Gevo, Inc. - SEC Filing

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Form 8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): June 29, 2012

Gevo, Inc.

(Exact name of registrant as specified in its charter)

Delaware

001-35073

87-0747704

(State or other jurisdiction

of incorporation)

(Commission

File Number)

(IRS Employer

Identification No.)

345 Inverness Drive South, Building C, Suite 310, Englewood, CO 80112

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code: (303) 858-8358

N/A

(Former Name, or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

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

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

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

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

Item 1.01.

Entry into a Material Definitive Agreement.

Common Stock Offering

On June 29, 2012, Gevo, Inc. (the “Company”) entered into an underwriting agreement (the “Common Stock Underwriting Agreement”) with UBS Securities LLC, Piper Jaffray & Co. and the other underwriters named in Schedule A thereto (collectively, the “Common Stock Underwriters”) relating to the sale and issuance by the Company of shares of the Company’s common stock to the Common Stock Underwriters in a firm commitment underwritten public offering. Subject to the terms and conditions contained in the Common Stock Underwriting Agreement, the Common Stock Underwriters have agreed to purchase, and the Company has agreed to sell, 12,500,000 shares at the public offering price, less certain underwriting discounts and commissions (the “Common Stock Offering”). The Company has also agreed to reimburse the Common Stock Underwriters for certain of their out-of-pocket expenses.

The shares of the Company’s common stock are being offered and sold pursuant to a base prospectus dated May 8, 2012 and a prospectus supplement dated June 29, 2012 (together the “Common Stock Prospectus”), pursuant to the Company’s registration statement on Form S-3 (File No. 333-180097), which was declared effective by the Securities and Exchange Commission (the “SEC”) on May 8, 2012.

Subject to the terms and conditions of the Common Stock Underwriting Agreement, the Common Stock Underwriters are committed to purchase and pay for all shares of the Company’s common stock offered by the Common Stock Prospectus, if any such shares are taken. However, the Common Stock Underwriters are not obligated to take or pay for the shares of the Company’s common stock covered by the Common Stock Underwriters’ over-allotment option described below, unless and until such option is exercised.

The Company has granted the Common Stock Underwriters an option, exercisable no later than 30 calendar days after the date of the Common Stock Underwriting Agreement, to purchase up to an aggregate of 1,875,000 additional shares of the Company’s common stock at the public offering price, less certain underwriting discounts and commissions. The Company will be obligated to sell these shares of common stock to the Common Stock Underwriters to the extent the over-allotment option is exercised. The Common Stock Underwriters propose to offer the Company’s common stock directly to the public at the offering price of $4.95 per share.

Convertible Senior Notes Offering

On June 29, 2012, the Company entered into an underwriting agreement (the “Convertible Note Underwriting Agreement”) with UBS Securities LLC and Piper Jaffray & Co. (the “Convertible Note Underwriters” together with the Common Stock Underwriters, the “Underwriters”) relating to the sale and issuance by the Company of 7.5% convertible senior notes due 2022 (the “Notes”) to the Convertible Note Underwriters in a firm commitment underwritten public offering. Subject to the terms and conditions contained in the Convertible Note Underwriting Agreement, the Convertible Note Underwriters have agreed to purchase, and the Company has agreed to sell, $40,000,000 aggregate principal amount of Notes, less certain underwriting discounts and commissions (the “Note Offering”). The Company has also agreed to reimburse the Convertible Note Underwriters for certain of their out-of-pocket expenses.

The Notes are being offered and sold pursuant to a base prospectus dated May 8, 2012 and a prospectus supplement dated June 29, 2012 (together the “Convertible Note Prospectus”), pursuant to the Company’s registration statement on Form S-3 (File No. 333-180097), which was declared effective by the SEC on May 8, 2012.

Subject to the terms and conditions of the Convertible Note Underwriting Agreement, the Convertible Note Underwriters are committed to purchase and pay for all the Notes offered by the Convertible Note Prospectus Supplement, if any such Notes are taken. However, the Convertible Note Underwriters are not obligated to take and pay for the Notes covered by the Convertible Note Underwriters’ over-allotment option described below, unless and until such option is exercised.

The Company has granted the Convertible Note Underwriters an option, exercisable no later than 30 calendar days after the date of the Convertible Note Underwriting Agreement, to purchase up to an additional $5,000,000 aggregate principal amount of Notes, less certain underwriting discounts and commissions. The Company will be obligated to sell these additional Notes to the Convertible Note Underwriters to the extent the over-allotment option is exercised.

Use of Proceeds

The Company intends to use the net proceeds from the Common Stock Offering and Note Offering (the “Offerings”) to fund the cash consideration payable to complete the retrofit of the 22 MGPY ethanol production facility in Luverne, Minnesota that it acquired in September 2010. A portion of the net proceeds from the Offerings may be used for detailed design work in preparation for the retrofit of the 50 MGPY ethanol production facility located near Redfield, South Dakota to isobutanol production pursuant to a joint venture agreement that the Company entered into in June 2011. The Company also intends to use the net proceeds from the Note Offering to repay $5.0 million in outstanding long-term debt obligations. The Company may also use a portion of the net proceeds of the Offerings to fund working capital and other general corporate purposes, which may include paying down certain of its other long-term debt obligations and expenses associated with litigation. Pending such uses, the Company intends to invest the net proceeds in demand deposit accounts or short-term, investment grade securities.

The foregoing descriptions of the Common Stock Underwriting Agreement, the Convertible Note Underwriting Agreement (together, the “Underwriting Agreements”) and the transactions contemplated thereby do not purport to be complete and are subject to, and qualified in their entirety by, the full text of the Common Stock Underwriting Agreement and Convertible Note Underwriting Agreement, a copy of each of which is attached hereto as Exhibit 1.1 and Exhibit 1.2, respectively, and the terms of each of which are incorporated herein by reference. The Underwriting Agreements contain customary representations, warranties and agreements by the Company, customary conditions to closing, indemnification obligations of the Company and the Underwriters, including for liabilities under the Securities Act of 1933, as amended, other obligations of the parties and termination provisions. The representations, warranties and covenants contained in the Underwriting Agreements are solely for the benefit of the parties to such agreement, and may be subject to limitations agreed upon by the contracting parties.

A copy of the opinions of Paul Hastings LLP relating to the legality of the issuance and sale of the Company’s common stock in the Common Stock Offering and the legality of the issuance and sale of the Notes in the Note Offering are attached as Exhibit 5.1 and Exhibit 5.2 hereto, respectively.

Item 8.01.

Other Events.

On June 29, 2012, the Company issued a press release announcing the pricing of the Common Stock Offering at a public offering price of $4.95 per share and the Note Offering. The Underwriters will have an option to purchase up to an additional 1,875,000 shares of the Company’s common stock and up to an additional $5,000,000 aggregate principal amount of Notes, in each case to cover over-allotments, if any. The Offerings are expected to close on or about July 5, 2012, subject to customary closing conditions. A copy of this press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.

Additional Information and Where to Find It

No statement in this document or the attached exhibits is an offer to sell, or the solicitation of an offer to buy, securities. The Company has filed a registration statement (including a prospectus) and a prospectus supplement with the SEC for an underwritten public offering for each of the Offerings described under Item 1.01 of this Current Report on Form 8-K. Before you invest in any such Offerings, you should read the prospectus supplements, including the registration statement (and accompanying prospectus), and other documents the Company has filed with the SEC for more complete information about the issuer and the Offerings. You may get these documents for free by visiting EDGAR on the SEC website at www.sec.gov. Alternatively, the Company or the Underwriters participating in the Offerings will arrange to send you the prospectus supplements and accompanying prospectuses if you request them by calling toll-free (888) 722-9555, extension 19423-2626 or through your usual contact at either UBS Securities LLC or Piper Jaffray & Co.

Forward-Looking Statements

Certain statements in this Current Report on Form 8-K and in the attached exhibits may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements relate to a variety of matters, including, without limitation, the Company’s expectations regarding the sale of shares of its common stock in the Common Stock Offering, the sale of the Notes in the Note Offering, the Underwriters’ exercise of the over-allotment option in either Offering, the Company’s intended use of the net proceeds from the Offerings, the anticipated closing date of the Offerings and other statements that are not purely statements of historical fact. These forward-looking statements are made on the basis of the current beliefs, expectations and assumptions of the management of the Company and are subject to significant risks and uncertainty. Investors are cautioned not to place undue reliance on any such forward-looking statements. All such forward-looking statements speak only as of the date they are made, and the Company undertakes no obligation to update or revise these statements, whether as a result of new information, future events or otherwise. Factors that could cause actual results to differ materially from those described in the forward-looking statements are set forth in the prospectus supplements for each Offering.

Item 9.01.

Financial Statements and Exhibits.

(d)

Exhibits.


1.1		Underwriting Agreement, dated June 29, 2012, between Gevo, Inc., UBS Securities LLC, Piper Jaffray & Co. and the other underwriters named in Schedule A thereto, related to the offering of common stock of Gevo, Inc.

1.2		Underwriting Agreement, dated June 29, 2012, between Gevo, Inc., UBS Securities LLC and Piper Jaffray & Co., related to the offering of convertible senior notes due 2022 of Gevo, Inc.

5.1		Opinion of Paul Hastings LLP, related to the offering of common stock of Gevo, Inc.

5.2		Opinion of Paul Hastings LLP, related to the offering of convertible senior notes due 2022 of Gevo, Inc.

23.1		Consent of Paul Hastings LLP (included in Exhibit 5.1).

23.2		Consent of Paul Hastings LLP (included in Exhibit 5.2).

99.1		Press release dated June 29, 2012.

SIGNATURES

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


Gevo, Inc.

By:		/s/ Mark Smith
		Mark Smith
		Chief Financial Officer

Date: July 2, 2012

Underwriting Agreement

Exhibit 1.1

EXECUTION COPY

GEVO, INC.

12,500,000 Shares

Common Stock

($0.01 par value per Share)

UNDERWRITING AGREEMENT

June 29, 2012

UNDERWRITING AGREEMENT

June 29, 2012

UBS Securities LLC

Piper Jaffray & Co.

as Managing Underwriters

c/o UBS Securities LLC

299 Park Avenue

New York, New York 10171-0026

c/o Piper Jaffray & Co.

800 Nicollet Mall, Suite 800

Minneapolis, MN 55402

Ladies and Gentlemen:

Gevo, Inc., a Delaware corporation (the “Company”), proposes to issue and sell to the underwriters named in Schedule A annexed hereto (the “Underwriters”), for whom you are acting as representatives, an aggregate of 12,500,000 shares (the “Firm Shares”) of common stock, $0.01 par value per share (the “Common Stock”), of the Company. In addition, solely for the purpose of covering over-allotments, the Company proposes to grant to the Underwriters the option to purchase from the Company up to an additional 1,875,000 shares of Common Stock (the “Additional Shares”). The Firm Shares and the Additional Shares, if and to the extent such option is exercised, are hereinafter collectively sometimes referred to as the “Shares.” The Shares are described in the Prospectus which is referred to below.

The Company has prepared and filed, in accordance with the provisions of the Securities Act of 1933, as amended, and the rules and regulations thereunder (collectively, the “Act”), with the Securities and Exchange Commission (the “Commission”) a “shelf” registration statement on Form S-3 (File No. 333-180097) under the Act, including a basic prospectus, relating to the securities registered pursuant to such registration statement, which registration statement incorporates by reference documents which the Company has filed, or will file, in accordance with the provisions of the Securities Exchange Act of 1934, as amended, and the rules and regulations thereunder (collectively, the “Exchange Act”).

Except where the context otherwise requires, “Registration Statement,” as used herein, means the registration statement, as amended at the time of such registration statement’s effectiveness for purposes of Section 11 of the Act, as such section applies to the respective Underwriters (the “Effective Time”), including (i) all documents filed as a part thereof or incorporated or deemed to be incorporated by reference therein, (ii) any information contained or incorporated by reference in a prospectus filed with the Commission pursuant to Rule 424(b) under the Act, to the extent such information is deemed, pursuant to Rule 430B or 430C under the Act, to be part of the registration statement at the Effective Time, and (iii) any registration statement filed to register the offer and sale of Shares pursuant to Rule 462(b) under the Act.

The Company has furnished to you, for use by the Underwriters and by dealers in connection with the offering of the Shares, copies of one or more preliminary prospectus

supplements and the documents incorporated by reference therein, relating to the Shares. Except where the context otherwise requires, “Pre-Pricing Prospectus,” as used herein, means each such preliminary prospectus supplement, in the form so furnished, including any basic prospectus (whether or not in preliminary form) furnished to you by the Company and attached to or used with such preliminary prospectus supplement. Except where the context otherwise requires, “Basic Prospectus,” as used herein, means any such basic prospectus and any basic prospectus furnished to you by the Company and attached to or used with the Prospectus Supplement (as defined below).

Except where the context otherwise requires, “Prospectus Supplement,” as used herein, means the final prospectus supplement, relating to the Shares, filed by the Company with the Commission pursuant to Rule 424(b) under the Act on or before the second business day after the date hereof (or such earlier time as may be required under the Act) in the form furnished by the Company to you for use by the Underwriters and by dealers in connection with the offering of the Shares.

Except where the context otherwise requires, “Prospectus,” as used herein, means the Prospectus Supplement together with the Basic Prospectus attached to or used with the Prospectus Supplement.

“Permitted Free Writing Prospectuses,” as used herein, means the documents listed on Schedule B attached hereto and each “road show” (as defined in Rule 433 under the Act), if any, related to the offering of the Shares contemplated hereby that is a “written communication” (as defined in Rule 405 under the Act). The Underwriters have not offered or sold and will not offer or sell, without the Company’s consent, any Shares by means of any “free writing prospectus” (as defined in Rule 405 under the Act) that is required to be filed by the Underwriters or the Company with the Commission pursuant to Rule 433 under the Act, other than a Permitted Free Writing Prospectus.

“Covered Free Writing Prospectuses,” as used herein, means (i) each “issuer free writing prospectus” (as defined in Rule 433(h)(1) under the Act), if any, relating to the Shares, which is not a Permitted Free Writing Prospectus and (ii) each Permitted Free Writing Prospectus.

“Disclosure Package,” as used herein, means any Pre-Pricing Prospectus together with any combination of one or more of the Permitted Free Writing Prospectuses, if any.

“Applicable Time”, as used herein, means 7:30 A.M., New York City time, on June 29, 2012.

shall be deemed to refer to and include the filing of any document under the Exchange Act on or after the initial effective date of the Registration Statement, or the date of such Basic Prospectus, such Pre-Pricing Prospectus, the Prospectus Supplement, the Prospectus or such Permitted Free Writing Prospectus, as the case may be, and deemed to be incorporated therein by reference.

As used in this Agreement, “business day” shall mean a day on which the NASDAQ Global Market (the “NASDAQ”) is open for trading. The terms “herein,” “hereof,” “hereto,” “hereinafter” and similar terms, as used in this Agreement, shall in each case refer to this Agreement as a whole and not to any particular section, paragraph, sentence or other subdivision of this Agreement. The term “or,” as used herein, is not exclusive.

The Company and the Underwriters agree as follows:

1. Sale and Purchase. Upon the basis of the representations and warranties and subject to the terms and conditions herein set forth, the Company agrees to issue and sell to the respective Underwriters and each of the Underwriters, severally and not jointly, agrees to purchase from the Company the respective number of Firm Shares (subject to such adjustment as UBS Securities LLC or Piper Jaffray & Co. may determine to avoid fractional shares) which bears the same proportion to the total number of Firm Shares to be sold by the Company as the number of Firm Shares set forth opposite the name of such Underwriter in Schedule A annexed hereto, subject to adjustment in accordance with Section 8 hereof, bears to the total number of Firm Shares, in each case at a purchase price of $4.653 per Share. The Company is advised by you that the Underwriters intend (i) to make a public offering of their respective portions of the Firm Shares as soon after the effective date of the Registration Statement as in your judgment is advisable and (ii) initially to offer the Firm Shares upon the terms set forth in the Prospectus. You may from time to time increase or decrease the public offering price after the initial public offering to such extent as you may determine.

In addition, the Company hereby grants to the several Underwriters the option (the “Option to Purchase Additional Shares”) to purchase, and upon the basis of the representations and warranties and subject to the terms and conditions herein set forth, the Underwriters shall have the right to purchase, severally and not jointly, from the Company, ratably in accordance with the number of Firm Shares to be purchased by each of them, all or a portion of the Additional Shares as may be necessary to cover over-allotments, if any, made in connection with the offering of the Firm Shares, at the same purchase price per Share to be paid by the Underwriters to the Company for the Firm Shares. The Option to Purchase Additional Shares may be exercised by UBS Securities LLC on behalf of the several Underwriters at any time and from time to time on or before the thirtieth day following the date of this Agreement, by written notice to the Company. Such notice shall set forth the aggregate number of Additional Shares as to which the Option to Purchase Additional Shares is being exercised and the date and time when the Additional Shares are to be delivered (any such date and time being herein referred to as an “additional time of purchase”); provided, however, that no additional time of purchase shall be earlier than the “time of purchase” (as defined below) nor earlier than the second business day after the date on which the Option to Purchase Additional Shares shall have been exercised nor later than the tenth business day after the date on which the Option to Purchase Additional Shares shall have been exercised. The number of Additional Shares to be sold to each Underwriter shall be the number which bears the same proportion to the aggregate number of

Additional Shares being purchased as the number of Firm Shares set forth opposite the name of such Underwriter on Schedule A hereto bears to the total number of Firm Shares (subject, in each case, to such adjustment as UBS Securities LLC and Piper Jaffray & Co. (collectively, the “Managing Underwriters”) may determine to eliminate fractional shares), subject to adjustment in accordance with Section 8 hereof.

2. Payment and Delivery. Payment of the purchase price for the Firm Shares shall be made to the Company by federal funds wire transfer against delivery of the certificates for the Firm Shares to you through the facilities of The Depository Trust Company (“DTC”) for the respective accounts of the Underwriters. Such payment and delivery shall be made at 10:00 A.M., New York City time, on the closing date (unless another time shall be agreed to by you and the Company or unless postponed in accordance with the provisions of Section 8 hereof). The time at which such payment and delivery are to be made is hereinafter sometimes called the “time of purchase.” Electronic transfer of the Firm Shares shall be made to you at the time of purchase in such names and in such denominations as you shall specify.

Payment of the purchase price for the Additional Shares shall be made at the additional time of purchase in the same manner and at the same office and time of day as the payment for the Firm Shares. Electronic transfer of the Additional Shares shall be made to you at the additional time of purchase in such names and in such denominations as you shall specify.

Deliveries of the documents described in Section 6 hereof with respect to the purchase of the Shares shall be made at the offices of Covington & Burling LLP at 620 Eighth Avenue, New York, New York 10018, at 9:00 A.M., New York City time, on the date of the closing of the purchase of the Firm Shares or the Additional Shares, as the case may be.

3. Representations and Warranties of the Company. The Company represents and warrants to and agrees with each of the Underwriters that:

(a) the Registration Statement has heretofore become effective under the Act or, with respect to any registration statement to be filed to register the offer and sale of Shares pursuant to Rule 462(b) under the Act, will be filed with the Commission and become effective under the Act no later than 10:00 P.M., New York City time, on the date of determination of the public offering price for the Shares; no stop order of the Commission preventing or suspending the use of any Basic Prospectus, any Pre-Pricing Prospectus, the Prospectus Supplement, the Prospectus or any Permitted Free Writing Prospectus, or the effectiveness of the Registration Statement, has been issued, and no proceedings for such purpose have been instituted or, to the Company’s knowledge, are contemplated by the Commission;

(b) as of the Effective Time, the Registration Statement complied, in all material respects, with the requirements of the Act and did not contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading; the conditions to the use of Form S-3 in connection with the offering and sale of the Shares as contemplated hereby have been satisfied; the Registration Statement meets, and the offering and sale of the Shares as contemplated hereby complies with, the requirements of Rule 415 under the Act; the Pre-Pricing Prospectus complied, at the time it was filed with the Commission, and complies as of the date hereof, in all material respects, with

the requirements of the Act; the Disclosure Package, as of the Applicable Time, did not include an untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading; the Prospectus will comply, as of its date, the time of purchase, and each additional time of purchase, if any, and at all times during which a prospectus is required by the Act to be delivered (whether physically or through compliance with Rule 172 under the Act of any similar rule) in connection with any sale of Shares, in all material respects, with the requirements of the Act (including, without limitation, Section 10(a) of the Act); at no time during the period that begins on the date of the Prospectus Supplement and ends at the later of the time of purchase, and any additional time of purchase, if any, and the end of the period during which a prospectus is required by the Act to be delivered (whether physically or through compliance with Rule 172 under the Act of any similar rule) in connection with any sale of Shares did or will the Prospectus, as then amended or supplemented, include an untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading; provided, however, that the Company makes no representation or warranty in this Section 3(b) or otherwise with respect to any statement contained in the Registration Statement, the Disclosure Package or the Prospectus made in reliance upon and in conformity with information concerning an Underwriter and furnished in writing by or on behalf of such Underwriter through you to the Company expressly for use in the Registration Statement, the Disclosure Package or the Prospectus; each Incorporated Document, at the time such document was filed, or will be filed, with the Commission or at the time such document became or becomes effective, as applicable, complied or will comply, in all material respects, with the requirements of the Exchange Act and did not or will not, as applicable, include an untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading;

(c) prior to the execution of this Agreement, the Company has not, directly or indirectly, offered or sold any Shares by means of any “prospectus” (within the meaning of the Act) or used any “prospectus” (within the meaning of the Act) in connection with the offer or sale of the Shares, in each case other than the Pre-Pricing Prospectuses and the Permitted Free Writing Prospectuses, if any; the Company has not, directly or indirectly, prepared, used or referred to any Permitted Free Writing Prospectus except in compliance with Rules 164 and 433 under the Act; assuming that such Permitted Free Writing Prospectus is so sent or given after the Registration Statement was filed with the Commission (and after such Permitted Free Writing Prospectus was, if required pursuant to Rule 433(d) under the Act, filed with the Commission), the sending or giving, by any Underwriter, of any Permitted Free Writing Prospectus will satisfy the provisions of Rule 164 and Rule 433 (without reliance on subsections (b), (c) and (d) of Rule 164); the conditions set forth in one or more of subclauses (i) through (iv), inclusive, of Rule 433(b)(1) under the Act are satisfied, and the registration statement relating to the offering of the Shares contemplated hereby, as initially filed with the Commission, includes a prospectus that, other than by reason of Rule 433 or Rule 431 under the Act, satisfies the requirements of Section 10 of the Act; neither the Company nor the Underwriters are disqualified, by reason of subsection (f) or (g) of Rule 164 under the Act, from using, in connection with the offer and sale of the Shares, “free writing prospectuses” (as defined in Rule 405 under the Act) pursuant to Rules 164 and 433 under the Act; the Company is not an “ineligible issuer” (as defined in Rule 405 under the Act) as of the eligibility determination date for purposes of Rules 164 and 433

under the Act with respect to the offering of the Shares contemplated by the Registration Statement; the parties hereto agree and understand that the content of any and all “road shows” (as defined in Rule 433 under the Act) related to the offering of the Shares contemplated hereby is solely the property of the Company;

(d) as of the date of this Agreement, the Company has an authorized and outstanding capitalization as set forth in the sections of the Disclosure Package and the Prospectus entitled “Capitalization” and “Description of capital stock” (and any similar sections or information, if any, contained in any Permitted Free Writing Prospectus), and, as of the time of purchase and any additional time of purchase, as the case may be, the Company shall have an authorized and outstanding capitalization as set forth in the sections of the Disclosure Package and the Prospectus entitled “Capitalization” and “Description of capital stock” (and any similar sections or information, if any, contained in any Permitted Free Writing Prospectus) (subject, in each case, to the issuance of shares of Common Stock upon exercise of stock options and warrants disclosed as outstanding in the Registration Statement (excluding the exhibits thereto), the Disclosure Package and the Prospectus, and the issuance of Common Stock or any equity awards (including the issuance of Common Stock upon exercise or settlement of such equity awards) pursuant to the Company’s equity incentive plans, employee stock purchase plan or other employee compensation plans as such plans are in existence on the date hereof and described in the Registration Statement (excluding the exhibits thereto), the Disclosure Package and the Prospectus); all of the issued and outstanding shares of Common Stock of the Company have been duly authorized and validly issued and are fully paid and non-assessable, have been issued in compliance with all applicable securities laws and were not issued in violation of any preemptive right, resale right, right of first refusal or similar right;

(e) the Company has been duly incorporated and is validly existing as a corporation in good standing under the laws of the State of Delaware, with full corporate power and authority to own, lease and operate its properties and conduct its business as described in the Disclosure Package and the Prospectus, to execute and deliver this Agreement and to issue, sell and deliver the Shares as contemplated herein;

(f) the Company is duly qualified to do business as a foreign corporation and is in good standing in each jurisdiction where the ownership or leasing of its properties or the conduct of its business requires such qualification, except where the failure to be so qualified and in good standing would not, individually or in the aggregate, have a material adverse effect on the business, properties, financial condition, results of operations of the Company and the Subsidiaries (as defined below) taken as a whole (the occurrence of any such effect being herein referred to as a “Material Adverse Effect”);

of the Company and each Subsidiary and all amendments thereto have been delivered to you, and no changes therein will be made on or after the date hereof through and including the time of purchase or, if later, any additional time of purchase; each Subsidiary has been duly incorporated or formed and is validly existing as a corporation, limited liability company, or other entity in good standing under the laws of the jurisdiction of its incorporation or formation, with full corporate or other power and authority to own, lease and operate its properties and to conduct its business as described in the Disclosure Package and the Prospectus; each Subsidiary is duly qualified to do business as a foreign corporation, limited liability company, or other entity and is in good standing in each jurisdiction where the ownership or leasing of its properties or the conduct of its business requires such qualification, except where the failure to be so qualified and in good standing would not, individually or in the aggregate, have a Material Adverse Effect; all of the outstanding shares of capital stock or other equity interests of each of the Subsidiaries have been duly authorized and validly issued, are fully paid and non-assessable, have been issued in compliance with all applicable securities laws, were not issued in violation of any preemptive right, resale right, right of first refusal or similar right and, except as disclosed in the Disclosure Package and the Prospectus, are owned by the Company subject to no security interest, other encumbrance or adverse claims; and no options, warrants or other rights to purchase, agreements or other obligations to issue or other rights to convert any obligation into shares of capital stock or ownership interests in the Subsidiaries are outstanding;

(h) the Shares have been duly and validly authorized and, when issued and delivered against payment therefor as provided herein, will be duly and validly issued, fully paid and non-assessable and free of statutory and contractual preemptive rights, resale rights, rights of first refusal and similar rights; the Shares, when issued and delivered against payment therefor as provided herein, will be free of any restriction upon the voting or transfer thereof pursuant to the Company’s charter or bylaws or any agreement or other instrument to which the Company is a party;

(i) the Common Stock of the Company, including the Shares, conforms in all material respects to the description thereof contained or incorporated by reference in the Disclosure Package and the Prospectus;

(j) there is no franchise, contract or other document of a character required to be described in the Registration Statement or Prospectus, or to be filed as an exhibit thereto, which is not described or filed as required (and the Disclosure Package contains in all material respects the same description of the foregoing matters contained in the Prospectus);

(k) this Agreement has been duly authorized, executed and delivered by the Company;

(l) neither the Company nor any of the Subsidiaries is in breach or violation of or in default under (nor has any event occurred which, with notice, lapse of time or both, would result in any breach or violation of, constitute a default under or give the holder of any indebtedness (or a person acting on such holder’s behalf) the right to require the repurchase, redemption or repayment of all or a part of such indebtedness under) (i) its respective charter or bylaws, or (ii) any indenture, mortgage, deed of trust, bank loan or credit agreement or other evidence of indebtedness, or any license, lease, contract or other agreement or instrument to which it is a party or by which it or any of its properties may be bound or affected, or (iii) any federal, state,

local or foreign law, regulation or rule applicable to the Company or any of the Subsidiaries or any of their respective properties, or (iv) any rule or regulation of any self-regulatory organization or other non-governmental regulatory authority (including, without limitation, the rules and regulations of the NASDAQ) having jurisdiction over the Company or any of the Subsidiaries or any of their respective properties, or (v) any decree, judgment or order applicable to it or any of its properties, except, in the cases of clauses (ii), (iii), (iv) and (v), such breaches, violations, defaults, or rights that would not, individually or in the aggregate, have a Material Adverse Effect;

(m) the execution, delivery and performance of this Agreement by the Company, the issuance and sale of the Shares by the Company and the consummation by the Company of the transactions contemplated hereby will not conflict with, result in any breach or violation of or constitute a default under (nor constitute any event which, with notice, lapse of time or both, would result in any breach or violation of, constitute a default under or give the holder of any indebtedness (or a person acting on such holder’s behalf) the right to require the repurchase, redemption or repayment of all or a part of such indebtedness under) (or result in the creation or imposition of a lien, charge or encumbrance on any property or assets of the Company or any Subsidiary pursuant to) (i) the charter or bylaws of the Company or any of the Subsidiaries, or (ii) any indenture, mortgage, deed of trust, bank loan or credit agreement or other evidence of indebtedness, or any license, lease, contract or other agreement or instrument to which the Company or any of the Subsidiaries is a party or by which any of them or any of their respective properties may be bound or affected, or (iii) any federal, state, local or foreign law, regulation or rule applicable to the Company or any of the Subsidiaries or any of their respective properties, or (iv) any rule or regulation of any self-regulatory organization or other non-governmental regulatory authority (including, without limitation, the rules and regulations of the NASDAQ) having jurisdiction over the Company or any of the Subsidiaries or any of their respective properties, or (v) any decree, judgment or order applicable to the Company or any of the Subsidiaries or any of their respective properties; except, in the cases of clauses (ii), (iii), (iv) and (v) such breaches, violations, defaults, or rights that would not, individually or in the aggregate, have a Material Adverse Effect;

(n) no approval, authorization, consent or order of or filing with any federal, state, local or foreign governmental or regulatory commission, board, body, authority or agency, or of or with any self-regulatory organization or other non-governmental regulatory authority (including, without limitation, the NASDAQ), or approval of the stockholders of the Company, is required to be obtained or made by the Company in connection with the issuance and sale of the Shares by the Company or the consummation by the Company of the transactions contemplated hereby, other than (i) the registration of the Shares under the Act, which has been effected (or, with respect to any registration statement to be filed hereunder pursuant to Rule 462(b) under the Act, will be effected in accordance herewith), (ii) any necessary qualification under the securities or blue sky laws of the various jurisdictions in which the Shares are being offered by the Underwriters, (iii) under the Conduct Rules of FINRA, (iv) any listing applications or other notices required by the NASDAQ, (v) filings with the Commission pursuant to Rule 424(b) under the Act, or (vi) filings with the Commission on Form 8-K with respect to this Agreement;

(o) except as described in the Disclosure Package and the Prospectus, (i) no person has the right, contractual or otherwise, to cause the Company to issue or sell to it any shares of

Common Stock or shares of any other capital stock or other equity interests of the Company, (ii) no person has any preemptive rights, resale rights, rights of first refusal or other rights to purchase from the Company any shares of Common Stock or shares of any other capital stock of or other equity interests in the Company and (iii) no person has the right, contractual or otherwise, to cause the Company to register under the Act any shares of Common Stock or shares of any other capital stock of or other equity interests in the Company, or to include any such shares or interests in the Registration Statement or the offering contemplated thereby;

(p) except as described in the Disclosure Package and the Prospectus, (i) each of the Company and the Subsidiaries has all necessary licenses, authorizations, consents and approvals and has made all necessary filings required under any applicable law, regulation or rule, and has obtained all necessary licenses, authorizations, consents and approvals from other persons, in order to conduct their respective businesses as presently conducted and (ii) neither the Company nor any of the Subsidiaries is in violation of, or in default under, or has received notice of any proceedings relating to revocation or modification of, any such license, authorization, consent or approval or any federal, state, local or foreign law, regulation or rule or any decree, order or judgment applicable to the Company or any of the Subsidiaries, except with respect to clauses (i) and (ii), as would not, individually or in the aggregate, have a Material Adverse Effect;

(q) except as described in the Disclosure Package and the Prospectus, there are no actions, suits, claims, investigations or proceedings pending or, to the Company’s knowledge, threatened or contemplated to which the Company or any of the Subsidiaries or, to the best of the Company’s knowledge, any of their respective directors or officers, in their capacities as such, is, or would be, a party or of which any of their respective properties is, or would be, subject at law or in equity, before or by any federal, state, local or foreign governmental or regulatory commission, board, body, authority or agency, or before or by any self-regulatory organization or other non-governmental regulatory authority (including, without limitation, the NASDAQ) applicable to it, except any such action, suit, claim, investigation or proceeding which, if resolved adversely to the Company or any Subsidiary, would not, individually or in the aggregate, have a Material Adverse Effect;

(r) Deloitte & Touche LLP, whose report on the consolidated financial statements of the Company and the Subsidiaries is included or incorporated by reference in the Registration Statement, the Disclosure Package and the Prospectus, are independent registered public accountants with respect to the Company as required by the Act and by the rules of the Public Company Accounting Oversight Board;

(s) the financial statements included or incorporated by reference in the Registration Statement, the Disclosure Package and the Prospectus, together with the related notes and schedules, and the interactive data in eXtensible Business Reporting Language (“XBRL”) included or incorporated by reference in the Registration Statement, present fairly, in all material respects, the consolidated financial position of the Company and the Subsidiaries as of the dates indicated and the consolidated results of operations, cash flows and changes in stockholders’ equity of the Company and the Subsidiaries for the periods specified and have been prepared in compliance, in all material respects, with the requirements of the Act and the Exchange Act and in conformity with United States generally accepted accounting principles applied on a consistent basis during the periods involved (except as disclosed therein); the other financial and

statistical data of the Company contained or incorporated by reference in the Registration Statement, the Disclosure Package and the Prospectus, are accurately presented and prepared on a basis consistent with the financial statements and books and records of the Company; there are no financial statements (historical or pro forma) that are required to be included or incorporated by reference in the Registration Statement, the Disclosure Package and the Prospectus that are not included or incorporated by reference as required; the Company and the Subsidiaries do not have any material liabilities or obligations, direct or contingent (including any off-balance sheet obligations), not disclosed in the Registration Statement (excluding the exhibits thereto), the Disclosure Package and the Prospectus; and all disclosures contained or incorporated by reference in the Registration Statement, the Disclosure Package and the Prospectus, regarding “non-GAAP financial measures” (as such term is defined by the rules and regulations of the Commission), if any, comply with Regulation G of the Exchange Act and Item 10 of Regulation S-K under the Act, to the extent applicable;

(t) except as disclosed in the Disclosure Package and the Prospectus, each stock option granted under any equity incentive plan of the Company or any Subsidiary (each, a “Stock Plan”) was granted with a per share exercise price no less than the fair market value per share of Common Stock on the grant date of such option, and no such grant involved any “back-dating,” “forward-dating” or similar practice with respect to the effective date of such grant; except as would not, individually or in the aggregate, have a Material Adverse Effect, each such option (i) was granted in material compliance with applicable law and with the applicable Stock Plan(s), (ii) if granted to an officer of the Company, was duly approved by the board of directors (or a duly authorized committee thereof) of the Company, and (iii) has been properly accounted for in the Company’s financial statements in accordance with United States generally accepted accounting principles and disclosed in the Company’s filings with the Commission;

(u) between the latest date as of which information is given in the Registration Statement, the Disclosure Package and the Prospectus, and the time of purchase and each additional time of purchase, if any, in each case excluding any amendments or supplements to the foregoing made after the execution of this Agreement, there has not been (i) any event or circumstance that has or would reasonably be expected to have, individually or in the aggregate, a Material Adverse Effect, or (ii) any obligation or liability, direct or contingent (including any off-balance sheet obligations), incurred by the Company or any Subsidiary, which is material to the Company and the Subsidiaries taken as a whole;

(v) the Company has obtained for the benefit of the Underwriters the agreement (a “Lock-Up Agreement”), in the form set forth as Exhibit A hereto, of each of its directors and “officers” (within the meaning of Rule 16a-1(f) under the Exchange Act);

(w) neither the Company nor any Subsidiary is, and, solely after giving effect to the offering and sale of Shares and the application of the proceeds thereof as described in the Disclosure Package and the Prospectus, neither of them will be, an “investment company” as such term is defined in the Investment Company Act of 1940, as amended (the “Investment Company Act”);

(x) the Company and each of the Subsidiaries have good title to all property (real and personal, excluding for the purposes of this subsection (w), Intellectual Property (as defined

below)) owned by them which is material to the business of the Company and the Subsidiaries, taken as a whole, in each case, free and clear of all liens, claims, security interests or other encumbrances, except as disclosed in the Disclosure Package and the Prospectus and except as would not, individually or in the aggregate, have a Material Adverse Effect; all the property described in the Registration Statement, the Disclosure Package and the Prospectus, as being held under lease by the Company or a Subsidiary is held thereby under valid, subsisting and enforceable leases, except as would not, individually or in the aggregate, have a Material Adverse Effect;

(y) except as otherwise disclosed in the Disclosure Package and the Prospectus, the Company and the Subsidiaries own, or have obtained licenses for, or other rights to use, the inventions, patent applications, patents, trademarks (both registered and unregistered), trade names, service names, copyrights, trade secrets and other proprietary information described in the Disclosure Package and the Prospectus, as being owned or licensed by them or which are necessary for the conduct of their respective businesses as currently conducted (including the commercialization of products or services described in the Disclosure Package and the Prospectus, as currently under development) (collectively, “Intellectual Property”), except where the failure to own, license or have such rights would not, individually or in the aggregate, have a Material Adverse Effect. Except as otherwise disclosed in the Disclosure Package and the Prospectus and except as would not, individually or in the aggregate, have a Material Adverse Effect, (i) there are no third parties who have or, to the Company’s knowledge, will be able to establish rights to any Intellectual Property owned by the Company or any of the Subsidiaries (“Company Intellectual Property”), except for any third parties to whom the Company or any of the Subsidiaries has granted licenses to the Company Intellectual Property pursuant to written license agreements in the ordinary course of business; (ii) to the Company’s knowledge, there is no infringement by third parties of any Company Intellectual Property; (iii) there is no pending or, to the Company’s knowledge, threatened action, suit, proceeding or claim by others challenging the Company’s rights in or to any Intellectual Property, and the Company is unaware of any facts which could form a reasonable basis for any such action, suit, proceeding or claim; (iv) there is no pending or, to the Company’s knowledge, threatened action, suit, proceeding or claim by others challenging the validity, enforceability or scope of any Company Intellectual Property, and the Company is unaware of any facts which could form a reasonable basis for any such action, suit, proceeding or claim; (v) there is no pending or, to the Company’s knowledge, threatened action, suit, proceeding or claim by others that the Company or any Subsidiary infringes or otherwise violates, or would, upon the commercialization of any product or service described in the Disclosure Package and the Prospectus, as under development, infringe or violate, any patent, trademark, trade name, service name, copyright, trade secret or other proprietary rights of others, and the Company is unaware of any facts which could form a reasonable basis for any such action, suit, proceeding or claim; (vi) the Company and the Subsidiaries have complied with the terms of each agreement pursuant to which Intellectual Property has been licensed to the Company or any Subsidiary, and all such agreements are in full force and effect; (vii) there is no patent or, to the Company’s knowledge, patent application, that contains claims that interfere with the issued or pending claims of any patent or patent application included in the Company Intellectual Property or that challenges the validity, enforceability or scope of any patent included in the Company Intellectual Property; and (viii) the Company has disclosed to the United States Patent and Trademark Office all prior art within the possession of the Company that may render any patent application within the Company Intellectual Property unpatentable or the failure to disclose of which may render any patent issued thereon unenforceable;

(z) neither the Company nor any of the Subsidiaries is engaged in any unfair labor practice; except for matters which would not, individually or in the aggregate, have a Material Adverse Effect, (i) there is (A) no unfair labor practice complaint pending or, to the Company’s knowledge, threatened against the Company or any of the Subsidiaries before the National Labor Relations Board, and no grievance or arbitration proceeding arising out of or under collective bargaining agreements is pending or, to the Company’s knowledge, threatened, (B) no strike, labor dispute, slowdown or stoppage pending or, to the Company’s knowledge, threatened against the Company or any of the Subsidiaries and (C) no union representation dispute currently existing concerning the employees of the Company or any of the Subsidiaries, (ii) to the Company’s knowledge, no union organizing activities are currently taking place concerning the employees of the Company or any of the Subsidiaries and (iii) there has been no violation of any federal, state, local or foreign law relating to discrimination in the hiring, promotion or pay of employees, any applicable wage or hour laws or any provision of the Employee Retirement Income Security Act of 1974, as amended, or the rules and regulations promulgated thereunder concerning the employees of the Company or any of the Subsidiaries;

(aa) the Company and the Subsidiaries and their respective properties, assets and operations are in compliance with, and the Company and each of the Subsidiaries hold all permits, authorizations and approvals required under, Environmental Laws (as defined below), except to the extent that failure to so comply or to hold such permits, authorizations or approvals would not, individually or in the aggregate, have a Material Adverse Effect; except as disclosed in the Disclosure Package and the Prospectus, there are no past, present or, to the Company’s knowledge, reasonably anticipated future events, conditions, circumstances, activities, practices, actions, omissions or plans that would reasonably be expected to give rise to any material costs or liabilities to the Company or any Subsidiary under, or to interfere with or prevent compliance in all material respects by the Company or any Subsidiary with, Environmental Laws; except as would not, individually or in the aggregate, have a Material Adverse Effect, neither the Company nor any of the Subsidiaries (i) to the Company’s knowledge, is the subject of any investigation, (ii) has received any notice or claim, (iii) is a party to any pending or, to the Company’s knowledge, threatened action, suit or proceeding, (iv) to the Company’s knowledge, is affected by any pending or threatened action, suit or proceeding, (v) is bound by any judgment, decree or order or (vi) has entered into any agreement, in each case relating to any alleged violation of any Environmental Law or any actual or alleged release or threatened release or cleanup at any location of any Hazardous Materials (as defined below) (as used herein, “Environmental Law” means any applicable federal, state, local or foreign law, statute, ordinance, rule, regulation, order, decree, judgment, injunction, permit, license, authorization or other binding requirement, or common law, relating to health, safety or the protection, cleanup or restoration of the environment or natural resources, including those relating to the distribution, processing, generation, treatment, storage, disposal, transportation, other handling or release or threatened release of Hazardous Materials, and “Hazardous Materials” means any material (including, without limitation, pollutants, contaminants, hazardous or toxic substances or wastes) that is regulated by or may give rise to liability under any Environmental Law);

(bb) in the ordinary course of their business, the Company and each of the Subsidiaries conduct periodic reviews of the effect of the Environmental Laws on their respective businesses, operations and properties, in the course of which they identify and evaluate associated costs and liabilities (including, without limitation, any capital or operating expenditures required for cleanup, closure of properties or compliance with the Environmental Laws or any permit, license or approval, any related constraints on operating activities and any potential liabilities to third parties);

(cc) except as would not, individually or in the aggregate, have a Material Adverse Effect, the Company and each Subsidiary have timely filed all tax returns required to be filed, and all taxes and other assessments of a similar nature (whether imposed directly or through withholding) including any interest, additions to tax or penalties applicable thereto due or claimed in writing to be due from any such entity have been timely paid, other than those being contested in good faith and for which adequate reserves have been provided;

(dd) the Company and each of the Subsidiaries maintain insurance covering their respective properties, operations, personnel and businesses as the Company reasonably deems adequate; such insurance insures against such losses and risks to an extent which is adequate in accordance with customary industry practice to protect the Company and the Subsidiaries and their respective businesses; all such insurance is fully in force on the date hereof and will be fully in force at the time of purchase and each additional time of purchase, if any; neither the Company nor any Subsidiary has reason to believe that it will not be able to renew any such insurance as and when such insurance expires;

(ee) neither the Company nor any Subsidiary has sent or received any communication regarding termination of, or intent not to renew, any of the material contracts or agreements referred to or described in the Disclosure Package or the Prospectus, and no such termination or non-renewal has been threatened by the Company or any Subsidiary or, to the Company’s knowledge, any other party to any such contract or agreement;

(ff) the Company maintains a system of internal accounting controls sufficient to provide reasonable assurance that (i) transactions are executed in accordance with management’s general or specific authorization; (ii) transactions are recorded as necessary to permit preparation of financial statements in conformity with generally accepted accounting principles and to maintain accountability for assets; (iii) access to assets is permitted only in accordance with management’s general or specific authorization; and (iv) the recorded accountability for assets is compared with existing assets at reasonable intervals and appropriate action is taken with respect to any differences;

(gg) the Company has established and maintains and evaluates “disclosure controls and procedures” (as such term is defined in Rules 13a-15 and 15d-15 under the Exchange Act) and “internal control over financial reporting” (as such term is defined in Rules 13a-15 and 15d-15 under the Exchange Act); such disclosure controls and procedures are designed to ensure that material information relating to the Company, including its consolidated subsidiaries, is made known to the Company’s Chief Executive Officer and its Chief Financial Officer by others within those entities, and such disclosure controls and procedures are effective to perform the functions for which they were established; in connection with the preparation of the Company’s

most recent consolidated financial statements, the Company’s independent registered public accountants and the Audit Committee of the Board of Directors of the Company have been advised of: (i) all significant deficiencies, if any, in the design or operation of internal controls which could adversely affect the Company’s ability to record, process, summarize and report financial data; and (ii) all fraud, if any, whether or not material, that involves management or other employees who have a role in the Company’s internal controls; all “significant deficiencies” and “material weaknesses” (as such terms are defined in Rule 1-02(a)(4) of Regulation S-X under the Act) of the Company, if any, have been identified to the Company’s independent registered public accountants and are disclosed, to the extent required by the Act and the Exchange Act, in the Disclosure Package and the Prospectus; since the date of the most recent evaluation of such disclosure controls and procedures and internal controls, there have been no significant changes in internal controls or in other factors that could significantly affect internal controls, including any corrective actions with regard to significant deficiencies and material weaknesses; the principal executive officers (or their equivalents) and principal financial officers (or their equivalents) of the Company have made all certifications required by the Sarbanes-Oxley Act of 2002 (the “Sarbanes-Oxley Act”) and any related rules and regulations promulgated by the Commission, and the statements contained in each such certification are complete and correct; the Company, the Subsidiaries and the Company’s directors and officers are each in compliance in all material respects with all applicable effective provisions of the Sarbanes-Oxley Act and the rules and regulations of the Commission and the NASDAQ promulgated thereunder;

(hh) each “forward-looking statement” (within the meaning of Section 27A of the Act or Section 21E of the Exchange Act) contained or incorporated by reference in the Registration Statement, the Disclosure Package and the Prospectus, has been made or reaffirmed with a reasonable basis and in good faith;

(ii) all statistical or market-related data included or incorporated by reference in the Disclosure Package and the Prospectus, are based on or derived from sources that the Company reasonably believes to be reliable and accurate, and the Company has obtained the written consent to the use of such data from such sources to the extent required;

(jj) neither the Company nor any of the Subsidiaries nor, to the knowledge of the Company, any director, officer, agent, employee or affiliate of the Company or any of the Subsidiaries is aware of or has taken any action, directly or indirectly, that would result in a violation by such persons of the Foreign Corrupt Practices Act of 1977, as amended, and the rules and regulations thereunder; and the Company, the Subsidiaries and, to the knowledge of the Company, its affiliates have instituted and maintain policies and procedures designed to ensure continued compliance therewith;

(kk) the operations of the Company and the Subsidiaries are and have been conducted at all times in compliance with applicable financial recordkeeping and reporting requirements of the USA Patriot Act, the Bank Secrecy Act of 1970, as amended, the money laundering statutes of all jurisdictions applicable to the Company or the Subsidiaries, the rules and regulations thereunder and any related or similar rules, regulations or guidelines applicable to the Company or the Subsidiaries, issued, administered or enforced by any governmental agency (collectively, the “Money Laundering Laws”); and no action, suit or proceeding by or before any court or

governmental agency, authority or body or any arbitrator or non-governmental authority involving the Company or any of the Subsidiaries with respect to the Money Laundering Laws is pending or, to the Company’s knowledge, threatened;

(ll) neither the Company nor any of the Subsidiaries nor, to the knowledge of the Company, any director, officer, agent, employee or affiliate of the Company or any of the Subsidiaries is currently subject to any sanctions administered or enforced by the Office of Foreign Assets Control of the United States Treasury Department, the United Nations Security Council, the European Union, Her Majesty’s Treasury or any other relevant sanctions authority; and the Company will not directly or indirectly use the proceeds of the offering of the Shares contemplated hereby, or lend, contribute or otherwise make available such proceeds to any Subsidiary, joint venture partner or other person or entity for the purpose of financing the activities of any person currently subject to any United States sanctions administered or enforced by such authorities;

(mm) no Subsidiary is currently prohibited, directly or indirectly, from paying any dividends to the Company, from making any other distribution on such Subsidiary’s capital stock, from repaying to the Company any loans or advances to such Subsidiary from the Company or from transferring any of such Subsidiary’s property or assets to the Company or any other Subsidiary of the Company, except, in each case, as described in the Disclosure Package and the Prospectus or as would not result in a Material Adverse Effect;

(nn) the issuance and sale of the Shares to the Underwriters as contemplated hereby will not cause any holder of any shares of capital stock, securities convertible into or exchangeable or exercisable for capital stock or options, warrants or other rights to purchase capital stock or any other securities of the Company to have any right to acquire any shares of preferred stock of the Company;

(oo) the Company has not received any notice from the NASDAQ regarding the delisting of the Common Stock from the NASDAQ;

(pp) except pursuant to this Agreement, neither the Company nor any of the Subsidiaries has incurred any liability for any finder’s or broker’s fee or agent’s commission in connection with the execution and delivery of this Agreement or the consummation of the transactions contemplated hereby or by the Disclosure Package or the Prospectus;

(qq) neither the Company nor any of the Subsidiaries nor, to the Company’s knowledge, any of their respective directors, officers, affiliates or controlling persons has taken, directly or indirectly, any action designed to or that would reasonably be expected to cause or result in the stabilization or manipulation of the price of any security of the Company to facilitate the sale or resale of the Shares; and

(rr) Neither the Company nor any Subsidiary directly or indirectly controls, is controlled by, or is under common control with (within the meaning of FINRA 5121), or is an associated person (within the meaning of Article I, Section 1(rr) of the By-laws of FINRA) of, any member firm of FINRA.

In addition, any certificate signed by any officer of the Company or any of the Subsidiaries and delivered to any Underwriter or counsel for the Underwriters in connection with the offering of the Shares shall be deemed to be a representation and warranty by the Company, as to matters covered thereby, to each Underwriter.

4. Certain Covenants of the Company. The Company hereby agrees:

(a) to furnish such information as may be required and otherwise to cooperate in qualifying the Shares for offering and sale under the securities or blue sky laws of such states or other jurisdictions as you may designate and to maintain such qualifications in effect so long as required to permit the offer and sale of Shares in such jurisdiction; provided, however, that the Company shall not be required to qualify as a foreign corporation, to subject itself to taxation in any foreign jurisdiction or to consent to the service of process under the laws of any such jurisdiction (except service of process with respect to the offering and sale of the Shares); and to promptly advise you of the receipt by the Company of any notification with respect to the suspension of the qualification of the Shares for offer or sale in any jurisdiction or the initiation or threatening of any proceeding for such purpose;

(b) to make available to the Underwriters in New York City, as soon as practicable after this Agreement becomes effective, and thereafter from time to time to furnish to the Underwriters, as many copies of the Prospectus (or of the Prospectus as amended or supplemented if the Company shall have made any amendments or supplements thereto after the effective date of the Registration Statement) as the Underwriters may reasonably request for the purposes contemplated by the Act; in case any Underwriter is required to deliver (whether physically or through compliance with Rule 172 under the Act or any similar rule), in connection with the sale of the Shares, a prospectus after the nine-month period referred to in Section 10(a)(3) of the Act, the Company will prepare, at its expense, promptly upon request such amendment or amendments to the Registration Statement and the Prospectus as may be necessary to permit compliance with the requirements of Section 10(a)(3) of the Act;

(c) if, at the time this Agreement is executed and delivered, it is necessary for a post-effective amendment to the Registration Statement or a Registration Statement under Rule 462(b) under the Act to be filed with the Commission and become effective before the Shares may be sold, the Company will use its reasonable best efforts to cause such post-effective amendment or such Registration Statement to be filed and become effective, and will pay any applicable fees in accordance with the Act, as soon as possible; and the Company will advise you promptly and, if requested by you, will confirm such advice in writing, (i) when such post-effective amendment or such Registration Statement has become effective, and (ii) if Rule 430A under the Act is used, when the Prospectus is filed with the Commission pursuant to Rule 424(b) under the Act (which the Company agrees to file in a timely manner in accordance with such Rules);

request, to promptly file with the Commission a new registration statement under the Act relating to the Shares, or a post-effective amendment or supplement to the Registration Statement, which new registration statement or post-effective amendment or supplement shall comply with the requirements of the Act and shall be in a form reasonably satisfactory to you, (iii) use its reasonable best efforts to cause such new registration statement or post-effective amendment or supplement to become effective under the Act as soon as practicable, (iv) promptly notify you of such effectiveness and (v) take all other action necessary or appropriate to permit the public offering and sale of the Shares to continue as contemplated in the Prospectus; all references herein to the Registration Statement shall be deemed to include each such new registration statement or post-effective amendment or supplement, if any;

(e) if the third anniversary of the initial effective date of the Registration Statement (within the meaning of Rule 415(a)(5) under the Act) shall occur at any time during the period when a prospectus is required by the Act to be delivered (whether physically or through compliance with Rule 172 under the Act or any similar rule) in connection with any sale of Shares, to (i) upon your request, file with the Commission, prior to such third anniversary, a new registration statement under the Act relating to the Shares, which new registration statement shall comply with the requirements of the Act (including, without limitation, Rule 415(a)(6) under the Act) and shall be in a form reasonably satisfactory to you; and (ii) use its reasonable best efforts to cause such new registration statement to become effective under the Act as soon as practicable, but in any event within 180 days after such third anniversary and promptly notify you of such effectiveness; the Company shall take all other action necessary or appropriate to permit the public offering and sale of the Shares to continue as contemplated in the Prospectus; all references herein to the Registration Statement shall be deemed to include each such new registration statement, if any;

(f) to advise you promptly, confirming such advice in writing, of any request by the Commission for amendments or supplements to the Registration Statement, any Pre-Pricing Prospectus, the Prospectus or any Permitted Free Writing Prospectus or for additional information with respect thereto, or of notice of institution of proceedings for, or the entry of a stop order, suspending the effectiveness of the Registration Statement and, if the Commission should enter a stop order suspending the effectiveness of the Registration Statement, to use its reasonable best efforts to obtain the lifting or removal of such order as soon as possible; to advise you promptly of any proposal to amend or supplement the Registration Statement, any Pre-Pricing Prospectus or the Prospectus, and to provide you and Underwriters’ counsel copies of any such documents for review and comment a reasonable amount of time prior to any proposed filing and to file no such amendment or supplement to which you shall reasonably object in writing;

pursuant to Section 13, 14 or 15(d) of the Exchange Act during such period a reasonable amount of time prior to any proposed filing, and, except as reasonably determined by Company counsel to be required by law, to file no such report, statement or document to which you shall have reasonably objected in writing; and to promptly notify you of such filing;

(h) to advise the Underwriters promptly of the happening of any event known to the Company within the period during which a prospectus is required by the Act to be delivered (whether physically or through compliance with Rule 172 under the Act or any similar rule) in connection with any sale of Shares, which event would require the making of any change in the Prospectus then being used so that the Prospectus would not include an untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they are made, not misleading, and to advise the Underwriters promptly if, during such period, it shall become necessary to amend or supplement the Prospectus to cause the Prospectus to comply with the requirements of the Act, and, in each case, during such time, subject to Section 4(f) hereof, to prepare and furnish, at the Company’s expense, to the Underwriters promptly such amendments or supplements to such Prospectus as may be necessary to reflect any such change or to effect such compliance;

(i) to make generally available to its security holders, and if not available on the Commission’s Electronic Data Gathering, Analysis, and Retrieval system (“EDGAR”), to deliver to you, an earnings statement of the Company (which will satisfy the provisions of Section 11(a) of the Act) covering a period of twelve months beginning after the effective date of the Registration Statement (as defined in Rule 158(c) under the Act) as soon as is reasonably practicable after the termination of such twelve-month period but in any case not later than August 9, 2013;

(j) to furnish to you ten copies of the Registration Statement, as initially filed with the Commission, and of all amendments thereto (including all exhibits thereto) and sufficient copies of the foregoing (other than exhibits) for distribution of a copy to each of the other Underwriters; provided, however, that the Company shall not be required to furnish any materials pursuant to this clause (j) if such materials are available on EDGAR;

(k) if requested by you, to furnish to you as early as practicable prior to the time of purchase and any additional time of purchase, as the case may be, but not later than two business days prior thereto, a copy of the latest available unaudited interim and monthly consolidated financial statements, if any, of the Company and the Subsidiaries which have been read by the Company’s independent registered public accountants, as stated in their letter to be furnished pursuant to Section 6(c) hereof; provided, however, that the Company shall not be required to furnish any materials pursuant to this clause (k) if such materials are available on EDGAR;

(l) to apply the net proceeds from the sale of the Shares in the manner set forth under the caption “Use of proceeds” in the Prospectus;

the Underwriters and to dealers (including costs of mailing and shipment), (ii) the registration, issue, sale and delivery of the Shares including any stock or transfer taxes and stamp or similar duties payable upon the sale, issuance or delivery of the Shares to the Underwriters, (iii) the qualification of the Shares for offering and sale under state or foreign laws and the determination of their eligibility for investment under state or foreign law (including the reasonable legal fees and the filing fees and other disbursements of counsel for the Underwriters incurred in connection with such qualifications and determinations) and the printing and furnishing of copies of any blue sky surveys or legal investment surveys to the Underwriters and to dealers, (iv) any listing of the Shares on any securities exchange or qualification of the Shares for quotation on the NASDAQ and any registration thereof under the Exchange Act, (v) any filing for review of the public offering of the Shares by FINRA, including the reasonable legal fees and the filing fees and other disbursements of counsel to the Underwriters relating to FINRA matters, (vi) the fees and disbursements of any transfer agent or registrar for the Shares, (vii) the costs and expenses of the Company relating to presentations or meetings undertaken in connection with the marketing of the offering and sale of the Shares to prospective investors and the Underwriters’ sales forces, 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, lodging and other expenses incurred by the officers of the Company and any such consultants, and the cost of any aircraft chartered in connection with the road show, (viii) the performance of the Company’s other obligations hereunder and (ix) all other reasonable out-of-pocket costs and expenses of the several Underwriters incident to the performance of their obligations hereunder (including fees and disbursements of their legal counsel) not otherwise specifically provided for herein (such costs and expenses in this subsection (ix) are referred to as the “Reimbursable Expenses”); provided, however, that the Reimbursable Expenses shall be limited to $150,000 in the aggregate and shall be paid to the Underwriters at the time of purchase.

(n) to comply with Rule 433(d) under the Act (without reliance on Rule 164(b) under the Act) and with Rule 433(g) under the Act;

whether any such transaction is to be settled by delivery of Common Stock or such other securities, in cash or otherwise or (iv) publicly announce an intention to effect any transaction specified in clause (i), (ii) or (iii), except, in each case, for (A) the registration of the offer and sale of the Shares as contemplated by this Agreement, (B) issuances of Common Stock upon the exercise of options or warrants disclosed as outstanding in the Registration Statement (excluding the exhibits thereto), the Disclosure Package and the Prospectus, (C) the issuance of Common Stock or any equity awards (including the issuance of Common Stock upon exercise or settlement of such equity awards) pursuant to the Company’s equity incentive plans, employee stock purchase plan or other employee compensation plans as such plans are in existence on the date hereof and described in the Registration Statement (excluding the exhibits thereto), the Disclosure Package and the Prospectus, (D) the filing of registration statements on Form S-8 relating to shares of Common Stock which may be issued pursuant to existing equity incentive plans, employee stock purchase plans or other employee compensation plans disclosed in the Disclosure Package and the Prospectus, (E) the registration under the Act and issuance and sale by the Company of shares of Common Stock in connection with any acquisitions or strategic investments by the Company or any of its Subsidiaries as long as (i) the aggregate amount of any such shares does not exceed 15% of the number of shares of Common Stock outstanding immediately after the issuance and sale of the Shares contemplated by the Registration Statement and (ii) each of the recipients of any such shares execute a Lock-Up Agreement for the remainder of the Lock-Up Period, and (F) the issuance of up to $45,000,000 aggregate principal amount of 7.50% convertible notes due 2022 (the “Convertible Notes”) and the issuance of shares of Common Stock upon conversion of the Convertible Notes; provided, however, that if (a) during the period that begins on the date that is fifteen (15) calendar days plus three (3) business days before the last day of the Lock-Up Period and ends on the last day of the Lock-Up Period, the Company issues an earnings release or material news or a material event relating to the Company occurs; or (b) prior to the expiration of the Lock-Up Period, the Company announces that it will release earnings results during the sixteen (16) day period beginning on the last day of the Lock-Up Period, then the restrictions imposed by this Section 4(n) shall continue to apply until the expiration of the date that is fifteen (15) calendar days plus three (3) business days after the date on which the issuance of the earnings release or the material news or material event occurs;

(p) prior to the time of purchase, except as required by law, to issue no press release or other communication, directly or indirectly, and hold no press conferences with respect to the Company or any Subsidiary, the financial condition, results of operations, business, properties, assets, or liabilities of the Company or any Subsidiary, or the offering of the Shares, without your prior consent (such consent not to be unreasonably withheld);

(q) not, at any time at or after the execution of this Agreement, to, directly or indirectly, offer or sell any Shares by means of any “prospectus” (within the meaning of the Act), or use any “prospectus” (within the meaning of the Act) in connection with the offer or sale of the Shares, in each case other than the Prospectus and each Permitted Free Writing Prospectus;

(r) not to, and to cause the Subsidiaries not to, take, directly or indirectly, any action designed, or which will constitute, or has constituted, or would reasonably be expected to cause or result in the stabilization or manipulation of the price of any security of the Company to facilitate the sale or resale of the Shares;

(s) to use its reasonable best efforts to cause the Shares to be listed for quotation on the NASDAQ and to maintain such listing for quotation on the NASDAQ; and

(t) to maintain a transfer agent and, if necessary under the jurisdiction of incorporation of the Company, a registrar for the Common Stock.

5. Reimbursement of the Underwriters’ Expenses. If, after the execution and delivery of this Agreement, the Shares are not delivered for any reason other than the termination of this Agreement pursuant to the fifth paragraph of Section 8 hereof or the default by one or more of the Underwriters in its or their respective obligations hereunder, the Company shall, in addition to paying the amounts described in Section 4(l) hereof, reimburse the Underwriters for all of their reasonably incurred out-of-pocket expenses, including the reasonable fees and disbursements of their counsel. Except as set forth in Section 4(l), Section 9 and this Section 5, the Underwriters will bear all of their own costs and expenses, including the fees and disbursements of their counsel and any stock transfer taxes applicable to the resale of any Shares by them.

6. Conditions of the Underwriters’ Obligations. The several obligations of the Underwriters hereunder are subject to the accuracy of the representations and warranties on the part of the Company on the date hereof, at the time of purchase and, if applicable, at the additional time of purchase, the performance by the Company of its obligations, in all material respects, hereunder and to the following additional conditions precedent:

(a) The Company shall furnish to you at the time of purchase and, if applicable, at the additional time of purchase, an opinion of Paul Hastings LLP, counsel for the Company, addressed to the Underwriters, and dated the time of purchase or the additional time of purchase, as the case may be, with executed copies for each Underwriter, and in form and substance satisfactory to the Managing Underwriters, in the form set forth in Exhibit B hereto.

(b) The Company shall furnish to you at the time of purchase and, if applicable, at the additional time of purchase, an opinion of Cooley LLP, special counsel for the Company with respect to patents and proprietary rights, addressed to the Underwriters, and dated the time of purchase or the additional time of purchase, as the case may be, with executed copies for each Underwriter, and in form and substance satisfactory to the Managing Underwriters, in the form set forth in Exhibit C hereto.

(c) You shall have received from Deloitte & Touche LLP letters dated, respectively, the date of this Agreement, the date of the Prospectus, the time of purchase and, if applicable, the additional time of purchase, and addressed to the Underwriters (with executed copies for each Underwriter) in the forms satisfactory to the Managing Underwriters, which letters shall cover, without limitation, the various financial disclosures contained in the Disclosure Package and the Prospectus.

(d) You shall have received at the time of purchase and, if applicable, at the additional time of purchase, the favorable opinion of Covington & Burling LLP, counsel for the Underwriters, dated the time of purchase or the additional time of purchase, as the case may be, in form and substance reasonably satisfactory to the Managing Underwriters.

(e) No Prospectus or amendment or supplement to the Registration Statement or the Prospectus shall have been filed to which you shall have objected in writing.

(f) The Registration Statement and any registration statement required to be filed, prior to the sale of the Shares, under the Act pursuant to Rule 462(b) shall have been filed and shall have become effective under the Act. The Prospectus shall have been filed with the Commission pursuant to Rule 424(b) under the Act at or before 5:30 P.M., New York City time, on the second full business day after the date of this Agreement (or such earlier time as may be required under the Act).

(g) Prior to and at the time of purchase, and, if applicable, the additional time of purchase, (i) no stop order with respect to the effectiveness of the Registration Statement shall have been issued under the Act or proceedings initiated under Section 8(d) or 8(e) of the Act; (ii) the Registration Statement and all amendments thereto shall not contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading; (iii) none of the Pre-Pricing Prospectuses or the Prospectus, and no amendment or supplement thereto, shall include an untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they are made, not misleading; (iv) no Disclosure Package, and no amendment or supplement thereto, shall include an untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they are made, not misleading; and (v) none of the Permitted Free Writing Prospectuses, if any, shall include an untrue statement of a material fact or, together with the Disclosure Package including the then most recent Pre-Pricing Prospectus, omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they are made, not misleading.

(h) The Company will, at the time of purchase and, if applicable, at the additional time of purchase, deliver to you a certificate of its Chief Executive Officer and its Chief Financial Officer, dated the time of purchase or the additional time of purchase, as the case may be, in the form attached as Exhibit D hereto.

(i) You shall have received each of the signed Lock-Up Agreements referred to in Section 3(v) hereof.

(j) The Company shall have furnished to you such other documents and certificates as to the accuracy and completeness in all material respects of any statement in the Registration Statement, any Pre-Pricing Prospectus, the Prospectus or any Permitted Free Writing Prospectus as of the time of purchase and, if applicable, the additional time of purchase, as you may reasonably request.

(k) The Company shall have filed a listing of additional shares notification with the NASDAQ in connection with the sale and issuance of the Shares, and shall have received no objections thereto from the NASDAQ.

(l) FINRA shall not have raised any objection with respect to the fairness or reasonableness of the underwriting, or other arrangements of the transactions, contemplated hereby.

7. Effective Date of Agreement; Termination. This Agreement shall become effective when the parties hereto have executed and delivered this Agreement.

The obligations of the several Underwriters hereunder shall be subject to termination in the absolute discretion of the Managing Underwriters, if (a) since the time of execution of this Agreement or the earlier respective dates as of which information is given in the Disclosure Package and the Prospectus, there has been any change or any development involving a prospective change in the business, properties, management, condition (financial or otherwise) or results of operations of the Company and the Subsidiaries taken as a whole, the effect of which change or development is, in the sole judgment of the Managing Underwriters, so material and adverse as to make it impractical or inadvisable to proceed with the public offering or the delivery of the Shares on the terms and in the manner contemplated in the Disclosure Package and the Prospectus, or (b) since the time of execution of this Agreement, there shall have occurred: (i) a suspension or material limitation in trading in securities generally on the NYSE, the American Stock Exchange or the NASDAQ; (ii) a suspension or material limitation in trading in the Company’s securities on the NASDAQ; (iii) a general moratorium on commercial banking activities declared by either federal or New York State authorities or a material disruption in commercial banking or securities settlement or clearance services in the United States; (iv) an outbreak or escalation of hostilities or acts of terrorism involving the United States or a declaration by the United States of a national emergency or war; or (v) any other calamity or crisis or any change in financial, political or economic conditions in the United States or elsewhere, if the effect of any such event specified in clause (iv) or (v), in the sole judgment of the Managing Underwriters, makes it impractical or inadvisable to proceed with the public offering or the delivery of the Shares on the terms and in the manner contemplated in the Disclosure Package and the Prospectus.

If the Managing Underwriters elect to terminate this Agreement as provided in this Section 7, the Company and each other Underwriter shall be notified promptly in writing.

If the sale to the Underwriters of the Shares, as contemplated by this Agreement, is not carried out by the Underwriters for any reason permitted under this Agreement, or if such sale is not carried out because the Company shall be unable to comply with any of the terms of this Agreement, the Company shall not be under any obligation or liability under this Agreement (except to the extent provided in Sections 4(l), 5 and 9 hereof), and the Underwriters shall be under no obligation or liability to the Company under this Agreement (except to the extent provided in Section 9 hereof) or to one another hereunder.

8. Increase in Underwriters’ Commitments. Subject to Sections 6 and 7 hereof, if any Underwriter shall default in its obligation to take up and pay for the Firm Shares to be purchased by it hereunder (otherwise than for a failure of a condition set forth in Section 6 hereof or a reason sufficient to justify the termination of this Agreement under the provisions of Section 7 hereof) and if the number of Firm Shares which all Underwriters so defaulting shall have agreed but failed to take up and pay for does not exceed 10% of the total number of Firm Shares, the

non-defaulting Underwriters (including the Underwriters, if any, substituted in the manner set forth below) shall take up and pay for (in addition to the aggregate number of Firm Shares they are obligated to purchase pursuant to Section 1 hereof) the number of Firm Shares agreed to be purchased by all such defaulting Underwriters, as hereinafter provided. Such Shares shall be taken up and paid for by such non-defaulting Underwriters in such amount or amounts as you may designate with the consent of each Underwriter so designated or, in the event no such designation is made, such Shares shall be taken up and paid for by all non-defaulting Underwriters pro rata in proportion to the aggregate number of Firm Shares set forth opposite the names of such non-defaulting Underwriters in Schedule A.

Without relieving any defaulting Underwriter from its obligations hereunder, the Company agrees with the non-defaulting Underwriters that they will not sell any Firm Shares hereunder unless all of the Firm Shares are purchased by the Underwriters (or by substituted Underwriters selected by you with the approval of the Company or selected by the Company with your approval).

If a new Underwriter or Underwriters are substituted by the Underwriters or by the Company for a defaulting Underwriter or Underwriters in accordance with the foregoing provision, the Company or you shall have the right to postpone the time of purchase for a period not exceeding five business days in order that any necessary changes in the Registration Statement and the Prospectus and other documents may be effected.

The term “Underwriter” as used in this Agreement shall refer to and include any Underwriter substituted under this Section 8 with like effect as if such substituted Underwriter had originally been named in Schedule A hereto.

If the aggregate number of Firm Shares which the defaulting Underwriter or Underwriters agreed to purchase exceeds 10% of the total number of Firm Shares which all Underwriters agreed to purchase hereunder, and if neither the non-defaulting Underwriters nor the Company shall make arrangements within the five business day period stated above for the purchase of all the Firm Shares which the defaulting Underwriter or Underwriters agreed to purchase hereunder, this Agreement shall terminate without further act or deed and without any liability on the part of the Company to any Underwriter and without any liability on the part of any non-defaulting Underwriter to the Company. Nothing in this paragraph, and no action taken hereunder, shall relieve any defaulting Underwriter from liability in respect of any default of such Underwriter under this Agreement.

9. Indemnity and Contribution.

(a) The Company agrees to indemnify, defend and hold harmless each Underwriter, its partners, agents, directors, officers and members, any person who controls any Underwriter within the meaning of Section 15 of the Act or Section 20 of the Exchange Act, and any “affiliate” (within the meaning of Rule 405 under the Act) of such Underwriter, and the successors and assigns of all of the foregoing persons, from and against any loss, damage, expense, liability or claim (including the reasonable cost of investigation) which, jointly or severally, any such Underwriter or any such person may incur under the Act, the Exchange Act, the common law or otherwise, insofar as such loss, damage, expense, liability or claim arises out

of or is based upon (i) any untrue statement or alleged untrue statement of a material fact contained in the Registration Statement or arises out of or is based upon any omission or alleged omission to state a material fact required to be stated therein or necessary to make the statements therein not misleading, except insofar as any such loss, damage, expense, liability or claim arises out of or is based upon any untrue statement or alleged untrue statement of a material fact contained in, and in conformity with information concerning such Underwriter furnished in writing by or on behalf of such Underwriter through you to the Company expressly for use in, the Registration Statement or arises out of or is based upon any omission or alleged omission to state a material fact in the Registration Statement in connection with such information, which material fact was not contained in such information and which material fact was required to be stated in such Registration Statement or was necessary to make such information not misleading or (ii) any untrue statement or alleged untrue statement of a material fact included in any Prospectus (the term Prospectus for the purpose of this Section 9 being deemed to include any Basic Prospectus, any Pre-Pricing Prospectus, the Prospectus Supplement, the Prospectus and any amendments or supplements to the foregoing), in any Covered Free Writing Prospectus, in any “issuer information” (as defined in Rule 433 under the Act) of the Company, which “issuer information” is required to be, or is, filed with the Commission, or in any Prospectus together with any combination of one or more of the Covered Free Writing Prospectuses, if any, or arises out of or is based upon any omission or alleged omission 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, except, with respect to such Prospectus or any Permitted Free Writing Prospectus, insofar as any such loss, damage, expense, liability or claim arises out of or is based upon any untrue statement or alleged untrue statement of a material fact contained in, and in conformity with information concerning such Underwriter furnished in writing by or on behalf of such Underwriter through you to the Company expressly for use in, such Prospectus or Permitted Free Writing Prospectus or arises out of or is based upon any omission or alleged omission to state a material fact in such Prospectus or Permitted Free Writing Prospectus in connection with such information, which material fact was not contained in such information and which material fact was necessary in order to make the statements in such information, in the light of the circumstances under which they were made, not misleading, and will reimburse each Underwriter “indemnified party” (defined below) for any legal or other fees or expenses actually and reasonably incurred by such indemnified party in connection with investigating or defending against any loss, damage, expense, liability, claim, action, litigation, investigation or proceeding whatsoever (whether or not such indemnified party is a party thereto), whether threatened or commenced, and in connection with the enforcement of this provision with respect to the above as such fees and expenses are incurred.

(b) Each Underwriter severally agrees to indemnify, defend and hold harmless the Company, its directors and officers, and any person who controls the Company within the meaning of Section 15 of the Act or Section 20 of the Exchange Act, and the successors and assigns of all of the foregoing persons, from and against any loss, damage, expense, liability or claim (including the reasonable cost of investigation) which, jointly or severally, the Company or any such person may incur under the Act, the Exchange Act, the common law or otherwise, insofar as such loss, damage, expense, liability or claim arises out of or is based upon (i) any untrue statement or alleged untrue statement of a material fact contained in, and in conformity with information concerning such Underwriter furnished in writing by or on behalf of such Underwriter through you to the Company expressly for use in, the Registration Statement (or in

the Registration Statement as amended by any post-effective amendment thereof by the Company), or arises out of or is based upon any omission or alleged omission to state a material fact in such Registration Statement in connection with such information, which material fact was not contained in such information and which material fact was required to be stated in such Registration Statement or was necessary to make such information not misleading or (ii) any untrue statement or alleged untrue statement of a material fact contained in, and in conformity with information concerning such Underwriter furnished in writing by or on behalf of such Underwriter through you to the Company expressly for use in, a Prospectus or a Permitted Free Writing Prospectus, or arises out of or is based upon any omission or alleged omission to state a material fact in such Prospectus or Permitted Free Writing Prospectus in connection with such information, which material fact was not contained in such information and which material fact was necessary in order to make the statements in such information, in the light of the circumstances under which they were made, not misleading.

(c) If any action, suit or proceeding (each, a “Proceeding”) is brought against a person (an “indemnified party”) in respect of which indemnity may be sought against the Company or an Underwriter (as applicable, the “indemnifying party”) pursuant to subsection (a) or (b), respectively, of this Section 9, such indemnified party shall promptly notify such indemnifying party in writing of the institution of such Proceeding and such indemnifying party shall assume the defense of such Proceeding, including the employment of counsel reasonably satisfactory to such indemnified party and payment of all fees and expenses of such indemnified party’s counsel; provided, however, that the omission to so notify such indemnifying party shall not relieve such indemnifying party from any liability which such indemnifying party may have to any indemnified party or otherwise. The indemnified party or parties shall have the right to employ its or their own counsel in any such case, but the fees and expenses of such counsel shall be at the expense of such indemnified party or parties unless the employment of such counsel shall have been authorized in writing by the indemnifying party in connection with the defense of such Proceeding or the indemnifying party shall not have, within a reasonable period of time in light of the circumstances, employed counsel to defend such Proceeding or such indemnified party or parties shall have reasonably concluded, that there may be defenses available to it or them which are different from, additional to or in conflict with those available to such indemnifying party (in which case such indemnifying party shall not have the right to direct the defense of such Proceeding on behalf of the indemnified party or parties), in any of which events such fees and expenses shall be borne by such indemnifying party and paid as incurred (it being understood, however, that such indemnifying party shall not be liable for the expenses of more than one separate counsel (in addition to any local counsel) in any one Proceeding or series of related Proceedings in the same jurisdiction representing the indemnified parties who are parties to such Proceeding). The indemnifying party shall not be liable for any settlement of any Proceeding effected without its written consent but, if settled with its written consent, such indemnifying party agrees to indemnify and hold harmless the indemnified party or parties from and against any loss or liability by reason of such settlement. Notwithstanding the foregoing sentence, if at any time an indemnified party shall have requested an indemnifying party to reimburse the indemnified party for fees and expenses of counsel as contemplated by the second sentence of this Section 9(c), then the indemnifying party agrees that it shall be liable for any settlement of any Proceeding effected without its written consent if (i) such settlement is entered into more than 60 business days after receipt by such indemnifying party of the aforesaid request for reimbursement of fees and expenses of counsel in accordance with this Agreement, (ii) such

indemnifying party shall not have fully reimbursed the indemnified party in accordance with such request prior to the date of such settlement and (iii) such indemnified party shall have given the indemnifying party at least 30 days’ prior notice of its intention to settle. No indemnifying party shall, without the prior written consent of the indemnified party, effect any settlement of any pending or threatened Proceeding in respect of which any indemnified party is or could have been a party and indemnity could have been sought hereunder by such indemnified party, unless such settlement includes an unconditional release of such indemnified party from all liability on claims that are the subject matter of such Proceeding and does not include an admission of fault or culpability or a failure to act by or on behalf of such indemnified party.

(d) If the indemnification provided for in this Section 9 is unavailable to an indemnified party under subsections (a) and (b) of this Section 9 or insufficient to hold an indemnified party harmless in respect of any losses, damages, expenses, liabilities or claims referred to therein, then each applicable indemnifying party shall contribute to the amount paid or payable by such indemnified party as a result of such losses, damages, expenses, liabilities or claims (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 Shares or (ii) if the allocation provided by clause (i) above is not permitted by applicable law, in such proportion as is appropriate to reflect not only the relative benefits referred to in clause (i) above but also the relative fault of the Company on the one hand and of the Underwriters on the other in connection with the statements or omissions which resulted in such losses, damages, expenses, liabilities or claims, 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 shall be deemed to be in the same respective proportions as the total proceeds from the offering (net of underwriting discounts and commissions but before deducting expenses) received by the Company, and the total underwriting discounts and commissions received by the Underwriters, bear to the aggregate public offering price of the Shares. The relative fault of the Company on the one hand and of the Underwriters on the other shall be determined by reference to, among other things, whether the untrue statement or alleged untrue statement of a material fact or omission or alleged omission 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 amount paid or payable by a party as a result of the losses, damages, expenses, liabilities and claims referred to in this subsection shall be deemed to include any legal or other fees or expenses reasonably incurred by such party in connection with investigating, preparing to defend or defending any Proceeding.

(e) The Company and the Underwriters agree that it would not be just and equitable if contribution pursuant to this Section 9 were determined by pro rata allocation (even if the Underwriters were treated as one entity for such purpose) or by any other method of allocation that does not take account of the equitable considerations referred to in subsection (d) above. Notwithstanding the provisions of this Section 9, no Underwriter shall be required to contribute any amount in excess of the amount by which the total price at which the Shares underwritten by such Underwriter and distributed to the public were offered to the public exceeds the amount of any damage which such Underwriter has otherwise been required to pay by reason of such untrue statement or alleged untrue statement or omission or alleged omission. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Act) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation. The Underwriters’ obligations to contribute pursuant to this Section 9 are several in proportion to their respective underwriting commitments and not joint.

(f) The indemnity and contribution agreements contained in this Section 9 and the covenants, warranties and representations of the Company contained in this Agreement shall remain in full force and effect regardless of any investigation made by or on behalf of any Underwriter, or any of their respective partners, agents, directors, officers or members or any person (including each partner, officer, director or member of such person) who controls any Underwriter within the meaning of Section 15 of the Act or Section 20 of the Exchange Act, or by or on behalf of the Company, its directors or officers or any person who controls the Company within the meaning of Section 15 of the Act or Section 20 of the Exchange Act, and shall survive any termination of this Agreement or the issuance and delivery of the Shares. The Company and each Underwriter agree promptly to notify each other of the commencement of any Proceeding against it and, in the case of the Company, against any of the Company’s officers or directors in connection with the issuance and sale of the Shares, or in connection with the Registration Statement, any Basic Prospectus, any Pre-Pricing Prospectus, the Prospectus Supplement, the Prospectus or any Permitted Free Writing Prospectus.

10. Information Furnished by the Underwriters. The statements set forth in the last paragraph on the cover page of the Prospectus, the selling concession appearing in the first paragraph under the heading “Commissions and Discounts” under the caption “Underwriting” in the Prospectus and the statements set forth in the paragraphs under the heading “Price Stabilization, Short Positions” under the caption “Underwriting” in the Prospectus, only insofar as such statements relate to the amount of selling concession and reallowance or to over-allotment and stabilization activities that may be undertaken by the Underwriters, constitute the only information furnished by or on behalf of the Underwriters, as such information is referred to in Sections 3 and 9 hereof.

11. Notices. Except as otherwise herein provided, all statements, requests, notices and agreements shall be in writing or by telegram or facsimile and, if to the Underwriters, shall be sufficient in all respects if delivered or sent to (i) UBS Securities LLC, 1285 Avenue of the Americas, New York, New York 10019, Attention: Syndicate / Michael Ryan (fax: (212) 713-3371), (ii) Piper Jaffray & Co., 800 Nicollet Mall, Suite 800, Minneapolis, MN 55402, Attention: Equity Capital Markets (facsimile: (612) 313-3121) and Attention: Legal Department (facsimile: (612) 303 6000); and if to the Company, shall be sufficient in all respects if delivered or sent to the Company at the offices of the Company at 345 Inverness Drive South, Building C, Suite 310, Englewood, CO 80112, (facsimile: (303) 858-8431), Attention: Patrick R. Gruber, Chief Executive Officer.

12. Governing Law; Construction. This Agreement and any claim, counterclaim or dispute of any kind or nature whatsoever arising out of or in any way relating to this Agreement (“Claim”), directly or indirectly, shall be governed by, and construed in accordance with, the laws of the State of New York. The section headings in this Agreement have been inserted as a matter of convenience of reference and are not a part of this Agreement.

13. Submission to Jurisdiction. Except as set forth below, no Claim may be commenced, prosecuted or continued in any court other than the courts of the State of New York located in

the City and County of New York or in the United States District Court for the Southern District of New York, which courts shall have exclusive jurisdiction over the adjudication of such matters, and the Company consents to the jurisdiction of such courts and personal service with respect thereto. The Company hereby consents to personal jurisdiction, service and venue in any court in which any Claim arising out of or in any way relating to this Agreement is brought by any third party against any Underwriter or any indemnified party. Each Underwriter and the Company (on its behalf and, to the extent permitted by applicable law, on behalf of its stockholders and affiliates) waive all right to trial by jury in any action, proceeding or counterclaim (whether based upon contract, tort or otherwise) in any way arising out of or relating to this Agreement. The Company agrees that a final judgment in any such action, proceeding or counterclaim brought in any such court shall be conclusive and binding upon the Company and may be enforced in any other courts to the jurisdiction of which the Company is or may be subject, by suit upon such judgment.

14. Parties at Interest. The Agreement herein set forth has been and is made solely for the benefit of the Underwriters and the Company and to the extent provided in Section 9 hereof the controlling persons, partners, agents, directors, officers, members and affiliates referred to in such Section, and their respective successors, assigns, heirs, personal representatives and executors and administrators. No other person, partnership, association or corporation (including a purchaser, as such purchaser, from any of the Underwriters) shall acquire or have any right under or by virtue of this Agreement.

15. No Fiduciary Relationship. The Company hereby acknowledges that the Underwriters are acting solely as underwriters in connection with the purchase and sale of the Company’s securities. The Company further acknowledges that the Underwriters are acting pursuant to a contractual relationship created solely by this Agreement entered into on an arm’s length basis, and in no event do the parties intend that the Underwriters act or be responsible as a fiduciary to the Company, its management, stockholders or creditors or any other person in connection with any activity that the Underwriters may undertake or have undertaken in furtherance of the purchase and sale of the Company’s securities, either before or after the date hereof. The Underwriters hereby expressly disclaim any fiduciary or similar obligations to the Company, either in connection with the transactions contemplated by this Agreement or any matters leading up to such transactions, and the Company hereby confirms its understanding and agreement to that effect. The Company and the Underwriters agree that they are each responsible for making their own independent judgments with respect to any such transactions and that any opinions or views expressed by the Underwriters to the Company regarding such transactions, including, but not limited to, any opinions or views with respect to the price or market for the Company’s securities, do not constitute advice or recommendations to the Company. The Company and the Underwriters agree that the Underwriters are acting as principal and not the agent or fiduciary of the Company and no Underwriter has assumed, and none of them will assume, any advisory responsibility in favor of the Company with respect to the transactions contemplated hereby or the process leading thereto (irrespective of whether any Underwriter has advised or is currently advising the Company on other matters). The Company hereby waives and releases, to the fullest extent permitted by law, any claims that the Company may have against the Underwriters with respect to any breach or alleged breach of any fiduciary, advisory or similar duty to the Company in connection with the transactions contemplated by this Agreement or any matters leading up to such transactions.

16. USA 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 respective clients, including the Company, which information may include the name and address of their respective clients, as well as other information that will allow the Underwriters to properly identify their respective clients.

17. Counterparts. This Agreement may be signed by the parties in one or more counterparts which together shall constitute one and the same agreement among the parties.

18. Successors and Assigns. This Agreement shall be binding upon the Underwriters and the Company and their successors and assigns and any successor or assign of any substantial portion of the Company’s and any of the Underwriters’ respective businesses and/or assets.

19. Miscellaneous. UBS Securities LLC, an indirect, wholly owned subsidiary of UBS AG, is not a bank and is separate from any affiliated bank, including any United States branch or agency of UBS AG. Because UBS Securities LLC is a separately incorporated entity, it is solely responsible for its own contractual obligations and commitments, including obligations with respect to sales and purchases of securities. Securities sold, offered or recommended by UBS Securities LLC are not deposits, are not insured by the Federal Deposit Insurance Corporation, are not guaranteed by a branch or agency, and are not otherwise an obligation or responsibility of a branch or agency.

[The Remainder of This Page Intentionally Left Blank; Signature Page Follows]

If the foregoing correctly sets forth the understanding between the Company and the several Underwriters, please so indicate in the space provided below for that purpose, whereupon this Agreement and your acceptance shall constitute a binding agreement between the Company and the Underwriters, severally.


Very truly yours,

GEVO, INC.

By:	/s/ Patrick R. Gruber
	Name:	Patrick R. Gruber
	Title:	Chief Executive Officer


Accepted and agreed to as of the date first above written, on behalf of themselves and the other several Underwriters named in Schedule A

UBS SECURITIES LLC
PIPER JAFFRAY & CO.

By: UBS SECURITIES LLC

By:	/s/ Jamey Escaler
	Name:	Jamey Escaler
	Title:	Managing Director

By: UBS SECURITIES LLC

By:	/s/ Vishal Jain
	Name:	Vishal Jain
	Title:	Director

By:	PIPER JAFFRAY & CO.

By:	/s/ J. Thomas Halverson, Jr.
	Name:	J. Thomas Halverson, Jr.
	Title:	Managing Director

SCHEDULE A


Underwriter	Number of Firm Shares
UBS SECURITIES LLC		5,893,750
PIPER JAFFRAY & CO.		5,731,250
ROBERT W. BAIRD		875,000


Total		12,500,000

SCHEDULE B

Permitted Free Writing Prospectuses

1.	Free Writing Prospectus filed by the Company with the Securities and Exchange Commission on June 28, 2012.

2.	Free Writing Prospectus filed by the Company with the Securities and Exchange Commission on June 29, 2012.

EXHIBIT A

Lock-Up Agreement

, 2012

UBS Securities LLC

Piper Jaffray & Co.

Together with the other Underwriters

Named in Schedule A to the Underwriting Agreement

referred to herein

c/o UBS Securities LLC

299 Park Avenue

New York, New York 10171-0026

Ladies and Gentlemen:

This Lock-Up Agreement is being delivered to you in connection with the proposed Underwriting Agreement (the “Underwriting Agreement”) to be entered into by Gevo, Inc., a Delaware corporation (the “Company”), and you and the other underwriters named in Schedule A to the Underwriting Agreement, with respect to the public offering (the “Offering”) of common stock, par value $0.01 per share, of the Company (the “Common Stock”).

In order to induce you to enter into the Underwriting Agreement, the undersigned agrees that, for a period (the “Lock-Up Period”) beginning on the date hereof and ending on and including, the date that is 90 days after the date of the final prospectus relating to the Offering, the undersigned will not, without the prior written consent of UBS Securities LLC, (i) sell, offer to sell, contract or agree to sell, hypothecate, pledge, grant any option to purchase or otherwise dispose of or agree to dispose of, directly or indirectly, or file (or participate in the filing of) a registration statement with the Securities and Exchange Commission (the “Commission”) in respect of, or establish or increase a put equivalent position or liquidate or decrease a call equivalent position within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended, and the rules and regulations of the Commission promulgated thereunder (the “Exchange Act”) with respect to, any Common Stock or any other securities of the Company that are substantially similar to Common Stock, or any securities convertible into or exchangeable or exercisable for, or any warrants or other rights to purchase, the foregoing, (ii) enter into any swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of Common Stock or any other securities of the Company that are substantially similar to Common Stock, or any securities convertible into or exchangeable or exercisable for, or any warrants or other rights to purchase, the foregoing, whether any such transaction is to be settled by delivery of Common Stock or such other securities, in cash or otherwise or (iii) publicly announce an intention to effect any transaction specified in clause (i) or (ii).

The foregoing sentence shall not apply to the following transfers:

(a) the registration of the offer and sale of Common Stock as contemplated by the Underwriting Agreement and the sale of the Common Stock to the Underwriters (as defined in the Underwriting Agreement) in the Offering;

(b) bona fide gifts, provided the recipient thereof agrees in writing with the Underwriters to be bound by the terms of this Lock-Up Agreement;

(c) dispositions to any trust for the direct or indirect benefit of the undersigned and/or the “immediate family” (defined as the spouse, any lineal descendent, father, mother, brother or sister) of the undersigned, provided that (1) such disposition does not involve a disposition for value, and (2) such trust agrees in writing with the Underwriters to be bound by the terms of this Lock-Up Agreement;

(d) if the undersigned is a corporation, limited liability company or partnership, transfers to a wholly-owned subsidiary of the undersigned or to the direct or indirect stockholders, members or partners or other affiliates of the undersigned, provided that (1) such transfer does not involve a disposition for value, (2) the transferee agrees in writing with the Underwriters to be bound by the terms of this Lock-Up Agreement, and (3) no filing pursuant to Section 16 of the Exchange Act is required as a result of such transfer;

(e) transfers which occur by operation of law, such as the rules of intestate succession, provided that (1) no filing pursuant to Section 16 of the Exchange Act is required as a result of such transfer, and (2) such transferee agrees in writing with the Underwriters to be bound by the terms of this Lock-Up Agreement;

(f) the disposition of shares of Common Stock acquired in open market transactions after the Offering; provided that such disposition is not required to be reported pursuant to Section 16 of the Exchange Act;

(g) transfers in connection with the receipt or vesting of securities issued to the undersigned by the Company pursuant to any equity incentive or other compensatory plans, the withholding by the Company or surrender of such securities and/or any sale or other disposition of such securities, solely in order to satisfy tax liabilities with respect to such issuance or vesting or any deemed disposition or deemed sale with respect to such securities;

(h) sales of shares of Common Stock pursuant to trading plans pursuant to Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended, in existence on the date hereof; and

(i) transfers pursuant to a sale or an offer to purchase 100% of the Common Stock, whether pursuant to a merger, tender offer or otherwise, to a third party or group of third parties.

In addition, the undersigned hereby waives any rights the undersigned may have to require registration of Common Stock in connection with the filing of a registration statement relating to the Offering. The undersigned further agrees that, for the Lock-Up Period, the undersigned will not, without the prior written consent of UBS Securities LLC, make any demand for, or exercise any right with respect to, the registration of Common Stock or any securities convertible into or exercisable or exchangeable for Common Stock, or warrants or other rights to purchase Common Stock or any such securities.

Notwithstanding the above, if (i) during the period that begins on the date that is fifteen calendar days plus three business days before the last day of the Lock-Up Period and ends on the last day of the Lock-Up Period, the Company issues an earnings release or material news or a material event relating to the Company occurs; or (ii) prior to the expiration of the Lock-Up Period, the Company announces that it will release earnings results during the sixteen day period beginning on the last day of the Lock-Up Period, then the restrictions imposed by this Lock-Up Agreement shall continue to apply until the expiration of the date that is fifteen calendar days plus three business days after the date on which the issuance of the earnings release or the material news or material event occurs.

The undersigned hereby confirms that the undersigned has not, directly or indirectly, taken, and hereby covenants that the undersigned will not, directly or indirectly, take, any action designed, or which has constituted or will constitute or might reasonably be expected to cause or result in the stabilization or manipulation of the price of any security of the Company to facilitate the sale or resale of shares of Common Stock.

The undersigned hereby authorizes the Company and its transfer agent, during the Lock-Up Period, to decline the transfer of or to note stop transfer restrictions on the stock register and other records relating to shares of Common Stock or other securities subject to this Lock-Up Agreement of which the undersigned is the record holder, and, with respect to shares of Common Stock or other securities subject to this Lock-Up Agreement of which the undersigned is the beneficial owner but not the record holder, the undersigned hereby agrees to cause such record holder to authorize the Company and its transfer agent, during the Lock-Up Period, to decline the transfer of or to note stop transfer restrictions on the stock register and other records relating to such shares or other securities, except, in each case, if the proposed transfer would be permitted pursuant to any of clauses (a), (b), (c), (d), (e), (f), (g), (h) or (i) above.

* * *

If (i) the Company notifies you in writing that it does not intend to proceed with the Offering, (ii) the registration statement filed with the Commission with respect to the Offering is withdrawn or (iii) for any reason the Underwriting Agreement shall be terminated prior to the “time of purchase” (as defined in the Underwriting Agreement), this Lock-Up Agreement shall be terminated and the undersigned shall be released from its obligations hereunder.

Yours very truly,

Name:

Underwriting Agreement

Exhibit 1.2

EXECUTION COPY

GEVO, INC.

$40,000,000 Principal Amount

7.5% Convertible Senior Notes due 2022

UNDERWRITING AGREEMENT

June 29, 2012

UBS Securities LLC

Piper Jaffray & Co.

as Managing Underwriters

c/o UBS Securities LLC

299 Park Avenue

New York, New York 10171-0026

c/o Piper Jaffray & Co.

800 Nicollet Mall, Suite 800

Minneapolis, MN 55402

Ladies and Gentlemen:

Gevo, Inc., a Delaware corporation (the “Company”), proposes to issue and sell to the underwriters named in Schedule A annexed hereto (the “Underwriters”), for whom you are acting as representatives, $40,000,000 aggregate principal amount of its 7.5% Convertible Senior Notes Due 2022 (the “Firm Notes”). In addition, solely for the purpose of covering over-allotments, the Company proposes to grant to the Underwriters the option to purchase from the Company up to an additional $5,000,000 aggregate principal amount of the Company’s 7.5% Convertible Senior Notes due 2022 (the “Additional Notes”). The Firm Notes and the Additional Notes, if and to the extent such option is exercised, are hereinafter collectively sometimes referred to as the “Notes.”

The Notes are to be issued pursuant to an indenture to be dated as of July 5, 2012, between the Company and Wells Fargo Bank, National Association, as trustee (the “Trustee”), as supplemented by a supplemental indenture to be dated as of July 5, 2012 between the Company and the Trustee (such indenture, as supplemented, the “Indenture”). The Notes will be convertible in accordance with their terms and the terms of the Indenture into shares of the common stock, par value $.01 per share, (the “Common Stock”) of the Company (the “Shares”). The Notes and the Shares are described in the Prospectus which is referred to below.

incorporated or deemed to be incorporated by reference therein, (ii) any information contained or incorporated by reference in a prospectus filed with the Commission pursuant to Rule 424(b) under the Act, to the extent such information is deemed, pursuant to Rule 430B or 430C under the Act, to be part of the registration statement at the Effective Time, and (iii) any registration statement filed to register the offer and sale of the Notes pursuant to Rule 462(b) under the Act.

The Company has furnished to you, for use by the Underwriters and by dealers in connection with the offering of the Notes, copies of one or more preliminary prospectus supplements and the documents incorporated by reference therein, relating to the Notes. Except where the context otherwise requires, “Pre-Pricing Prospectus,” as used herein, means each such preliminary prospectus supplement, in the form so furnished, including any basic prospectus (whether or not in preliminary form) furnished to you by the Company and attached to or used with such preliminary prospectus supplement. Except where the context otherwise requires, “Basic Prospectus,” as used herein, means any such basic prospectus and any basic prospectus furnished to you by the Company and attached to or used with the Prospectus Supplement (as defined below).

Except where the context otherwise requires, “Prospectus Supplement,” as used herein, means the final prospectus supplement, relating to the Notes, filed by the Company with the Commission pursuant to Rule 424(b) under the Act on or before the second business day after the date hereof (or such earlier time as may be required under the Act) in the form furnished by the Company to you for use by the Underwriters and by dealers in connection with the offering of the Notes.

Except where the context otherwise requires, “Prospectus,” as used herein, means the Prospectus Supplement together with the Basic Prospectus attached to or used with the Prospectus Supplement.

“Permitted Free Writing Prospectuses,” as used herein, means the documents listed on Schedule B attached hereto and each “road show” (as defined in Rule 433 under the Act), if any, related to the offering of the Notes contemplated hereby that is a “written communication” (as defined in Rule 405 under the Act). The Underwriters have not offered or sold and will not offer or sell, without the Company’s consent, any Notes by means of any “free writing prospectus” (as defined in Rule 405 under the Act) that is required to be filed by the Underwriters or the Company with the Commission pursuant to Rule 433 under the Act, other than a Permitted Free Writing Prospectus.

“Covered Free Writing Prospectuses,” as used herein, means (i) each “issuer free writing prospectus” (as defined in Rule 433(h)(1) under the Act), if any, relating to the Notes, which is not a Permitted Free Writing Prospectus and (ii) each Permitted Free Writing Prospectus.

“Disclosure Package,” as used herein, means any Pre-Pricing Prospectus together with any combination of one or more of the Permitted Free Writing Prospectuses, if any.

“Applicable Time”, as used herein, means 7:30 A.M., New York City time, on June 29, 2012.

Any reference herein to the Registration Statement, any Basic Prospectus, any Pre-Pricing Prospectus, the Prospectus Supplement, the Prospectus or any Permitted Free Writing Prospectus shall be deemed to refer to and include the documents, if any, incorporated by reference, or deemed to be incorporated by reference, therein (the “Incorporated Documents”), including, unless the context otherwise requires, the documents, if any, filed as exhibits to such Incorporated Documents. Any reference herein to the terms “amend,” “amendment” or “supplement” with respect to the Registration Statement, any Basic Prospectus, any Pre-Pricing Prospectus, the Prospectus Supplement, the Prospectus or any Permitted Free Writing Prospectus shall be deemed to refer to and include the filing of any document under the Exchange Act on or after the initial effective date of the Registration Statement, or the date of such Basic Prospectus, such Pre-Pricing Prospectus, the Prospectus Supplement, the Prospectus or such Permitted Free Writing Prospectus, as the case may be, and deemed to be incorporated therein by reference.

The Company and the Underwriters agree as follows:

1. Sale and Purchase. Upon the basis of the representations and warranties and subject to the terms and conditions herein set forth, the Company agrees to issue and sell to the respective Underwriters and each of the Underwriters, severally and not jointly, agrees to purchase from the Company the aggregate principal amount of Firm Notes set forth opposite the name of such Underwriter in Schedule A attached hereto, subject to adjustment in accordance with Section 8 hereof, in each case at a purchase price of 94.00% of the principal amount thereof. The Company is advised by you that the Underwriters intend (i) to make a public offering of their respective portions of the Firm Notes as soon after the effectiveness of this Agreement as in your judgment is advisable and (ii) initially to offer the Firm Notes upon the terms set forth in the Prospectus. You may from time to time increase or decrease the public offering price after the initial public offering to such extent as you may determine.

In addition, the Company hereby grants to the several Underwriters the option (the “Option to Purchase Additional Notes”) to purchase, and upon the basis of the representations and warranties and subject to the terms and conditions herein set forth, the Underwriters shall have the right to purchase, severally and not jointly, from the Company, ratably in accordance with the aggregate principal amount of Firm Notes to be purchased by each of them, all or a portion of the Additional Notes as may be necessary to cover over-allotments, if any, made in connection with the offering of the Firm Notes, at a purchase price of 94.00% of the principal amount thereof. The Option to Purchase Additional Notes may be exercised by UBS Securities LLC on behalf of the several Underwriters at any time and from time to time on or before the thirtieth day following the date of this Agreement, by written notice to the Company. Such notice shall set forth the aggregate principal amount of Additional Notes as to which the Option to Purchase Additional Notes is being exercised and the date and time when the Additional Notes are to be delivered (any such date and time being herein referred to as an “additional time of purchase”); provided, however, that no additional time of purchase shall be earlier than the “time

of purchase” (as defined below) nor earlier than the second business day after the date on which the Option to Purchase Additional Notes shall have been exercised nor later than the tenth business day after the date on which the Option to Purchase Additional Notes shall have been exercised. The principal amount of Additional Notes to be sold to each Underwriter shall be the principal amount which bears the same proportion to the aggregate principal amount of Additional Notes being purchased as the principal amount of Firm Notes set forth opposite the name of such Underwriter on Schedule A hereto bears to the aggregate principal amount of Firm Notes, subject to adjustment in accordance with Section 8 hereof.

2. Payment and Delivery. Payment of the purchase price for the Firm Notes shall be made to the Company by federal funds wire transfer against delivery of the Firm Notes to you through the facilities of The Depository Trust Company (“DTC”) for the respective accounts of the Underwriters. Such payment and delivery shall be made at 10:00 A.M., New York City time, on the closing date (unless another time shall be agreed to by you and the Company or unless postponed in accordance with the provisions of Section 8 hereof). The time at which such payment and delivery are to be made is hereinafter sometimes called the “time of purchase.” Electronic transfer of the Firm Notes shall be made to you at the time of purchase in such names and in such denominations as you shall specify.

Payment of the purchase price for the Additional Notes shall be made at the additional time of purchase in the same manner and at the same office and time of day as the payment for the Firm Notes. Electronic transfer of the Additional Notes shall be made to you at the additional time of purchase in such names and in such denominations as you shall specify.

Deliveries of the documents described in Section 6 hereof with respect to the purchase of the Notes shall be made at the offices of Covington & Burling LLP at 620 Eighth Avenue, New York, New York 10018, at 9:00 A.M., New York City time, on the date of the closing of the purchase of the Firm Notes or the Additional Notes, as the case may be.

3. Representations and Warranties of the Company. The Company represents and warrants to and agrees with each of the Underwriters that:

(a) the Registration Statement has heretofore become effective under the Act or, with respect to any registration statement to be filed to register the offer and sale of Notes and the Shares pursuant to Rule 462(b) under the Act, will be filed with the Commission and become effective under the Act no later than 10:00 P.M., New York City time, on the date hereof; no stop order of the Commission preventing or suspending the use of any Basic Prospectus, any Pre-Pricing Prospectus, the Prospectus Supplement, the Prospectus or any Permitted Free Writing Prospectus, or the effectiveness of the Registration Statement, has been issued, and no proceedings for such purpose have been instituted or, to the Company’s knowledge, are contemplated by the Commission;

Registration Statement meets, and the offering and sale of the Notes and the Shares as contemplated hereby complies with, the requirements of Rule 415 under the Act; the Pre-Pricing Prospectus complied, at the time it was filed with the Commission, and complies as of the date hereof, in all material respects, with the requirements of the Act; the Disclosure Package, as of the Applicable Time, did not include an untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading; the Prospectus will comply, as of its date, the time of purchase, and each additional time of purchase, if any, and at all times during which a prospectus is required by the Act to be delivered (whether physically or through compliance with Rule 172 under the Act of any similar rule) in connection with any sale of Notes or Shares, in all material respects, with the requirements of the Act (including, without limitation, Section 10(a) of the Act); at no time during the period that begins on the date of the Prospectus Supplement and ends at the later of the time of purchase, and any additional time of purchase, if any, and the end of the period during which a prospectus is required by the Act to be delivered (whether physically or through compliance with Rule 172 under the Act of any similar rule) in connection with any sale of Notes or Shares did or will the Prospectus, as then amended or supplemented, include an untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading; provided, however, that the Company makes no representation or warranty in this Section 3(b) or otherwise with respect to any statement contained in the Registration Statement, the Disclosure Package or the Prospectus made in reliance upon and in conformity with information concerning an Underwriter and furnished in writing by or on behalf of such Underwriter through you to the Company expressly for use in the Registration Statement, the Disclosure Package or the Prospectus; each Incorporated Document, at the time such document was filed, or will be filed, with the Commission or at the time such document became or becomes effective, as applicable, complied or will comply, in all material respects, with the requirements of the Exchange Act and did not or will not, as applicable, include an untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading;

(c) prior to the execution of this Agreement, the Company has not, directly or indirectly, offered or sold any Notes by means of any “prospectus” (within the meaning of the Act) or used any “prospectus” (within the meaning of the Act) in connection with the offer or sale of the Notes, in each case other than the Pre-Pricing Prospectuses and the Permitted Free Writing Prospectuses, if any; the Company has not, directly or indirectly, prepared, used or referred to any Permitted Free Writing Prospectus except in compliance with Rules 164 and 433 under the Act; assuming that such Permitted Free Writing Prospectus is so sent or given after the Registration Statement was filed with the Commission (and after such Permitted Free Writing Prospectus was, if required pursuant to Rule 433(d) under the Act, filed with the Commission), the sending or giving, by any Underwriter, of any Permitted Free Writing Prospectus will satisfy the provisions of Rule 164 and Rule 433 (without reliance on subsections (b), (c) and (d) of Rule 164); the conditions set forth in one or more of subclauses (i) through (iv), inclusive, of Rule 433(b)(1) under the Act are satisfied, and the registration statement relating to the offering of the Notes and the Shares contemplated hereby, as initially filed with the Commission, includes a prospectus that, other than by reason of Rule 433 or Rule 431 under the Act, satisfies the requirements of Section 10 of the Act; neither the Company nor the Underwriters are

disqualified, by reason of subsection (f) or (g) of Rule 164 under the Act, from using, in connection with the offer and sale of the Notes and the Shares, “free writing prospectuses” (as defined in Rule 405 under the Act) pursuant to Rules 164 and 433 under the Act; the Company is not an “ineligible issuer” (as defined in Rule 405 under the Act) as of the eligibility determination date for purposes of Rules 164 and 433 under the Act with respect to the offering of the Notes and the Shares contemplated by the Registration Statement; the parties hereto agree and understand that the content of any and all “road shows” (as defined in Rule 433 under the Act) related to the offering of the Notes and the Shares contemplated hereby is solely the property of the Company;

(e) the Company has been duly incorporated and is validly existing as a corporation in good standing under the laws of the State of Delaware, with full corporate power and authority to own, lease and operate its properties and conduct its business as described in the Disclosure Package and the Prospectus, to execute and deliver this Agreement, the Indenture and the Notes and to issue, sell and deliver the Notes and the Shares issuable upon conversion of the Notes as contemplated by this Agreement, the Indenture and the Notes;

(g) the Company has no subsidiaries (as defined under the Act) other than Gevo Development, LLC, Agri-Energy, LLC and Redfield Energy, LLC (the “Subsidiaries”); the Company owns, directly or indirectly, all of the issued and outstanding capital stock or other equity interests of each of the Subsidiaries, except as disclosed in the Disclosure Package and the Prospectus; other than the capital stock or other equity interests of the Subsidiaries, the Company does not own, directly or indirectly, any shares of stock or any other equity interests or long-term debt securities of any corporation, firm, partnership, joint venture, association or other entity; complete and correct copies of the charters and the bylaws (or similar organizational documents) of the Company and each Subsidiary and all amendments thereto have been delivered to you, and no changes therein will be made on or after the date hereof through and including the time of purchase or, if later, any additional time of purchase; each Subsidiary has been duly incorporated or formed and is validly existing as a corporation, limited liability company, or other entity in good standing under the laws of the jurisdiction of its incorporation or formation, with full corporate or other power and authority to own, lease and operate its properties and to conduct its business as described in the Disclosure Package and the Prospectus; each Subsidiary is duly qualified to do business as a foreign corporation, limited liability company, or other entity and is in good standing in each jurisdiction where the ownership or leasing of its properties or the conduct of its business requires such qualification, except where the failure to be so qualified and in good standing would not, individually or in the aggregate, have a Material Adverse Effect; all of the outstanding shares of capital stock or other equity interests of each of the Subsidiaries have been duly authorized and validly issued, are fully paid and non-assessable, have been issued in compliance with all applicable securities laws, were not issued in violation of any preemptive right, resale right, right of first refusal or similar right and, except as disclosed in the Disclosure Package and the Prospectus, are owned by the Company subject to no security interest, other encumbrance or adverse claims; and no options, warrants or other rights to purchase, agreements or other obligations to issue or other rights to convert any obligation into shares of capital stock or ownership interests in the Subsidiaries are outstanding;

(h) the Common Stock of the Company, the terms of the Notes, the Indenture and the capital stock of the Company, including the Shares, conform in all material respects to the description thereof contained or incorporated by reference in the Disclosure Package and the Prospectus;

(i) there is no franchise, contract or other document of a character required to be described in the Registration Statement or Prospectus, or to be filed as an exhibit thereto, which is not described or filed as required (and the Disclosure Package contains in all material respects the same description of the foregoing matters contained in the Prospectus);

(j) this Agreement has been duly authorized, executed and delivered by the Company;

(k) the Indenture has been duly qualified under the Trust Indenture Act of 1939, as amended (the “Trust Indenture Act”), and has been duly authorized by the Company and, when executed and delivered by the Company and the Trustee, will be a legal, valid and binding agreement of the Company, enforceable in accordance with its terms, except as the enforceability thereof may be limited by bankruptcy, insolvency, reorganization, moratorium or similar laws affecting creditors’ rights generally and general principles of equity;

(l) the Notes have been duly authorized by the Company and, when executed and delivered by the Company and duly authenticated in accordance with the terms of the Indenture and delivered to and paid for by the Underwriters in accordance with the terms hereof, will constitute legal, valid and binding obligations of the Company, enforceable in accordance with their terms, except as the enforceability thereof may be limited by bankruptcy, insolvency, reorganization, moratorium or similar laws affecting creditors’ rights generally and general principles of equity, and will be entitled to the benefits of the Indenture; the Shares issuable upon conversion of the Notes have been duly authorized and validly reserved for issuance upon conversion of the Notes, and, upon conversion of the Notes in accordance with their terms and the terms of the Indenture, will be issued free of statutory and contractual preemptive rights, resale rights, rights of first refusal and similar rights and free of any voting restrictions (and will be free of any restriction, pursuant to the Company’s charter or bylaws or any agreement or other instrument to which the Company is a party, upon the transfer thereof), and are sufficient in number to meet the current conversion requirements; such Shares, when so issued upon such conversion in accordance with the terms of the Notes and of the Indenture, will be duly and validly issued and fully paid and nonassessable; and the certificates for such Shares will be in due and proper form;

(m) neither the Company nor any of the Subsidiaries is in breach or violation of or in default under (nor has any event occurred which, with notice, lapse of time or both, would result in any breach or violation of, constitute a default under or give the holder of any indebtedness (or a person acting on such holder’s behalf) the right to require the repurchase, redemption or repayment of all or a part of such indebtedness under) (i) its respective charter or bylaws, or (ii) any indenture, mortgage, deed of trust, bank loan or credit agreement or other evidence of indebtedness, or any license, lease, contract or other agreement or instrument to which it is a party or by which it or any of its properties may be bound or affected, or (iii) any federal, state, local or foreign law, regulation or rule applicable to the Company or any of the Subsidiaries or any of their respective properties, or (iv) any rule or regulation of any self-regulatory organization or other non-governmental regulatory authority (including, without limitation, the rules and regulations of the NASDAQ) having jurisdiction over the Company or any of the Subsidiaries or any of their respective properties, or (v) any decree, judgment or order applicable to it or any of its properties, except, in the cases of clauses (ii), (iii), (iv) and (v), such breaches, violations, defaults, or rights that would not, individually or in the aggregate, have a Material Adverse Effect;

(n) the execution, delivery and performance of this Agreement, the Indenture and the Notes by the Company, and the consummation by the Company of the transactions contemplated hereby and thereby, including the issuance and sale of the Notes, the issuance of the Shares issuable upon conversion of the Notes and the application of the net proceeds from the offering of the Notes as described in the Prospectus, will not conflict with, result in any breach or violation of or constitute a default under (nor constitute any event which, with notice, lapse of time or both, would result in any breach or violation of, constitute a default under or give the holder of any indebtedness (or a person acting on such holder’s behalf) the right to require the repurchase, redemption or repayment of all or a part of such indebtedness under) (or result in the creation or imposition of a lien, charge or encumbrance on any property or assets of the Company or any Subsidiary pursuant to) (i) the charter or bylaws of the Company or any of the Subsidiaries, or (ii) any indenture, mortgage, deed of trust, bank loan or credit agreement or

other evidence of indebtedness, or any license, lease, contract or other agreement or instrument to which the Company or any of the Subsidiaries is a party or by which any of them or any of their respective properties may be bound or affected, or (iii) any federal, state, local or foreign law, regulation or rule applicable to the Company or any of the Subsidiaries or any of their respective properties, or (iv) any rule or regulation of any self-regulatory organization or other non-governmental regulatory authority (including, without limitation, the rules and regulations of the NASDAQ) having jurisdiction over the Company or any of the Subsidiaries or any of their respective properties, or (v) any decree, judgment or order applicable to the Company or any of the Subsidiaries or any of their respective properties; except, in the cases of clauses (ii), (iii), (iv) and (v) such breaches, violations, defaults, or rights that would not, individually or in the aggregate, have a Material Adverse Effect;

(o) no approval, authorization, consent or order of or filing with any federal, state, local or foreign governmental or regulatory commission, board, body, authority or agency, or of or with any self-regulatory organization or other non-governmental regulatory authority (including, without limitation, the NASDAQ), or approval of the stockholders of the Company, is required to be obtained or made by the Company in connection with the issuance and sale of the Notes or the issuance of Shares upon conversion of the Notes, or the consummation by the Company of the transactions contemplated by this Agreement, the Indenture or the Notes, other than (i) the registration of the Notes under the Act, which has been effected (or, with respect to any registration statement to be filed hereunder pursuant to Rule 462(b) under the Act, will be effected in accordance herewith), (ii) any necessary qualification under the securities or blue sky laws of the various jurisdictions in which the Notes are being offered by the Underwriters, (iii) under the Conduct Rules of FINRA, (iv) any listing applications or other notices required by the NASDAQ, (v) filings with the Commission pursuant to Rule 424(b) under the Act, or (vi) filings with the Commission on Form 8-K with respect to this Agreement, the Indenture or the Notes;

(p) except as described in the Disclosure Package and the Prospectus, (i) no person has the right, contractual or otherwise, to cause the Company to issue or sell to it any shares of Common Stock or shares of any other capital stock or other equity interests of the Company, (ii) no person has any preemptive rights, resale rights, rights of first refusal or other rights to purchase from the Company any shares of Common Stock or shares of any other capital stock of or other equity interests in the Company and (iii) no person has the right, contractual or otherwise, to cause the Company to register under the Act any shares of Common Stock or shares of any other capital stock of or other equity interests in the Company, or to include any such shares or interests in the Registration Statement or the offering contemplated thereby;

(q) except as described in the Disclosure Package and the Prospectus, (i) each of the Company and the Subsidiaries has all necessary licenses, authorizations, consents and approvals and has made all necessary filings required under any applicable law, regulation or rule, and has obtained all necessary licenses, authorizations, consents and approvals from other persons, in order to conduct their respective businesses as presently conducted and (ii) neither the Company nor any of the Subsidiaries is in violation of, or in default under, or has received notice of any proceedings relating to revocation or modification of, any such license, authorization, consent or approval or any federal, state, local or foreign law, regulation or rule or any decree, order or judgment applicable to the Company or any of the Subsidiaries, except with respect to clauses (i) and (ii), as would not, individually or in the aggregate, have a Material Adverse Effect;

(r) except as described in the Disclosure Package and the Prospectus, there are no actions, suits, claims, investigations or proceedings pending or, to the Company’s knowledge, threatened or contemplated to which the Company or any of the Subsidiaries or, to the best of the Company’s knowledge, any of their respective directors or officers, in their capacities as such, is, or would be, a party or of which any of their respective properties is, or would be, subject at law or in equity, before or by any federal, state, local or foreign governmental or regulatory commission, board, body, authority or agency, or before or by any self-regulatory organization or other non-governmental regulatory authority (including, without limitation, the NASDAQ) applicable to it, except any such action, suit, claim, investigation or proceeding which, if resolved adversely to the Company or any Subsidiary, would not, individually or in the aggregate, have a Material Adverse Effect;

(s) Deloitte & Touche LLP, whose report on the consolidated financial statements of the Company and the Subsidiaries is included or incorporated by reference in the Registration Statement, the Disclosure Package and the Prospectus, are independent registered public accountants with respect to the Company as required by the Act and by the rules of the Public Company Accounting Oversight Board;

(t) the financial statements included or incorporated by reference in the Registration Statement, the Disclosure Package and the Prospectus, together with the related notes and schedules, and the interactive data in eXtensible Business Reporting Language (“XBRL”) included or incorporated by reference in the Registration Statement, present fairly, in all material respects, the consolidated financial position of the Company and the Subsidiaries as of the dates indicated and the consolidated results of operations, cash flows and changes in stockholders’ equity of the Company and the Subsidiaries for the periods specified and have been prepared in compliance, in all material respects, with the requirements of the Act and the Exchange Act and in conformity with United States generally accepted accounting principles applied on a consistent basis during the periods involved (except as disclosed therein); the other financial and statistical data of the Company contained or incorporated by reference in the Registration Statement, the Disclosure Package and the Prospectus, are accurately presented and prepared on a basis consistent with the financial statements and books and records of the Company; there are no financial statements (historical or pro forma) that are required to be included or incorporated by reference in the Registration Statement, the Disclosure Package and the Prospectus that are not included or incorporated by reference as required; the Company and the Subsidiaries do not have any material liabilities or obligations, direct or contingent (including any off-balance sheet obligations), not disclosed in the Registration Statement (excluding the exhibits thereto), the Disclosure Package and the Prospectus; and all disclosures contained or incorporated by reference in the Registration Statement, the Disclosure Package and the Prospectus, regarding “non-GAAP financial measures” (as such term is defined by the rules and regulations of the Commission), if any, comply with Regulation G of the Exchange Act and Item 10 of Regulation S-K under the Act, to the extent applicable;

(u) except as disclosed in the Disclosure Package and the Prospectus, each stock option granted under any equity incentive plan of the Company or any Subsidiary (each, a “Stock Plan”) was granted with a per share exercise price no less than the fair market value per share of Common Stock on the grant date of such option, and no such grant involved any “back-dating,” “forward-dating” or similar practice with respect to the effective date of such grant; except as

would not, individually or in the aggregate, have a Material Adverse Effect, each such option (i) was granted in material compliance with applicable law and with the applicable Stock Plan(s), (ii) if granted to an officer of the Company, was duly approved by the board of directors (or a duly authorized committee thereof) of the Company, and (iii) has been properly accounted for in the Company’s financial statements in accordance with United States generally accepted accounting principles and disclosed in the Company’s filings with the Commission;

(v) between the latest date as of which information is given in the Registration Statement, the Disclosure Package and the Prospectus, and the time of purchase and each additional time of purchase, if any, in each case excluding any amendments or supplements to the foregoing made after the execution of this Agreement, there has not been (i) any event or circumstance that has or would reasonably be expected to have, individually or in the aggregate, a Material Adverse Effect, or (ii) any obligation or liability, direct or contingent (including any off-balance sheet obligations), incurred by the Company or any Subsidiary, which is material to the Company and the Subsidiaries taken as a whole;

(w) the Company has obtained for the benefit of the Underwriters the agreement (a “Lock-Up Agreement”), in the form set forth as Exhibit A hereto, of each of its directors and “officers” (within the meaning of Rule 16a-1(f) under the Exchange Act);

(x) neither the Company nor any Subsidiary is, and, solely after giving effect to the offering and sale of the Notes and the application of the proceeds thereof as described in the Disclosure Package and the Prospectus, neither of them will be, an “investment company” as such term is defined in the Investment Company Act of 1940, as amended (the “Investment Company Act”);

(y) the Company and each of the Subsidiaries have good title to all property (real and personal, excluding for the purposes of this subsection (w), Intellectual Property (as defined below)) owned by them which is material to the business of the Company and the Subsidiaries, taken as a whole, in each case, free and clear of all liens, claims, security interests or other encumbrances, except as disclosed in the Disclosure Package and the Prospectus and except as would not, individually or in the aggregate, have a Material Adverse Effect; all the property described in the Registration Statement, the Disclosure Package and the Prospectus, as being held under lease by the Company or a Subsidiary is held thereby under valid, subsisting and enforceable leases, except as would not, individually or in the aggregate, have a Material Adverse Effect;

(z) except as otherwise disclosed in the Disclosure Package and the Prospectus, the Company and the Subsidiaries own, or have obtained licenses for, or other rights to use, the inventions, patent applications, patents, trademarks (both registered and unregistered), trade names, service names, copyrights, trade secrets and other proprietary information described in the Disclosure Package and the Prospectus, as being owned or licensed by them or which are necessary for the conduct of their respective businesses as currently conducted (including the commercialization of products or services described in the Disclosure Package and the Prospectus, as currently under development) (collectively, “Intellectual Property”), except where the failure to own, license or have such rights would not, individually or in the aggregate, have a

Material Adverse Effect. Except as otherwise disclosed in the Disclosure Package and the Prospectus and except as would not, individually or in the aggregate, have a Material Adverse Effect, (i) there are no third parties who have or, to the Company’s knowledge, will be able to establish rights to any Intellectual Property owned by the Company or any of the Subsidiaries (“Company Intellectual Property”), except for any third parties to whom the Company or any of the Subsidiaries has granted licenses to the Company Intellectual Property pursuant to written license agreements in the ordinary course of business; (ii) to the Company’s knowledge, there is no infringement by third parties of any Company Intellectual Property; (iii) there is no pending or, to the Company’s knowledge, threatened action, suit, proceeding or claim by others challenging the Company’s rights in or to any Intellectual Property, and the Company is unaware of any facts which could form a reasonable basis for any such action, suit, proceeding or claim; (iv) there is no pending or, to the Company’s knowledge, threatened action, suit, proceeding or claim by others challenging the validity, enforceability or scope of any Company Intellectual Property, and the Company is unaware of any facts which could form a reasonable basis for any such action, suit, proceeding or claim; (v) there is no pending or, to the Company’s knowledge, threatened action, suit, proceeding or claim by others that the Company or any Subsidiary infringes or otherwise violates, or would, upon the commercialization of any product or service described in the Disclosure Package and the Prospectus, as under development, infringe or violate, any patent, trademark, trade name, service name, copyright, trade secret or other proprietary rights of others, and the Company is unaware of any facts which could form a reasonable basis for any such action, suit, proceeding or claim; (vi) the Company and the Subsidiaries have complied with the terms of each agreement pursuant to which Intellectual Property has been licensed to the Company or any Subsidiary, and all such agreements are in full force and effect; (vii) there is no patent or, to the Company’s knowledge, patent application, that contains claims that interfere with the issued or pending claims of any patent or patent application included in the Company Intellectual Property or that challenges the validity, enforceability or scope of any patent included in the Company Intellectual Property; and (viii) the Company has disclosed to the United States Patent and Trademark Office all prior art within the possession of the Company that may render any patent application within the Company Intellectual Property unpatentable or the failure to disclose of which may render any patent issued thereon unenforceable;

(aa) neither the Company nor any of the Subsidiaries is engaged in any unfair labor practice; except for matters which would not, individually or in the aggregate, have a Material Adverse Effect, (i) there is (A) no unfair labor practice complaint pending or, to the Company’s knowledge, threatened against the Company or any of the Subsidiaries before the National Labor Relations Board, and no grievance or arbitration proceeding arising out of or under collective bargaining agreements is pending or, to the Company’s knowledge, threatened, (B) no strike, labor dispute, slowdown or stoppage pending or, to the Company’s knowledge, threatened against the Company or any of the Subsidiaries and (C) no union representation dispute currently existing concerning the employees of the Company or any of the Subsidiaries, (ii) to the Company’s knowledge, no union organizing activities are currently taking place concerning the employees of the Company or any of the Subsidiaries and (iii) there has been no violation of any federal, state, local or foreign law relating to discrimination in the hiring, promotion or pay of employees, any applicable wage or hour laws or any provision of the Employee Retirement Income Security Act of 1974, as amended, or the rules and regulations promulgated thereunder concerning the employees of the Company or any of the Subsidiaries;

(bb) the Company and the Subsidiaries and their respective properties, assets and operations are in compliance with, and the Company and each of the Subsidiaries hold all permits, authorizations and approvals required under, Environmental Laws (as defined below), except to the extent that failure to so comply or to hold such permits, authorizations or approvals would not, individually or in the aggregate, have a Material Adverse Effect; except as disclosed in the Disclosure Package and the Prospectus, there are no past, present or, to the Company’s knowledge, reasonably anticipated future events, conditions, circumstances, activities, practices, actions, omissions or plans that would reasonably be expected to give rise to any material costs or liabilities to the Company or any Subsidiary under, or to interfere with or prevent compliance in all material respects by the Company or any Subsidiary with, Environmental Laws; except as would not, individually or in the aggregate, have a Material Adverse Effect, neither the Company nor any of the Subsidiaries (i) to the Company’s knowledge, is the subject of any investigation, (ii) has received any notice or claim, (iii) is a party to any pending or, to the Company’s knowledge, threatened action, suit or proceeding, (iv) to the Company’s knowledge, is affected by any pending or threatened action, suit or proceeding, (v) is bound by any judgment, decree or order or (vi) has entered into any agreement, in each case relating to any alleged violation of any Environmental Law or any actual or alleged release or threatened release or cleanup at any location of any Hazardous Materials (as defined below) (as used herein, “Environmental Law” means any applicable federal, state, local or foreign law, statute, ordinance, rule, regulation, order, decree, judgment, injunction, permit, license, authorization or other binding requirement, or common law, relating to health, safety or the protection, cleanup or restoration of the environment or natural resources, including those relating to the distribution, processing, generation, treatment, storage, disposal, transportation, other handling or release or threatened release of Hazardous Materials, and “Hazardous Materials” means any material (including, without limitation, pollutants, contaminants, hazardous or toxic substances or wastes) that is regulated by or may give rise to liability under any Environmental Law);

(cc) in the ordinary course of their business, the Company and each of the Subsidiaries conduct periodic reviews of the effect of the Environmental Laws on their respective businesses, operations and properties, in the course of which they identify and evaluate associated costs and liabilities (including, without limitation, any capital or operating expenditures required for cleanup, closure of properties or compliance with the Environmental Laws or any permit, license or approval, any related constraints on operating activities and any potential liabilities to third parties);

(dd) except as would not, individually or in the aggregate, have a Material Adverse Effect, the Company and each Subsidiary have timely filed all tax returns required to be filed, and all taxes and other assessments of a similar nature (whether imposed directly or through withholding) including any interest, additions to tax or penalties applicable thereto due or claimed in writing to be due from any such entity have been timely paid, other than those being contested in good faith and for which adequate reserves have been provided;

(ee) the Company and each of the Subsidiaries maintain insurance covering their respective properties, operations, personnel and businesses as the Company reasonably deems adequate; such insurance insures against such losses and risks to an extent which is adequate in accordance with customary industry practice to protect the Company and the Subsidiaries and their respective businesses; all such insurance is fully in force on the date hereof and will be fully

in force at the time of purchase and each additional time of purchase, if any; neither the Company nor any Subsidiary has reason to believe that it will not be able to renew any such insurance as and when such insurance expires;

(ff) neither the Company nor any Subsidiary has sent or received any communication regarding termination of, or intent not to renew, any of the material contracts or agreements referred to or described in the Disclosure Package or the Prospectus, and no such termination or non-renewal has been threatened by the Company or any Subsidiary or, to the Company’s knowledge, any other party to any such contract or agreement;

(gg) the Company maintains a system of internal accounting controls sufficient to provide reasonable assurance that (i) transactions are executed in accordance with management’s general or specific authorization; (ii) transactions are recorded as necessary to permit preparation of financial statements in conformity with generally accepted accounting principles and to maintain accountability for assets; (iii) access to assets is permitted only in accordance with management’s general or specific authorization; and (iv) the recorded accountability for assets is compared with existing assets at reasonable intervals and appropriate action is taken with respect to any differences;

(hh) the Company has established and maintains and evaluates “disclosure controls and procedures” (as such term is defined in Rules 13a-15 and 15d-15 under the Exchange Act) and “internal control over financial reporting” (as such term is defined in Rules 13a-15 and 15d-15 under the Exchange Act); such disclosure controls and procedures are designed to ensure that material information relating to the Company, including its consolidated subsidiaries, is made known to the Company’s Chief Executive Officer and its Chief Financial Officer by others within those entities, and such disclosure controls and procedures are effective to perform the functions for which they were established; in connection with the preparation of the Company’s most recent consolidated financial statements, the Company’s independent registered public accountants and the Audit Committee of the Board of Directors of the Company have been advised of: (i) all significant deficiencies, if any, in the design or operation of internal controls which could adversely affect the Company’s ability to record, process, summarize and report financial data; and (ii) all fraud, if any, whether or not material, that involves management or other employees who have a role in the Company’s internal controls; all “significant deficiencies” and “material weaknesses” (as such terms are defined in Rule 1-02(a)(4) of Regulation S-X under the Act) of the Company, if any, have been identified to the Company’s independent registered public accountants and are disclosed, to the extent required by the Act and the Exchange Act, in the Disclosure Package and the Prospectus; since the date of the most recent evaluation of such disclosure controls and procedures and internal controls, there have been no significant changes in internal controls or in other factors that could significantly affect internal controls, including any corrective actions with regard to significant deficiencies and material weaknesses; the principal executive officers (or their equivalents) and principal financial officers (or their equivalents) of the Company have made all certifications required by the Sarbanes-Oxley Act of 2002 (the “Sarbanes-Oxley Act”) and any related rules and regulations promulgated by the Commission, and the statements contained in each such certification are complete and correct; the Company, the Subsidiaries and the Company’s directors and officers are each in compliance in all material respects with all applicable effective provisions of the Sarbanes-Oxley Act and the rules and regulations of the Commission and the NASDAQ promulgated thereunder;

(ii) each “forward-looking statement” (within the meaning of Section 27A of the Act or Section 21E of the Exchange Act) contained or incorporated by reference in the Registration Statement, the Disclosure Package and the Prospectus, has been made or reaffirmed with a reasonable basis and in good faith;

(jj) all statistical or market-related data included or incorporated by reference in the Disclosure Package and the Prospectus, are based on or derived from sources that the Company reasonably believes to be reliable and accurate, and the Company has obtained the written consent to the use of such data from such sources to the extent required;

(kk) neither the Company nor any of the Subsidiaries nor, to the knowledge of the Company, any director, officer, agent, employee or affiliate of the Company or any of the Subsidiaries is aware of or has taken any action, directly or indirectly, that would result in a violation by such persons of the Foreign Corrupt Practices Act of 1977, as amended, and the rules and regulations thereunder; and the Company, the Subsidiaries and, to the knowledge of the Company, its affiliates have instituted and maintain policies and procedures designed to ensure continued compliance therewith;

(ll) the operations of the Company and the Subsidiaries are and have been conducted at all times in compliance with applicable financial recordkeeping and reporting requirements of the USA Patriot Act, the Bank Secrecy Act of 1970, as amended, the money laundering statutes of all jurisdictions applicable to the Company or the Subsidiaries, the rules and regulations thereunder and any related or similar rules, regulations or guidelines applicable to the Company or the Subsidiaries, issued, administered or enforced by any governmental agency (collectively, the “Money Laundering Laws”); and no action, suit or proceeding by or before any court or governmental agency, authority or body or any arbitrator or non-governmental authority involving the Company or any of the Subsidiaries with respect to the Money Laundering Laws is pending or, to the Company’s knowledge, threatened;

(mm) neither the Company nor any of the Subsidiaries nor, to the knowledge of the Company, any director, officer, agent, employee or affiliate of the Company or any of the Subsidiaries is currently subject to any sanctions administered or enforced by the Office of Foreign Assets Control of the United States Treasury Department, the United Nations Security Council, the European Union, Her Majesty’s Treasury or any other relevant sanctions authority; and the Company will not directly or indirectly use the proceeds of the offering of the Notes contemplated hereby, or lend, contribute or otherwise make available such proceeds to any Subsidiary, joint venture partner or other person or entity for the purpose of financing the activities of any person currently subject to any United States sanctions administered or enforced by such authorities;

(nn) no Subsidiary is currently prohibited, directly or indirectly, from paying any dividends to the Company, from making any other distribution on such Subsidiary’s capital stock, from repaying to the Company any loans or advances to such Subsidiary from the Company or from transferring any of such Subsidiary’s property or assets to the Company or any other Subsidiary of the Company, except, in each case, as described in the Disclosure Package and the Prospectus or as would not result in a Material Adverse Effect;

(oo) the issuance and sale of the Notes as contemplated hereby will not cause any holder of any shares of capital stock, securities convertible into or exchangeable or exercisable for capital stock or options, warrants or other rights to purchase capital stock or any other securities of the Company to have any right to acquire any shares of preferred stock of the Company;

(pp) the Company has not received any notice from the NASDAQ regarding the delisting of the Common Stock from the NASDAQ;

(qq) except pursuant to this Agreement, neither the Company nor any of the Subsidiaries has incurred any liability for any finder’s or broker’s fee or agent’s commission in connection with the execution and delivery of this Agreement, the Indenture or the Notes or the consummation of the transactions contemplated hereby or by the Disclosure Package or the Prospectus;

(rr) neither the Company nor any of the Subsidiaries nor, to the Company’s knowledge, any of their respective directors, officers, affiliates or controlling persons has taken, directly or indirectly, any action designed to or that would reasonably be expected to cause or result in the stabilization or manipulation of the price of any security of the Company to facilitate the sale or resale of the Notes or the Shares issuable upon conversion of the Notes; and

(ss) Neither the Company nor any Subsidiary directly or indirectly controls, is controlled by, or is under common control with (within the meaning of FINRA 5121), or is an associated person (within the meaning of Article I, Section 1(rr) of the By-laws of FINRA) of, any member firm of FINRA.

In addition, any certificate signed by any officer of the Company or any of the Subsidiaries and delivered to any Underwriter or counsel for the Underwriters in connection with the offering of the Notes shall be deemed to be a representation and warranty by the Company, as to matters covered thereby, to each Underwriter.

4. Certain Covenants of the Company. The Company hereby agrees:

(a) to furnish such information as may be required and otherwise to cooperate in qualifying the Notes and the Shares for offering and sale under the securities or blue sky laws of such states or other jurisdictions as you may designate and to maintain such qualifications in effect so long as you may reasonably request for the distribution of the Notes and the Shares; provided, however, that the Company shall not be required to qualify as a foreign corporation, to subject itself to taxation in any foreign jurisdiction or to consent to the service of process under the laws of any such jurisdiction (except service of process with respect to the offering and sale of the Notes or the Shares); and to promptly advise you of the receipt by the Company of any notification with respect to the suspension of the qualification of the Notes or the Shares for offer or sale in any jurisdiction or the initiation or threatening of any proceeding for such purpose;

(b) to make available to the Underwriters in New York City, as soon as practicable after this Agreement becomes effective, and thereafter from time to time to furnish to the

Underwriters, as many copies of the Prospectus (or of the Prospectus as amended or supplemented if the Company shall have made any amendments or supplements thereto after the effective date of the Registration Statement) as the Underwriters may reasonably request for the purposes contemplated by the Act; in case any Underwriter is required to deliver (whether physically or through compliance with Rule 172 under the Act or any similar rule), in connection with the sale of the Notes, a prospectus after the nine-month period referred to in Section 10(a)(3) of the Act, the Company will prepare, at its expense, promptly upon request such amendment or amendments to the Registration Statement and the Prospectus as may be necessary to permit compliance with the requirements of Section 10(a)(3) of the Act;

(c) if, at the time this Agreement is executed and delivered, it is necessary for a post-effective amendment to the Registration Statement or a Registration Statement under Rule 462(b) under the Act to be filed with the Commission and become effective before the Notes may be sold, the Company will use its reasonable best efforts to cause such post-effective amendment or such Registration Statement to be filed and become effective, and will pay any applicable fees in accordance with the Act, as soon as possible; and the Company will advise you promptly and, if requested by you, will confirm such advice in writing, (i) when such post-effective amendment or such Registration Statement has become effective, and (ii) if Rule 430A under the Act is used, when the Prospectus is filed with the Commission pursuant to Rule 424(b) under the Act (which the Company agrees to file in a timely manner in accordance with such Rules);

(d) if, at any time during the period when a prospectus is required by the Act to be delivered (whether physically or through compliance with Rule 172 under the Act or any similar rule) in connection with any sale of Notes, the Registration Statement shall cease to comply with the requirements of the Act with respect to eligibility for the use of the form on which the Registration Statement was filed with the Commission, to (i) promptly notify you, (ii) upon your request, to promptly file with the Commission a new registration statement under the Act, registering the offer and sale of the Notes and the Shares, or a post-effective amendment or supplement to the Registration Statement, which new registration statement or post-effective amendment or supplement shall comply with the requirements of the Act and shall be in a form reasonably satisfactory to you, (iii) use its reasonable best efforts to cause such new registration statement or post-effective amendment or supplement to become effective under the Act as soon as practicable, (iv) promptly notify you of such effectiveness and (v) take all other action necessary or appropriate to permit the public offering and sale of the Notes and the Shares to continue as contemplated in the Prospectus; all references herein to the Registration Statement shall be deemed to include each such new registration statement or post-effective amendment or supplement, if any;

satisfactory to you; and (ii) use its reasonable best efforts to cause such new registration statement to become effective under the Act as soon as practicable, but in any event within 180 days after such third anniversary and promptly notify you of such effectiveness; the Company shall take all other action necessary or appropriate to permit the public offering and sale of the Notes to continue as contemplated in the Prospectus; all references herein to the Registration Statement shall be deemed to include each such new registration statement, if any;

(g) subject to Section 4(f) hereof, to timely file all reports and documents and any preliminary or definitive proxy or information statement required to be filed by the Company with the Commission in order to comply with the Exchange Act for so long as a prospectus is required by the Act to be delivered (whether physically or through compliance with Rule 172 under the Act or any similar rule) in connection with any sale of Notes; and for so long as a prospectus is required by the Act to be delivered (whether physically or through compliance with Rule 172 under the Act or any similar rule) in connection with any sale of Notes, to provide you with a copy of such reports and statements and other documents to be filed by the Company pursuant to Section 13, 14 or 15(d) of the Exchange Act during such period a reasonable amount of time prior to any proposed filing, and, except as reasonably determined by Company counsel to be required by law, to file no such report, statement or document to which you shall have reasonably objected in writing; and to promptly notify you of such filing;

(h) to advise the Underwriters promptly of the happening of any event known to the Company within the period during which a prospectus is required by the Act to be delivered (whether physically or through compliance with Rule 172 under the Act or any similar rule) in connection with any sale of Notes, which event would require the making of any change in the Prospectus then being used so that the Prospectus would not include an untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they are made, not misleading, and to advise the Underwriters promptly if, during such period, it shall become necessary to amend or supplement the Prospectus to cause the Prospectus to comply with the requirements of the Act, and, in each case, during such time, subject to Section 4(f) hereof, to prepare and furnish, at the Company’s expense, to the Underwriters promptly such amendments or supplements to such Prospectus as may be necessary to reflect any such change or to effect such compliance;

(l) to apply the net proceeds from the sale of the Notes in the manner set forth under the caption “Use of proceeds” in the Prospectus;

(m) to pay all costs, expenses, fees and taxes in connection with (i) the preparation and filing of the Registration Statement, each Basic Prospectus, each Pre-Pricing Prospectus, the Prospectus Supplement, the Prospectus, each Permitted Free Writing Prospectus, if any, and any amendments or supplements thereto, and the printing and furnishing of copies of each thereof to the Underwriters and to dealers (including costs of mailing and shipment), (ii) the registration, issue, sale and delivery of the Notes and the Shares including any stock or transfer taxes and stamp or similar duties payable upon the sale, issuance or delivery of the Notes or the Shares to the Underwriters, (iii) the qualification of the Notes and the Shares for offering and sale under state or foreign laws and the determination of their eligibility for investment under state or foreign law (including the reasonable legal fees and the filing fees and other disbursements of counsel for the Underwriters incurred in connection with such qualifications and determinations) and the printing and furnishing of copies of any blue sky surveys or legal investment surveys to the Underwriters and to dealers, (iv) any listing of the Notes or the Shares on any securities exchange or qualification of the Shares for quotation on the NASDAQ and any registration under the Exchange Act, (v) any filing for review of the public offering of the Notes and the Shares by FINRA, including the reasonable legal fees and the filing fees and other disbursements of counsel to the Underwriters relating to FINRA matters, (vi) the costs and expenses of the Company relating to presentations or meetings undertaken in connection with the marketing of the offering and sale of the Notes to prospective investors and the Underwriters’ sales forces, 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, lodging and other expenses incurred by the officers of the Company and

any such consultants, and the cost of any aircraft chartered in connection with the road show, (vii) any fees payable to investment rating agencies with respect to the rating of the Notes; (viii) the costs and charges of the Trustee and any transfer agent, registrar or depositary; and (ix) the performance of the Company’s other obligations hereunder.

(n) to comply with Rule 433(d) under the Act (without reliance on Rule 164(b) under the Act) and with Rule 433(g) under the Act;

(o) beginning on the date hereof and ending on, and including, the date that is 90 days after the date of the Prospectus Supplement (the “Lock-Up Period”), without the prior written consent of UBS Securities LLC, not to (i) issue, sell, offer to sell, contract or agree to sell, hypothecate, pledge, grant any option to purchase or otherwise dispose of or agree to dispose of, directly or indirectly, or establish or increase a put equivalent position or liquidate or decrease a call equivalent position within the meaning of Section 16 of the Exchange Act and the rules and regulations of the Commission promulgated thereunder, with respect to, any Common Stock, any debt securities of the Company or any other securities of the Company that are substantially similar to Common Stock or the Notes, or any securities convertible into or exchangeable or exercisable for, or any warrants or other rights to purchase, the foregoing, (ii) file or cause to become effective a registration statement under the Act relating to the offer and sale of any Common Stock, any debt securities of the Company or any other securities of the Company that are substantially similar to Common Stock or the Notes, or any securities convertible into or exchangeable or exercisable for, or any warrants or other rights to purchase, the foregoing, (iii) enter into any swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of Common Stock, any debt securities of the Company or any other securities of the Company that are substantially similar to Common Stock or the Notes, or any securities convertible into or exchangeable or exercisable for, or any warrants or other rights to purchase, the foregoing, whether any such transaction is to be settled by delivery of Common Stock or such other securities, in cash or otherwise or (iv) publicly announce an intention to effect any transaction specified in clause (i), (ii) or (iii), except, in each case, for (A) the registration of the offer and sale, and the issuance, of the Notes and the Shares as contemplated by this Agreement, (B) issuances of Common Stock upon the exercise of options or warrants disclosed as outstanding in the Registration Statement (excluding the exhibits thereto), the Disclosure Package and the Prospectus, (C) the issuance of Common Stock or any equity awards (including the issuance of Common Stock upon exercise or settlement of such equity awards) pursuant to the Company’s equity incentive plans, employee stock purchase plan or other employee compensation plans as such plans are in existence on the date hereof and described in the Registration Statement (excluding the exhibits thereto), the Disclosure Package and the Prospectus, (D) the filing of registration statements on Form S-8 relating to shares of Common Stock which may be issued pursuant to existing equity incentive plans, employee stock purchase plans or other employee compensation plans disclosed in the Disclosure Package and the Prospectus, (E) the registration under the Act and issuance and sale by the Company of shares of Common Stock in connection with any acquisitions or strategic investments by the Company or any of its Subsidiaries as long as (i) the aggregate amount of any such shares does not exceed 15% of the number of shares of Common Stock outstanding immediately after the issuance and sale of the shares of Common Stock in the concurrent offering of Common Stock contemplated by the Registration Statement and (ii) each of the recipients of any such shares execute a Lock-Up Agreement for the remainder of the Lock-Up Period, and (F) the public

offering by the Company of up to 14,375,000 shares of Common Stock in the concurrent Common Stock offering; provided, however, that if (a) during the period that begins on the date that is fifteen (15) calendar days plus three (3) business days before the last day of the Lock-Up Period and ends on the last day of the Lock-Up Period, the Company issues an earnings release or material news or a material event relating to the Company occurs; or (b) prior to the expiration of the Lock-Up Period, the Company announces that it will release earnings results during the sixteen (16) day period beginning on the last day of the Lock-Up Period, then the restrictions imposed by this Section 4(n) shall continue to apply until the expiration of the date that is fifteen (15) calendar days plus three (3) business days after the date on which the issuance of the earnings release or the material news or material event occurs;

(p) prior to the time of purchase, except as required by law, to issue no press release or other communication, directly or indirectly, and hold no press conferences with respect to the Company or any Subsidiary, the financial condition, results of operations, business, properties, assets, or liabilities of the Company or any Subsidiary, or the offering of the Notes and the Shares, without your prior consent (such consent not to be unreasonably withheld);

(q) not, at any time at or after the execution of this Agreement, to, directly or indirectly, offer or sell any Notes or the Shares by means of any “prospectus” (within the meaning of the Act), or use any “prospectus” (within the meaning of the Act) in connection with the offer or sale of the Notes or the Shares, in each case other than the Prospectus and each Permitted Free Writing Prospectus;

(s) to use its reasonable best efforts to cause the Shares issuable upon conversion of the Notes to be listed for quotation on the NASDAQ and to maintain such listing for quotation on the NASDAQ;

(t) to maintain a transfer agent and, if necessary under the jurisdiction of incorporation of the Company, a registrar for the Common Stock;

(u) to at all times reserve and keep available, free of preemptive rights, shares of Common Stock in an amount sufficient to satisfy the Company’s obligations to issue Shares upon conversion of the Notes; and

(v) to (i) use its reasonable best efforts to cause the Notes and the Shares issuable upon conversion of the Notes to be included in the book-entry settlement system of the DTC and (ii) comply with all of its obligations set forth in the representations letter of the Company to the DTC relating to such inclusion.

5. Reimbursement of the Underwriters’ Expenses. If, after the execution and delivery of this Agreement, the Notes are not delivered for any reason other than the termination of this Agreement pursuant to the fifth paragraph of Section 8 hereof or the default by one or more of the Underwriters in its or their respective obligations hereunder, the Company shall, in addition

to paying the amounts described in Section 4(l) hereof, reimburse the Underwriters for all of their reasonably incurred out-of-pocket expenses, including the reasonable fees and disbursements of their counsel. Except as set forth in Section 4(l), Section 9 and this Section 5, the Underwriters will bear all of their own costs and expenses, including the fees and disbursements of their counsel and any stock transfer taxes applicable to the resale of any Notes by them.

(e) No Prospectus or amendment or supplement to the Registration Statement or the Prospectus shall have been filed to which you shall have objected in writing.

(f) The Registration Statement and any registration statement required to be filed, prior to the sale of the Notes or the Shares, under the Act pursuant to Rule 462(b) shall have been filed and shall have become effective under the Act. The Prospectus shall have been filed with the Commission pursuant to Rule 424(b) under the Act at or before 5:30 P.M., New York City time, on the second full business day after the date of this Agreement (or such earlier time as may be required under the Act).

(i) You shall have received copies, duly executed by the Company and the Trustee, of the Indenture.

(j) You shall have received each of the signed Lock-Up Agreements referred to in Section 3(w) hereof.

(k) The Company shall have furnished to you such other documents and certificates as to the accuracy and completeness in all material respects of any statement in the Registration Statement, any Pre-Pricing Prospectus, the Prospectus or any Permitted Free Writing Prospectus as of the time of purchase and, if applicable, the additional time of purchase, as you may reasonably request.

(l) The Company shall have filed a listing of additional shares notification with the NASDAQ in connection with issuance of the Shares, and shall have received no objections thereto from the NASDAQ.

(m) The Notes shall be included in the book-entry settlement system of the DTC, subject only to notice of issuance at or prior to the time of purchase.

(n) There shall exist no event or condition which would constitute a default or an event of default under the Notes or the Indenture.

(o) FINRA shall not have raised any objection with respect to the fairness or reasonableness of the underwriting, or other arrangements of the transactions, contemplated hereby.

7. Effective Date of Agreement; Termination. This Agreement shall become effective when the parties hereto have executed and delivered this Agreement.

The obligations of the several Underwriters hereunder shall be subject to termination in the absolute discretion of the Managing Underwriters, if (a) since the time of execution of this Agreement or the earlier respective dates as of which information is given in the Disclosure Package and the Prospectus, there has been any change or any development involving a prospective change in the business, properties, management, condition (financial or otherwise) or results of operations of the Company and the Subsidiaries taken as a whole, the effect of which change or development is, in the sole judgment of the Managing Underwriters, so material and adverse as to make it impractical or inadvisable to proceed with the public offering or the delivery of the Notes on the terms and in the manner contemplated in the Disclosure Package and the Prospectus, or (b) since the time of execution of this Agreement, there shall have occurred: (i) a suspension or material limitation in trading in securities generally on the NYSE, the American Stock Exchange or the NASDAQ; (ii) a suspension or material limitation in trading in the Company’s securities on the NASDAQ; (iii) a general moratorium on commercial banking activities declared by either federal or New York State authorities or a material disruption in commercial banking or securities settlement or clearance services in the United States; (iv) an outbreak or escalation of hostilities or acts of terrorism involving the United States or a declaration by the United States of a national emergency or war; or (v) any other calamity or crisis or any change in financial, political or economic conditions in the United States or elsewhere, if the effect of any such event specified in clause (iv) or (v), in the sole judgment of the Managing Underwriters, makes it impractical or inadvisable to proceed with the public offering or the delivery of the Notes on the terms and in the manner contemplated in the Disclosure Package and the Prospectus.

If the Managing Underwriters elect to terminate this Agreement as provided in this Section 7, the Company and each other Underwriter shall be notified promptly in writing.

If the sale to the Underwriters of the Notes, as contemplated by this Agreement, is not carried out by the Underwriters for any reason permitted under this Agreement, or if such sale is not carried out because the Company shall be unable to comply with any of the terms of this Agreement, the Company shall not be under any obligation or liability under this Agreement (except to the extent provided in Sections 4(l), 5 and 9 hereof), and the Underwriters shall be under no obligation or liability to the Company under this Agreement (except to the extent provided in Section 9 hereof) or to one another hereunder.

8. Increase in Underwriters’ Commitments. Subject to Sections 6 and 7 hereof, if any Underwriter shall default in its obligation to take up and pay for the Firm Notes to be purchased by it hereunder (otherwise than for a failure of a condition set forth in Section 6 hereof or a reason sufficient to justify the termination of this Agreement under the provisions of Section 7 hereof) (the “Defaulted Notes”) and if the aggregate principal amount of the Defaulted Notes which all Underwriters so defaulting shall have agreed but failed to take up and pay for does not exceed 10% of the total aggregate principal amount of Firm Notes to be purchased at such time, the non-defaulting Underwriters (including the Underwriters, if any, substituted in the manner set forth below) shall take up and pay for (in addition to the aggregate principal amount of Firm Notes they are obligated to purchase pursuant to Section 1 hereof) the aggregate principal

amount of the Defaulted Notes agreed to be purchased by all such defaulting Underwriters, as hereinafter provided. Such Defaulted Notes shall be taken up and paid for by such non-defaulting Underwriters in such amount or amounts as you may designate with the consent of each Underwriter so designated or, in the event no such designation is made, such Defaulted Notes shall be taken up and paid for by all non-defaulting Underwriters pro rata in proportion to the aggregate principal amount of Firm Notes set forth opposite the names of such non-defaulting Underwriters in Schedule A.

Without relieving any defaulting Underwriter from its obligations hereunder, the Company agrees with the non-defaulting Underwriters that they will not sell any Firm Notes hereunder unless all of the Firm Notes are purchased by the Underwriters (or by substituted Underwriters selected by you with the approval of the Company or selected by the Company with your approval).

If the aggregate principal amount of the Defaulted Notes which the defaulting Underwriter or Underwriters agreed to purchase exceeds 10% of the total aggregate principal amount of Firm Notes which all Underwriters agreed to purchase at the time of purchase hereunder at such time, and if neither the non-defaulting Underwriters nor the Company shall make arrangements within the five business day period stated above for the purchase of all the Firm Notes which the defaulting Underwriter or Underwriters agreed to purchase hereunder at such time, this Agreement shall terminate without further act or deed and without any liability with respect thereto on the part of the Company to any Underwriter and without any liability with respect thereto on the part of any non-defaulting Underwriter to the Company. Nothing in this paragraph, and no action taken hereunder, shall relieve any defaulting Underwriter from liability in respect of any default of such Underwriter under this Agreement.

9. Indemnity and Contribution.

contained in the Registration Statement or arises out of or is based upon any omission or alleged omission to state a material fact required to be stated therein or necessary to make the statements therein not misleading, except insofar as any such loss, damage, expense, liability or claim arises out of or is based upon any untrue statement or alleged untrue statement of a material fact contained in, and in conformity with information concerning such Underwriter furnished in writing by or on behalf of such Underwriter through you to the Company expressly for use in, the Registration Statement or arises out of or is based upon any omission or alleged omission to state a material fact in the Registration Statement in connection with such information, which material fact was not contained in such information and which material fact was required to be stated in such Registration Statement or was necessary to make such information not misleading or (ii) any untrue statement or alleged untrue statement of a material fact included in any Prospectus (the term Prospectus for the purpose of this Section 9 being deemed to include any Basic Prospectus, any Pre-Pricing Prospectus, the Prospectus Supplement, the Prospectus and any amendments or supplements to the foregoing), in any Covered Free Writing Prospectus, in any “issuer information” (as defined in Rule 433 under the Act) of the Company, which “issuer information” is required to be, or is, filed with the Commission, or in any Prospectus together with any combination of one or more of the Covered Free Writing Prospectuses, if any, or arises out of or is based upon any omission or alleged omission 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, except, with respect to such Prospectus or any Permitted Free Writing Prospectus, insofar as any such loss, damage, expense, liability or claim arises out of or is based upon any untrue statement or alleged untrue statement of a material fact contained in, and in conformity with information concerning such Underwriter furnished in writing by or on behalf of such Underwriter through you to the Company expressly for use in, such Prospectus or Permitted Free Writing Prospectus or arises out of or is based upon any omission or alleged omission to state a material fact in such Prospectus or Permitted Free Writing Prospectus in connection with such information, which material fact was not contained in such information and which material fact was necessary in order to make the statements in such information, in the light of the circumstances under which they were made, not misleading, and will reimburse each Underwriter “indemnified party” (defined below) for any legal or other fees or expenses actually and reasonably incurred by such indemnified party in connection with investigating or defending against any loss, damage, expense, liability, claim, action, litigation, investigation or proceeding whatsoever (whether or not such indemnified party is a party thereto), whether threatened or commenced, and in connection with the enforcement of this provision with respect to the above as such fees and expenses are incurred.

Company), or arises out of or is based upon any omission or alleged omission to state a material fact in such Registration Statement in connection with such information, which material fact was not contained in such information and which material fact was required to be stated in such Registration Statement or was necessary to make such information not misleading or (ii) any untrue statement or alleged untrue statement of a material fact contained in, and in conformity with information concerning such Underwriter furnished in writing by or on behalf of such Underwriter through you to the Company expressly for use in, a Prospectus or a Permitted Free Writing Prospectus, or arises out of or is based upon any omission or alleged omission to state a material fact in such Prospectus or Permitted Free Writing Prospectus in connection with such information, which material fact was not contained in such information and which material fact was necessary in order to make the statements in such information, in the light of the circumstances under which they were made, not misleading.

such request prior to the date of such settlement and (iii) such indemnified party shall have given the indemnifying party at least 30 days’ prior notice of its intention to settle. No indemnifying party shall, without the prior written consent of the indemnified party, effect any settlement of any pending or threatened Proceeding in respect of which any indemnified party is or could have been a party and indemnity could have been sought hereunder by such indemnified party, unless such settlement includes an unconditional release of such indemnified party from all liability on claims that are the subject matter of such Proceeding and does not include an admission of fault or culpability or a failure to act by or on behalf of such indemnified party.

(d) If the indemnification provided for in this Section 9 is unavailable to an indemnified party under subsections (a) and (b) of this Section 9 or insufficient to hold an indemnified party harmless in respect of any losses, damages, expenses, liabilities or claims referred to therein, then each applicable indemnifying party shall contribute to the amount paid or payable by such indemnified party as a result of such losses, damages, expenses, liabilities or claims (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 Notes or (ii) if the allocation provided by clause (i) above is not permitted by applicable law, in such proportion as is appropriate to reflect not only the relative benefits referred to in clause (i) above but also the relative fault of the Company on the one hand and of the Underwriters on the other in connection with the statements or omissions which resulted in such losses, damages, expenses, liabilities or claims, 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 shall be deemed to be in the same respective proportions as the total proceeds from the offering (net of underwriting discounts and commissions but before deducting expenses) received by the Company, and the total underwriting discounts and commissions received by the Underwriters, bear to the gross proceeds to the Company from the offering of the Notes (before deducting underwriting discounts and commissions and other expenses). The relative fault of the Company on the one hand and of the Underwriters on the other shall be determined by reference to, among other things, whether the untrue statement or alleged untrue statement of a material fact or omission or alleged omission 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 amount paid or payable by a party as a result of the losses, damages, expenses, liabilities and claims referred to in this subsection shall be deemed to include any legal or other fees or expenses reasonably incurred by such party in connection with investigating, preparing to defend or defending any Proceeding.

(e) The Company and the Underwriters agree that it would not be just and equitable if contribution pursuant to this Section 9 were determined by pro rata allocation (even if the Underwriters were treated as one entity for such purpose) or by any other method of allocation that does not take account of the equitable considerations referred to in subsection (d) above. Notwithstanding the provisions of this Section 9, no Underwriter shall be required to contribute any amount in excess of the amount by which the total price at which the Notes underwritten by such Underwriter and distributed to the public were offered to the public exceeds the amount of any damage which such Underwriter has otherwise been required to pay by reason of such untrue statement or alleged untrue statement or omission or alleged omission. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Act) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation. The Underwriters’ obligations to contribute pursuant to this Section 9 are several in proportion to their respective underwriting commitments and not joint.

(f) The indemnity and contribution agreements contained in this Section 9 and the covenants, warranties and representations of the Company contained in this Agreement shall remain in full force and effect regardless of any investigation made by or on behalf of any Underwriter, or any of their respective partners, agents, directors, officers or members or any person (including each partner, officer, director or member of such person) who controls any Underwriter within the meaning of Section 15 of the Act or Section 20 of the Exchange Act, or by or on behalf of the Company, its directors or officers or any person who controls the Company within the meaning of Section 15 of the Act or Section 20 of the Exchange Act, and shall survive any termination of this Agreement or the issuance and delivery of the Notes. The Company and each Underwriter agree promptly to notify each other of the commencement of any Proceeding against it and, in the case of the Company, against any of the Company’s officers or directors in connection with the issuance and sale of the Notes, or in connection with the Registration Statement, any Basic Prospectus, any Pre-Pricing Prospectus, the Prospectus Supplement, the Prospectus or any Permitted Free Writing Prospectus.

10. Information Furnished by the Underwriters. The statements set forth in the last paragraph on the cover page of the Prospectus, the selling concession appearing in the first paragraph under the heading “Commissions and Discounts” under the caption “Underwriting” in the Prospectus and the statements set forth in the paragraphs under the heading “Price Stabilization, Short Positions” under the caption “Underwriting” in the Prospectus, only insofar as such statements relate to the amount of selling concession or to over-allotment and stabilization activities that may be undertaken by the Underwriters, constitute the only information furnished by or on behalf of the Underwriters, as such information is referred to in Sections 3 and 9 hereof.

13. Submission to Jurisdiction. Except as set forth below, no Claim may be commenced, prosecuted or continued in any court other than the courts of the State of New York located in

17. Counterparts. This Agreement may be signed by the parties in one or more counterparts which together shall constitute one and the same agreement among the parties.

[The Remainder of This Page Intentionally Left Blank; Signature Page Follows]


Very truly yours,

GEVO, INC.

By:	/s/ Patrick R. Gruber
	Name:	Patrick R. Gruber
	Title:	Chief Executive Officer


Accepted and agreed to as of the date first above written, on behalf of themselves and the other several Underwriters named in Schedule A

UBS SECURITIES LLC
PIPER JAFFRAY & CO.

By:	UBS SECURITIES LLC

By:	/s/ Jamey Escaler
	Name:	Jamey Escaler
	Title:	Managing Director

By:	UBS SECURITIES LLC

By:	/s/ Vishal Jain
	Name:	Vishal Jain
	Title:	Director

By:	PIPER JAFFRAY & CO.

By:	/s/ J. Thomas Halverson, Jr.
	Name:	J. Thomas Halverson, Jr.
	Title:	Managing Director

SCHEDULE A


Underwriter	Aggregate Principal Amount of Firm Notes
UBS SECURITIES LLC	$	21,800,000
PIPER JAFFRAY & CO.		18,200,000


Total	$	40,000,000

SCHEDULE B

Permitted Free Writing Prospectuses

1.	Free Writing Prospectus filed by the Company with the Securities and Exchange Commission on June 28, 2012.

2.	Free Writing Prospectus filed by the Company with the Securities and Exchange Commission on June 29, 2012.

EXHIBIT A

Lock-Up Agreement

, 2012

UBS Securities LLC

Piper Jaffray & Co.

Together with the other Underwriters

Named in Schedule A to the Underwriting Agreement

referred to herein

c/o UBS Securities LLC

299 Park Avenue

New York, New York 10171-0026

Ladies and Gentlemen:

In order to induce you to enter into the Underwriting Agreement, the undersigned agrees that, for a period (the “Lock-Up Period”) beginning on the date hereof and ending on and including, the date that is 90 days after the date of the final prospectus relating to the Offering, the undersigned will not, without the prior written consent of UBS Securities LLC, (i) sell, offer to sell, contract or agree to sell, hypothecate, pledge, grant any option to purchase or otherwise dispose of or agree to dispose of, directly or indirectly, or file (or participate in the filing of) a registration statement with the Securities and Exchange Commission (the “Commission”) in respect of, or establish or increase a put equivalent position or liquidate or decrease a call equivalent position within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended, and the rules and regulations of the Commission promulgated thereunder (the “Exchange Act”) with respect to, any common stock (the “Common Stock”) of the Company, any debt securities of the Company or any other securities of the Company that are substantially similar to Common Stock or the Notes, or any securities convertible into or exchangeable or exercisable for, or any warrants or other rights to purchase, the foregoing, (ii) enter into any swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of Common Stock, any debt securities of the Company or any other securities of the Company that are substantially similar to Common Stock or the Notes, or any securities convertible into or exchangeable or exercisable for, or any warrants or other rights to purchase, the foregoing, whether any such transaction is to be settled by delivery of Common Stock or such other securities, in cash or otherwise or (iii) publicly announce an intention to effect any transaction specified in clause (i) or (ii).

The foregoing sentence shall not apply to the following transfers:

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(b) bona fide gifts, provided the recipient thereof agrees in writing with the Underwriters to be bound by the terms of this Lock-Up Agreement;

(h) sales of shares of Common Stock pursuant to trading plans pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended, in existence on the date hereof; and

(i) transfers pursuant to a sale or an offer to purchase 100% of the Common Stock, whether pursuant to a merger, tender offer or otherwise, to a third party or group of third parties.

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* * *

Yours very truly,

Name:

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Opinion of Paul Hastings LLP

Exhibit 5.1

LOGO


July 2, 2012

Gevo, Inc.

345 Inverness Drive South

Building C, Suite 310

Englewood, Colorado 80112

Ladies and Gentlemen:

We have acted as counsel to Gevo, Inc., a Delaware corporation (the “Company”), in connection with the issuance and sale of an aggregate of 12,500,000 shares (the “Shares”) of the Company’s common stock, par value $0.01 per share, and up to an additional 1,875,000 shares of common stock that may be sold pursuant to the exercise of an over-allotment option, pursuant to a Registration Statement on Form S-3 (File No. 333-180097) (the “Registration Statement”), filed with the Securities and Exchange Commission (the “Commission”) under the Securities Act of 1933, as amended (the “Act”), the prospectus dated May 8, 2012 (the “Base Prospectus”) and the prospectus supplement to be filed with the Commission pursuant to Rule 424(b) under the Act (the “Prospectus Supplement”). The Base Prospectus and the Prospectus Supplement are collectively referred to as the “Prospectus.”

As such counsel and for purposes of our opinion set forth below, we have examined and relied upon originals or copies, certified or otherwise identified to our satisfaction, of such documents, resolutions, certificates and instruments of the Company, certificates of public officials, statutes, records and such other instruments and documents as we have deemed necessary or appropriate as a basis for the opinion set forth herein, including, without limitation: (i) the Registration Statement; (ii) the Prospectus; (iii) the Company’s Amended and Restated Certificate of Incorporation, certified by the Secretary of State of the State of Delaware; (iv) the Company’s Amended and Restated Bylaws, certified by the Secretary of the Company; (v) a certificate of the Secretary of State of the State of Delaware as to the incorporation and good standing of the Company under the laws of the State of Delaware as of June 26, 2012; (vi) certain resolutions of the board of directors of the Company adopted at a meeting held on March 14, 2012; and (vii) certain resolutions of the pricing committee of the board of directors adopted at a meeting held on June 28, 2012.

In addition, we have made such investigations of law as we have deemed necessary or appropriate as a basis for the opinion set forth herein.

LOGO

July 2, 2012

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agreements, instruments, corporate records, certificates and other documents submitted to us; (iii) the authenticity and completeness of all agreements, instruments, corporate records, certificates and other documents submitted to us as originals; (iv) that all agreements, instruments, corporate records, certificates and other documents submitted to us as certified, electronic, facsimile, conformed, photostatic or other copies conform to authentic originals thereof, and that such originals are authentic and complete; (v) the due authorization, execution and delivery of all agreements, instruments, certificates and other documents by all parties thereto; (vi) that no documents submitted to us have been amended or terminated orally or in writing except as has been disclosed to us; (vii) that the statements contained in the certificates and comparable documents of public officials, officers and representatives of the Company and other persons on which we have relied for the purposes of this opinion letter are true and correct; and (viii) that each of the officers and directors of the Company has properly exercised his or her fiduciary duties. As to all questions of fact material to this opinion letter and as to the materiality of any fact or other matter referred to herein, we have relied (without independent investigation) upon certificates or comparable documents of officers and representatives of the Company.

Based upon the foregoing, and in reliance thereon, and subject to the limitations, qualifications and exceptions set forth herein, we are of the opinion that the Shares are duly authorized and, upon issuance, delivery and payment therefor in the manner contemplated by the Registration Statement and the Prospectus, will be validly issued, fully paid and nonassessable.

Without limiting any of the other limitations, exceptions and qualifications stated elsewhere herein, we express no opinion with regard to the applicability or effect of the law of any jurisdiction other than, as in effect as of the date of this opinion letter, the General Corporation Law of the State of Delaware.

This opinion letter deals only with the specified legal issues expressly addressed herein, and you should not infer any opinion that is not explicitly stated herein from any matter addressed in this opinion letter.

This opinion letter is rendered solely to you in connection with the issuance and delivery of the Shares. This opinion letter is rendered to you as of the date hereof, and we assume no obligation to advise you or any other person with regard to any change after the date hereof in the circumstances or the law that may bear on the matters set forth herein even if the change may affect the legal analysis, legal conclusion or other matters in this opinion letter.

We consent to the filing of this opinion letter as an exhibit to the Registration Statement and to the reference to our firm under the caption “Legal Matters” in the Prospectus Supplement. In giving such consent, we do not admit that we are within the category of persons whose consent is required under Section 7 of the Act or the rules and regulations of the Commission thereunder.

Very truly yours,

/s/ Paul Hastings LLP

Opinion of Paul Hastings LLP

Exhibit 5.2

LOGO


July 2, 2012

Gevo, Inc.

345 Inverness Drive South

Building C, Suite 310

Englewood, Colorado 80112

Ladies and Gentlemen:

We have acted as counsel to Gevo, Inc., a Delaware corporation (the “Company”), in connection with the issuance and sale of up to $40,000,000 aggregate principal amount of the Company’s 7.5% Convertible Senior Notes due 2022 (the “Firm Notes”), and up to $5,000,000 aggregate principal amount of the Company’s 7.5% Convertible Senior Notes due 2022 that may be sold pursuant to the exercise of an over-allotment option (the “Additional Notes” and, together with the Firm Notes, the “Notes”), pursuant to an Underwriting Agreement entered into among the Company, UBS Securities LLC and Piper Jaffray & Co. (the “Underwriting Agreement”).

The Notes are registered pursuant to a Registration Statement on Form S-3 (File No. 333-180097) (the “Registration Statement”), filed with the Securities and Exchange Commission (the “Commission”) under the Securities Act of 1933, as amended (the “Act”), the prospectus dated May 8, 2012 (the “Base Prospectus”) and the prospectus supplement to be filed with the Commission pursuant to Rule 424(b) under the Act (the “Prospectus Supplement”). The Base Prospectus and the Prospectus Supplement are collectively referred to as the “Prospectus.”

The Notes will be issued under an indenture to be dated July 5, 2012 (the “Indenture”), as supplemented by a supplemental indenture to be dated July 5, 2012 (the “Supplemental Indenture”).

This opinion letter is being delivered in accordance with the requirements of Item 601(b)(5) of Regulation S-K under the Securities Act.

As such counsel to the Company in connection with the proposed issuance and sale of the Notes and the issuance of the shares of the Company’s common stock, par value $.01 per share (the “Common Stock”), and accompanying rights to be received by the holders of the Notes upon conversion thereof (the “Conversion Shares”), and for purposes of our opinion set forth below, we have examined and relied upon originals or copies, certified or otherwise identified to our satisfaction, of such documents, resolutions, certificates and instruments of the Company, certificates of public officials, statutes, records and such other instruments and documents as we have deemed necessary or appropriate as a basis for the opinion set forth herein, including, without limitation: (i) the Registration Statement; (ii) the Prospectus; (iii) the Indenture; (iv) the Supplemental Indenture; (v) the Company’s Amended and Restated Certificate of Incorporation, certified by the Secretary of State of the State of Delaware; (vi) the Company’s Amended and Restated Bylaws, certified by the Secretary of the Company; (vii) a certificate of the Secretary of State of the State of Delaware as to the incorporation and good standing of the Company under the laws of the State of Delaware as of June 26, 2012; (viii) certain resolutions adopted by the board of directors of the Company on March 14, 2012 and June 12, 2012; and (ix) certain resolutions adopted by the pricing committee of the board of directors of the Company on June 28, 2012.

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In addition, we have made such investigations of law as we have deemed necessary or appropriate as a basis for the opinion set forth herein.

In such examination, we have assumed, without independent investigation: (i) the genuineness of all signatures on all agreements, instruments, corporate records, certificates and other documents submitted to us; (ii) the legal capacity and authority of all persons or entities executing all agreements, instruments, corporate records, certificates and other documents submitted to us; (iii) the authenticity and completeness of all agreements, instruments, corporate records, certificates and other documents submitted to us as originals; (iv) that all agreements, instruments, corporate records, certificates and other documents submitted to us as certified, electronic, facsimile, conformed, photostatic or other copies conform to authentic originals thereof, and that such originals are authentic and complete; (v) the due authorization, execution and delivery of all agreements, instruments, certificates and other documents by all parties thereto; (vi) that no documents submitted to us have been amended or terminated orally or in writing except as has been disclosed to us; (vii) that the statements contained in the certificates and comparable documents of public officials, officers and representatives of the Company and other persons on which we have relied for the purposes of this opinion letter are true and correct; and (viii) that each of the officers and directors of the Company has properly exercised his or her fiduciary duties. As to all questions of fact material to this opinion letter and as to the materiality of any fact or other matter referred to herein, we have relied (without independent investigation) upon certificates or comparable documents of officers and representatives of the Company.

Based upon the foregoing, having regard for such legal considerations as we deem relevant and assuming that (i) the Indenture has been duly authorized, executed and delivered by, and represents the valid and binding obligation of, Wells Fargo Bank, National Association (the “Trustee”); and (ii) the Notes have been duly authenticated by the Trustee, we are of the opinion that:

(1) The Notes have been authorized and, when executed, authenticated and issued in accordance with the provisions of the Indenture and delivered to and paid for by the Underwriters and issued pursuant to the Underwriting Agreement and the Company receives the consideration provided for in the Underwriting Agreement, will constitute valid and legally binding obligations of the Company enforceable in accordance with their terms.

(2) The Conversion Shares have been validly authorized and reserved, and, when issued and delivered upon conversion of the Notes in accordance with the terms of the Notes and the Indenture, will be validly issued, fully paid and nonassessable.

The opinions expressed herein are subject to the qualification that the enforceability of any contract or agreement may be limited by applicable bankruptcy, insolvency, fraudulent conveyance, reorganization, moratorium and similar laws affecting the enforceability of creditors’ rights generally and to court decisions with respect thereto and to general principles of equity (regardless of whether considered in a proceeding in equity or at law).

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This opinion letter is rendered to you as of the date hereof, and we assume no obligation to advise you or any other person with regard to any change after the date hereof in the circumstances or the law that may bear on the matters set forth herein even if the change may affect the legal analysis, legal conclusion or other matters in this opinion letter.

Very truly yours,

/s/ Paul Hastings LLP

Press release dated June 29, 2012.

Exhibit 99.1

LOGO

Gevo, Inc. Announces Pricing of Common Stock and Convertible Notes Offerings

ENGLEWOOD, Colo. – June 29, 2012 – Gevo, Inc. (NASDAQ: GEVO), a leading renewable chemicals and next generation biofuels company, announced today that it has priced its concurrent underwritten public offerings of common stock and 7.5% convertible senior notes due 2022.

The Company announced that it has agreed to sell 12,500,000 shares of its common stock at a public offering price of $4.95 per share. The gross proceeds to the Company from this offering are expected to be $61,875,000, before deducting underwriting discounts and commissions and other estimated offering expenses. The Company has granted the underwriters a 30-day option to purchase up to an aggregate of 1,875,000 additional shares of common stock to cover over-allotments, if any. All of the shares in the common stock offering are to be sold by Gevo.

The Company also announced the pricing of its public offering of $40,000,000 aggregate principal amount of 7.5% convertible senior notes due 2022. The gross proceeds to the Company from this offering are expected to be $40,000,000, before deducting underwriting discounts and commissions and other estimated offering expenses. The Company has granted the underwriters a 30-day option to purchase up to an additional $5,000,000 in principal amount of convertible senior notes on the same terms and conditions to cover over-allotments, if any. The convertible senior notes will pay interest semi-annually at a rate of 7.5% per year and will mature on July 1, 2022, unless earlier repurchased, converted or redeemed. The convertible senior notes will be convertible at the holder’s option into shares of the Company at an initial conversion rate of 175.6697 shares of common stock per $1,000 principal amount of convertible senior notes, equivalent to a conversion price of approximately $5.69 per share of common stock, subject to adjustment in certain circumstances.

The Company expects to use the net proceeds from the offerings to repay a portion of its outstanding long-term debt obligations, to fund the cash consideration payable to complete the retrofit of its Luverne, Minnesota plant, and to partially fund the Redfield Energy retrofit. To the extent that the net proceeds are not used for these purposes, the Company intends to use them to fund working capital and for other general corporate purposes.

The offerings were made pursuant to the Company’s shelf registration statement filed with the Securities and Exchange Commission, and are expected to close on or about July 5, 2012, subject to customary closing conditions.

In connection with the offerings, UBS Securities LLC and Piper Jaffray & Co. are acting as joint book-running managers. Robert W. Baird & Co. Incorporated is serving as co-manager for the common stock offering. Copies of the final prospectus supplements and accompanying prospectuses relating to the offerings, when available, may be obtained from UBS Securities LLC at 299 Park Avenue, New York, New York 10171, Attention: Prospectus Department, or by calling (888) 827-7275, or from Piper Jaffray & Co. at 800 Nicollet Mall, J12S03, Minneapolis, Minnesota 55402, Attention: Prospectus Department, by calling (800) 747-3924 or by emailing prospectus@pjc.com.

A registration statement relating to the shares of common stock and convertible notes to be issued in the offerings has been filed with the Securities and Exchange Commission (SEC) and is effective. This press release does not constitute an offer to sell, or the solicitation of an offer to buy, these securities, nor will there be any sale of these securities in any state or other jurisdiction in which such offer, solicitation or sale is not permitted.

About Gevo

Gevo is converting existing ethanol plants into biorefineries to make renewable building block products for the chemical and fuel industries. The Company plans to convert renewable raw materials into isobutanol and renewable hydrocarbons that can be directly integrated on a “drop in” basis into existing chemical and fuel products to deliver environmental and economic benefits. Gevo is committed to a sustainable biobased economy that meets society’s needs for plentiful food and clean air and water.

Forward-Looking Statements

This news release contains certain forward-looking statements that involve risks and uncertainties, including, without limitation, statements regarding the completion, timing and size of the proposed public offerings, Gevo’s anticipated proceeds from the offerings, and its use of those proceeds. Actual results or developments may differ materially from those projected or implied in these forward-looking statements. Factors that may cause such a difference include, without limitation, risks and uncertainties related to market conditions and the satisfaction of customary closing conditions related

to the proposed public offerings. There can be no assurance that Gevo will be able to complete the proposed public offerings on the anticipated terms, or at all. For a further discussion of risks and uncertainties that could cause actual results to differ from those expressed in these forward-looking statements, as well as risks relating to Gevo’s business in general, see the risk disclosures in Gevo’s SEC filings, including its most recent Annual Report on Form 10-K for the year ended December 31, 2011, its Quarterly Reports on Form 10-Q filed from time to time with the SEC, and in the final prospectus supplement related to the public offering to be filed with the SEC. All forward-looking statements included in this news release are based on information available at the time of the release. Gevo is under no obligation to (and expressly disclaims any such obligation to) update or alter its forward-looking statements, whether as a result of new information, future events or otherwise.

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Media:		Investor Contact:

Greta Thomsen		Sarah McCabe
Director of Marcom and PR		Stern IR for Gevo
T: (303) 715-8928		T: (267) 909-9237
gthomsen@gevo.com		sarah@sternir.com