Acacia Communications, Inc. Common Stock, par value $0.0001 per share Underwriting Agreement

EX-1.1 2 d46988dex11.htm EX-1.1 EX-1.1

Exhibit 1.1

Acacia Communications, Inc.

Common Stock, par value $0.0001 per share

Underwriting Agreement

[ ], 2016

Goldman, Sachs & Co.

Merrill Lynch, Pierce, Fenner & Smith

Incorporated

Deutsche Bank Securities Inc.

As representatives of the several Underwriters

named in Schedule I hereto,

c/o Goldman, Sachs & Co.

200 West Street,

New York, New York 10282

Ladies and Gentlemen:

Acacia Communications, Inc., a Delaware corporation (the “Company”), proposes, subject to the terms and conditions stated herein, to issue and sell to the Underwriters named in Schedule I hereto (the “Underwriters”) an aggregate of [ ] shares and, at the election of the Underwriters, up to [ ] additional shares of Common Stock, $0.0001 par value per share (the “Stock”), of the Company, and the stockholders of the Company named in Schedule II hereto (the “Selling Stockholders”) propose, severally and not jointly, subject to the terms and conditions stated herein, to sell to the Underwriters, at the election of the Underwriters, up to [ ] additional shares of Stock. The aggregate of [ ] shares to be sold by the Company is herein called the “Firm Shares” and the aggregate of [ ] additional shares to be sold by the Company and the Selling Stockholders is herein called the “Optional Shares”. The Firm Shares and the Optional Shares that the Underwriters elect to purchase pursuant to Section 2 hereof are herein collectively called the “Shares”.

1. a) The Company represents and warrants to, and agrees with, each of the Underwriters that:

(i) A registration statement on Form S–1 (File No. 333-208680) (the “Initial Registration Statement”) in respect of the Shares has been filed with the Securities and Exchange Commission (the “Commission”); the Initial Registration Statement and any post-effective amendment thereto, each in the form heretofore delivered to you and, excluding exhibits thereto, to you for each of the other Underwriters, have been declared effective by the Commission in such form; other than a registration statement, if any, increasing the size of the offering (a “Rule 462(b) Registration Statement”), filed

pursuant to Rule 462(b) under the Securities Act of 1933, as amended (the “Act”), which became effective upon filing, no other document with respect to the Initial Registration Statement has heretofore been filed with the Commission; and no stop order suspending the effectiveness of the Initial Registration Statement, any post-effective amendment thereto or the Rule 462(b) Registration Statement, if any, has been issued and no proceeding for that purpose has been initiated or, to the Company’s knowledge, threatened by the Commission (any preliminary prospectus included in the Initial Registration Statement or filed with the Commission pursuant to Rule 424(a) of the rules and regulations of the Commission under the Act is hereinafter called a “Preliminary Prospectus”; the various parts of the Initial Registration Statement and the Rule 462(b) Registration Statement, if any, including all exhibits thereto and including the information contained in the form of final prospectus filed with the Commission pursuant to Rule 424(b) under the Act in accordance with Section 5(a) hereof and deemed by virtue of Rule 430A under the Act to be part of the Initial Registration Statement at the time it was declared effective, each as amended at the time such part of the Initial Registration Statement became effective or such part of the Rule 462(b) Registration Statement, if any, became or hereafter becomes effective, are hereinafter collectively called the “Registration Statement”; the Preliminary Prospectus relating to the Shares that was included in the Registration Statement immediately prior to the Applicable Time (as defined in Section 1(a)(iii) hereof) is hereinafter called the “Pricing Prospectus”; the final prospectus, in the form first filed pursuant to Rule 424(b) under the Act, is hereinafter called the “Prospectus”; any “issuer free writing prospectus” as defined in Rule 433 under the Act relating to the Shares is hereinafter called an “Issuer Free Writing Prospectus”; any oral or written communication with potential investors undertaken in reliance on Section 5(d) of the Act is hereinafter called a “Section 5(d) Communication”; and any Section 5(d) Communication that is a written communication within the meaning of Rule 405 under the Act is hereinafter called a “Section 5(d) Writing”);

(ii) No order preventing or suspending the use of any Preliminary Prospectus or any Issuer Free Writing Prospectus has been issued by the Commission, and each Preliminary Prospectus, at the time of filing thereof, conformed in all material respects to the requirements of the Act and the rules and regulations of the Commission thereunder, 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, in the light of the circumstances under which they were made, not misleading; provided, however, that this representation and warranty shall not apply to any statements or omissions made in reliance upon and in conformity with information furnished in writing to the Company by an Underwriter through Goldman, Sachs & Co., Merrill Lynch, Pierce, Fenner & Smith Incorporated, and Deutsche Bank Securities Inc. (each a “Representative” and collectively, the “Representatives”) expressly for use therein (the “Underwriter Information”) or information furnished in writing to the Company by a Selling Stockholder expressly for use therein, which information shall consist of only (A) the legal name and address and the number of shares of Common Stock owned by such Selling Stockholder, and (B) the other information (excluding percentages) with respect to such Selling Stockholder which appears in the table and corresponding footnotes under the caption “Principal and Selling Stockholders” in the Registration Statement, Preliminary Prospectus or Prospectus (“Selling Stockholder Information”).

(iii) For the purposes of this Agreement, the “Applicable Time” is [ : m] (Eastern time) on the date of this Agreement. The Pricing Prospectus, as supplemented by the information listed on Schedule III(c) hereto, taken together (collectively, the “Pricing Disclosure Package”), as of the Applicable Time, did not include any untrue statement of a material fact or omit to state any material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading; and each Issuer Free Writing Prospectus listed on Schedule III(a) hereto does not conflict with the information contained in the Registration Statement, the Pricing Prospectus or the Prospectus and each such Issuer Free Writing Prospectus, and each Section 5(d) Writing listed on Schedule III(b) hereto, each as supplemented by and taken together with the Pricing Disclosure Package, as of the Applicable Time, did not include any untrue statement of a material fact or omit to state any material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading; provided, however, that this representation and warranty shall not apply to statements or omissions made in an Issuer Free Writing Prospectus or Section 5(d) Writing in reliance upon and in conformity with Underwriter Information or Selling Stockholder Information;

(iv) No documents were filed with the Commission since the Commission’s close of business on the business day immediately prior to the date of this Agreement and prior to the execution of this Agreement, except as set forth on Schedule III(b) hereto;

(v) The Registration Statement conforms, and the Prospectus and any further amendments or supplements to the Registration Statement and the Prospectus will conform, in all material respects to the requirements of the Act and the rules and regulations of the Commission thereunder and do not and will not, as of the applicable effective date as to each part of the Registration Statement and as of the applicable filing date as to the Prospectus and any amendment or supplement thereto, 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; provided, however, that this representation and warranty shall not apply to any statements or omissions made in reliance upon and in conformity with Underwriter Information or Selling Stockholder Information;

(vi) Neither the Company nor any of its subsidiaries has sustained since the date of the latest audited financial statements included in the Pricing Prospectus any material loss or interference with its business from fire, explosion, flood or other calamity, whether or not covered by insurance, or from any labor dispute or court or governmental action, order or decree, otherwise than as set forth or contemplated in the Pricing Prospectus; and, since the respective dates as of which information is given in the Registration Statement and the Pricing Prospectus, there has not been any change in the capital stock (other than as a result of the exercise of any outstanding stock options or the settlement of any outstanding restricted stock units or the award of stock options or restricted stock units in the ordinary course of business pursuant to the Company’s stock

plans that are described in the Pricing Prospectus) or long term debt of the Company or any of its subsidiaries or any material adverse change, or any development involving a prospective material adverse change, in or affecting the general affairs, business, properties, management, financial position, stockholders’ equity, or results of operations of the Company and its subsidiaries, taken as a whole, otherwise than as set forth or contemplated in the Pricing Prospectus;

(vii) The Company and its subsidiaries have good and marketable title in fee simple to all real property and good and marketable title to all personal property owned by them, in each case free and clear of all liens, encumbrances and defects except such as are described in the Pricing Prospectus or such as do not materially affect the value of such property and do not materially interfere with the use made and proposed to be made of such property by the Company and its subsidiaries; and any real property and buildings held under lease by the Company and its subsidiaries are held by them under valid, subsisting and enforceable leases (to the knowledge of the Company with respect to any counterparty to such agreement) (subject to the effects of (i) bankruptcy, insolvency or similar laws affecting creditors’ rights generally and (ii) the application of general principles of equity) with such exceptions as are not material and do not materially interfere with the use made and proposed to be made of such property and buildings by the Company and its subsidiaries;

(viii) 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 corporate power and corporate authority to own its properties and conduct its business as described in the Pricing Prospectus, and has been duly qualified as a foreign corporation for the transaction of business and is in good standing under the laws of each other jurisdiction in which it owns or leases properties or conducts any business so as to require such qualification, or is subject to no material liability or disability by reason of the failure to be so qualified or in good standing in any such jurisdiction; and each subsidiary of the Company has been duly incorporated and is validly existing as a corporation in good standing under the laws of its jurisdiction of incorporation, and each such subsidiary has been listed in the Registration Statement;

(ix) The Company has an authorized capitalization as set forth in the Pricing Prospectus and all of the issued shares of capital stock of the Company, including the Shares to be sold by the Selling Stockholders hereunder, have been duly and validly authorized and issued and are fully paid and non-assessable and conform to the description of the Stock contained in the Pricing Disclosure Package and the Prospectus; and all of the issued shares of capital stock of each subsidiary of the Company have been duly authorized and validly issued, are fully paid and non-assessable and are owned directly or indirectly by the Company, free and clear of all liens, encumbrances, equities or claims;

(x) The Shares to be issued and sold by the Company to the Underwriters hereunder have been duly authorized and, when issued and delivered against payment therefor as provided herein, will be validly issued and fully paid and non-assessable and will conform to the description of the Stock contained in the Pricing Disclosure Package and the Prospectus;

(xi) The issuance and sale of the Shares to be purchased by the Underwriters and the compliance by the Company with this Agreement and the consummation of the transactions herein contemplated will not conflict with or result in a breach or violation of any of the terms or provisions of, or constitute a default under, (A) any indenture, mortgage, deed of trust, loan agreement, lease or other agreement or instrument to which the Company or any of its subsidiaries is a party or by which the Company or any of its subsidiaries is bound or to which any of the property or assets of the Company or any of its subsidiaries is subject, (B) the certificate of incorporation or by laws of the Company or any of its subsidiaries, or (C) any statute or any order, rule or regulation of any court or governmental agency or body having jurisdiction over the Company or any of its subsidiaries or any of their properties, except in the case of (A) and (C) for such violations that would not, individually or in the aggregate, be reasonably expected to have a material adverse change, or involve a prospective material adverse change, in or affecting the general affairs, business, properties, management, financial position, stockholders’ equity, results of operations or prospects of the Company and its subsidiaries, taken as a whole, or on the performance of the Company of its obligation under this Agreement (a “Material Adverse Effect”); and no consent, approval, authorization, order, registration or qualification of or with any such court or governmental agency or body is required for the issuance and sale of the Shares or the consummation by the Company of the transactions contemplated by this Agreement, except for the registration under the Act of the sale of the Shares, the registration of the Stock under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), the approval by the Financial Industry Regulatory Authority, Inc. (“FINRA”) of the underwriting terms and arrangements, and such consents, approvals, authorizations, orders, registrations or qualifications as may be required under state securities or Blue Sky laws, the rules and regulations of FINRA or the NASDAQ Stock Market LLC (the “Exchange”) in connection with the purchase and distribution of the Shares by the Underwriters;

(xii) Neither the Company nor any of its subsidiaries is (A) in violation of its certificate of incorporation or by laws or (B) in default in the performance or observance of any material obligation, agreement, covenant or condition contained in any indenture, mortgage, deed of trust, loan agreement, lease or other agreement or instrument to which it is a party or by which it or any of its properties may be bound, except in the case of (B) for such defaults as would not, individually or in the aggregate, be reasonably expected to have a Material Adverse Effect;

(xiii) The statements set forth in the Pricing Prospectus and the Prospectus under the caption “Description of Capital Stock”, insofar as they purport to constitute a summary of the terms of the Stock, and under the captions “Material U.S. Federal Income and Estate Tax Considerations for Non-U.S. Holders of Common Stock” and “Underwriting”, insofar as they purport to describe the provisions of the laws and documents referred to therein, are accurate and complete in all material respects;

(xiv) Other than as set forth in the Pricing Prospectus, there are no legal or governmental proceedings pending to which the Company or any of its subsidiaries is a party or of which any property or assets of the Company or any of its subsidiaries is the subject which, if determined adversely to the Company or any of its subsidiaries, would individually or in the aggregate reasonably be expected to have a Material Adverse Effect; and, to the Company’s knowledge, no such proceedings are threatened or contemplated by governmental authorities or threatened by others;

(xv) The Company is not required and, after giving effect to the offering and sale of the Shares and the application of the proceeds thereof, will not be required to register as an “investment company”, as such term is defined in the Investment Company Act of 1940, as amended, and the rules and regulations of the Commission thereunder (the “Investment Company Act”);

(xvi) At the time of filing the Initial Registration Statement the Company was not, is not, and as of each Time of Delivery will not be an “ineligible issuer,” as defined in Rule 405 under the Act;

(xvii) Deloitte & Touche LLP, which has certified certain financial statements of the Company and its subsidiaries, is an independent registered public accounting firm as required by the Act, the rules and regulations of the Commission thereunder and the Public Accounting Oversight Board;

(xviii) The financial statements of the Company and its subsidiaries included in the Registration Statement, the Pricing Prospectus and the Prospectus, together with the related schedules and notes, present fairly the financial position of the Company and its subsidiaries at the dates indicated and the statement of operations, stockholders’ equity and cash flows of the Company and its subsidiaries for the periods specified; the financial statements of the Company and its subsidiaries included in the Registration Statement comply with the applicable requirements of the Act and have been prepared in conformity with U.S. generally accepted accounting principles (“GAAP”) applied on a consistent basis throughout the periods involved except as disclosed therein; the supporting schedules included in the Registration Statement, if any, present fairly in accordance with GAAP the information required to be stated therein; the selected financial data and the summary financial information included in the Registration Statement, the Pricing Prospectus and the Prospectus present fairly the information shown therein and have been compiled on a basis consistent with that of the audited financial statements included therein, except as disclosed therein. Except as included therein, no historical or pro forma financial statements or supporting schedules are required to be included or incorporated by reference in the Registration Statement, the Pricing Prospectus or the Prospectus under the Act and the rules and regulations of the Commission thereunder; to the extent included in the Registration Statement, the Pricing Prospectus and the Prospectus, the pro forma financial information and the related notes thereto included therein have been prepared in accordance with the applicable requirements of the Act and comply with Regulation G of the Exchange Act, and Item 10 of Regulation S-K of the Act, to the extent applicable, and the assumptions underlying such pro forma financial information are reasonable and are set forth in the Registration

Statement, the Pricing Prospectus and the Prospectus in all material respects; all other financial information included in the Registration Statement, the Pricing Prospectus and the Prospectus has been derived from the accounting records of the Company and its subsidiaries and presents fairly in all material respects the information shown thereby;

(xix) The Company and its directors and officers, in their capacities as such, have taken all necessary actions to ensure that, upon the effectiveness of the Registration Statement, the Company will be in compliance with all applicable provisions of the Sarbanes-Oxley Act of 2002 and the rules and regulations promulgated in connection therewith;

(xx) The Company maintains a system of internal control over financial reporting (as such term is defined in Rule 13a-15(f) under the Exchange Act that complies with the requirements of the Exchange Act and has been designed by the Company’s principal executive officer and principal financial officer, or under their supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with GAAP. The Company’s internal control over financial reporting is effective and the Company is not aware of any material weaknesses in its internal control over financial reporting;

(xxi) Since the date of the latest audited financial statements included in the Pricing Prospectus, there has been no change in the Company’s internal control over financial reporting that has materially and adversely affected, or is reasonably likely to materially and adversely affect, the Company’s internal control over financial reporting;

(xxii) The Company maintains disclosure controls and procedures (as such term is defined in Rule 13a-15(e) under the Exchange Act) that comply with the requirements of the Exchange Act; such disclosure controls and procedures have been designed to ensure that material information relating to the Company and its subsidiaries is made known to the Company’s principal executive officer and principal financial officer by others within those entities; and such disclosure controls and procedures are effective;

(xxiii) This Agreement has been duly authorized, executed and delivered by the Company;

(xxiv) The Company and its subsidiaries own, or have the right to use pursuant to license, sublicense, agreement or permission, the patents, trademarks, service marks, patent applications, trade names, copyrights, trade secrets, domain names, information, know-how, proprietary rights and processes (collectively, “Intellectual Property”) necessary for their business as described in the Pricing Prospectus and the Prospectus and, to the Company’s knowledge, necessary in connection with the products and services under development, without any known conflict with or infringement of the intellectual property rights of others, and have taken all reasonable steps necessary to secure interests in such Intellectual Property and have taken all reasonable steps necessary to secure assignment of such Intellectual Property from its employees and contractors; except as set forth in the Pricing Prospectus and the Prospectus, there has not

been any infringement by any third party of any Intellectual Property or other similar rights of the Company or any of its subsidiaries; except as set forth in the Pricing Prospectus and the Prospectus, to the Company’s knowledge, there are no outstanding options, licenses or agreements of any kind relating to the Intellectual Property of the Company that are required to be set forth in the Pricing Prospectus and the Prospectus; except as set forth in the Pricing Prospectus and the Prospectus, neither the Company nor any of its subsidiaries is a party to or bound by any options, licenses or agreements with respect to the Intellectual Property of any other person or entity that are required to be set forth in the Pricing Prospectus and the Prospectus; none of the technology employed by the Company has been obtained or is being used by the Company or its subsidiaries in violation of any contractual obligation binding on the Company or any of its subsidiaries or, to the Company’s knowledge, any of its directors or executive officers or any of its employees or otherwise in violation of the rights of any persons; except as disclosed in the Pricing Prospectus and the Prospectus, neither the Company nor any of its subsidiaries has received any written communications alleging that the Company or any of its subsidiaries has violated, infringed or conflicted with, or, by conducting its business as set forth in the Pricing Prospectus and the Prospectus, would violate, infringe or conflict with any of the Intellectual Property of any other person or entity other than any such violations, infringements or conflicts which, individually or in the aggregate, have not had, and are not reasonably likely to result in, a Material Adverse Effect; and the Company and its subsidiaries have taken and will maintain reasonable measures to prevent the unauthorized dissemination or publication of their confidential information and, to the extent contractually required to do so, the confidential information of third parties in their possession;

(xxv) The Company and its subsidiaries have (A) paid all federal, state, local and foreign taxes required to be paid through the date hereof, except any such taxes being contested in good faith and for which adequate reserves have been established in accordance with GAAP, and (B) filed all tax returns required to be filed through the date hereof, in each case except for those returns for which a request for extension has been filed; and there is no tax deficiency that has been, or could reasonably be expected to be, asserted against the Company or any of its subsidiaries or any of their respective properties or assets, except where such deficiencies, individually or in the aggregate, would not reasonably be expected to have a Material Adverse Effect;

(xxvi) The Company and its subsidiaries possess all licenses, certificates, permits and other authorizations issued by, and have made all declarations and filings with, the appropriate federal, state, local or foreign governmental or regulatory authorities that are necessary for the ownership or lease of their respective properties or the conduct of their respective businesses as described in the Pricing Prospectus and the Prospectus, except where the failure to so possess or to have made such declaration or filing would not, individually or in the aggregate, be reasonably expected to result in a Material Adverse Effect; and neither the Company nor any of its subsidiaries has received written notice of any revocation or modification of any such license, certificate, permit or authorization or has any reason to believe that any such license, certificate, permit or authorization will not be renewed in the ordinary course, except where such revocation or modification would not, individually or in the aggregate, be reasonably expected to result in a Material Adverse Effect;

(xxvii) No labor disturbance by or dispute with employees of the Company or any of its subsidiaries exists or, to the Company’s knowledge, is contemplated or threatened, and the Company is not aware of any existing or imminent labor disturbance by, or dispute with, the employees of any of the Company’s or any of its subsidiaries’ principal suppliers, manufacturers, contractors or customers, except as would not, individually or in the aggregate, be reasonably expected to have a Material Adverse Effect. Neither the Company nor any of its subsidiaries has received any notice of cancellation or termination with respect to any collective bargaining agreement to which it is a party;

(xxviii) (A) Each employee benefit plan, within the meaning of Section 3(3) of the Employee Retirement Income Security Act of 1974, as amended (“ERISA”), for which the Company or any member of its “Controlled Group” (defined as any organization which is a member of a controlled group of corporations within the meaning of Section 414 of the Internal Revenue Code of 1986, as amended (the “Code”)) would have any liability (each, a “Plan”) has been maintained in compliance with its terms and the requirements of any applicable statutes, orders, rules and regulations, including but not limited to, ERISA and the Code, except for noncompliance that would not, individually or in the aggregate, reasonably be expected to result in material liability to the Company or its subsidiaries; (B) no prohibited transaction, within the meaning of Section 406 of ERISA or Section 4975 of the Code, excluding transactions effected pursuant to a statutory or administrative exemption, has occurred with respect to any Plan that could reasonably be expected to result in a material liability to the Company or its subsidiaries; (C) neither the Company nor any member of its Controlled Group have ever maintained or contributed to or participated in a Plan that is subject to the funding rules of Section 412 of the Code or Section 302 of ERISA) or a “multiemployer plan” within the meaning of Section 4001(a)(3) of ERISA; and (D) there is no pending audit or investigation by the Internal Revenue Service, the U.S. Department of Labor or any other governmental agency or any foreign regulatory agency with respect to any Plan that could reasonably be expected to result in material liability to the Company or its subsidiaries;

(xxix) (A) The Company and its subsidiaries (1) are, and at all prior times were, in compliance with any and all applicable federal, state, local and foreign laws, rules, regulations, requirements, decisions, decrees, orders and other legally enforceable requirements relating to Hazardous Substances (as defined below), the environment, natural resources or the protection of human or worker health or safety (collectively, “Environmental Laws”), (2) have obtained and are in compliance with all permits, licenses, certificates or other authorizations or approvals required of them under applicable Environmental Laws to conduct their respective businesses, (3) have not received notice of any actual or potential liability (including, without limitation, such liability of a third party that could reasonably be expected to adversely affect the Company or any of its subsidiaries) under or relating to, or actual or potential violation of, any Environmental Laws, including for the investigation or remediation of any Release (as defined below) or threat of Release of Hazardous Substances, and have no knowledge of any event or condition that would reasonably be expected to result in any

such notice, (4) are not conducting or paying for, in whole or in part, any investigation, remediation or other corrective action pursuant to any Environmental Law at any location, and (5) are not a party to any order, decree or agreement that imposes any obligation or liability under any Environmental Law; (B) there are no costs or liabilities associated with Environmental Laws of or relating to the Company or its subsidiaries, except in the case of each of (A) and (B) above, for any such failure to comply, or failure to receive required permits, licenses or approvals, or cost, obligation or liability, as would not, individually or in the aggregate, reasonably be expected to have a Material Adverse Effect; and (C) except as described in the Pricing Prospectus and the Prospectus, (1) there are no proceedings that are pending, or that are known to be contemplated, against the Company or any of its subsidiaries under any Environmental Laws in which a governmental entity is also a party, other than such proceedings regarding which the Company reasonably believes no monetary sanctions of $100,000 or more will be imposed, (2) the Company and its subsidiaries are not aware of any issues regarding compliance with Environmental Laws, or liabilities or other obligations under Environmental Laws or concerning Hazardous Substances that would reasonably be expected to have a material effect on the capital expenditures, earnings or competitive position of the Company and its subsidiaries, taken as a whole, and (3) none of the Company and its subsidiaries anticipates material capital expenditures relating to any Environmental Laws;

(xxx) There has been no storage, generation, transportation, use, handling, treatment, Release or threat of Release of Hazardous Substances by, due to or caused by the Company or any of its subsidiaries (or, to the Company’s knowledge, any other entity (including any predecessor) for whose acts or omissions the Company or any of its subsidiaries is or would reasonably be expected to be liable) at, on, under or from any property or facility now or previously owned, operated or leased by the Company or any of its subsidiaries, or at, on, under or from any other property, in violation of any Environmental Laws or in a manner or amount or to a location that would reasonably be expected to result in any liability under any Environmental Law, except for any violation or liability which would not, individually or in the aggregate, reasonably be expected to have a Material Adverse Effect. “Hazardous Substances” means any material, chemical, substance, waste, pollutant, contaminant, compound, mixture, or constituent thereof, in any form or amount, including petroleum (including crude oil or any fraction thereof) and petroleum products, natural gas liquids, asbestos and asbestos containing materials, and polychlorinated biphenyls, that is regulated or which can give rise to liability under any Environmental Law. “Release” means any spilling, leaking, pumping, pouring, emitting, emptying, discharging, injecting, escaping, leaching, dumping, disposing or migrating into or through the indoor or outdoor environment;

(xxxi) Except as would not be reasonably expected to have a Material Adverse Effect, neither the Company nor any of its subsidiaries has violated (A) any federal, state or local law or foreign law relating to discrimination in hiring, promotion or pay of employees, (B) any applicable wage or hour laws or (C) any provision of ERISA or the rules and regulations thereunder;

(xxxii) The Company and its subsidiaries have insurance covering their respective properties, operations, personnel and businesses, including business interruption insurance, which insurance is in amounts and insures against such losses and risks as are reasonable and is ordinary and customary for comparable companies in the same or similar businesses; and neither the Company nor any of its subsidiaries has (A) received notice from any insurer or agent of such insurer that capital improvements or other expenditures are required or necessary to be made in order to continue such insurance or (B) any reason to believe that it will not be able to renew its existing insurance coverage as and when such coverage expires or to obtain similar coverage at reasonable cost from similar insurers as may be necessary to continue its business;

(xxxiii) None of the Company, any of its subsidiaries nor, to the knowledge of the Company, any director, officer, agent, employee, affiliate or other person associated with or acting on behalf of the Company or any of its subsidiaries has (i) used any corporate funds for any unlawful contribution, gift, entertainment or other unlawful expense relating to political activity; (ii) made any direct or indirect unlawful payment to any foreign or domestic government official or employee from corporate funds; (iii) violated or is in violation of any provision of the Foreign Corrupt Practices Act of 1977; (iv) violated or is in violation of any provision of the Bribery Act 2010 of the United Kingdom; or (v) made any bribe, rebate, payoff, influence payment, kickback or other unlawful payment;

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

(xxxv) None of the Company, any of its subsidiaries or, to the knowledge of the Company, any director, officer, agent, employee or affiliate of the Company or any of its subsidiaries is currently the subject or the target of any sanctions administered or enforced by the U.S. Government, including, without limitation, the Office of Foreign Assets Control of the U.S. Department of the Treasury (“OFAC”), or other relevant sanctions authority (collectively, “Sanctions”), and the Company will not directly or indirectly use the proceeds of the offering of the Shares hereunder, or lend, contribute or otherwise make available such proceeds to any subsidiary, joint venture partner or other person or entity (i) to fund any activities of or business with any person, or in any country or territory, that, at the time of such funding, is the subject of Sanctions or (ii) in any other manner that will result in a violation by any person (including any person participating in the transaction, whether as underwriter, advisor, investor or otherwise) of Sanctions;

(xxxvi) Nothing has come to the attention of the Company that has caused the Company to believe that the statistical and market-related data included in the Pricing Prospectus and the Prospectus is not based on or derived from sources that are reliable and accurate in all material respects, and the Company has obtained the written consent to the use of such data from such sources to the extent required by any statute or any order, rule or regulation of any court or governmental agency or body having any jurisdiction over the Company or any of its subsidiaries or any of their properties, or any agreement or instrument to which the Company or any of its subsidiaries is a party or by which the Company or any of its subsidiaries is bound or to which any of the property or assets of the Company or any of its subsidiaries is subject;

(xxxvii) There are no persons with registration rights or other similar rights to have any equity or debt securities registered for sale under the Registration Statement or included in the offering contemplated by this Agreement, except for such rights as may be described in the Pricing Prospectus and the Prospectus. The holders of outstanding shares of the Company’s capital stock are not entitled to preemptive or other rights to subscribe for the Shares that have not been complied with or otherwise effectively waived;

(xxxviii) The Company’s board of directors meets the independence requirements of, and has established an audit committee and a compensation committee, in each case, that meets the independence requirements of, the rules and regulations of the Commission and the Exchange (including applicable phase-in exceptions disclosed in the Pricing Prospectus and the Prospectus);

(xxxix) The Company has operated its business in a manner compliant in all material respects with all privacy, data security and data protection laws and regulations, all contractual obligations and all Company policies applicable to the Company’s collection, handling, usage, disclosure and storage of all personally identifiable data (“personal Data”), along with all other data, including without limitation, IP addresses, mobile device identifiers and website usage activity data (“Device and Activity Data”). In addition, in collecting, handling, using, disclosing and/or storing Device and Activity Data, the Company complies in all material respects with all applicable industry guidelines and codes of conduct. The Company has implemented and maintains policies and procedures designed to ensure the integrity, security and confidentiality of all personal Data and all Device and Activity Data collected, handled used, disclosed and/or stored by the Company in connection with the Company’s operation of its business. The Company has policies and procedures in place designed to ensure privacy, data security and data protection laws are complied with and takes appropriate steps which are reasonably designed to assure compliance in all material respects with such policies and procedures. Such policies and procedures comply in all material respects with all laws and regulations applicable to the Company as well as all contractual obligations applicable to Company. The Company has required and does require all third parties to which it provides any personal Data or Device and Activity Data to maintain the privacy and security of such personal Data or Device and Activity Data, as applicable, including by contractually requiring such third parties to protect such personal Data or Device and Activity Data, as applicable from unauthorized access by and/or disclosure to any unauthorized third parties. The Company has not experienced any security incident that has compromised the privacy and/or security of any personal Data;

(xl) The Company has not and, to its knowledge, no one acting on its behalf has, (A) taken and will not take, directly or indirectly, any action which is designed to or which has constituted or which would reasonably be expected to cause or result in stabilization or manipulation of the price of any security of the Company or any of its subsidiaries to facilitate the sale or resale of the Shares, (B) sold, bid for, purchased, or paid anyone any compensation for soliciting purchases of, the Shares, or (C) paid or agreed to pay to any person any compensation for soliciting another to purchase any other securities of the Company other than as contemplated in this Agreement;

(xli) Since the date as of which information is given in the Pricing Prospectus, and except as may otherwise be disclosed in the Pricing Prospectus, the Company has not (A) issued or granted any securities, other than pursuant to employee benefit plans, stock option plans or other employee compensation plans disclosed in the Pricing Prospectus or pursuant to outstanding options, rights or warrants, (B) incurred any material liability or obligation, direct or contingent, other than liabilities and obligations that were incurred in the ordinary course of business, (C) entered into any material transaction not in the ordinary course of business or (D) declared or paid any dividends on its capital stock;

(xlii) Except as described in the Pricing Prospectus and the Prospectus, there are no contracts, agreements or understandings between the Company and any person that would give rise to a valid claim against the Company or any Underwriter for a brokerage commission, finder’s fee or other like payment in connection with this offering; and

(xliii) From the time of initial confidential submission of the Registration Statement to the Commission (or, if earlier, the first date on which a Section 5(d) Communication was made) through the date hereof, the Company has been and is an “emerging growth company,” as defined in Section 2(a)(19) of the Act (an “Emerging Growth Company”).

(b) Each of the Selling Stockholders, severally and not jointly, represents and warrants to, and agrees with, each of the Underwriters and the Company, with respect to itself only, that:

(i) No consent, approval, authorization, order, registration or qualification of or with any court or governmental body or agency is necessary for the execution and delivery by or on behalf of such Selling Stockholder of this Agreement and the Power of Attorney and the Custody Agreement hereinafter referred to for the sale and delivery of the Shares to be sold by such Selling Stockholder hereunder, except for the registration under the Act of the Shares, the approval by FINRA of the underwriting terms and arrangements, such consents, approvals, authorizations, orders, registrations or qualifications as may be required under state securities or Blue Sky laws in connection with the purchase and distribution of the Shares by the Underwriters, and except for such consents, approvals, authorizations, orders, registrations or qualifications as would not reasonably be expected to impair the consummation of such Selling Stockholder’s

obligations hereunder and under the Power of Attorney and the Custody Agreement; and such Selling Stockholder has full right, power and authority to enter into this Agreement, the Power of Attorney and the Custody Agreement and, if applicable, subject to the exercise of stock options for which such Selling Stockholder has the right to exercise, to sell, assign, transfer and deliver the Shares to be sold by such Selling Stockholder hereunder;

(ii) The sale of the Shares to be sold by such Selling Stockholder hereunder and the compliance by such Selling Stockholder with this Agreement, the Power of Attorney and the Custody Agreement and the consummation of the transactions herein and therein contemplated will not (A) conflict with or result in a breach or violation of any of the terms or provisions of, or constitute a default under, any indenture, mortgage, deed of trust, loan agreement, lease or other agreement or instrument to which such Selling Stockholder is a party or by which such Selling Stockholder is bound or to which any of the property or assets of such Selling Stockholder is subject, (B) result in any violation of the provisions of the Certificate of Incorporation or By laws of such Selling Stockholder if such Selling Stockholder is a corporation, the Partnership Agreement of such Selling Stockholder if such Selling Stockholder is a partnership or similar governing documents if such Selling Stockholder is another type of entity, or (C) result in a violation of any statute or any order, rule or regulation of any court or governmental agency or body having jurisdiction over such Selling Stockholder or any of its subsidiaries or any property or assets of such Selling Stockholder; except, in the case of (A) and (C), for such conflicts, breaches, violations or defaults that would not, individually or in the aggregate, reasonably be expected to adversely affect the ability of such Selling Stockholder to perform its obligations hereunder and under the Power of Attorney and the Custody Agreement;

(iii) Such Selling Stockholder has (except in the case of Shares underlying stock options), and immediately prior to each Time of Delivery (as defined in Section 4 hereof) such Selling Stockholder will have, good and valid title to the Shares to be sold by such Selling Stockholder hereunder at such Time of Delivery, free and clear of all liens, encumbrances, equities or claims, except for any liens, encumbrances, equities or claims under the Custody Agreement; and, upon delivery of such Shares and payment therefor pursuant hereto, good and valid title or a valid “security entitlement” within the meaning of Section 8-501 of the New York Uniform Commercial Code, as applicable, to such Shares, free and clear of all liens, encumbrances, equities or claims, will pass to the several Underwriters;

(iv) On or prior to the date of the Pricing Prospectus, such Selling Stockholder has executed and delivered to the Underwriters an agreement substantially in the form of Annex IV hereto;

(v) Such Selling Stockholder has not taken and will not take, directly or indirectly, any action that is designed to or that has constituted or might reasonably be expected to cause or result in stabilization or manipulation of the price of any security of the Company to facilitate the sale or resale of the Shares;

(vi) To the extent that any statements or omissions made in the Registration Statement, any Preliminary Prospectus, the Prospectus or any amendment or supplement thereto are made in reliance upon and in conformity with Selling Stockholder Information, such Registration Statement and Preliminary Prospectus did, and the Prospectus and any further amendments or supplements to the Registration Statement and the Prospectus will, when they become effective or are filed with the Commission, as the case may be, not contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein not misleading (in the case of the Preliminary Prospectus, the Pricing Prospectus, the Prospectus, or any amendment or supplement thereto in light of the circumstances under which they were made);

(vii) In order to document the Underwriters’ compliance with the reporting and withholding provisions of the Tax Equity and Fiscal Responsibility Act of 1982 with respect to the transactions herein contemplated, such Selling Stockholder will deliver to you prior to or at the First Time of Delivery a properly completed and executed United States Treasury Department Form W 9 (or other applicable form or statement specified by Treasury Department regulations in lieu thereof);

(viii) The Shares to be sold by such Selling Stockholder hereunder, and to the extent applicable, the stock option agreements relating to options exercisable for the Shares (including, for the avoidance of doubt, the Shares issued upon exercise) have been placed in custody under a Custody Agreement, in the form heretofore furnished to you (the “Custody Agreement”), duly executed and delivered by such Selling Stockholder to Computershare Inc., as custodian (the “Custodian”), and such Selling Stockholder has duly executed and delivered a Power of Attorney, in the form heretofore furnished to you (the “Power of Attorney”), appointing the persons indicated in Schedule II hereto, and each of them, as such Selling Stockholder’s attorneys in fact (the “Attorneys in Fact”) with authority to execute and deliver this Agreement on behalf of such Selling Stockholder, to determine the purchase price to be paid by the Underwriters to the Selling Stockholders as provided in Section 2 hereof, to authorize the delivery of the Shares to be sold by such Selling Stockholder hereunder and otherwise to act on behalf of such Selling Stockholder in connection with the transactions contemplated by this Agreement and the Custody Agreement;

(ix) The Shares, and to the extent applicable, the stock option agreements relating to options exercisable for the Shares (including, for the avoidance of doubt, the Shares issued upon exercise) held in custody for such Selling Stockholder under the Custody Agreement are subject to the interests of the Underwriters hereunder; the arrangements made by such Selling Stockholder for such custody, and the appointment by such Selling Stockholder of the Attorneys in Fact by the Power of Attorney, are to that extent irrevocable, except in the case of the Custody Agreement, as set forth therein; the obligations of the Selling Stockholders hereunder shall not be terminated by operation of law, whether by the death or incapacity of any individual Selling Stockholder or, in the case of an estate or trust, by the death or incapacity of any executor or trustee or the termination of such estate or trust, or in the case of a partnership, limited liability company or corporation, by the dissolution of such partnership, limited liability company

or corporation, or by the occurrence of any other event; if any individual Selling Stockholder or any such executor or trustee should die or become incapacitated, or if any such estate or trust should be terminated, or if any such partnership, limited liability company or corporation should be dissolved, or if any other such event should occur, before the delivery of the Shares to be sold by such Selling Stockholder hereunder, the Shares, and to the extent applicable, the stock option agreements relating to options exercisable for the Shares (including, for the avoidance of doubt, the Shares issued upon exercise), to be sold by such Selling Stockholder hereunder shall be delivered by or on behalf of the Selling Stockholders in accordance with the terms and conditions of this Agreement and of the Custody Agreements; and actions taken by the Attorneys in Fact pursuant to the Powers of Attorney shall be as valid as if such death, incapacity, termination, dissolution or other event had not occurred, regardless of whether or not the Custodian, the Attorneys in Fact, or any of them, shall have received notice of such death, incapacity, termination, dissolution or other event; and

(x) Such Selling Stockholder is not prompted by any material non public information concerning the Company or any of its subsidiaries that is not disclosed in the Pricing Prospectus to sell its Shares pursuant to this Agreement.

2. Subject to the terms and conditions herein set forth, (a) the Company and each of the Selling Stockholders, as and to the extent indicated in Schedule II hereto, agrees, severally and not jointly, to sell to each of the Underwriters, and each of the Underwriters agrees, severally and not jointly, to purchase from the Company, at a purchase price per share of $[ ], the number of Firm Shares (to be adjusted by you so as to eliminate fractional shares) determined by multiplying the aggregate number of Firm Shares to be sold by the Company by a fraction, the numerator of which is the aggregate number of Firm Shares to be purchased by such Underwriter as set forth opposite the name of such Underwriter in Schedule I hereto and the denominator of which is the aggregate number of Firm Shares to be purchased by all of the Underwriters from the Company hereunder and (b) in the event and to the extent that the Underwriters shall exercise the election to purchase Optional Shares as provided below, the Company and the Selling Stockholders, as and to the extent indicated in Schedule II hereto agree, severally and not jointly, to sell to each of the Underwriters, and each of the Underwriters agrees, severally and not jointly, to purchase from the Company and each of the Selling Stockholders, at the purchase price per share set forth in clause (a) of this Section 2, that portion of the number of Optional Shares as to which such election shall have been exercised (to be adjusted by you so as to eliminate fractional shares) determined by multiplying such number of Optional Shares by a fraction, the numerator of which is the maximum number of Optional Shares which such Underwriter is entitled to purchase as set forth opposite the name of such Underwriter in Schedule I hereto and the denominator of which is the maximum number of Optional Shares that all of the Underwriters are entitled to purchase hereunder.

The Company and the Selling Stockholders, as and to the extent indicated in Schedule II hereto, hereby grant, severally and not jointly, to the Underwriters the right to purchase at their election up to [ ] Optional Shares, at the purchase price per share set forth in the paragraph above, for the sole purpose of covering sales of shares in excess of the number of Firm Shares, provided that the purchase price per Optional Share shall be reduced by an amount per share equal to any dividends or distributions declared by the Company and payable on the Firm Shares

but not payable on the Optional Shares. Any such election to purchase Optional Shares shall be made [in proportion to the maximum number of Optional Shares to be sold by the Company and all Selling Stockholders as set forth in Schedule II hereto] [initially with respect to the Optional Shares to be sold by the Company and then among the Selling Stockholders in proportion to the maximum number of Optional Shares to be sold by each Selling Stockholder as set forth in Schedule II hereto].] Any such election to purchase Optional Shares may be exercised only by written notice from you to the Company and the Selling Stockholders or Attorneys in Fact, as applicable, given within a period of 30 calendar days after the date of this Agreement and setting forth the aggregate number of Optional Shares to be purchased and the date on which such Optional Shares are to be delivered, as determined by you but in no event earlier than the First Time of Delivery (as defined in Section 4 hereof) or, unless you and the Company and the Selling Stockholders or Attorneys in Fact, as applicable, otherwise agree in writing, earlier than two or later than ten business days after the date of such notice.

3. Upon the authorization by you of the release of the Firm Shares, the several Underwriters propose to offer the Firm Shares for sale upon the terms and conditions set forth in the Prospectus.

4. (a) The Shares to be purchased by each Underwriter hereunder, in definitive form, and in such authorized denominations and registered in such names as the Representatives may request upon at least forty-eight hours’ prior notice to the Company and the Selling Stockholders shall be delivered by or on behalf of the Company and the Selling Stockholders to the Representatives, through the facilities of the Depository Trust Company (“DTC”), for the account of such Underwriter, against payment by or on behalf of such Underwriter of the purchase price therefor by wire transfer of Federal (same-day) funds to the accounts specified by the Company and the Custodian to the Representatives at least forty-eight hours in advance. The Company and the Selling Stockholders will cause the certificates, if any, representing the Shares to be made available for checking and packaging at least twenty-four hours prior to the Time of Delivery (as defined below) with respect thereto at the office of DTC or its designated custodian (the “Designated Office”). The time and date of such delivery and payment shall be, with respect to the Firm Shares, 9:30 a.m., New York City time, on [ ], 2016 or such other time and date as the Representatives and the Company may agree upon in writing, and, with respect to the Optional Shares, 9:30 a.m., New York time, on the date specified by the Representatives in each written notice given by the Representatives of the Underwriters’ election to purchase such Optional Shares, or such other time and date as the Representatives, the Company and the Attorneys in Fact may agree upon in writing. Such time and date for delivery of the Firm Shares is herein called the “First Time of Delivery”, each such time and date for delivery of the Optional Shares, if not the First Time of Delivery, is herein called the “Second Time of Delivery”, and each such time and date for delivery is herein called a “Time of Delivery”.

(b) The documents to be delivered at each Time of Delivery by or on behalf of the parties hereto pursuant to Section 8 hereof, including the cross receipt for the Shares and any additional documents requested by the Underwriters pursuant to Section 8(l) hereof will be delivered at the offices of Goodwin Procter LLP, Exchange Place, Boston, Massachusetts 02109 (the “Closing Location”), and the Shares will be delivered at the Designated Office, all at such Time of Delivery. A meeting will be held at the Closing Location at [ ] .m., New York

City time, on the New York Business Day next preceding such Time of Delivery, at which meeting the final drafts of the documents to be delivered pursuant to the preceding sentence will be available for review by the parties hereto. For the purposes of this Agreement, “New York Business Day” shall mean each Monday, Tuesday, Wednesday, Thursday and Friday which is not a day on which banking institutions in New York are generally authorized or obligated by law or executive order to close.

5. The Company agrees with each of the Underwriters:

(a) To prepare the Prospectus in a form approved by you and to file such Prospectus pursuant to Rule 424(b) under the Act not later than the Commission’s close of business on the second business day following the execution and delivery of this Agreement, or, if applicable, such earlier time as may be required by Rule 430A(a)(3) under the Act; to make no further amendment or any supplement to the Registration Statement or the Prospectus prior to the last Time of Delivery of which you disapprove promptly after reasonable notice thereof; to advise you, promptly after it receives notice thereof, of the time when any amendment to the Registration Statement has been filed or becomes effective or any amendment or supplement to the Prospectus has been filed and to furnish you with copies thereof; to file promptly all materials required to be filed by the Company with the Commission pursuant to Rule 433(d) under the Act; to advise you, promptly after it receives notice thereof, of the issuance by the Commission of any stop order or of any order preventing or suspending the use of any Preliminary Prospectus or other prospectus in respect of the Shares, of the suspension of the qualification of the Shares for offering or sale in any jurisdiction, of the initiation or threatening of any proceeding for any such purpose, or of any request by the Commission for the amending or supplementing of the Registration Statement or the Prospectus or for additional information; and, in the event of the issuance of any stop order or of any order preventing or suspending the use of any Preliminary Prospectus or other prospectus relating to the Shares or suspending any such qualification, to promptly use its best efforts to obtain the withdrawal of such order;

(b) To promptly from time to time to take such action as you may reasonably request to qualify the Shares for offering and sale under the securities laws of such jurisdictions as you may request and to comply with such laws so as to permit the continuance of sales and dealings therein in such jurisdictions for as long as may be necessary to complete the distribution of the Shares, provided that in connection therewith the Company shall not be required to qualify as a foreign corporation or to file a general consent to service of process in any jurisdiction or subject itself to taxation in any jurisdiction in which it is not otherwise subject to taxation on the date hereof;

(c) Prior to 10:00 a.m., New York City time, on the New York Business Day next succeeding the date of this Agreement and from time to time, to furnish the Underwriters with written and electronic copies of the Prospectus in New York City in such quantities as you may reasonably request, and, if the delivery of a prospectus (or in lieu thereof, the notice referred to in Rule 173(a) under the Act) is required at any time prior to the expiration of nine months after the time of issue of the Prospectus in connection with the offering or sale of the Shares and if at such time any event shall have occurred as a result of which the Prospectus as then amended or supplemented would include an untrue statement of a material fact or omit to state any material fact necessary in order to make the statements therein, in the light of the circumstances under

which they were made when such Prospectus (or in lieu thereof, the notice referred to in Rule 173(a) under the Act) is delivered, not misleading, or, if for any other reason it shall be necessary during such same period to amend or supplement the Prospectus in order to comply with the Act, to notify you and upon your request to prepare and furnish without charge to each Underwriter and to any dealer in securities (whose name and address the Underwriters shall furnish to the Company) as many written and electronic copies as you may from time to time reasonably request of an amended Prospectus or a supplement to the Prospectus which will correct such statement or omission or effect such compliance; and in case any Underwriter is required to deliver a prospectus (or in lieu thereof, the notice referred to in Rule 173(a) under the Act) in connection with sales of any of the Shares at any time nine months or more after the time of issue of the Prospectus, upon your request but at the expense of such Underwriter, to prepare and deliver to such Underwriter as many written and electronic copies as you may request of an amended or supplemented Prospectus complying with Section 10(a)(3) of the Act;

(d) To make generally available to its securityholders as soon as practicable, but in any event not later than sixteen months after the effective date of the Registration Statement (as defined in Rule 158(c) under the Act), an earnings statement of the Company and its subsidiaries (which need not be audited) complying with Section 11(a) of the Act and the rules and regulations of the Commission thereunder (including, at the option of the Company, Rule 158), which may be satisfied by filing with the Commission’s Electronic Data Gathering, Analysis and Retrieval System (“EDGAR”);

(e) i) During the period beginning from the date hereof and continuing to and including the date that is one hundred eighty (180) days after the date of the Prospectus (the “Company Lock-Up Period”), not to (A) offer, sell, contract to sell, pledge, grant any option to purchase, make any short sale or otherwise transfer or dispose of, directly or indirectly, or file with the Commission a registration statement under the Act relating to, any securities of the Company that are substantially similar to the Shares, including but not limited to any options or warrants to purchase shares of Stock or any securities that are convertible into or exchangeable for, or that represent the right to receive, Stock or any such substantially similar securities, or publicly disclose the intention to make any offer, sale, pledge, disposition or filing or (B) enter into any swap or other agreement that transfers, in whole or in part, any of the economic consequences of ownership of the Stock or any such other securities, whether any such transaction described in clause (A) or (B) above is to be settled by delivery of Stock or such other securities, in cash or otherwise (other than the Shares to be sold hereunder or pursuant to employee stock option plans existing on, or upon the conversion or exchange of convertible or exchangeable securities outstanding as of, the date of this Agreement), without the prior written consent of the Representatives; provided, however, that the foregoing restrictions shall not apply to (a) Shares to be sold hereunder, (b) the issuance by the Company of shares of Stock upon the exercise of an option, the settlement of a restricted stock unit or the conversion or exchange of a security outstanding on the date hereof and disclosed in the Pricing Prospectus, (c) the issuance by the Company of Stock or any securities convertible into, exchangeable for or that represent the right to receive shares of Stock, in each case pursuant to the Company’s stock plans disclosed in the Pricing Prospectus, (d) the entry into an agreement providing for the issuance by the Company of shares of Stock or any security convertible into or exercisable for shares of Stock in connection with the acquisition by the Company or any of its subsidiaries of the securities, business, property or other assets of another person or pursuant to an employee benefit plan

assumed by the Company in connection with such acquisition, and the issuance of any such securities pursuant to any such agreement, (e) the entry into any agreement providing for the issuance of shares of Stock or any security convertible into or exercisable for shares of Stock in connection with a joint venture, commercial relationship or other strategic transaction, and the issuance of any such securities pursuant to any such agreement; provided that in the case of clauses (b) through (e) the Company shall cause each recipient of such securities to execute and deliver to you, on or prior to the issuance of such securities, a Lock-Up Agreement for the remainder of the Company Lock-Up Period and enter stop transfer instructions with the Company’s transfer agent and registrar on such securities, which the Company agrees it will not waive or amend without the prior written consent of Representatives on behalf of the Underwriters; and further, provided, that the aggregate number of shares of Stock that the Company may sell or issue or agree to sell or issue pursuant to clauses (d) and (e) shall not exceed five percent (5%) of the total number of shares of the Stock issued and outstanding immediately following the completion of transactions contemplated by this Agreement.

(ii) If the Representatives, each acting in its sole discretion, agree to release or waive the restrictions in any Lock-Up Agreement for an officer or director of the Company and provide the Company with notice of the impending release or waiver at least three business days before the effective date of the release or waiver, the Company agrees to announce the impending release or waiver by a press release substantially in the form of Annex III hereto through a major news service at least two business days before the effective date of the release or waiver;

(f) During a period of three years from the effective date of the Registration Statement, so long as the Company is subject to the reporting requirements of either Section 13 or Section 15(d) of the Exchange Act, to furnish to its stockholders as soon as practicable after the end of each fiscal year an annual report (including a balance sheet and statements of income, stockholders’ equity and cash flows of the Company and its consolidated subsidiaries certified by independent public accountants) and, as soon as practicable after the end of each of the first three quarters of each fiscal year (beginning with the fiscal quarter ending after the effective date of the Registration Statement), to make available to its stockholders consolidated summary financial information of the Company and its subsidiaries for such quarter in reasonable detail, provided that no reports, documents or other information need to be furnished pursuant to this Section 5(f) to the extent they are available on EDGAR;

(g) During a period of five years from the effective date of the Registration Statement, so long as the Company is subject to the reporting requirements of either Section 13 or Section 15(d) of the Exchange Act, to furnish to you copies of all reports or other communications (financial or other) furnished to stockholders, and to deliver to you (i) as soon as they are available, copies of any reports and financial statements furnished to or filed with the Commission or any national securities exchange on which any class of securities of the Company is listed; and (ii) such additional information concerning the business and financial condition of the Company as you may from time to time reasonably request (such financial statements to be on a consolidated basis to the extent the accounts of the Company and its subsidiaries are consolidated in reports furnished to its stockholders generally or to the Commission); provided that no reports, statements, communications, or other information need to be furnished pursuant to this Section 5(g) to the extent they are available on EDGAR or the investor section of the Company’s website, and provided further that no additional information shall be required if the disclosure of such additional information would result in a violation of Regulation FD;

(h) To use the net proceeds received by it from the sale of the Shares pursuant to this Agreement in the manner specified in the Pricing Prospectus under the caption “Use of Proceeds”;

(i) To use its best efforts to list, subject to notice of issuance, the Shares on the Exchange;

(j) To file with the Commission such information on Form 10-Q or Form 10-K as may be required by Rule 463 under the Act;

(k) If the Company elects to rely upon Rule 462(b), to file a Rule 462(b) Registration Statement with the Commission in compliance with Rule 462(b) by 10:00 p.m., Washington, D.C. time, on the date of this Agreement, and at the time of filing either pay to the Commission the filing fee for the Rule 462(b) Registration Statement or give irrevocable instructions for the payment of such fee pursuant to Rule 3a(c) of the Commission’s Informal and Other Procedures (16 CFR 202.3a);

(l) Upon the reasonable request of any Underwriter, to furnish, or cause to be furnished, to such Underwriter an electronic version of the Company’s trademarks, servicemarks and corporate logo for use on the website, if any, operated by such Underwriter for the purpose of facilitating the on-line offering of the Shares (the “License”); provided, however, that the License shall be used solely for the purpose described above, is granted without any fee and may not be assigned or transferred; and

(m) To promptly notify the Representatives if the Company ceases to be an Emerging Growth Company at any time prior to the later of (i) completion of the distribution of the Shares within the meaning of the Act and (ii) completion of the Company Lock-Up Period.

(a) The Company represents and agrees that, without the prior consent of the Representatives, it has not made and will not make any offer relating to the Shares that would constitute a “free writing prospectus” as defined in Rule 405 under the Act; each Selling Stockholder, severally and not jointly, represents and agrees that, without the prior consent of the Company and the Representatives, it has not made and will not make any offer relating to the Shares that would constitute a free writing prospectus; and each Underwriter represents and agrees that, without the prior consent of the Company and the Representatives, it has not made and will not make any offer relating to the Shares that would constitute a free writing prospectus; any such free writing prospectus the use of which has been consented to by the Company and the Representatives is listed on Schedule III(a) hereto;

(b) The Company represents and agrees that (i) it has not engaged in, or authorized any other person to engage in, any Section 5(d) Communications, other than Section 5(d) Communications with the prior consent of the Representatives with entities that are qualified institutional buyers as defined in Rule 144A under the Act or institutions that are accredited

investors as defined in Rule 501(a) under the Act; and (ii) it has not distributed, or authorized any other person to distribute, any Section 5(d) Writings, other than those distributed with the prior consent of the Representatives that are listed on Schedule III(b) hereto; and the Company reconfirms that the Underwriters have been authorized to act on its behalf in engaging in Section 5(d) Communications;

(c) The Company has complied and will comply with the requirements of Rule 433 under the Act applicable to any Issuer Free Writing Prospectus, including timely filing with the Commission or retention where required and legending; and the Company represents that it has satisfied and agrees that it will satisfy the conditions under Rule 433 under the Act to avoid a requirement to file with the Commission any electronic road show;

(d) Each Underwriter represents and agrees that (i) any Section 5(d) Communications undertaken by it were with entities that are qualified institutional buyers as defined in Rule 144A under the Act or institutions that are accredited investors as defined in Rule 501(a) under the Act and (ii) it will not distribute, or authorize any other person to distribute, any Section 5(d) Writing, other than those distributed with the prior consent of the Company; and

(e) The Company agrees that if at any time following issuance of an Issuer Free Writing Prospectus or Section 5(d) Writing, any event occurred or occurs as a result of which such Issuer Free Writing Prospectus or Section 5(d) Writing would conflict with the information in the Registration Statement, the Pricing Prospectus or the Prospectus or would include an untrue statement of a material fact or omit to state any material fact necessary in order to make the statements therein, in the light of the circumstances then prevailing, not misleading, the Company will give prompt notice thereof to the Representatives and, if requested by the Representatives, will prepare and furnish without charge to each Underwriter an Issuer Free Writing Prospectus, Section 5(d) Writing or other document which will correct such conflict, statement or omission; provided, however, that this covenant shall not apply to any statements or omissions in an Issuer Free Writing Prospectus or Section 5(d) Writing made in reliance upon and in conformity with Underwriter Information or Selling Stockholder Information.

7. The Company and each of the Selling Stockholders, severally and not jointly, covenant and agree with one another and the several Underwriters that the Company will pay or cause to be paid the following: (i) the fees, disbursements and expenses of the Company’s counsel and accountants, Mintz Levin Cohn Ferris Glovsky and Popeo PC, as a special counsel for certain Selling Stockholders (“Mintz Levin Fees”) in connection with the registration of the Shares under the Act and all other expenses in connection with the preparation, printing, reproduction and filing of the Registration Statement, any Preliminary Prospectus, any Issuer Free Writing Prospectus and the Prospectus and amendments and supplements thereto and the mailing and delivering of copies thereof to the Underwriters and dealers; (ii) the cost of printing or producing any Agreement among Underwriters, this Agreement, the Blue Sky Memorandum, closing documents (including any compilations thereof) and any other documents in connection with the offering, purchase, sale and delivery of the Shares; (iii) all expenses in connection with the qualification of the Shares for offering and sale under state securities laws as provided in Section 5(b) hereof, including the fees and disbursements of counsel for the Underwriters (not to exceed $5,000) in connection with such qualification and in connection with the Blue Sky survey; (iv) all fees and expenses in connection with listing the Shares on the Exchange; (v) the

filing fees incident to, and the fees and disbursements of counsel for the Underwriters (not to exceed $20,000) in connection with, any required review by FINRA of the terms of the sale of the Shares; (vi) the cost of preparing stock certificates representing the Shares, if applicable, (vii) the cost and charges of any transfer agent or registrar, and (viii) all other costs and expenses incident to the performance of its obligations hereunder which are not otherwise specifically provided for in this Section; provided that, in connection with the “road show” undertaken in connection with the marketing of the Shares, (A) the Company and the Underwriters will each bear 50% of the costs associated with any chartered aircraft used, and (B) the Company and the Underwriters will each pay their own costs associated with hotel accommodations. Each Selling Stockholder will pay or cause to be paid all costs and expenses incident to the performance of such Selling Stockholder’s obligations hereunder which are not otherwise specifically provided for in this Section, including (i) any fees and expenses of separate counsel for such Selling Stockholder, except as contemplated above, and (ii) all taxes incident to the sale and delivery of the Shares to be sold by such Selling Stockholder to the Underwriters hereunder. In connection with clause (ii) of the preceding sentence, Goldman, Sachs & Co. agrees to pay New York State stock transfer tax, and the Selling Stockholder agrees to reimburse Goldman, Sachs & Co. for carrying costs associated with such payment if such tax payment is not rebated on the day of payment and for any portion of such tax payment not rebated. It is understood, however, that except as provided in this Section 7, and Sections 9 and 12 hereof, the Underwriters will pay all of their own costs and expenses, including the fees of their counsel, stock transfer taxes on resale of any of the Shares by them, and any advertising expenses connected with any offers they may make.

8. The obligations of the Underwriters hereunder, as to the Shares to be delivered at each Time of Delivery, shall be subject, in their discretion, to the condition that all representations and warranties and other statements of the Company and the Selling Stockholders herein are, at and as of such Time of Delivery, true and correct, the condition that the Company and the Selling Stockholders shall have performed all of its and their obligations hereunder theretofore to be performed, and the following additional conditions:

(a) The Prospectus shall have been filed with the Commission pursuant to Rule 424(b) under the Act within the applicable time period prescribed for such filing by the rules and regulations under the Act and in accordance with Section 5(a) hereof; all material required to be filed by the Company pursuant to Rule 433(d) under the Act shall have been filed with the Commission within the applicable time period prescribed for such filing by Rule 433; if the Company has elected to rely upon Rule 462(b) under the Act, the Rule 462(b) Registration Statement shall have become effective by 10:00 p.m., Washington, D.C. time, on the date of this Agreement; no stop order suspending the effectiveness of the Registration Statement or any part thereof shall have been issued and no proceeding for that purpose shall have been initiated or threatened by the Commission no stop order suspending or preventing the use of the Prospectus or any Issuer Free Writing Prospectus shall have been initiated or threatened by the Commission; and all requests for additional information on the part of the Commission shall have been complied with to your reasonable satisfaction;

(b) Goodwin Procter LLP, counsel for the Underwriters, shall have furnished to you such written opinion or opinions dated such Time of Delivery in substantially the form attached as Annex II(a) hereto, and such counsel shall have received such papers and information as they may reasonably request to enable them to pass upon such matters;

(c) Wilmer Cutler Pickering Hale and Dorr LLP, counsel for the Company, shall have furnished to you their written opinion dated such Time of Delivery in substantially the form attached as Annex II(b) hereto;

(d) The respective counsel for each of the Selling Stockholders, as indicated in Schedule II hereto, each shall have furnished to you their written opinion with respect to each of the Selling Stockholders for whom they are acting as counsel dated such Time of Delivery in substantially the form attached as Annex II(c) hereto;

(e) On the date of the Prospectus at a time prior to the execution of this Agreement, at 9:30 a.m., New York City time, on the effective date of any post-effective amendment to the Registration Statement filed subsequent to the date of this Agreement and also at each Time of Delivery, Deloitte & Touche LLP shall have furnished to you a letter or letters, dated the respective dates of delivery thereof, in form and substance satisfactory to you, to the effect set forth in Annex I hereto (the executed copy of the letter delivered prior to the execution of this Agreement is attached as Annex I(a) hereto and a form of the letter to be delivered on the effective date of any post-effective amendment to the Registration Statement and as of each Time of Delivery is attached as Annex I(b) hereto);

(f) (i) Neither the Company nor any of its subsidiaries shall have sustained since the date of the latest audited financial statements included in the Pricing Prospectus any loss or interference with its business from fire, explosion, flood or other calamity, whether or not covered by insurance, or from any labor dispute or court or governmental action, order or decree, otherwise than as set forth or contemplated in the Pricing Prospectus, and (ii) since the respective dates as of which information is given in the Pricing Prospectus there shall not have been any change in the capital stock (other than as a result of the exercise of stock options or the settlement of restricted stock units or the award of stock options or restricted stock units in the ordinary course of business pursuant to the Company’s stock plans that are described in the Pricing Prospectus) or long term debt of the Company or any of its subsidiaries or any change, or any development involving a prospective change, in or affecting the general affairs, business, management, financial position, stockholders’ equity or results of operations of the Company and its subsidiaries, otherwise than as set forth or contemplated in the Pricing Prospectus, the effect of which, in any such case described in clause (i) or (ii), is in your judgment so material and adverse as to make it impracticable or inadvisable to proceed with the public offering or the delivery of the Shares being delivered at such Time of Delivery on the terms and in the manner contemplated in the Pricing Prospectus;

(g) There are no debt securities or preferred stock of, or guaranteed by, the Company that are rated by a “nationally recognized statistical rating organization,” as such term is defined in Section 3(a)(62) of the Exchange Act;

(h) On or after the Applicable Time there shall not have occurred any of the following: (i) a suspension or material limitation in trading in securities generally on the Exchange; (ii) a suspension or material limitation in trading in the Company’s securities on the Exchange; (iii) a general moratorium on commercial banking activities declared by Federal, New York or Massachusetts State authorities or a material disruption in commercial banking or securities settlement or clearance services in the United States; (iv) the outbreak or escalation of hostilities involving the United States or the declaration by the United States of a national emergency or war; or (v) the occurrence of 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 your judgment makes it impracticable or inadvisable to proceed with the public offering or the delivery of the Shares being delivered at such Time of Delivery on the terms and in the manner contemplated in the Prospectus;

(i) The Shares to be sold at such Time of Delivery shall have been duly listed, subject to notice of issuance, on the Exchange;

(j) FINRA shall have confirmed that it has not raised any objection with respect to the fairness and reasonableness of the underwriting terms and arrangements relating to the offering of the Shares;

(k) The Company shall have obtained and delivered to the Underwriters executed copies of an agreement from each stockholder of the Company listed on Schedule IV hereto, substantially to the effect set forth in Annex IV hereto in form and substance satisfactory to you (each, a “Lock-Up Agreement”);

(l) The Company shall have complied with the provisions of Section 5(c) hereof with respect to the furnishing of prospectuses on the New York Business Day next succeeding the date of this Agreement;

(m) At each Time of Delivery, the Chief Executive Officer and the Chief Financial Officer of the Company, in their capacities as such, shall have furnished to the Representatives a certificate, dated the respective dates of delivery thereof, to the effect that each such officer has carefully examined the Registration Statement, the Pricing Prospectus, the Prospectus and any amendment or supplement thereto, as well as each electronic road show used in connection with the offering of the Shares, and this Agreement and that:

(i) the representations and warranties of the Company in this Agreement are true and correct on and at such Time of Delivery with the same effect as if made on such Time of Delivery and the Company has complied with all the agreements and satisfied all the conditions on its part to be performed or satisfied at or prior to such Time of Delivery;

(ii) no stop order suspending the effectiveness of the Registration Statement or any notice objecting to its use has been issued and no proceedings for that purpose have been instituted or, to the Company’s knowledge, threatened; and

(iii) since the date of the most recent financial statements included in the Pricing Prospectus and the Prospectus (exclusive of any supplement thereto), there has been no Material Adverse Effect, except as set forth in or contemplated in the Pricing Prospectus and the Prospectus (exclusive of any supplement thereto).

(n) At each Time of Delivery, the Chief Financial Officer of the Company, in his capacity as such, shall have furnished to the Representatives a certificate in a form agreed by the Representatives and the Company and dated the respective date of delivery thereof, certifying that certain factual statements in the Registration Statement, the Pricing Prospectus, the Prospectus and any amendment or supplement thereto, are true and correct on and at such Time of Delivery with the same effect as if made on such Time of Delivery;

(o) At each Time of Delivery, the Representatives shall have received a certificate of an Attorney-in-Fact on behalf of each Selling Stockholder to the effect that (i) the representations and warranties of each Selling Stockholder in this Agreement are true and correct on and at such Time of Delivery with the same effect as if made on such Time of Delivery, and (ii) each Selling Stockholder has complied with all the agreements and satisfied all the conditions on its part to be performed or satisfied at or prior to such Time of Delivery;

(p) At each Time of Delivery, the Representatives shall have received a certificate of the Secretary of the Company, as to such matters as the Representatives may reasonably request; and

(q) At each Time of Delivery, the Company and the Selling Stockholders shall have furnished to the Representatives such additional information, certificates, opinions or documents as the Representatives may reasonably request.

(a) The Company will indemnify and hold harmless each Underwriter against any losses, claims, damages or liabilities, joint or several, to which such Underwriter may become subject, under the Act or otherwise, insofar as such losses, claims, damages or liabilities (or actions in respect thereof) (i) arise out of or are based upon an untrue statement or alleged untrue statement of a material fact contained in the Registration Statement, any Preliminary Prospectus, the Pricing Prospectus or the Prospectus, or any amendment or supplement thereto, any Issuer Free Writing Prospectus any “issuer information” filed or required to be filed pursuant to Rule 433(d) under the Act, or any Section 5(d) Writing, or (ii) arise out of or are based upon the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein not misleading, and will reimburse each Underwriter for any legal or other expenses reasonably incurred by such Underwriter in connection with investigating or defending any such action or claim as such expenses are incurred; provided, however, that the Company shall not be liable in any such case to the extent that any such loss, claim, damage or liability arises out of or is based upon an untrue statement or alleged untrue statement or omission or alleged omission made in the Registration Statement, any Preliminary Prospectus, the Pricing Prospectus, the Prospectus, or any amendment or supplement thereto, any Issuer Free Writing Prospectus, or any Section 5(d) Writing, in reliance upon and in conformity with Underwriter Information.

(b) Each Selling Stockholder, severally and not jointly, will indemnify and hold harmless each Underwriter against any losses, claims, damages or liabilities, joint or several, to which such Underwriter may become subject, under the Act or otherwise, insofar as such losses, claims, damages or liabilities (or actions in respect thereof) arise out of or are based upon an

untrue statement or alleged untrue statement of a material fact contained in the Registration Statement, any Preliminary Prospectus, the Pricing Prospectus or the Prospectus, or any amendment or supplement thereto, any Issuer Free Writing Prospectus, or any Section 5(d) Writing, or arise out of or are based upon the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein not misleading, in each case only with respect to such Selling Stockholder’s Selling Stockholder Information and to the extent, but only to the extent, that such untrue statement or alleged untrue statement or omission or alleged omission was made in reliance upon and in conformity with such Selling Stockholder’s Selling Stockholder Information; and will reimburse each Underwriter for any legal or other expenses reasonably incurred by such Underwriter in connection with investigating or defending any such action or claim as such expenses are incurred; provided, however, that such Selling Stockholder shall not be liable in any such case to the extent that any such loss, claim, damage or liability arises out of or is based upon an untrue statement or alleged untrue statement or omission or alleged omission made in the Registration Statement, any Preliminary Prospectus, the Pricing Prospectus or the Prospectus, or any amendment or supplement thereto, or any Issuer Free Writing Prospectus, or any Section 5(d) Writing, in reliance upon and in conformity with Underwriter Information. Such Selling Stockholder’s liability under this subsection (b) shall not exceed the proceeds (net of any underwriting discounts and commissions but before deducting expenses) received by such Selling Stockholder from the sale of the Shares sold by such Selling Stockholder hereunder (the “Selling Stockholder Proceeds”) less any amounts that such Selling Stockholder is obligated to pay under subsection (e) below.

(c) Each Underwriter will indemnify and hold harmless the Company and each Selling Stockholder against any losses, claims, damages or liabilities to which the Company or such Selling Stockholder may become subject, under the Act or otherwise, insofar as such losses, claims, damages or liabilities (or actions in respect thereof) arise out of or are based upon an untrue statement or alleged untrue statement of a material fact contained in the Registration Statement, any Preliminary Prospectus, the Pricing Prospectus or the Prospectus, or any amendment or supplement thereto, or any Issuer Free Writing Prospectus or arise out of or are based upon the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein not misleading, in each case to the extent, but only to the extent, that such untrue statement or alleged untrue statement or omission or alleged omission was made in the Registration Statement, any Preliminary Prospectus, the Pricing Prospectus or the Prospectus, or any amendment or supplement thereto, or any Issuer Free Writing Prospectus, in reliance upon and in conformity with Underwriter Information; and will reimburse the Company and each Selling Stockholder for any legal or other expenses reasonably incurred by the Company or such Selling Stockholder in connection with investigating or defending any such action or claim as such expenses are incurred.

(d) Promptly after receipt by an indemnified party under subsection (a), (b) or (c) of this Section 9 of notice of the commencement of any action, such indemnified party shall, if a claim in respect thereof is to be made against the indemnifying party under such subsection, notify the indemnifying party in writing of the commencement thereof; but the omission so to notify the indemnifying party shall not relieve it from any liability which it may have to any indemnified party otherwise than under such subsection. In case any such action shall be brought against any indemnified party and it shall notify the indemnifying party of the commencement

thereof, the indemnifying party shall be entitled to participate therein and, to the extent that it shall wish, jointly with any other indemnifying party similarly notified, to assume the defense thereof, with counsel reasonably satisfactory to such indemnified party (who shall not, except with the consent of the indemnified party, be counsel to the indemnifying party), and, after notice from the indemnifying party to such indemnified party of its election so to assume the defense thereof, the indemnifying party shall not be liable to such indemnified party under such subsection for any legal expenses of other counsel or any other expenses, in each case subsequently incurred by such indemnified party, in connection with the defense thereof other than reasonable costs of investigation. No indemnifying party shall, without the written consent of the indemnified party, effect the settlement or compromise of, or consent to the entry of any judgment with respect to, any pending or threatened action or claim in respect of which indemnification or contribution may be sought hereunder (whether or not the indemnified party is an actual or potential party to such action or claim) unless such settlement, compromise or judgment (i) includes an unconditional release of the indemnified party from all liability arising out of such action or claim and (ii) does not include a statement as to or an admission of fault, culpability or a failure to act, by or on behalf of any indemnified party.

(e) If the indemnification provided for in this Section 9 is unavailable to or insufficient to hold harmless an indemnified party under subsection (a), (b) or (c) above in respect of any losses, claims, damages or liabilities (or actions in respect thereof) referred to therein, then each indemnifying party shall contribute to the amount paid or payable by such indemnified party as a result of such losses, claims, damages or liabilities (or actions in respect thereof) in such proportion as is appropriate to reflect the relative benefits received by the Company and the Selling Stockholders on the one hand and the Underwriters on the other from the offering of the Shares. If, however, the allocation provided by the immediately preceding sentence is not permitted by applicable law or if the indemnified party failed to give the notice required under subsection (d) above, then each indemnifying party shall contribute to such amount paid or payable by such indemnified party in such proportion as is appropriate to reflect not only such relative benefits but also the relative fault of the Company and the Selling Stockholders on the one hand and the Underwriters on the other in connection with the statements or omissions which resulted in such losses, claims, damages or liabilities (or actions in respect thereof), as well as any other relevant equitable considerations. The relative benefits received by the Company and the Selling Stockholders on the one hand and the Underwriters on the other shall be deemed to be in the same proportion as the total net proceeds from the offering (before deducting expenses) received by the Company and the Selling Stockholders bear to the total underwriting discounts and commissions received by the Underwriters, in each case as set forth in the table on the cover page of the Prospectus. The relative fault shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or the omission or alleged omission to state a material fact relates to information supplied by the Company or the Selling Stockholders on the one hand or the Underwriters on the other and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission. The Company ,each of the Selling Stockholders and the Underwriters agree that it would not be just and equitable if contribution pursuant to this subsection (e) were determined by pro rata allocation (even if the Underwriters were treated as one entity for such purpose) or by any other method of allocation which does not take account of the equitable considerations referred to above in this subsection (e). The amount paid or payable by an indemnified party as a result of the losses, claims, damages or liabilities (or actions in

respect thereof) referred to above in this subsection (e) shall be deemed to include any legal or other expenses reasonably incurred by such indemnified party in connection with investigating or defending any such action or claim. Notwithstanding the provisions of this subsection (e), (i) 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 it and distributed to the public were offered to the public exceeds the amount of any damages which such Underwriter has otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission and (ii) no Selling Stockholder shall be required to contribute any amount in excess of such Selling Stockholder’s Selling Stockholder Proceeds less any amounts that such Selling Stockholder is obligated to pay under subsection (b) above. 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 in this subsection (e) to contribute are several in proportion to their respective underwriting obligations and not joint.

(f) The obligations of the Company and the Selling Stockholders under this Section 9 shall be in addition to any liability which the Company and the Selling Stockholders may otherwise have and shall extend, upon the same terms and conditions, to each officer and director of each Underwriter and each person, if any, who controls any Underwriter within the meaning of the Act and each broker-dealer affiliate of any Underwriter; and the obligations of the Underwriters under this Section 9 shall be in addition to any liability which the respective Underwriters may otherwise have and shall extend, upon the same terms and conditions, to each officer and director of the Company (including any person who, with his or her consent, is named in the Registration Statement as about to become a director of the Company) and the Selling Stockholders and to each person, if any, who controls the Company or any Selling Stockholder within the meaning of the Act.

10.

(a) If any Underwriter shall default in its obligation to purchase the Shares that it has agreed to purchase hereunder at a Time of Delivery, you may in your discretion arrange for you or another party or other parties to purchase such Shares on the terms contained herein. If within thirty six hours after such default by any Underwriter you do not arrange for the purchase of such Shares, then the Company and the Selling Stockholders shall be entitled to a further period of thirty six hours within which to procure another party or other parties reasonably satisfactory to you to purchase such Shares on such terms. In the event that, within the respective prescribed periods, you notify the Company and the Selling Stockholders that you have so arranged for the purchase of such Shares, or the Company or a Selling Stockholder notifies you that it has so arranged for the purchase of such Shares, you or the Company or the Selling Stockholders shall have the right to postpone such Time of Delivery for a period of not more than seven days, in order to effect whatever changes may thereby be made necessary in the Registration Statement or the Prospectus, or in any other documents or arrangements, and the Company agrees to file promptly any amendments or supplements to the Registration Statement or the Prospectus which in your opinion may thereby be made necessary. The term “Underwriter” as used in this Agreement shall include any person substituted under this Section with like effect as if such person had originally been a party to this Agreement with respect to such Shares.

(b) If, after giving effect to any arrangements for the purchase of the Shares of a defaulting Underwriter or Underwriters by you, the Company and the Selling Stockholders as provided in subsection (a) above, the aggregate number of such Shares which remains unpurchased does not exceed one eleventh of the aggregate number of all the Shares to be purchased at such Time of Delivery, then the Company and the Selling Stockholders shall have the right to require each non defaulting Underwriter to purchase the number of Shares which such Underwriter agreed to purchase hereunder at such Time of Delivery and, in addition, to require each non defaulting Underwriter to purchase its pro rata share (based on the number of Shares which such Underwriter agreed to purchase hereunder) of the Shares of such defaulting Underwriter or Underwriters for which such arrangements have not been made; but nothing herein shall relieve a defaulting Underwriter from liability for its default.

(c) If, after giving effect to any arrangements for the purchase of the Shares of a defaulting Underwriter or Underwriters by you, the Company and the Selling Stockholders as provided in subsection (a) above, the aggregate number of such Shares which remains unpurchased exceeds one eleventh of the aggregate number of all of the Shares to be purchased at such Time of Delivery, or if the Company and the Selling Stockholders shall not exercise the right described in subsection (b) above to require non defaulting Underwriters to purchase Shares of a defaulting Underwriter or Underwriters, then this Agreement (or, with respect to a Second Time of Delivery, the obligations of the Underwriters to purchase and of the Company and the Selling Stockholders to sell the Optional Shares) shall thereupon terminate, without liability on the part of any non defaulting Underwriter, the Company or the Selling Stockholders, except for the expenses to be borne by the Company, the Selling Stockholders and the Underwriters as provided in Section 7 hereof and the indemnity and contribution agreements in Section 9 hereof; but nothing herein shall relieve a defaulting Underwriter from liability for its default.

11. The respective indemnities, agreements, representations, warranties and other statements of the Company, the Selling Stockholders and the several Underwriters, as set forth in this Agreement or made by or on behalf of them, respectively, pursuant to this Agreement, shall remain in full force and effect, regardless of any investigation (or any statement as to the results thereof) made by or on behalf of any Underwriter or any controlling person of any Underwriter, or the Company, or any of the Selling Stockholders, or any officer or director or controlling person of the Company, or any controlling person of any Selling Stockholder, and shall survive delivery of and payment for the Shares.

12. If this Agreement shall be terminated pursuant to Section 10 hereof, neither the Company nor the Selling Stockholders shall then be under any liability to any Underwriter except as provided in Sections 7 and 9 hereof; but, if for any other reason any Shares are not delivered by or on behalf of the Company and the Selling Stockholders as provided herein, the Company will reimburse the Underwriters through you for all out of pocket expenses approved in writing by you, including fees and disbursements of counsel, reasonably incurred by the Underwriters in making preparations for the purchase, sale and delivery of the Shares not so delivered, but the Company and the Selling Stockholders shall then be under no further liability to any Underwriter except as provided in Sections 7 and 9 hereof.

13. In all dealings hereunder, you shall act on behalf of each of the Underwriters, and the parties hereto shall be entitled to act and rely upon any statement, request, notice or agreement on behalf of any Underwriter made or given by you as the Representatives ;and in all dealings with any Selling Stockholder hereunder, you and the Company shall be entitled to act and rely upon any statement, request, notice or agreement on behalf of such Selling Stockholder made or given by any or all of the Attorneys in Fact for such Selling Stockholder.

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 and the Selling Stockholders, 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.

All statements, requests, notices and agreements hereunder shall be in writing, and if to the Underwriters shall be delivered or sent by mail, telex or facsimile transmission to (i) Goldman, Sachs & Co., 200 West Street, New York, New York 10282, Attention: Registration Department, (ii) Merrill Lynch, Pierce, Fenner & Smith Incorporated, One Bryant Park, New York, New York 10036, Attention: Equity Capital Markets, and (iii) Deutsche Bank Securities Inc., 60 Wall Street, 2nd Floor, New York, New York 10005, Attention: Equity Capital Markets – Syndicate Desk, with a copy to Deutsche Bank Securities Inc., 60 Wall Street, 36th Floor, New York, New York 10005, Attention: General Counsel, fax: (212) ###-###-####, and with a copy to Goodwin Procter LLP, Exchange Place, Boston, Massachusetts 02109, Attention: Mark T. Bettencourt, Esq. and Joseph C. Theis, Esq.; if to any Selling Stockholder shall be delivered or sent by mail, telex or facsimile transmission to the Attorney-in-Fact at the address of the Company set forth on the cover of the Registration Statement, Attention: General Counsel, with a copy to counsel for such Selling Stockholder at its address set forth in Schedule II hereto; if to the Company shall be delivered or sent by mail, telex or facsimile transmission to the address of the Company set forth on the cover of the Registration Statement, Attention: Secretary, with a copy to Wilmer Cutler Pickering Hale and Dorr LLP, 60 State Street, Boston, Massachusetts 02109, Attention: Mark G. Borden, Esq., David A. Westenberg, Esq. and Jason C. Kropp, Esq.; and if to any stockholder that has delivered a Lock-Up Agreement shall be delivered or sent by mail to his or her respective address provided in Schedule IV hereto or such other address as such stockholder provides in writing to the Company; provided, however, that any notice to an Underwriter pursuant to Section 9(d) hereof shall be delivered or sent by mail, telex or facsimile transmission to such Underwriter at its address set forth in its Underwriters’ Questionnaire or telex constituting such Questionnaire, which address will be supplied to the Company or the Selling Stockholders by you on request. Any such statements, requests, notices or agreements shall take effect upon receipt thereof.

14. This Agreement shall be binding upon, and inure solely to the benefit of, the Underwriters, the Company and the Selling Stockholders and, to the extent provided in Sections 9 and 11 hereof, the officers and directors of the Company and each person who controls the Company, any Selling Stockholder or any Underwriter, and their respective heirs, executors, administrators, successors and assigns, and no other person shall acquire or have any right under or by virtue of this Agreement. No purchaser of any of the Shares from any Underwriter shall be deemed a successor or assign by reason merely of such purchase.

15. Time shall be of the essence of this Agreement. As used herein, the term “business day” shall mean any day when the Commission’s office in Washington, D.C. is open for business.

16. The Company and the Selling Stockholders, severally and not jointly, acknowledge and agree that (i) the purchase and sale of the Shares pursuant to this Agreement is an arm’s-length commercial transaction between the Company and the Selling Stockholders, on the one hand, and the several Underwriters, on the other, (ii) in connection therewith and with the process leading to such transaction each Underwriter is acting solely as a principal and not the agent or fiduciary of the Company or any Selling Stockholder, (iii) no Underwriter has assumed an advisory or fiduciary responsibility in favor of the Company or any Selling Stockholder with respect to the offering contemplated hereby or the process leading thereto (irrespective of whether such Underwriter has advised or is currently advising the Company or any Selling Stockholder on other matters) or any other obligation to the Company or any Selling Stockholder except the obligations expressly set forth in this Agreement and (iv) the Company and each Selling Stockholder has consulted its own legal and financial advisors to the extent it deemed appropriate. The Company and each Selling Stockholder agrees that it will not claim that the Underwriters, or any of them, has rendered advisory services of any nature or respect, or owes a fiduciary or similar duty to the Company or any Selling Stockholder, in connection with such transaction or the process leading thereto.

17. This Agreement supersedes all prior agreements and understandings (whether written or oral) between or among the Company, the Selling Stockholders and the Underwriters, or any of them, with respect to the subject matter hereof.

18. This Agreement shall be governed by and construed in accordance with the laws of the State of New York without regard to principles of conflict of laws that would result in the application of the laws of any other jurisdiction.

19. The Company, each Selling Stockholder and each of the Underwriters hereby irrevocably waives, to the fullest extent permitted by applicable law, any and all right to trial by jury in any legal proceeding arising out of or relating to this Agreement or the transactions contemplated hereby.

20. This Agreement may be executed by any one or more of the parties hereto in any number of counterparts, each of which shall be deemed to be an original, but all such counterparts shall together constitute one and the same instrument.

21. Notwithstanding anything herein to the contrary, the Company and the Selling Stockholders are authorized to disclose to any persons the U.S. federal and state income tax treatment and tax structure of the potential transaction and all materials of any kind (including tax opinions and other tax analyses) provided to the Company and the Selling Stockholders relating to tax treatment and structure, without the Underwriters imposing any limitation of any kind. However, any information relating to the tax treatment and tax structure shall remain confidential (and the foregoing sentence shall not apply) to the extent necessary to enable any person to comply with securities laws. For this purpose, “tax structure” is limited to any facts that may be relevant to tax treatment.

If the foregoing is in accordance with your understanding, please sign and return to us six counterparts hereof (one for the Company, one for each of the Representatives and one for each counsel and the Custodian), and upon the acceptance hereof by you, on behalf of each of the Underwriters, this letter and such acceptance hereof shall constitute a binding agreement among each of the Underwriters, the Company and each of the Selling Stockholders. It is understood that your acceptance of this letter on behalf of each of the Underwriters is pursuant to the authority set forth in a form of Agreement among Underwriters, the form of which shall be submitted to the Company and the Selling Stockholders for examination, upon request, but without warranty on your part as to the authority of the signers thereof.

[Remainder of Page Intentionally Left Blank.]

Any person executing and delivering this Agreement as Attorney in Fact for a Selling Stockholder represents by so doing that he has been duly appointed as Attorney in Fact by such Selling Stockholder pursuant to a validly existing and binding Power-of-Attorney that authorizes such Attorney in Fact to take such action.


Very truly yours,

Acacia Communications, Inc.

By:
		Name:
		Title:

[Signature Page to Underwriting Agreement]


[Names of Selling Stockholders]

By:
		Name:
		Title:
		As Attorney in Fact acting on behalf of each of the Selling Stockholders named in Schedule II to this Agreement.

[Signature Page to Underwriting Agreement]


Accepted as of the date hereof:

Goldman, Sachs & Co.

By:
		Name:
		Title:

Merrill Lynch, Pierce, Fenner & Smith Incorporated

By:
		Name:
		Title:

Deutsche Bank Securities Inc.

By:
		Name:
		Title:

Deutsche Bank Securities Inc.

By:
		Name:
		Title:

[Signature Page to Underwriting Agreement]

SCHEDULE I


Underwriter	Total Number of Firm Shares to be Purchased	Number of Optional Shares to be Purchased if Maximum Option Exercised
Goldman, Sachs & Co.
Merrill Lynch, Pierce, Fenner & Smith Incorporated
Deutsche Bank Securities Inc.
Needham & Company, LLC
Cowen and Company, LLC
Northland Securities, Inc.

Total

SCHEDULE II


	Total Number of Firm Shares to be Sold	Number of Optional Shares to be Sold if Maximum Option Exercised
The Company.
The Selling Stockholder(s):
[Name of Selling Stockholder](a)
[Name of Selling Stockholder](b)
[Name of Selling Stockholder](c)
[Name of Selling Stockholder](d)
[Name of Selling Stockholder](e)

Total

(a)	This Selling Stockholder is represented by [Name and Address of Counsel] and has appointed [Names of Attorneys in Fact (not less than two)], and each of them, as the Attorneys in Fact for such Selling Stockholder.

(b)	This Selling Stockholder is represented by [Name and Address of Counsel] and has appointed [Names of Attorneys in Fact (not less than two)], and each of them, as the Attorneys in Fact for such Selling Stockholder.

(c)	This Selling Stockholder is represented by [Name and Address of Counsel] and has appointed [Names of Attorneys in Fact (not less than two)], and each of them, as the Attorneys in Fact for such Selling Stockholder.

(d)	This Selling Stockholder is represented by [Name and Address of Counsel] and has appointed [Names of Attorneys in Fact (not less than two)], and each of them, as the Attorneys in Fact for such Selling Stockholder.

(e)	This Selling Stockholder is represented by [Name and Address of Counsel] and has appointed [Names of Attorneys in Fact (not less than two)], and each of them, as the Attorneys in Fact for such Selling Stockholder.

SCHEDULE III

(a)	Issuer Free Writing Prospectuses

[None]

(b)	Additional documents incorporated by reference (including any Section 5(d) Writings):

[None]

(c)	Information that, together with the Pricing Prospectus, comprises the Pricing Disclosure Package

The initial public offering price per share for the Shares is $[ ].

The number of Shares purchased by the Underwriters is [ ].

[Add any other pricing disclosure.]

SCHEDULE IV


Name of Stockholder		Address

ANNEX I

Pursuant to Section 8(d) of the Underwriting Agreement, the accountants shall furnish letters to the Underwriters to the effect that:

(i) They are independent certified public accountants with respect to the Company and its subsidiaries within the meaning of the Act and the applicable published rules and regulations thereunder;

(ii) In their opinion, the financial statements and any supplementary financial information and schedules (and, if applicable, financial forecasts and/or pro forma financial information) examined by them and included in the Prospectus or the Registration Statement comply as to form in all material respects with the applicable accounting requirements of the Act and the related published rules and regulations thereunder; and, if applicable, they have made a review in accordance with standards established by the American Institute of Certified Public Accountants of the unaudited consolidated interim financial statements, selected financial data, pro forma financial information, financial forecasts and/or condensed financial statements derived from audited financial statements of the Company for the periods specified in such letter, as indicated in their reports thereon, copies of which have been furnished to the Representatives;

(iii) They have made a review in accordance with standards established by the American Institute of Certified Public Accountants of the unaudited consolidated statements of income, consolidated balance sheets and consolidated statements of cash flows included in the Prospectus as indicated in their reports thereon, copies of which have been furnished to the Representatives, and on the basis of specified procedures including inquiries of officials of the Company who have responsibility for financial and accounting matters regarding whether the unaudited consolidated financial statements referred to in paragraph (vi)(A)(i) below comply as to form in all material respects with the applicable accounting requirements of the Act and the related published rules and regulations, nothing came to their attention that cause them to believe that the unaudited consolidated financial statements do not comply as to form in all material respects with the applicable accounting requirements of the Act and the related published rules and regulations;

(iv) The unaudited selected financial information with respect to the consolidated results of operations and financial position of the Company for the [three] most recent fiscal years included in the Prospectus agrees with the corresponding amounts (after restatements where applicable) in the audited consolidated financial statements for such [three] fiscal years which are included in the Registration Statement;

(v) They have compared the information in the Prospectus under selected captions with the disclosure requirements of Regulation S-K and on the basis of limited procedures specified in such letter nothing came to their attention as a result of the foregoing procedures that caused them to believe that this information does not conform in all material respects with the disclosure requirements of Items 301, 302, 402 and 503(d), respectively, of Regulation S-K;

(vi) On the basis of limited procedures, not constituting an examination in accordance with generally accepted auditing standards, consisting of a reading of the unaudited financial statements and other information referred to below, a reading of the latest available interim financial statements of the Company and its subsidiaries, inspection of the minute books of the Company and its subsidiaries since the date of the latest audited financial statements included in the Prospectus, inquiries of officials of the Company and its subsidiaries responsible for financial and accounting matters and such other inquiries and procedures as may be specified in such letter, nothing came to their attention that caused them to believe that:

(A) (i) the unaudited consolidated statements of income, consolidated balance sheets and consolidated statements of cash flows included in the Prospectus do not comply as to form in all material respects with the applicable accounting requirements of the Act and the related published rules and regulations, or (ii) any material modifications should be made to the unaudited condensed consolidated statements of income, consolidated balance sheets and consolidated statements of cash flows included in the Prospectus for them to be in conformity with generally accepted accounting principles;

(B) any other unaudited income statement data and balance sheet items included in the Prospectus do not agree with the corresponding items in the unaudited consolidated financial statements from which such data and items were derived, and any such unaudited data and items were not determined on a basis substantially consistent with the basis for the corresponding amounts in the audited consolidated financial statements included in the Prospectus;

(C) the unaudited financial statements which were not included in the Prospectus but from which were derived any unaudited condensed financial statements referred to in clause (A) and any unaudited income statement data and balance sheet items included in the Prospectus and referred to in clause (B) were not determined on a basis substantially consistent with the basis for the audited consolidated financial statements included in the Prospectus;

(D) any unaudited pro forma consolidated condensed financial statements included in the Prospectus do not comply as to form in all material respects with the applicable accounting requirements of the Act and the published rules and regulations thereunder or the pro forma adjustments have not been properly applied to the historical amounts in the compilation of those statements;

(E) as of a specified date not more than five days prior to the date of such letter, there have been any changes in the consolidated capital stock (other than issuances of capital stock upon exercise of options and stock appreciation rights, upon earn outs of performance shares and upon conversions of convertible securities, in each case which were outstanding on the date of the latest financial

statements included in the Prospectus) or any increase in the consolidated long term debt of the Company and its subsidiaries, or any decreases in consolidated net current assets or stockholders’ equity or other items specified by the Representatives, or any increases in any items specified by the Representatives, in each case as compared with amounts shown in the latest balance sheet included in the Prospectus, except in each case for changes, increases or decreases which the Prospectus discloses have occurred or may occur or which are described in such letter; and

(F) for the period from the date of the latest financial statements included in the Prospectus to the specified date referred to in clause (E) there were any decreases in consolidated net revenues or operating profit or the total or per share amounts of consolidated net income or other items specified by the Representatives, or any increases in any items specified by the Representatives, in each case as compared with the comparable period of the preceding year and with any other period of corresponding length specified by the Representatives, except in each case for decreases or increases which the Prospectus discloses have occurred or may occur or which are described in such letter; and

(vii) In addition to the examination referred to in their report(s) included in the Prospectus and the limited procedures, inspection of minute books, inquiries and other procedures referred to in paragraphs (iii) and (vi) above, they have carried out certain specified procedures, not constituting an examination in accordance with generally accepted auditing standards, with respect to certain amounts, percentages and financial information specified by the Representatives, which are derived from the general accounting records of the Company and its subsidiaries, which appear in the Prospectus, or in Part II of, or in exhibits and schedules to, the Registration Statement specified by the Representatives, and have compared certain of such amounts, percentages and financial information with the accounting records of the Company and its subsidiaries and have found them to be in agreement.

ANNEX I(a)

COPY OF COMFORT LETTER DELIVERED

PRIOR TO EXECUTION OF THIS AGREEMENT

ANNEX I(b)

FORM OF COMFORT LETTER TO BE DELIVERED

AT EACH TIME OF DELIVERY

ANNEX II(a)

FORM OF OPINION OF

COUNSEL FOR THE UNDERWRITERS

ANNEX II(b)

FORM OF OPINION OF

COUNSEL FOR THE COMPANY

ANNEX II(c)

FORM OF OPINION OF

COUNSEL FOR THE SELLING STOCKHOLDERS

ANNEX III

FORM OF PRESS RELEASE

Acacia Communications, Inc.

[Date]

Acacia Communications, Inc. (the “Company”) announced today that Goldman, Sachs & Co., the lead book-running manager in the recent public sale of [ ] shares of the Company’s common stock, is [waiving] [releasing] a lock-up restriction with respect to [ ] shares of the Company’s common stock held by [certain officers or directors] [an officer or director] of the Company. The [waiver] [release] will take effect on [ ], 201[ ], and the shares may be sold on or after such date.

This press release is not an offer for sale of the securities in the United States or in any other jurisdiction where such offer is prohibited, and such securities may not be offered or sold in the United States absent registration or an exemption from registration under the United States Securities Act of 1933, as amended.

ANNEX IV

FORM OF LOCK-UP AGREEMENT