Document:

EX-10.1

 Exhibit 10.1 

$350,000,000 
 INFINERA
CORPORATION 
 2.125% CONVERTIBLE SENIOR NOTES DUE 2024 

UNDERWRITING AGREEMENT 

September 6, 2018 
  

 September 6, 2018 

To the Managers named in Schedule I hereto 
 for the Underwriters
named in Schedule II hereto 
 Ladies and Gentlemen: 

Infinera Corporation, a Delaware corporation (the “Company”), proposes to issue and sell to the several underwriters named in
Schedule II hereto (the “Underwriters”), for whom you are acting as managers (the “Managers”), $350,000,000 principal amount of its 2.125% Convertible Senior Notes due 2024 (the “Firm
Securities”), as set forth in Schedule I hereto and to be issued pursuant to the provisions of an indenture (the “Base Indenture”), as supplemented by a supplemental indenture (the Base Indenture, as so supplemented, the
“Indenture”), in each case, to be dated as of September 11, 2018, between the Company and U.S. Bank National Association, as Trustee (the “Trustee”). The Company also proposes to issue and sell to the several
Underwriters not more than an additional $52,500,000 aggregate principal amount of its 2.125% Convertible Senior Notes due 2024 (the “Additional Securities”) if and to the extent that you, as Managers, shall have determined to
exercise, on behalf of the Underwriters, the right to purchase such Additional Securities granted to the Underwriters in Section 2 hereof, solely for the purpose of covering over-allotments made in connection with the offering of the Firm
Securities. The Firm Securities and the Additional Securities are hereinafter collectively referred to as the “Securities”. The Company’s common stock, par value $0.001 per share, is hereinafter referred to as the
“Common Stock.” The Securities will be convertible into cash, shares of Common Stock (the “Underlying Securities”) or a combination of cash and Underlying Securities, at the Company’s election. If the firm or
firms listed in Schedule II hereto include only the Managers listed in Schedule I hereto, then the terms “Underwriters” and “Managers” as used herein shall each be deemed to refer to such firm or firms. 

In connection with the offering of the Firm Securities, the Company is entering into capped call transactions with one or more of the
Underwriters or their respective affiliates and/or other financial institutions (the “Option Counterparties”) pursuant to separate capped call transaction confirmations (the “Base Capped Call Confirmations”), to be
dated the date hereof, and in connection with any exercise by the Underwriters of their option to purchase any Additional Securities, the Company and the Option Counterparties may enter into additional capped call transactions pursuant to additional
capped call transaction confirmations (the “Additional Capped Call Confirmations”), to be dated the date on which the Underwriters exercise their option to purchase such Additional Securities. The Base Capped Call Confirmations and
the Additional Capped Call Confirmations are referred to herein collectively as the “Capped Call Confirmations.” 
 The Company
has filed with the Securities and Exchange Commission (the “Commission”) a registration statement, including a prospectus, (the file number of which is set forth in Schedule I hereto) on
Form S-3, relating to securities (the “Shelf Securities”), including the Securities and the Underlying Securities, to be issued from time to time by the Company. The registration
statement as amended to the date of this 

 
Agreement, including the information (if any) deemed to be part of the registration statement at the time of effectiveness pursuant to Rule 430A or Rule 430B under the Securities Act of
1933, as amended (the “Securities Act”), is hereinafter referred to as the “Registration Statement,” and the related prospectus covering the Shelf Securities dated September 5, 2018 in the form first used to
confirm sales of the Securities (or in the form first made available to the Underwriters by the Company to meet requests of purchasers pursuant to Rule 173 under the Securities Act) is hereinafter referred to as the “Basic
Prospectus.” The Basic Prospectus, as supplemented by the prospectus supplement specifically relating to the Securities in the form first used to confirm sales of the Securities (or in the form first made available to the Underwriters by
the Company to meet requests of purchasers pursuant to Rule 173 under the Securities Act) is hereinafter referred to as the “Prospectus.” The term “preliminary prospectus” means any preliminary form of the
Prospectus. For purposes of this Agreement, “free writing prospectus” has the meaning set forth in Rule 405 under the Securities Act, “Time of Sale Prospectus” means the documents and pricing information set forth
opposite the caption “Time of Sale Prospectus” in Schedule I hereto, and “broadly available road show” means a “bona fide electronic road show” as defined in Rule 433(h)(5) under the Securities Act that has been
made available without restriction to any person. As used herein, the terms “Registration Statement,” “Basic Prospectus,” “preliminary prospectus,” “Time of Sale Prospectus” and “Prospectus” shall
include the documents, if any, incorporated by reference therein on the date hereof. The terms “supplement,” “amendment,” and “amend” as used herein with respect to the Registration Statement, the
Basic Prospectus, the Time of Sale Prospectus, any preliminary prospectus or the Prospectus shall include all documents subsequently filed by the Company with the Commission pursuant to the Securities Exchange Act of 1934, as amended (the
“Exchange Act”), that are deemed to be incorporated by reference therein. 
 1. Representations and Warranties. The
Company represents and warrants to and agrees with each of the Underwriters that: 
 (a) The Registration Statement has
become effective; no stop order suspending the effectiveness of the Registration Statement is in effect, and no proceedings for such purpose are pending before or threatened by the Commission. The Company is a well-known seasoned issuer (as defined
in Rule 405 under the Securities Act) eligible to use the Registration Statement as an automatic shelf registration statement and the Company has not received notice that the Commission objects to the use of the Registration Statement as an
automatic shelf registration statement. 
 (b) (i) Each document, if any, filed or to be filed pursuant to the Exchange
Act and incorporated by reference in the Time of Sale Prospectus or the Prospectus complied or will comply when so filed in all material respects with the Exchange Act and the applicable rules and regulations of the Commission thereunder,
(ii) each part of the Registration Statement, when such part became effective, did not contain, and each such part, as amended or supplemented, if applicable, will not contain any untrue statement of a material fact or omit to state a material
fact required to be stated therein or necessary to make the statements 

  
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therein not misleading, (iii) the Registration Statement as of the date hereof does not contain any 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, (iv) the Registration Statement and the Prospectus comply, and as amended or supplemented, if applicable, will comply in all material respects with the Securities Act and the
applicable rules and regulations of the Commission thereunder, (v) the Time of Sale Prospectus does not, and at the time of each sale of the Securities in connection with the offering when the Prospectus is not yet available to prospective
purchasers and at the Closing Date (as defined in Section 4), the Time of Sale Prospectus, as then amended or supplemented by the Company, if applicable, will not, contain any untrue statement of a material fact or omit to state a material fact
necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading, (vi) each other free writing prospectus identified in Schedule I hereto and each broadly available road show, if any, when
considered together with the Time of Sale Prospectus, does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements therein, in the light of the circumstances under which they were made,
not misleading and (vii) the Prospectus does not contain and, as amended or supplemented, if applicable, will not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements therein, in the
light of the circumstances under which they were made, not misleading, except that the representations and warranties set forth in this paragraph do not apply to (A) statements or omissions in the Registration Statement, the Time of Sale
Prospectus or the Prospectus based upon information relating to any Underwriter furnished to the Company in writing by such Underwriter through the Managers expressly for use therein or (B) that part of the Registration Statement that
constitutes the Statement of Eligibility (Form T-1) under the Trust Indenture Act of 1939, as amended (the “Trust Indenture Act”), of the Trustee. 

(c) The Company is not an “ineligible issuer” in connection with the offering pursuant to Rules 164, 405 and 433
under the Securities Act. Any free writing prospectus that the Company is required to file pursuant to Rule 433(d) under the Securities Act has been, or will be, filed with the Commission in accordance with the requirements of the Securities Act and
the applicable rules and regulations of the Commission thereunder. Each free writing prospectus that the Company has filed, or is required to file, pursuant to Rule 433(d) under the Securities Act or that was prepared by or on behalf of or used or
referred to by the Company complies or will comply in all material respects with the requirements of the Securities Act and the applicable rules and regulations of the Commission thereunder. Except for the free writing prospectuses, if any,
identified in Schedule I hereto, and electronic road shows furnished to the Managers before first use, the Company has not prepared, used or referred to, and will not, without the Managers’ prior consent, prepare, use or refer to, any free
writing prospectus. 

  
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 (d) The Company has been duly incorporated, is validly existing as a
corporation in good standing under the laws of the jurisdiction of its incorporation, has the corporate power and authority to own its property and to conduct its business as described in the Time of Sale Prospectus and is duly qualified to transact
business and is in good standing in each jurisdiction in which the conduct of its business or its ownership or leasing of property requires such qualification, except to the extent that the failure to be so qualified or be in good standing would not
have a material adverse effect on the condition, financial or otherwise, or on the earnings, business or operations of the Company and its subsidiaries, taken as a whole (a “Material Adverse Effect”). 

(e) Each subsidiary of the Company has been duly incorporated, is validly existing in good standing (which concept shall
include the functional equivalent of “good standing” in non-U.S. jurisdictions, to the extent applicable) under the laws of the jurisdiction of its organization, has the corporate power and authority
(or similar company or partnership power and authority) to own its property and to conduct its business as described in the Time of Sale Prospectus and is duly qualified to transact business and is in good standing in each jurisdiction in which the
conduct of its business or its ownership or leasing of property requires such qualification, except to the extent that the failure to be so qualified or be in good standing would not have a Material Adverse Effect; all of the issued shares of
capital stock (or equivalent equity interests, as applicable) of each subsidiary of the Company have been duly and validly authorized and issued, are fully paid and non-assessable and are owned directly by the
Company, free and clear of all liens, encumbrances, equities or claims, except to the extent directors’ qualifying shares are required by law. 

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

(g) The authorized capital stock of the Company conforms in all material respects as to legal matters to the description
thereof contained in each of the Time of Sale Prospectus and the Prospectus. 
 (h) The shares of Common Stock outstanding as
of the date hereof have been duly authorized and are validly issued, fully paid and non-assessable. 

(i) Reserved. 

(j) The Securities have been duly authorized and, when executed and authenticated in accordance with the provisions of the
Indenture and delivered to and paid for by the Underwriters in accordance with the terms of this Agreement, will be valid and binding obligations of the Company, enforceable in accordance with their terms, subject to applicable bankruptcy,
insolvency and similar laws affecting creditors’ rights generally and equitable principles of general applicability (the “Enforceability Exceptions”) and will be entitled to the benefits of the Indenture pursuant to which such
Securities are to be issued, and the Securities and the Indenture will conform in all material respects to the descriptions thereof in each of the Time of Sale Prospectus and the Final Prospectus. 

  
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 (k) The maximum number of Underlying Securities initially issuable upon
conversion of the Securities (assuming the Company elects to issue and deliver solely Underlying Securities in respect of all conversions and including the maximum number of Underlying Securities that may be issued upon conversion of the Securities
in connection with a “Make-Whole Fundamental Change”, as such term is defined in the Indenture) (the “Maximum Number of Underlying Securities”) have been duly authorized and reserved for issuance upon such conversion and,
when and to the extent issued upon conversion of the Securities in accordance with the terms of the Securities and the Indenture, will be validly issued, fully paid and non-assessable, and the issuance of the
Maximum Number of Underlying Securities will not be subject to any preemptive or similar rights. 
 (l) On the Closing Date,
the Indenture will have been duly qualified under the Trust Indenture Act and duly authorized, executed and delivered by the Company, and assuming due authorization, execution and delivery by the Trustee, will be a valid and binding agreement of,
the Company, enforceable in accordance with its terms, subject to the Enforceability Exceptions. 
 (m) The execution and
delivery by the Company of, and the performance by the Company of its obligations under, this Agreement, the Indenture and the Securities (together, the “Transaction Documents”) and the Capped Call Confirmations will not contravene
any provision of or constitute a default under (i) applicable law, (ii) the certificate of incorporation or by-laws of the Company, (iii) any agreement or other instrument binding upon the
Company or any of its subsidiaries that is material to the Company and its subsidiaries, taken as a whole, or (iv) any judgment, order or decree of any governmental body, agency or court having jurisdiction over the Company or any subsidiary,
except, in the cases of clauses (i), (iii) and (iv) above, as would not reasonably be expected to have a Material Adverse Effect or a material adverse effect on the Company’s ability to perform its obligations under the Transaction
Documents or on its ability to consummate the transactions contemplated herein, and no consent, approval, authorization or order of, or qualification with, any governmental body or agency is required for the performance by the Company of its
obligations under the Transaction Documents, except for those that have been, or will have been prior to the Closing Date, obtained, and such as may be required by the securities or Blue Sky laws of the various states in connection with the offer
and sale of the Securities, and except where the failure to obtain such consents, individually or in the aggregate, would not reasonably be expected to have a Material Adverse Effect or a material adverse effect on the Company’s ability to
conduct the offering of the Securities. 

  
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 (n) There has not occurred any material adverse change, or any development
that would reasonably be expected to cause a prospective material adverse change, in the condition, financial or otherwise, or in the earnings, business or operations of the Company and its subsidiaries, taken as a whole, from that set forth in the
Time of Sale Prospectus. 
 (o) Other than as set forth in the Time of Sale Prospectus, (i) there are no legal or
governmental proceedings pending to which the Company or any of its subsidiaries is a party or to which any of the properties of the Company or any of its subsidiaries is subject that would individually or in the aggregate reasonably be expected to
have a Material Adverse Effect or a material adverse effect on the power or ability of the Company to perform its obligations under the Transaction Documents or to consummate the transactions contemplated herein or therein; and (ii) to the
Company’s knowledge, no such proceedings are threatened. There are no such proceedings that are required to be described in the Registration Statement or the Prospectus that are not so described and there are no statutes, regulations, contracts
or other documents that are required to be described in the Registration Statement or the Prospectus or to be filed as exhibits to the Registration Statement that are not described or filed as required. 

(p) The Company and its subsidiaries own or possess or can obtain on commercially reasonable terms adequate rights to use all
patents, patent applications, trademarks, service marks, trade names, trademark registrations, service mark registrations, copyrights, licenses, know-how (including trade secrets and other unpatented and/or
unpatentable proprietary or confidential information, systems or procedures) and other intellectual property (“Intellectual Property”) necessary for the conduct of their respective businesses as described in the Time of Sale
Prospectus, except where the failure to so own, possess or acquire such rights would not reasonably be expected to have a Material Adverse Effect, and except as described in the Time of Sale Prospectus, the Company and its subsidiaries have not
received any notice of any claim of infringement, misappropriation or violation of or conflict with any such rights of others that, singly or in the aggregate would reasonably be expected to have a Material Adverse Effect. The Company and its
subsidiaries have taken reasonable steps in accordance with normal industry practice to maintain the confidentiality of all Intellectual Property of the Company and its subsidiary that is material to the business or operation of the Company or any
subsidiary and the value of which to the Company or any subsidiary is contingent upon maintaining the confidentiality thereof, and none of such Intellectual Property has been disclosed other than to employees, representatives and agents of the
Company or any subsidiary, all of whom are bound by written confidentiality agreements. 
 (q) The Company and its
subsidiaries (i) are in compliance with any and all applicable foreign, federal, state and local laws and regulations relating to the protection of human health and safety, the environment or hazardous or toxic substances or wastes, pollutants
or contaminants (“Environmental Laws”), (ii) have received all permits, licenses or other approvals required of them under applicable Environmental Laws to conduct their respective businesses and (iii) are in compliance
with all terms and conditions of any such permit, license or 

  
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approval, except where such noncompliance with Environmental Laws, failure to receive required permits, licenses or other approvals or failure to comply with the terms and conditions of such
permits, licenses or approvals would not, singly or in the aggregate, reasonably be expected to have a Material Adverse Effect. 

(r) There are no costs or liabilities associated with Environmental Laws (including, without limitation, any capital or
operating expenditures required for clean-up, closure of properties or compliance with Environmental Laws or any permit, license or approval, any related constraints on operating activities and any potential
liabilities to third parties) which would, singly or in the aggregate, reasonably be expected to have a Material Adverse Effect. 

(s) Except as described in the Time of Sale Prospectus, (a) 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 it is reasonably believed no monetary sanctions of $100,000
or more will be imposed, (b) the Company and its subsidiaries are not aware of any facts or issues regarding compliance with Environmental Laws, or liabilities or other obligations under Environmental Laws, that could reasonably be expected to
have a material effect on the capital expenditures, earnings or competitive position of the Company and its subsidiaries, and (c) none of the Company and its subsidiaries anticipates material capital expenditures relating to any Environmental
Laws. 
 (t) The Company is not, and after giving effect to the transactions contemplated by the Capped Call Confirmations,
the offering and sale of the Securities and the application of the proceeds thereof as described in the Time of Sale Prospectus and the Prospectus will not be, required to register as an “investment company” as such term is defined in the
Investment Company Act of 1940, as amended (the “Investment Company Act”). 
 (u) Each preliminary
prospectus filed as part of the Registration Statement as originally filed or as part of any amendment thereto, or filed pursuant to Rule 424 under the Securities Act, complied when so filed in all material respects with the Securities Act and
the applicable rules and regulations of the Commission thereunder. 
 (v) (i) Neither the Company nor any of its
subsidiaries, nor any director, officer, or employee, nor, to the Company’s knowledge, any affiliate, agent or representative of the Company or of any of its subsidiaries or affiliates, has taken any action in furtherance of an offer, payment,
promise to pay, or authorization or approval of the payment, giving or receipt of money, property, gifts or anything else of value, directly or indirectly, to any “government official” (including any officer or employee of a government or
government-owned or controlled entity or of a public international organization, or any person acting in an official capacity for or on behalf of any of the foregoing, or any political party or party official or candidate for political office) in
order to influence official 

  
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action, or to any person in violation of any applicable anti-corruption laws; (ii) the Company and its subsidiaries and affiliates have conducted their businesses in compliance with
applicable anti-corruption laws and have instituted and maintained and will continue to maintain policies and procedures reasonably designed to promote and achieve compliance with such laws and with the representations and warranties contained
herein; and (iii) neither the Company nor its subsidiaries will use, directly or indirectly, the proceeds of the offering in furtherance of an offer, payment, promise to pay, or authorization of the payment or giving of money, or anything else
of value, to any person in violation of any applicable anti-corruption laws. 
 (w) The operations of the Company and its
subsidiaries are and have been conducted at all times in material compliance with all applicable financial recordkeeping and reporting requirements, including those of the Bank Secrecy Act, as amended by Title III of the Uniting and Strengthening
America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism Act of 2001 (USA PATRIOT Act), and the applicable anti-money laundering statutes of jurisdictions where the Company and its subsidiaries conduct business, the rules
and regulations thereunder and any related or similar rules, regulations or guidelines, issued, administered or enforced by any governmental agency (collectively, the “Anti-Money Laundering Laws”), and no action, suit or proceeding
by or before any court or governmental agency, authority or body or any arbitrator involving the Company or any of its subsidiaries with respect to the Anti-Money Laundering Laws is pending or, to the knowledge of the Company, threatened.  
 (x) (i) Neither the Company, nor any of its subsidiaries, nor any
director, officer, or employee thereof, nor, to the Company’s knowledge, any agent, affiliate or representative of the Company or any of its subsidiaries, is an individual or entity (“Person”) that is, or is owned or controlled
by one or more Persons that are: 
 (A) the subject of any sanctions administered or enforced by the U.S. Department of
Treasury’s Office of Foreign Assets Control (“OFAC”), the United Nations Security Council (“UNSC”), the European Union (“EU”), Her Majesty’s Treasury (“HMT”), or other
relevant sanctions authority (collectively, “Sanctions”), or 
 (B) located, organized or resident in a
country or territory that is the subject of Sanctions (including, without limitation, Crimea, Cuba, Iran, North Korea and Syria). 

  
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 (ii) The Company will not, directly or indirectly, use the proceeds of the offering, or
lend, contribute or otherwise make available such proceeds to any subsidiary, joint venture partner or other Person: 
 (A)
to fund or facilitate any activities or business of or with any Person or in any country or territory that, at the time of such funding or facilitation, is the subject of Sanctions; or 

(B) in any other manner that will result in a violation of Sanctions by any Person (including any Person participating in the
offering, whether as underwriter, advisor, investor or otherwise). 
 (iii) For the past 5 years, the Company and its subsidiaries have not
knowingly engaged in, are not now knowingly engaged in, and will not engage in, any dealings or transactions with any Person, or in any country or territory, that at the time of the dealing or transaction is or was the subject of Sanctions. 

(y) The Company and each of its subsidiaries have filed all federal, state, local and foreign tax returns required to be filed
through the date of this Agreement or have requested extensions thereof (except where the failure to file would not, individually or in the aggregate, reasonably be expected to have a Material Adverse Effect) and have paid all taxes required to be
paid thereon (except for cases in which the failure to file or pay would, individually or in the aggregate, not have a Material Adverse Effect, or, except as currently being contested in good faith and for which reserves required by U.S. GAAP have
been created in the financial statements of the Company), and no tax deficiency has been determined adversely to the Company or any of its subsidiaries which has had (nor does the Company nor any of its subsidiaries have any notice or knowledge of
any tax deficiency which could reasonably be expected to be determined adversely to the Company or its subsidiaries and which could, individually or in the aggregate, reasonably be expected to have) a Material Adverse Effect. 

(z) The Company and each of its subsidiaries maintain a system of internal accounting controls sufficient to provide reasonable
assurance that (i) transactions are executed in accordance with management’s general or specific authorizations; (ii) transactions are recorded as necessary to permit preparation of financial statements in conformity with generally
accepted accounting principles and to maintain asset accountability; (iii) access to assets is permitted only in accordance with management’s general or specific authorization; (iv) the recorded accountability for assets is compared
with the existing assets at reasonable intervals and appropriate action is taken with respect to any differences; and (v) the interactive data in eXtensible Business Reporting Language (“XBRL”) included or incorporated by
reference in the Registration Statement is accurate. Except as described in the Time of Sale Prospectus, since the end of the Company’s most recent audited fiscal year, there has been (i) no material weakness in the Company’s internal
control over financial reporting (whether or not remediated) and (ii) no change in the Company’s internal control over financial reporting that has materially affected, or is reasonably likely to materially affect, the Company’s
internal control over financial reporting. 

  
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 (aa) The interactive data in XBRL included or incorporated by reference in
the Registration Statement fairly presents the information called for in all material respects and has been prepared in accordance with the Commission’s rules and guidelines applicable thereto. 

(bb) The financial statements, together with the related schedules and notes, included in the Time of Sale Prospectus present
fairly in all material respects the consolidated financial position of the entities to which they relate as of and at the dates indicated and the results of their operations and cash flows for the periods specified. Such financial statements have
been prepared in all material respects in accordance with generally accepted accounting principles in the United States applied on a consistent basis throughout the periods involved, except as may be expressly stated in the related notes thereto.
The financial data set forth in the Time of Sale Prospectus under the captions “Summary Historical Consolidated and Pro Forma Financial and Other Financial Data of Infinera” and “Summary Historical Consolidated Financial Data of
Coriant” fairly present in all material respects the information set forth therein on a basis consistent with that of the audited financial statements contained in the Time of Sale Prospectus. The unaudited pro forma condensed combined
financial statements of the Company and its subsidiaries and the related notes thereto included under the caption “Unaudited Pro Forma Condensed Combined Financial Information,” and elsewhere in the Time of Sale Prospectus present fairly
in all material respects the information contained therein, have been prepared in accordance with the Commission’s rules and guidelines with respect to pro forma financial statements (except that, in accordance with the relief granted by the
Commission pursuant to its letter to the Company dated August 31, 2018, such unaudited pro forma condensed combined financial statements do not include an unaudited pro forma condensed combined statement of operations for the six months ended
June 30, 2018) and have been properly presented on the bases described therein, and the assumptions used in the preparation thereof are reasonable and the adjustments used therein are appropriate to give effect to the transaction and
circumstances referred to therein. The statistical and market related data and forward looking statements included in the Time of Sale Prospectus are based on or derived from sources that the Company believes to be reliable and accurate in all
material respects and represent their good faith estimates that are made on the basis of data derived from such sources. 

(cc) Ernst & Young LLP who have certified certain financial statements of the Company and its subsidiaries, and
have audited the Company’s internal control over financial reporting are independent registered public accountants as required by the Securities Act and the rules and regulations of the Commission thereunder. 

(dd) BDO USA, LLP who have certified certain financial statements of Telecom Holding Parent LLC and its subsidiaries are
independent registered public accountants as required by the Securities Act and the rules and regulations of the Commission thereunder. 

  
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 (ee) PricewaterhouseCoopers, LLP who have certified certain financial
statements of Telecom Holding Parent LLC and its subsidiaries are independent accountants under Rule 101 of the Code of Professional Conduct of the American Institute of Certified Public Accountants, and its rulings and interpretations. 

(ff) The Company does not have knowledge of any event or circumstance that would reasonably cause the Coriant Transaction
(defined below) to not be consummated substantially in accordance with the terms of the Unit Purchase Agreement (the “Purchase Agreement”), dated as of July 23, 2018, among the Company and Coriant Investor LLC (the
“Seller”) and Oaktree Optical Holdings, L.P. (the “Lender”) (such transaction, the “Coriant Transaction”) and as described in the Time of Sale Prospectus. To the Company’s knowledge, each
representation and warranty of the Seller and the Lender contained in the Purchase Agreement is true and correct as of the date hereof (except for representations and warranties made as of a specific date, which shall be true and correct as of such
date), in each case except where the failure of any such representation or warranty to be true and correct would not have, individually or in the aggregate, a material adverse effect on the condition, financial or otherwise, or on the earnings,
business or operations of the Seller and its subsidiaries, taken as a whole, or the ability of Seller or Lender to consummate the Coriant Transaction substantially in accordance with the terms of the Purchase Agreement and as described in the Time
of Sale Prospectus. 
 2. Agreements to Sell and Purchase. The Company hereby agrees to sell to the several Underwriters, and each
Underwriter, upon the basis of the representations and warranties herein contained, but subject to the conditions hereinafter stated, agrees, severally and not jointly, to purchase from the Company the respective principal amount of Firm Securities
set forth in Schedule II hereto opposite its name at the purchase price set forth in Schedule I hereto (the “Purchase Price”) plus accrued interest, if any, from September 6, 2018 to the Closing Date. 

On the basis of the representations and warranties contained in this Agreement, and subject to its terms and conditions, the Company agrees to
sell to the Underwriters, and the Underwriters shall have the right to purchase, severally and not jointly, up to $52,500,000 aggregate principal amount of Additional Securities, at the Purchase Price plus accrued interest, if any, to the date of
payment and delivery, solely to cover overallotments. The Managers may exercise this right on behalf of the Underwriters in whole or from time to time in part by giving written notice to the Company not later than 30 days after the date of this
Agreement. Any exercise notice shall specify the principal amount of Additional Securities to be purchased by the Underwriters and the date on which such Additional Securities are to be purchased. Each purchase date must be at least one business day
after the written notice is given, unless waived by the Company in writing, and may not be earlier than the Closing Date nor later than ten business days after the date of such notice. Additional Securities may be purchased as provided in
Section 4 solely for the purpose of covering sales of securities in excess of the number of the Firm Securities. On each day, if any, that Additional Securities are to be purchased (an “Option Closing Date”), each Underwriter
agrees, severally and not jointly, to 

  
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purchase the principal amount of Additional Securities (subject to such adjustments to eliminate denominations of less than $1,000 as the Managers may determine) that bears the same proportion to
the total principal amount of Additional Securities to be purchased on such Option Closing Date as the principal amount of Firm Securities set forth in Schedule II hereto opposite the name of such Underwriter bears to the total principal amount of
Firm Securities. 
 3. Public Offering. The Company is advised by the Managers that the Underwriters propose to make a public
offering of their respective portions of the Securities as soon after the Registration Statement and this Agreement have become effective as in their judgment is advisable. The Company is further advised by the Managers that the Securities are to be
offered to the public upon the terms set forth in the Prospectus. 
 4. Payment and Delivery. Payment for the Firm Securities shall
be made to the Company in Federal or other funds immediately available in New York City against delivery of such Firm Securities for the respective accounts of the several Underwriters on the closing date and time set forth in Schedule I
hereto, or at such other time on the same or such other date, not later than the fifth business day thereafter, as may be mutually agreed in writing by the Company and the Managers. The time and date of such payment are hereinafter referred to as
the “Closing Date.” 
 Payment for any Additional Securities shall be made to the Company in Federal or other funds
immediately available in New York City against delivery of such Additional Securities for the respective accounts of the several Underwriters on the date and time specified in the corresponding notice described in Section 2 or at such other
time on the same or on such other date, in any event not later than the second business day thereafter, as may be designated in writing by the Managers. 

The Firm Securities and the Additional Securities shall be in definitive form or global form, as specified by the Managers, and registered in
such names and in such denominations as the Managers shall request in writing not later than one full business day prior to the Closing Date or the applicable Option Closing Date, as the case may be. The Firm Securities and the Additional Securities
shall be delivered to the Managers on the Closing Date or an Option Closing Date, as the case may be, for the respective accounts of the several Underwriters, with any transfer taxes payable in connection with the transfer of the Securities to the
Underwriters duly paid, against payment of the Purchase Price therefor. 
 5. Conditions to the Underwriters’
Obligations. The several obligations of the Underwriters to purchase and pay for the Firm Securities on the Closing Date are subject to the following conditions: 

(a) Subsequent to the execution and delivery of this Agreement and prior to the Closing Date: 

  
 12 

 (i) there shall not have occurred any downgrading, nor shall any notice have
been given of any intended or potential downgrading or of any review for a possible change that does not indicate the direction of the possible change, in the rating accorded any of the securities of the Company or any of its subsidiaries by any
“nationally recognized statistical rating organization,” as such term is defined in Section 3(a)(62) of the Exchange Act; and 

(ii) there shall not have occurred any change, or any development involving a prospective change, in the condition, financial
or otherwise, or in the earnings, business or operations of the Company and its subsidiaries, taken as a whole, from that set forth in the Time of Sale Prospectus that, in the Managers’ judgment, is material and adverse and that makes it, in
the Managers’ judgment, impracticable to market the Securities on the terms and in the manner contemplated in the Time of Sale Prospectus. 

(b) The Underwriters shall have received on the Closing Date a certificate, dated the Closing Date and signed by an executive
officer of the Company, to the effect set forth in Section 5(a)(i) above and to the effect that (i) the representations and warranties of the Company contained in this Agreement are true and correct as of the Closing Date with the same
effect as if made on such delivery date, and (ii) the Company has complied with all of the agreements and satisfied all of the conditions on its part to be performed or satisfied hereunder on or before the Closing Date. 

The officer signing and delivering such certificate may rely upon the best of his or her knowledge as to proceedings threatened. 

(c) The Underwriters shall have received on the Closing Date an opinion and negative assurance statement of Wilson Sonsini
Goodrich & Rosati, Professional Corporation, outside counsel for the Company, dated the Closing Date, to the effect set forth in Exhibit A. Such opinion shall be rendered to the Underwriters at the request of the Company and shall so state
therein. 
 (d) The Underwriters shall have received on the Closing Date an opinion and negative assurance statement of Davis
Polk & Wardwell LLP, counsel for the Underwriters, dated the Closing Date, in form and substance satisfactory to the Managers. 

(e) The Underwriters shall have received, on each of the date hereof and the Closing Date, a letter dated the date hereof or
the Closing Date, as the case may be, in form and substance satisfactory to the Underwriters, from Ernst & Young LLP, independent registered public accountants for the Company, containing statements and information of the type ordinarily
included in accountants’ “comfort letters” to underwriters with respect to the financial statements and certain financial information contained in or incorporated by reference into the Registration Statement, the Time of Sale
Prospectus and the Prospectus; provided that the letter delivered on the Closing Date shall use a “cut-off date” not earlier than the date hereof. 

  
 13 

 (f) The Underwriters shall have received, on each of the date hereof and the
Closing Date, a letter dated the date hereof or the Closing Date, as the case may be, in form and substance satisfactory to the Underwriters, from BDO USA, LLC, independent registered public accountants for Telecom Holding Parent LLC, containing
statements and information of the type ordinarily included in accountants’ “comfort letters” to underwriters with respect to the financial statements and certain financial information contained in or incorporated by reference into the
Registration Statement, the Time of Sale Prospectus and the Prospectus; provided that the letter delivered on the Closing Date shall use a “cut-off date” not earlier than the date hereof. 

(g) The Underwriters shall have received, on each of the date hereof and the Closing Date, a letter dated the date hereof or
the Closing Date, as the case may be, in form and substance satisfactory to the Underwriters, from PricewaterhouseCoopers, LLC, independent accountants for Telecom Holding Parent LLC, containing statements and information of the type ordinarily
included in accountants’ “comfort letters” to underwriters with respect to the financial statements and certain financial information contained in or incorporated by reference into the Registration Statement, the Time of Sale
Prospectus and the Prospectus. 
 (h) The Underwriters shall have received, on each of the date hereof and the Closing Date,
a certificate signed by the Chief Financial Officer of the Company, dated respectively as of the date hereof and as of the Closing Date, to the effect set forth in Exhibit C. 

(i) The “lock-up” agreements, each substantially in the form of
Exhibit B hereto, between the Managers and each of the officers and directors of the Company and the other parties named in Schedule III hereto relating to sales and certain other dispositions of shares of common stock or certain other
securities, delivered to the Managers on or before the date hereof, shall be in full force and effect on the Closing Date. 

(j) The Maximum Number of Underlying Securities have been approved for listing, subject to notice of issuance, on The NASDAQ
Global Select Market (the “NASDAQ”), and evidence thereof shall have been provided to the Managers. 

  
 14 

 (k) The several obligations of the Underwriters to purchase Additional
Securities hereunder are subject to the delivery to the Managers on the applicable Option Closing Date of the following: 
 (i) a
certificate, dated the Option Closing Date and signed by an executive officer of the Company, confirming that the certificate delivered on the Closing Date pursuant to Section 5(b) hereof remains true and correct as of such Option Closing Date;

 (ii) an opinion and negative assurance statement of Wilson Sonsini Goodrich & Rosati, Professional Corporation, outside counsel
for the Company, dated the Option Closing Date, relating to the Additional Securities to be purchased on such Option Closing Date and otherwise to the same effect as the opinion required by Section 5(c) hereof; 

(iii) an opinion and negative assurance statement of Davis Polk & Wardwell LLP, counsel for the Underwriters, dated the Option Closing
Date, relating to the Additional Securities to be purchased on such Option Closing Date and otherwise to the same effect as the opinion required by Section 5(d) hereof; 

(iv) a letter dated the Option Closing Date, in form and substance satisfactory to the Underwriters, from Ernst & Young LLP,
independent registered public accountants for the Company, substantially in the same form and substance as the letter furnished to the Underwriters pursuant to Section 5(e) hereof; provided that the letter delivered on the Option Closing
Date shall use a “cut-off date” not earlier than three business days prior to such Option Closing Date; 

(v) a letter dated the dated the Option Closing Date, in form and substance satisfactory to the Underwriters, from BDO USA, LLC, independent
registered public accountants for Telecom Holding Parent LLC, substantially in the same form and substance as the letter furnished to the Underwriters pursuant to Section 5(f) hereof; provided that the letter delivered on the Option
Closing Date shall use a “cut-off date” not earlier than three business days prior to such Option Closing Date; 

(vi) a letter dated the dated the Option Closing Date, in form and substance satisfactory to the Underwriters, from Pricewaterhouse Coopers,
LLC, independent accountants for Telecom Holding Parent LLC, substantially in the same form and substance as the letter furnished to the Underwriters pursuant to Section 5(g) hereof; 

(vii) a certificate, dated the Option Closing Date and signed by the Chief Financial Officer of the Company, substantially in the same form and
substance as the letter furnished to the Underwriters pursuant to Section 5(h) hereof; and 

  
 15 

 (ix) such other documents as you may reasonably request with respect to the good standing of
the Company, the due authorization and issuance of the Additional Securities to be sold on such Option Closing Date and other matters related to the issuance of such Additional Securities. 

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

(a) To furnish to the Managers, without charge, a signed copy of the Registration Statement (including exhibits thereto and
documents incorporated by reference therein) and to deliver to each of the Underwriters during the period mentioned in Section 6(e) or 6(f) below, as many copies of the Time of Sale Prospectus, the Prospectus, any documents incorporated by
reference therein and any supplements and amendments thereto or to the Registration Statement as the Managers may reasonably request. 

(b) Before amending or supplementing the Registration Statement, the Time of Sale Prospectus or the Prospectus, to furnish to
the Managers a copy of each such proposed amendment or supplement and not to file any such proposed amendment or supplement to which the Managers reasonably object, except as may be required to comply with its obligations under the Exchange Act or
other applicable law based on the advice of counsel. 
 (c) To furnish to the Managers a copy of each proposed free writing
prospectus to be prepared by or on behalf of, used by, or referred to by the Company and not to use or refer to any proposed free writing prospectus to which the Managers reasonably object. 

(d) Not to take any action that would result in an Underwriter or the Company being required to file with the Commission
pursuant to Rule 433(d) under the Securities Act a free writing prospectus prepared by or on behalf of such Underwriter that such Underwriter otherwise would not have been required to file thereunder. 

(e) If the Time of Sale Prospectus is being used to solicit offers to buy the Securities at a time when the Prospectus is not
yet available to prospective purchasers and any event shall occur or condition exist as a result of which it is necessary to amend or supplement the Time of Sale Prospectus in order to make the statements therein, in the light of the circumstances,
not misleading, or if any event shall occur or condition exist as a result of which the Time of Sale Prospectus conflicts with the information contained in the Registration Statement then on file, or if, in the opinion of counsel for the
Underwriters, it is necessary to amend or supplement the Time of Sale Prospectus to comply with applicable law, forthwith to prepare, file with the Commission and furnish, at its own expense, to the Underwriters and to any dealer upon request,
either amendments or supplements to the Time of Sale Prospectus so that the statements in the Time of 

  
 16 

 
Sale Prospectus as so amended or supplemented will not, in the light of the circumstances when the Time of Sale Prospectus is delivered to a prospective purchaser, be misleading or so that the
Time of Sale Prospectus, as amended or supplemented, will no longer conflict with the Registration Statement, or so that the Time of Sale Prospectus, as amended or supplemented, will comply with applicable law. 

(f) If, during such period after the first date of the public offering of the Securities as in the opinion of counsel for the
Underwriters the Prospectus (or in lieu thereof the notice referred to in Rule 173(a) of the Securities Act) is required by law to be delivered in connection with sales by an Underwriter or dealer and prior to the completion of the distribution of
the Securities, any event shall occur or condition exist as a result of which it is necessary to amend or supplement the Prospectus in order to make the statements therein, in the light of the circumstances when the Prospectus (or in lieu thereof
the notice referred to in Rule 173(a) of the Securities Act) is delivered to a purchaser, not misleading, or if, in the opinion of counsel for the Underwriters, it is necessary to amend or supplement the Prospectus to comply with applicable law,
forthwith to prepare, file with the Commission and furnish, at its own expense, to the Underwriters and to the dealers (whose names and addresses the Managers will furnish to the Company) to which Securities may have been sold by the Managers on
behalf of the Underwriters and to any other dealers upon request, either amendments or supplements to the Prospectus so that the statements in the Prospectus as so amended or supplemented will not, in the light of the circumstances when the
Prospectus (or in lieu thereof the notice referred to in Rule 173(a) of the Securities Act) is delivered to a purchaser, be misleading or so that the Prospectus, as amended or supplemented, will comply with applicable law. 

(g) To endeavor to qualify the Securities for offer and sale under the securities or Blue Sky laws of such jurisdictions within
the United States and Canada as the Representatives shall reasonably request; provided that in connection therewith the Company shall not be required to qualify as a foreign corporation or as a dealer in securities or to take any action that
would subject it to general service of process in any such jurisdiction where it is not presently qualified or where it would be subject to taxation in respect of doing business in any jurisdiction which it otherwise would not. 

(h) To make generally available to the Company’s security holders and to the Managers as soon as practicable an earning
statement covering a period of at least twelve months beginning with the first fiscal quarter of the Company occurring after the date of this Agreement which shall satisfy the provisions of Section 11(a) of the Securities Act and the rules and
regulations of the Commission thereunder, provided that the company may satisfy the requirements of this subsection (h) by electronically filing such reports or information through EDGAR. 

  
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 (i) Whether or not the transactions contemplated in this Agreement are
consummated or this Agreement is terminated, to pay or cause to be paid all expenses incident to the performance of its obligations under this Agreement, including: (i) the fees, disbursements and expenses of the Company’s counsel and the
Company’s accountants in connection with the registration and delivery of the Securities under the Securities Act and all other fees or expenses in connection with the preparation and filing of the Registration Statement, any preliminary
prospectus, the Time of Sale Prospectus, the Prospectus, any free writing prospectus prepared by or on behalf of, used by, or referred to by the Company and amendments and supplements to any of the foregoing, including the filing fees payable to the
Commission relating to the Securities (within the time required by Rule 456 (b)(1), if applicable), all printing costs associated therewith, and the mailing and delivering of copies thereof to the Underwriters and dealers, in the quantities
hereinabove specified, (ii) all costs and expenses related to the transfer and delivery of the Securities to the Underwriters, including any transfer or other taxes payable thereon, (iii) the cost of printing or producing any Blue Sky or
legal investment memorandum in connection with the offer and sale of the Securities under state securities laws and all expenses in connection with the qualification of the Securities for offer and sale under state securities laws as provided in
Section 6(g) hereof, including filing fees and the reasonable fees and disbursements of counsel for the Underwriters in connection with such qualification and in connection with the Blue Sky or legal investment memorandum, (iv) all filing
fees and the reasonable fees and disbursements of counsel to the Underwriters incurred in connection with the review and qualification of the offering of the Securities by the Financial Industry Regulatory Authority, (v) any fees charged by the
rating agencies for the rating of the Securities, (vi) all costs and expenses incident to listing the Maximum Number of Underlying Securities on the NASDAQ, (vii) the cost of the preparation, issuance and delivery of the Securities,
(viii) the costs and charges of any trustee, transfer agent, registrar or depositary, (ix) the costs and expenses of the Company relating to investor presentations on any “road show” undertaken in connection with the marketing of
the offering of the Securities, including, without limitation, expenses associated with the preparation or dissemination of any electronic road show, expenses associated with the production of road show slides and graphics, fees and expenses of any
consultants engaged in connection with the road show presentations with the prior approval of the Company, (x) the document production charges and expenses associated with printing this Agreement and (xi) all other costs and expenses
incident to the performance of the obligations of the Company hereunder for which provision is not otherwise made in this Section. It is understood, however, that except as provided in this Section, Section 8 and the last paragraph of
Section 10 below, the Underwriters will pay all of their costs and expenses, including fees and disbursements of their counsel, transfer taxes payable on resale of any of the Securities by them and any advertising expenses connected with any
offers they may make. 
 (j) Reserved. 

  
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 (k) To prepare a final term sheet relating to the offering of the
Securities, containing only information that describes the final terms of the Securities or the offering in a form consented to by the Managers, and to file such final term sheet within the period required by Rule 433(d)(5)(ii) under the Securities
Act following the date the final terms have been established for the offering of the Securities. 
 (l) The Company will
deliver to each Underwriter (or its agent), on the date of execution of this Agreement, a properly completed and executed Certification Regarding Beneficial Owners of Legal Entity Customers, together with copies of identifying documentation, and the
Company undertakes to provide such additional supporting documentation as each Underwriter may reasonably request in connection with the verification of the foregoing Certification. 

(m) To use its reasonable best efforts to have the Maximum Number of Underlying Securities approved for listing, subject only
to notice of issuance, on the NASDAQ on or prior to the Closing Date and to maintain the listing of the Maximum Number of Underlying Securities on the NASDAQ. 

(n) To reserve and keep available at all times, free of preemptive rights, the Maximum Number of Underlying Securities. 

(o) Between the date hereof and the later of (i) the Closing Date and (ii) the Option Closing Date, if any, the
Company will not do or authorize any act or thing that would, if it occurred after such Closing Date, result in an adjustment of the Conversion Rate (as such term is defined in the Indenture) for the Securities. 

The Company also agrees that, without the prior written consent of the Manager identified in Schedule I with the authorization to release this
lock-up on behalf of the Underwriters, it will not, during restricted period set forth in Schedule I hereto (the “Restricted Period”), (1) offer, pledge, sell, contract to sell, sell any
option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant to purchase, lend, or otherwise transfer or dispose of, directly or indirectly, any shares of Common Stock or any securities convertible into
or exercisable or exchangeable for Common Stock or (2) enter into any swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of the Common Stock, whether any such transaction
described in clause (1) or (2) above is to be settled by delivery of Common Stock or such other securities, in cash or otherwise or (3) file any registration statement with the Commission relating to the offering of any shares of Common
Stock or any securities convertible into or exercisable or exchangeable for Common Stock. The foregoing sentence shall not apply to (a) the sale of the Securities under this Agreement, (b) the issuance by the Company of the Underlying
Securities upon the conversion of the Securities, (c) the issuance by the Company of any shares of Common Stock upon the exercise of an option or warrant or the conversion of a security outstanding on the date hereof and described in the Time
of Sale Prospectus, (e) any shares of Common Stock issued by the Company pursuant to the Coriant Transaction as 

  
 19 

 
described in the Time of Sale Prospectus (e) any grants under the Company’s equity or stock plans in accordance with the terms of such plans as described in the Time of Sale Prospectus
or (f) the entry into, or the consummation of the transactions contemplated by, the Capped Call Confirmations. 
 7. Covenants of
the Underwriters. Each Underwriter severally covenants with the Company not to take any action that would result in the Company being required to file with the Commission under Rule 433(d) a free writing prospectus prepared by or on behalf of
such Underwriter that otherwise would not be required to be filed by the Company thereunder, but for the action of the Underwriter. 
 8.
Indemnity and Contribution. (a) The Company agrees to indemnify and hold harmless each Underwriter, each person, if any, who controls any Underwriter within the meaning of either Section 15 of the Securities Act or Section 20
of the Exchange Act and each affiliate of any Underwriter within the meaning of Rule 405 under the Securities Act from and against any and all losses, claims, damages and liabilities (including, without limitation, any legal or other expenses
reasonably incurred in connection with defending or investigating any such action or claim) caused by any untrue statement or alleged untrue statement of a material fact contained in the Registration Statement or any amendment thereof, any
preliminary prospectus, the Time of Sale Prospectus or any amendment or supplement thereto, any issuer free writing prospectus as defined in Rule 433(h) under the Securities Act, any Company information that the Company has filed, or is required to
file, pursuant to Rule 433(d) under the Securities Act, any “road show” as defined in Rule 433(h) under the Securities Act (a “road show”), or the Prospectus or any amendment or supplement thereto, or caused by any omission or
alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein not misleading, except insofar as such losses, claims, damages or liabilities are caused by any such untrue statement or
omission or alleged untrue statement or omission based upon information relating to any Underwriter furnished to the Company in writing by such Underwriter through the Managers expressly for use therein. 

(b) Each Underwriter agrees, severally and not jointly, to indemnify and hold harmless the Company, its directors, its officers
who sign the Registration Statement and each person, if any, who controls the Company within the meaning of either Section 15 of the Securities Act or Section 20 of the Exchange Act to the same extent as the foregoing indemnity from the
Company to such Underwriter, but only with reference to information relating to such Underwriter furnished to the Company in writing by such Underwriter through the Managers expressly for use in the Registration Statement, any preliminary
prospectus, the Time of Sale Prospectus, any issuer free writing prospectus, road show, or the Prospectus or any amendment or supplement thereto. 

(c) In case any proceeding (including any governmental investigation) shall be instituted involving any person in respect of
which indemnity may be sought pursuant to Section 8(a) or 8(b), such person (the “indemnified party”) shall promptly notify the person against whom such indemnity may be sought (the

  
 20 

 
“indemnifying party”) in writing and the indemnifying party, upon request of the indemnified party, shall retain counsel reasonably satisfactory to the indemnified party to
represent the indemnified party and any others the indemnifying party may designate in such proceeding and shall pay the fees and disbursements of such counsel related to such proceeding. In any such proceeding, any indemnified party shall have the
right to retain its own counsel, but the fees and expenses of such counsel shall be at the expense of such indemnified party unless (i) the indemnifying party and the indemnified party shall have mutually agreed to the retention of such counsel
or (ii) the named parties to any such proceeding (including any impleaded parties) include both the indemnifying party and the indemnified party and representation of both parties by the same counsel would be inappropriate due to actual or
potential differing interests between them. It is understood that the indemnifying party shall not, in respect of the legal expenses of any indemnified party in connection with any proceeding or related proceedings in the same jurisdiction, be
liable for the fees and expenses of more than one separate firm (in addition to any local counsel) for all such indemnified parties and that all such fees and expenses shall be reimbursed as they are incurred. Such firm shall be designated in
writing by the Manager authorized to appoint counsel under this Section set forth in Schedule I hereto, in the case of parties indemnified pursuant to Section 8(a), and by the Company, in the case of parties indemnified pursuant to
Section 8(b). The indemnifying party shall not be liable for any settlement of any proceeding effected without its written consent, but if settled with such consent or if there be a final judgment for the plaintiff, the indemnifying party
agrees to indemnify the indemnified party from and against any loss or liability by reason of such settlement or judgment. Notwithstanding the foregoing sentence, if at any time an indemnified party shall have requested an indemnifying party to
reimburse the indemnified party for fees and expenses of counsel as contemplated by the second and third sentences of this paragraph, the indemnifying party agrees that it shall be liable for any settlement of any proceeding effected without its
written consent if (i) such settlement is entered into more than 60 days after receipt by such indemnifying party of the aforesaid request and (ii) such indemnifying party shall not have reimbursed the indemnified party in accordance
with such request prior to the date of such settlement. No indemnifying party shall, without the prior written consent of the indemnified party, effect any settlement of any pending or threatened proceeding in respect of which any indemnified party
is or could have been a party and indemnity could have been sought hereunder by such indemnified party, unless such settlement includes an unconditional release of such indemnified party from all liability on claims that are the subject matter of
such proceeding. 
 (d) To the extent the indemnification provided for in Section 8(a) or 8(b) is unavailable to an
indemnified party or insufficient in respect of any losses, claims, damages or liabilities referred to therein, then each indemnifying party under such paragraph, in lieu of indemnifying such indemnified party thereunder, shall contribute to the
amount paid or payable by such indemnified party as a result of such losses, claims, damages or liabilities (i) in such proportion as is appropriate to reflect the relative benefits received by the Company on the one

  
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hand and the Underwriters on the other hand from the offering of the Securities or (ii) if the allocation provided by clause 8(d)(i) above is not permitted by applicable law, in such
proportion as is appropriate to reflect not only the relative benefits referred to in clause 8(d)(i) above but also the relative fault of the Company on the one hand and of the Underwriters on the other hand in connection with the statements or
omissions that resulted in such losses, claims, damages or liabilities, as well as any other relevant equitable considerations. The relative benefits received by the Company on the one hand and the Underwriters on the other hand in connection with
the offering of the Securities shall be deemed to be in the same respective proportions as the net proceeds from the offering of the Securities (before deducting expenses) received by the Company and the total underwriting discounts and commissions
received by the Underwriters bear to the aggregate initial public offering price of the Securities as set forth in the Prospectus. The relative fault of the Company on the one hand and the Underwriters on the other hand shall be determined by
reference to, among other things, whether 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 by the Underwriters and the
parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission. The Underwriters’ respective obligations to contribute pursuant to this Section 8 are several in proportion
to the respective principal amounts of Securities they have purchased hereunder, and not joint. 
 (e) The Company and the
Underwriters agree that it would not be just or equitable if contribution pursuant to this Section 8 were determined by pro rata allocation (even if the Underwriters were treated as one entity for such purpose) or by any other method of
allocation that does not take account of the equitable considerations referred to in Section 8(d). The amount paid or payable by an indemnified party as a result of the losses, claims, damages and liabilities referred to in Section 8(d)
shall be deemed to include, subject to the limitations set forth above, 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 Section 8, no Underwriter shall be required to contribute any amount in excess of the amount by which the total price at which the Securities underwritten by it and distributed to the public were offered to the public exceeds the amount
of any damages that such Underwriter has otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f)
of the Securities Act) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation. The remedies provided for in this Section 8 are not exclusive and shall not limit any rights or remedies which may
otherwise be available to any indemnified party at law or in equity. 

  
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 (f) The indemnity and contribution provisions contained in this
Section 8 and the representations, warranties and other statements of the Company contained in this Agreement shall remain operative and in full force and effect regardless of (i) any termination of this Agreement, (ii) any
investigation made by or on behalf of any Underwriter, any person controlling any Underwriter or any affiliate of any Underwriter or by or on behalf of the Company, its officers or directors or any person controlling the Company and
(iii) acceptance of and payment for any of the Securities. 
 9. Termination. The Underwriters may terminate this Agreement by
notice given by the Managers to the Company, if after the execution and delivery of this Agreement and prior to the Closing Date (i) trading generally shall have been suspended or materially limited on, or by, as the case may be, any of The New
York Stock Exchange and the NASDAQ, (ii) trading of any securities of the Company shall have been suspended on any exchange or in any over-the-counter market,
(iii) a material disruption in securities settlement, payment or clearance services in the United States shall have occurred, (iv) any moratorium on commercial banking activities shall have been declared by Federal or New York State
authorities or (v) there shall have occurred any outbreak or escalation of hostilities, or any change in financial markets or any calamity or crisis that, in the Managers’ judgment, is material and adverse and which, singly or together
with any other event specified in this clause (v), makes it, in the Managers’ judgment, impracticable or inadvisable to proceed with the offer, sale or delivery of the Securities on the terms and in the manner contemplated in the Time of
Sale Prospectus or the Prospectus. 
 10. Effectiveness; Defaulting Underwriters. This Agreement shall become effective upon the
execution and delivery hereof by the parties hereto. 
 If, on the Closing Date, or an Option Closing Date, as the case may be, any one or
more of the Underwriters shall fail or refuse to purchase Securities that it has or they have agreed to purchase hereunder on such date, and the aggregate principal amount of Securities which such defaulting Underwriter or Underwriters agreed but
failed or refused to purchase is not more than one-tenth of the aggregate principal amount of the Securities to be purchased on such date, the other Underwriters shall be obligated severally in the proportions
that the principal amount of Firm Securities set forth opposite their respective names in Schedule II bears to the aggregate principal amount of Firm Securities set forth opposite the names of all such
non-defaulting Underwriters, or in such other proportions as the Managers may specify, to purchase the Securities which such defaulting Underwriter or Underwriters agreed but failed or refused to purchase on
such date; provided that in no event shall the principal amount of Securities that any Underwriter has agreed to purchase pursuant to this Agreement be increased pursuant to this Section 10 by an amount in excess of one-ninth of such principal amount of Securities without the written consent of such Underwriter. If, on the Closing Date, any Underwriter or Underwriters shall fail or refuse to purchase Firm Securities and the
aggregate principal amount of Securities with respect to which such default occurs is more than one-tenth of the aggregate principal amount of Firm Securities to be purchased on such date, and arrangements
satisfactory to the Managers and the Company for the purchase of such Firm Securities are not made within 36 hours after such default, this Agreement shall terminate without liability on the part of any
non-defaulting Underwriter or the Company. In any such case either the Managers or the Company shall have the 

  
 23 

 
right to postpone the Closing Date, but in no event for longer than seven days, in order that the required changes, if any, in the Registration Statement, in the Time of Sale Prospectus, in the
Prospectus or in any other documents or arrangements may be effected. If, on an Option Closing Date, any Underwriter or Underwriters shall fail or refuse to purchase Additional Securities and the aggregate principal amount of Additional Securities
with respect to which such default occurs is more than one-tenth of the aggregate principal amount of Additional Securities to be purchased on such Option Closing Date, the
non-defaulting Underwriters shall have the option to (a) terminate their obligation hereunder to purchase the Additional Securities to be sold on such Option Closing Date or (b) purchase not less
than the principal amount of Additional Securities that such non-defaulting Underwriters would have been obligated to purchase in the absence of such default. Any action taken under this paragraph shall not
relieve any defaulting Underwriter from liability in respect of any default of such Underwriter under this Agreement. 
 If this Agreement
shall be terminated by the Underwriters, or any of them, because of any failure or refusal on the part of the Company to comply with the terms or to fulfill any of the conditions of this Agreement, or if for any reason the Company shall be unable to
perform its obligations under this Agreement the Company will reimburse the Underwriters or such Underwriters as have so terminated this Agreement with respect to themselves, severally, for all out-of-pocket expenses (including the fees and disbursements of their counsel) reasonably incurred by such Underwriters in connection with this Agreement or the offering contemplated hereunder. 

11. Entire Agreement. (a) This Agreement, together with any contemporaneous written agreements and any prior written agreements
(to the extent not superseded by this Agreement) that relate to the offering of the Securities, represents the entire agreement between the Company and the Underwriters with respect to the preparation of any preliminary prospectus, the Time of Sale
Prospectus, the Prospectus, the conduct of the offering, and the purchase and sale of the Securities. 
 (b) The Company
acknowledges that in connection with the offering of the Securities: (i) the Underwriters have acted at arm’s length, are not agents of, and owe no fiduciary duties to, the Company or any other person, (ii) the Underwriters owe the
Company only those duties and obligations set forth in this Agreement and prior written agreements (to the extent not superseded by this Agreement), if any, and (iii) the Underwriters may have interests that differ from those of the Company.
The Company waives to the full extent permitted by applicable law any claims it may have against the Underwriters arising from an alleged breach of fiduciary duty in connection with the offering of the Securities. 

12. Counterparts. This Agreement may be signed in two or more counterparts, each of which shall be an original, with the same effect as
if the signatures thereto and hereto were upon the same instrument. 
 13. Applicable Law. This Agreement shall be governed by and
construed in accordance with the internal laws of the State of New York. 

  
 24 

 14. Headings. The headings of the sections of this Agreement have been inserted for
convenience of reference only and shall not be deemed a part of this Agreement. 
 15. Notices. All communications hereunder shall be
in writing and effective only upon receipt and if to the Underwriters shall be delivered, mailed or sent to the Managers at the address set forth in Schedule I hereto; and if to the Company shall be delivered, mailed or sent to the address set
forth in Schedule I hereto. 
 16. Patriot Act Compliance. In accordance with the requirements of the USA Patriot Act, the
Underwriters are required to obtain, verify and record information that identifies their respective clients, including the Company, which information may include the name and address of their respective clients, as well as other information that
will allow the Underwriters to properly identify their respective clients. 
  

  
 25 

 
			
	Very truly yours,
	
	INFINERA CORPORATION
		
	By:	 	 /s/ Brad D. Feller

		 	Name: Brad D. Feller
		 	Title: Chief Financial Officer

			
	Accepted as of the date hereof
	
	MORGAN STANLEY & CO. LLC
	
	Acting severally on behalf of itself and the several     Underwriters named in Schedule II hereto
		
	By:	 	Morgan Stanley & Co. LLC
		
	By:	 	 /s/ David Oakes

		 	Name: David Oakes
		 	Title: Managing Director

 SCHEDULE I 
  

			
	Managers:	  	Morgan Stanley & Co. LLC
		
	 Manager authorized to release lock-up under
Section 6:
	  	Morgan Stanley & Co. LLC
		
	 Manager authorized to appoint counsel under Section 8(c):
	  	Morgan Stanley & Co. LLC
		
	Registration Statement File No.:	  	333-227199
		
	Time of Sale Prospectus:	  	 1.  Prospectus dated September 5, 2018 relating to the Shelf Securities and filed
by the Company with the Commission
  

2.  The preliminary prospectus supplement dated September 5, 2018 relating to the Securities and
filed by the Company with the Commission
  

3.  The pricing term sheet dated September 6, 2018 and filed by the Company with the
Commission

	Other Free Writing Prospectuses:	  	  
 1.  Issuer Free
Writing Prospectus dated September 5, 2018 containing the launch press release
  

2.  Issuer Free Writing Prospectus dated September 7, 2018 containing the pricing press
release

		
	Lock-up Restricted Period:	  	The period ending 60 days after the date of the final prospectus supplement relating to the Securities
		
	Securities to be purchased:	  	2.125% Convertible Senior Notes due 2024
		
	Aggregate principal amount of Firm Securities:	  	$350,000,00 of Firm Securities
		
	Aggregate principal amount of Additional Securities:	  	$52,500,000 of Additional Securities
		
	Purchase Price:	  	97.25% of the aggregate principal amount of the Securities, plus accrued interest, if any, from September 11, 2018

  
 I-1 

			
		
	Maturity:	  	September 1, 2024
		
	Interest Rate:	  	2.125% per annum, accruing from September 11, 2018
		
	Interest Payment Dates:	  	March 1 and September 1 commencing March 1, 2019
		
	Closing Date and Time:	  	September 11, 2018 9:00 a.m. Eastern time
		
	Closing Location:	  	 Davis Polk & Wardwell LLP
 450
Lexington Avenue
 New York, New York 10017

		
	Address for Notices to Underwriters:	  	 Morgan Stanley & Co. LLC
 1585
Broadway
 New York, New York 10036
 Attention: Convertible Debt
Syndicate
 Desk, with a copy to the Legal Department

		
	Address for Notices to the Company:	  	 Infinera Corporation
 140 Caspian Court

Sunnyvale, California 94089
 Attention: Legal
Department

  

  
 I-2 

 SCHEDULE II 
  

					
	 Underwriter
	  	Principal
Amount of
Firm Securities
To Be
Purchased	 
	 Morgan Stanley & Co. LLC
	  	$	350,000,000	 
		  	  
	  
	 
	 Total
	  	$	350,000,000	 
		  	  
	  
	 

  
 II-1 

 SCHEDULE III 

Signatories to Lock-Up Agreements 

Thomas J. Fallon 
 Brad D. Feller 

David F. Welch, Ph.D. 
 David W. Heard 

Robert J. Jandro 
 James L. Laufman 

John P. Daane 
 Marcel Gani 

Kambiz Y. Hooshmand 
 Paul J. Milbury 

Rajal M. Patel 
 Mark A. Wegleitner 

Oaktree Optical Holdings, L.P. 

  
 III-1 

 EXHIBIT A 

FORM OF OPINION OF WILSON SONSINI GOODRICH & ROSATI, 

PROFESSIONAL CORPORATION 

1. The Company is a corporation duly incorporated and validly existing under the laws of the State of Delaware, and is in good standing under
such laws. The Company has requisite corporate power and authority to own or lease, as the case may be, and to operate its properties and conduct its business as described in the Pricing Disclosure Package and Prospectus. The Company has been duly
qualified as a foreign corporation for the transaction of business and is in good standing under the laws of the State of California. 
 2.
The Company has the corporate power to authorize, issue and sell the Firm Securities as contemplated by the Underwriting Agreement. 
 3.
The Underwriting Agreement has been duly authorized, executed and delivered by the Company. 
 4. The Indenture has been duly authorized by
all necessary corporate action on the part of the Company and the Indenture has been duly executed and delivered by the Company and, assuming the due authorization, execution and delivery thereof by the Trustee, the Indenture constitutes a valid and
binding instrument, enforceable against the Company in accordance with its terms; and the Indenture has been duly qualified under the Trust Indenture Act of 1939, as amended. 

5. The Firm Securities have been duly authorized by all necessary corporate action of the Company and, when executed by the Company and
authenticated by the Trustee in accordance with the terms of the Indenture (which authentication we have not determined by inspection of the Securities) and issued and delivered to the Underwriter against payment of the purchase price therefor
specified in the Underwriting Agreement, the Firm Securities will constitute valid and binding obligations of the Company, enforceable against the Company in accordance with their terms; and the Firm Securities are entitled to the benefits of the
Indenture. 
 6. The shares of Common Stock initially issuable upon conversion of the Firm Securities (assuming full physical settlement of
the Firm Securities and including shares of Common Stock issuable with respect to any Make-Whole Fundamental Change (as defined in the Indenture) (the “Shares”) have been duly authorized and reserved for issuance upon conversion of
the Firm Securities by all necessary corporate action on the part of the Company and the Shares, if any, when issued upon due conversion of the Firm Securities in accordance with the terms of the Firm Securities and the Indenture will be validly
issued, fully paid and nonassessable and free of preemptive rights arising under the Certificate of Incorporation or Bylaws, the federal laws of the United States of America or the Delaware General Corporation Law and will conform in all material
respects to the description thereof contained in the Pricing Disclosure Package and Prospectus under the caption “Description of Capital Stock.” 

  
 Exh. A-1 

 7. The execution and delivery by the Company of the Operative Documents, the performance by
the Company of its obligations under the Operative Documents, and the issuance and sale of the Firm Securities and the issuance of the Shares or the consummation of any other of the transactions contemplated thereby do not violate or, with respect
to clause (C) of this paragraph, constitute a default under, (A) any provision of the Certificate of Incorporation or Bylaws of the Company; (B) any provision of any federal or state law, rule or regulation known to us to be
customarily applicable to transactions of the nature contemplated by the Underwriting Agreement; (C) any Reviewed Agreement; or (D) to our knowledge, any Reviewed Judgment. 

8. No consent, approval, authorization of, or designation, declaration or filing with, any governmental authority on the part of the Company
is required for the valid execution and delivery of the Operative Documents or the consummation of the transactions contemplated thereby, or the offer, sale or issuance of the Firm Securities or the issuance of the Shares, except such as have been
obtained or made under the Securities Act and the Securities Exchange Act of 1934, as amended (the “Exchange Act”). 
 9.
The information in the Pricing Disclosure Package and Prospectus under the caption “Description of Notes” insofar as such information purports to constitute a summary of the terms of the Securities and the Indenture, fairly and accurately
summarizes the matters referred to therein in all material respects. 
 10. The information in the Pricing Disclosure Package and Prospectus
under the caption “Description of Capital Stock”, insofar as such information purports to constitute a summary of the terms of the Common Stock, and under the caption “Underwriter”, insofar as such information purports to
describe the provisions of the federal laws of the United States and the documents referred to therein, fairly and accurately summarizes the matters referred to therein in all material respects. 

11. The information in the Pricing Disclosure Package and Prospectus under the caption “Material U.S. Federal Income Tax
Considerations”, insofar as such information purports to constitute a summary of the United States federal tax laws and legal conclusions referred to therein, fairly and accurately summarizes the matters referred to therein in all material
respects. 
 12. The Company is not and, immediately after giving effect to the offering and sale of the Securities to be sold by the
Company and the application of the net proceeds thereof as described in the Pricing Disclosure Package and Prospectus, will not be required to register as an “investment company” as such term is defined in the Investment Company Act of
1940. 

  
 Exh. A-2 

 EXHIBIT B 

[FORM OF LOCK-UP LETTER] 

September __, 2018 
 Morgan
Stanley & Co. LLC 
 As Manager of the several 

Underwriters named 
 in Schedule
II to the Underwriting Agreement 
 referred to below 

c/o Morgan Stanley & Co. LLC 
 1585
Broadway 
 New York, New York 10036 
 Ladies
and Gentlemen: 
 The undersigned understands that Morgan Stanley & Co. LLC (the “Manager”) proposes to enter into
an Underwriting Agreement (the “Underwriting Agreement”) with Infinera Corporation, a Delaware corporation (the “Company”), providing for the public offering (the “Public Offering”) by the several
Underwriters, including the Manager (the “Underwriters”), of its Convertible Senior Notes due 2024 (the “Securities”). The Securities will be convertible into cash, shares of common stock of the Company, par value
$0.001 per share (the “Common Stock”), or a combination of cash and Common Stock, at the Company’s election. 
 To
induce the Underwriters that may participate in the Public Offering to continue their efforts in connection with the Public Offering, the undersigned hereby agrees that, without the prior written consent of the Manager on behalf of the Underwriters,
it will not, during the period commencing on the date hereof and ending 60 days after the date of the final prospectus (the “Restricted Period”) relating to the Public Offering (the “Final Prospectus”),
(1) offer, pledge, sell, contract to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant to purchase, lend, or otherwise transfer or dispose of, directly or indirectly, any
shares of Common Stock beneficially owned (as such term is used in Rule 13d-3 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”)), by the undersigned or any other
securities so owned convertible into or exercisable or exchangeable for Common Stock or (2) enter into any swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of the Common
Stock, whether any such transaction described in clause (1) or (2) above is to be settled by delivery of Common Stock or such other securities, in cash or otherwise. The foregoing sentence shall not apply to (a) transfers of shares of
Common Stock or any security convertible into Common Stock as a bona fide gift, (b) to the extent applicable, distributions of shares of Common Stock or any security convertible into Common Stock to limited partners or stockholders of the
undersigned, (c) transfers of shares of Common 

  
 Exh. B-1 

 
Stock or any security convertible into Common Stock to any trust, partnership or limited liability company for the direct or indirect benefit of the undersigned or the immediate family of the
undersigned, (d) transfers of shares of Common Stock or any security convertible into Common Stock to a wholly owned subsidiary of the undersigned or to the direct or indirect members or partners of the undersigned, (e) transfers of shares
of Common Stock or any security convertible into Common Stock by will or intestate, (f) transfers of shares of Common Stock or any security convertible into Common Stock to a nominee or custodian of a person or entity to whom a transfer would
be permissible under clauses (a) through (e); provided that in the case of any transfer or distribution pursuant to clauses (a) through (f) (i) each donee or distributee shall sign and deliver a
lock-up letter substantially in the form of this letter and (ii) no filing under Section 16(a) of the Exchange Act, reporting a reduction in beneficial ownership of shares of Common Stock, shall be
required or shall be voluntarily made during the Restricted Period, (g) in connection with the surrender or forfeiture of shares to the Company solely to satisfy tax withholding obligations upon exercise or vesting of stock options or awards;
provided that no filing under Section 16(a) of the Exchange Act shall be voluntarily made and any filing under Section 16(a) of the Exchange Act required to made during the Restricted Period in connection with any such transfers or
dispositions shall indicate by footnote disclosure or otherwise the nature of the transfer or disposition, (h) the establishment of a trading plan pursuant to Rule 10b5-1 under the Exchange Act for the
transfer of shares of Common Stock, provided that (A) such plan does not provide for the transfer of Common Stock during the Restricted Period and (B) to the extent a public announcement or filing under the Exchange Act, if any, is
required of or voluntarily made by or on behalf of the undersigned or the Company regarding the establishment of such plan, such announcement or filing shall include a statement to the effect that no transfer of Common Stock may be made under such
plan during the Restricted Period or (i) sales of shares of Common Stock pursuant to a trading plan established pursuant to Rule 10b5-1 under the Exchange Act, provided that such trading plan was
established prior to the date hereof and made available to the Manager or its counsel. In addition, the undersigned agrees that, without the prior written consent of the Manager on behalf of the Underwriters, it will not, during the Restricted
Period, make any demand for or exercise any right with respect to, the registration of any shares of Common Stock or any security convertible into or exercisable or exchangeable for Common Stock. The undersigned also agrees and consents to the entry
of stop transfer instructions with the Company’s transfer agent and registrar against the transfer of the undersigned’s shares of Common Stock except in compliance with the foregoing restrictions. 

It is understood that the undersigned will be released from its obligations under this
“lock-up” agreement if the Company notifies the undersigned that it does not intend to proceed with the Public Offering, if the Underwriting Agreement (other than the provisions thereof that survive
termination) shall terminate or be terminated prior to payment for and delivery of the Securities or if the Offering shall not have occurred by October 31, 2018. 

The undersigned understands that the Company and the Underwriters are relying upon this agreement in proceeding toward consummation of the
Public Offering. The undersigned further understands that this agreement is irrevocable and shall be binding upon the undersigned’s heirs, legal representatives, successors and assigns. 

  
 Exh. B-2 

 Whether or not the Public Offering actually occurs depends on a number of factors, including
market conditions. Any Public Offering will only be made pursuant to the Underwriting Agreement, the terms of which are subject to negotiation between the Company and the Underwriters. 

 

	
	 Very truly yours,

	
	  

(Name)

	
	  

(Address)

  
 Exh. B-3 

 EXHIBIT C 

FORM OF CFO CERTIFICATE 

INFINERA CORPORATION 

CERTIFICATE OF THE CHIEF FINANCIAL OFFICER 

September [•], 2018 

Reference is hereby made to the Underwriting Agreement, dated September [•], 2018 (the “Underwriting Agreement”), among
Infinera Corporation (the “Company”) and Morgan Stanley & Co. LLC as manager of the several underwriters named on Schedule II thereto (the “Underwriters”). Capitalized terms used but not defined in this
certificate have the meaning assigned to them in the Underwriting Agreement. 
 I am responsible for the financial accounting matters of the
Company and am familiar with the accounting books and records and internal controls of the Company. To assist the Underwriters in conducting and documenting their investigation of the affairs of the Company, I, Brad Feller, in my capacity as Chief
Financial Officer of the Company, do hereby certify pursuant to Section 5(h) of the Underwriting Agreement that after reasonable inquiry and investigation by myself or members of my staff who are responsible for the Company’s financial and
accounting matters: 
 The items marked with an “A” on the pages of the Prospectus attached as Exhibit A hereto (a) are
prepared on a basis substantially consistent with the latest audited financial statements of the Company included or incorporated by reference in the Prospectus, (b) are derived from the accounting books and records of the Company,
(c) fairly present, in all material respects, an accurate range of the financial performance or position of the Company as of and for the fiscal quarter ended June 30, 2018, and (d) are prepared in conformity with generally accepted
accounting principles where applicable. In addition, nothing has come to my attention that would cause me to believe that the actual financial results of the Company as of and for the fiscal quarter ended June 30, 2018, once finalized, will
differ in any material respect from such information. 

  
 Exh. C-1EX-10.2

 Exhibit 10.2 

[Dealer Address] 
  

			
	To:	  	 Infinera Corporation
 140 Caspian Court

Sunnyvale, CA 94089

		
	From:	  	[Dealer]
		
	Re:	  	Base Capped Call Transaction
		
	Date:	  	September [6], 2018

 Dear Ladies and Gentlemen: 

The purpose of this communication (this “Confirmation”) is to set forth the terms and conditions of the above-referenced
transaction entered into on the Trade Date specified below (the “Transaction”) between [Dealer] (“Dealer”) and Infinera Corporation, a Delaware corporation (“Counterparty”). This
communication constitutes a “Confirmation” as referred to in the ISDA Master Agreement specified below. 
 1. This Confirmation is
subject to, and incorporates, the definitions and provisions of the 2006 ISDA Definitions (the “2006 Definitions”) and the definitions and provisions of the 2002 ISDA Equity Derivatives Definitions (the “Equity
Definitions”, and together with the 2006 Definitions, the “Definitions”), in each case as published by the International Swaps and Derivatives Association, Inc. (“ISDA”). In the event of any inconsistency
between the 2006 Definitions and the Equity Definitions, the Equity Definitions will govern and in the event of any inconsistency between terms defined in the Equity Definitions and this Confirmation, this Confirmation shall govern. 

This Confirmation evidences a complete and binding agreement between Dealer and Counterparty as to the terms of the Transaction to which this
Confirmation relates. This Confirmation shall be subject to an agreement (the “Agreement”) in the form of the 2002 ISDA Master Agreement as if Dealer and Counterparty had executed an agreement in such form on the Trade Date (but
without any Schedule except for (i) the election of the laws of the State of New York as the governing law (without reference to choice of law doctrine), and (ii) the election that the “Cross Default” provisions of
Section 5(a)(vi) of the Agreement shall apply to Dealer, (a) with a Threshold Amount” of 3% of the shareholders’ equity of Dealer on the Trade Date, (b) “Specified Indebtedness” having the meaning set forth in
Section 14 of the Agreement, except that it shall not include any obligation in respect of deposits received in the ordinary course of Dealer’s banking business, (c) the phrase “, or becoming capable at such time of being
declared,” shall be deleted from clause (1) of such Section 5(a)(vi) of the Agreement, and (d) the following sentence shall be added to the end of Section 5(a)(vi) of the Agreement: “Notwithstanding the foregoing, a
default under subsection (2) hereof shall not constitute an Event of Default if (i) the default was caused solely by error or omission of an administrative or operational nature; (ii) funds were available to enable the relevant party
to make payment when due; and (iii) the payment is made within two Local Business Days of such party’s receipt of written notice of its failure to pay.”). 

All provisions contained in, or incorporated by reference to, the Agreement will govern this Confirmation except as expressly modified herein.
In the event of any inconsistency between this Confirmation and either the Definitions or the Agreement, this Confirmation shall govern. 

The Transaction hereunder shall be the sole Transaction under the Agreement. If there exists any ISDA Master Agreement between Dealer and
Counterparty or any confirmation or other agreement between Dealer and Counterparty pursuant to which an ISDA Master Agreement is deemed to exist between Dealer and Counterparty, then notwithstanding anything to the contrary in such ISDA Master
Agreement, such confirmation or agreement or any other agreement to which Dealer and Counterparty are parties, the Transaction shall not be considered a Transaction under, or otherwise governed by, such existing or deemed ISDA Master Agreement. 

  
 1 

 2. The Transaction constitutes a Share Option Transaction for purposes of the Equity
Definitions. The terms of the particular Transaction to which this Confirmation relates are as follows: 
 General Terms: 

 

			
		
	 Trade Date:
	  	September [6], 2018
		
	 Effective Date:
	  	September [11], 2018, or such other date as agreed by the parties in writing.
		
	 Components:
	  	The Transaction will be divided into individual Components, each with the terms set forth in this Confirmation, and, in particular, with the Number of Options and Expiration Date set forth in Annex A to this Confirmation. The
exercise, valuation and settlement of the Transaction will be effected separately for each Component as if each Component were a separate Transaction under the Agreement.
		
	 Option Style:
	  	“European”, as described under “Procedures for Exercise” below.
		
	 Option Type:
	  	Call
		
	 Seller:
	  	Dealer
		
	 Buyer:
	  	Counterparty
		
	 Shares:
	  	Common Stock of Counterparty, par value USD$0.001 (Ticker Symbol: “INFN”).
		
	 Number of Options:
	  	For each Component, as provided in Annex A to this Confirmation.
		
	 Option Entitlement:
	  	One Share Per Option
		
	 Strike Price:
	  	USD [     ]
		
	 Cap Price:
	  	USD [     ]; provided that in no event shall the Cap Price be reduced to an amount less than the Strike Price in connection with any adjustment by the Calculation Agent under this Confirmation.
		
	 Number of Shares:
	  	As of any date, a number of Shares equal to the product of (i) the Number of Options and (ii) the Option Entitlement.
		
	 Premium:
	  	USD [     ] (Premium per Option approximately USD [     ]); Dealer and Counterparty hereby agree that notwithstanding anything to the contrary herein or in the Agreement, following the payment
of the Premium, in the event that (a) an Early Termination Date (whether as a result of an Event of Default or a Termination Event) (other than an Event of Default arising under Section 5(a)(ii) or 5(a)(iv) of the Agreement that is within
the Counterparty’s control) occurs or is designated with respect to any Transaction and, as a result, Counterparty owes to Dealer the amount calculated under Section 6(d) and Section 6(e) or otherwise under the Agreement (calculated
as if the Transactions terminated on such Early Termination Date were the sole Transactions under the Agreement) or (b) Counterparty owes to Dealer, pursuant to Sections 12.2, 12.3, 12.6, 12.7, 12.8 or 12.9 of the Equity Definitions or
otherwise under the Equity Definitions, an amount calculated under Section 12.8 of the Equity Definitions, such amount shall be deemed to be zero.

  
 2 

			
		
	 Premium Payment Date:
	  	The Effective Date
		
	 Exchange:
	  	The NASDAQ Global Select Market
		
	 Related Exchange:
	  	All Exchanges; provided that Section 1.26 of the Equity Definitions shall be amended to add the words “United States” before the word “exchange” in the tenth line of such Section.
		
	Procedures for Exercise:	  	
		
	 Expiration Time:
	  	The Valuation Time
		
	 Expiration Date:
	  	For any Component, as provided in Annex A to this Confirmation (or, if such date is not a Scheduled Valid Day, the next following Scheduled Valid Day that is not already an Expiration Date for another Component);
provided that if that date is a Disrupted Day, the Expiration Date for such Component shall be the first succeeding Scheduled Valid Day that is not a Disrupted Day and is not or is not deemed to be an Expiration Date in respect of any other
Component of the Transaction hereunder; and provided further that in no event shall the Expiration Date be postponed to a date later than the Final Termination Date and, notwithstanding anything to the contrary in this Confirmation or the
Equity Definitions, if the Expiration Date is a Disrupted Day, the Relevant Price for such Expiration Date shall be the prevailing market value per Share determined by the Calculation Agent in a good faith and commercially reasonable manner.
Notwithstanding the foregoing and anything to the contrary in the Equity Definitions, if a Market Disruption Event occurs on any Expiration Date, the Calculation Agent may determine in a good faith and commercially reasonable manner that such
Expiration Date is a Disrupted Day only in part, in which case the Calculation Agent shall make commercially reasonable adjustments to the Number of Options for the relevant Component for which such day shall be the Expiration Date, shall designate
the Scheduled Valid Day determined in the manner described in the immediately preceding sentence as the Expiration Date for the remaining Options for such Component and may determine the Relevant Price based on transactions in the Shares on such
Disrupted Day taking into account the nature and duration of such Market Disruption Event on such day. Any Scheduled Valid Day on which, as of the date hereof, the Exchange is scheduled to close prior to its normal close of trading shall be deemed
not to be a Scheduled Valid Day; if a closure of the Exchange prior to its normal close of trading on any Scheduled Valid Day is scheduled following the date hereof, then such Scheduled Valid Day shall be deemed to be a Disrupted Day in full.
Section 6.6 of the Equity Definitions shall not apply to any Valuation Date occurring on an Expiration Date.
		
	 Final Termination Date:
	  	December 20, 2024.

  
 3 

			
		
	 Automatic Exercise:
	  	 Applicable; and means that the Number of Options for the relevant Component will be deemed to be automatically exercised at the Expiration
Time on the Expiration Date for such Component if at such time such Component is In-the-Money, unless Buyer notifies Seller (in writing) prior to the Expiration Time on
such Expiration Date that it does not wish Automatic Exercise to occur with respect to such Component, in which case Automatic Exercise will not apply with respect to such Component. “In-the-Money” means, in respect of any Component, that the Relevant Price on the Expiration Date for such Component is greater than the Strike Price for such Component.

Notwithstanding the foregoing, in no event shall the number of Options that are exercised or deemed exercised hereunder exceed the Number of
Options.

		
	 Valuation Time:
	  	At the close of trading of the regular trading session on the Exchange; provided that if the principal trading session is extended, the Calculation Agent shall determine the Valuation Time in a good faith and commercially
reasonable manner.
		
	 Valuation Date:
	  	For any Component, the Expiration Date therefor.
		
	 Market Disruption Event:
	  	 Section 6.3(a) of the Equity Definitions is hereby amended by deleting the words “during the one hour period that ends at the
relevant Valuation Time, Latest Exercise Time, Knock-in Valuation Time or Knock-out Valuation Time, as the case may be,” in clause (ii) thereof.

Section 6.3(d) of the Equity Definitions is hereby amended by deleting the remainder of the provision following the term “Scheduled Closing
Time” in the fourth line thereof.

		
	Settlement Terms:	  	
		
	 Settlement Method Election:
	  	 Applicable; provided that (a) Section 7.1 of the Equity Definitions is hereby amended by replacing the term “Physical
Settlement” with the term “Net Share Settlement”, (b) Counterparty must make a single irrevocable election for all Components and (c) if Counterparty is electing Cash Settlement, such Settlement Method Election would be
effective only if Counterparty represents and warrants to Dealer in writing on the date of such Settlement Method Election that (i) Counterparty is not in possession of any material non-public information
regarding Counterparty or the Shares, and (ii) such election is being made in good faith and not as part of a plan or scheme to evade compliance with the federal securities laws.

 
 Without limiting the generality of the foregoing, Counterparty acknowledges its
responsibilities under applicable securities laws, and in particular Sections 9 and 10(b) of the Exchange Act of 1934, as amended (the “Exchange Act”) and the rules and regulations promulgated thereunder in respect of such
election.

		
	 Electing Party:
	  	Counterparty
		
	 Settlement Method Election Date:
	  	The second Scheduled Valid Day prior to the scheduled Expiration Date for the Component with the earliest scheduled Expiration Date.
		
	 Default Settlement Method:
	  	Net Share Settlement

  
 4 

			
		
	 Net Share Settlement:
	  	 With respect to any Component, if Net Share Settlement is applicable to the Options exercised or deemed exercised hereunder, Dealer will
deliver to Counterparty, on the relevant Settlement Date for such Component, a number of Shares (the “Net Share Settlement Amount”) equal to (i) the Daily Option Value on the Expiration Date of such Component divided by
(ii) the Relevant Price on such Expiration Date.
  
 Dealer will deliver cash in
lieu of any fractional Shares to be delivered with respect to any Net Share Settlement Share Amount valued at the Relevant Price for the Expiration Date of such Component.

		
	 Cash Settlement:
	  	With respect to any Component, if Cash Settlement is applicable to the Options exercised or deemed exercised hereunder, in lieu of Section 8.1 of the Equity Definitions, Dealer will pay to Counterparty, on the relevant
Settlement Date for each such Option, an amount of cash (the “Cash Settlement Amount”) equal to the Daily Option Value on the Expiration Date of such Component.
		
	 Delivery Obligation:
	  	For any Settlement Date, the Net Share Settlement Amount or the Cash Settlement Amount payable or deliverable on such Settlement Date.
		
	 Daily Option Value:
	  	For any Component, an amount equal to (i) the Number of Options in such Component, multiplied by (ii) (A) the lesser of the Relevant Price on the Expiration Date of such Component and the Cap Price, minus
(B) the Strike Price on such Expiration Date; provided that if the calculation contained in clause (ii) above results in a negative number, the Daily Option Value for such Component shall be deemed to be zero. In no event will
the Daily Option Value be less than zero.
		
	 Valid Day:
	  	A day on which (i) there is no Market Disruption Event and (ii) trading in the Shares generally occurs on the Exchange. If the Shares are not listed, quoted or traded on any U.S. securities exchange or any other market,
“Valid Day” means a Business Day.
		
	 Scheduled Valid Day:
	  	A day that is scheduled to be a Valid Day on the Exchange. If the Shares are not listed, quoted or traded on any U.S. securities exchange or any other market, “Scheduled Valid Day” means a Business Day.
		
	 Business Day:
	  	Any day other than a Saturday, a Sunday or other day on which banking institutions are authorized or required by law, regulation or executive order to close or be closed in the State of New York.
		
	 Relevant Price:
	  	On any Valid Day, the per Share volume-weighted average price as displayed under the heading “Bloomberg VWAP” on Bloomberg page “INFN <equity> AQR” (or its equivalent successor if such page is not
available) (the “VWAP”) in respect of the period from the scheduled open of trading until the scheduled close of trading of the primary trading session on such Valid Day (or if such volume-weighted average price is unavailable at
such time, the market value of one Share on such Valid Day, as determined by the Calculation Agent in a good faith and commercially reasonable manner using, if practicable, a volume-weighted average method substantially similar to the method for
determining the VWAP). The Relevant Price will be determined without regard to after-hours trading or any other trading outside of the regular trading session trading hours.
		
	 Settlement Date:
	  	For all Components of the Transaction, the date one Settlement Cycle immediately following the Expiration Date for the Component with the latest scheduled Expiration Date.

  
 5 

			
		
	 Settlement Currency:
	  	USD
		
	 Other Applicable Provisions:
	  	The provisions of Sections 9.1(c), 9.8, 9.9 and 9.11 of the Equity Definitions will be applicable, except that all references in such provisions to “Physically-settled” shall be read as references to “Net Share
Settlement.”
		
	 Representation and Agreement:
	  	Notwithstanding anything to the contrary in the Equity Definitions (including, but not limited to, Section 9.11 thereof), the parties acknowledge that (i) any Shares delivered to Counterparty shall be, upon delivery,
subject to restrictions, obligations and limitations arising from Counterparty’s status as issuer of the Shares under applicable securities laws, (ii) Dealer may deliver any Shares required to be delivered hereunder in certificated form in
lieu of delivery through the Clearance System and (iii) any Shares delivered to Counterparty may be “restricted securities” (as defined in Rule 144 under the Securities Act of 1933, as amended (the “Securities
Act”)).
		
	Adjustments:	  	
		
	 Method of Adjustment:
	  	Calculation Agent Adjustment; provided that the parties agree that (x) open market Share repurchases at prevailing market price and (y) Share repurchases through a dealer pursuant to accelerated share
repurchases, forward contracts or similar transactions (including, without limitation, any discount to average VWAP prices) that are entered into at prevailing market prices and in accordance with customary market terms for transactions of such type
to repurchase the Shares shall not be considered Potential Adjustment Events; provided, further, that, the entry into any such open market Share repurchase, accelerated share repurchase transaction, forward contract or similar transaction
described in the immediately preceding proviso shall constitute a Potential Adjustment Event to the extent that, after giving effect to such transactions, the aggregate number of Shares repurchased during the term of the Transaction pursuant to all
such transactions described in the immediately preceding proviso would exceed 20% of the number of Shares outstanding as of the Trade Date, as determined by Calculation Agent in a commercially reasonable manner.
		
	Extraordinary Events:	  	
		
	 New Shares:
	  	In the definition of New Shares in Section 12.1(i) of the Equity Definitions, the text in clause (i) thereof shall be deleted in its entirety and replaced with “publicly quoted, traded or listed on any of The New York
Stock Exchange, The NASDAQ Global Market or The NASDAQ Global Select Market (or their respective successors) and of an entity or person organized under the laws of the United States, any State thereof or the District of Columbia”.
		
	 Merger Events:
	  	Applicable
		
	 Consequences of Merger Events:
	  	
		
	 (a) Share-for-Share:
	  	Modified Calculation Agent Adjustment
		
	 (b) Share-for-Other:
	  	Cancellation and Payment (Calculation Agent Determination)

  
 6 

			
		
	 (c) Share-for-Combined:
	  	Cancellation and Payment (Calculation Agent Determination); provided that the Calculation Agent may elect Component Adjustment for all or part of the Transaction
		
	 Tender Offer:
	  	Applicable; provided that the definition of “Tender Offer” in Section 12.1 of the Equity Definitions will be amended by replacing the phrase “greater than 10% and less than 100% of the outstanding voting
shares of the Counterparty” in the third and fourth line thereof with “(a) greater than 20% and less than 100% of the outstanding Shares of the Counterparty.”
		
	 Consequences of Tender Offers:
	  	
		
	 (a) Share-for-Share:
	  	Modified Calculation Agent Adjustment
		
	 (b) Share-for-Other:
	  	Modified Calculation Agent Adjustment
		
	 (c) Share-for-Combined:
	  	Modified Calculation Agent Adjustment
		
	 Consequences of Announcement Events:
	  	Modified Calculation Agent Adjustment as set forth in Section 12.3(d) of the Equity Definitions; provided that, in respect of an Announcement Event, (x) references to “Tender Offer” shall be replaced by
references to “Announcement Event” and references to “Tender Offer Date” shall be replaced by references to “date of such Announcement Event”, (y) the phrase “exercise, settlement, payment or any other terms of the
Transaction (including, without limitation, the spread)” shall be replaced with the phrase “Cap Price (provided that in no event shall the Cap Price be less than the Strike Price)” and the words “whether within a
commercially reasonable (as determined by the Calculation Agent) period of time prior to or after the Announcement Event” shall be inserted prior to the word “which” in the seventh line, and (z) for the avoidance of doubt, the
Calculation Agent shall, in good faith and a commercially reasonable manner, determine whether the relevant Announcement Event has had a material economic effect on the Transaction and, if so, shall adjust the Cap Price accordingly in good faith and
in a commercially reasonable manner to take into account such economic effect on one or more occasions on or after the date of the Announcement Event up to, and including, the Expiration Date, any Early Termination Date and/or any other date of
cancellation, it being understood that any adjustment in respect of an Announcement Event shall take into account any earlier adjustment relating to the same Announcement Event and shall not be duplicative with any other adjustment or cancellation
valuation made pursuant to this Confirmation, the Equity Definitions or the Agreement; provided that in no event shall the Cap Price be adjusted to be less than the Strike Price. An Announcement Event shall be an “Extraordinary
Event” for purposes of the Equity Definitions, to which Article 12 of the Equity Definitions is applicable; provided further that upon the Calculation Agent making an adjustment, determined in a commercially reasonable manner, to the Cap
Price upon any Announcement Event, then the Calculation Agent shall make an adjustment to the Cap Price in good faith and in a commercially reasonable manner upon any announcement regarding the same event that gave rise to the original Announcement
Event regarding the abandonment of any such event to the extent necessary to reflect the economic effect of such subsequent announcement on the Transaction (provided that in no event shall the Cap Price be less than the Strike
Price).

  
 7 

			
		
	Announcement Event:	  	(i) The public announcement (whether by Counterparty, any of Counterparty’s affiliates or agents or a Valid Third Party Entity) of any Merger Event or Tender Offer, or the announcement by Counterparty of any intention to enter
into a Merger Event or Tender Offer, (ii) the public announcement by Counterparty of an intention by Counterparty to solicit or enter into, or to explore strategic alternatives or other similar undertaking that may include, a Merger Event or
Tender Offer, (iii) there occurs a public announcement (whether by Counterparty, any of Counterparty’s affiliates or agents or a Valid Third Party Entity) of any potential acquisition by Counterparty and/or its subsidiaries where the
consideration exceeds 35% of the market capitalization of the Counterparty as of the date of such announcement, or (iv) any subsequent public announcement (whether by Counterparty, any of Counterparty’s affiliates or agents or a Valid
Third Party Entity) of a change to a transaction or intention that is the subject of an announcement of the type described in clause (i), (ii) or (iii) of this sentence (including, without limitation, a new announcement, whether or not by the
same party, relating to such a transaction or intention or the announcement of a withdrawal from, or the abandonment or discontinuation of, such a transaction or intention); provided that, for the avoidance of doubt, the occurrence of an
Announcement Event with respect to any transaction or intention shall not preclude the occurrence of a later Announcement Event with respect to such transaction or intention.
		
	Valid Third Party Entity:	  	In respect of any transaction, any third party that has a bona fide intent to enter into or consummate such transaction (it being understood and agreed that in determining whether such third party has such a bona fide intent, the
Calculation Agent may take into consideration the effect of the relevant announcement by such third party on the Shares and/or options relating to the Shares).
		
	Notice of Merger Consideration and Consequences:	  	Upon the occurrence of a Merger Event that causes the Shares to be converted into the right to receive more than a single type of consideration (determined based in part upon any form of stockholder election), Counterparty shall
reasonably promptly (but in any event prior to the relevant merger date) notify the Calculation Agent of the weighted average of the types and amounts of consideration actually received by the holders of Shares upon consummation of such Merger
Event.
		
	Nationalization, Insolvency or Delisting:	  	Cancellation and Payment (Calculation Agent Determination); provided that in addition to the provisions of Section 12.6(a)(iii) of the Equity Definitions, it will also constitute a Delisting if the Shares are not
immediately re-listed, re-traded or re-quoted on any of the New York Stock Exchange, The NASDAQ Global Select Market or The
NASDAQ Global Market (or their respective successors); if the Shares are immediately re-listed, re-traded or re-quoted on any
such exchange or quotation system, such exchange or quotation system shall thereafter be deemed to be the Exchange.

  
 8 

			
		
	Additional Disruption Events:	  	
		
	 (a) Change in Law:
	  	Applicable; provided that Section 12.9(a)(ii) of the Equity Definitions is hereby amended (i) by replacing the phrase “the interpretation” in the third line thereof with the phrase “, or public
announcement of, the formal or informal interpretation”, (ii) by adding the phrase “and/or Hedge Position” after the word “Shares” in clause (X) thereof and (iii) immediately following the word
“Transaction” in clause (X) thereof, by adding the phrase “in the manner contemplated by the Hedging Party on the Trade Date”; and provided further that Section 12.9(a)(ii) of the Equity Definitions is hereby
amended by replacing the parenthetical beginning after the word “regulation” in the second line thereof with the words “(including, for the avoidance of doubt and without limitation, (x) any tax law or (y) adoption or
promulgation of new regulations authorized or mandated by existing statute).”
		
	 (b) Failure to Deliver:
	  	Applicable
		
	 (c) Insolvency Filing:
	  	Applicable
		
	 (d) Hedging Disruption:
	  	Applicable; provided that (i) Section 12.9(a)(v) of the Equity Definitions is hereby amended by inserting the following sentence at the end of such Section: “For the avoidance of doubt, (i) the term
“equity price risk” shall be deemed to include, but shall not be limited to, stock price and volatility risk, and (ii) the transactions or assets referred to in phrases (A) or (B) above must be available on commercially
reasonable pricing and other terms.”; and (ii) Section 12.9(b)(iii) of the Equity Definitions is hereby amended by inserting in the third line thereof, after the words “to terminate the Transaction”, the words “or a
portion of the Transaction affected by such Hedging Disruption”.
		
	 (e) Increased Cost of Hedging:
	  	Not Applicable
		
	Hedging Party:	  	Dealer
		
	Determining Party:	  	For all applicable Extraordinary Events, Dealer; all calculations and determinations made by the Determining Party shall be made in good faith and in a commercially reasonable manner; provided that, upon receipt of written
request from Counterparty, the Determining Party shall promptly provide Counterparty with a written explanation describing in reasonable detail any calculation, adjustment or determination made by it (including any quotations, market data or
information from internal or external sources used in making such calculation, adjustment or determination, as the case may be, in a commonly used file format for the storage and manipulation of financial data, but without disclosing Determining
Party’s proprietary models or other information that may be proprietary or subject to contractual, legal or regulatory obligations to not disclose such information), and shall use commercially reasonable efforts to provide such written
explanation within five (5) Exchange Business Days from the receipt of such request.
		
	Non-Reliance:	  	Applicable
		
	Agreements and Acknowledgments Regarding Hedging Activities:	  	Applicable
		
	Additional Acknowledgments:	  	Applicable

  
 9 

 3. Calculation Agent: Dealer; provided that, following the occurrence of an
Event of Default of the type described in Section 5(a)(vii) of the Agreement with respect to which Dealer is the sole Defaulting Party, if the Calculation Agent fails to timely make any calculation, adjustment or determination required to be
made by the Calculation Agent hereunder or to perform any obligation of the Calculation Agent hereunder and such failure continues for five (5) Exchange Business Days following notice to the Calculation Agent by Counterparty of such failure,
Counterparty shall have the right to designate a nationally recognized third-party dealer in over-the-counter corporate equity derivatives to act, during the period
commencing on the date such Event of Default occurred and ending on the Early Termination Date with respect to such Event of Default, as the Calculation Agent. 

All calculations and determinations made by the Calculation Agent shall be made in good faith and in a commercially reasonable manner;
provided that, upon receipt of written request from Counterparty, the Calculation Agent shall promptly provide Counterparty with a written explanation describing in reasonable detail any calculation, adjustment or determination made by it
(including any quotations, market data or information from internal or external sources used in making such calculation, adjustment or determination, as the case may be, but without disclosing Dealer’s proprietary models or other information
that may be proprietary or subject to contractual, legal or regulatory obligations to not disclose such information), and shall use commercially reasonable efforts to provide such written explanation within five (5) Exchange Business Days from
the receipt of such request. 
 4. Account Details: 

Dealer Payment Instructions: 
  

			
	 Bank:
	  	[                     ]
	 SWIFT:
	  	[                     ]
	 Bank Routing:
	  	[                     ]
	 Acct Name:
	  	[                     ]
	 Acct No.:
	  	[                     ]

 Counterparty Payment Instructions: To be advised. 

5. Offices: 

The Office of Dealer for the Transaction is: New York 

[Dealer Address] 

The Office of Counterparty for the Transaction is: Inapplicable, Company is not a Multibranch Party. 

6. Notices: For purposes of this Confirmation: 

(a) Address for notices or communications to Counterparty: 
  

	 	To:	 Infinera Corporation 

140 Caspian Court 

Sunnyvale, CA 94089 

  
 10 

			
	 Attention:
	  	[                     ]
	 Telephone No.:
	  	[                     ]
	 Email:
	  	[                     ]

 (b) Address for notices or communications to Dealer: 

 

			
	 To:
	  	[Dealer Address]
	 Attention:
	  	[                     ]
	 Telephone:
	  	[                     ]
	 Facsimile:
	  	[                     ]
	 Email:
	  	[                     ]
	 With a copy to:
	  	[Dealer Address]
	 Attention:
	  	[                     ]
	 Telephone:
	  	[                     ]
	 Facsimile:
	  	[                     ]
	 Email:
	  	[                     ]

 7. Representations, Warranties and Agreements:  

(a) In addition to the representations and warranties in the Agreement and those contained elsewhere herein, Counterparty represents and
warrants to and for the benefit of, and agrees with, Dealer as follows: 
 (i) On the Trade Date (A) none of
Counterparty and its officers and directors is aware of any material non-public information regarding Counterparty or the Shares, and (B) all reports and other documents filed by Counterparty with the
Securities and Exchange Commission pursuant to the Exchange Act when considered as a whole (with the more recent such reports and documents deemed to amend inconsistent statements contained in any earlier such reports and documents), do not contain
any untrue statement of a material fact or any omission of a material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances in which they were made, not misleading. 

(ii) Counterparty is not on the Trade Date engaged in a distribution, as such term is used in Regulation M under the Exchange
Act, of any securities of Counterparty, other than the distribution of the Convertible Notes (as defined below). Counterparty shall not, until the second Exchange Business Day immediately following the Trade Date, engage in any such distribution.

 (iii) On the Trade Date, neither Counterparty nor any “affiliate” or “affiliated purchaser” (each as
defined in Rule 10b-18 of the Exchange Act (“Rule 10b-18”)) shall directly or indirectly (including, without limitation, by means of any cash-settled or
other derivative instrument) purchase, offer to purchase, place any bid or limit order that would effect a purchase of, or commence any tender offer relating to, any Shares (or an equivalent interest, including a unit of beneficial interest in a
trust or limited partnership or a depository share) or any security convertible into or exchangeable or exercisable for Shares. 

(iv) Without limiting the generality of Section 13.1 of the Equity Definitions, Counterparty acknowledges that neither
Dealer nor any of its affiliates is making any representations or warranties or taking any position or expressing any view with respect to the treatment of the Transaction under any accounting standards including ASC Topic 260, Earnings Per
Share, ASC Topic 815, Derivatives and Hedging, or ASC Topic 480, Distinguishing Liabilities from Equity and ASC 815-40, Derivatives and Hedging – Contracts in
Entity’s Own Equity (or any successor issue statements). 
 (v) Without limiting the generality of
Section 3(a)(iii) of the Agreement, the Transaction will not violate Rule 13e-1 or Rule 13e-4 under the Exchange Act. 

(vi) Prior to the Trade Date, Counterparty shall deliver to Dealer a resolution of Counterparty’s board of directors
authorizing the Transaction. 

  
 11 

 (vii) Counterparty is not entering into this Confirmation to create actual
or apparent trading activity in the Shares (or any security convertible into or exchangeable for Shares) or to manipulate the price of the Shares (or any security convertible into or exchangeable for Shares) or otherwise in violation of the Exchange
Act. 
 (viii) Counterparty is not, and after giving effect to the transactions contemplated hereby will not be, required to
register as, an “investment company” as such term is defined in the Investment Company Act of 1940, as amended. 

(ix) On each of the Trade Date and the Premium Payment Date, Counterparty is not “insolvent” (as such term is defined
under Section 101(32) of the U.S. Bankruptcy Code (Title 11 of the United States Code) (the “Bankruptcy Code”)) and Counterparty would be able to purchase the Number of Shares in compliance with the laws of the jurisdiction of
Counterparty’s incorporation. 
 (x) To Counterparty’s knowledge, no U.S. state or local law, rule, regulation or
regulatory order applicable to the Shares would give rise to any reporting, consent, registration or other requirement (including without limitation a requirement to obtain prior approval from any person or entity) as a result of Dealer or its
affiliates owning or holding (however defined) Shares; provided that no such representation shall be made by Counterparty with respect to any rules and regulations applicable to Dealer (including FINRA) arising from Dealer’s status as a
regulated entity under applicable law. 
 (xi) Counterparty (A) is capable of evaluating investment risks independently,
both in general and with regard to all transactions and investment strategies involving a security or securities; (B) will exercise independent judgment in evaluating the recommendations of any broker-dealer or its associated persons, unless it
has otherwise notified the broker-dealer in writing, (C) has total assets of at least $50 million. 
 (xii) The
assets of counterparty do not constitute “plan assets” under the Employee Retirement Income Security Act of 1974, as amended, the Department of Labor Regulations promulgated thereunder or similar law. 

(b) Each of Dealer and Counterparty agrees and represents that it is an “eligible contract participant” as defined in
Section 1a(18) of the U.S. Commodity Exchange Act, as amended, and is entering into the Transaction as principal (and not as agent or in any other capacity, fiduciary or otherwise) and not for the benefit of any third party. 

(c) Each of Dealer and Counterparty acknowledges that the offer and sale of the Transaction to it is intended to be exempt from registration
under the Securities Act, by virtue of Section 4(a)(2) thereof. Accordingly, Counterparty represents and warrants to Dealer that (i) it has the financial ability to bear the economic risk of its investment in the Transaction and is able to
bear a total loss of its investment and its investments in and liabilities in respect of the Transaction, which it understands are not readily marketable, are not disproportionate to its net worth, and it is able to bear any loss in connection with
the Transaction, including the loss of its entire investment in the Transaction, (ii) it is an “accredited investor” as that term is defined in Regulation D as promulgated under the Securities Act, (iii) it is entering into the
Transaction for its own account and without a view to the distribution or resale thereof, (iv) the assignment, transfer or other disposition of the Transaction has not been and will not be registered under the Securities Act and is restricted
under this Confirmation, the Securities Act and state securities laws, and (v) its financial condition is such that it has no need for liquidity with respect to its investment in the Transaction and no need to dispose of any portion thereof to
satisfy any existing or contemplated undertaking or indebtedness and is capable of assessing the merits of and understanding (on its own behalf or through independent professional advice), and understands and accepts, the terms, conditions and risks
of the Transaction.  
 (d) Each of Dealer and Counterparty agrees and acknowledges that Dealer is a “financial
institution,” “swap participant” and “financial participant” within the meaning of Sections 101(22), 101(53C) and 101(22A) of the Bankruptcy Code. The parties hereto further agree and acknowledge (A) that this
Confirmation is (i) a “securities contract,” as such term is defined in Section 741(7) of the Bankruptcy Code, with respect to which each payment and delivery hereunder or in connection herewith is a “termination
value,” “payment amount” or “other transfer obligation” within the meaning of Section 362 of the Bankruptcy Code and a “settlement payment” within the meaning of Section 546 of the Bankruptcy Code, and
(ii) a “swap agreement,” as such term is defined in Section 101(53B) 

  
 12 

 of the Bankruptcy Code, with respect to which each payment and delivery hereunder or in connection herewith
is a “termination value,” “payment amount” or “other transfer obligation” within the meaning of Section 362 of the Bankruptcy Code and a “transfer” within the meaning of Section 546 of the Bankruptcy
Code, and (B) that Dealer is entitled to the protections afforded by, among other sections, Sections 362(b)(6), 362(b)(17), 362(b)(27), 362(o), 546(e), 546(g), 546(j), 548(d)(2), 555, 560 and 561 of the Bankruptcy Code. 

(e) As a condition to the effectiveness of the Transaction, Counterparty shall deliver to Dealer an opinion of counsel, dated as of the
Effective Date, in substantially the form attached hereto as Annex B. 
 (f) Counterparty understands that notwithstanding any other
relationship between Counterparty and Dealer and its affiliates, in connection with the Transaction and any other over-the-counter derivative transactions between
Counterparty and Dealer or its affiliates, Dealer or its affiliates is acting as principal and is not a fiduciary or advisor in respect of any such transaction, including any entry, exercise, amendment, unwind or termination thereof. 

(g) Each party acknowledges and agrees to be bound by the Conduct Rules of the Financial Industry Regulatory Authority, Inc. applicable to
transactions in options, and further agrees not to violate the position and exercise limits set forth therein. 
 (h) Counterparty represents
and warrants that it has received, read and understands the OTC Options Risk Disclosure Statement and a copy of the most recent disclosure pamphlet prepared by The Options Clearing Corporation entitled “Characteristics and Risks of Standardized
Options”. 
 8. Other Provisions: 

(a) Right to Extend. Dealer may divide any Component into additional Components and designate the Expiration Date and the Number of
Options for each such Component if Dealer determines, in good faith and a commercially reasonable manner, that such further division is necessary or advisable to preserve Dealer’s commercially reasonable hedging or hedge unwind activity
hereunder in light of existing liquidity conditions or to enable Dealer to effect purchases of Shares in connection with its commercially reasonable hedging, hedge unwind or settlement activity hereunder in a manner that would, if Dealer were
Counterparty or an affiliated purchaser of Counterparty, be compliant and consistent with applicable legal, regulatory or self-regulatory requirements, or with related policies and procedures, generally applicable to transactions of the type of the
Transactions; provided that in no event shall any Expiration Date for any Component be postponed to a date later than the Final Termination Date.  

(b) Additional Termination Events. Promptly (but in any event within ten Scheduled Trading Days) following any repurchase or conversion
of any of the Counterparty’s [     ]% Convertible Senior Notes due 2024 (the “Convertible Notes”) issued pursuant to the Counterparty’s indenture (the “Indenture”) to be dated September [11],
2018 between the Counterparty and U.S. Bank National Association, as trustee, Counterparty may notify Dealer in writing of such repurchase or conversion and the number of Convertible Notes so repurchased or converted (any such notice, a
“Note Repurchase Notice” and any such event, a “Repurchase Event”). Notwithstanding anything to the contrary in this Confirmation, the receipt by Dealer from Counterparty of (x) any Note Repurchase Notice,
within the applicable time period set forth in the preceding sentence, and (y) a written representation and warranty by Counterparty that, as of the date of such Note Repurchase Notice, Counterparty is not in possession of any material non-public information regarding Counterparty or the Shares, shall constitute an Additional Termination Event as provided in this paragraph. Upon receipt of any such Note Repurchase Notice and the related written
representation and warranty, Dealer shall promptly designate an Exchange Business Day following receipt of such Note Repurchase Notice as an Early Termination Date with respect to the portion of this Transaction corresponding to a number of Options
(the “Repurchase Options”) equal to the lesser of (A) the number of shares of common stock underlying the Convertible Notes applicable to the Transaction that is specified in such Note Repurchase Notice and (B) the Number
of Options as of the date Dealer designates such Early Termination Date and, as of such date, the Number of Options shall be reduced by the number of Repurchase Options. Any payment hereunder with respect to such termination shall be calculated
pursuant to Section 6 of the Agreement as if (1) an Early Termination Date had been designated in respect of a Transaction having terms identical to this Transaction and a Number of Options equal to the number of Repurchase Options,
(2) Counterparty were the sole Affected Party with respect to such Additional Termination Event and (3) the terminated portion of the Transaction were the sole Affected Transaction. 

  
 13 

 (c) Alternative Calculations and Payment on Early Termination and on Certain
Extraordinary Events. If (a) an Early Termination Date (whether as a result of an Event of Default or a Termination Event) occurs or is designated with respect to the Transaction or (b) the Transaction is cancelled or terminated upon
the occurrence of an Extraordinary Event (except as a result of (i) a Nationalization, Insolvency or Merger Event in which the consideration to be paid to all holders of Shares consists solely of cash, (ii) a Merger Event or Tender Offer
that is within Counterparty’s control, or (iii) an Event of Default in which Counterparty is the Defaulting Party or a Termination Event in which Counterparty is the Affected Party, which Event of Default or Termination Event resulted from
an event or events within the Counterparty’s control), and if Dealer would owe any amount to Counterparty pursuant to Section 6(d)(ii) and 6(e) of the Agreement or any Cancellation Amount pursuant to Article 12 of the Equity Definitions
(any such amount, a “Payment Obligation”), then Dealer shall satisfy the Payment Obligation by the Share Termination Alternative (as defined below) unless (a) Counterparty gives irrevocable telephonic notice to Dealer,
confirmed in writing within one Scheduled Trading Day, no later than 12:00 p.m. (New York City time) on the Merger Date, Tender Offer Date, Announcement Date (in the case of a Nationalization, Insolvency or Delisting), Early Termination Date or date
of cancellation, as applicable, of its election that the Share Termination Alternative shall not apply, (b) as of the date of such election, Counterparty represents that is not in possession of any material
non-public information regarding Counterparty or the Shares, and that such election is being made in good faith and not as part of a plan or scheme to evade compliance with the federal securities laws, and
(c) Dealer agrees, in its sole discretion, to such election, in which case the provisions of Section 12.7 or Section 12.9 of the Equity Definitions, or the provisions of Section 6(d)(ii) and 6(e) of the Agreement, as the case may
be, shall apply. 
  

			
		
	Share Termination Alternative:	  	If applicable, Dealer shall deliver to Counterparty the Share Termination Delivery Property on, or within a commercially reasonable period of time after, the date when the relevant Payment Obligation would otherwise be due pursuant
to Section 12.7 or 12.9 of the Equity Definitions or Section 6(d)(ii) and 6(e) of the Agreement, as applicable, in satisfaction of such Payment Obligation in the manner reasonably requested by Counterparty free of payment.
		
	Share Termination Delivery Property:	  	A number of Share Termination Delivery Units, as calculated by the Calculation Agent in good faith and in a commercially reasonable manner, equal to the Payment Obligation divided by the Share Termination Unit Price. The Calculation
Agent shall, in good faith and in a commercially reasonable manner adjust the Share Termination Delivery Property by replacing any fractional portion of a security therein with an amount of cash equal to the value of such fractional security based
on the values used to calculate the Share Termination Unit Price.
		
	Share Termination Unit Price:	  	The value of property contained in one Share Termination Delivery Unit, as determined by the Calculation Agent in its discretion by commercially reasonable means and notified by the Calculation Agent to Dealer at the time of
notification of the Payment Obligation. For the avoidance of doubt, the parties agree that in determining the Share Termination Delivery Unit Price the Calculation Agent may consider a variety of factors, including the market price of the Share
Termination Delivery Units and/or the purchase price paid in connection with the commercially reasonable purchase of Share Termination Delivery Property.

  
 14 

			
		
	Share Termination Delivery Unit:	  	One Share or, if the Shares have changed into cash or any other property or the right to receive cash or any other property as the result of a Nationalization, Insolvency or Merger Event (any such cash or other property, the
“Exchange Property”), a unit consisting of the type and amount of such Exchange Property received by a holder of one Share (without consideration of any requirement to pay cash or other consideration in lieu of fractional amounts of any
securities) in such Nationalization, Insolvency or Merger Event, as determined by the Calculation Agent.
		
	Failure to Deliver:	  	Applicable
		
	Other Applicable Provisions:	  	If Share Termination Alternative is applicable, the provisions of Sections 9.8, 9.9 and 9.11 (as modified above) of the Equity Definitions and the provisions set forth opposite the caption “Representation and Agreement” in
Section 2 will be applicable, except that all references in such provisions to “Physically-settled” shall be read as references to “Share Termination Settled” and all references to “Shares” shall be read as
references to “Share Termination Delivery Units”. “Share Termination Settled” in relation to the Transaction means that the Share Termination Alternative is applicable to the Transaction.

 (d) Disposition of Hedge Shares. Counterparty hereby agrees that if, in the good faith and commercially
reasonable judgment of Dealer, based on the advice of legal counsel, the Shares acquired by Dealer for the purpose of hedging its obligations pursuant to the Transaction (the “Hedge Shares”) cannot be sold in the U.S. public
market by Dealer without registration under the Securities Act, Counterparty shall, at its election: (i) in order to allow Dealer to sell the Hedge Shares in a registered offering for companies of a similar size in a similar industry, use its
commercially reasonable efforts to make available to Dealer an effective registration statement under the Securities Act to cover the resale of such Hedge Shares and (A) enter into an agreement, in form and substance reasonably satisfactory to
Dealer, substantially in the form of an underwriting agreement for a registered offering for companies of a similar size in a similar industry, (B) provide accountant’s “comfort” letters in customary form for registered offerings
of equity securities for companies of a similar size in a similar industry, (C) provide disclosure opinions of nationally recognized outside counsel to Counterparty in customary form for registered offerings of equity securities for companies
of a similar size in a similar industry, (D) provide other customary opinions, certificates and closing documents customary in form for registered offerings of equity securities for companies of a similar size in a similar industry and
(E) afford Dealer a reasonable opportunity to conduct a “due diligence” investigation with respect to Counterparty customary in scope for underwritten offerings of equity securities for companies of a similar size in a similar
industry; provided, however, that, if Counterparty elects clause (i) above but Dealer, in its commercially reasonable discretion, is not satisfied with access to due diligence materials, the results of its due diligence investigation, or
the procedures and documentation for the registered offering referred to above, then clause (ii) or clause (iii) of this Section 8(d) shall apply at the election of Counterparty; (ii) in order to allow Dealer to sell the Hedge
Shares in a private placement, enter into a private placement agreement substantially similar to private placement purchase agreements customary for private placements of equity securities of companies of a similar size in a similar industry, in
form and substance commercially reasonably satisfactory to Dealer using best efforts to include customary representations, covenants, blue sky and other governmental filings and/or registrations, indemnities to Dealer, due diligence rights (for
Dealer or any designated buyer of the Hedge Shares from Dealer), opinions and certificates and such other documentation as is customary for private placements agreements of equity securities of companies of a similar size in a similar industry, as
is reasonably acceptable to Dealer (in which case, the Calculation Agent shall make any adjustments to the terms of the Transaction that are necessary, in its good faith and commercially reasonable judgment, to compensate Dealer for any commercially
reasonable customary liquidity discount from the public market price of the Shares incurred on the sale of Hedge Shares in a private placement); or (iii) purchase the Hedge Shares from Dealer at the Relevant Price on such Exchange Business
Days, and in the amounts, requested by Dealer. 

  
 15 

 (e) Repurchase Notices. Counterparty shall, at least one Scheduled Valid Day prior to
any day on which Counterparty intends to effect any repurchase of Shares, give Dealer written notice of such repurchase (a “Repurchase Notice”) on such day if, following such repurchase, the Notice Percentage would reasonably be
expected to be (i) greater than [    ]% and (ii) greater by 0.5% than the Notice Percentage included in the immediately preceding Repurchase Notice (or, in the case of the first such Repurchase Notice, greater than the
Notice Percentage as of the date hereof). The “Notice Percentage” as of any day is the fraction, expressed as a percentage, the numerator of which is the Number of Shares and the denominator of which is the number of Shares
outstanding on such day. In the event that Counterparty fails to provide Dealer with a Repurchase Notice on the day and in the manner specified in this Section 8(e) then Counterparty agrees to indemnify and hold harmless Dealer, its affiliates
and their respective directors, officers, employees, agents and controlling persons (Dealer and each such person being an “Indemnified Party”) from and against any and all commercially reasonable losses (including losses relating to
the Dealer’s commercially reasonable hedging activities as a consequence of becoming, or of the risk of becoming, a Section 16 “insider”, including without limitation, any forbearance from hedging activities or cessation of
hedging activities and any losses in connection therewith with respect to the Transaction), claims, damages and liabilities (or actions in respect thereof), joint or several, to which such Indemnified Party may become subject under applicable
securities laws, including without limitation, Section 16 of the Exchange Act or under any U.S. state or federal law, regulation or regulatory order, in each case relating to or arising out of such failure. If for any reason the foregoing
indemnification is unavailable to any Indemnified Party or insufficient to hold harmless any Indemnified Party, then Counterparty shall contribute, to the maximum extent permitted by law, to the amount paid or payable by the Indemnified Party as a
result of such loss, claim, damage or liability. In addition, Counterparty will reimburse any Indemnified Party for all commercially reasonable expenses (including commercially reasonable counsel fees and expenses) as they are incurred (after notice
to Counterparty) in connection with the investigation of, preparation for or defense or settlement of any pending or threatened claim or any action, suit or proceeding arising therefrom, whether or not such Indemnified Party is a party thereto and
whether or not such claim, action, suit or proceeding is initiated or brought by or on behalf of Counterparty, in each case relating to or arising out of such failure. This indemnity shall survive the completion of the Transaction contemplated by
this Confirmation and any assignment and delegation of the Transaction made pursuant to this Confirmation or the Agreement shall inure to the benefit of any permitted assignee of Dealer. Counterparty will not be liable under this indemnity provision
to the extent any loss, claim, damage, liability or expense is found in a final judgment by a court to have resulted from Dealer’s gross negligence or willful misconduct. 

(f) Transfer and Assignment. Either party may transfer or assign any of its rights or obligations under the Transaction with the prior
written consent of the non-transferring party, such consent not to be unreasonably withheld or delayed; provided that Dealer may transfer or assign without any consent of Counterparty its rights and
obligations hereunder, in whole or in part, to (A) any affiliate of Dealer with a rating for its long-term, unsecured and unsubordinated indebtedness at least equivalent to Dealer’s (or its guarantor’s) rating at the time of such
transfer or assignment or whose obligations would be guaranteed by Dealer or its ultimate parent or (B) any other person or any other person whose obligations would be guaranteed by a person with a rating for its long-term, unsecured and
unsubordinated indebtedness not less than A3 from Moody’s Investor Service, Inc. or its successor or A- from Standard and Poor’s Rating Group, Inc. or its successor (any such affiliate or other
person, a “Designated Transferee”); provided further that (i) Dealer will notify Counterparty in writing prior to any proposed transfer or assignment to a Designated Transferee, (ii) as a result of any such transfer
or assignment, Counterparty will not be required to pay the Designated Transferee on any payment date an amount under Section 2(d)(i)(4) of the Agreement greater than the amount, if any, that Counterparty would have been required to pay Dealer
in the absence of such transfer or assignment and (iii) the Designated Transferee shall provide Counterparty with a complete and accurate U.S. Internal Revenue Service Form W-9 or W-8 (as applicable) prior to becoming a party to the Transaction. If at any time at which (1) the Equity Percentage exceeds 8.0% or (2) Dealer, Dealer Group (as defined below) or any person whose ownership
position would be aggregated with that of Dealer or Dealer Group (Dealer, Dealer Group or any such person, a “Dealer Person”) under the Business Combinations Statute or other federal, state or local law, rule, regulation or
regulatory order or organizational documents or contracts of Counterparty applicable to ownership of Shares (“Applicable Restrictions”), owns, beneficially owns, constructively owns, controls, holds the power to vote or otherwise
meets a relevant definition of ownership in excess of a number of Shares equal to (x) the number of Shares that would give rise to reporting, registration, filing or notification obligations or other requirements (including obtaining prior
approval by a state or federal regulator) of a Dealer Person under Applicable Restrictions and with respect to which such requirements have not been met or the relevant 

  
 16 

 
approval has not been received minus (y) 1% of the number of Shares outstanding on the date of determination (either such condition described in clause (1) or (2), an “Excess
Ownership Position”), if Dealer, in its commercially reasonable discretion, is unable to effect a transfer or assignment to a third party in accordance with the requirements set forth above after its commercially reasonable efforts on
pricing and terms and within a time period reasonably acceptable to Dealer such that an Excess Ownership Position no longer exists, Dealer may designate any Scheduled Valid Day as an Early Termination Date with respect to a portion (the
“Terminated Portion”) of the Transaction, such that an Excess Ownership Position no longer exists following such partial termination. In the event that Dealer so designates an Early Termination Date with respect to a portion of the
Transaction, a payment or delivery shall be made pursuant to Section 6 of the Agreement and Section 8(c) of this Confirmation as if (i) an Early Termination Date had been designated in respect of a Transaction having terms identical
to the Terminated Portion of the Transaction, (ii) Counterparty were the sole Affected Party with respect to such partial termination, (iii) such portion of the Transaction were the only Terminated Transaction and (iv) Dealer were the
party entitled to designate an Early Termination Date pursuant to Section 6(b) of the Agreement and to determine the amount payable pursuant to Section 6(e) of the Agreement. The “Equity Percentage” as of any day is the
fraction, expressed as a percentage, (A) the numerator of which is the number of Shares that Dealer and any of its affiliates subject to aggregation with Dealer for purposes of the “beneficial ownership” test under Section 13 of
the Exchange Act and all persons who may form a “group” (within the meaning of Rule 13d-5(b)(1) under the Exchange Act) with Dealer (collectively, “Dealer Group”) “beneficially
own” (within the meaning of Section 13 of the Exchange Act) without duplication on such day and (B) the denominator of which is the number of Shares outstanding on such day. 

In the case of a transfer or assignment by Counterparty of its rights and obligations hereunder and under the Agreement, in whole or in part
(any such Options so transferred or assigned, the “Transfer Options”), to any party, withholding of such consent by Dealer shall not be considered unreasonable if such transfer or assignment does not meet the reasonable conditions
that Dealer may impose including, but not limited, to the following conditions: 
 (A) With respect to any Transfer Options,
Counterparty shall not be released from its notice and indemnification obligations pursuant to Section 8(e) or any obligations under Section 2 (regarding Extraordinary Events) or 8(d) of this Confirmation; 

(B) Any Transfer Options shall only be transferred or assigned to a third party that is a U.S. person (as defined in the
Internal Revenue Code of 1986, as amended); 
 (C) Such transfer or assignment shall be effected on terms, including any
reasonable undertakings by such third party (including, but not limited to, undertakings with respect to compliance with applicable securities laws in a manner that, in the commercially reasonable judgment of Dealer, will not expose Dealer to
material risks under applicable securities laws) and execution of any documentation and delivery of customary legal opinions with respect to securities laws and other matters by such third party and Counterparty as are commercially reasonably
requested and reasonably satisfactory to Dealer; 
 (D) Dealer will not, as a result of such transfer and assignment, be
required to pay the transferee on any payment date an amount under Section 2(d)(i)(4) of the Agreement greater than an amount that Dealer would have been required to pay to Counterparty in the absence of such transfer and assignment; 

(E) An Event of Default, Potential Event of Default or Termination Event will not occur as a result of such transfer and
assignment; 
 (F) Without limiting the generality of clause (B), Counterparty shall have caused the transferee to make such
Payee Tax Representations and to provide such tax documentation as may be reasonably requested by Dealer to permit Dealer to determine that results described in clauses (D) and (E) will not occur upon or after such transfer and assignment; and

 (G) Counterparty shall be responsible for all commercially reasonable costs and expenses, including commercially
reasonable counsel fees, incurred by Dealer in connection with such transfer or assignment. 

  
 17 

 (g) Staggered Settlement. If Dealer determines in good faith and in
its commercially reasonable discretion that the number of Shares required to be delivered to Counterparty hereunder on any Settlement Date would result in an Excess Ownership Position, then Dealer may, by notice to Counterparty prior to such
Settlement Date (a “Nominal Settlement Date”), elect to deliver any Shares due to be delivered on two or more dates (each, a “Staggered Settlement Date”) or at two or more times on the Nominal Settlement Date as
follows: 
 (i) in such notice, Dealer will specify to Counterparty the related Staggered Settlement Dates (each of which
will be on or prior to the 20th Exchange Business Day after such Nominal Settlement Date) or delivery times and how it will allocate the Shares it is required to deliver under “Delivery
Obligation” (above) among the Staggered Settlement Dates or delivery times; and 
 (ii) the aggregate number of Shares
that Dealer will deliver to Counterparty hereunder on all such Staggered Settlement Dates and delivery times will equal the number of Shares that Dealer would otherwise be required to deliver on such Nominal Settlement Date; provided that in
no event shall any Staggered Settlement Date be a date later than the Final Termination Date. 
 (h) Disclosure.
Effective from the date of commencement of discussions concerning the Transaction, Counterparty and each of its employees, representatives, or other agents may disclose to any and all persons, without limitation of any kind, the tax treatment and
tax structure of the Transaction and all materials of any kind (including opinions or other tax analyses) that are provided to Counterparty relating to such tax treatment and tax structure.  

(i) No Netting and Set-off. The provisions of Section 2(c) of the Agreement
shall not apply to the Transaction. Each party waives any and all rights it may have to set-off delivery or payment obligations it owes to the other party under the Transaction against any delivery or payment
obligations owed to it by the other party, whether arising under the Agreement, under any other agreement between parties hereto, by operation of law or otherwise. 

(j) Equity Rights. Dealer acknowledges and agrees that this Confirmation is not intended to convey to it rights with
respect to the Transaction that are senior to the claims of common stockholders in the event of Counterparty’s bankruptcy. For the avoidance of doubt, the parties agree that the preceding sentence shall not apply at any time other than during
Counterparty’s bankruptcy to any claim arising as a result of a breach by Counterparty of any of its obligations under this Confirmation or the Agreement. For the avoidance of doubt, the parties acknowledge that the obligations of Counterparty
under this Confirmation are not secured by any collateral that would otherwise secure the obligations of Counterparty herein under or pursuant to any other agreement. 

(k) Early Unwind. In the event the sale of the Firm Securities (as defined in the Underwriting Agreement, dated as of
September [6], 2018, among [Dealer] and [    ], as representatives of the several underwriters thereto, and Counterparty (the “Underwriting Agreement”) is not consummated pursuant to the Underwriting
Agreement for any reason by the close of business in New York on September [11], 2018 (or such later date as agreed upon by the parties which in no event shall be later than the second Scheduled Valid Day following September [11], 2018) (such date
or such later date as agreed upon being the “Accelerated Unwind Date”), the Transaction shall automatically terminate on the Accelerated Unwind Date and (i) the Transaction and all of the respective rights and obligations of
Dealer and Counterparty under the Transaction shall be cancelled and terminated and (ii) each party shall be released and discharged by the other party from and agrees not to make any claim against the other party with respect to any
obligations or liabilities of the other party arising out of and to be performed in connection with the Transaction either prior to or after the Accelerated Unwind Date. 

(l) Illegality. The parties agree that, for the avoidance of doubt, for purposes of Section 5(b)(i) of the
Agreement, “any applicable law” shall include the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010, any rules and regulations promulgated thereunder and any similar law or regulation, without regard to Section 739 of
the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 or any similar legal certainty provision in any legislation enacted, or rule or regulation promulgated, on or after the Trade Date, and the consequences specified in the
Agreement, including without limitation, the consequences specified in Section 6 of the Agreement, shall apply to any Illegality arising from any such act, rule or regulation.  

  
 18 

 (m) Amendments to Equity Definitions and the Agreement. The
following amendments shall be made to the Equity Definitions: 
 (i) solely for purposes of applying the Equity Definitions
and for purposes of this Confirmation, any reference in the Equity Definitions to a Strike Price shall be deemed to be a reference to either of the Strike Price or the Cap Price, or both, as appropriate; 

(ii) Section 12.9(b)(i) of the Equity Definitions is hereby amended by replacing “either party may elect” with
“Dealer may elect or, if Counterparty represents to Dealer in writing at the time of such election that (i) it is not aware of any material nonpublic information with respect to Counterparty or the Shares and (ii) it is not making
such election as part of a plan or scheme to evade compliance with the U.S. federal securities laws, Counterparty may elect”; 

(iii) for the purpose of any adjustment under Section 11.2(c) of the Equity Definitions, the first sentence of
Section 11.2(c) of the Equity Definitions, prior to clause (A) thereof, is hereby amended to read as follows: (c) If “Calculation Agent Adjustment” is specified as the Method of Adjustment in the related Confirmation of a
Share Option Transaction, then following the announcement or occurrence of any Potential Adjustment Event, the Calculation Agent will determine whether such Potential Adjustment Event has, in the commercially reasonable judgment of the Calculation
Agent, a material economic effect on the theoretical value of the relevant Shares or options on the Shares (provided that such event is not based on (x) an observable market, other than the market for Counterparty’s own stock or
(y) an observable index, other than an index calculated measured solely by reference to Counterparty’s own operations) and, if so, will (i) make appropriate adjustment(s), if any, determined in a commercially reasonable manner, to any
one or more of: and, the portion of such sentence immediately preceding clause (ii) thereof is hereby amended by deleting the words “diluting or concentrative” and the words “(provided that no adjustments will be made to
account solely for changes in volatility, expected dividends, stock loan rate or liquidity relative to the relevant Shares)” and replacing such latter phrase with the words “(provided that, solely in the case of Sections 11.2(e)(i),
(ii)(A), (iv) and (v), no adjustments will be made to account solely for changes in volatility, expected dividends, stock loan rate or liquidity relative to the relevant Shares but, for the avoidance of doubt, solely in the case of Sections
11.2(e)(ii)(B) through (D), (iii) (vi) and (vii) adjustments may be made to account solely for changes in volatility, expected dividends, stock loan rate or liquidity relative to the relevant Shares)”; 

(iv) Section 11.2(a) of the Equity Definitions is hereby amended by (1) deleting the words “in the determination
of the Calculation Agent, a diluting or concentrative effect” and replacing these words with “in the commercially reasonable judgment of the Calculation Agent, a material economic effect”; and (2) adding at the end thereof
“; provided that such event is not based on (i) an observable market, other than the market for Counterpart’s own stock or (ii) an observable index, other than an index calculated measured solely by reference to
Counterparty’s own operations”; 
 (v) Section 11.2(e)(vii) of the Equity Definitions is hereby amended and
restated as follows: “any other corporate event involving the Issuer or its securities that in the commercially reasonable judgment of the Calculation Agent has a material economic effect on the theoretical value of the Shares or options of the
Shares; provided that such corporate event involving the Issuer is not based on (a) an observable market, other than the market for Counterparty’s own stock or (b) an observable index, other than an index calculated measured
solely by reference to Counterparty’s own operations.”; 
 (vi) Section 12.7(b) of the Equity Definitions is
hereby amended by deleting the words “(and in any event within five Exchange Business Days) by the parties after” appearing after the words “agreed promptly” and replacing with the words “by the parties on or prior to”;
and 
 (n) Governing Law. THE AGREEMENT, THIS CONFIRMATION AND ALL MATTERS ARISING IN CONNECTION WITH THE AGREEMENT
AND THIS CONFIRMATION SHALL BE GOVERNED BY, AND CONSTRUED AND ENFORCED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK (WITHOUT REFERENCE TO ITS CHOICE OF LAW DOCTRINE, OTHER THAN TITLE  

  
 19 

 
14 OF THE NEW YORK GENERAL OBLIGATIONS LAW). THE PARTIES HERETO IRREVOCABLY SUBMIT TO THE EXCLUSIVE JURISDICTION OF THE FEDERAL AND STATE COURTS LOCATED IN THE BOROUGH OF MANHATTAN, IN THE CITY
OF NEW YORK IN ANY SUIT OR PROCEEDING ARISING OUT OF OR RELATING TO THE AGREEMENT, THIS CONFIRMATION OR ANY TRANSACTIONS CONTEMPLATED HEREBY. 

(o) Adjustments. For the avoidance of doubt, whenever the Calculation Agent or Determining Party is called upon
to make an adjustment pursuant to the terms of this Confirmation or the Equity Definitions to take into account the effect of an event, the Calculation Agent or Determining Party shall make such adjustment by reference to the effect of such event on
the Hedging Party, assuming that the Hedging Party maintains a commercially reasonable hedge position. 
 (p) Delivery
or Receipt of Cash. For the avoidance of doubt, other than payment of the Premium by Counterparty, nothing in this Confirmation shall be interpreted as requiring Counterparty to cash settle the Transaction, except in circumstances where cash
settlement is within Counterparty’s control (including, without limitation, where Counterparty elects to deliver or receive cash) or in those circumstances in which holders of Shares would also receive cash. 

(q) Waiver of Jury Trial. EACH PARTY HEREBY IRREVOCABLY WAIVES ANY AND ALL RIGHTS TO TRIAL BY JURY WITH RESPECT TO
ANY LEGAL PROCEEDING ARISING OUT OF OR RELATING TO THE AGREEMENT, THIS CONFIRMATION OR ANY TRANSACTIONS CONTEMPLATED HEREBY.  

(r) Amendment. This Confirmation and the Agreement may not be modified, amended or supplemented, except in a written
instrument signed by Counterparty and Dealer.  
 (s) Counterparts. This Confirmation may be executed in
several counterparts, each of which shall be deemed an original but all of which together shall constitute one and the same instrument. 

(t) Tax Matters. For the purpose of Sections 4(a)(i) and (ii) of the Agreement, Counterparty agrees to deliver to
Dealer one duly executed and completed United States Internal Revenue Service Form W-9 (or successor thereto) and Dealer agrees to deliver to Counterparty, as applicable, a U.S. Internal Revenue Service Form W-8 or Form W-9 (or successor thereto). Such forms or documents shall be delivered upon (i) execution of this Confirmation, and (ii) reasonable request of the other
party. 

  
 20 

 Please confirm that the foregoing correctly sets forth the terms of our agreement by sending
to us a letter or telex substantially similar to this facsimile, which letter or telex sets forth the material terms of the Transaction to which this Confirmation relates and indicates your agreement to those terms. 

 

			
	Yours faithfully,
	
	[DEALER]
		
	By:	 	  

		 	Name:
		 	Title:

  

			
	Agreed and Accepted By:
	
	INFINERA CORPORATION
		
	By	 	  

		 	Name:
		 	Title:

  
 21 

 Annex A 

For each Component of the Transaction, the Number of Options and Expiration Date is set forth below. 

 

					
	 Component Number
	  	 Number of Options
	  	 Expiration Date

	1	  		  	July 5, 2024
	2	  		  	July 8, 2024
	3	  		  	July 9, 2024
	4	  		  	July 10, 2024
	5	  		  	July 11, 2024
	6	  		  	July 12, 2024
	7	  		  	July 15, 2024
	8	  		  	July 16, 2024
	9	  		  	July 17, 2024
	10	  		  	July 18, 2024
	11	  		  	July 19, 2024
	12	  		  	July 22, 2024
	13	  		  	July 23, 2024
	14	  		  	July 24, 2024
	15	  		  	July 25, 2024
	16	  		  	July 26, 2024
	17	  		  	July 29, 2024
	18	  		  	July 30, 2024
	19	  		  	July 31, 2024
	20	  		  	August 1, 2024
	21	  		  	August 2, 2024
	22	  		  	August 5, 2024
	23	  		  	August 6, 2024
	24	  		  	August 7, 2024
	25	  		  	August 8, 2024
	26	  		  	August 9, 2024
	27	  		  	August 12, 2024
	28	  		  	August 13, 2024
	29	  		  	August 14, 2024
	30	  		  	August 15, 2024
	31	  		  	August 16, 2024
	32	  		  	August 19, 2024
	33	  		  	August 20, 2024
	34	  		  	August 21, 2024
	35	  		  	August 22, 2024
	36	  		  	August 23, 2024
	37	  		  	August 26, 2024
	38	  		  	August 27, 2024
	39	  		  	August 28, 2024
	40	  		  	August 29, 2024

  
 22 

 Annex B 

Form of Opinion 
  

	1.	 The Counterparty is validly existing and in good standing under the laws of the State of Delaware.

  

	2.	 The Counterparty is qualified as a foreign corporation and is in good standing in the State of New York.

  

	3.	 The execution and delivery by the Counterparty of the Confirmation and the performance by the Counterparty of
its obligations thereunder (i) have been duly authorized by all necessary corporate action on the part of the Counterparty and (ii) do not violate the certificate of incorporation of the Counterparty. 

 

	4.	 The execution and delivery by the Counterparty of the Confirmation and the performance by the Counterparty of
its obligations thereunder, as of the Premium Payment Date, do not result in a breach of or constitute a default under the express terms of any material agreements specified on the schedule to the opinion. 

  
 23

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