to the offering of the Offered Securities except the obligations expressly set forth in this Agreement, (d) the Underwriters and their respective affiliates may be engaged in a broad range of transactions that involve interests that differ from those of the Company, and (e) the Underwriters have not provided any legal, accounting, regulatory or tax advice with respect to the offering of the Offered Securities and the Company has consulted its own respective legal, accounting, regulatory and tax advisors to the extent it deemed appropriate.

SECTION 13. Parties . This Agreement shall each inure to the benefit of and be binding upon the Underwriters and 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 and the Company and their respective successors and the affiliates, agents, controlling persons and officers and directors referred to in Sections 6 and 7 and their heirs and legal representatives,

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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 and the Company and their respective successors, and said controlling persons and officers and directors, affiliates, agents and their heirs and legal representatives, and for the benefit of no other person, firm or corporation. No purchaser of Offered Securities from any Underwriter shall be deemed to be a successor by reason merely of such purchase.

SECTION 14. Trial by Jury . The Company (on its 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 15. GOVERNING LAW . THIS AGREEMENT AND ANY CLAIM, CONTROVERSY OR DISPUTE ARISING UNDER OR RELATED TO THIS AGREEMENT SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF, THE STATE OF NEW YORK WITHOUT REGARD TO ITS CHOICE OF LAW PROVISIONS.

SECTION 16. Consent to Jurisdiction; Waiver of Immunity . Any legal suit, action or proceeding arising out of or based upon this Agreement or the transactions contemplated hereby (“ Related Proceedings ”) shall be instituted in (i) the federal courts of the United States of America located in the City and County of New York, Borough of Manhattan or (ii) the courts of the State of New York located in the City and County of New York, Borough of Manhattan (collectively, the “ Specified Courts ”), and each party irrevocably submits to the exclusive jurisdiction (except for proceedings instituted in regard to the enforcement of a judgment of any such court (a “ Related Judgment ”), as to which such jurisdiction is non-exclusive) of such courts in any such suit, action or proceeding. Service of any process, summons, notice or document by mail to such party’s address set forth above shall be effective service of process for any suit, action or other proceeding brought in any such court. The parties irrevocably and unconditionally waive any objection to the laying of venue of any suit, action or other proceeding in the Specified Courts and irrevocably and unconditionally waive and agree not to plead or claim in any such court that any such suit, action or other proceeding brought in any such court has been brought in an inconvenient forum.

SECTION 17. TIME . TIME SHALL BE OF THE ESSENCE OF THIS AGREEMENT. EXCEPT AS OTHERWISE SET FORTH HEREIN, SPECIFIED TIMES OF DAY REFER TO NEW YORK CITY TIME.

SECTION 18. Counterparts . This Agreement may be executed in any number of counterparts, each of which shall be deemed to be an original, but all such counterparts shall together constitute one and the same Agreement.

SECTION 19. Effect of Headings . The Section headings herein are for convenience only and shall not affect the construction hereof.

SECTION 20. Integration . This Agreement supersedes all prior agreements and understandings (whether written or oral) between the Company and the Underwriters with respect to the subject matter hereof.

SECTION 21. Partial Enforceability . The invalidity or unenforceability of any Section, paragraph or provision of this Agreement shall not affect the validity or enforceability of any other Section, paragraph or provision hereof. If any Section, paragraph or provision of this Agreement is for any reason determined to be invalid or unenforceable, there shall be deemed to be made such minor changes (and only such minor changes) as are necessary to make it valid and enforceable.

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SECTION 22. Patriot Act . In accordance with the requirements of the USA Patriot Act (Title III of Pub. L, 107-56 (signed into law October 26, 2001)), the Underwriters are required to obtain, verify and record information that identifies their clients, which may include the name and address of their clients, as well as other information that will allow the Underwriters to properly identify their clients.

[Signature Page Follows]

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SECTION 23. If the foregoing is in accordance with your understanding of our agreement, please sign and return to the Company and 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.

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

SCHEDULE A

The public offering price per share for the Shares shall be $5.15

The purchase price per share for the Shares to be paid by the several Underwriters shall be $4.91825, being an amount equal to the public offering price set forth above less $0.23175 per share, subject to adjustment in accordance with Section 2(b) for dividends or distributions declared by the Company and payable on the Initial Shares but not payable on the Option Shares.

Sch A-1

SCHEDULE B-1

Pricing Terms

1. Combined price per Share and Warrant to the public: $10.90

2. Number of Initial Shares: 19,400,000 shares

3. Number of Initial Warrant Shares: 9,700,000 shares

4. Number of Option Shares: 2,910,000 shares

5. Number of Option Warrant Shares: 1,455,000 shares

6. Initial Warrant exercise price: $5.75, subject to adjustment as described in the Preliminary Prospectus

7. Warrant Expiration Date: December 14, 2021

8. Structuring Fee Payable to J.P. Morgan: $500,000*

9. Incentive Fee Payable to J.P. Morgan: $500,000*

Sch B - 1

SCHEDULE B-2

Free Writing Prospectuses

Sch B - 2

SCHEDULE B-3

Limited Use Free Writing Prospectuses

Sch B - 3

SCHEDULE C

List of Persons and Entities Subject to Lock-up

Sch C - 1

Exhibit A

FORM OF OPINION OF COMPANY’S COUNSEL

TO BE DELIVERED PURSUANT TO SECTION 5(b) ¹

(a) The Issuer is validly existing as a corporation and in good standing under the laws of the State of Delaware.

(b) The Issuer has the corporate power and corporate authority under the laws of the State of Delaware to (i) execute and deliver, and incur and perform all of its obligations under each of the Transaction Documents and (ii) carry on its business and own its properties as described in the Registration Statement, the Preliminary Prospectus and the Prospectus.

(c) Each of the Transaction Documents has been duly authorized, executed and delivered by or on behalf of the Issuer.

(d) The authorized capital stock of the Issuer consists of (i) 150,000,000 shares of Common Stock and (iii) 5,000,000 shares of preferred stock, par value $0.01 per share, and such capital stock conforms as to legal matters to the description thereof contained in the Prospectus and the Disclosure Package under the heading “Description of Capital Stock.”

(e) The issuance and sale of the Shares and the Warrants, and the issuance of Warrant Shares upon exercise of the Warrants at the initial exercise price provided in the Warrants, have been duly authorized by all necessary corporate action of the Issuer.

(f) The holders of outstanding shares of capital stock of the Issuer are not entitled to any preemptive rights under the Issuer Certificate of Incorporation, the Issuer Bylaws, the General Corporation Law of the State of Delaware (the “ DGCL ”) or any Applicable Agreement, to subscribe for the Shares or the Warrants or the Warrant Shares issuable upon the exercise of the Warrants.

(g) No Person has the right, which has not been waived, under any Applicable Agreement to require the registration under the Securities Act of any sale of securities issued by the Issuer by reason of the filing or effectiveness of the Registration Statement.

(h) When delivered to and paid for by the Underwriters in accordance with the terms of the Underwriting Agreement, the Shares will be validly issued, fully paid and nonassessable. Upon the issuance of the Warrant Shares issuable upon exercise of the Warrants in accordance with the terms thereof, such Warrant Shares will be validly issued, fully paid and nonassessable.

(i) None of (i) the execution and delivery by the Issuer of the Transaction Documents and (ii) the consummation by the Issuer of the issuance and sale of the Shares, Warrants and the issuance of Warrant Shares upon exercise of the Warrants pursuant to the Underwriting Agreement, (A) constituted, constitutes or will constitute a violation of the Issuer Certificate of Incorporation or the Issuer Bylaws, (B) constituted, constitutes or will constitute a breach or violation of, or a default (or an event which, with notice or lapse of time or both, would constitute such a default) under, any Applicable Agreement, (C) resulted, results or will result in the creation of any security interest in, or lien upon, any of the property or assets of the Issuer pursuant to any Applicable Agreement, (D) resulted, results or will result in any violation of (i) applicable laws of the State of Texas, (ii) applicable laws of the State of New York, (iii) applicable laws of the United States of America or (iv) the DGCL or (E) resulted, results or will result in the contravention of any Applicable Order.

A-1

(j) No Governmental Approval or Filing, which has not been obtained or made and is not in full force and effect, is required to authorize, or is required for, the execution and delivery by the Issuer of the Transaction Documents or the consummation of the issuance and sale of the Shares, Warrants and the issuance of Warrant Shares upon exercise of the Warrants pursuant to the Underwriting Agreement. As used in this paragraph, “ Governmental Approval or Filing ” means any consent, approval, license, authorization or validation of, or filing, recording or registration with, any executive, legislative, judicial, administrative or regulatory body of the State of New York, the State of Texas, the State of Delaware or the United States of America, pursuant to (i) applicable laws of the State of Texas, (ii) applicable laws of the State of New York, (iii) applicable laws of the United States of America or (iv) the DGCL.

(k) The statements under the caption “Description of Capital Stock” in the Base Prospectus and under the captions “Description of the Warrants” and “Material U.S. Federal Income Tax Considerations” in the Preliminary Prospectus and Prospectus, insofar as such statements purport to summarize certain provisions of documents and legal matters referred to therein and reviewed by us as described above, fairly and accurately summarize such provisions and legal matters in all material respects, subject to the qualifications and assumptions stated therein.

(l) The Issuer is not and, immediately after giving effect to the issuance and sale of the Shares and Warrants occurring today and the application of proceeds therefrom as described in the Disclosure Package and the Prospectus, will not be, an “investment company” within the meaning of the Investment Company Act of 1940, as amended.

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Exhibit B

[Form of lock-up from directors, officers or other stockholders pursuant to Section 5(k)]

December [●], 2016

J.P. Morgan Securities LLC

383 Madison Avenue

New York, New York 10179

As Representative of the several Underwriters

named in the within-mentioned Underwriting Agreement

Dear Sirs:

The undersigned, a stockholder and an officer and/or director of TETRA Technologies, Inc., a Delaware corporation (the “ Company ”), understands that J.P. Morgan Securities LLC proposes to enter into an Underwriting Agreement (the “ Underwriting Agreement ”), as representative of the several underwriters to be named in the Underwriting Agreement (in such capacity, the “ Representative ”), with the Company providing for the public offering (the “ Public Offering ”) of (i) shares of the Company’s common stock, par value $0.01 per share (“ Common Stock ”) and (ii) warrants of the Company to purchase shares of Common Stock (the “ Warrants ”). In recognition of the benefit that such an offering will confer upon the undersigned as a stockholder and an officer and/or director of the Company, and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the undersigned agrees with each underwriter to be named in the Underwriting Agreement that, during the period beginning on the date hereof and ending on the date that is sixty (60) days from the date of the Underwriting Agreement (subject to extensions as discussed below), the undersigned will not, without the prior written consent of the Representative, (i) directly or indirectly, 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 or otherwise transfer or dispose of any shares of Common Stock or any securities convertible into or exercisable or exchangeable for Common Stock, whether now owned or hereafter acquired by the undersigned or with respect to which the undersigned has or hereafter acquires the power of disposition (collectively, the “ Lock-Up Securities ”), or exercise any right with respect to the registration of any of the Lock-up Securities, or file or cause to be filed any registration statement in connection therewith, under the Securities Act of 1933, as amended or publicly announce the intention to do any of the foregoing, or (ii) enter into any swap or any other agreement or any transaction that transfers, in whole or in part, directly or indirectly, the economic consequence of ownership of the Lock-Up Securities, whether any such swap or transaction is to be settled by delivery of Common Stock or other securities, in cash or otherwise. This agreement will be governed by the laws of the state of New York in accordance with Section 15 of the Underwriting Agreement.

Notwithstanding the foregoing, and subject to the conditions below, the undersigned may transfer the Lock-Up Securities without the prior written consent of the Representative, provided that (1) the Representative receive a signed lock-up agreement for the balance of the lockup period from each donee, trustee, distributee, or transferee, as the case may be, (2) any such transfer shall not involve a disposition for value, (3) such transfers are not required to be reported with the Securities and Exchange Commission under Section 16 of the Securities Exchange Act of 1934, as amended and (4) the undersigned does not otherwise voluntarily effect any public filing or report regarding such transfers:

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Furthermore, the undersigned may sell shares of Common Stock of the Company purchased by the undersigned on the open market following the Public Offering if and only if (i) such sales are not required to be reported with the Securities and Exchange Commission under Section 16 of the Securities Exchange Act of 1934, as amended and (ii) the undersigned does not otherwise voluntarily effect any public filing or report regarding such sales. In addition, the undersigned may, without the prior written consent of the Representative, (i) sell Lock-Up Securities to the Company for purposes of satisfying any tax withholding obligation that arises in connection with the vesting of awards granted under the Company’s equity incentive plans and (ii) sell any Lock-Up Securities to the Company acquired pursuant to the Company’s Cash Incentive Compensation Plan, effective January 1, 2010, as amended, with respect to any awards made for 2015 performance.

The undersigned also agrees and consents to the entry of stop transfer instructions with the Company’s transfer agent and registrar against the transfer of the Lock-Up Securities except in compliance with the foregoing restrictions.