Document:

EX-4.1

 Exhibit 4.1 
  

 
 ZENDESK, INC. 

AND 
 WILMINGTON TRUST, NATIONAL
ASSOCIATION, 
 as Trustee 

INDENTURE 
 Dated as of
March 20, 2018 
 0.25% Convertible Senior Notes due 2023 
  

 

 TABLE OF CONTENTS 

 

					
	 	  	PAGE	 
	 ARTICLE 1
	  			
	 DEFINITIONS
	  			
	 Section 1.01. Definitions
	  	 	1	 
	 Section 1.02. References to Interest
	  	 	11	 
	 ARTICLE 2
	  			
	 ISSUE, DESCRIPTION, EXECUTION, REGISTRATION AND EXCHANGE OF NOTES
	  			
	 Section 2.01. Designation and Amount
	  	 	11	 
	 Section 2.02. Form of Notes
	  	 	12	 
	 Section 2.03. Date and Denomination of Notes; Payments of Interest and Defaulted
Amounts
	  	 	12	 
	 Section 2.04. Execution, Authentication and Delivery of Notes
	  	 	14	 
	 Section 2.05. Exchange and Registration of Transfer of Notes; Restrictions on Transfer;
Depositary
	  	 	14	 
	 Section 2.06. Mutilated, Destroyed, Lost or Stolen Notes
	  	 	20	 
	 Section 2.07. Temporary Notes
	  	 	21	 
	 Section 2.08. Cancellation of Notes Paid, Converted, Etc.
	  	 	21	 
	 Section 2.09. CUSIP Numbers
	  	 	21	 
	 Section 2.10. Additional Notes; Repurchases
	  	 	22	 
	 ARTICLE 3
	  			
	 SATISFACTION AND DISCHARGE
	  			
	 Section 3.01. Satisfaction and Discharge
	  	 	22	 
	 ARTICLE 4
	  			
	 PARTICULAR COVENANTS OF THE COMPANY
	  			
	 Section 4.01. Payment of Principal and Interest
	  	 	23	 
	 Section 4.02. Maintenance of Office or Agency
	  	 	23	 
	 Section 4.03. Appointments to Fill Vacancies in Trustee’s Office
	  	 	23	 
	 Section 4.04. Provisions as to Paying Agent
	  	 	23	 
	 Section 4.05. Existence
	  	 	25	 
	 Section 4.06. Rule 144A Information Requirement and Annual Reports
	  	 	25	 
	 Section 4.07. Stay, Extension and Usury Laws
	  	 	26	 
	 Section 4.08. Compliance Certificate; Statements as to Defaults
	  	 	27	 
	 Section 4.09. Further Instruments and Acts
	  	 	27	 
	 ARTICLE 5
	  			
	 LISTS OF HOLDERS AND REPORTS BY THE COMPANY AND THE TRUSTEE
	  			
	 Section 5.01. Lists of Holders
	  	 	27	 
	 Section 5.02. Preservation and Disclosure of Lists
	  	 	27	 
	 ARTICLE 6
	  			
	 DEFAULTS AND REMEDIES
	  			
	 Section 6.01. Events of Default
	  	 	27	 
	 Section 6.02. Acceleration; Rescission and Annulment
	  	 	29	 
	 Section 6.03. Additional Interest
	  	 	30	 
	 Section 6.04. Payments of Notes on Default; Suit Therefor
	  	 	30	 
	 Section 6.05. Application of Monies Collected by Trustee
	  	 	32	 
	 Section 6.06. Proceedings by Holders
	  	 	32	 
	 Section 6.07. Proceedings by Trustee
	  	 	33	 
	 Section 6.08. Remedies Cumulative and Continuing
	  	 	33	 
	 Section 6.09. Direction of Proceedings and Waiver of Defaults by Majority of
Holders
	  	 	34	 
	 Section 6.10. Notice of Defaults
	  	 	34	 
	 Section 6.11. Undertaking to Pay Costs
	  	 	35	 
	 ARTICLE 7
	  			
	 CONCERNING THE TRUSTEE
	  			
	 Section 7.01. Duties and Responsibilities of Trustee
	  	 	35	 
	 Section 7.02. Reliance on Documents, Opinions, Etc
	  	 	36	 
	 Section 7.03. No Responsibility for Recitals, Etc
	  	 	38	 
	 Section 7.04. Trustee, Paying Agents, Conversion Agents, Bid Solicitation Agent or Note
Registrar May Own Notes
	  	 	38	 
	 Section 7.05. Monies and Shares of Common Stock to Be Held in Trust
	  	 	38	 
	 Section 7.06. Compensation and Expenses of Trustee
	  	 	39	 
	 Section 7.07. Officer’s Certificate as Evidence
	  	 	39	 

					
	 Section 7.08. Eligibility of Trustee
	  	 	39	 
	 Section 7.09. Resignation or Removal of Trustee
	  	 	39	 
	 Section 7.10. Acceptance by Successor Trustee
	  	 	40	 
	 Section 7.11. Succession by Merger, Etc.
	  	 	41	 
	 Section 7.12. Trustee’s Application for Instructions from the Company
	  	 	41	 
	 ARTICLE 8
	  			
	 CONCERNING THE HOLDERS
	  			
	 Section 8.01. Action by Holders
	  	 	42	 
	 Section 8.02. Proof of Execution by Holders
	  	 	42	 
	 Section 8.03. Who Are Deemed Absolute Owners
	  	 	42	 
	 Section 8.04. Company-Owned Notes Disregarded
	  	 	42	 
	 Section 8.05. Revocation of Consents; Future Holders Bound
	  	 	43	 
	 ARTICLE 9
	  			
	 HOLDERS’ MEETINGS
	  			
	 Section 9.01. Purpose of Meetings
	  	 	43	 
	 Section 9.02. Call of Meetings by Trustee
	  	 	43	 
	 Section 9.03. Call of Meetings by Company or Holders
	  	 	44	 
	 Section 9.04. Qualifications for Voting
	  	 	44	 
	 Section 9.05. Regulations
	  	 	44	 
	 Section 9.06. Voting
	  	 	45	 
	 Section 9.07. No Delay of Rights by Meeting
	  	 	45	 
	 ARTICLE 10
	  			
	 SUPPLEMENTAL INDENTURES
	  			
	 Section 10.01. Supplemental Indentures Without Consent of Holders
	  	 	45	 
	 Section 10.02. Supplemental Indentures with Consent of Holders
	  	 	46	 
	 Section 10.03. Effect of Supplemental Indentures
	  	 	47	 
	 Section 10.04. Notation on Notes
	  	 	47	 
	 Section 10.05. Evidence of Compliance of Supplemental Indenture to Be Furnished
Trustee
	  	 	48	 
	 ARTICLE 11
	  			
	 CONSOLIDATION, MERGER, SALE, CONVEYANCE AND LEASE
	  			
	 Section 11.01. Company May Consolidate, Etc. on Certain Terms
	  	 	48	 
	 Section 11.02. Successor Corporation to Be Substituted
	  	 	48	 
	 Section 11.03. Opinion of Counsel to Be Given to Trustee
	  	 	49	 
	 ARTICLE 12
	  			
	 IMMUNITY OF INCORPORATORS, STOCKHOLDERS, OFFICERS AND DIRECTORS
	  			
	 Section 12.01. Indenture and Notes Solely Corporate Obligations
	  	 	49	 
	 ARTICLE 13
	  			
	 [INTENTIONALLY OMITTED]
	  			
	 ARTICLE 14
	  			
	 CONVERSION OF NOTES
	  			
	 Section 14.01. Conversion Privilege
	  	 	49	 
	 Section 14.02. Conversion Procedure; Settlement Upon Conversion
	  	 	52	 
	 Section 14.03. Increased Conversion Rate Applicable to Certain Notes Surrendered in
Connection with Make-Whole Fundamental Changes
	  	 	56	 
	 Section 14.04. Adjustment of Conversion Rate
	  	 	57	 
	 Section 14.05. Adjustments of Prices
	  	 	66	 
	 Section 14.06. Shares to Be Fully Paid
	  	 	66	 
	 Section 14.07. Effect of Recapitalizations, Reclassifications and Changes of the Common
Stock.
	  	 	66	 
	 Section 14.08. Certain Covenants
	  	 	68	 
	 Section 14.09. Responsibility of Trustee
	  	 	68	 
	 Section 14.10. Notice to Holders Prior to Certain Actions
	  	 	69	 
	 Section 14.11. Stockholder Rights Plans
	  	 	69	 
	 Section 14.12. Exchange in Lieu of Conversion
	  	 	69	 
	 ARTICLE 15
	  			
	 REPURCHASE OF NOTES AT OPTION OF HOLDERS
	  			
	 Section 15.01. [Intentionally Omitted]
	  	 	70	 
	 Section 15.02. Repurchase at Option of Holders Upon a Fundamental Change
	  	 	70	 
	 Section 15.03. Withdrawal of Fundamental Change Repurchase Notice
	  	 	72	 

					
	 Section 15.04. Deposit of Fundamental Change Repurchase Price
	  	 	73	 
	 Section 15.05. Covenant to Comply with Applicable Laws Upon Repurchase of
Notes
	  	 	74	 
	 ARTICLE 16
	  			
	 NO REDEMPTION
	  			
	 Section 16.01. No Redemption
	  	 	74	 
	 ARTICLE 17
	  			
	 MISCELLANEOUS PROVISIONS
	  			
	 Section 17.01. Provisions Binding on Company’s Successors
	  	 	74	 
	 Section 17.02. Official Acts by Successor Corporation
	  	 	74	 
	 Section 17.03. Addresses for Notices, Etc.
	  	 	74	 
	 Section 17.04. Governing Law; Jurisdiction
	  	 	75	 
	 Section 17.05. Evidence of Compliance with Conditions Precedent; Certificates and Opinions
of Counsel to Trustee
	  	 	75	 
	 Section 17.06. Legal Holidays
	  	 	76	 
	 Section 17.07. No Security Interest Created
	  	 	76	 
	 Section 17.08. Benefits of Indenture
	  	 	76	 
	 Section 17.09. Table of Contents, Headings, Etc.
	  	 	76	 
	 Section 17.10. Authenticating Agent
	  	 	76	 
	 Section 17.11. Execution in Counterparts
	  	 	77	 
	 Section 17.12. Severability
	  	 	77	 
	 Section 17.13. Waiver of Jury Trial
	  	 	77	 
	 Section 17.14. Force Majeure
	  	 	77	 
	 Section 17.15. Calculations
	  	 	78	 
	 Section 17.16. USA PATRIOT Act
	  	 	78	 
	 Section 17.16. Tax Withholding
	  	 	78	 

 EXHIBIT 
  

							
	Exhibit A	  	Form of Note	  	 	A-1	 

 INDENTURE dated as of March 20, 2018 between ZENDESK, INC., a Delaware corporation,
as issuer (the “Company,” as more fully set forth in Section 1.01) and WILMINGTON TRUST, NATIONAL ASSOCIATION, a national banking association, as trustee (the “Trustee,” as more fully set forth in Section
1.01). 
 W I T N E S S E T H: 

WHEREAS, for its lawful corporate purposes, the Company has duly authorized the issuance of its 0.25% Convertible Senior Notes due 2023
(the “Notes”), initially in an aggregate principal amount not to exceed $500,000,000 (as increased by an amount equal to the aggregate principal amount of any additional Notes purchased by the Initial Purchasers pursuant to the
exercise of their option to purchase additional Notes as set forth in the Purchase Agreement), and in order to provide the terms and conditions upon which the Notes are to be authenticated, issued and delivered, the Company has duly authorized the
execution and delivery of this Indenture; and 
 WHEREAS, the Form of Note, the certificate of authentication to be borne by each
Note, the Form of Notice of Conversion, the Form of Fundamental Change Repurchase Notice and the Form of Assignment and Transfer to be borne by the Notes are to be substantially in the forms hereinafter provided; and 

WHEREAS, all acts and things necessary to make the Notes, when executed by the Company and authenticated and delivered by the Trustee or a
duly authorized authenticating agent, as provided in this Indenture, the valid, binding and legal obligations of the Company, and this Indenture the valid, binding and legal agreement of the Company and the Trustee, have been done and performed, and
the execution of this Indenture and the issuance hereunder of the Notes have in all respects been duly authorized. 
 NOW, THEREFORE, THIS
INDENTURE WITNESSETH: 
 That in order to declare the terms and conditions upon which the Notes are, and are to be, authenticated, issued
and delivered, and in consideration of the premises and of the purchase and acceptance of the Notes by the Holders thereof, the Company covenants and agrees with the Trustee for the equal and proportionate benefit of the respective Holders from time
to time of the Notes (except as otherwise provided below), as follows: 
 ARTICLE 1 

DEFINITIONS 

Section 1.01. Definitions. The terms defined in this Section 1.01 (except as herein otherwise expressly provided or unless
the context otherwise requires) for all purposes of this Indenture and of any indenture supplemental hereto shall have the respective meanings specified in this Section 1.01. The words “herein,” “hereof,”
“hereunder” and words of similar import refer to this Indenture as a whole and not to any particular Article, Section or other subdivision. The terms defined in this Article include the plural as well as the singular. 

“Additional Interest” means all amounts, if any, payable pursuant to Section 4.06(d), Section 4.06(e) and
Section 6.03, as applicable. 
 “Additional Shares” shall have the meaning specified in Section
14.03(a). 

  
 1 

 “Affiliate” of any specified Person means any other Person
directly or indirectly controlling or controlled by or under direct or indirect common control with such specified Person. For the purposes of this definition, “control,” when used with respect to any specified Person means the power to
direct or cause the direction of the management and policies of such Person, directly or indirectly, whether through the ownership of voting securities, by contract or otherwise; and the terms “controlling” and “controlled” have
meanings correlative to the foregoing. Notwithstanding anything to the contrary herein, the determination of whether one Person is an “Affiliate” of another Person for purposes of this Indenture shall be made based on the
facts at the time such determination is made or required to be made, as the case may be, hereunder. 
 “Applicable
Procedures” means, with respect to a Depositary, as to any matter at any time, the policies and procedures of such Depositary, if any, that are applicable to such matter at such time. 

“Bid Solicitation Agent” means the Company or the Person appointed by the Company to solicit bids for the
Trading Price of the Notes in accordance with Section 14.01(b)(i). The Company shall initially act as the Bid Solicitation Agent. 

“Board of Directors” means the board of directors of the Company or a committee of such board duly authorized to act
for it hereunder. 
 “Board Resolution” means a copy of a resolution certified by the Secretary or an
Assistant Secretary of the Company to have been duly adopted by the Board of Directors, and to be in full force and effect on the date of such certification, and delivered to the Trustee. 

“Business Day” means any day other than a Saturday, a Sunday or a day on which the Federal Reserve Bank of New York is
authorized or required by law or executive order to close or be closed.  
 “Capital Stock” means, for any
entity, any and all shares, interests, rights to purchase, warrants, options, participations or other equivalents of or interests in (however designated) stock issued by that entity; provided that debt securities that are
convertible into or exchangeable for Capital Stock shall not constitute Capital Stock prior to their conversion or exchange, as the case may be. 

“Cash Settlement” shall have the meaning specified in Section 14.02(a). 

“Certain Distributions Notification” shall have the meaning specified in Section 14.01(b)(ii). 

“Certain Distributions Conversion Period End Date” shall have the meaning specified in Section 14.01(b)(ii).

 “Clause A Distribution” shall have the meaning specified in Section 14.04(c). 

“Clause B Distribution” shall have the meaning specified in Section 14.04(c). 

“Clause C Distribution” shall have the meaning specified in Section 14.04(c). 

“close of business” means 5:00 p.m. (New York City time). 

“Combination Settlement” shall have the meaning specified in Section 14.02(a). 

  
 2 

 “Commission” means the U.S. Securities and Exchange Commission. 

“Common Equity” of any Person means Capital Stock of such Person that is generally entitled (a) to vote in
the election of directors of such Person or (b) if such Person is not a corporation, to vote or otherwise participate in the selection of the governing body, partners, managers or others that will control the management or policies of such
Person. 
 “Common Stock” means the common stock of the Company, par value $0.01 per share, at the date of
this Indenture, subject to Section 14.07. 
 “Company” shall have the meaning specified in the first
paragraph of this Indenture, and subject to the provisions of Article 11, shall include its successors and assigns. 

“Company Order” means a written order of the Company, signed on behalf of the Company by an Officer. 

“Conversion Agent” shall have the meaning specified in Section 4.02. 

“Conversion Date” shall have the meaning specified in Section 14.02(c). 

“Conversion Obligation” shall have the meaning specified in Section 14.01(a). 

“Conversion Price” means as of any time, $1,000, divided by the Conversion Rate as of such time. 

“Conversion Rate” shall have the meaning specified in Section 14.01(a). 

“Corporate Event” shall have the meaning specified in Section 14.01(b)(iii). 

“Corporate Trust Office” means the corporate trust office of the Trustee at which at any time its corporate
trust business shall be administered, which office at the date hereof is located at 50 South Sixth Street, Suite 1290, Minneapolis, MN 55402, Attention: Zendesk, Inc. Account Manager, or such other address as the Trustee may designate from time to
time by notice to the Holders and the Company, or the principal corporate trust office of any successor trustee (or such other address as such successor trustee may designate from time to time by notice to the Holders and the Company). 

“Custodian” means the Trustee, as custodian for The Depository Trust Company, with respect to the Global Notes,
or any successor entity thereto. 
 “Daily Conversion Value” means, for each of the 40 consecutive Trading
Days during the Observation Period, 2.5% of the product of (a) the Conversion Rate on such Trading Day and (b) the Daily VWAP for such Trading Day. 

“Daily Measurement Value” means the Specified Dollar Amount (if any), divided by 40. 

“Daily Settlement Amount,” for each of the 40 consecutive Trading Days during the Observation Period, shall
consist of: 
 (a) cash in an amount equal to the lesser of (i) the Daily Measurement Value and (ii) the Daily
Conversion Value on such Trading Day; and 

  
 3 

 (b) if the Daily Conversion Value on such Trading Day exceeds the Daily
Measurement Value, a number of shares of Common Stock equal to (i) the difference between the Daily Conversion Value and the Daily Measurement Value, divided by (ii) the Daily VWAP for such Trading Day. 

“Daily VWAP” means, for each of the 40 consecutive Trading Days during the relevant Observation Period, the per
share volume-weighted average price as displayed under the heading “Bloomberg VWAP” on Bloomberg page “ZEN <equity> AQR” (or its equivalent successor if such page is not available) in respect of the period from the
scheduled open of trading until the scheduled close of trading of the primary trading session on such Trading Day (or if such volume-weighted average price is unavailable, the market value of one share of the Common Stock on such Trading Day
determined, using a volume-weighted average method, by a nationally recognized independent investment banking firm retained for this purpose by the Company). The “Daily VWAP” shall be determined without regard to after-hours
trading or any other trading outside of the regular trading session trading hours. 
 “Default” means any
event that is, or after notice or passage of time, or both, would be, an Event of Default. 
 “Defaulted Amounts” means any
amounts on any Note (including, without limitation, the Fundamental Change Repurchase Price, principal and interest) that are payable but are not punctually paid or duly provided for. 

“Depositary” means, with respect to each Global Note, the Person specified in Section 2.05(c) as the Depositary with
respect to such Notes, until a successor shall have been appointed and become such pursuant to the applicable provisions of this Indenture, and thereafter, “Depositary” shall mean or include such successor. 

“Distributed Property” shall have the meaning specified in Section 14.04(c). 

“Effective Date” shall have the meaning specified in Section 14.03(c), except that, as used in Section 14.04 and
Section 14.05, “Effective Date” means the first date on which shares of the Common Stock trade on the applicable exchange or in the applicable market, regular way, reflecting the relevant share split or share combination, as
applicable. 
 “Event of Default” shall have the meaning specified in Section 6.01. 

“Ex-Dividend Date” means the first date on which shares of the Common Stock trade on the applicable exchange or in the
applicable market, regular way, without the right to receive the issuance, dividend or distribution in question, from the Company or, if applicable, from the seller of Common Stock on such exchange or market (in the form of due bills or otherwise)
as determined by such exchange or market. 
 “Exchange Act” means the Securities Exchange Act of 1934, as amended, and the
rules and regulations promulgated thereunder. 
 “Exchange Election” shall have the meaning specified in Section 14.12.

 “Expiration Date” shall have the meaning specified in Section 14.04(e). 

“Form of Assignment and Transfer” means the “Form of Assignment and Transfer” attached as Attachment 3 to the Form
of Note attached hereto as Exhibit A. 

  
 4 

 “Form of Fundamental Change Repurchase Notice” means the “Form of
Fundamental Change Repurchase Notice” attached as Attachment 2 to the Form of Note attached hereto as Exhibit A. 
 “Form of
Note” means the “Form of Note” attached hereto as Exhibit A. 
 “Form of Notice of
Conversion” means the “Form of Notice of Conversion” attached as Attachment 1 to the Form of Note attached hereto as Exhibit A. 

“Fundamental Change” shall be deemed to have occurred at the time after the Notes are originally issued if any of the
following occurs: 
 (a) a “person” or “group” within the meaning of Section 13(d) of the Exchange
Act, other than the Company, its Wholly Owned Subsidiaries and the employee benefit plans of the Company and its Wholly Owned Subsidiaries, becomes the direct or indirect “beneficial owner,” as defined in Rule 13d-3 under the Exchange Act,
of the Common Stock representing more than 50% of the voting power of the Common Stock and files a Schedule TO (or any successor schedule, form or report) or any schedule, form or report under the Exchange Act disclosing such fact; 

(b) the consummation of (A) any recapitalization, reclassification or change of the Common Stock (other than changes
resulting from a subdivision, combination or a change in par value) as a result of which the Common Stock would be converted into, or exchanged for, stock, other securities, other property or assets; (B) any share exchange, consolidation or
merger of the Company pursuant to which the Common Stock will be converted into cash, securities or other property or assets; or (C) any sale, lease or other transfer in one transaction or a series of transactions of all or substantially all of
the consolidated assets of the Company and its Subsidiaries, taken as a whole, to any Person other than one of the Company’s Wholly Owned Subsidiaries; provided, however, that a transaction described in clause (A) or
(B) in which the holders of all classes of the Company’s Common Equity immediately prior to such transaction own, directly or indirectly, more than 50% of all classes of Common Equity of the continuing or surviving corporation or
transferee or the parent thereof immediately after such transaction in substantially the same proportions (relative to each other) as such ownership immediately prior to such transaction shall not be a Fundamental Change pursuant to this clause (b);

 (c) the Company’s stockholders approve any plan or proposal for the liquidation or dissolution of the Company; or

 (d) the Common Stock (or other Common Equity underlying the Notes) ceases to be listed or quoted on any of The New York
Stock Exchange, The NASDAQ Global Select Market or The NASDAQ Global Market (or any of their respective successors); 
 provided, however,
that a transaction or transactions described in clause (a) or clause (b) above shall not constitute a Fundamental Change, if at least 90% of the consideration received or to be received by the common stockholders of the Company, excluding
cash payments for fractional shares and cash payments made in respect of dissenters’ appraisal rights, in connection with such transaction or transactions consists of shares of common stock or other Common Equity that are listed or quoted on
any of The New York Stock Exchange, The NASDAQ Global Select Market or The NASDAQ Global Market (or any of their respective successors) or will be so listed or quoted when issued or exchanged in connection with such transaction or transactions and
as a result of such transaction or transactions such consideration becomes Reference Property for the Notes, excluding cash payments for fractional shares and cash payments made in respect of dissenters’ appraisal rights (subject to the
provisions of Section 14.02(a)). Any event, transaction or series of related transactions that constitute a Fundamental Change under both clause (a) and clause (b) above (determined without regard to the proviso in clause
(b) above) shall be deemed to be a Fundamental Change solely under clause (b) above. If any transaction in which the Common Stock is replaced by the securities of another entity occurs, following completion of any related Make-Whole
Fundamental Change Period (or, in the case of a transaction that would have been a Fundamental Change or a Make-Whole Fundamental Change but for the proviso immediately following clause (d) of this definition, following the effective date of
such transaction) references to the Company in this definition shall instead be references to such other entity. 

  
 5 

 “Fundamental Change Company Notice” shall have the meaning specified in Section
15.02(c). 
 “Fundamental Change Repurchase Date” shall have the meaning specified in Section 15.02(a). 

“Fundamental Change Repurchase Notice” shall have the meaning specified in Section 15.02(b)(i). 

“Fundamental Change Repurchase Price” shall have the meaning specified in Section 15.02(a). 

“Global Note” shall have the meaning specified in Section 2.05(b). 

“Holder,” as applied to any Note, or other similar terms (but excluding the term “beneficial holder”), means any
Person in whose name at the time a particular Note is registered on the Note Register. 
 “Indenture” means this instrument
as originally executed or, if amended or supplemented as herein provided, as so amended or supplemented. 
 “Initial
Purchasers” means Goldman Sachs & Co. LLC and Morgan Stanley & Co. LLC. 
 “Interest Payment
Date” means each March 15 and September 15 of each year, beginning on September 15, 2018. 
 “Last Reported
Sale Price” of the Common Stock (or other security for which a closing sale price must be determined) on any date means the closing sale price per share (or if no closing sale price is reported, the average of the bid and ask prices or, if
more than one in either case, the average of the average bid and the average ask prices) on that date as reported in composite transactions for the principal U.S. national or regional securities exchange on which the Common Stock (or such other
security) is traded. If the Common Stock (or such other security) is not listed for trading on a U.S. national or regional securities exchange on the relevant date, the “Last Reported Sale Price” shall be the last quoted bid price
per share for the Common Stock (or such other security) in the over-the-counter market on the relevant date as reported by OTC Markets Group Inc. or a similar organization. If the Common Stock (or such other security) is not so quoted, the
“Last Reported Sale Price” shall be the average of the mid-point of the last bid and ask prices per share for the Common Stock (or such other security) on the relevant date from each of at least three nationally recognized
independent investment banking firms selected by the Company for this purpose. The “Last Reported Sale Price” shall be determined without regard to after-hours trading or any other trading outside of regular trading session
hours. 

  
 6 

 “Make-Whole Fundamental Change” means any transaction or event that
constitutes a Fundamental Change (as defined above and determined after giving effect to any exceptions to or exclusions from such definition, but without regard to the proviso in clause (b) of the definition thereof).

 “Make-Whole Fundamental Change Period” shall have the meaning specified in Section 14.03(a). 

“Market Disruption Event” means, for the purposes of determining amounts due upon conversion (a) a failure by the
primary U.S. national or regional securities exchange or market on which the Common Stock is listed or admitted for trading to open for trading during its regular trading session or (b) the occurrence or existence prior to 1:00 p.m., New York
City time, on any Scheduled Trading Day for the Common Stock for more than one half-hour period in the aggregate during regular trading hours of any suspension or limitation imposed on trading (by reason of movements in price exceeding limits
permitted by the relevant stock exchange or otherwise) in the Common Stock or in any options contracts or futures contracts relating to the Common Stock. 

“Maturity Date” means March 15, 2023. 

“Measurement Period” shall have the meaning specified in Section 14.01(b)(i). 

“Merger Event” has the meaning specified in Section 14.07(a). 

“Note” or “Notes” shall have the meaning specified in the first paragraph of the recitals of this Indenture.

 “Note Register” shall have the meaning specified in Section 2.05(a). 

“Note Registrar” shall have the meaning specified in Section 2.05(a). 

“Notice of Conversion” shall have the meaning specified in Section 14.02(b). 

“Observation Period” with respect to any Note surrendered for conversion means: (i) if the relevant Conversion Date
occurs prior to December 15, 2022, the 40 consecutive Trading Day period beginning on, and including, the second Trading Day immediately succeeding such Conversion Date; and (ii) if the relevant Conversion Date occurs on or after
December 15, 2022, the 40 consecutive Trading Days beginning on, and including, the 41st Scheduled Trading Day immediately preceding the Maturity Date. 

“Offering Memorandum” means the preliminary offering memorandum dated March 14, 2018, as supplemented by the related
pricing term sheet dated March 15, 2018, relating to the offering and sale of the Notes. 
 “Officer” means, with
respect to the Company, the President, the Chief Executive Officer, the Chief Financial Officer, the Chief Legal Officer, the Treasurer, the Secretary, any assistant Treasurer, any assistant Secretary, any Executive or Senior Vice President or any
Vice President (whether or not designated by a number or numbers or word or words added before or after the title “Vice President”). 

  
 7 

 “Officer’s Certificate,” when used with respect to the Company, means a
certificate that is delivered to the Trustee and that is signed on behalf of the Company by an Officer of the Company that meets the requirements of Section 17.05. 

“open of business” means 9:00 a.m. (New York City time). 

“Opinion of Counsel” means an opinion in writing signed by legal counsel, who may be an employee of or counsel to the
Company, that is delivered to the Trustee. 
 “outstanding,” when used with reference to Notes, shall, subject to
the provisions of Section 8.04, mean, as of any particular time, all Notes authenticated and delivered by the Trustee under this Indenture, except: 

(a) Notes theretofore canceled by the Trustee or accepted by the Trustee for cancellation; 

(b) Notes, or portions thereof, that have become due and payable and in respect of which monies in the necessary amount shall
have been deposited in trust with the Trustee or with any Paying Agent (other than the Company) or shall have been set aside and segregated in trust by the Company (if the Company shall act as its own Paying Agent); 

(c) Notes that have been paid pursuant to Section 2.06 or Notes in lieu of which, or in substitution for which, other
Notes shall have been authenticated and delivered pursuant to the terms of Section 2.06 unless proof satisfactory to the Trustee is presented that any such Notes are held by protected purchasers in due course; 

(d) Notes surrendered for purchase in accordance with Article 15 for which Paying Agent holds money sufficient to pay the
Fundamental Change Repurchase Price, in accordance with Section 15.04(b); 
 (e) Notes converted pursuant to Article 14
and required to be cancelled pursuant to Section 2.08; and 
 (f) Notes repurchased by the Company pursuant to the last
sentence of Section 2.10 after the Company surrenders them to the Trustee for cancellation in accordance with Section 2.08. 

“Paying Agent” shall have the meaning specified in Section 4.02. 

“Person” means an individual, a corporation, a limited liability company, an association, a partnership, a joint venture, a
joint stock company, a trust, an unincorporated organization or a government or an agency or a political subdivision thereof. 

“Physical Notes” means permanent certificated Notes in registered form issued in denominations of $1,000 principal amount and
integral multiples thereof. 
 “Physical Settlement” shall have the meaning specified in Section 14.02(a). 

“Predecessor Note” of any particular Note means every previous Note evidencing all or a portion of the same debt as that
evidenced by such particular Note; and, for the purposes of this definition, any Note authenticated and delivered under Section 2.06 in lieu of or in exchange for a mutilated, lost, destroyed or stolen Note shall be deemed to evidence the same
debt as the mutilated, lost, destroyed or stolen Note that it replaces. 

  
 8 

 “Purchase Agreement” means that certain Purchase Agreement, dated as of
March 15, 2018, among the Company and the Initial Purchasers. 
 “Record Date” means, with respect to any
dividend, distribution or other transaction or event in which the holders of Common Stock (or other applicable security) have the right to receive any cash, securities or other property or in which the Common Stock (or such other security) is
exchanged for or converted into any combination of cash, securities or other property, the date fixed for determination of holders of the Common Stock (or such other security) entitled to receive such cash, securities or other property (whether such
date is fixed by the Board of Directors, by statute, by contract or otherwise). 
 “Reference Property” shall
have the meaning specified in Section 14.07(a). 
 “Regular Record Date,” with respect to any Interest
Payment Date, means the March 1 or September 1 (whether or not such day is a Business Day) immediately preceding the applicable March 15 or September 15 Interest Payment Date, respectively. 

“Resale Restriction Termination Date” shall have the meaning specified in Section 2.05(c). 

“Responsible Officer” means, when used with respect to the Trustee, any officer within the Corporate Trust Office of
the Trustee, including any vice president, assistant vice president, assistant secretary, assistant treasurer, trust officer or any other officer of the Trustee who customarily performs functions similar to those performed by the Persons who at the
time shall be such officers, respectively, or to whom any corporate trust matter is referred because of such person’s knowledge of and familiarity with the particular subject and, in each case, who shall have direct responsibility for the
administration of this Indenture. 
 “Restricted Securities” shall have the meaning specified in Section
2.05(c). 
 “Restrictive Legend” shall have the meaning specified in Section 2.05(c). 

“Rule 144” means Rule 144 as promulgated under the Securities Act. 

“Rule 144A” means Rule 144A as promulgated under the Securities Act. 

“Scheduled Trading Day” means a day that is scheduled to be a Trading Day on the principal U.S. national or regional
securities exchange or market on which the Common Stock is listed or admitted for trading. If the Common Stock is not so listed or admitted for trading, “Scheduled Trading Day” means a Business Day. 

“Securities Act” means the Securities Act of 1933, as amended, and the rules and regulations promulgated
thereunder. 
 “Settlement Amount” has the meaning specified in Section 14.02(a)(iv). 

“Settlement Method” means, with respect to any conversion of Notes, Physical Settlement, Cash Settlement or
Combination Settlement, as elected (or deemed to have been elected) by the Company. 

  
 9 

 “Settlement Notice” has the meaning specified in Section
14.02(a)(iii). 
 “Significant Subsidiary” means a Subsidiary of the Company that meets the definition of
“significant subsidiary” in Article 1, Rule 1-02 of Regulation S-X under the Exchange Act as in effect on the date of this Indenture; provided that, in the case of a Subsidiary of the Company that meets the criteria of
clause (3) of such definition of “significant subsidiary” but not clause (1) or (2) thereof, such Subsidiary shall not be deemed to be a Significant Subsidiary unless such Subsidiary’s income (or loss) from continuing
operations before income taxes, extraordinary items and cumulative effect of a change in accounting principle exclusive of amounts attributable to any non-controlling interests for the last completed fiscal year prior to the date of such
determination exceeds $20.0 million. 
 “Specified Dollar Amount” means the maximum cash amount per $1,000
principal amount of Notes to be received upon conversion as specified in the Settlement Notice related to any converted Notes. 

“Spin-Off” shall have the meaning specified in Section 14.04(c). 

“Stock Price” shall have the meaning specified in Section 14.03(c). 

“Subsidiary” means, with respect to any Person, any corporation, association, partnership or other business entity of
which more than 50% of the total voting power of shares of Capital Stock or other interests (including partnership interests) entitled (without regard to the occurrence of any contingency) to vote in the election of directors, managers, general
partners or trustees thereof is at the time owned or controlled, directly or indirectly, by (i) such Person; (ii) such Person and one or more Subsidiaries of such Person; or (iii) one or more Subsidiaries of such Person. 

“Successor Company” shall have the meaning specified in Section 11.01(a). 

“Trading Day” means a day on which (i) trading in the Common Stock (or other security for which a closing sale
price must be determined) generally occurs on The New York Stock Exchange or, if the Common Stock (or such other security) is not then listed on The New York Stock Exchange, on the principal other U.S. national or regional securities exchange on
which the Common Stock (or such other security) is then listed or, if the Common Stock (or such other security) is not then listed on a U.S. national or regional securities exchange, on the principal other market on which the Common Stock (or such
other security) is then traded and (ii) a Last Reported Sale Price for the Common Stock (or closing sale price for such other security) is available on such securities exchange or market; provided that if the Common Stock
(or such other security) is not so listed or traded, “Trading Day” means a Business Day; and provided, further, that for purposes of determining amounts due upon conversion only,
“Trading Day” means a day on which (x) there is no Market Disruption Event and (y) trading in the Common Stock generally occurs on The New York Stock Exchange or, if the Common Stock is not then listed on The New York
Stock Exchange, on the principal other U.S. national or regional securities exchange on which the Common Stock is then listed or, if the Common Stock is not then listed on a U.S. national or regional securities exchange, on the principal other
market on which the Common Stock is then listed or admitted for trading, except that if the Common Stock is not so listed or admitted for trading, “Trading Day” means a Business Day. 

  
 10 

 “Trading Price” per $1,000 principal amount of the Notes on any date of
determination means the average of the secondary market bid quotations obtained by the Bid Solicitation Agent for $5,000,000 principal amount of Notes at approximately 3:30 p.m., New York City time, on such determination date from three independent
nationally recognized securities dealers the Company selects for this purpose; provided that if three such bids cannot reasonably be obtained by the Bid Solicitation Agent but two such bids are obtained, then the average of the
two bids shall be used, and if only one such bid can reasonably be obtained by the Bid Solicitation Agent, that one bid shall be used. If the Bid Solicitation Agent cannot reasonably obtain at least one bid for $5,000,000 principal amount of Notes
from a nationally recognized securities dealer on any determination date, then the Trading Price per $1,000 principal amount of Notes on such determination date shall be deemed to be less than 98% of the product of the Last Reported Sale Price of
the Common Stock and the Conversion Rate. 
 “Trading Price Condition” shall have the meaning specified in
Section 14.01(b)(i). 
 “transfer” shall have the meaning specified in Section 2.05(c). 

“Trigger Event” shall have the meaning specified in Section 14.04(c). 

“Trust Indenture Act” means the Trust Indenture Act of 1939, as amended, as it was in force at the date of execution
of this Indenture; provided, however, that in the event the Trust Indenture Act of 1939 is amended after the date hereof, the term “Trust Indenture Act” shall mean, to the extent required by such
amendment, the Trust Indenture Act of 1939, as so amended. 
 “Trustee” means the Person named as the
“Trustee” in the first paragraph of this Indenture until a successor trustee shall have become such pursuant to the applicable provisions of this Indenture, and thereafter “Trustee” shall mean or include each Person
who is then a Trustee hereunder. 
 “unit of Reference Property” shall have the meaning specified in Section
14.07(a). 
 “Valuation Period” shall have the meaning specified in Section 14.04(c). 

“Wholly Owned Subsidiary” means, with respect to any Person, any Subsidiary of such Person, except that, solely for
purposes of this definition, the reference to “more than 50%” in the definition of “Subsidiary” shall be deemed replaced by a reference to “100%”. 

Section 1.02. References to Interest. Unless the context otherwise requires, any reference to interest on, or in respect
of, any Note in this Indenture shall be deemed to include Additional Interest if, in such context, Additional Interest is, was or would be payable pursuant to any of Section 4.06(d), Section 4.06(e) and Section 6.03. Unless the
context otherwise requires, any express mention of Additional Interest in any provision hereof shall not be construed as excluding Additional Interest in those provisions hereof where such express mention is not made. 

ARTICLE 2 
 ISSUE,
DESCRIPTION, EXECUTION, REGISTRATION AND EXCHANGE OF NOTES 

Section 2.01. Designation and Amount. The Notes shall be designated as the “0.25% Convertible Senior Notes due
2023.” The aggregate principal amount of Notes that may be authenticated and delivered under this Indenture is initially limited to $500,000,000 (as increased by an amount equal to the aggregate principal amount of any Additional Notes
purchased by the Initial Purchasers pursuant to the exercise of their option to purchase additional Notes as set forth in the Purchase Agreement), subject to Section 2.10 and except for Notes authenticated and delivered upon registration or
transfer of, or in exchange for, or in lieu of other Notes to the extent expressly permitted hereunder. 

  
 11 

 Section 2.02. Form of Notes. The Notes and the Trustee’s certificate of
authentication to be borne by such Notes shall be substantially in the respective forms set forth in Exhibit A, the terms and provisions of which shall constitute, and are hereby expressly incorporated in and made a part of this Indenture. To the
extent applicable, the Company and the Trustee, by their execution and delivery of this Indenture, expressly agree to such terms and provisions and to be bound thereby. 

Any Global Note may be endorsed with or have incorporated in the text thereof such legends or recitals or changes not inconsistent with the
provisions of this Indenture as may be required by the Custodian or the Depositary, or as may be required to comply with any applicable law or any regulation thereunder or with the rules and regulations of any securities exchange or automated
quotation system upon which the Notes may be listed or traded or designated for issuance or to conform with any usage with respect thereto, or to indicate any special limitations or restrictions to which any particular Notes are subject. 

Any of the Notes may have such letters, numbers or other marks of identification and such notations, legends or endorsements as the Officer
executing the same may approve (execution thereof to be conclusive evidence of such approval) and as are not inconsistent with the provisions of this Indenture, or as may be required to comply with any law or with any rule or regulation made
pursuant thereto or with any rule or regulation of any securities exchange or automated quotation system on which the Notes may be listed or designated for issuance, or to conform to usage or to indicate any special limitations or restrictions to
which any particular Notes are subject. 
 Each Global Note shall represent such principal amount of the outstanding Notes as shall be
specified therein and shall provide that it shall represent the aggregate principal amount of outstanding Notes from time to time endorsed thereon and that the aggregate principal amount of outstanding Notes represented thereby may from time to time
be increased or reduced to reflect repurchases, cancellations, conversions, transfers or exchanges permitted hereby. Any endorsement of a Global Note to reflect the amount of any increase or decrease in the amount of outstanding Notes represented
thereby shall be made by the Trustee or the Custodian, at the direction of the Trustee, in such manner and upon instructions given by the Holder of such Notes in accordance with this Indenture. Payment of principal (including the Fundamental Change
Repurchase Price, if applicable) of, and accrued and unpaid interest on, a Global Note shall be made to the Holder of such Note on the date of payment, unless a record date or other means of determining Holders eligible to receive payment is
provided for herein. 
 Section 2.03. Date and Denomination of Notes; Payments of Interest and Defaulted Amounts.
(a) The Notes shall be issuable in registered form without coupons in denominations of $1,000 principal amount and integral multiples thereof. Each Note shall be dated the date of its authentication and shall bear interest from the date
specified on the face of such Note. Accrued interest on the Notes shall be computed on the basis of a 360-day year composed of twelve 30-day months and, for partial months, on the basis of the number of days actually elapsed in a 30-day month.

  
 12 

 (b) The Person in whose name any Note (or its Predecessor Note) is registered on the Note
Register at the close of business on any Regular Record Date with respect to any Interest Payment Date shall be entitled to receive the interest payable on such Interest Payment Date. The principal amount of any Note (x) in the case of any
Physical Note, shall be payable at the office or agency of the Company maintained by the Company for such purposes in the United States, which shall initially be the Corporate Trust Office and (y) in the case of any Global Note, shall be
payable by wire transfer of immediately available funds to the account of the Depositary or its nominee. The Company shall pay, or cause the Paying Agent to pay, interest (i) on any Physical Notes (A) to Holders holding Physical Notes
having an aggregate principal amount of $5,000,000 or less, by check mailed to the Holders of these Notes at their address as it appears in the Note Register and (B) to Holders holding Physical Notes having an aggregate principal amount of more
than $5,000,000, either by check mailed to each Holder or, upon application by such a Holder to the Note Registrar not later than the relevant Regular Record Date, by wire transfer in immediately available funds to that Holder’s account within
the United States, which application shall remain in effect until the Holder notifies, in writing, the Note Registrar to the contrary or (ii) on any Global Note by wire transfer of immediately available funds to the account of the Depositary or
its nominee. 
 (c) Any Defaulted Amounts shall forthwith cease to be payable to the Holder on the relevant payment date but shall accrue
interest per annum at the rate borne by the Notes, subject to the enforceability thereof under applicable law, from, and including, such relevant payment date, and such Defaulted Amounts together with such interest thereon shall be paid by the
Company, at its election in each case, as provided in clause (i) or (ii) below: 
 (i) The Company may elect to
make payment of any Defaulted Amounts to the Persons in whose names the Notes (or their respective Predecessor Notes) are registered at the close of business on a special record date for the payment of such Defaulted Amounts, which shall be fixed in
the following manner. The Company shall notify the Trustee in writing of the amount of the Defaulted Amounts proposed to be paid on each Note and the date of the proposed payment (which shall be not less than 25 days after the receipt by the Trustee
of such notice, unless the Trustee shall consent to an earlier date), and at the same time the Company shall deposit with the Trustee an amount of money equal to the aggregate amount to be paid in respect of such Defaulted Amounts or shall make
arrangements satisfactory to the Trustee for such deposit on or prior to the date of the proposed payment, such money when deposited to be held in trust for the benefit of the Persons entitled to such Defaulted Amounts as in this clause provided.
Thereupon the Company shall fix a special record date for the payment of such Defaulted Amounts which shall be not more than 15 days and not less than 10 days prior to the date of the proposed payment, and not less than 10 days after the receipt by
the Trustee of the notice of the proposed payment. The Company shall promptly notify the Trustee of such special record date and the Trustee, in the name and at the expense of the Company, shall cause notice of the proposed payment of such Defaulted
Amounts and the special record date therefor to be delivered to each Holder not less than 10 days prior to such special record date. Notice of the proposed payment of such Defaulted Amounts and the special record date therefor having been so
delivered, such Defaulted Amounts shall be paid to the Persons in whose names the Notes (or their respective Predecessor Notes) are registered at the close of business on such special record date and shall no longer be payable pursuant to the
following clause (ii) of this Section 2.03(c). 
 (ii) The Company may make payment of any Defaulted Amounts in any
other lawful manner not inconsistent with the requirements of any securities exchange or automated quotation system on which the Notes may be listed or designated for issuance, and upon such notice as may be required by such exchange or automated
quotation system, if, after notice given by the Company to the Trustee of the proposed payment pursuant to this clause, such manner of payment shall be deemed practicable by the Trustee. 

  
 13 

 Section 2.04. Execution, Authentication and Delivery of Notes. The Notes shall
be signed in the name and on behalf of the Company by the manual or facsimile signature of one of its Officers. 
 At any time and
from time to time after the execution and delivery of this Indenture, the Company may deliver Notes executed by the Company to the Trustee for authentication, together with a Company Order for the authentication and delivery of such Notes, and the
Trustee in accordance with such Company Order shall authenticate and deliver such Notes, without any further action by the Company hereunder. 

Only such Notes as shall bear thereon a certificate of authentication substantially in the form set forth on the Form of Note attached as
Exhibit A hereto, executed manually by an authorized officer of the Trustee (or an authenticating agent appointed by the Trustee as provided by Section 17.10), shall be entitled to the benefits of this Indenture or be valid or obligatory for
any purpose. Such certificate by the Trustee (or such an authenticating agent) upon any Note executed by the Company shall be conclusive evidence that the Note so authenticated has been duly authenticated and delivered hereunder and that the Holder
is entitled to the benefits of this Indenture. 
 In case any Officer of the Company who shall have signed any of the Notes shall cease to
be such Officer before the Notes so signed shall have been authenticated and delivered by the Trustee, or disposed of by the Company, such Notes nevertheless may be authenticated and delivered or disposed of as though the person who signed such
Notes had not ceased to be such Officer of the Company; and any Note may be signed on behalf of the Company by such persons as, at the actual date of the execution of such Note, shall be the Officers of the Company, although at the date of the
execution of this Indenture any such person was not such an Officer. 
 Section 2.05. Exchange and Registration of Transfer
of Notes; Restrictions on Transfer; Depositary. (a) The Company shall cause to be kept at the Corporate Trust Office a register (the register maintained in such office or in any other office or agency of the Company designated pursuant to
Section 4.02, the “Note Register”) in which, subject to such reasonable regulations as it may prescribe, the Company shall provide for the registration of Notes and of transfers of Notes. Such register shall be in
written form or in any form capable of being converted into written form within a reasonable period of time. The Trustee is hereby initially appointed the “Note Registrar” for the purpose of registering Notes and
transfers of Notes as herein provided. The Company may appoint one or more co-Note Registrars in accordance with Section 4.02. 

Upon surrender for registration of transfer of any Note to the Note Registrar or any co-Note Registrar, and satisfaction of the requirements
for such transfer set forth in this Section 2.05, the Company shall execute, and the Trustee shall authenticate and deliver, in the name of the designated transferee or transferees, one or more new Notes of any authorized denominations and of a
like aggregate principal amount and bearing such legends as may be required by this Indenture. 
 Notes may be exchanged for other Notes of
any authorized denominations and of a like aggregate principal amount, upon surrender of the Notes to be exchanged at any such office or agency maintained by the Company pursuant to Section 4.02. Whenever any Notes are so surrendered for
exchange, the Company shall execute, and the Trustee shall authenticate and deliver, the Notes that the Holder making the exchange is entitled to receive, bearing registration numbers not contemporaneously outstanding. 

  
 14 

 All Notes presented or surrendered for registration of transfer or for exchange, repurchase or
conversion shall (if so required by the Company, the Trustee, the Note Registrar or any co-Note Registrar) be duly endorsed, or be accompanied by a written instrument or instruments of transfer in form satisfactory to the Note Registrar and duly
executed, by the Holder thereof or its attorney-in-fact duly authorized in writing. 
 No service charge shall be imposed by the Company,
the Trustee, the Note Registrar, any co-Note Registrar or the Paying Agent for any exchange or registration of transfer of Notes, but the Company may require a Holder to pay a sum sufficient to cover any documentary, stamp or similar issue or
transfer tax required in connection therewith as a result of the name of the Holder of new Notes issued upon such exchange or registration of transfer being different from the name of the Holder of the old Notes surrendered for exchange or
registration of transfer. 
 None of the Company, the Trustee, the Note Registrar or any co-Note Registrar shall be required to exchange or
register a transfer of (i) any Notes surrendered for conversion or, if a portion of any Note is surrendered for conversion, such portion thereof surrendered for conversion or (ii) any Notes, or a portion of any Note, surrendered for
repurchase (and not withdrawn) in accordance with Article 15. 
 All Notes issued upon any registration of transfer or exchange of Notes in
accordance with this Indenture shall be the valid obligations of the Company, evidencing the same debt, and entitled to the same benefits under this Indenture as the Notes surrendered upon such registration of transfer or exchange. 

(b) So long as the Notes are eligible for book-entry settlement with the Depositary, unless otherwise required by law, subject to the
fourth paragraph from the end of Section 2.05(c) all Notes shall be represented by one or more Notes in global form (each, a “Global Note”) registered in the name of the Depositary or the nominee of the Depositary. The transfer
and exchange of beneficial interests in a Global Note that does not involve the issuance of a Physical Note shall be effected through the Depositary (but not the Trustee or the Custodian) in accordance with this Indenture (including the restrictions
on transfer set forth herein) and the Applicable Procedures. 
 (c) Every Note that bears or is required under this
Section 2.05(c) to bear the legend set forth in this Section 2.05(c) (together with any Common Stock issued upon conversion of the Notes that is required to bear the legend set forth in Section 2.05(d), collectively, the
“Restricted Securities”) shall be subject to the restrictions on transfer set forth in this Section 2.05(c) (including the legend set forth below), unless such restrictions on transfer shall be eliminated or otherwise waived by
written consent of the Company, and the Holder of each such Restricted Security, by such Holder’s acceptance thereof, agrees to be bound by all such restrictions on transfer. As used in this Section 2.05(c) and Section 2.05(d), the
term “transfer” encompasses any sale, pledge, transfer or other disposition whatsoever of any Restricted Security. 

Until the date (the “Resale Restriction Termination Date”) that is the later of (1) the date that is one year
after the last date of original issuance of the Notes, or such shorter period of time as permitted by Rule 144 or any successor provision thereto, and (2) such later date, if any, as may be required by applicable law, any certificate evidencing
such Note (and all securities issued in exchange therefor or substitution thereof, other than Common Stock, if any, issued upon conversion thereof, which shall bear the legend set forth in Section 2.05(d), if applicable) shall bear a legend in
substantially the following form (the “Restrictive Legend”) (unless such Notes have been transferred pursuant to a registration statement that has become or been declared effective under the Securities Act and that continues to be
effective at the time of such transfer, or sold pursuant to the exemption from registration provided by Rule 144 or any similar provision then in force under the Securities Act, or unless otherwise agreed by the Company in writing, with notice
thereof to the Trustee): 

  
 15 

 THIS SECURITY AND THE COMMON STOCK, IF ANY, ISSUABLE UPON CONVERSION OF THIS SECURITY HAVE
NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND MAY NOT BE OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED EXCEPT IN ACCORDANCE WITH THE FOLLOWING SENTENCE. BY ITS ACQUISITION HEREOF OR
OF A BENEFICIAL INTEREST HEREIN, THE ACQUIRER: 
 (1) REPRESENTS THAT IT AND ANY ACCOUNT FOR WHICH IT IS ACTING IS A
“QUALIFIED INSTITUTIONAL BUYER” (WITHIN THE MEANING OF RULE 144A UNDER THE SECURITIES ACT) AND THAT IT EXERCISES SOLE INVESTMENT DISCRETION WITH RESPECT TO EACH SUCH ACCOUNT, AND 

(2) AGREES FOR THE BENEFIT OF ZENDESK, INC. (THE “COMPANY”) THAT IT WILL NOT OFFER, SELL, PLEDGE OR OTHERWISE
TRANSFER THIS SECURITY OR ANY BENEFICIAL INTEREST HEREIN PRIOR TO THE DATE THAT IS THE LATER OF (X) ONE YEAR AFTER THE LAST ORIGINAL ISSUE DATE HEREOF OR SUCH SHORTER PERIOD OF TIME AS PERMITTED BY RULE 144 UNDER THE SECURITIES ACT OR ANY
SUCCESSOR PROVISION THERETO AND (Y) SUCH LATER DATE, IF ANY, AS MAY BE REQUIRED BY APPLICABLE LAW, EXCEPT: 
 (A) TO THE
COMPANY OR ANY SUBSIDIARY THEREOF, OR 
 (B) PURSUANT TO A REGISTRATION STATEMENT THAT HAS BECOME EFFECTIVE UNDER THE
SECURITIES ACT AND IS EFFECTIVE AT THE TIME OF SUCH TRANSFER, OR 
 (C) TO A PERSON THAT YOU REASONABLY BELIEVE TO BE A
QUALIFIED INSTITUTIONAL BUYER IN COMPLIANCE WITH RULE 144A UNDER THE SECURITIES ACT, OR 
 (D) PURSUANT TO AN EXEMPTION FROM
REGISTRATION PROVIDED BY RULE 144 UNDER THE SECURITIES ACT OR ANY OTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT. 

PRIOR TO THE REGISTRATION OF ANY TRANSFER IN ACCORDANCE WITH CLAUSE (2)(D) ABOVE, THE COMPANY AND THE TRUSTEE RESERVE THE RIGHT TO
REQUIRE THE DELIVERY OF SUCH LEGAL OPINIONS, CERTIFICATIONS OR OTHER EVIDENCE AS MAY REASONABLY BE REQUIRED IN ORDER TO DETERMINE THAT THE PROPOSED TRANSFER IS BEING MADE IN COMPLIANCE WITH THE SECURITIES ACT AND APPLICABLE STATE SECURITIES LAWS. NO
REPRESENTATION IS MADE AS TO THE AVAILABILITY OF ANY EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT. 
 NO AFFILIATE (AS
DEFINED IN RULE 144 UNDER THE SECURITIES ACT) OF THE COMPANY OR PERSON THAT HAS BEEN AN AFFILIATE (AS DEFINED IN RULE 144 UNDER THE SECURITIES ACT) OF THE COMPANY DURING THE IMMEDIATELY PRECEDING THREE MONTHS MAY PURCHASE, OTHERWISE ACQUIRE OR HOLD
THIS SECURITY OR A BENEFICIAL INTEREST HEREIN. 

  
 16 

 No transfer of any Note prior to the Resale Restriction Termination Date will be registered by
the Note Registrar unless the applicable box on the Form of Assignment and Transfer has been checked. 
 Any Note (or security issued in
exchange or substitution therefor) (i) as to which such restrictions on transfer shall have expired in accordance with their terms, (ii) that has been transferred pursuant to a registration statement that has become effective or been
declared effective under the Securities Act and that continues to be effective at the time of such transfer or (iii) that has been sold pursuant to the exemption from registration provided by Rule 144 or any similar provision then in force
under the Securities Act, may, upon surrender of such Note for exchange to the Note Registrar in accordance with the provisions of this Section 2.05, be exchanged for a new Note or Notes, of like tenor and aggregate principal amount, which
shall not bear the Restrictive Legend required by this Section 2.05(c) and shall not be assigned (or deemed assigned) a restricted CUSIP number. The Restrictive Legend set forth above and affixed on any Note will be deemed, in accordance with
the terms of the certificate representing such Note, to be removed therefrom upon the Company’s delivery to the Trustee of written notice to such effect, without further action by the Company, the Trustee, the Holder(s) thereof or any other
Person; at such time, such Note will be deemed to be assigned an unrestricted CUSIP number as provided in the certificate representing such Note, it being understood that the Depositary of any Global Note may require a mandatory exchange or other
process to cause such Global Note to be identified by an unrestricted CUSIP number in the facilities of such Depositary. Without limiting the generality of any other provision of this Indenture, the Trustee will be entitled to receive an instruction
letter from the Company before taking any action with respect to effecting any such mandatory exchange or other process. The Company and the Trustee reserve the right to require the delivery of such legal opinions, certifications or other evidence
as may reasonably be required in order to determine that any proposed transfer of any Note is being made in compliance with the Securities Act and applicable state securities laws. 

The Company shall be entitled to instruct the Custodian in writing to so surrender any Global Note as to which any of the conditions set forth
in clause (i) through (iii) of the immediately preceding sentence have been satisfied, and, upon such instruction, the Custodian shall so surrender such Global Note for exchange; and any new Global Note so exchanged therefor shall not bear
the Restrictive Legend specified in this Section 2.05(c) and shall not be assigned (or deemed assigned) a restricted CUSIP number. The Company shall promptly notify the Trustee upon the occurrence of the Resale Restriction Termination Date and
promptly after a registration statement, if any, with respect to the Notes or any Common Stock issued upon conversion of the Notes has been declared effective under the Securities Act. 

Notwithstanding any other provisions of this Indenture (other than the provisions set forth in this Section 2.05(c)), a Global Note may
not be transferred as a whole or in part except (i) by the Depositary to a nominee of the Depositary or by a nominee of the Depositary to the Depositary or another nominee of the Depositary or by the Depositary or any such nominee to a
successor Depositary or a nominee of such successor Depositary and (ii) for exchange of a Global Note or a portion thereof for one or more Physical Notes in accordance with the second immediately succeeding paragraph. 

The Depositary shall be a clearing agency registered under the Exchange Act. The Company initially appoints The Depository Trust Company to
act as Depositary with respect to each Global Note. Initially, each Global Note shall be issued to the Depositary, registered in the name of Cede & Co., as the nominee of the Depositary, and deposited with the Trustee as custodian for
Cede & Co. 

  
 17 

 If (i) the Depositary notifies the Company at any time that the Depositary is unwilling or
unable to continue as depositary for the Global Notes and a successor depositary is not appointed within 90 days, (ii) the Depositary ceases to be registered as a clearing agency under the Exchange Act and a successor depositary is not
appointed within 90 days or (iii) an Event of Default with respect to the Notes has occurred and is continuing and a beneficial owner of any Note requests that its beneficial interest therein be issued as a Physical Note, the Company shall
execute, and the Trustee, upon receipt of an Officer’s Certificate and a Company Order for the authentication and delivery of Notes, shall authenticate and deliver (x) in the case of clause (iii), a Physical Note to such beneficial owner
in a principal amount equal to the principal amount of such Note corresponding to such beneficial owner’s beneficial interest and (y) in the case of clause (i) or (ii), Physical Notes to each beneficial owner of the related Global
Notes (or a portion thereof) in an aggregate principal amount equal to the aggregate principal amount of such Global Notes in exchange for such Global Notes, and upon delivery of the Global Notes to the Trustee such Global Notes shall be canceled.

 Physical Notes issued in exchange for all or a part of the Global Note pursuant to this Section 2.05(c) shall be registered in such
names and in such authorized denominations as the Depositary, pursuant to instructions from its direct or indirect participants or otherwise, or, in the case of clause (iii) of the immediately preceding paragraph, the relevant beneficial owner,
shall instruct the Trustee. Upon execution and authentication, the Trustee shall deliver such Physical Notes to the Persons in whose names such Physical Notes are so registered. 

At such time as all interests in a Global Note have been converted, canceled, repurchased or transferred, such Global Note shall be, upon
receipt thereof, canceled by the Trustee in accordance with standing procedures and existing instructions between the Depositary and the Custodian. At any time prior to such cancellation, if any interest in a Global Note is exchanged for Physical
Notes, converted, canceled, repurchased or transferred to a transferee who receives Physical Notes therefor or any Physical Note is exchanged or transferred for part of such Global Note, the principal amount of such Global Note shall, in accordance
with the standing procedures and instructions existing between the Depositary and the Custodian, be appropriately reduced or increased, as the case may be, and an endorsement shall be made on such Global Note, by the Trustee or the Custodian, at the
direction of the Trustee, to reflect such reduction or increase. 
 None of the Company, the Trustee or any agent of the Company or the
Trustee shall have any responsibility or liability for any aspect of the records relating to or payments made on account of beneficial ownership interests of a Global Note or maintaining, supervising or reviewing any records relating to such
beneficial ownership interests. 
 Neither the Company nor the Trustee shall have any responsibility or liability for any act or omission of
the Depositary. All notices and communications to be given to the Holders and all payments to be made to Holders in respect of the Notes shall be given or made only to, or upon the order of, the registered Holder(s) (which shall be the Depositary or
its nominee in the case of a Global Note). 
 The rights of beneficial owners in any Global Note shall be exercised only through the
Depositary subject to the Applicable Procedures of the Depositary. The Trustee may rely and shall be fully protected in relying upon information furnished by the Depositary with respect to its members, participants and any beneficial owners. 

  
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 (d) Until the Resale Restriction Termination Date, any stock certificate representing Common
Stock issued upon conversion of a Note shall bear a legend in substantially the following form (unless such Common Stock has been transferred pursuant to a registration statement that has become or been declared effective under the Securities Act
and that continues to be effective at the time of such transfer, or pursuant to the exemption from registration provided by Rule 144 or any similar provision then in force under the Securities Act, or such Common Stock has been issued upon
conversion of a Note that has transferred pursuant to a registration statement that has become or been declared effective under the Securities Act and that continues to be effective at the time of such transfer, or pursuant to the exemption from
registration provided by Rule 144 or any similar provision then in force under the Securities Act, or unless otherwise agreed by the Company with written notice thereof to the Trustee and any transfer agent for the Common Stock): 

THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND MAY NOT
BE OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED EXCEPT IN ACCORDANCE WITH THE FOLLOWING SENTENCE. BY ITS ACQUISITION HEREOF OR OF A BENEFICIAL INTEREST HEREIN, THE ACQUIRER: 

(1) REPRESENTS THAT IT AND ANY ACCOUNT FOR WHICH IT IS ACTING IS A “QUALIFIED INSTITUTIONAL BUYER” (WITHIN THE
MEANING OF RULE 144A UNDER THE SECURITIES ACT) AND THAT IT EXERCISES SOLE INVESTMENT DISCRETION WITH RESPECT TO EACH SUCH ACCOUNT, AND 

(2) AGREES FOR THE BENEFIT OF ZENDESK, INC. (THE “COMPANY”) THAT IT WILL NOT OFFER, SELL, PLEDGE OR OTHERWISE
TRANSFER THIS SECURITY OR ANY BENEFICIAL INTEREST HEREIN PRIOR TO THE DATE THAT IS THE LATER OF (X) ONE YEAR AFTER THE LAST ORIGINAL ISSUE DATE OF THE SERIES OF NOTES UPON THE CONVERSION OF WHICH THIS SECURITY WAS ISSUED OR SUCH SHORTER PERIOD
OF TIME AS PERMITTED BY RULE 144 UNDER THE SECURITIES ACT OR ANY SUCCESSOR PROVISION THERETO AND (Y) SUCH LATER DATE, IF ANY, AS MAY BE REQUIRED BY APPLICABLE LAW, EXCEPT: 

(A) TO THE COMPANY OR ANY SUBSIDIARY THEREOF, OR 

(B) PURSUANT TO A REGISTRATION STATEMENT THAT HAS BECOME EFFECTIVE UNDER THE SECURITIES ACT AND IS EFFECTIVE AT THE TIME OF
SUCH TRANSFER, OR 
 (C) TO A PERSON THAT YOU REASONABLY BELIEVE TO BE A QUALIFIED INSTITUTIONAL BUYER IN COMPLIANCE WITH
RULE 144A UNDER THE SECURITIES ACT, OR 
 (D) PURSUANT TO AN EXEMPTION FROM REGISTRATION PROVIDED BY RULE 144 UNDER THE
SECURITIES ACT OR ANY OTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT. 
 PRIOR TO THE REGISTRATION OF
ANY TRANSFER IN ACCORDANCE WITH CLAUSE (2)(D) ABOVE, THE COMPANY AND THE TRANSFER AGENT FOR THE COMPANY’S COMMON STOCK RESERVE THE RIGHT TO REQUIRE THE DELIVERY OF SUCH LEGAL OPINIONS, CERTIFICATIONS OR OTHER EVIDENCE AS MAY REASONABLY BE
REQUIRED IN ORDER TO DETERMINE THAT THE PROPOSED TRANSFER IS BEING MADE IN COMPLIANCE WITH THE SECURITIES ACT AND APPLICABLE STATE SECURITIES LAWS. NO REPRESENTATION IS MADE AS TO THE AVAILABILITY OF ANY EXEMPTION FROM THE REGISTRATION REQUIREMENTS
OF THE SECURITIES ACT. 

  
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 Any such Common Stock (i) as to which such restrictions on transfer shall have expired in
accordance with their terms, (ii) that has been transferred pursuant to a registration statement that has become or been declared effective under the Securities Act and that continues to be effective at the time of such transfer or
(iii) that has been sold pursuant to the exemption from registration provided by Rule 144 or any similar provision then in force under the Securities Act, may, upon surrender of the certificates representing such shares of Common Stock for
exchange in accordance with the procedures of the transfer agent for the Common Stock, be exchanged for a new certificate or certificates for a like aggregate number of shares of Common Stock, which shall not bear the restrictive legend required by
this Section 2.05(d). 
 (e) Any Note that is owned by any Affiliate of the Company (or any Person who was an Affiliate of the Company
at any time during the three months immediately preceding) may not be resold by such Affiliate (or such Person, as the case may be) unless registered under the Securities Act or resold pursuant to an exemption from the registration requirements of
the Securities Act in a transaction that results in such Note no longer being a “restricted security” (as defined under Rule 144). 

(f) Notwithstanding anything contained herein to the contrary, neither the Trustee nor the Note Registrar shall be responsible for
ascertaining whether any transfer complies with the registration provisions of, or exemptions from, the Securities Act, applicable state securities laws or other applicable law. 

Section 2.06. Mutilated, Destroyed, Lost or Stolen Notes. In case any Note shall become mutilated or be destroyed, lost or
stolen, the Company in its discretion may execute, and upon receipt of a Company Order, the Trustee or an authenticating agent appointed by the Trustee shall authenticate and deliver, a new Note, bearing a registration number not contemporaneously
outstanding, in exchange and substitution for the mutilated Note, or in lieu of and in substitution for the Note so destroyed, lost or stolen. In every case the applicant for a substituted Note shall furnish to the Company, to the Trustee and, if
applicable, to such authenticating agent such security or indemnity as may be required by them to save each of them harmless from any loss, liability, cost or expense caused by or connected with such substitution, and, in every case of destruction,
loss or theft, the applicant shall also furnish to the Company, to the Trustee and, if applicable, to such authenticating agent evidence to their satisfaction of the destruction, loss or theft of such Note and of the ownership thereof. 

The Trustee or such authenticating agent may authenticate any such substituted Note and deliver the same upon the receipt of such security or
indemnity as the Trustee, the Company and, if applicable, such authenticating agent may require. No service charge shall be imposed by the Company, the Trustee, the Note Registrar, any co-Note Registrar or the Paying Agent upon the issuance of any
substitute Note, but the Company may require a Holder to pay a sum sufficient to cover any documentary, stamp or similar issue or transfer tax required in connection therewith as a result of the name of the Holder of the new substitute Note being
different from the name of the Holder of the old Note that became mutilated or was destroyed, lost or stolen. In case any Note that has matured or is about to mature or has been surrendered for required repurchase or is about to be converted in
accordance with Article 14 shall become mutilated or be destroyed, lost or stolen, the Company may, in its sole discretion, instead of issuing a substitute Note, pay or authorize the payment of or convert or authorize the conversion of the same
(without surrender thereof except in the case of a mutilated Note), as the case may be, if the applicant for such payment or conversion shall furnish to the Company, to the Trustee and, if applicable, to such authenticating agent such security or
indemnity as may be required by them to save each of them harmless for any loss, liability, cost or expense caused by or connected with such substitution, and, in every case of destruction, loss or theft, evidence satisfactory to the Company, the
Trustee and, if applicable, any Paying Agent or Conversion Agent evidence of their satisfaction of the destruction, loss or theft of such Note and of the ownership thereof. 

  
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 Every substitute Note issued pursuant to the provisions of this Section 2.06 by virtue of
the fact that any Note is destroyed, lost or stolen shall constitute an additional contractual obligation of the Company, whether or not the destroyed, lost or stolen Note shall be found at any time, and shall be entitled to all the benefits of (but
shall be subject to all the limitations set forth in) this Indenture equally and proportionately with any and all other Notes duly issued hereunder. To the extent permitted by law, all Notes shall be held and owned upon the express condition that
the foregoing provisions are exclusive with respect to the replacement, payment, conversion or repurchase of mutilated, destroyed, lost or stolen Notes and shall preclude any and all other rights or remedies notwithstanding any law or statute
existing or hereafter enacted to the contrary with respect to the replacement, payment, conversion or repurchase of negotiable instruments or other securities without their surrender. 

Section 2.07. Temporary Notes. Pending the preparation of Physical Notes, the Company may execute and the Trustee or an
authenticating agent appointed by the Trustee shall, upon receipt of a Company Order, authenticate and deliver temporary Notes (printed or lithographed). Temporary Notes shall be issuable in any authorized denomination, and substantially in the form
of the Physical Notes but with such omissions, insertions and variations as may be appropriate for temporary Notes, all as may be determined by the Company. Every such temporary Note shall be executed by the Company and authenticated by the Trustee
or such authenticating agent upon the same conditions and in substantially the same manner, and with the same effect, as the Physical Notes. Without unreasonable delay, the Company shall execute and deliver to the Trustee or such authenticating
agent Physical Notes (other than any Global Note) and thereupon any or all temporary Notes (other than any Global Note) may be surrendered in exchange therefor, at each office or agency maintained by the Company pursuant to Section 4.02 and the
Trustee or such authenticating agent shall authenticate and deliver in exchange for such temporary Notes an equal aggregate principal amount of Physical Notes. Such exchange shall be made by the Company at its own expense and without any charge
therefor. Until so exchanged, the temporary Notes shall in all respects be entitled to the same benefits and subject to the same limitations under this Indenture as Physical Notes authenticated and delivered hereunder. 

Section 2.08. Cancellation of Notes Paid, Converted, Etc. The Company shall cause all Notes surrendered for the purpose of
payment at maturity, registration of transfer or exchange or conversion, if surrendered to any Person that the Company controls other than the Trustee, to be surrendered to the Trustee for cancellation and they will no longer be considered
outstanding under this Indenture upon their payment at maturity, registration of transfer or exchange or conversion. All Notes delivered to the Trustee shall be canceled promptly by it. Except for any Notes surrendered for registration of transfer
or exchange, or as otherwise expressly permitted by any of the provisions of this Indenture, no Notes shall be authenticated in exchange for any Notes surrendered to the Trustee for cancellation. The Trustee shall dispose of canceled Notes in
accordance with its customary procedures. After such cancellation, the Trustee shall deliver a certificate of such cancellation to the Company, at the Company’s written request in a Company Order.  

Section 2.09. CUSIP Numbers. The Company in issuing the Notes may use CUSIP numbers (if then generally in use), and, if so,
the Trustee shall use CUSIP numbers in all notices issued to Holders as a convenience to such Holders; provided that any such notice may state that no representation is made as to the correctness of such numbers either as printed on the Notes
or on such notice and that reliance may be placed only on the other identification numbers printed on the Notes. The Company shall promptly notify the Trustee in writing of any change in the CUSIP numbers.  

  
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 Section 2.10. Additional Notes; Repurchases. The Company may, without the consent of,
or notice to, the Holders and notwithstanding Section 2.01, issue additional Notes hereunder with the same terms as the Notes initially issued hereunder (other than differences in the issue date, the issue price and interest accrued prior to
the issue date of such additional Notes) in an unlimited aggregate principal amount; provided that if any such additional Notes are not fungible with the Notes initially issued hereunder for U.S. federal income tax or securities law purposes,
such additional Notes shall have a separate CUSIP number. Prior to the issuance of any such additional Notes, the Company shall deliver to the Trustee a Company Order, an Officer’s Certificate and an Opinion of Counsel, such Officer’s
Certificate and Opinion of Counsel to cover such matters, in addition to those required by Section 17.05, as the Trustee shall reasonably request. In addition, the Company may, to the extent permitted by law and without the consent of Holders,
and directly or indirectly (regardless of whether such Notes are surrendered to the Company), repurchase Notes in the open market or otherwise, whether by the Company or its Subsidiaries or through a private or public tender or exchange offer or
through counterparties to private agreements, including by cash-settled swaps or other derivatives. The Company may, to the extent permitted by applicable law, reissue, resell or surrender to the Trustee for cancellation in accordance with
Section 2.08 any Notes that the Company may repurchase, in the case of a reissuance or resale, so long as such Notes do not constitute “restricted securities” (as defined under Rule 144) upon such resissuance or resale. Any Notes that
the Company may repurchase shall be considered outstanding for all purposes under this Indenture unless and until such time the Company surrenders them to the Trustee for cancellation in accordance with Section 2.08 and, upon receipt of a
written order from the Company, the Trustee shall cancel all Notes so surrendered. 
 ARTICLE 3 

SATISFACTION AND DISCHARGE 

Section 3.01. Satisfaction and Discharge. This Indenture and the Notes shall upon request of the Company contained in an
Officer’s Certificate cease to be of further effect, and the Trustee, at the expense of the Company, shall execute proper instruments acknowledging satisfaction and discharge of this Indenture and the Notes, when (a) (i) all Notes
theretofore authenticated and delivered (other than Notes which have been destroyed, lost or stolen and which have been replaced, paid or converted as provided in Section 2.06) have been delivered to the Trustee for cancellation; or
(ii) after the Notes have (x) become due and payable, whether on the Maturity Date, on any Fundamental Change Repurchase Date or otherwise and/or (y) been converted (and the related consideration due upon conversion has been
determined), the Company has deposited with the Trustee cash and/or has delivered to Holders shares of Common Stock, as applicable, (in the case of Common Stock, solely to satisfy the Company’s Conversion Obligation) sufficient to pay all of
the outstanding Notes and all other sums due and payable under this Indenture by the Company; and (b) the Company has delivered to the Trustee an Officer’s Certificate and an Opinion of Counsel, each stating that all conditions precedent
herein provided for relating to the satisfaction and discharge of this Indenture have been complied with. Notwithstanding the satisfaction and discharge of this Indenture, the obligations of the Company to the Trustee under Section 7.06 shall
survive. 

  
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 ARTICLE 4 

PARTICULAR COVENANTS OF THE COMPANY 

Section 4.01. Payment of Principal and Interest. The Company covenants and agrees that it will cause to be paid the principal
(including the Fundamental Change Repurchase Price, if applicable) of, the Settlement Amounts owed upon conversion on, and accrued and unpaid interest on, each of the Notes at the places, at the respective times and in the manner provided herein and
in the Notes. 
 Section 4.02. Maintenance of Office or Agency. The Company will maintain in the United States an office or
agency where the Notes may be surrendered for registration of transfer or exchange or for presentation for payment or repurchase (“Paying Agent”) or for conversion (“Conversion Agent”) and where notices in respect
of the Notes and this Indenture may be made. The Company will give prompt written notice to the Trustee of the location, and any change in the location, of such office or agency. If at any time the Company shall fail to maintain any such required
office or agency or shall fail to furnish the Trustee with the address thereof, such presentations, surrenders, notices and demands may be made at the Corporate Trust Office. 

The Company may also from time to time designate a Paying Agent one or more other offices or agencies where the Notes may be presented or
surrendered for any or all such purposes and may from time to time rescind such designations; provided that no such designation or rescission shall in any manner relieve the Company of its obligation to maintain an office or agency in the
United States for such purposes. The Company will give prompt written notice to the Trustee of any such designation or rescission and of any change in the location of any such other office or agency. The terms “Paying Agent” and
“Conversion Agent” include any such additional or other offices or agencies, as applicable. 
 The Company hereby initially
designates the Trustee as the Paying Agent, Note Registrar, Custodian and Conversion Agent and the Corporate Trust Office as a place in the United States where Notes may be surrendered for registration of transfer or exchange or for presentation for
payment or repurchase (if applicable) or for conversion and where notices in respect of the Notes and this Indenture may be made. 

Section 4.03. Appointments to Fill Vacancies in Trustee’s Office. The Company, whenever necessary to avoid or fill a vacancy
in the office of Trustee, will appoint, in the manner provided in Section 7.09, a Trustee, so that there shall at all times be a Trustee hereunder. 

Section 4.04. Provisions as to Paying Agent. (a) If the Company shall appoint a Paying Agent other than the Trustee, the
Company will cause such Paying Agent to execute and deliver to the Trustee an instrument in which such agent shall agree with the Trustee, subject to the provisions of this Section 4.04: 

(i) that it will hold all sums held by it as such agent for the payment of the principal (including the Fundamental Change
Repurchase Price, if applicable) of, and accrued and unpaid interest on, the Notes in trust for the benefit of the Holders of the Notes; 

(ii) that it will give the Trustee prompt notice of any failure by the Company to make any payment of the principal (including
the Fundamental Change Repurchase Price, if applicable) of, and accrued and unpaid interest on, the Notes when the same shall be due and payable; and 

  
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 (iii) that at any time during the continuance of an Event of Default, upon
request of the Trustee, it will forthwith pay to the Trustee all sums so held in trust; 
 provided, that a Paying Agent appointed as contemplated
under Section 15.02(f) shall not be required to deliver any such instrument. 
 The Company shall, on or before each due date of
the principal (including the Fundamental Change Repurchase Price, if applicable) of, or accrued and unpaid interest on, the Notes, deposit with the Paying Agent a sum sufficient to pay such principal (including the Fundamental Change Repurchase
Price, if applicable) or accrued and unpaid interest, and (unless such Paying Agent is the Trustee) the Company will promptly notify the Trustee of any failure to take such action; provided that if such deposit is made on the due date, such
deposit must be received by the Paying Agent by 11:00 a.m., New York City time, on such date. 
 (b) If the Company shall act as its
own Paying Agent, it will, on or before each due date of the principal (including the Fundamental Change Repurchase Price, if applicable) of, and accrued and unpaid interest on, the Notes, set aside, segregate and hold in trust for the benefit of
the Holders of the Notes a sum sufficient to pay such principal (including the Fundamental Change Repurchase Price, if applicable) and accrued and unpaid interest so becoming due and will promptly notify the Trustee in writing of any failure to take
such action and of any failure by the Company to make any payment of the principal (including the Fundamental Change Repurchase Price, if applicable) of, or accrued and unpaid interest on, the Notes when the same shall become due and payable. 

(c) Anything in this Section 4.04 to the contrary notwithstanding, the Company may, at any time, for the purpose of obtaining a
satisfaction and discharge of this Indenture, or for any other reason, pay, cause to be paid or deliver to the Trustee all sums or amounts held in trust by the Company or any Paying Agent hereunder as required by this Section 4.04, such sums or
amounts to be held by the Trustee upon the trusts herein contained and upon such payment or delivery by the Company or any Paying Agent to the Trustee, the Company or such Paying Agent shall be released from all further liability but only with
respect to such sums or amounts. 
 (d) Subject to applicable law, any money deposited with the Trustee, the Conversion Agent or any
Paying Agent, or any money and shares of Common Stock then held by the Company, in trust for the payment of the principal (including the Fundamental Change Repurchase Price, if applicable) of, accrued and unpaid interest on and the consideration due
upon conversion of any Note and remaining unclaimed for two years after such principal (including the Fundamental Change Repurchase Price, if applicable), interest or consideration due upon conversion has become due and payable shall be paid to the
Company on request of the Company contained in an Officer’s Certificate, or (if then held by the Company) shall be discharged from such trust; and the Holder of such Note shall thereafter, as an unsecured general creditor, look only to the
Company for payment thereof, and all liability of the Trustee, the Conversion Agent or such Paying Agent with respect to such trust money, and all liability of the Company as trustee with respect to such trust money and shares of Common Stock, shall
thereupon cease; provided, however, that the Trustee, Conversion Agent or such Paying Agent, before being required to make any such repayment, may at the expense of the Company cause to be published once, in a newspaper published in
the English language, customarily published on each Business Day and of general circulation in The Borough of Manhattan, The City of New York, notice that such money and shares of Common Stock remain unclaimed and that, after a date specified
therein, which shall not be less than 30 days from the date of such publication, any unclaimed balance of such money and shares of Common Stock then remaining will be repaid or delivered to the Company. 

  
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 Section 4.05. Existence. Subject to Article 11, the Company shall do or cause to be
done all things necessary to preserve and keep in full force and effect its corporate existence. 
 Section 4.06. Rule 144A
Information Requirement and Annual Reports. (a) At any time the Company is not subject to Section 13 or 15(d) of the Exchange Act, the Company shall, so long as any of the Notes or any shares of Common Stock issuable upon conversion
thereof shall, at such time, constitute “restricted securities” within the meaning of Rule 144(a)(3) under the Securities Act, promptly provide to the Trustee and, upon written request, any Holder, beneficial owner or prospective purchaser
of such Notes or any shares of Common Stock issuable upon conversion of such Notes, the information required to be delivered pursuant to Rule 144A(d)(4) under the Securities Act to facilitate the resale of such Notes or shares of Common Stock
pursuant to Rule 144A. 
 (b) The Company shall file with the Trustee, within 15 days after the same are required to be filed with the
Commission, copies of any documents or reports that the Company is required to file with the Commission pursuant to Section 13 or 15(d) of the Exchange Act (giving effect to any grace period provided by Rule 12b-25 under the Exchange Act).
Notwithstanding the foregoing, the Company shall in no event be required to file with, or otherwise provide or disclose to, the Trustee or any Holder any information for which the Company is requesting (assuming such request has not been denied), or
has received, confidential treatment from the Commission, or any correspondence with the Commission. Any such document or report that the Company files with the Commission via the Commission’s EDGAR system (or any successor thereto) shall be
deemed to be filed with the Trustee for purposes of this Section 4.06(b) at the time such documents are filed via the EDGAR system (or any successor thereto). 

(c) Delivery of the reports and documents described in subsection (b) above to the Trustee is for informational purposes only, and the
Trustee’s receipt of such shall not constitute constructive notice of any information contained therein or determinable from information contained therein, including the Company’s compliance with any of its covenants hereunder (as to which
the Trustee is entitled to conclusively rely on an Officer’s Certificate). 
 (d) If, at any time during the six-month period beginning
on, and including, the date that is six months after the last date of original issuance of the Notes, the Company fails to timely file any document or report that it is required to file with the Commission pursuant to Section 13 or 15(d) of the
Exchange Act, as applicable (after giving effect to all applicable grace periods thereunder and other than reports on Form 8-K), or the Notes are not otherwise freely tradable pursuant to Rule 144 by Holders other than the Company’s Affiliates
or Holders that were the Company’s Affiliates at any time during the three months immediately preceding (as a result of restrictions pursuant to U.S. securities laws or the terms of this Indenture or the Notes), the Company shall pay Additional
Interest on the Notes. Such Additional Interest shall accrue on the Notes at the rate of 0.50% per annum of the principal amount of the Notes outstanding for each day during such period for which the Company’s failure to file has occurred
and is continuing or the Notes are not otherwise freely tradable pursuant to Rule 144 by Holders other than the Company’s Affiliates (or Holders that were the Company’s Affiliates at any time during the three months immediately preceding).
As used in this Section 4.06(d), documents or reports that the Company is required to “file” with the Commission pursuant to Section 13 or 15(d) of the Exchange Act does not include documents or reports that the Company furnishes
to the Commission pursuant to Section 13 or 15(d) of the Exchange Act. 

  
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 (e) If, and for so long as, the Restrictive Legend on the Notes specified in Section 2.05(c)
has not been removed, the Notes are assigned a restricted CUSIP or the Notes are not otherwise freely tradable pursuant to Rule 144 by Holders other than the Company’s Affiliates or Holders that were the Company’s Affiliates at any time
during the three months immediately preceding (without restrictions pursuant to U.S. securities laws or the terms of this Indenture or the Notes) as of the 380th day after the last date of original issuance of the Notes, the Company shall pay
Additional Interest on the Notes at a rate equal to 0.50% per annum of the principal amount of Notes outstanding until the Restrictive Legend on the Notes has been removed in accordance with Section 2.05(c), the Notes are assigned an
unrestricted CUSIP and the Notes are freely tradable pursuant to Rule 144 by Holders other than the Company’s Affiliates (or Holders that were the Company’s Affiliates at any time during the three months immediately preceding) without
restrictions pursuant to U.S. securities laws or the terms of this Indenture or the Notes. The Restrictive Legend on the Notes shall be deemed removed pursuant to the terms of this Indenture as provided in Section 2.05(c), and, at such time,
the Notes will, pursuant to, and subject to the provisions of, such Section, be deemed assigned an unrestricted CUSIP number. However, for the avoidance of doubt, Global Notes will continue to bear Additional Interest pursuant to this paragraph
until such time as they are identified by an unrestricted CUSIP in the facilities of the Depositary therefor, as a result of completion of such Depositary’s mandatory exchange process or otherwise. 

(f) Additional Interest will be payable in arrears on each Interest Payment Date following accrual in the same manner as regular interest on
the Notes. 
 (g) Subject to the immediately succeeding sentence, the Additional Interest that is payable in accordance with
Section 4.06(d) or Section 4.06(e) shall be in addition to, and not in lieu of, any Additional Interest that may be payable as a result of the Company’s election pursuant to Section 6.03. However, in no event shall any Additional
Interest that may accrue as a result of the Company’s failure to timely file any document or report that it is required to file with the Commission pursuant to Section 13 or 15(d) of the Exchange Act, as applicable, after giving effect to
all applicable grace periods thereunder and other than reports on Form 8-K), as described in Section 4.06(d), together with any Additional Interest payable at the Company’s election as the remedy for an Event of Default relating to the
Company’s failure to comply with its obligations as set forth Section 4.06(b), accrue at a rate in excess of 0.50% per annum pursuant to this Indenture, regardless of the number of events or circumstances giving rise to the
requirement to pay such Additional Interest. 
 (h) If Additional Interest is payable by the Company pursuant to Section 4.06(d) or
Section 4.06(e), the Company shall deliver to the Trustee an Officer’s Certificate to that effect stating (i) the amount of such Additional Interest that is payable and (ii) the date on which such Additional Interest is payable.
Unless and until a Responsible Officer of the Trustee receives at the Corporate Trust Office such a certificate, the Trustee may assume without inquiry that no such Additional Interest is payable. 

Section 4.07. Stay, Extension and Usury Laws. The Company covenants (to the extent that it may lawfully do so) that it shall not
at any time insist upon, plead, or in any manner whatsoever claim or take the benefit or advantage of, any stay, extension or usury law or other law that would prohibit or forgive the Company from paying all or any portion of the principal of or
interest on the Notes as contemplated herein, wherever enacted, now or at any time hereafter in force, or that may affect the covenants or the performance of this Indenture; and the Company (to the extent it may lawfully do so) hereby expressly
waives all benefit or advantage of any such law, and covenants that it will not, by resort to any such law, hinder, delay or impede the execution of any power herein granted to the Trustee, but will suffer and permit the execution of every such
power as though no such law had been enacted. 

  
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 Section 4.08. Compliance Certificate; Statements as to Defaults. The Company
shall deliver to the Trustee within 120 days after the end of each fiscal year of the Company (beginning with the fiscal year ending on December 31, 2018) an Officer’s Certificate stating whether the signers thereof have knowledge of any
failure by the Company to comply with all conditions and covenants then required to be performed under this Indenture and, if so, specifying each such failure and the nature thereof. 

In addition, the Company shall deliver to the Trustee within 30 days after an Officer of the Company obtains knowledge of the occurrence of
any Event of Default or Default, an Officer’s Certificate setting forth the details of such Event of Default or Default, its status and the action that the Company is taking or proposing to take in respect thereof; provided that the Company is
not required to deliver such notice if such Event of Default or Default has been cured. 
 Section 4.09. Further Instruments and
Acts. Upon request of the Trustee, Paying Agent or Conversion Agent, the Company will execute and deliver such further instruments and do such further acts as may be reasonably necessary or proper to carry out more effectively the purposes of
this Indenture. 
 ARTICLE 5 

LISTS OF HOLDERS AND REPORTS BY THE
COMPANY AND THE TRUSTEE 
 Section 5.01. Lists of Holders. The
Company covenants and agrees that it will furnish or cause to be furnished to the Trustee, semi-annually, no later than March 1 and September 1 in each year beginning with September 15, 2018, and at such other times as the Trustee may
request in writing, within 15 days after receipt by the Company of any such request (or such lesser time as the Trustee may reasonably request in order to enable it to timely provide any notice to be provided by it hereunder), a list in such form as
the Trustee may reasonably require of the names and addresses of the Holders as of a date not more than 15 days (or such other date as the Trustee may reasonably request in order to so provide any such notices) prior to the time such information is
furnished, except that no such list need be furnished so long as the Trustee is acting as Note Registrar. 
 Section 5.02.
Preservation and Disclosure of Lists. The Trustee shall preserve, in as current a form as is reasonably practicable, all information as to the names and addresses of the Holders contained in the most recent list furnished to it as provided in
Section 5.01 or maintained by the Trustee in its capacity as Note Registrar, if so acting. The Trustee may destroy any list furnished to it as provided in Section 5.01 upon receipt of a new list so furnished. 

ARTICLE 6 
 DEFAULTS
AND REMEDIES 
 Section 6.01. Events of Default. Each of the following events shall be an
“Event of Default” with respect to the Notes: 
 (a) default in any payment of interest
on any Note when due and payable, and the default continues for a period of 30 days; 
 (b) default in the payment of
principal of any Note when due and payable on the Maturity Date, upon any required repurchase, upon declaration of acceleration or otherwise; 

(c) failure by the Company to comply with its obligation to convert the Notes in accordance with this Indenture upon exercise
of a Holder’s conversion right, and such failure continues for three Business Days; 

  
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 (d) failure by the Company to issue (i) a Fundamental Change Company Notice in accordance
with Section 15.02(c) when due, and such failure continues for five Business Days, or (ii) notice of a specified corporate event in accordance with Section 14.01(b)(ii) or 14.01(b)(iii) when due, and such failure continues for two
Business Days; 
 (e) failure by the Company to comply with its obligations under Article 11; 

(f) failure by the Company for 60 days after written notice from the Trustee or the Holders of at least 25% in principal amount of the Notes
then outstanding has been received by the Company to comply with any of its other agreements contained in the Notes or this Indenture; 

(g) default by the Company or any Significant Subsidiary of the Company with respect to any mortgage, agreement or other instrument under
which there may be outstanding, or by which there may be secured or evidenced, any indebtedness for money borrowed in excess of $45,000,000 (or its foreign currency equivalent) in the aggregate of the Company and/or any such Significant Subsidiary,
whether such indebtedness now exists or shall hereafter be created (i) resulting in such indebtedness becoming or being declared due and payable prior to its stated maturity or (ii) constituting a failure to pay the principal or interest
of any such debt when due and payable at its stated maturity, upon required repurchase, upon declaration of acceleration or otherwise, in each case, after the expiration of any applicable grace period, if such acceleration shall not have been
rescinded or annulled or such failure to pay or default shall not have been cured or waived, or such indebtedness shall not have been paid or discharged, as the case may be, within 30 days after written notice to the Company by the Trustee or to the
Company and the Trustee by Holders of at least 25% in aggregate principal amount of Notes then outstanding in accordance with this Indenture; 

(h) a final judgment or judgments for the payment of $45,000,000 (or its foreign currency equivalent) or more (excluding any amounts covered
by insurance) in the aggregate rendered against the Company or any Significant Subsidiary of the Company, which judgment is not discharged, bonded, paid, waived or stayed within 60 days after (i) the date on which the right to appeal thereof
has expired if no such appeal has commenced, or (ii) the date on which all rights to appeal have been extinguished; 
 (i) the Company
or any Significant Subsidiary shall commence a voluntary case or other proceeding seeking liquidation, reorganization or other relief with respect to the Company or any such Significant Subsidiary or its debts under any bankruptcy, insolvency or
other similar law now or hereafter in effect or seeking the appointment of a trustee, receiver, liquidator, custodian or other similar official of the Company or any such Significant Subsidiary or any substantial part of its property, or shall
consent to any such relief or to the appointment of or taking possession by any such official in an involuntary case or other proceeding commenced against it, or shall make a general assignment for the benefit of creditors, or shall publicly admit
in writing that it generally is not paying, or is unable to pay, its debts as they become due; or 
 (j) an involuntary case or other
proceeding shall be commenced against the Company or any Significant Subsidiary seeking liquidation, reorganization or other relief with respect to the Company or such Significant Subsidiary or its debts under any bankruptcy, insolvency or other
similar law now or hereafter in effect or seeking the appointment of a trustee, receiver, liquidator, custodian or other similar official of the Company or such Significant Subsidiary or any substantial part of its property, and such involuntary
case or other proceeding shall remain undismissed and unstayed for a period of 60 consecutive days. 

  
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 Section 6.02. Acceleration; Rescission and Annulment. If one or more Events of
Default shall have occurred and be continuing (whatever the reason for such Event of Default and whether it shall be voluntary or involuntary or be effected by operation of law or pursuant to any judgment, decree or order of any court or any order,
rule or regulation of any administrative or governmental body), then, and in each and every such case (other than an Event of Default specified in Section 6.01(i) or Section 6.01(j) with respect to the Company), unless the principal of all
of the Notes shall have already become due and payable, either the Trustee or the Holders of at least 25% in aggregate principal amount of the Notes then outstanding determined in accordance with Section 8.04, by notice in writing to the
Company (and to the Trustee if given by Holders), may declare 100% of the principal of, and accrued and unpaid interest on, all the Notes to be due and payable immediately, and upon any such declaration the same shall become and shall automatically
be immediately due and payable, anything contained in this Indenture or in the Notes to the contrary notwithstanding. If an Event of Default specified in Section 6.01(i) or Section 6.01(j) with respect to the Company occurs and is
continuing, 100% of the principal of, and accrued and unpaid interest, if any, on, all Notes shall become and shall automatically be immediately due and payable. 

The immediately preceding paragraph, however, is subject to the conditions that if, at any time after the principal of the Notes shall have
been so declared due and payable, and before any judgment or decree for the payment of the monies due shall have been obtained or entered as hereinafter provided, the Company shall pay or shall deposit with the Trustee a sum sufficient to pay
installments of accrued and unpaid interest upon all Notes and the principal of any and all Notes that shall have become due otherwise than by acceleration (with interest on overdue installments of accrued and unpaid interest to the extent that
payment of such interest is enforceable under applicable law, and on such principal at the rate borne by the Notes at such time) and amounts due to the Trustee pursuant to Section 7.06, and if (1) rescission would not conflict with any
judgment or decree of a court of competent jurisdiction and (2) any and all existing Events of Default under this Indenture, other than the nonpayment of the principal of and accrued and unpaid interest, if any, on Notes that shall have become
due solely by such acceleration, shall have been cured or waived pursuant to Section 6.09, then and in every such case (except as provided in the immediately succeeding sentence) the Holders of a majority in aggregate principal amount of the
Notes then outstanding, by written notice to the Company and to the Trustee, may waive all Defaults or Events of Default with respect to the Notes and rescind and annul such declaration and its consequences and such Default shall cease to exist, and
any Event of Default arising therefrom shall be deemed to have been cured for every purpose of this Indenture; but no such waiver or rescission and annulment shall extend to or shall affect any subsequent Default or Event of Default, or shall impair
any right consequent thereon. Notwithstanding anything to the contrary herein, no such waiver or rescission and annulment shall extend to or shall affect any Default or Event of Default resulting from (i) the nonpayment of the principal
(including the Fundamental Change Repurchase Price, if applicable) of, or accrued and unpaid interest on, any Notes, (ii) a failure to repurchase any Notes when required or (iii) a failure to pay or deliver, as the case may be, the
consideration due upon conversion of the Notes. 

  
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 Section 6.03. Additional Interest. Notwithstanding anything in this Indenture or in
the Notes to the contrary, to the extent the Company elects, the sole remedy for an Event of Default relating to the Company’s failure to comply with its obligations as set forth in Section 4.06(b) shall after the occurrence of such an
Event of Default consist exclusively of the right to receive Additional Interest on the Notes at a rate equal to: (i) 0.25% per annum of the principal amount of the Notes outstanding for each day during the period beginning on, and
including, the date on which such Event of Default first occurs and ending on the earlier of (x) the date on which such Event of Default is cured or validly waived in accordance with this Article 6 and (y) the 180th day immediately
following, and including, the date on which such Event of Default first occurs and (ii) if such Event of Default has not been cured or validly waived prior to the 181st day immediately following, and including, the date on which such Event of
Default first occurs, 0.50% per annum of the principal amount of Notes outstanding for each day during the period beginning on, and including, the 181st day immediately following, and including, the date on which such Event of Default first
occurs and ending on the earlier of (x) the date on which the Event of Default is cured or validly waived in accordance with this Article 6 and (y) the 360th day immediately following, and including, the date on which such Event of Default
first occurs. Additional Interest payable pursuant to this Section 6.03 shall be in addition to, not in lieu of, any Additional Interest payable pursuant to Section 4.06(d) or Section 4.06(e), subject to the second immediately
succeeding paragraph. If the Company so elects, such Additional Interest shall be payable in the same manner and on the same dates as the stated interest payable on the Notes and shall accrue on all outstanding Notes from, and including, the date on
which the Event of Default relating to the Company’s failure to comply with its obligations as set forth in Section 4.06(b) first occurs to, and including, the 360th day thereafter (or such earlier date on which such Event of Default is
cured or validly waived in accordance with this Article 6). On the 361st day after such Event of Default (if the Event of Default relating to the Company’s failure to comply with its obligations as set forth in Section 4.06(b) is not cured
or validly waived in accordance with this Article 6 prior to such 361st day), such Additional Interest shall cease to accrue and the Notes shall be immediately subject to acceleration as provided in Section 6.02. The provisions of this
paragraph will not affect the rights of Holders of Notes in the event of the occurrence of any Event of Default other than the Company’s failure to comply with its obligations as set forth in Section 4.06(b). In the event the Company does not
elect to pay Additional Interest following an Event of Default in accordance with this Section 6.03 or the Company has elected to make such payment but does not pay the Additional Interest when due, the Notes shall be immediately subject to
acceleration as provided in Section 6.02. 
 In order to elect to pay Additional Interest as the sole remedy during the first 360 days
after the occurrence of any Event of Default described in the immediately preceding paragraph, the Company must notify all Holders of the Notes, the Trustee and the Paying Agent in an Officer’s Certificate (consistent with Section 4.06(h))
of such election on or before the open of business on the business day immediately succeeding the date on which such Event of Default first occurs. Upon the failure to timely give such notice, the Notes shall be immediately subject to acceleration
as provided in Section 6.02. 
 In no event shall Additional Interest payable at the Company’s election as the remedy for an Event
of Default relating to the Company’s failure to comply with its obligations as set forth in Section 4.06(b), together with any Additional Interest that may accrue as a result of the Company’s failure to timely file any document or
report that it is required to file with the Commission pursuant to Section 13 or 15(d) of the Exchange Act, as applicable, after giving effect to all applicable grace periods thereunder and other than reports on Form 8-K), pursuant to
Section 4.06(d), accrue at a rate in excess of 0.50% per annum pursuant to this Indenture, regardless of the number of events or circumstances giving rise to the requirement to pay such Additional Interest. 

Section 6.04. Payments of Notes on Default; Suit Therefor. If an Event of Default described in clause (a) or (b) of
Section 6.01 shall have occurred, the Company shall, upon demand of the Trustee, pay to the Trustee, for the benefit of the Holders of the Notes, the whole amount then due and payable on the Notes for principal and interest, if any, with
interest on any overdue principal and interest, if any, at the rate borne by the Notes at such time, and, in addition thereto, such further amount as shall be sufficient to cover any amounts due to the Trustee under Section 7.06. If the Company
shall fail to pay such amounts forthwith upon such demand, the Trustee, in its own name and as trustee of an express trust, may institute a judicial proceeding for the collection of the sums so due and unpaid, may prosecute such proceeding to
judgment or final decree and may enforce the same against the Company or any other obligor upon the Notes and collect the moneys adjudged or decreed to be payable in the manner provided by law out of the property of the Company or any other obligor
upon the Notes, wherever situated. 

  
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 In the event there shall be pending proceedings for the bankruptcy or for the reorganization of
the Company or any other obligor on the Notes under Title 11 of the United States Code, or any other applicable law, or in case a receiver, assignee or trustee in bankruptcy or reorganization, liquidator, sequestrator or similar official shall have
been appointed for or taken possession of the Company or such other obligor, the property of the Company or such other obligor, or in the event of any other judicial proceedings relative to the Company or such other obligor upon the Notes, or to the
creditors or property of the Company or such other obligor, the Trustee, irrespective of whether the principal of the Notes shall then be due and payable as therein expressed or by declaration or otherwise and irrespective of whether the Trustee
shall have made any demand pursuant to the provisions of this Section 6.04, shall be entitled and empowered, by intervention in such proceedings or otherwise, to file and prove a claim or claims for the whole amount of principal and accrued and
unpaid interest, if any, in respect of the Notes, and, in case of any judicial proceedings, to file such proofs of claim and other papers or documents and to take such other actions as it may deem necessary or advisable in order to have the claims
of the Trustee (including any claim for the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel) and of the Holders allowed in such judicial proceedings relative to the Company or any other obligor on
the Notes, its or their creditors, or its or their property, and to collect and receive any monies or other property payable or deliverable on any such claims, and to distribute the same after the deduction of any amounts due to the Trustee under
Section 7.06; and any receiver, assignee or trustee in bankruptcy or reorganization, liquidator, custodian or similar official is hereby authorized by each of the Holders to make such payments to the Trustee, as administrative expenses, and, in
the event that the Trustee shall consent to the making of such payments directly to the Holders, to pay to the Trustee any amount due it for reasonable compensation, expenses, advances and disbursements, including agents and counsel fees, and
including any other amounts due to the Trustee under Section 7.06, incurred by it up to the date of such distribution. To the extent that such payment of reasonable compensation, expenses, advances and disbursements out of the estate in any
such proceedings shall be denied for any reason, payment of the same shall be secured by a lien on, and shall be paid out of, any and all distributions, dividends, monies, securities and other property that the Holders of the Notes may be entitled
to receive in such proceedings, whether in liquidation or under any plan of reorganization or arrangement or otherwise. 
 Nothing herein
contained shall be deemed to authorize the Trustee to authorize or consent to or accept or adopt on behalf of any Holder any plan of reorganization, arrangement, adjustment or composition affecting such Holder or the rights of any Holder thereof, or
to authorize the Trustee to vote in respect of the claim of any Holder in any such proceeding. 
 All rights of action and of asserting
claims under this Indenture, or under any of the Notes, may be enforced by the Trustee without the possession of any of the Notes, or the production thereof at any trial or other proceeding relative thereto, and any such suit or proceeding
instituted by the Trustee shall be brought in its own name as trustee of an express trust, and any recovery of judgment shall, after provision for the payment of the reasonable compensation, expenses, disbursements and advances of the Trustee, its
agents and counsel, be for the ratable benefit of the Holders of the Notes. 
 In any proceedings brought by the Trustee (and in any
proceedings involving the interpretation of any provision of this Indenture to which the Trustee shall be a party) the Trustee shall be held to represent all the Holders of the Notes, and it shall not be necessary to make any Holders of the Notes
parties to any such proceedings. 

  
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 In case the Trustee shall have proceeded to enforce any right under this Indenture and such
proceedings shall have been discontinued or abandoned because of any waiver pursuant to Section 6.09 or any rescission and annulment pursuant to Section 6.02 or for any other reason or shall have been determined adversely to the Trustee,
then and in every such case the Company, the Holders and the Trustee shall, subject to any determination in such proceeding, be restored respectively to their several positions and rights hereunder, and all rights, remedies and powers of the
Company, the Holders and the Trustee shall continue as though no such proceeding had been instituted. 
 Section 6.05. Application
of Monies Collected by Trustee. Any monies collected by the Trustee pursuant to this Article 6 with respect to the Notes shall be applied in the following order, at the date or dates fixed by the Trustee for the distribution of such monies, upon
presentation of the several Notes, and stamping thereon the payment, if only partially paid, and upon surrender thereof, if fully paid: 

First, to the payment of all amounts due the Trustee, including its agent and counsel, under Section 7.06; 

Second, in case the principal of the outstanding Notes shall not have become due and be unpaid, to the payment of interest on, and any
cash due upon conversion of, the Notes in default in the order of the date due of the payments of such interest and cash due upon conversion, as the case may be, with interest (to the extent that such interest has been collected by the Trustee) upon
such overdue payments at the rate borne by the Notes at such time, such payments to be made ratably to the Persons entitled thereto; 

Third, in case the principal of the outstanding Notes shall have become due, by declaration or otherwise, and be unpaid to the payment
of the whole amount (including, if applicable, the payment of the Fundamental Change Repurchase Price and any cash due upon conversion) then owing and unpaid upon the Notes for principal and interest, if any, with interest on the overdue principal
and, to the extent that such interest has been collected by the Trustee, upon overdue installments of interest at the rate borne by the Notes at such time, and in case such monies shall be insufficient to pay in full the whole amounts so due and
unpaid upon the Notes, then to the payment of such principal (including, if applicable, the Fundamental Change Repurchase Price and any cash due upon conversion) and interest without preference or priority of principal over interest, or of interest
over principal or of any installment of interest over any other installment of interest, or of any Note over any other Note, ratably to the aggregate of such principal (including, if applicable, the Fundamental Change Repurchase Price and any cash
due upon conversion) and accrued and unpaid interest; and 
 Fourth, to the payment of the remainder, if any, to the Company. 

Section 6.06. Proceedings by Holders. Except to enforce the right to receive payment of principal (including, if applicable, the
Fundamental Change Repurchase Price) or interest when due, or the right to receive payment or delivery of the consideration due upon conversion, no Holder of any Note shall have any right by virtue of or by availing of any provision of this
Indenture to institute any suit, action or proceeding in equity or at law upon or under or with respect to this Indenture, or for the appointment of a receiver, trustee, liquidator, custodian or other similar official, or for any other remedy
hereunder, unless: 
 (a) such Holder previously shall have given to the Trustee written notice of an Event of Default and of the continuance
thereof, as herein provided; 

  
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 (b) Holders of at least 25% in aggregate principal amount of the Notes then outstanding shall
have made written request upon the Trustee to institute such action, suit or proceeding in its own name as Trustee hereunder; 
 (c) such
Holders shall have offered to the Trustee such security or indemnity satisfactory to Trustee in its reasonable judgment against any loss, liability or expense to be incurred therein or thereby; 

(d) the Trustee for 60 days after its receipt of such notice, request and offer of such security or indemnity, shall have neglected or refused
to institute any such action, suit or proceeding; and 
 (e) no direction that, in the opinion of the Trustee, is inconsistent with such
written request shall have been given to the Trustee by the Holders of a majority of the aggregate principal amount of the Notes then outstanding within such 60-day period pursuant to Section 6.09, 

it being understood and intended, and being expressly covenanted by the taker and Holder of every Note with every other taker and Holder and the Trustee that
no one or more Holders shall have any right in any manner whatever by virtue of or by availing of any provision of this Indenture to affect, disturb or prejudice the rights of any other Holder, or to obtain or seek to obtain priority over or
preference to any other such Holder, or to enforce any right under this Indenture, except in the manner herein provided and for the equal, ratable and common benefit of all Holders (except as otherwise provided herein). For the protection and
enforcement of this Section 6.06, each and every Holder and the Trustee shall be entitled to such relief as can be given either at law or in equity. 

Notwithstanding any other provision of this Indenture and any provision of any Note, each Holder shall have the contractual right to receive
payment or delivery, as the case may be, of (x) the principal (including the Fundamental Change Repurchase Price, if applicable) of, (y) accrued and unpaid interest, if any, on, and (z) the consideration due upon conversion of, such
Note, on or after the respective due dates expressed or provided for in such Note or in this Indenture, and the contractual right to institute suit for the enforcement of any such payment or delivery, as the case may be, on or after such respective
dates, shall not be amended without the consent of each Holder. 
 Section 6.07. Proceedings by Trustee. In case of an Event of
Default, the Trustee may in its discretion proceed to protect and enforce the rights vested in it by this Indenture by such appropriate judicial proceedings as are necessary to protect and enforce any of such rights, either by suit in equity or by
action at law or by proceeding in bankruptcy or otherwise, whether for the specific enforcement of any covenant or agreement contained in this Indenture or in aid of the exercise of any power granted in this Indenture, or to enforce any other legal
or equitable right vested in the Trustee by this Indenture or by law. 
 Section 6.08. Remedies Cumulative and Continuing.
Except as provided in the last paragraph of Section 2.06, all powers and remedies given by this Article 6 to the Trustee or to the Holders shall, to the extent permitted by law, be deemed cumulative and not exclusive of any thereof or of any
other powers and remedies available to the Trustee or the Holders of the Notes, by judicial proceedings or otherwise, to enforce the performance or observance of the covenants and agreements contained in this Indenture, and no delay or omission of
the Trustee or of any Holder of any of the Notes to exercise any right or power accruing upon any Default or Event of Default shall impair any such right or power, or shall be construed to be a waiver of any such Default or Event of Default or any
acquiescence therein; and, subject to the provisions of Section 6.06, every power and remedy given by this Article 6 or by law to the Trustee or to the Holders may be exercised from time to time, and as often as shall be deemed expedient, by
the Trustee or by the Holders. 

  
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 Section 6.09. Direction of Proceedings and Waiver of Defaults by Majority of
Holders. The Holders of a majority of the aggregate principal amount of the Notes at the time outstanding determined in accordance with Section 8.04 shall have the right to direct the time, method and place of conducting any proceeding for
any remedy available to the Trustee or exercising any trust or power conferred on the Trustee with respect to the Notes; provided, however, that (a) such direction shall not be in conflict with any rule of law or with this
Indenture, and (b) the Trustee may take any other action deemed proper by the Trustee that is not inconsistent with such direction. The Trustee may refuse to follow any direction that it determines is unduly prejudicial to the rights of any
other Holder or that would involve the Trustee in personal liability. The Holders of a majority in aggregate principal amount of the Notes at the time outstanding determined in accordance with Section 8.04 may on behalf of the Holders of all of
the Notes (x) waive any past Default or Event of Default hereunder and its consequences except (i) a default in the payment of accrued and unpaid interest, if any, on, or the principal (including any Fundamental Change Repurchase Price)
of, the Notes when due that has not been cured pursuant to the provisions of Section 6.01, (ii) a failure by the Company to pay or deliver, as the case may be, the consideration due upon conversion of the Notes or (iii) a default in
respect of a covenant or provision hereof which under Article 10 cannot be modified or amended without the consent of each Holder of an outstanding Note affected; and (y) rescind any resulting acceleration of the Notes and its consequences if
(i) such rescission would not conflict with any judgment or decree of a court of competent jurisdiction and (ii) all existing Events of Default (other than nonpayment of the principal of, and interest on, the Notes that have become due
solely by such acceleration) have been cured or waived. Upon any such waiver the Company, the Trustee and the Holders of the Notes shall be restored to their former positions and rights hereunder; but no such waiver shall extend to any subsequent or
other Default or Event of Default or impair any right consequent thereon. Whenever any Default or Event of Default hereunder shall have been waived as permitted by this Section 6.09, said Default or Event of Default shall for all purposes of
the Notes and this Indenture be deemed to have been cured and to be not continuing; but no such waiver shall extend to any subsequent or other Default or Event of Default or impair any right consequent thereon. 

Section 6.10. Notice of Defaults. The Trustee shall, after the occurrence and continuance of a Default of which a
Responsible Officer has actual knowledge, deliver to all Holders notice of such Default within 90 days after such Responsible Officer obtains such knowledge, unless such Defaults shall have been cured or waived before the giving of such notice;
provided that, except in the case of a Default in the payment of the principal of (including the Fundamental Change Repurchase Price, if applicable), or accrued and unpaid interest on, any of the Notes or a Default in the payment or delivery
of the consideration due upon conversion, the Trustee shall be protected in withholding such notice if and so long as a Responsible Officer of the Trustee in good faith determines that the withholding of such notice is in the interests of the
Holders. 

  
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 Section 6.11. Undertaking to Pay Costs. All parties to this Indenture agree,
and each Holder of any Note by its acceptance thereof shall be deemed to have agreed, that any court may, in its discretion, require, in any suit for the enforcement of any right or remedy under this Indenture, or in any suit against the Trustee for
any action taken or omitted by it as Trustee, the filing by any party litigant in such suit of an undertaking to pay the costs of such suit and that such court may in its discretion assess reasonable costs, including reasonable attorneys’ fees
and expenses, against any party litigant in such suit, having due regard to the merits and good faith of the claims or defenses made by such party litigant; provided that the provisions of this Section 6.11 (to the extent permitted by
law) shall not apply to any suit instituted by the Trustee, to any suit instituted by any Holder, or group of Holders, holding in the aggregate more than 10% in principal amount of the Notes at the time outstanding determined in accordance with
Section 8.04, or to any suit instituted by any Holder for the enforcement of the payment of the principal of or accrued and unpaid interest, if any, on any Note (including, but not limited to, the Fundamental Change Repurchase Price, if
applicable) on or after the due date expressed or provided for in such Note or to any suit for the enforcement of the right to convert any Note, or receive the consideration due upon conversion, in accordance with the provisions of Article 14.

 ARTICLE 7 

CONCERNING THE TRUSTEE 

Section 7.01. Duties and Responsibilities of Trustee. The Trustee, prior to the occurrence of an Event of Default and after
the curing or waiver of all Events of Default that may have occurred, undertakes to perform such duties and only such duties as are specifically set forth in this Indenture. If an Event of Default has occurred and is continuing, the Trustee shall
exercise such of the rights and powers vested in it by this Indenture, and use the same degree of care and skill in its exercise, as a prudent person would exercise or use under the circumstances in the conduct of such person’s own affairs;
provided that the Trustee will be under no obligation to exercise any of the rights or powers under this Indenture at the request or direction of any of the Holders unless such Holders have offered to the Trustee indemnity or security
satisfactory to Trustee in its reasonable judgment against any loss, liability or expense that might be incurred by it in compliance with such request or direction. 

No provision of this Indenture shall be construed to relieve the Trustee from liability for its own grossly negligent action, its own grossly
negligent failure to act or its own willful misconduct, except that: 
 (a) prior to the occurrence of an Event of Default and after the
curing or waiving of all Events of Default that may have occurred: 
 (i) the duties and obligations of the Trustee shall be
determined solely by the express provisions of this Indenture, and the Trustee shall not be liable except for the performance of such duties and obligations as are specifically set forth in this Indenture and no implied covenants or obligations
shall be read into this Indenture against the Trustee; and 
 (ii) in the absence of bad faith and willful misconduct on the
part of the Trustee, the Trustee may conclusively rely, as to the truth of the statements and the correctness of the opinions expressed therein, upon any certificates or opinions furnished to the Trustee and conforming to the requirements of this
Indenture; but, in the case of any such certificates or opinions that by any provisions hereof are specifically required to be furnished to the Trustee, the Trustee shall be under a duty to examine the same to determine whether or not they conform
to the requirements of this Indenture (but need not confirm or investigate the accuracy of any mathematical calculations or other facts stated therein); 

(b) the Trustee shall not be liable for any error of judgment made in good faith by a Responsible Officer or Officers of the Trustee, unless
it shall be proved that the Trustee was grossly negligent in ascertaining the pertinent facts; 

  
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 (c) the Trustee shall not be liable with respect to any action taken or omitted to be taken by it
in good faith in accordance with the direction of the Holders of not less than a majority of the aggregate principal amount of the Notes at the time outstanding determined as provided in Section 8.04 relating to the time, method and place of
conducting any proceeding for any remedy available to the Trustee, or exercising any trust or power conferred upon the Trustee, under this Indenture; 

(d) whether or not therein provided, every provision of this Indenture relating to the conduct or affecting the liability of, or affording
protection to, the Trustee shall be subject to the provisions of this Section; 
 (e) the Trustee shall not be liable in respect of any
payment (as to the correctness of amount, entitlement to receive or any other matters relating to payment) or notice effected by the Company or any Paying Agent (except in its capacity as Paying Agent pursuant to the terms of this Indenture) or any
records maintained by any co-Note Registrar with respect to the Notes; 
 (f) if any party fails to deliver a notice relating to an event
the fact of which, pursuant to this Indenture, requires notice to be sent to the Trustee, the Trustee may conclusively rely on its failure to receive such notice as reason to act as if no such event occurred, unless a Responsible Officer of the
Trustee had actual knowledge of such event; 
 (g) in the absence of written investment direction from the Company, all cash received by the
Trustee shall be placed in a non-interest bearing trust account, and in no event shall the Trustee be liable for the selection of investments or for investment losses incurred thereon or for losses incurred as a result of the liquidation of any such
investment prior to its maturity date or the failure of the party directing such investments prior to its maturity date or the failure of the party directing such investment to provide timely written investment direction, and the Trustee shall have
no obligation to invest or reinvest any amounts held hereunder in the absence of such written investment direction from the Company; and 

(h) in the event that the Trustee is also acting as Custodian, Note Registrar, Paying Agent, Conversion Agent, Bid Solicitation Agent or
transfer agent hereunder, the rights and protections afforded to the Trustee pursuant to this Article 7 shall also be afforded to such Custodian, Note Registrar, Paying Agent, Conversion Agent, Bid Solicitation Agent or transfer agent. 

None of the provisions contained in this Indenture shall require the Trustee to expend or risk its own funds or otherwise incur personal
financial liability in the performance of any of its duties or in the exercise of any of its rights or powers. 

Section 7.02. Reliance on Documents, Opinions, Etc. Except as otherwise provided in Section 7.01: 

(a) The Trustee may conclusively rely and shall be fully protected in acting upon any resolution, certificate, statement, instrument, opinion,
report, notice, request, consent, order, bond, note, coupon or other paper or document believed by it in good faith to be genuine and to have been signed or presented by the proper party or parties. 

(b) Any request, direction, order or demand of the Company mentioned herein shall be sufficiently evidenced by an Officer’s Certificate
(unless other evidence in respect thereof be herein specifically prescribed); and any Board Resolution may be evidenced to the Trustee by a copy thereof certified by the Secretary or an Assistant Secretary of the Company. Before the Trustee acts or
refrains from acting, it may require an Officer’s Certificate or an Opinion of Counsel or both. The Trustee shall not be liable for any action it takes or omits to take in good faith in reliance on such Officer’s Certificate or Opinion of
Counsel. 

  
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 (c) The Trustee may consult with counsel and require an Opinion of Counsel and any advice of such
counsel or Opinion of Counsel shall be full and complete authorization and protection in respect of any action taken or omitted by it hereunder in good faith and in reliance on such advice or Opinion of Counsel. 

(d) The Trustee shall not be bound to make any investigation into the facts or matters stated in any resolution, certificate, statement,
instrument, opinion, report, notice, request, direction, consent, order, bond, debenture or other paper or document, but the Trustee, in its discretion, may make such further inquiry or investigation into such facts or matters as it may see fit,
and, if the Trustee shall determine in its reasonable judgment to make such further inquiry or investigation, it shall be entitled, at a reasonable time on any Business Day after reasonable notice, to examine the books, records and premises of the
Company, personally or by agent or attorney at the expense of the Company and shall incur no liability of any kind by reason of such inquiry or investigation. 

(e) The Trustee may execute any of the trusts or powers hereunder or perform any duties hereunder either directly or by or through agents,
custodians, nominees or attorneys and the Trustee shall not be responsible for any misconduct or negligence on the part of any agent, custodian, nominee or attorney appointed by it with due care hereunder, and the permissive rights of the Trustee
enumerated herein shall not be construed as duties. 
 (f) The Trustee shall not be required to give any bond or surety in respect of the
execution of the trusts and powers under this Indenture. 
 (g) The Trustee may request that the Company deliver an Officer’s
Certificate setting forth the names of individuals and/or titles of officers authorized at such time to take specified actions pursuant to this Indenture, which Officer’s Certificate may be signed by any Person authorized to sign an
Officer’ Certificate, including any Person specified as so authorized in any such certificate previously delivered and not superseded. 

(h) The Trustee shall not be deemed to have notice of any Default or Event of Default (except in the case of a Default or Event of Default in
payment of scheduled principal of, premium, if any, or interest on, any Note) unless a Responsible Officer of the Trustee has actual knowledge thereof or unless written notice of any event which is in fact such a Default or Event of Default (and
stating the occurrence of a Default or Event of Default) is received by the Trustee at the Corporate Trust Office of the Trustee, and such notice references the Notes and this Indenture. 

(i) The Trustee shall not be responsible or liable for any action it takes or omits to take in good faith which it reasonably believes to be
authorized or within its rights or powers. 
 (j) The Trustee shall not be responsible or liable for any action taken or omitted by it in
good faith at the direction of the holders of not less than a majority in principal amount of the Notes as to the time, method and place of conducting any proceedings for any remedy available to the Trustee or the exercising of any power conferred
by this Indenture. 
 (k) Neither the Trustee nor any of its directors, officers, employees, agents or affiliates shall be responsible for
nor have any duty to monitor the performance or any action of the Company, or any of their respective directors, members, officers, agents, affiliates or employee, nor shall it have any liability in connection with the malfeasance or nonfeasance by
such party. The Trustee shall not be responsible for any inaccuracy in the information obtained from the Company or for any inaccuracy or omission in the records which may result from such information or any failure by the Trustee to perform its
duties as set forth herein as a result of any inaccuracy or incompleteness. 

  
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 (l) In no event shall the Trustee be responsible or liable for punitive, special, indirect or any
consequential loss or damage of any kind whatsoever (including but not limited to lost profits), even if the Trustee has been advised of the likelihood of such loss or damage and regardless of the form of action other than any such loss or damage
caused by the Trustee’s willful misconduct or gross negligence. The Trustee shall not be charged with knowledge of any Default or Event of Default with respect to the Notes, unless either (1) a Responsible Officer shall have actual
knowledge of such Default or Event of Default or (2) written notice of such Default or Event of Default shall have been given to the Trustee by the Company or by any Holder of the Notes. 

(m) Neither the Trustee nor any Agent shall have any responsibility or liability for any actions taken or not taken by the Depositary. 

Section 7.03. No Responsibility for Recitals, Etc. The recitals contained herein and in the Notes (except in the
Trustee’s certificate of authentication) shall be taken as the statements of the Company, and the Trustee assumes no responsibility for the correctness of the same. The Trustee makes no representations as to the validity or sufficiency of this
Indenture or of the Notes. The Trustee shall not be accountable for the use or application by the Company of any Notes or the proceeds of any Notes authenticated and delivered by the Trustee in conformity with the provisions of this Indenture.

 Section 7.04. Trustee, Paying Agents, Conversion Agents, Bid Solicitation Agent or Note Registrar May Own Notes.
The Trustee, any Paying Agent, any Conversion Agent, Bid Solicitation Agent or Note Registrar (in each case, if other than an Affiliate of the Company), in its individual or any other capacity, may become the owner or pledgee of Notes with the same
rights it would have if it were not the Trustee, Paying Agent, Conversion Agent, Bid Solicitation Agent or Note Registrar. 

Section 7.05. Monies and Shares of Common Stock to Be Held in Trust. All monies and shares of Common Stock received by the
Trustee shall, until used or applied as herein provided, be held in trust for the purposes for which they were received. Money and shares of Common Stock held by the Trustee in trust hereunder need not be segregated from other funds except to the
extent required by law. The Trustee shall be under no liability for interest on any money received by it hereunder except as may be agreed from time to time by the Company and the Trustee. 

  
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 Section 7.06. Compensation and Expenses of Trustee. The Company covenants and
agrees to pay to the Trustee from time to time, and the Trustee shall be entitled to, compensation for all services rendered by it hereunder in any capacity (which shall not be limited by any provision of law in regard to the compensation of a
trustee of an express trust) as mutually agreed to in writing between the Trustee and the Company, and the Company will pay or reimburse the Trustee upon its request for all expenses, disbursements and advances incurred or made by the Trustee in
accordance with any of the provisions of this Indenture in any capacity thereunder (including the compensation and the reasonable expenses and disbursements of its agents and counsel and of all Persons not regularly in its employ) except any such
expense, disbursement or advance as shall have been caused by its gross negligence, willful misconduct or bad faith. The Company also covenants to indemnify the Trustee in any capacity under this Indenture and any other document or transaction
entered into in connection herewith and its agents and any authenticating agent for, and to hold them harmless against, any loss, claim, damage, liability or expense (including attorneys’ fees) incurred without gross negligence, willful
misconduct or bad faith on the part of the Trustee, its officers, directors, agents or employees, or such agent or authenticating agent, as the case may be, and arising out of or in connection with the acceptance or administration of this Indenture
or in any other capacity hereunder (whether such claims arise by or against the Company or a third person), including the reasonable costs and expenses of defending themselves against any claim of liability in the premises or enforcing the
Company’s obligations hereunder. The obligations of the Company under this Section 7.06 to compensate or indemnify the Trustee and to pay or reimburse the Trustee for expenses, disbursements and advances shall be secured by a senior claim
to which the Notes are hereby made subordinate on all money or property held or collected by the Trustee, except, subject to the effect of Section 6.05, funds held in trust herewith for the benefit of the Holders of particular Notes. The
Trustee’s right to receive payment of any amounts due under this Section 7.06 shall not be subordinate to any other liability or indebtedness of the Company. The obligation of the Company under this Section 7.06 shall survive the
satisfaction and discharge of this Indenture and the earlier resignation or removal of the Trustee. The Company need not pay for any settlement made without its consent, which consent shall not be unreasonably withheld. The indemnification provided
in this Section 7.06 shall extend to the officers, directors, agents and employees of the Trustee. 
 Without prejudice to any
other rights available to the Trustee under applicable law, when the Trustee and its agents and any authenticating agent incur expenses or render services after an Event of Default specified in Section 6.01(i) or Section 6.01(j) occurs,
the expenses and the compensation for the services are intended to constitute expenses of administration under any bankruptcy, insolvency or similar laws. 

Section 7.07. Officer’s Certificate as Evidence. Except as otherwise provided in Section 7.01, whenever in the
administration of the provisions of this Indenture the Trustee shall deem it necessary or desirable that a matter be proved or established prior to taking or omitting any action hereunder, such matter (unless other evidence in respect thereof be
herein specifically prescribed) may, in the absence of gross negligence or willful misconduct on the part of the Trustee, be deemed to be conclusively proved and established by an Officer’s Certificate delivered to the Trustee, and such
Officer’s Certificate, in the absence of gross negligence or willful misconduct on the part of the Trustee, shall be full warrant to the Trustee for any action taken or omitted by it under the provisions of this Indenture upon the faith
thereof. 
 Section 7.08. Eligibility of Trustee. There shall at all times be a Trustee hereunder which shall be a
Person that is eligible pursuant to the Trust Indenture Act (as if the Trust Indenture Act were applicable hereto) to act as such and has a combined capital and surplus of at least $50,000,000. If such Person publishes reports of condition at least
annually, pursuant to law or to the requirements of any supervising or examining authority, then for the purposes of this Section, the combined capital and surplus of such Person shall be deemed to be its combined capital and surplus as set forth in
its most recent report of condition so published. If at any time the Trustee shall cease to be eligible in accordance with the provisions of this Section, it shall resign immediately in the manner and with the effect hereinafter specified in this
Article. 
 Section 7.09. Resignation or Removal of Trustee. (a) The Trustee may at any time resign by giving
written notice of such resignation to the Company. Upon receiving such notice of resignation, the Company shall promptly notify all Holders and appoint a successor trustee by written instrument, in duplicate, executed by order of the Board of
Directors, one copy of which instrument shall be delivered to the resigning Trustee and one copy to the successor trustee. If no successor trustee shall have been so appointed and have accepted appointment within 60 days after the giving of such
notice of resignation to the Holders, the resigning Trustee may, upon ten Business Days’ notice to the Company and the Holders, petition any court of competent jurisdiction for the appointment of a successor trustee, or any Holder who has been
a bona fide holder of a Note or Notes for at least six months (or since the date of this Indenture) may, subject to the provisions of Section 6.11, on behalf of himself or herself and all others similarly situated, petition any such court for
the appointment of a successor trustee. Such court may thereupon, after such notice, if any, as it may deem proper and prescribe, appoint a successor trustee. 

  
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 (b) In case at any time any of the following shall occur: 

(i) the Trustee shall cease to be eligible in accordance with the provisions of Section 7.08 and shall fail to resign
after written request therefor by the Company or by any such Holder, or 
 (ii) the Trustee shall become incapable of acting,
or shall be adjudged a bankrupt or insolvent, or a receiver of the Trustee or of its property shall be appointed, or any public officer shall take charge or control of the Trustee or of its property or affairs for the purpose of rehabilitation,
conservation or liquidation, 
 then, in either case, the Company may by a Board Resolution remove the Trustee and appoint a successor trustee by written
instrument, in duplicate, executed by order of the Board of Directors, one copy of which instrument shall be delivered to the Trustee so removed and one copy to the successor trustee, or, subject to the provisions of Section 6.11, any Holder
who has been a bona fide holder of a Note or Notes for at least six months (or since the date of this Indenture) may, on behalf of himself or herself and all others similarly situated, petition any court of competent jurisdiction for the removal of
the Trustee and the appointment of a successor trustee. Such court may thereupon, after such notice, if any, as it may deem proper and prescribe, remove the Trustee and appoint a successor trustee. 

(c) The Holders of a majority in aggregate principal amount of the Notes at the time outstanding, as determined in accordance with
Section 8.04, may at any time remove the Trustee and nominate a successor trustee that shall be deemed appointed as successor trustee unless within ten days after notice to the Company of such nomination the Company objects thereto, in which
case the Trustee so removed or any Holder, upon the terms and conditions and otherwise as in Section 7.09(a) provided, may petition any court of competent jurisdiction for an appointment of a successor trustee. 

(d) Any resignation or removal of the Trustee and appointment of a successor trustee pursuant to any of the provisions of this
Section 7.09 shall become effective upon acceptance of appointment by the successor trustee as provided in Section 7.10. 

Section 7.10. Acceptance by Successor Trustee. Any successor trustee appointed as provided in Section 7.09 shall
execute, acknowledge and deliver to the Company and to its predecessor trustee an instrument accepting such appointment hereunder, and thereupon the resignation or removal of the predecessor trustee shall become effective and such successor trustee,
without any further act, deed or conveyance, shall become vested with all the rights, powers, duties and obligations of its predecessor hereunder, with like effect as if originally named as Trustee herein; but, nevertheless, on the written request
of the Company or of the successor trustee, the trustee ceasing to act shall, upon payment of any amounts then due it pursuant to the provisions of Section 7.06, execute and deliver an instrument transferring to such successor trustee all the
rights and powers of the trustee so ceasing to act. Upon request of any such successor trustee, the Company shall execute any and all instruments in writing for more fully and certainly vesting in and confirming to such successor trustee all such
rights and powers. Any trustee ceasing to act shall, nevertheless, retain a senior claim to which the Notes are hereby made subordinate on all money or property held or collected by such trustee as such, except for funds held in trust for the
benefit of Holders of particular Notes, to secure any amounts then due it pursuant to the provisions of Section 7.06. 

  
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 No successor trustee shall accept appointment as provided in this Section 7.10 unless at the
time of such acceptance such successor trustee shall be eligible under the provisions of Section 7.08. 
 Upon acceptance of
appointment by a successor trustee as provided in this Section 7.10, each of the Company and the successor trustee, at the written direction and at the expense of the Company shall deliver or cause to be delivered notice of the succession of
such trustee hereunder to the Holders. If the Company fails to deliver such notice within ten days after acceptance of appointment by the successor trustee, the successor trustee shall cause such notice to be delivered at the expense of the Company.

 Section 7.11. Succession by Merger, Etc. Any corporation or other entity into which the Trustee may be merged or
converted or with which it may be consolidated, or any corporation or other entity resulting from any merger, conversion or consolidation to which the Trustee shall be a party, or any corporation or other entity succeeding to all or substantially
all of the corporate trust business of the Trustee (including the administration of this Indenture), shall be the successor to the Trustee hereunder without the execution or filing of any paper or any further act on the part of any of the parties
hereto; provided that in the case of any corporation or other entity succeeding to all or substantially all of the corporate trust business of the Trustee such corporation or other entity shall be eligible under the provisions of Section
7.08. 
 In case at the time such successor to the Trustee shall succeed to the trusts created by this Indenture, any of the
Notes shall have been authenticated but not delivered, any such successor to the Trustee may adopt the certificate of authentication of any predecessor trustee or authenticating agent appointed by such predecessor trustee, and deliver such Notes so
authenticated; and in case at that time any of the Notes shall not have been authenticated, any successor to the Trustee or an authenticating agent appointed by such successor trustee may authenticate such Notes either in the name of any predecessor
trustee hereunder or in the name of the successor trustee; and in all such cases such certificates shall have the full force which it is anywhere in the Notes or in this Indenture provided that the certificate of the Trustee shall have;
provided, however, that the right to adopt the certificate of authentication of any predecessor trustee or to authenticate Notes in the name of any predecessor trustee shall apply only to its successor or successors by merger,
conversion or consolidation. 
 Section 7.12. Trustee’s Application for Instructions from the Company. Any
application by the Trustee for written instructions from the Company (other than with regard to any action proposed to be taken or omitted to be taken by the Trustee that affects the rights of the Holders of the Notes under this Indenture) may, at
the option of the Trustee, set forth in writing any action proposed to be taken or omitted by the Trustee under this Indenture and the date on and/or after which such action shall be taken or such omission shall be effective. The Trustee shall not
be liable to the Company for any action taken by, or omission of, the Trustee in accordance with a proposal included in such application on or after the date specified in such application (which date shall not be less than three Business Days after
the date any officer that the Company has indicated to the Trustee should receive such application actually receives such application, unless any such officer shall have consented in writing to any earlier date), unless, prior to taking any such
action (or the effective date in the case of any omission), the Trustee shall have received written instructions in accordance with this Indenture in response to such application specifying the action to be taken or omitted. 

  
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 ARTICLE 8 

CONCERNING THE HOLDERS 

Section 8.01. Action by Holders. Whenever in this Indenture it is provided that the Holders of a specified percentage of
the aggregate principal amount of the Notes may take any action (including the making of any demand or request, the giving of any notice, consent or waiver or the taking of any other action), the fact that at the time of taking any such action, the
Holders of such specified percentage have joined therein may be evidenced (a) by any instrument or any number of instruments of similar tenor executed by Holders in person or by agent or proxy appointed in writing, or (b) by the record of
the Holders voting in favor thereof at any meeting of Holders duly called and held in accordance with the provisions of Article 9, or (c) by a combination of such instrument or instruments and any such record of such a meeting of Holders.
Whenever the Company or the Trustee solicits the taking of any action by the Holders of the Notes, the Company or the Trustee may, but shall not be required to, fix in advance of such solicitation, a date as the record date for determining Holders
entitled to take such action. The record date if one is selected shall be not more than fifteen days prior to the date of commencement of solicitation of such action. 

Section 8.02. Proof of Execution by Holders. Subject to the provisions of Section 7.01, Section 7.02 and
Section 9.05, proof of the execution of any instrument by a Holder or its agent or proxy shall be sufficient if made in accordance with such reasonable rules and regulations as may be prescribed by the Trustee or in such manner as shall be
satisfactory to the Trustee. The holding of Notes shall be proved by the Note Register or by a certificate of the Note Registrar. The record of any Holders’ meeting shall be proved in the manner provided in Section 9.06. 

Section 8.03. Who Are Deemed Absolute Owners. The Company, the Trustee, any authenticating agent, any Paying Agent, any
Conversion Agent and any Note Registrar may deem the Person in whose name a Note shall be registered upon the Note Register to be, and may treat it as, the absolute owner of such Note (whether or not such Note shall be overdue and notwithstanding
any notation of ownership or other writing thereon made by any Person other than the Company or any Note Registrar) for the purpose of receiving payment of or on account of the principal (including any Fundamental Change Repurchase Price) of and
(subject to Section 2.03) accrued and unpaid interest on such Note, for conversion of such Note and for all other purposes; and neither the Company nor the Trustee nor any Paying Agent nor any Conversion Agent nor any Note Registrar shall be
affected by any notice to the contrary. All such payments or deliveries so made to any Holder for the time being, or upon its order, shall be valid, and, to the extent of the sums or shares of Common Stock so paid or delivered, effectual to satisfy
and discharge the liability for monies payable or shares deliverable upon any such Note. Notwithstanding anything to the contrary in this Indenture or the Notes following an Event of Default, any holder of a beneficial interest in a Global Note may
directly enforce against the Company, without the consent, solicitation, proxy, authorization or any other action of the Depositary or any other Person, such holder’s right to exchange such beneficial interest for a Note in certificated form in
accordance with the provisions of this Indenture. 
 Section 8.04. Company-Owned Notes Disregarded. In determining
whether the Holders of the requisite aggregate principal amount of Notes have concurred in any direction, consent, waiver or other action under this Indenture, Notes that are owned by the Company, by any Subsidiary thereof or by any Affiliate of the
Company or any Subsidiary thereof shall be disregarded and deemed not to be outstanding for the purpose of any such determination; provided that for the purposes of determining whether the Trustee shall be protected in relying on any such
direction, consent, waiver or other action only Notes that a Responsible Officer actually knows are so owned shall be so disregarded. Notes so owned that have been pledged in good faith may be regarded as outstanding for the purposes of this
Section 8.04 if the pledgee shall establish to the satisfaction of the Trustee the pledgee’s right to so act with respect to such Notes and that the pledgee is not the Company, a Subsidiary thereof or an Affiliate of the Company or a
Subsidiary thereof. In the case of a dispute as to such right, any decision by the Trustee taken upon the advice of counsel shall be full protection to the Trustee. Upon request of the Trustee, the Company shall furnish to the Trustee promptly an
Officer’s Certificate listing and identifying all Notes, if any, known by the Company to be owned or held by or for the account of any of the above described Persons; and, subject to Section 7.01, the Trustee shall be entitled to accept
such Officer’s Certificate as conclusive evidence of the facts therein set forth and of the fact that all Notes not listed therein are outstanding for the purpose of any such determination. 

  
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 Section 8.05. Revocation of Consents; Future Holders Bound. At any time prior
to (but not after) the evidencing to the Trustee, as provided in Section 8.01, of the taking of any action by the Holders of the percentage of the aggregate principal amount of the Notes specified in this Indenture in connection with such
action, any Holder of a Note that is shown by the evidence to be included in the Notes the Holders of which have consented to such action may, by filing written notice with the Trustee at its Corporate Trust Office and upon proof of holding as
provided in Section 8.02, revoke such action so far as concerns such Note. Except as aforesaid, any such action taken by the Holder of any Note shall be conclusive and binding upon such Holder and upon all future Holders and owners of such Note
and of any Notes issued in exchange or substitution therefor or upon registration of transfer thereof, irrespective of whether any notation in regard thereto is made upon such Note or any Note issued in exchange or substitution therefor or upon
registration of transfer thereof. 
 ARTICLE 9 

HOLDERS’ MEETINGS 

Section 9.01. Purpose of Meetings. A meeting of Holders may be called at any time and from time to time pursuant to the
provisions of this Article 9 for any of the following purposes: 
 (a) to give any notice to the Company or to the Trustee or to give
any directions to the Trustee permitted under this Indenture, or to consent to the waiving of any Default or Event of Default hereunder (in each case, as permitted under this Indenture) and its consequences, or to take any other action authorized to
be taken by Holders pursuant to any of the provisions of Article 6; 
 (b) to remove the Trustee and nominate a successor trustee pursuant
to the provisions of Article 7; 
 (c) to consent to the execution of an indenture or indentures supplemental hereto pursuant to the
provisions of Section 10.02; or 
 (d) to take any other action authorized to be taken by or on behalf of the Holders of any specified
aggregate principal amount of the Notes under any other provision of this Indenture or under applicable law. 
 Section 9.02.
Call of Meetings by Trustee. The Trustee may at any time call a meeting of Holders to take any action specified in Section 9.01, to be held at such time and at such place as the Trustee shall determine. Notice of every meeting of the
Holders, setting forth the time and the place of such meeting and in general terms the action proposed to be taken at such meeting and the establishment of any record date pursuant to Section 8.01, shall be delivered to Holders of such Notes.
Such notice shall also be delivered to the Company. Such notices shall be delivered not less than 20 nor more than 90 days prior to the date fixed for the meeting. 

  
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 Any meeting of Holders shall be valid without notice if the Holders of all Notes then outstanding
are present in person or by proxy or if notice is waived before or after the meeting by the Holders of all Notes then outstanding, and if the Company and the Trustee are either present by duly authorized representatives or have, before or after the
meeting, waived notice. 
 Section 9.03. Call of Meetings by Company or Holders. In case at any time the Company,
pursuant to a Board Resolution, or the Holders of at least 10% of the aggregate principal amount of the Notes then outstanding, shall have requested the Trustee to call a meeting of Holders, by written request setting forth in reasonable detail the
action proposed to be taken at the meeting, and the Trustee shall not have delivered the notice of such meeting within 20 days after receipt of such request, then the Company or such Holders may determine the time and the place for such meeting and
may call such meeting to take any action authorized in Section 9.01, by delivering notice thereof as provided in Section 9.02. 

Section 9.04. Qualifications for Voting. To be entitled to vote at any meeting of Holders a Person shall (a) be a
Holder of one or more Notes on the record date pertaining to such meeting or (b) be a Person appointed by an instrument in writing as proxy by a Holder of one or more Notes on the record date pertaining to such meeting. The only Persons who
shall be entitled to be present or to speak at any meeting of Holders shall be the Persons entitled to vote at such meeting and their counsel and any representatives of the Trustee and its counsel and any representatives of the Company and its
counsel. 
 Section 9.05. Regulations. Notwithstanding any other provisions of this Indenture, the Trustee may
make such reasonable regulations as it may deem advisable for any meeting of Holders, in regard to proof of the holding of Notes and of the appointment of proxies, and in regard to the appointment and duties of inspectors of votes, the submission
and examination of proxies, certificates and other evidence of the right to vote, and such other matters concerning the conduct of the meeting as it shall think fit. 

The Trustee shall, by an instrument in writing, appoint a temporary chairman of the meeting, unless the meeting shall have been called by the
Company or by Holders as provided in Section 9.03, in which case the Company or the Holders calling the meeting, as the case may be, shall in like manner appoint a temporary chairman. A permanent chairman and a permanent secretary of the
meeting shall be elected by vote of the Holders of a majority in aggregate principal amount of the Notes represented at the meeting and entitled to vote at the meeting. 

Subject to the provisions of Section 8.04, at any meeting of Holders each Holder or proxyholder shall be entitled to one vote for
each $1,000 principal amount of Notes held or represented by him or her; provided, however, that no vote shall be cast or counted at any meeting in respect of any Note challenged as not outstanding and ruled by the chairman of the
meeting to be not outstanding. The chairman of the meeting shall have no right to vote other than by virtue of Notes held by it or instruments in writing as aforesaid duly designating it as the proxy to vote on behalf of other Holders. Any meeting
of Holders duly called pursuant to the provisions of Section 9.02 or Section 9.03 may be adjourned from time to time by the Holders of a majority of the aggregate principal amount of Notes represented at the meeting, whether or not
constituting a quorum, and the meeting may be held as so adjourned without further notice. 

  
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 Section 9.06. Voting. The vote upon any resolution submitted to any meeting of
Holders shall be by written ballot on which shall be subscribed the signatures of the Holders or of their representatives by proxy and the outstanding aggregate principal amount of the Notes held or represented by them. The permanent chairman of the
meeting shall appoint two inspectors of votes who shall count all votes cast at the meeting for or against any resolution and who shall make and file with the secretary of the meeting their verified written reports in duplicate of all votes cast at
the meeting. A record in duplicate of the proceedings of each meeting of Holders shall be prepared by the secretary of the meeting and there shall be attached to said record the original reports of the inspectors of votes on any vote by ballot taken
thereat and affidavits by one or more Persons having knowledge of the facts setting forth a copy of the notice of the meeting and showing that said notice was delivered as provided in Section 9.02. The record shall show the aggregate principal
amount of the Notes voting in favor of or against any resolution. The record shall be signed and verified by the affidavits of the permanent chairman and secretary of the meeting and one of the duplicates shall be delivered to the Company and the
other to the Trustee to be preserved by the Trustee, the latter to have attached thereto the ballots voted at the meeting. 
 Any
record so signed and verified shall be conclusive evidence of the matters therein stated. 
 Section 9.07. No Delay of Rights
by Meeting. Nothing contained in this Article 9 shall be deemed or construed to authorize or permit, by reason of any call of a meeting of Holders or any rights expressly or impliedly conferred hereunder to make such call, any hindrance or delay
in the exercise of any right or rights conferred upon or reserved to the Trustee or to the Holders under any of the provisions of this Indenture or of the Notes. 

ARTICLE 10 

SUPPLEMENTAL INDENTURES 

Section 10.01. Supplemental Indentures Without Consent of Holders. The Company, when authorized by the resolutions of the
Board of Directors and the Trustee, at the Company’s expense, may from time to time and at any time amend or supplement this Indenture or the Notes for one or more of the following purposes: 

(a) to cure any ambiguity, omission, defect or inconsistency; 

(b) to provide for the assumption by a Successor Company of the obligations of the Company under this Indenture pursuant to Article 11; 

(c) to add guarantees with respect to the Notes; 

(d) to secure the Notes; 
 (e)
to add to the covenants or Events of Default of the Company for the benefit of the Holders or surrender any right or power conferred upon the Company; 

(f) to make any change that does not adversely affect the rights of any Holder other than as permitted or required by this Indenture; 

(g) in connection with any Merger Event, to provide that the notes are convertible into Reference Property, subject to the provisions of
Section 14.02, and make such related changes to the terms of the Notes to the extent expressly required by Section 14.07; 

  
 45 

 (h) comply with any requirement of the Commission in connection with the qualification of this
Indenture under the Trust Indenture Act to the extent this Indenture is qualified thereunder; 
 (i) provide for the issuance of additional
Notes; 
 (j) provide for the appointment of a successor Trustee, Note Registrar, Paying Agent, Bid Solicitation Agent or Conversion Agent;

 (k) comply with the rules of any applicable securities depositary in a manner that does not adversely affect the rights of any Holder;

 (l) irrevocably elect or eliminate one of the Settlement Methods and/or irrevocably elect a Specified Dollar Amount; 

(m) increase the Conversion Rate as provided in this Indenture; or 

(n) to conform the provisions of this Indenture or the Notes to the “Description of Notes” section of the Offering Memorandum. 

Upon the written request of the Company, the Trustee is hereby authorized to join with the Company in the execution of any such supplemental
indenture, to make any further appropriate agreements and stipulations that may be therein contained, but the Trustee shall not be obligated to, but may in its discretion, enter into any supplemental indenture that affects the Trustee’s own
rights, duties or immunities under this Indenture or otherwise. 
 Any supplemental indenture authorized by the provisions of this
Section 10.01 may be executed by the Company and the Trustee without the consent of the Holders of any of the Notes at the time outstanding, notwithstanding any of the provisions of Section 10.02. 

Section 10.02. Supplemental Indentures with Consent of Holders. With the consent (evidenced as provided in Article 8) of
the Holders of at least a majority of the aggregate principal amount of the Notes then outstanding (determined in accordance with Article 8 and including, without limitation, consents obtained in connection with a repurchase of, or tender or
exchange offer for, Notes), the Company, when authorized by the resolutions of the Board of Directors and the Trustee, at the Company’s expense, may from time to time and at any time enter into an indenture or indentures supplemental hereto for
the purpose of adding any provisions to or changing in any manner or eliminating any of the provisions of this Indenture, any supplemental indenture or the Notes or of modifying in any manner the rights of the Holders; provided,
however, that, without the consent of each Holder of an outstanding Note affected, no such supplemental indenture shall: 
 (a)
reduce the principal amount of Notes whose Holders must consent to an amendment; 
 (b) reduce the rate of or extend the stated time for
payment of interest on any Note; 
 (c) reduce the principal of or extend the Maturity Date of any Note; 

(d) make any change that adversely affects the conversion rights of any Notes other than as permitted or required by this Indenture; 

  
 46 

 (e) reduce the Fundamental Change Repurchase Price of any Note or amend or modify in any manner
adverse to the Holders the Company’s obligation to make such payments, whether through an amendment or waiver of provisions in the covenants, definitions or otherwise; 

(f) make any Note payable in a currency, or at a place of payment, other than that stated in the Note; 

(g) change the ranking of the Notes; 

(h) eliminate the contractual right of any Holder to institute suit for the enforcement right to receive payment or delivery, as the case may
be, of the principal (including the Fundamental Change Repurchase Price, if applicable) of, accrued and unpaid interest, if any, on, and the consideration due upon conversion of, its Notes, on or after the respective due dates expressed or provided
for in the Notes or this Indenture; or 
 (i) make any change in this Article 10 that requires each Holder’s consent or in the waiver
provisions in Section 6.02 or Section 6.09. 
 Upon the written request of the Company, and upon the filing with the Trustee of
evidence of the consent of Holders as aforesaid and subject to Section 10.05, the Trustee shall join with the Company in the execution of such supplemental indenture unless such supplemental indenture affects the Trustee’s own rights,
duties or immunities under this Indenture or otherwise, in which case the Trustee may in its discretion, but shall not be obligated to, enter into such supplemental indenture. 

Holders do not need under this Section 10.02 to approve the particular form of any proposed supplemental indenture. It shall be
sufficient if such Holders approve the substance thereof. After any such supplemental indenture becomes effective, the Company shall deliver to the Holders a notice briefly describing such supplemental indenture. However, the failure to give such
notice to all the Holders, or any defect in the notice, will not impair or affect the validity of the supplemental indenture. 

Section 10.03. Effect of Supplemental Indentures. Upon the execution of any supplemental indenture pursuant to the
provisions of this Article 10, this Indenture shall be and be deemed to be modified and amended in accordance therewith and the respective rights, limitation of rights, obligations, duties and immunities under this Indenture of the Trustee, the
Company and the Holders shall thereafter be determined, exercised and enforced hereunder subject in all respects to such modifications and amendments and all the terms and conditions of any such supplemental indenture shall be and be deemed to be
part of the terms and conditions of this Indenture for any and all purposes. 
 Section 10.04. Notation on Notes.
Notes authenticated and delivered after the execution of any supplemental indenture pursuant to the provisions of this Article 10 may, at the Company’s expense, bear a notation as to any matter provided for in such supplemental indenture. If
the Company or the Trustee shall so determine, new Notes so modified as to conform, in the opinion of the Board of Directors, to any modification of this Indenture contained in any such supplemental indenture may, at the Company’s expense, be
prepared and executed by the Company, authenticated, upon receipt of a Company Order, by the Trustee (or an authenticating agent duly appointed by the Trustee pursuant to Section 17.10) and delivered in exchange for the Notes then outstanding,
upon surrender of such Notes then outstanding. 

  
 47 

 Section 10.05. Evidence of Compliance of Supplemental Indenture to Be Furnished
Trustee. In addition to the documents required by Section 17.05, the Trustee shall receive an Officer’s Certificate and an Opinion of Counsel as conclusive evidence that any supplemental indenture executed pursuant hereto complies with
the requirements of this Article 10 and is permitted or authorized by this Indenture such Opinion of Counsel to include a customary legal opinion stating that such supplemental indenture is the valid and binding obligation of the Company, subject to
customary exceptions and qualifications. 
 ARTICLE 11 

CONSOLIDATION, MERGER, SALE, CONVEYANCE AND LEASE 

Section 11.01. Company May Consolidate, Etc. on Certain Terms. Subject to the provisions of Section 11.02, the Company
shall not consolidate with, merge with or into, or sell, convey, transfer or lease all or substantially all of the consolidated assets of the Company and the Company’s Subsidiaries, taken as a whole, to another Person, unless: 

(a) the resulting, surviving or transferee Person (the “Successor Company”), if not the Company, shall be a corporation
organized and existing under the laws of the United States of America, any State thereof or the District of Columbia, and the Successor Company (if not the Company) shall expressly assume, by supplemental indenture all of the obligations of the
Company under the Notes and this Indenture; 
 (b) immediately after giving effect to such transaction, no Default or Event of Default shall
have occurred and be continuing under this Indenture; and 
 (c) if the Company is not the Successor Company, the Successor Company shall
have delivered to the Trustee an Officer’s Certificate and Opinion of Counsel, each stating that such consolidation, merger, sale, conveyance, transfer or lease complies with this Indenture and that such supplemental indenture is authorized or
permitted by this Indenture and an opinion of counsel stating that the supplemental indenture is the valid and binding obligation of the Successor Company, subject to customary exceptions and qualifications. 

Section 11.02. Successor Corporation to Be Substituted. In case of any such consolidation, merger, sale, conveyance,
transfer or lease and upon the assumption by the Successor Company, by supplemental indenture, executed and delivered to the Trustee and satisfactory in form to the Trustee, of the due and punctual payment of the principal of and accrued and unpaid
interest on all of the Notes, the due and punctual delivery and/or payment, as the case may be, of any consideration due upon conversion of the Notes and the due and punctual performance of all of the covenants and conditions of this Indenture to be
performed by the Company, such Successor Company (if not the Company) shall succeed to and, except in the case of a lease of all or substantially all of the consolidated assets of the Company and the Company’s Subsidiaries, taken as a whole,
shall be substituted for the Company, with the same effect as if it had been named herein as the party of the first part, and the Company shall be discharged from its obligations under the Notes and this Indenture (except in the case of a lease of
all or substantially all of the consolidated assets of the Company and the Company’s Subsidiaries, taken as a whole). Such Successor Company thereupon may cause to be signed, and may issue either in its own name or in the name of the Company
any or all of the Notes issuable hereunder which theretofore shall not have been signed by the Company and delivered to the Trustee; and, upon the order of such Successor Company instead of the Company and subject to all the terms, conditions and
limitations in this Indenture prescribed, the Trustee shall authenticate and shall deliver, or cause to be authenticated and delivered, any Notes that previously shall have been signed and delivered by the Officers of the Company to the Trustee for
authentication, and any Notes that such Successor Company thereafter shall cause to be signed and delivered to the Trustee for that purpose. All the Notes so issued shall in all respects have the same legal rank and benefit under this Indenture as
the Notes theretofore or thereafter issued in accordance with the terms of this Indenture as though all of such Notes had been issued at the date of the execution hereof. In the event of any such consolidation, merger, sale, conveyance or transfer
(but not in the case of a lease), upon compliance with this Article 11 the Person named as the “Company” in the first paragraph of this Indenture (or any successor that shall thereafter have become such in the manner prescribed in this
Article 11) may be dissolved, wound up and liquidated at any time thereafter and, except in the case of a lease, such Person shall be released from its liabilities as obligor and maker of the Notes and from its obligations under this Indenture and
the Notes. 

  
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 In case of any such consolidation, merger, sale, conveyance, transfer or lease, such changes in
phraseology and form (but not in substance) may be made in the Notes thereafter to be issued as may be appropriate. 

Section 11.03. Opinion of Counsel to Be Given to Trustee. If a supplemental indenture is required pursuant to this Article
11, no such consolidation, merger, sale, conveyance, transfer or lease shall be effective unless the Trustee shall receive an Officer’s Certificate and an Opinion of Counsel as conclusive evidence that any such consolidation, merger, sale,
conveyance, transfer or lease and any such assumption complies with the provisions of this Article 11. 
 ARTICLE 12 

IMMUNITY OF INCORPORATORS, STOCKHOLDERS, OFFICERS AND
DIRECTORS 
 Section 12.01. Indenture and Notes Solely Corporate Obligations. No recourse for the payment
of the principal of or accrued and unpaid interest on, or the payment or delivery of consideration due upon conversion of, any Note, nor for any claim based thereon or otherwise in respect thereof, and no recourse under or upon any obligation,
covenant or agreement of the Company in this Indenture or in any supplemental indenture or in any Note, nor because of the creation of any indebtedness represented thereby, shall be had against any incorporator, stockholder, employee, agent, Officer
or director or Subsidiary, as such, past, present or future, of the Company or of any successor corporation, either directly or through the Company or any successor corporation, whether by virtue of any constitution, statute or rule of law, or by
the enforcement of any assessment or penalty or otherwise; it being expressly understood that all such liability is hereby expressly waived and released as a condition of, and as a consideration for, the execution of this Indenture and the issue of
the Notes. 
 ARTICLE 13 

[INTENTIONALLY OMITTED] 

ARTICLE 14 

CONVERSION OF NOTES 

Section 14.01. Conversion Privilege. (a) Subject to and upon compliance with the provisions of this Article 14, each
Holder of a Note shall have the right, at such Holder’s option, to convert all or any portion (if the portion to be converted is $1,000 principal amount or an integral multiple thereof) of such Note (i) subject to satisfaction of the
conditions described in Section 14.01(b), at any time prior to the close of business on the Business Day immediately preceding December 15, 2022 under the circumstances and during the periods set forth in Section 14.01(b), and
(ii) regardless of the conditions described in Section 14.01(b), on or after December 15, 2022 and prior to the close of business on the second Scheduled Trading Day immediately preceding the Maturity Date, in each case, at an initial
conversion rate of 15.8554 shares of Common Stock (subject to adjustment as provided in this Article 14, the “Conversion Rate”) per $1,000 principal amount of Notes (subject to, and in accordance with, the settlement
provisions of Section 14.02, the “Conversion Obligation”). 

  
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 (b) (i) Prior to the close of business on the Business Day immediately preceding
December 15, 2022, a Holder may surrender all or any portion of its Notes for conversion at any time during the five Business Day period immediately after any five consecutive Trading Day period (the “Measurement Period”) in
which the Trading Price per $1,000 principal amount of Notes, as determined following a request by a Holder of Notes in accordance with this subsection (b)(i), for each Trading Day of the Measurement Period was less than 98% of the product of the
Last Reported Sale Price of the Common Stock on each such Trading Day and the Conversion Rate on each such Trading Day (the “Trading Price Condition”). The Trading Prices shall be determined by the Bid Solicitation Agent pursuant to
this subsection (b)(i) and the definition of Trading Price set forth in this Indenture. The Company shall provide written notice to the Bid Solicitation Agent (if other than the Company) of the three independent nationally recognized securities
dealers selected by the Company pursuant to the definition of Trading Price, along with appropriate contact information for each. The Bid Solicitation Agent (if other than the Company) shall have no obligation to solicit the Trading Price per $1,000
principal amount of Notes unless the Company has requested such solicitation, and the Company shall have no obligation to make such request (or, if the Company is acting as Bid Solicitation Agent, the Company shall have no obligation to determine
the Trading Price per $1,000 principal amount of Notes) unless a Holder of at least $2,000,000 aggregate principal amount of Notes provides the Company with reasonable evidence that the Trading Price per $1,000 principal amount of Notes on any
Trading Day would be less than 98% of the product of the Last Reported Sale Price of the Common Stock on such Trading Day and the Conversion Rate on such Trading Day, at which time the Company shall instruct the Bid Solicitation Agent (if other than
the Company) to solicit, or if the Company is acting as Bid Solicitation Agent, the Company shall solicit, such bids beginning on the next Trading Day and on each successive Trading Day until the Trading Price per $1,000 principal amount of Notes is
greater than or equal to 98% of the product of the Last Reported Sale Price of the Common Stock and the Conversion Rate. The Company shall determine the Trading Price per $1,000 amount of Notes in accordance with the bids solicited by the Bid
Solicitation Agent. If (x) the Company is not acting as Bid Solicitation Agent, and the Company does not instruct the Bid Solicitation Agent to solicit bids when obligated as provided in the preceding sentence, or if the Company instructs the
Bid Solicitation Agent to obtain bids and the Bid Solicitation Agent fails to make such solicitation, or (y) the Company is acting as Bid Solicitation Agent and the Company fails to make such solicitation when obligated as provided in the
preceding sentence, then, in either case, the Trading Price per $1,000 principal amount of Notes shall be deemed to be less than 98% of the product of the Last Reported Sale Price of the Common Stock and the Conversion Rate on each Trading Day of
such failure. If the Trading Price Condition has been met on any Trading Day, the Company shall so notify the Holders, the Trustee and the Conversion Agent (if other than the Trustee) on or within one Business Day of such Trading Day. If, at any
time after the Trading Price Condition has been met, the Trading Price per $1,000 principal amount of Notes is greater than or equal to 98% of the product of the Last Reported Sale Price of the Common Stock and the Conversion Rate for such Trading
Day, the Company shall so notify the Holders of the Notes, the Trustee and the Conversion Agent (if other than the Trustee) that the Trading Price Condition is no longer met and thereafter neither the Company nor the Bid Solicitation Agent (if other
than the Company) shall be required to solicit bids again until another qualifying request is made as provided above.  

  
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 (ii) If, prior to the close of business on the Business Day immediately preceding
December 15, 2022, the Company elects to: 
 (A) issue to all or substantially all holders of the Common Stock any
rights, options or warrants (other than pursuant to a stockholders rights plan, so long as such rights have not separated from the shares of the Common Stock) entitling them, for a period of not more than 60 calendar days after the announcement date
of such issuance, to subscribe for or purchase shares of the Common Stock at a price per share that is less than the average of the Last Reported Sale Prices of the Common Stock for the 10 consecutive Trading Day period ending on, and including, the
Trading Day immediately preceding the date of announcement of such issuance; or 
 (B) distribute to all or substantially all
holders of the Common Stock the Company’s assets, securities or rights to purchase securities of the Company (other than pursuant to a stockholders rights plan, so long as such rights have not separated from the shares of the Common Stock),
which distribution has a per share value, as reasonably determined by the Board of Directors, exceeding 10% of the Last Reported Sale Price of the Common Stock on the Trading Day preceding the date of announcement for such distribution, 

then, in either case, the Company shall notify all Holders of the Notes, the Trustee and the Conversion Agent (if other than the Trustee) (such
notification, the “Certain Distributions Notification”) (x) at least 50 Scheduled Trading Days prior to or (y) if in the Certain Distributions Notification the Company irrevocably elects Physical Settlement in respect of
any conversions with Conversion Dates that occur after delivery to the Holders of the Certain Distributions Notification until the Certain Distributions Conversion Period End Date, at least 10 Scheduled Trading Days prior to, in either case, the
Ex-Dividend Date for such issuance or distribution. Once the Company has given such notice, a Holder may surrender all or any portion of its Notes for conversion at any time until the earlier of (1) the close of business on the Business Day
immediately preceding the Ex-Dividend Date for such issuance or distribution and (2) the Company’s announcement that such issuance or distribution will not take place (such earlier date and time, the “Certain Distributions
Conversion Period End Date”). 
 Holders may not convert their Notes pursuant to this Section 14.01(b)(ii) if they participate (other
than in the case of a share split or share combination), at the same time and upon the same terms as holders of the Common Stock and solely as a result of holding the Notes, in any of the transactions described above without having to convert their
Notes as if they held a number of shares of Common Stock equal to the applicable Conversion Rate, multiplied by the principal amount (expressed in thousands) of Notes held by such Holder. 

(iii) If a transaction or event that constitutes a Fundamental Change or a Make-Whole Fundamental Change occurs prior to the
close of business on the Business Day immediately preceding December 15, 2022, regardless of whether a Holder has the right to require the Company to repurchase the Notes pursuant to Section 15.02, or if the Company is a party to a Merger
Event (other than a Merger Event that is solely for the purpose of changing the Company’s jurisdiction of organization that (x) does not constitute a Fundamental Change or a Make-Whole Fundamental Change and (y) results in a
reclassification, conversion or exchange of outstanding shares of the Common Stock solely into shares of Common Stock of the surviving entity and such Common Stock becomes Reference Property for the Notes) that occurs prior to the close of business
on the Business Day immediately preceding December 15, 2022 (each such Fundamental Change, Make-Whole Fundamental Change or Merger Event, a “Corporate Event”), all or any portion of a Holder’s Notes may be surrendered for
conversion at any time from or after the effective date of the Corporate Event until the earlier of (x) 35 Trading Days after the effective date of such Corporate Event (or, if the Company gives notice after the effective date of such
transaction or event until 35 Trading Days after the date of such notice) or, if such Corporate Event also constitutes a Fundamental Change, until the close of business on the Business Day immediately preceding the related Fundamental Change
Repurchase Date and (y) the second Scheduled Trading Day immediately preceding the Maturity Date. The Company shall notify Holders, the Trustee and the Conversion Agent (if other than the Trustee) as promptly as practicable following the date
the Company publicly announces the effective date of such Corporate Event, but in no event later than the effective date of such Corporate Event. 

  
 51 

 (iv) Prior to the close of business on the Business Day immediately preceding
December 15, 2022, a Holder may surrender all or any portion of its Notes for conversion at any time during any calendar quarter commencing after the calendar quarter ending on June 30, 2018 (and only during such calendar quarter), if the
Last Reported Sale Price of the Common Stock for at least 20 Trading Days (whether or not consecutive) during the period of 30 consecutive Trading Days ending on, and including, the last Trading Day of the immediately preceding calendar quarter is
greater than or equal to 130% of the Conversion Price on each applicable Trading Day. 
 Section 14.02. Conversion Procedure;
Settlement Upon Conversion. 
 (a) Subject to this Section 14.02, Section 14.03(b) and Section 14.07(a), upon conversion
of any Note, the Company shall pay or deliver, as the case may be, to the converting Holder, in respect of each $1,000 principal amount of Notes being converted, cash (“Cash Settlement”), shares of Common Stock, together with cash,
if applicable, in lieu of delivering any fractional share of Common Stock in accordance with subsection (j) of this Section 14.02 (“Physical Settlement”) or a combination of cash and shares of Common Stock, together with
cash, if applicable, in lieu of delivering any fractional share of Common Stock in accordance with subsection (j) of this Section 14.02 (“Combination Settlement”), at its election, as set forth in this Section 14.02. 

(i) All conversions for which the relevant Conversion Date occurs on or after December 15, 2022 shall be settled using the
same Settlement Method. 
 (ii) Except for any conversions for which the relevant Conversion Date occurs on or after
December 15, 2022, the Company shall use the same Settlement Method for all conversions with the same Conversion Date, but the Company shall not have any obligation to use the same Settlement Method with respect to conversions with different
Conversion Dates. 
 (iii) If, in respect of any Conversion Date (or the period described in the third immediately succeeding
set of parentheses, as the case may be), the Company elects to deliver a notice (the “Settlement Notice”) of the relevant Settlement Method in respect of such Conversion Date (or such period, as the case may be), the Company shall
deliver such Settlement Notice to the Conversion Agent and converting Holders no later than the close of business on the first Trading Day immediately following the relevant Conversion Date (or, in the case of any conversions for which the relevant
Conversion Date occurs on or after December 15, 2022, no later than December 15, 2022). If the Company does not elect a Settlement Method prior to the deadline set forth in the immediately preceding sentence, the Company shall no longer
have the right to elect Cash Settlement or Physical Settlement and the Company shall be deemed to have elected Combination Settlement in respect of its Conversion Obligation, and the Specified Dollar Amount per $1,000 principal amount of Notes shall
be equal to $1,000. Such Settlement Notice shall specify the relevant Settlement Method and in the case of an election of Combination Settlement, the relevant Settlement Notice shall indicate the Specified Dollar Amount per $1,000 principal amount
of Notes. If the Company delivers a Settlement Notice electing Combination Settlement in respect of its Conversion Obligation but does not indicate a Specified Dollar Amount per $1,000 principal amount of Notes in such Settlement Notice, the
Specified Dollar Amount per $1,000 principal amount of Notes shall be deemed to be $1,000. Notwithstanding anything to the contrary in the foregoing, the Company shall be permitted to irrevocably elect Physical Settlement in any Certain
Distributions Notification and any such election would be applicable to conversions with Conversion Dates that occur after delivery to the Holders of the Certain Distributions Notification until the Certain Distributions Conversion Period End Date.

  
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 (iv) The cash, shares of Common Stock or combination of cash and shares of Common
Stock in respect of any conversion of Notes (the “Settlement Amount”) shall be computed as follows: 
 (A)
if the Company elects to satisfy its Conversion Obligation in respect of such conversion by Physical Settlement, the Company shall deliver to the converting Holder in respect of each $1,000 principal amount of Notes being converted a number of
shares of Common Stock equal to the Conversion Rate in effect on the Conversion Date (plus cash in lieu of any fractional share of Common Stock issuable upon conversion); 

(B) if the Company elects to satisfy its Conversion Obligation in respect of such conversion by Cash Settlement, the Company
shall pay to the converting Holder in respect of each $1,000 principal amount of Notes being converted cash in an amount equal to the sum of the Daily Conversion Values for each of the 40 consecutive Trading Days during the related Observation
Period; and 
 (C) if the Company elects (or is deemed to have elected) to satisfy its Conversion Obligation in respect of
such conversion by Combination Settlement, the Company shall pay or deliver, as the case may be, in respect of each $1,000 principal amount of Notes being converted, a Settlement Amount equal to the sum of the Daily Settlement Amounts for each of
the 40 consecutive Trading Days during the related Observation Period (plus cash in lieu of any fractional share of Common Stock issuable upon conversion). 

(v) The Daily Settlement Amounts (if applicable) and the Daily Conversion Values (if applicable) shall be determined by the
Company promptly following the last day of the Observation Period. Promptly after such determination of the Daily Settlement Amounts or the Daily Conversion Values, as the case may be, and the amount of cash payable in lieu of delivering any
fractional share of Common Stock, the Company shall notify the Trustee and the Conversion Agent (if other than the Trustee) of the Daily Settlement Amounts or the Daily Conversion Values, as the case may be, and the amount of cash payable in lieu of
delivering fractional shares of Common Stock. The Trustee and the Conversion Agent (if other than the Trustee) shall have no responsibility for any such determination. 

(b) Subject to Section 14.02(e), before any Holder of a Note shall be entitled to convert a Note as set forth above, such Holder shall
(i) in the case of a Global Note, comply with the Applicable Procedures of the Depositary in effect at that time and, if required, pay funds equal to the interest payable on the next Interest Payment Date to which such Holder is not entitled as
set forth in Section 14.02(h) and, if required, pay all transfer or similar taxes, if any, pursuant to Section 14.02(e) and (ii) in the case of a Physical Note (1) complete, manually sign and deliver an irrevocable notice to the
Conversion Agent as set forth in the Form of Notice of Conversion (or a facsimile thereof) (a “Notice of Conversion”) at the office of the Conversion Agent and state in writing therein the principal amount of Notes to be converted
and the name or names (with addresses) in which such Holder wishes the certificate or certificates for any shares of Common Stock to be delivered upon settlement of the Conversion Obligation to be registered, (2) surrender such Notes, duly
endorsed to the Company or in blank (and accompanied by appropriate endorsement and transfer documents), at the office of the Conversion Agent, (3) if required, furnish appropriate endorsements and transfer documents, (4) if required, pay
funds equal to interest payable on the next Interest Payment Date to which such Holder is not entitled as set forth in Section 14.02(h) and (5) if required, pay all transfer or similar taxes, if any, pursuant to Section 14.02(e). The
Trustee (and if different, the Conversion Agent) shall notify the Company of any conversion pursuant to this Article 14 on the Conversion Date for such conversion. No Notice of Conversion with respect to any Notes may be surrendered by a Holder
thereof if such Holder has also delivered a Fundamental Change Repurchase Notice to the Company in respect of such Notes and has not validly withdrawn such Fundamental Change Repurchase Notice in accordance with Section 15.03. 

  
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 If more than one Note shall be surrendered for conversion at one time by the same Holder, the
Conversion Obligation with respect to such Notes shall be computed on the basis of the aggregate principal amount of the Notes (or specified portions thereof to the extent permitted thereby) so surrendered. 

(c) A Note shall be deemed to have been converted immediately prior to the close of business on the date (the “Conversion
Date”) that the Holder has complied with the requirements set forth in subsection (b) above. Except as set forth in Section 14.03(b) and Section 14.07(a), the Company shall pay or deliver, as the case may be, the consideration due
in respect of the Conversion Obligation on the second Business Day immediately following the relevant Conversion Date, if the Company elects to satisfy its Conversion Obligation through Physical Settlement, or on the second Business Day immediately
following the last Trading Day of the Observation Period, if the Company elects to satisfy its Conversion Obligation through any other Settlement Method. If any shares of Common Stock are due to a converting Holder, the Company shall issue or cause
to be issued, and deliver (if applicable) to the Conversion Agent or to such Holder, or such Holder’s nominee or nominees, the full number of shares of Common Stock to which such Holder shall be entitled, in book-entry format through the
Depositary, in satisfaction of the Company’s Conversion Obligation. 
 (d) In case any Note shall be surrendered for partial
conversion, the Company shall execute and the Trustee shall authenticate and deliver to or upon the written order of the Holder of the Note so surrendered a new Note or Notes in authorized denominations in an aggregate principal amount equal to the
unconverted portion of the surrendered Note, without payment of any service charge by the converting Holder but, if required by the Company or Trustee, with payment of a sum sufficient to cover any documentary, stamp or similar issue or transfer tax
or similar governmental charge required by law or that may be imposed in connection therewith as a result of the name of the Holder of the new Notes issued upon such conversion being different from the name of the Holder of the old Notes surrendered
for such conversion. 
 (e) If a Holder submits a Note for conversion, the Company shall pay any documentary, stamp or similar issue or
transfer tax due on the issue of any shares of Common Stock upon conversion, unless the tax is due because the Holder requests such shares to be issued in a name other than the Holder’s name, in which case the Holder shall pay that tax. The
Conversion Agent may refuse to deliver the certificates representing the shares of Common Stock being issued in a name other than the Holder’s name until the Trustee receives a sum sufficient to pay any tax that is due by such Holder in
accordance with the immediately preceding sentence. 

  
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 (f) Except as provided in Section 14.04, no adjustment shall be made for dividends on any
shares of Common Stock issued upon the conversion of any Note as provided in this Article 14. 
 (g) Upon the conversion of an interest in a
Global Note, the Trustee, or the Custodian at the direction of the Trustee, shall make a notation on such Global Note as to the reduction in the principal amount represented thereby. The Company shall notify the Trustee in writing of any conversion
of Notes effected through any Conversion Agent other than the Trustee. 
 (h) Upon conversion, a Holder shall not receive any
separate cash payment for accrued and unpaid interest, if any, except as set forth below. The Company’s settlement of the full Conversion Obligation shall be deemed to satisfy in full its obligation to pay the principal amount of the Note and
accrued and unpaid interest, if any, to, but excluding, the relevant Conversion Date. As a result, accrued and unpaid interest, if any, to, but excluding, the relevant Conversion Date shall be deemed to be paid in full rather than cancelled,
extinguished or forfeited. Upon a conversion of Notes into a combination of cash and shares of Common Stock, accrued and unpaid interest will be deemed to be paid first out of the cash paid upon such conversion. Notwithstanding the foregoing, if
Notes are converted after the close of business on a Regular Record Date but prior to the open of business on the immediately following Interest Payment Date, Holders of such Notes as of the close of business on such Regular Record Date will receive
the full amount of interest payable on such Notes on such Interest Payment Date notwithstanding the conversion. However, Notes surrendered for conversion during the period from the close of business on any Regular Record Date to the open of business
on the immediately following Interest Payment Date must be accompanied by funds equal to the amount of interest payable on the Notes so converted on the corresponding Interest Payment Date (regardless of whether the converting Holder was the Holder
of record on the corresponding Regular Record Date); provided that no such payment shall be required (1) for conversions following the close of business on the Regular Record Date immediately preceding the Maturity Date; (2) if the
Company has specified a Fundamental Change Repurchase Date that is after a Regular Record Date and on or prior to the Business Day immediately following the corresponding Interest Payment Date; or (3) to the extent of any Defaulted Amounts, if
any Defaulted Amounts exists at the time of conversion with respect to such Note. Therefore, for the avoidance of doubt, all Holders of record on the Regular Record Date immediately preceding the Maturity Date and any Fundamental Change Repurchase
Date described in clause (2) above shall receive the full interest payment due on the Maturity Date or other applicable Interest Payment Date in cash regardless of whether their Notes have been converted and/or repurchased, as applicable,
following such Regular Record Date. 
 (i) The Person in whose name the shares of Common Stock shall be issuable upon conversion
shall be treated as a stockholder of record as of the close of business on the relevant Conversion Date (if the Company elects to satisfy the related Conversion Obligation by Physical Settlement) or the last Trading Day of the relevant Observation
Period (if the Company elects to satisfy the related Conversion Obligation by Combination Settlement), as the case may be. Upon a conversion of Notes, such Person shall no longer be a Holder of such Notes surrendered for conversion. 

  
 55 

 (j) The Company shall not issue any fractional share of Common Stock upon conversion of the Notes
and shall instead pay cash in lieu of delivering any fractional share of Common Stock issuable upon conversion based on the Daily VWAP for the relevant Conversion Date (in the case of Physical Settlement) or based on the Daily VWAP for the last
Trading Day of the relevant Observation Period (in the case of Combination Settlement). For each Note surrendered for conversion, if the Company has elected Combination Settlement, the full number of shares that shall be issued upon conversion
thereof shall be computed on the basis of the aggregate Daily Settlement Amounts for the relevant Observation Period and any fractional shares remaining after such computation shall be paid in cash. 

Section 14.03. Increased Conversion Rate Applicable to Certain Notes Surrendered in Connection with Make-Whole Fundamental
Changes. (a) If the Effective Date of a Make-Whole Fundamental Change occurs prior to the Maturity Date and a Holder elects to convert its Notes in connection with such Make-Whole Fundamental Change, the Company shall, under the
circumstances described below, increase the Conversion Rate for the Notes so surrendered for conversion by a number of additional shares of Common Stock (the “Additional Shares”), as described below. A conversion of
Notes shall be deemed for these purposes to be “in connection with” such Make-Whole Fundamental Change if the relevant Conversion Date occurs during the period from, and including, the Effective Date of the Make-Whole Fundamental Change up
to, and including, the close of business on the Business Day immediately prior to the related Fundamental Change Repurchase Date (or, in the case of a Make-Whole Fundamental Change that would have been a Fundamental Change but for the proviso
in clause (b) of the definition thereof, the 35th Trading Day immediately following the Effective Date of such Make-Whole Fundamental Change) (such period, the “Make-Whole Fundamental Change Period”).  

(b) Upon surrender of Notes for conversion in connection with a Make-Whole Fundamental Change pursuant to Section 14.01(b)(iii),
the Company shall, at its option, satisfy the related Conversion Obligation by Physical Settlement, Cash Settlement or Combination Settlement in accordance with Section 14.02; provided, however, that if, at the effective time of a
Make-Whole Fundamental Change described in clause (b) of the definition of Fundamental Change, the Reference Property following such Make-Whole Fundamental Change is composed entirely of cash, for any conversion of Notes following the Effective
Date of such Make-Whole Fundamental Change, the Conversion Obligation shall be calculated based solely on the Stock Price for the transaction and shall be deemed to be an amount of cash per $1,000 principal amount of converted Notes equal to the
Conversion Rate (including any adjustment for Additional Shares), multiplied by such Stock Price. In such event, the Conversion Obligation shall be paid to Holders in cash on the second Business Day following the Conversion Date. The Company
shall notify the Holders, the Trustee and the Conversion Agent (if other than the Trustee) of Notes of the Effective Date of any Make-Whole Fundamental Change no later than five Business Days after such Effective Date. 

(c) The number of Additional Shares, if any, by which the Conversion Rate shall be increased shall be determined by reference to the
table below, based on the date on which the Make-Whole Fundamental Change occurs or becomes effective (the “Effective Date”) and the price paid (or deemed to be paid) per share of the Common Stock in the Make-Whole Fundamental
Change (the “Stock Price”). If the holders of the Common Stock receive in exchange for their Common Stock only cash in a Make-Whole Fundamental Change described in clause (b) of the definition of Fundamental Change, the Stock
Price shall be the cash amount paid per share. Otherwise, the Stock Price shall be the average of the Last Reported Sale Prices of the Common Stock over the five consecutive Trading Day period ending on, and including, the Trading Day immediately
preceding the Effective Date of the Make-Whole Fundamental Change. The Board of Directors shall make appropriate adjustments to the Stock Price, in its good faith determination, to account for any adjustment to the Conversion Rate that becomes
effective, or any event requiring an adjustment to the Conversion Rate where the Ex-Dividend Date, Effective Date (as such term is used in Section 14.04) or Expiration Date of the event occurs during such five consecutive Trading Day period.

  
 56 

 (d) The Stock Prices set forth in the column headings of the table below shall be adjusted
as of any date on which the Conversion Rate of the Notes is otherwise adjusted. The adjusted Stock Prices shall equal the Stock Prices applicable immediately prior to such adjustment, multiplied by a fraction, the numerator of which is the
Conversion Rate immediately prior to such adjustment giving rise to the Stock Price adjustment and the denominator of which is the Conversion Rate as so adjusted. The number of Additional Shares set forth in the table below shall be adjusted in the
same manner and at the same time as the Conversion Rate as set forth in Section 14.04. 
 (e) The following table sets forth the
number of Additional Shares of Common Stock by which the Conversion Rate shall be increased per $1,000 principal amount of Notes pursuant to this Section 14.03 for each Stock Price and Effective Date set forth below: 

 

																																													
	 	  	Stock Price	 
	 Effective Date
	  	$47.60	 	  	$50.00	 	  	$55.00	 	  	$63.07	 	  	$70.00	 	  	$85.00	 	  	$100.00	 	  	$120.00	 	  	$140.00	 	  	$160.00	 	  	$180.00	 
	 March 20, 2018
	  	 	5.1530	 	  	 	4.6714	 	  	 	3.8387	 	  	 	2.8519	 	  	 	2.2453	 	  	 	1.3909	 	  	 	0.8961	 	  	 	0.5188	 	  	 	0.3078	 	  	 	0.1834	 	  	 	0.1071	 
	 March 15, 2019
	  	 	5.1530	 	  	 	4.6714	 	  	 	3.8111	 	  	 	2.7644	 	  	 	2.1314	 	  	 	1.2620	 	  	 	0.7771	 	  	 	0.4234	 	  	 	0.2361	 	  	 	0.1316	 	  	 	0.0714	 
	 March 15, 2020
	  	 	5.1530	 	  	 	4.6714	 	  	 	3.7365	 	  	 	2.6192	 	  	 	1.9590	 	  	 	1.0841	 	  	 	0.6231	 	  	 	0.3088	 	  	 	0.1553	 	  	 	0.0767	 	  	 	0.0354	 
	 March 15, 2021
	  	 	5.1530	 	  	 	4.6260	 	  	 	3.5551	 	  	 	2.3544	 	  	 	1.6717	 	  	 	0.8224	 	  	 	0.4185	 	  	 	0.1750	 	  	 	0.0723	 	  	 	0.0273	 	  	 	0.0078	 
	 March 15, 2022
	  	 	5.1530	 	  	 	4.3898	 	  	 	3.1584	 	  	 	1.8432	 	  	 	1.1589	 	  	 	0.4313	 	  	 	0.1652	 	  	 	0.0454	 	  	 	0.0099	 	  	 	0.0004	 	  	 	0.0000	 
	 March 15, 2023
	  	 	5.1530	 	  	 	4.1446	 	  	 	2.3264	 	  	 	0.0000	 	  	 	0.0000	 	  	 	0.0000	 	  	 	0.0000	 	  	 	0.0000	 	  	 	0.0000	 	  	 	0.0000	 	  	 	0.0000	 

 The exact Stock Price and Effective Date may not be set forth in the table above, in which case: 

(i) if the Stock Price is between two Stock Prices in the table above or the Effective Date is between two Effective Dates in
the table, the number of Additional Shares shall be determined by a straight-line interpolation between the number of Additional Shares set forth for the higher and lower Stock Prices and the earlier and later Effective Dates, as applicable, based
on a 365-day year; 
 (ii) if the Stock Price is greater than $180.00 per share (subject to adjustment in the same manner as
the Stock Prices set forth in the column headings of the table above pursuant to subsection (d) above), no Additional Shares shall be added to the Conversion Rate; and 

(iii) if the Stock Price is less than $47.60 per share (subject to adjustment in the same manner as the Stock Prices set forth
in the column headings of the table above pursuant to subsection (d) above), no Additional Shares shall be added to the Conversion Rate. 

Notwithstanding the foregoing, in no event shall the Conversion Rate per $1,000 principal amount of Notes exceed 21.0084 shares of Common Stock, subject to
adjustment in the same manner as the Conversion Rate pursuant to Section 14.04. 
 (f) Nothing in this Section 14.03 shall prevent
an adjustment to the Conversion Rate pursuant to Section 14.04 in respect of a Make-Whole Fundamental Change. 

Section 14.04. Adjustment of Conversion Rate. The Conversion Rate shall be adjusted from time to time by the Company if any
of the following events occurs, except that the Company shall not make any adjustments to the Conversion Rate if Holders of the Notes participate (other than in the case of (x) a share split or share combination or (y) a tender or exchange
offer), at the same time and upon the same terms as holders of the Common Stock and solely as a result of holding the Notes, in any of the transactions described in this Section 14.04, without having to convert their Notes, as if they held a
number of shares of Common Stock equal to the Conversion Rate, multiplied by the principal amount (expressed in thousands) of Notes held by such Holder. 

  
 57 

 (a) If the Company exclusively issues shares of Common Stock as a dividend or distribution on
shares of the Common Stock, or if the Company effects a share split or share combination, the Conversion Rate shall be adjusted based on the following formula: 
  

 
 where, 
  

					
	CR0	  	=	  	the Conversion Rate in effect immediately prior to the open of business on the Ex-Dividend Date of such dividend or distribution, or immediately prior to the open of business on the Effective Date of such share split or share
combination, as applicable;
			
	CR’	  	=	  	the Conversion Rate in effect immediately after the open of business on such Ex-Dividend Date or Effective Date, as applicable;
			
	OS0	  	=	  	the number of shares of Common Stock outstanding immediately prior to the open of business on such Ex-Dividend Date or Effective Date, as applicable, before giving effect to such dividend, distribution, share split or share
combination; and
			
	OS’	  	=	  	the number of shares of Common Stock outstanding immediately after giving effect to such dividend, distribution, share split or share combination.

 Any adjustment made under this Section 14.04(a) shall become effective immediately after the open of business on the
Ex-Dividend Date for such dividend or distribution, or immediately after the open of business on the Effective Date for such share split or share combination, as applicable. If any dividend or distribution of the type described in this
Section 14.04(a) is declared but not so paid or made, the Conversion Rate shall be immediately readjusted, effective as of the date the Board of Directors determines not to pay such dividend or distribution, to the Conversion Rate that would
then be in effect if such dividend or distribution had not been declared. 
 (b) If the Company issues to all or substantially all holders
of the Common Stock any rights, options or warrants (other than pursuant to a stockholders rights plan) entitling them, for a period of not more than 60 calendar days after the announcement date of such issuance, to subscribe for or purchase shares
of the Common Stock at a price per share that is less than the average of the Last Reported Sale Prices of the Common Stock for the 10 consecutive Trading Day period ending on, and including, the Trading Day immediately preceding the date of
announcement of such issuance, the Conversion Rate shall be increased based on the following formula: 
  
 

 

  
 58 

 where, 
  

					
	CR0	  	=	  	the Conversion Rate in effect immediately prior to the open of business on the Ex-Dividend Date for such issuance;
			
	CR’	  	=	  	the Conversion Rate in effect immediately after the open of business on such Ex-Dividend Date;
			
	OS0	  	=	  	the number of shares of Common Stock outstanding immediately prior to the open of business on such Ex-Dividend Date;
			
	X	  	=	  	the total number of shares of Common Stock issuable pursuant to such rights, options or warrants; and
			
	Y	  	=	  	the number of shares of Common Stock equal to the aggregate price payable to exercise such rights, options or warrants, divided by the average of the Last Reported Sale Prices of the Common Stock over the 10 consecutive
Trading Day period ending on, and including, the Trading Day immediately preceding the date of announcement of the issuance of such rights, options or warrants.

 Any increase made under this Section 14.04(b) shall be made successively whenever any such rights, options or warrants
are issued and shall become effective immediately after the open of business on the Ex-Dividend Date for such issuance. To the extent that shares of the Common Stock are not delivered after the expiration of such rights, options or warrants, the
Conversion Rate shall be decreased to the Conversion Rate that would then be in effect had the increase with respect to the issuance of such rights, options or warrants been made on the basis of delivery of only the number of shares of Common Stock
actually delivered. If such rights, options or warrants are not so issued, the Conversion Rate shall be decreased to the Conversion Rate that would then be in effect if such Ex-Dividend Date for such issuance had not occurred. 

For purposes of this Section 14.04(b) and for the purpose of Section 14.01(b)(ii)(A), in determining whether any rights, options or
warrants entitle the holders to subscribe for or purchase shares of the Common Stock at a price per share that is less than such average of the Last Reported Sale Prices of the Common Stock for the 10 consecutive Trading Day period ending on, and
including, the Trading Day immediately preceding the date of announcement for such issuance, and in determining the aggregate offering price of such shares of Common Stock, there shall be taken into account any consideration received by the Company
for such rights, options or warrants and any amount payable on exercise or conversion thereof, the value of such consideration, if other than cash, to be determined by the Board of Directors. 

(c) If the Company distributes shares of its Capital Stock, evidences of its indebtedness, other assets or property of the Company or
rights, options or warrants to acquire its Capital Stock or other securities, to all or substantially all holders of the Common Stock, excluding (i) dividends, distributions or issuances (including share splits) as to which an adjustment was
effected pursuant to Section 14.04(a) or Section 14.04(b), (ii) except as otherwise described in Section 14.11, rights issued pursuant to any stockholders rights plan of the Company then in effect, (iii)dividends or distributions
paid exclusively in cash as to which the provisions set forth in Section 14.04(d) shall apply, (iv) dividends or distributions of Reference Property in exchange for or upon conversion of the Common Stock in a Merger Event, and
(v) Spin-Offs as to which the provisions set forth below in this Section 14.04(c) shall apply (any of such shares of Capital Stock, evidences of indebtedness, other assets or property or rights, options or warrants to acquire Capital Stock
or other securities, the “Distributed Property”), then the Conversion Rate shall be increased based on the following formula: 
  

 

  
 59 

 where, 
  

					
	CR0	  	=	  	the Conversion Rate in effect immediately prior to the open of business on the Ex-Dividend Date for such distribution;
			
	CR’	  	=	  	the Conversion Rate in effect immediately after the open of business on such Ex-Dividend Date;
			
	SP0	  	=	  	the average of the Last Reported Sale Prices of the Common Stock over the 10 consecutive Trading Day period ending on, and including, the Trading Day immediately preceding the Ex-Dividend Date for such distribution; and
			
	FMV	  	=	  	the fair market value (as determined by the Board of Directors) of the Distributed Property with respect to each outstanding share of the Common Stock on the Ex-Dividend Date for such distribution.

 Any increase made under the portion of this Section 14.04(c) above shall become effective immediately after the open of
business on the Ex-Dividend Date for such distribution. If such distribution is not so paid or made, the Conversion Rate shall be decreased to the Conversion Rate that would then be in effect if such distribution had not been declared.
Notwithstanding the foregoing, if “FMV” (as defined above) is equal to or greater than “SP0” (as defined above), in lieu of the foregoing increase, each Holder of a Note
shall receive, in respect of each $1,000 principal amount thereof, at the same time and upon the same terms as holders of the Common Stock receive the Distributed Property, the amount and kind of Distributed Property such Holder would have received
if such Holder owned a number of shares of Common Stock equal to the Conversion Rate in effect on the Ex-Dividend Date for the distribution. If the Board of Directors determines the “FMV” (as defined above) of any distribution for purposes
of this Section 14.04(c) by reference to the actual or when-issued trading market for any securities, it shall in doing so consider the prices in such market over the same period used in computing the Last Reported Sale Prices of the Common
Stock over the 10 consecutive Trading Day period ending on, and including, the Trading Day immediately preceding the Ex-Dividend Date for such distribution. 

With respect to an adjustment pursuant to this Section 14.04(c) where there has been a payment of a dividend or other distribution
on the Common Stock of shares of Capital Stock of any class or series, or similar equity interest, of or relating to a Subsidiary or other business unit of the Company, that are, or, when issued, will be, listed or admitted for trading on a U.S.
national securities exchange (a “Spin-Off”), the Conversion Rate shall be increased based on the following formula: 
  

 

  
 60 

 where, 
  

					
	CR0	  	=	  	the Conversion Rate in effect immediately prior to the end of the Valuation Period;
			
	CR’	  	=	  	the Conversion Rate in effect immediately after the end of the Valuation Period;
			
	FMV0	  	=	  	the average of the Last Reported Sale Prices of the Capital Stock or similar equity interest distributed to holders of the Common Stock applicable to one share of the Common Stock (determined by reference to the definition of Last
Reported Sale Price as set forth in Section 1.01 as if references therein to Common Stock were to such Capital Stock or similar equity interest) over the first 10 consecutive Trading Day period after, and including, the Ex-Dividend Date of the
Spin-Off (the “Valuation Period”); and
			
	MP0	  	=	  	the average of the Last Reported Sale Prices of the Common Stock over the Valuation Period.

 The increase to the Conversion Rate under the preceding paragraph shall occur at the close of business
on the last Trading Day of the Valuation Period; provided that (x) in respect of any conversion of Notes for which Physical Settlement is applicable, if the relevant Conversion Date occurs during the Valuation Period, references to
“10” in the preceding paragraph shall be deemed to be replaced with such lesser number of Trading Days as have elapsed between the Ex-Dividend Date of such Spin-Off and the Conversion Date in determining the Conversion Rate and (y) in
respect of any conversion of Notes for which Cash Settlement or Combination Settlement is applicable, for any Trading Day that falls within the relevant Observation Period for such conversion and within the Valuation Period, references to
“10” in the preceding paragraph shall be deemed to be replaced with such lesser number of Trading Days as have elapsed between the Ex-Dividend Date of such Spin-Off and such Trading Day in determining the Conversion Rate as of such Trading
Day. If any dividend or distribution that constitutes a Spin-Off is declared but not so paid or made, the Conversion Rate shall be immediately decreased, effective as of the date the Board of Directors determines not to pay or make such dividend or
distribution, to the Conversion Rate that would then be in effect if such dividend or distribution had not been declared or announced. 

For purposes of this Section 14.04(c) (and subject in all respect to Section 14.11), rights, options or warrants distributed
by the Company to all holders of the Common Stock entitling them to subscribe for or purchase shares of the Company’s Capital Stock, including Common Stock (either initially or under certain circumstances), which rights, options or warrants,
until the occurrence of a specified event or events (“Trigger Event”): (i) are deemed to be transferred with such shares of the Common Stock; (ii) are not exercisable; and (iii) are also issued in respect of future
issuances of the Common Stock, shall be deemed not to have been distributed for purposes of this Section 14.04(c) (and no adjustment to the Conversion Rate under this Section 14.04(c) will be required) until the occurrence of the earliest
Trigger Event, whereupon such rights, options or warrants shall be deemed to have been distributed and an appropriate adjustment (if any is required) to the Conversion Rate shall be made under this Section 14.04(c). If any such right, option or
warrant, including any such existing rights, options or warrants distributed prior to the date of this Indenture, are subject to events, upon the occurrence of which such rights, options or warrants become exercisable to purchase different
securities, evidences of indebtedness or other assets, then the date of the occurrence of any and each such event shall be deemed to be the date of distribution and Ex-Dividend Date with respect to new rights, options or warrants with such rights
(in which case the existing rights, options or warrants shall be deemed to terminate and expire on such date without exercise by any of the holders thereof). In addition, in the event of any distribution (or deemed distribution) of rights, options
or warrants, or any Trigger Event or other event (of the type described in the immediately preceding sentence) with respect thereto that was counted for purposes of calculating a distribution amount for which an adjustment to the Conversion Rate
under this Section 14.04(c) was made, (1) in the case of any such rights, options or warrants that shall all have been redeemed or purchased without exercise by any holders thereof, upon such final redemption or purchase (x) the
Conversion Rate shall be readjusted as if such rights, options or warrants had not been issued and (y) the Conversion Rate shall then again be readjusted to give effect to such distribution, deemed distribution or Trigger Event, as the case may
be, as though it were a cash distribution, equal to the per share redemption or purchase price received by a holder or holders of Common Stock with respect to such rights, options or warrants (assuming such holder had retained such rights, options
or warrants), made to all holders of Common Stock as of the date of such redemption or purchase, and (2) in the case of such rights, options or warrants that shall have expired or been terminated without exercise by any holders thereof, the
Conversion Rate shall be readjusted as if such rights, options and warrants had not been issued. 

  
 61 

 For purposes of Section 14.04(a), Section 14.04(b) and this Section 14.04(c), if
any dividend or distribution to which this Section 14.04(c) is applicable also includes one or both of: 
 (A) a dividend or
distribution of shares of Common Stock to which Section 14.04(a) is applicable (the “Clause A Distribution”); or 

(B) a dividend or distribution of rights, options or warrants to which Section 14.04(b) is applicable (the “Clause B
Distribution”), 
 then, in either case, (1) such dividend or distribution, other than the Clause A Distribution and the Clause
B Distribution, shall be deemed to be a dividend or distribution to which this Section 14.04(c) is applicable (the “Clause C Distribution”) and any Conversion Rate adjustment required by this Section 14.04(c) with respect
to such Clause C Distribution shall then be made, and (2) the Clause A Distribution and Clause B Distribution shall be deemed to immediately follow the Clause C Distribution and any Conversion Rate adjustment required by Section 14.04(a)
and Section 14.04(b) with respect thereto shall then be made, except that, if determined by the Company (I) the “Ex-Dividend Date” of the Clause A Distribution and the Clause B Distribution shall be deemed to be the Ex-Dividend
Date of the Clause C Distribution and (II) any shares of Common Stock included in the Clause A Distribution or Clause B Distribution shall be deemed not to be “outstanding immediately prior to the open of business on such Ex-Dividend Date
or Effective Date” within the meaning of Section 14.04(a) or “outstanding immediately prior to the open of business on such Ex-Dividend Date” within the meaning of Section 14.04(b). 

(d) If the Company pays or makes any cash dividend or distribution to all or substantially all holders of the Common Stock, the Conversion
Rate shall be adjusted based on the following formula: 
  
 

 
 where, 
  

					
	CR0	  	=	  	the Conversion Rate in effect immediately prior to the open of business on the Ex-Dividend Date for such dividend or distribution;
			
	CR’	  	=	  	the Conversion Rate in effect immediately after the open of business on the Ex-Dividend Date for such dividend or distribution;
			
	SP0	  	=	  	the Last Reported Sale Price of the Common Stock on the Trading Day immediately preceding the Ex-Dividend Date for such dividend or distribution; and
			
	C	  	=	  	the amount in cash per share the Company distributes to all or substantially all holders of the Common Stock.

  
 62 

 Any increase pursuant to this Section 14.04(d) shall become effective immediately after the open of business
on the Ex-Dividend Date for such dividend or distribution. If such dividend or distribution is not so paid, the Conversion Rate shall be decreased, effective as of the date the Board of Directors determines not to make or pay such dividend or
distribution, to be the Conversion Rate that would then be in effect if such dividend or distribution had not been declared. Notwithstanding the foregoing, if “C” (as defined above) is equal to or greater than “SP0” (as defined above), in lieu of the foregoing increase, each Holder of a Note shall receive, for each $1,000 principal amount of Notes, at the same time and upon the same terms as holders of
shares of the Common Stock, the amount of cash that such Holder would have received if such Holder owned a number of shares of Common Stock equal to the Conversion Rate on the Ex-Dividend Date for such cash dividend or distribution. 

(e) If the Company or any of its Subsidiaries make a payment in respect of a tender or exchange offer for the Common Stock that is subject to
the then-applicable tender offer rules under the Exchange Act (other than an odd lot tender offer), to the extent that the cash and value of any other consideration included in the payment per share of the Common Stock exceeds the average of the
Last Reported Sale Prices of the Common Stock over the 10 consecutive Trading Day period commencing on, and including, the Trading Day next succeeding the last date on which tenders or exchanges may be made pursuant to such tender or exchange offer,
the Conversion Rate shall be increased based on the following formula: 
  
 

 
 where, 
  

					
	CR0	  	=	  	the Conversion Rate in effect immediately prior to the close of business on the 10th Trading Day immediately following, and including, the Trading Day next succeeding the date such tender or exchange offer expires (the date such
tender offer or exchange offer expires, the “Expiration Date”);
			
	CR’	  	=	  	the Conversion Rate in effect immediately after the close of business on the 10th Trading Day immediately following, and including, the Trading Day next succeeding the Expiration Date;
			
	AC	  	=	  	the aggregate value of all cash and any other consideration (as determined by the Board of Directors) paid or payable for shares of Common Stock purchased in such tender or exchange offer;
			
	OS0	  	=	  	the number of shares of Common Stock outstanding immediately prior to the Expiration Date (prior to giving effect to the purchase of all shares of Common Stock accepted for purchase or exchange in such tender or exchange
offer);
			
	OS’	  	=	  	the number of shares of Common Stock outstanding immediately after the Expiration Date (after giving effect to the purchase of all shares of Common Stock accepted for purchase or exchange in such tender or exchange offer);
and
			
	SP’	  	=	  	the average of the Last Reported Sale Prices of the Common Stock over the 10 consecutive Trading Day period commencing on, and including, the Trading Day next succeeding the Expiration Date.

  
 63 

 The increase to the Conversion Rate under this Section 14.04(e) shall occur at the close of
business on the 10th Trading Day immediately following, and including, the Trading Day next succeeding the date such tender or exchange offer expires; provided that (x) in respect of any conversion of Notes for which Physical Settlement
is applicable, if the relevant Conversion Date occurs during the 10 Trading Days immediately following, and including, the Trading Day next succeeding the Expiration Date of any tender or exchange offer, references to “10” or
“10th” in the preceding paragraph shall be deemed replaced with such lesser number of Trading Days as have elapsed between the Expiration Date of such tender or exchange offer and the Conversion Date in determining the Conversion Rate and
(y) in respect of any conversion of Notes for which Cash Settlement or Combination Settlement is applicable, for any Trading Day that falls within the relevant Observation Period for such conversion and within the 10 Trading Days immediately
following, and including, the Trading Day next succeeding the Expiration Date of any tender or exchange offer, references to “10” or “10th” in the preceding paragraph shall be deemed replaced with such lesser number of Trading
Days as have elapsed between the Expiration Date of such tender or exchange offer and such Trading Day in determining the Conversion Rate as of such Trading Day. 

In the event that the Company or one of its Subsidiaries is obligated to purchase shares of Common Stock pursuant to any such tender offer or
exchange offer, but the Company is, or such Subsidiary is, permanently prevented by applicable law from consummating any such purchases, or all such purchases are rescinded, then the Conversion Rate shall be decreased to be the Conversion Rate that
would then be in effect if such tender offer or exchange offer had not been made or had been made only in respect of the purchases that have been consummated. 

(f) Notwithstanding this Section 14.04 or any other provision of this Indenture or the Notes, if a Conversion Rate adjustment becomes
effective on any Ex-Dividend Date, and a Holder that has converted its Notes on or after such Ex-Dividend Date and on or prior to the related Record Date would be treated as the record holder of the shares of Common Stock as of the related
Conversion Date as described under Section 14.02(i) based on an adjusted Conversion Rate for such Ex-Dividend Date, then, notwithstanding the Conversion Rate adjustment provisions in this Section 14.04, the Conversion Rate adjustment
relating to such Ex-Dividend Date shall not be made for such converting Holder. Instead, such Holder shall be treated as if such Holder were the record owner of the shares of Common Stock on an unadjusted basis and participate in the related
dividend, distribution or other event giving rise to such adjustment. 
 (g) Except as stated herein, the Company shall not adjust the
Conversion Rate for the issuance of shares of the Common Stock or any securities convertible into or exchangeable for shares of the Common Stock or the right to purchase shares of the Common Stock or such convertible or exchangeable securities. 

(h) In addition to those adjustments required by clauses (a), (b), (c), (d) and (e) of this Section 14.04, and to the extent
permitted by applicable law and subject to the applicable rules of The New York Stock Exchange, the Company from time to time may increase the Conversion Rate by any amount for a period of at least 20 Business Days if the Board of Directors
determines that such increase would be in the Company’s best interest. In addition, to the extent permitted by applicable law and subject to the applicable rules of The New York Stock Exchange, the Company may (but is not required to) increase
the Conversion Rate to avoid or diminish any income tax to holders of Common Stock or rights to purchase Common Stock in connection with a dividend or distribution of shares of Common Stock (or rights to acquire shares of Common Stock) or similar
event. Whenever the Conversion Rate is increased pursuant to either of the preceding two sentences, the Company shall deliver to the Holder of each Note a notice of the increase at least 15 days prior to the date the increased Conversion Rate takes
effect, and such notice shall state the increased Conversion Rate and the period during which it will be in effect. 

  
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 (i) Except as stated in this Indenture, the Company shall not adjust the Conversion Rate for the
issuance of shares of Common Stock or any securities convertible into or exchangeable for shares of Common Stock or the right to purchase shares of Common Stock or such convertible or exchangeable securities. For illustrative purposes only and
without limiting the generality of the preceding sentence, the Conversion Rate shall not be adjusted: 
 (i) upon the
issuance of any shares of Common Stock pursuant to any present or future plan providing for the reinvestment of dividends or interest payable on the Company’s securities and the investment of additional optional amounts in shares of Common
Stock under any plan; 
 (ii) upon the issuance of any shares of Common Stock or options or rights to purchase those shares
pursuant to any present or future employee, director or consultant benefit plan or program of or assumed by the Company or any of the Company’s Subsidiaries; 

(iii) upon the issuance of any shares of the Common Stock pursuant to any option, warrant, right or exercisable, exchangeable
or convertible security not described in clause (ii) of this subsection and outstanding as of the date the Notes were first issued; 

(iv) upon the repurchase of any shares of Common Stock pursuant to an open market share repurchase program or other buy-back
transaction, including structured or derivative transactions, that is not a tender or exchange offer described in Section 14.04(e); 

(v) solely for a change in the par value (or lack of par value) of the Common Stock; or 

(vi) for accrued and unpaid interest, if any. 

(j) All calculations and other determinations under this Article 14 shall be made by the Company and shall be made to the nearest one-ten
thousandth (1/10,000th) of a share. 
 (k) Whenever the Conversion Rate is adjusted as herein provided, the Company shall promptly file
with the Trustee (and the Conversion Agent if not the Trustee) an Officer’s Certificate setting forth the Conversion Rate after such adjustment and setting forth a brief statement of the facts requiring such adjustment. Unless and until a
Responsible Officer of the Trustee shall have received such Officer’s Certificate, the Trustee shall not be deemed to have knowledge of any adjustment of the Conversion Rate and may assume without inquiry that the last Conversion Rate of which
it has knowledge is still in effect. Promptly after delivery of such certificate, the Company shall prepare a notice of such adjustment of the Conversion Rate setting forth the adjusted Conversion Rate and the date on which each adjustment becomes
effective and shall deliver such notice of such adjustment of the Conversion Rate to each Holder. Failure to deliver such notice shall not affect the legality or validity of any such adjustment. 

  
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 (l) For purposes of this Section 14.04, the number of shares of Common Stock at any time
outstanding shall not include shares of Common Stock held in the treasury of the Company so long as the Company does not pay any dividend or make any distribution on shares of Common Stock held in the treasury of the Company, but shall include
shares of Common Stock issuable in respect of scrip certificates issued in lieu of fractions of shares of Common Stock. 

Section 14.05. Adjustments of Prices. Whenever any provision of this Indenture requires the Company to calculate the Last
Reported Sale Prices, the Daily VWAPs, the Daily Conversion Values or the Daily Settlement Amounts over a span of multiple days (including, without limitation, an Observation Period and the period, if any, for determining the Stock Price for
purposes of a Make-Whole Fundamental Change), the Board of Directors shall make appropriate adjustments (without duplication in respect of any adjustment made pursuant to Section 14.04) to each to account for any adjustment to the Conversion
Rate that becomes effective, or any event requiring an adjustment to the Conversion Rate where the Ex-Dividend Date, Effective Date or Expiration Date, as the case may be, of the event occurs, at any time during the period when the Last Reported
Sale Prices, the Daily VWAPs, the Daily Conversion Values or the Daily Settlement Amounts are to be calculated.  

Section 14.06. Shares to Be Fully Paid. The Company shall reserve, free from preemptive rights, out of its authorized but
unissued shares or shares held in treasury, sufficient shares of Common Stock to provide for conversion of the Notes from time to time as such Notes are presented for conversion (assuming delivery of the maximum number of Additional Shares pursuant
to Section 14.03 and that at the time of computation of such number of shares, all such Notes would be converted by a single Holder and that Physical Settlement were applicable). 

Section 14.07. Effect of Recapitalizations, Reclassifications and Changes of the Common Stock.  

(a) In the case of: 

(i) any recapitalization, reclassification or change of the Common Stock (other than changes in par value or resulting from a
subdivision or combination), 
 (ii) any consolidation, merger or combination involving the Company, 

(iii) any sale, lease or other transfer to a third party of all or substantially all of the consolidated assets of the Company
and the Company’s Subsidiaries, taken as a whole, or 
 (iv) any statutory share exchange, 

in each case, as a result of which the Common Stock would be converted into, or exchanged for, stock, other securities, other property or assets
(including cash or any combination thereof) (any such event, a “Merger Event”), then at and after the effective time of such Merger Event, the right to convert each $1,000 principal amount of Notes shall be changed into a right to
convert such principal amount of Notes into the kind and amount of shares of stock, other securities or other property or assets (including cash or any combination thereof) that a holder of a number of shares of Common Stock equal to the Conversion
Rate immediately prior to such Merger Event would have owned or been entitled to receive (the “Reference Property,” with each “unit of Reference Property” meaning the kind and amount of Reference Property that a
holder of one share of Common Stock is entitled to receive) upon such Merger Event and, prior to or at the effective time of such Merger Event, the Company or the successor or acquiring Person, as the case may be, shall execute with the Trustee a
supplemental indenture permitted under Section 10.01(g) providing for such change in the right to convert each $1,000 principal amount of Notes; provided, however, that at and after the effective time
of the Merger Event (A) the Company or the successor or acquiring company, as the case may be, shall continue to have the right to determine the form of consideration to be paid or delivered, as the case may be, upon conversion of Notes in
accordance with Section 14.02 and (B) (I) any amount payable in cash upon conversion of the Notes in accordance with Section 14.02 shall continue to be payable in cash, (II) any shares of Common Stock that the Company would have
been required to deliver upon conversion of the Notes in accordance with Section 14.02 shall instead be deliverable in the amount and type of Reference Property that a holder of that number of shares of Common Stock would have received in such
Merger Event and (III) the Daily VWAP shall be calculated based on the value of a unit of Reference Property. 

  
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 If the Merger Event causes the Common Stock to be converted into, or exchanged for, the
right to receive more than a single type of consideration (determined based in part upon any form of stockholder election), then (i) the Reference Property into which the Notes will be convertible shall be deemed to be (x) the weighted
average of the types and amounts of consideration received by the holders of Common Stock that affirmatively make such an election or (y) if no holders of Common Stock affirmatively make such an election, the types and amounts of consideration
actually received by the holders of Common Stock, and (ii) the unit of Reference Property for purposes of the immediately preceding paragraph shall refer to the consideration referred to in clause (i) attributable to one share of Common
Stock. If the holders of the Common Stock receive only cash in such Merger Event, then for all conversions for which the relevant Conversion Date occurs after the effective date of such Merger Event (A) the consideration due upon conversion of
each $1,000 principal amount of Notes shall be solely cash in an amount equal to the Conversion Rate in effect on the Conversion Date (as may be increased by any Additional Shares pursuant to Section 14.03), multiplied by the price paid
per share of Common Stock in such Merger Event and (B) the Company shall satisfy the Conversion Obligation by paying such cash amount to converting Holders on the second Business Day immediately following the relevant Conversion Date. The
Company shall notify Holders, the Trustee and the Conversion Agent (if other than the Trustee) of such weighted average as soon as reasonably practicable after such determination is made. 

If the Reference Property in respect of any Merger Event includes, in whole or in part, shares of common equity, such supplemental indenture
described in the second immediately preceding paragraph shall provide for anti-dilution and other adjustments that shall be as nearly equivalent as is possible to the adjustments provided for in this Article 14 with respect to the portion of the
Reference Property consisting of such common equity. If, in the case of any Merger Event, the Reference Property includes shares of stock, securities or other property or assets (other than cash and/or cash equivalents) of a Person other than the
successor or purchasing corporation, as the case may be, in such Merger Event, then such supplemental indenture shall also be executed by such other Person, if such other Person is an affiliate of the Company or the successor or acquiring company,
and shall contain such additional provisions to protect the interests of the Holders of the Notes as the Board of Directors shall reasonably consider necessary by reason of the foregoing, including the provisions providing for the purchase rights
set forth in Article 15. 
 (b) When the Company executes a supplemental indenture pursuant to subsection (a) of this
Section 14.07, the Company shall promptly file with the Trustee an Officer’s Certificate briefly stating the reasons therefor, the kind or amount of cash, securities or property or asset that will comprise a unit of Reference Property
after any such Merger Event, any adjustment to be made with respect thereto and that all conditions precedent have been complied with, and shall promptly deliver notice thereof to all Holders. The Company shall cause notice of the execution of such
supplemental indenture to be delivered to each Holder within 20 days after execution thereof. Failure to deliver such notice shall not affect the legality or validity of such supplemental indenture. 

  
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 (c) The Company shall not become a party to any Merger Event unless its terms are consistent with
this Section 14.07. None of the foregoing provisions shall affect the right of a holder of Notes to convert its Notes into cash, shares of Common Stock or a combination of cash and shares of Common Stock, as applicable, as set forth in
Section 14.01 and Section 14.02 prior to the effective date of such Merger Event. 
 (d) The above provisions of this Section
shall similarly apply to successive Merger Events. 
 Section 14.08. Certain Covenants. (a) Subject to Sections
14.02(d) and 14.02(e), the Company covenants that all shares of Common Stock issued upon conversion of Notes will be fully paid and non-assessable by the Company and free from all taxes, liens and charges with respect to the issue thereof.

 (b) The Company covenants that, if any shares of Common Stock to be provided for the purpose of conversion of Notes hereunder require
registration with or approval of any governmental authority under any federal or state law before such shares of Common Stock may be validly issued upon conversion, the Company will, to the extent then permitted by the rules and interpretations of
the Commission, secure such registration or approval, as the case may be. 
 (c) The Company further covenants that if at any time the
Common Stock shall be listed on any national securities exchange or automated quotation system the Company will list and use its commercially reasonable efforts to keep listed, so long as the Common Stock shall be so listed on such exchange or
automated quotation system, any Common Stock issuable upon conversion of the Notes. 
 Section 14.09. Responsibility of
Trustee. The Trustee and any other Conversion Agent shall not at any time be under any duty or responsibility to any Holder to determine the Conversion Rate (or any adjustment thereto) or whether any facts exist that may require any adjustment
(including any increase) of the Conversion Rate, or with respect to the nature or extent or calculation of any such adjustment when made, or with respect to the method employed, or herein or in any supplemental indenture provided to be employed, in
making the same. The Trustee and any other Conversion Agent shall not be accountable with respect to the validity or value (or the kind or amount) of any shares of Common Stock, or of any securities, property or cash that may at any time be issued
or delivered upon the conversion of any Note; and the Trustee and any other Conversion Agent make no representations with respect thereto. Neither the Trustee nor any Conversion Agent shall be responsible for any failure of the Company to issue,
transfer or deliver any shares of Common Stock or stock certificates or other securities or property or cash upon the surrender of any Note for the purpose of conversion or to comply with any of the duties, responsibilities or covenants of the
Company contained in this Article. Without limiting the generality of the foregoing, neither the Trustee nor any Conversion Agent shall be under any responsibility to determine the correctness of any provisions contained in any supplemental
indenture entered into pursuant to Section 14.07 relating either to the kind or amount of shares of stock or securities or property (including cash) receivable by Holders upon the conversion of their Notes after any event referred to in such
Section 14.07 or to any adjustment to be made with respect thereto, but, subject to the provisions of Section 7.01, may accept (without any independent investigation) as conclusive evidence of the correctness of any such provisions, and
shall be protected in relying upon, the Officer’s Certificate (which the Company shall be obligated to file with the Trustee prior to the execution of any such supplemental indenture) with respect thereto. Neither the Trustee nor the Conversion
Agent shall be responsible for determining whether any event contemplated by Section 14.01(b) has occurred that makes the Notes eligible for conversion or no longer eligible therefor. The Trustee and the Conversion Agent may conclusively rely
upon any notice with respect to the commencement or termination of such conversion rights, and the Company agrees to deliver such notices to the Trustee and the Conversion Agent immediately after the occurrence of any such event or at such other
times as shall be provided for in Section 14.01(b). 

  
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 Section 14.10. Notice to Holders Prior to Certain Actions. In case of any: 

 (a) action by the Company or one of its Subsidiaries that would require an adjustment in the Conversion Rate pursuant to
Section 14.04 or Section 14.11; 
 (b) Merger Event; or 

(c) voluntary or involuntary dissolution, liquidation or winding-up of the Company; 

then, in each case (unless notice of such event is otherwise required pursuant to another provision of this Indenture) and to the extent applicable, the
Company shall cause to be filed with the Trustee and the Conversion Agent (if other than the Trustee) and to be delivered to each Holder, a notice stating the date on which a record is to be taken for the purpose of such action by the Company or one
of its Subsidiaries or, if a record is not to be taken, the date as of which the holders of Common Stock of record are to be determined for the purposes of such action by the Company or one of its Subsidiaries no later than the earlier of the date
notice of such date is required to be provided under Rule 10b-17 of the Exchange Act, other applicable Commission rule or applicable rules of the principal U.S. national or regional securities exchange on which the Common Stock is then listed or
admitted for trading and such date is publicly announced by the Company. Failure to give such notice, or any defect therein, shall not affect the legality or validity of such action by the Company or one of its Subsidiaries, Merger Event,
dissolution, liquidation or winding-up. 
 Section 14.11. Stockholder Rights Plans. If the Company has a stockholder
rights plan in effect upon conversion of the Notes, each share of Common Stock, if any, issued upon such conversion shall be entitled to receive the appropriate number of rights, if any, under such stockholder rights plan and the certificates
representing the Common Stock issued upon such conversion shall bear such legends, if any, in each case as may be provided by the terms of any such stockholder rights plan, as the same may be amended from time to time. However, if, prior to any
conversion of Notes, the rights have separated from the shares of Common Stock in accordance with the provisions of the applicable stockholder rights plan, the Conversion Rate shall be adjusted at the time of separation as if the Company distributed
to all or substantially all holders of the Common Stock Distributed Property as provided in Section 14.04(c), subject to readjustment in the event of the expiration, termination or redemption of such rights. 

Section 14.12. Exchange in Lieu of Conversion. When a Holder surrenders its Notes for conversion, the Company may, at its
election (an “Exchange Election”), direct the Conversion Agent to deliver, on or prior to the first Trading Day following the Conversion Date, such Notes to a financial institution designated by the Company for
exchange in lieu of conversion. In order to accept any Notes surrendered for conversion, the designated financial institution must agree to timely deliver, in exchange for such Notes, the cash, shares of Common Stock or combination thereof due upon
conversion as described in Section 14.02. If the Company makes an Exchange Election, the Company shall, by the close of business on the first Trading Day following the relevant Conversion Date, notify Conversion Agent and the Holder surrendering its
Notes for conversion that it has made the Exchange Election, and the Company shall notify the designated financial institution of the Settlement Method it has elected with respect to such conversion and the relevant deadline for payment and/or
delivery of cash, shares of Common Stock or a combination thereof due upon conversion. 

  
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 Any Notes exchanged by the designated financial institution shall remain outstanding. If the
designated financial institution agrees to accept any Notes for exchange but does not timely pay and/or deliver the required cash, shares of Common Stock or a combination thereof due upon conversion, or if such designated financial institution does
not accept the Notes for exchange, the Company shall notify the Conversion Agent and the Holder surrendering its Notes for conversion, and pay and/or deliver the required cash, shares of Common Stock or a combination thereof due upon conversion to
the converting Holder at the time and in the manner required under this Indenture as if the Company had not made an Exchange Election. 

The Company’s designation of a financial institution to which the Notes may be submitted for exchange does not require that financial
institution to accept any Notes (unless the financial institution has separately made an agreement with the Company). The Company may, but shall not be obligated to, enter into a separate agreement with any designated financial institution that
would compensate it for any such transaction. 
 ARTICLE 15 

REPURCHASE OF NOTES AT OPTION OF
HOLDERS 
 Section 15.01. [Intentionally Omitted]. 

Section 15.02. Repurchase at Option of Holders Upon a Fundamental Change. (a) If a Fundamental Change occurs at any
time, each Holder shall have the right, at such Holder’s option, to require the Company to repurchase for cash all of such Holder’s Notes, or any portion of the principal amount thereof that is equal to $1,000 or an integral multiple of
$1,000, on the date (the “Fundamental Change Repurchase Date”) specified by the Company that is not less than 20 Business Days or more than 35 Business Days following the date of the Fundamental Change Company Notice
at a repurchase price equal to 100% of the principal amount thereof, plus accrued and unpaid interest thereon to, but excluding, the Fundamental Change Repurchase Date (the “Fundamental Change Repurchase
Price”), unless the Fundamental Change Repurchase Date falls after a Regular Record Date but on or prior to the Interest Payment Date to which such Regular Record Date relates, in which case the Company shall instead pay the full
amount of accrued and unpaid interest (to, but excluding, such Interest Payment Date) to Holders of record as of such Regular Record Date, and the Fundamental Change Repurchase Price shall be equal to 100% of the principal amount of Notes to be
repurchased pursuant to this Article 15. The Fundamental Change Repurchase Date shall be subject to postponement in order to allow the Company to comply with applicable law.  

(b) Repurchases of Notes under this Section 15.02 shall be made, at the option of the Holder thereof, upon: 

(i) delivery to the Paying Agent by a Holder of a duly completed notice (the “Fundamental Change Repurchase
Notice”) in the form set forth in Attachment 2 to the Form of Note attached hereto as Exhibit A, if the Notes are Physical Notes, or in compliance with the Applicable Procedures for surrendering interests in Global Notes, if the Notes are
Global Notes, in each case on or before the close of business on the Business Day immediately preceding the Fundamental Change Repurchase Date; and 

(ii) delivery of the Notes, if the Notes are Physical Notes, to the Paying Agent at any time after delivery of the Fundamental
Change Repurchase Notice (together with all necessary endorsements for transfer) at the office of the Paying Agent, or book-entry transfer of the Notes, if the Notes are Global Notes, in compliance with the Applicable Procedures of the Depositary,
in each case such delivery being a condition to receipt by the Holder of the Fundamental Change Repurchase Price therefor. 

  
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 The Fundamental Change Repurchase Notice in respect of any Notes to be repurchased shall state:

 (i) in the case of Physical Notes, the certificate numbers of the Notes to be delivered for repurchase; 

(ii) the portion of the principal amount of Notes to be repurchased, which must be $1,000 or an integral multiple thereof; and

 (iii) that the Notes are to be repurchased by the Company pursuant to the applicable provisions of the Notes and this
Indenture; 
 provided, however, that if the Notes are Global Notes, the Fundamental Change Repurchase Notice must comply with the Applicable
Procedures. 
 Notwithstanding anything herein to the contrary, any Holder delivering to the Paying Agent the Fundamental Change
Repurchase Notice contemplated by this Section 15.02 shall have the right to withdraw, in whole or in part, such Fundamental Change Repurchase Notice at any time prior to the close of business on the Business Day immediately preceding the
Fundamental Change Repurchase Date by delivery of a written notice of withdrawal to the Paying Agent in accordance with Section 15.03. 

The Paying Agent shall promptly notify the Company of the receipt by it of any Fundamental Change Repurchase Notice or written notice of
withdrawal thereof. 
 (c) On or before the 20th Business Day after the occurrence of the effective date of a Fundamental Change, the
Company shall provide to all Holders of Notes, the Trustee, the Conversion Agent (if other than the Trustee) and the Paying Agent (in the case of a Paying Agent other than the Trustee) a notice (the “Fundamental Change Company
Notice”) of the occurrence of the effective date of the Fundamental Change and of the resulting repurchase right at the option of the Holders arising as a result thereof. In the case of Physical Notes, such notice shall be by first class
mail or, in the case of Global Notes, such notice shall be delivered in accordance with the Applicable Procedures of the Depositary. Each Fundamental Change Company Notice shall specify: 

(i) the events causing the Fundamental Change; 

(ii) the effective date of the Fundamental Change; 

(iii) the last date on which a Holder may exercise the repurchase right pursuant to this Article 15; 

(iv) the Fundamental Change Repurchase Price; 

(v) the Fundamental Change Repurchase Date; 

(vi) the name and address of the Paying Agent and the Conversion Agent, if applicable; 

  
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 (vii) if applicable, the Conversion Rate and any adjustments to the Conversion
Rate; 
 (viii) that the Notes with respect to which a Fundamental Change Repurchase Notice has been delivered by a Holder
may be converted only if the Holder withdraws the Fundamental Change Repurchase Notice in accordance with the terms of this Indenture; and 

(ix) the procedures that Holders must follow to require the Company to repurchase their Notes. 

No failure of the Company to give the foregoing notices and no defect therein shall limit the Holders’ repurchase rights or affect the
validity of the proceedings for the repurchase of the Notes pursuant to this Section 15.02. Simultaneously with providing such notice, the Company will publish such information on its website or through such other public medium as the Company
may use at that time. 
 At the Company’s request, the Paying Agent shall give such notice in the Company’s name and at the
Company’s expense; provided, however, that, in all cases, the text of such Fundamental Change Company Notice shall be prepared by the Company. 

(d) Notwithstanding the foregoing, no Notes may be repurchased by the Company on any date at the option of the Holders in connection with a
Fundamental Change if the principal amount of the Notes has been accelerated, and such acceleration has not been rescinded, on or prior to such date (except in the case of an acceleration resulting from a Default by the Company in the payment of the
Fundamental Change Repurchase Price with respect to such Notes). The Paying Agent will promptly return to the respective Holders thereof any Physical Notes held by it during the acceleration of the Notes (except in the case of an acceleration
resulting from a Default by the Company in the payment of the Fundamental Change Repurchase Price with respect to such Notes), or any instructions for book-entry transfer of the Notes in compliance with the Applicable Procedures shall be deemed to
have been cancelled, and, upon such return or cancellation, as the case may be, the Fundamental Change Repurchase Notice with respect thereto shall be deemed to have been withdrawn. 

(e) Notwithstanding anything to the contrary in this Indenture, the Company shall not be required to repurchase, or to make an offer to
repurchase, the Notes upon a Fundamental Change if a third party makes such an offer in the same manner, at the same time and otherwise in compliance with the requirements for an offer made by the Company as set forth in this Article 15, and such
third party purchases all Notes properly surrendered and not validly withdrawn under its offer in the same manner, at the same time and otherwise in compliance with the requirements for an offer made by the Company as set forth in this Article 15.

 (f) For purposes of this Article 15, the Paying Agent may be any agent, depositary, tender agent, paying agent or other agent appointed
by the Company to accomplish the purposes set forth herein. 
 Section 15.03. Withdrawal of Fundamental Change Repurchase
Notice. (a) A Fundamental Change Repurchase Notice may be withdrawn (in whole or in part) by means of a written notice of withdrawal delivered to the office of the Paying Agent in accordance with this Section 15.03 at any time prior to
the close of business on the Business Day immediately preceding the Fundamental Change Repurchase Date, specifying: 

(i) the principal amount of the Notes with respect to which such notice of withdrawal is being submitted, which must be $1,000
or an integral multiple thereof, 

  
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 (ii) if Physical Notes have been issued, the certificate number of the Note in
respect of which such notice of withdrawal is being submitted, and 
 (iii) the principal amount, if any, of such Note that
remains subject to the original Fundamental Change Repurchase Notice, which portion must be in principal amounts of $1,000 or an integral multiple of $1,000; 

provided, however, that if the Notes are Global Notes, the notice must comply with appropriate Applicable Procedures of the Depositary.

 Section 15.04. Deposit of Fundamental Change Repurchase Price. (a) The Company will deposit with the Paying
Agent, or if the Company is acting as its own Paying Agent, set aside, segregate and hold in trust as provided in Section 4.04) on or prior to 11:00 a.m., New York City time, on the Fundamental Change Repurchase Date (subject to extension in
order to allow the Company to comply with applicable law) an amount of money sufficient to repurchase all of the Notes to be repurchased at the appropriate Fundamental Change Repurchase Price. Subject to receipt of funds and/or Notes by the Paying
Agent, payment for Notes surrendered for repurchase (and not withdrawn prior to the close of business on the Business Day immediately preceding the Fundamental Change Repurchase Date) will be made on the later of (i) the Fundamental Change
Repurchase Date (provided the Holder has satisfied the conditions in Section 15.02) and (ii) the time of book-entry transfer or the delivery of such Note to the Paying Agent by the Holder thereof in the manner required by
Section 15.02 by mailing checks for the amount payable to the Holders of such Notes entitled thereto as they shall appear in the Note Register; provided, however, that payments to the Depositary shall be made by wire transfer of
immediately available funds to the account of the Depositary or its nominee. The Paying Agent shall, promptly after such payment and upon written demand by the Company, return to the Company any funds in excess of the Fundamental Change Repurchase
Price. 
 (b) If by 11:00 a.m. New York City time, on the Fundamental Change Repurchase Date (subject to extension in order to allow
the Company to comply with applicable law), the Paying Agent holds money sufficient to make payment on all the Notes or portions thereof that are to be repurchased on such Fundamental Change Repurchase Date, or, if extended in order to allow the
Company to comply with applicable law, such later date, then, with respect to the Notes that have been properly surrendered for repurchase and have not been validly withdrawn, (i) such Notes will cease to be outstanding, (ii) interest will
cease to accrue on such Notes on the Fundamental Change Repurchase Date or, if extended in order to allow the Company to comply with applicable law, such later date (whether or not book-entry transfer of the Notes has been made or the Notes have
been delivered to the Paying Agent) and (iii) all other rights of the Holders of such Notes with respect to the Notes will terminate on the Fundamental Change Repurchase Date or, if extended in order to allow the Company to comply with
applicable law, such later date (other than (x) the right to receive the Fundamental Change Repurchase Price and (y) if the Fundamental Change Repurchase Date falls after a Regular Record Date but on or prior to the related Interest
Payment Date, the right of the Holder of record on such Regular Record Date to receive the full amount of accrued and unpaid interest to, but excluding, such Interest Payment Date). 

(c) Upon surrender of a Physical Note that is to be repurchased in part pursuant to Section 15.02, the Company shall execute and the
Trustee shall authenticate and deliver to the Holder a new Note in an authorized denomination equal in principal amount to the unrepurchased portion of the Note surrendered. 

  
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 Section 15.05. Covenant to Comply with Applicable Laws Upon Repurchase of
Notes. In connection with any repurchase offer, the Company will, if required: 
 (a) comply with the tender offer rules under the
Exchange Act that may then be applicable; 
 (b) file a Schedule TO or any other required schedule under the Exchange Act; and 

(c) otherwise comply in all material respects with all federal and state securities laws in connection with any offer by the Company to
repurchase the Notes; 
 in each case, so as to permit the rights and obligations under this Article 15 to be exercised in the time and in the manner
specified in this Article 15 subject to postponement in order to allow the Company to comply with applicable law. To the extent that the provisions of any securities laws or regulations conflict with the provisions of this Indenture relating to the
Company’s obligations to purchase the Notes upon a Fundamental Change, the Company will comply with the applicable securities laws and regulations and will not be deemed to have breached our obligations under such provisions of this Indenture
by virtue of such conflict. 
 ARTICLE 16 

NO REDEMPTION 

Section 16.01. No Redemption. The Notes shall not be redeemable by the Company prior to the Maturity Date, and no sinking
fund is provided for the Notes. 
 ARTICLE 17 

MISCELLANEOUS PROVISIONS 

Section 17.01. Provisions Binding on Company’s Successors. All the covenants, stipulations, promises and agreements of
the Company contained in this Indenture shall bind its successors and assigns whether so expressed or not. 

Section 17.02. Official Acts by Successor Corporation. Any act or proceeding by any provision of this Indenture authorized
or required to be done or performed by any board, committee or Officer of the Company shall and may be done and performed with like force and effect by the like board, committee or officer of any corporation or other entity that shall at the time be
the lawful sole successor of the Company. 
 Section 17.03. Addresses for Notices, Etc. Any notice or demand that
by any provision of this Indenture is required or permitted to be given or served by the Trustee or by the Holders on the Company shall be deemed to have been sufficiently given or made, for all purposes if given or served by being deposited postage
prepaid by registered or certified mail in a post office letter box addressed (until another address is filed by the Company with the Trustee) to Zendesk, Inc., 1019 Market Street, San Francisco, CA 94103, Attention: Secretary, with a copy sent to
Goodwin Procter LLP, 100 Northern Avenue, Boston, MA 02210, Attention: James Barri and Tim Nguyen. Any notice, direction, request or demand hereunder to or upon the Trustee shall be deemed to have been sufficiently given or made, for all purposes,
if given or served by being deposited postage prepaid by registered or certified mail in a post office letter box addressed to the Corporate Trust Office. 

The Trustee, by notice to the Company, may designate additional or different addresses for subsequent notices or communications. 

  
 74 

 Any notice or communication delivered or to be delivered to a Holder of Physical Notes shall be
mailed to it by first class mail, postage prepaid, at its address as it appears on the Note Register and shall be sufficiently given to it if so mailed within the time prescribed. Any notice or communication delivered or to be delivered to a Holder
of Global Notes shall be delivered in accordance with the Applicable Procedures of the Depositary and shall be sufficiently given to it if so delivered within the time prescribed. 

Failure to mail or deliver a notice or communication to a Holder or any defect in it shall not affect its sufficiency with respect to other
Holders. If a notice or communication is mailed or delivered, as the case may be, in the manner provided above, it is duly given, whether or not the addressee receives it. 

In case by reason of the suspension of regular mail service or by reason of any other cause it shall be impracticable to give such notice to
Holders by mail, then such notification as shall be made with the approval of the Trustee shall constitute a sufficient notification for every purpose hereunder. 

Section 17.04. Governing Law; Jurisdiction. THIS INDENTURE AND EACH NOTE, AND ANY CLAIM, CONTROVERSY OR DISPUTE ARISING
UNDER OR RELATED TO THIS INDENTURE AND EACH NOTE, SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK (WITHOUT REGARD TO THE CONFLICTS OF LAWS PROVISIONS THEREOF). 

The Company irrevocably consents and agrees, for the benefit of the Holders from time to time of the Notes and the Trustee, that any
legal action, suit or proceeding against it with respect to obligations, liabilities or any other matter arising out of or in connection with this Indenture or the Notes may be brought in the courts of the State of New York or the courts of the
United States located in the Borough of Manhattan, New York City, New York and, until amounts due and to become due in respect of the Notes have been paid, hereby irrevocably consents and submits to the non-exclusive jurisdiction of each such
court in personam, generally and unconditionally with respect to any action, suit or proceeding for itself in respect of its properties, assets and revenues.  

The Company irrevocably and unconditionally waives, to the fullest extent permitted by law, any objection which it may now or hereafter have
to the laying of venue of any of the aforesaid actions, suits or proceedings arising out of or in connection with this Indenture brought in the courts of the State of New York or the courts of the United States located in the Borough of Manhattan,
New York City, New York and hereby further irrevocably and unconditionally waives and agrees not to plead or claim in any such court that any such action, suit or proceeding brought in any such court has been brought in an inconvenient forum. 

Section 17.05. Evidence of Compliance with Conditions Precedent; Certificates and Opinions of Counsel to Trustee. Upon any
application or demand by the Company to the Trustee to take any action under any of the provisions of this Indenture, the Company shall, if requested by the Trustee, furnish to the Trustee an Officer’s Certificate and/or an Opinion of Counsel,
in form and substance reasonably satisfactory to the Trustee, stating that such action is permitted by the terms of this Indenture and that all conditions precedent to such action have been complied with. 

  
 75 

 Each Officer’s Certificate and Opinion of Counsel provided for, by or on behalf of the
Company in this Indenture and delivered to the Trustee with respect to compliance with this Indenture (other than the Officer’s Certificates provided for in Section 4.08) shall include (a) a statement that the person signing such
certificate is familiar with the requested action and this Indenture; (b) a brief statement as to the nature and scope of the examination or investigation upon which the statement contained in such certificate is based; (c) a statement
that, in the judgment of such person, he or she has made such examination or investigation as is necessary to enable him or her to express an informed judgment as to whether or not such action is permitted by this Indenture; and (d) a statement
as to whether or not, in the judgment of such person, such action is permitted by this Indenture and that all conditions precedent to such action have been complied with. 

Section 17.06. Legal Holidays. In any case where any Interest Payment Date, any Fundamental Change Repurchase Date or the
Maturity Date is not a Business Day, then any action to be taken on such date need not be taken on such date, but may be taken on the next succeeding Business Day with the same force and effect as if taken on such date, and no interest shall accrue
in respect of the delay. 
 Section 17.07. No Security Interest Created. Nothing in this Indenture or in the
Notes, expressed or implied, shall be construed to constitute a security interest under the Uniform Commercial Code or similar legislation, as now or hereafter enacted and in effect, in any jurisdiction. 

Section 17.08. Benefits of Indenture. Nothing in this Indenture or in the Notes, expressed or implied, shall give to any
Person, other than the Holders, the parties hereto, any Paying Agent, any Conversion Agent, any Bid Solicitation Agent, any Custodian, any authenticating agent, any Note Registrar and their successors hereunder, any benefit or any legal or equitable
right, remedy or claim under this Indenture. 
 Section 17.09. Table of Contents, Headings, Etc. The table of
contents and the titles and headings of the articles and sections of this Indenture have been inserted for convenience of reference only, are not to be considered a part hereof, and shall in no way modify or restrict any of the terms or provisions
hereof. 
 Section 17.10. Authenticating Agent. The Trustee may appoint an authenticating agent that shall be
authorized to act on its behalf and subject to its direction in the authentication and delivery of Notes in connection with the original issuance thereof and transfers and exchanges of Notes hereunder, including under Section 2.04,
Section 2.05, Section 2.06, Section 2.07, Section 10.04 and Section 15.04 as fully to all intents and purposes as though the authenticating agent had been expressly authorized by this Indenture and those Sections to
authenticate and deliver Notes. For all purposes of this Indenture, the authentication and delivery of Notes by the authenticating agent shall be deemed to be authentication and delivery of such Notes “by the Trustee” and a certificate of
authentication executed on behalf of the Trustee by an authenticating agent shall be deemed to satisfy any requirement hereunder or in the Notes for the Trustee’s certificate of authentication. Such authenticating agent shall at all times be a
Person eligible to serve as trustee hereunder pursuant to Section 7.08. 
 Any corporation or other entity into which any
authenticating agent may be merged or converted or with which it may be consolidated, or any corporation or other entity resulting from any merger, consolidation or conversion to which any authenticating agent shall be a party, or any corporation or
other entity succeeding to the corporate trust business of any authenticating agent, shall be the successor of the authenticating agent hereunder, if such successor corporation or other entity is otherwise eligible under this Section 17.10,
without the execution or filing of any paper or any further act on the part of the parties hereto or the authenticating agent or such successor corporation or other entity. 

  
 76 

 Any authenticating agent may at any time resign by giving written notice of resignation to the
Trustee and to the Company. The Trustee may at any time terminate the agency of any authenticating agent by giving written notice of termination to such authenticating agent and to the Company. Upon receiving such a notice of resignation or upon
such a termination, or in case at any time any authenticating agent shall cease to be eligible under this Section, the Trustee may appoint a successor authenticating agent (which may be the Trustee), shall give written notice of such appointment to
the Company and shall deliver notice of such appointment to all Holders. 
 The Company agrees to pay to the authenticating agent from time
to time reasonable compensation for its services although the Company may terminate the authenticating agent, if it determines such agent’s fees to be unreasonable. 

The provisions of Section 7.02, Section 7.03, Section 7.04, Section 8.03 and this Section 17.10 shall be applicable
to any authenticating agent. 
 If an authenticating agent is appointed pursuant to this Section 17.10, the Notes may have endorsed
thereon, in addition to the Trustee’s certificate of authentication, an alternative certificate of authentication in the following form: 

__________________________, 
 as Authenticating Agent, certifies
that this is one of the Notes described in the within-named Indenture. 
 By: ____________________ 

Authorized Officer 

Section 17.11. Execution in Counterparts. This Indenture may be executed in any number of counterparts, each of which shall
be an original, but such counterparts shall together constitute but one and the same instrument. The exchange of copies of this Indenture and of signature pages by facsimile or PDF transmission shall constitute effective execution and delivery of
this Indenture as to the parties hereto and may be used in lieu of the original Indenture for all purposes. Signatures of the parties hereto transmitted by facsimile or PDF shall be deemed to be their original signatures for all purposes.

 Section 17.12. Severability. In the event any provision of this Indenture or in the Notes shall be invalid,
illegal or unenforceable, then (to the extent permitted by law) the validity, legality or enforceability of the remaining provisions shall not in any way be affected or impaired. 

Section 17.13. Waiver of Jury Trial. EACH OF THE COMPANY AND THE TRUSTEE HEREBY IRREVOCABLY WAIVES, TO THE FULLEST EXTENT
PERMITTED BY APPLICABLE LAW, ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY LEGAL PROCEEDING ARISING OUT OF OR RELATING TO THIS INDENTURE, THE NOTES OR THE TRANSACTIONS CONTEMPLATED HEREBY. 

Section 17.14. Force Majeure. In no event shall the Trustee be responsible or liable for any failure or delay in the
performance of its obligations hereunder arising out of or caused by, directly or indirectly, forces beyond its control, including, without limitation, strikes, work stoppages, accidents, acts of war or terrorism, civil or military disturbances,
nuclear or natural catastrophes or acts of God, and interruptions, loss or malfunctions of utilities, communications or computer (software and hardware) services; it being understood that the Trustee shall use reasonable efforts that are consistent
with accepted practices in the banking industry to resume performance as soon as practicable under the circumstances. 

  
 77 

 Section 17.15. Calculations. The Company shall be responsible for making all
calculations called for under the Notes. These calculations include, but are not limited to, determinations of the Last Reported Sale Prices of the Common Stock, the Daily VWAPs, the Daily Conversion Values, the Daily Settlement Amounts, accrued
interest payable on the Notes and the Conversion Rate of the Notes. The Company shall make all these calculations in good faith and, absent manifest error, the Company’s calculations shall be final and binding on Holders of Notes. The Company
shall provide a schedule of its calculations to each of the Trustee and the Conversion Agent, and each of the Trustee and Conversion Agent is entitled to rely conclusively upon the accuracy of the Company’s calculations without independent
verification. The Trustee will forward the Company’s calculations to any Holder of Notes upon the written request of that Holder at the sole cost and expense of the Company. 

Section 17.16. USA PATRIOT Act. The parties hereto acknowledge that in accordance with Section 326 of the USA PATRIOT
Act, the Trustee, like all financial institutions and in order to help fight the funding of terrorism and money laundering, is required to obtain, verify, and record information that identifies each person or legal entity that establishes a
relationship or opens an account with the Trustee. The parties to this Indenture agree that they will provide the Trustee with such information as it may request in order for the Trustee to satisfy the requirements of the USA PATRIOT Act.

 Section 17.17. Tax Withholding. The Company or the Trustee, as the case may be, shall be entitled to make a
deduction or withholding from any payment which it makes under this Indenture for or on account of any present or future taxes, duties or charges if and to the extent so required by any applicable law and any current or future regulations or
agreements thereunder or official interpretations thereof or any law implementing an intergovernmental approach thereto or by virtue of the relevant Holder failing to satisfy any certification or other requirements in respect of the Notes, in which
event the Company or the Trustee, as the case may be, shall make such payment after such withholding or deduction has been made and shall account to the relevant authorities for the amount so withheld or deducted and shall have no obligation to
gross up any payment hereunder or pay any additional amount as a result of such withholding tax. 
 [Remainder of page
intentionally left blank] 

  
 78 

 IN WITNESS WHEREOF, the parties hereto have caused this Indenture to be duly executed as of the
date first written above. 
  

			
	ZENDESK, INC.
		
	By:	 	/s/ Elena Gomez
		 	Name: Elena Gomez
		 	Title: Chief Financial Officer

  
 79 

 
			
	 WILMINGTON TRUST, NATIONAL ASSOCIATION, as Trustee

		
	By:	 	/s/ Lynn M. Steiner
		 	Name: Lynn M. Steiner
		 	Title: Vice President

  
 80 

 EXHIBIT A 

[FORM OF FACE OF NOTE] 
 [INCLUDE
FOLLOWING LEGEND IF A GLOBAL NOTE] 
 [UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY,
A NEW YORK CORPORATION (“DTC”), TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN
AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT HEREUNDER IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY
PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.] 
 [INCLUDE FOLLOWING LEGEND IF A
RESTRICTED SECURITY] 
 [THIS SECURITY AND THE COMMON STOCK, IF ANY, ISSUABLE UPON CONVERSION OF THIS SECURITY HAVE NOT BEEN REGISTERED
UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND MAY NOT BE OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED EXCEPT IN ACCORDANCE WITH THE FOLLOWING SENTENCE. BY ITS ACQUISITION HEREOF OR OF A BENEFICIAL INTEREST
HEREIN, THE ACQUIRER: 
 (1) REPRESENTS THAT IT AND ANY ACCOUNT FOR WHICH IT IS ACTING IS A “QUALIFIED INSTITUTIONAL
BUYER” (WITHIN THE MEANING OF RULE 144A UNDER THE SECURITIES ACT) AND THAT IT EXERCISES SOLE INVESTMENT DISCRETION WITH RESPECT TO EACH SUCH ACCOUNT, AND 

(2) AGREES FOR THE BENEFIT OF ZENDESK, INC. (THE “COMPANY”) THAT IT WILL NOT OFFER, SELL, PLEDGE OR OTHERWISE
TRANSFER THIS SECURITY OR ANY BENEFICIAL INTEREST HEREIN PRIOR TO THE DATE THAT IS THE LATER OF (X) ONE YEAR AFTER THE LAST ORIGINAL ISSUE DATE HEREOF OR SUCH SHORTER PERIOD OF TIME AS PERMITTED BY RULE 144 UNDER THE SECURITIES ACT OR ANY
SUCCESSOR PROVISION THERETO AND (Y) SUCH LATER DATE, IF ANY, AS MAY BE REQUIRED BY APPLICABLE LAW, EXCEPT: 
 (A) TO
THE COMPANY OR ANY SUBSIDIARY THEREOF, OR 
 (B) PURSUANT TO A REGISTRATION STATEMENT THAT HAS BECOME EFFECTIVE UNDER THE
SECURITIES ACT AND IS EFFECTIVE AT THE TIME OF SUCH TRANSFER, OR 
 (C) TO A PERSON THAT YOU REASONABLY BELIEVE TO BE A
QUALIFIED INSTITUTIONAL BUYER IN COMPLIANCE WITH RULE 144A UNDER THE SECURITIES ACT, OR 
 (D) PURSUANT TO AN EXEMPTION FROM
REGISTRATION PROVIDED BY RULE 144 UNDER THE SECURITIES ACT OR ANY OTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT. 

  
 A-1 

 PRIOR TO THE REGISTRATION OF ANY TRANSFER IN ACCORDANCE WITH CLAUSE (2)(D) ABOVE, THE
COMPANY AND THE TRUSTEE RESERVE THE RIGHT TO REQUIRE THE DELIVERY OF SUCH LEGAL OPINIONS, CERTIFICATIONS OR OTHER EVIDENCE AS MAY REASONABLY BE REQUIRED IN ORDER TO DETERMINE THAT THE PROPOSED TRANSFER IS BEING MADE IN COMPLIANCE WITH THE SECURITIES
ACT AND APPLICABLE STATE SECURITIES LAWS. NO REPRESENTATION IS MADE AS TO THE AVAILABILITY OF ANY EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT. 

NO AFFILIATE (AS DEFINED IN RULE 144 UNDER THE SECURITIES ACT) OF THE COMPANY OR PERSON THAT HAS BEEN AN AFFILIATE (AS DEFINED IN RULE 144
UNDER THE SECURITIES ACT) OF THE COMPANY DURING THE IMMEDIATELY PRECEDING THREE MONTHS MAY PURCHASE, OTHERWISE ACQUIRE OR HOLD THIS SECURITY OR A BENEFICIAL INTEREST HEREIN.]1 

 

	1 	The Restrictive Legend shall be deemed removed from the face of this Note without further action by the Company, Trustee or the Holders of this Note at such time and in the manner provided under Section 2.05 of the
Indenture. 

  
 A-2 

 Zendesk, Inc. 

0.25% Convertible Senior Note due 2023 
  

							
	No. [            ]	  		  	[Initially]2 $[            ]	  	

 CUSIP No. [            ]3 
 Zendesk, Inc., a corporation duly organized and validly existing under the laws of the
State of Delaware (the “Company,” which term includes any successor corporation or other entity under the Indenture referred to on the reverse hereof), for value received hereby promises to pay to [CEDE & CO.]4 [            ]5, or registered assigns, the principal sum [as set forth in the
“Schedule of Exchanges of Notes” attached hereto6 [of
$[            ]]7, which amount, taken together with the principal amounts of all other outstanding Notes, shall not, unless
permitted by the Indenture, exceed $500,000,000 in the aggregate at any time (or $575,000,000 if the Initial Purchasers exercise their option to purchase additional Notes as set forth in the Purchase Agreement), in accordance with the rules and
procedures of the Depositary, on March 15, 2023, and interest thereon as set forth below. 
 This Note shall bear interest at the rate
of 0.25% per year from March 20, 2018, or from the most recent date to which interest had been paid or provided for to, but excluding, the next scheduled Interest Payment Date until March 15, 2023. Interest is payable semi-annually in
arrears on each March 15 and September 15, commencing on September 15, 2018, to Holders of record at the close of business on the preceding March 1 and September 1 (whether or not such day is a Business Day), respectively.
Additional Interest will be payable as set forth in Section 4.06(d), Section 4.06(e) and Section 6.03 of the within-mentioned Indenture, and any reference to interest on, or in respect of, any Note therein shall be deemed to include
Additional Interest if, in such context, Additional Interest is, was or would be payable pursuant to any of such Section 4.06(d), Section 4.06(e) or Section 6.03, and any express mention of the payment of Additional Interest in any
provision therein shall not be construed as excluding Additional Interest in those provisions thereof where such express mention is not made. 

Any Defaulted Amounts shall accrue interest per annum at the rate borne by the Notes, subject to the enforceability thereof under applicable
law, from, and including, the relevant payment date to, but excluding, the date on which such Defaulted Amounts shall have been paid by the Company, at its election, in accordance with Section 2.03(c) of the Indenture. 

The Company shall pay, or cause the Paying Agent to pay, the principal of and interest on this Note, if and so long as such Note is a Global
Note, in immediately available funds to the Depositary or its nominee, as the case may be, as the registered Holder of such Note. As provided in and subject to the provisions of the Indenture, the Company shall pay, or cause the Paying Agent to pay,
the principal of any Notes (other than Notes that are Global Notes) at the office or agency designated by the Company for that purpose. The Company has initially designated the Trustee as its Paying Agent and Note Registrar in respect of the Notes
and its Corporate Trust Office located in the United States of America as a place where Notes may be presented for payment or for registration of transfer and exchange. 

 

	2 	Include if a global note. 

	3 	At such time as the Company notifies the Trustee that the Restrictive Legend is to be removed in accordance with the Indenture, the CUSIP number for this Note shall be deemed to be
[            ]. 

	4 	Include if a global note. 

	5 	Include if a physical note. 

	6 	Include if a global note. 

	7 	Include if a physical note. 

  
 A-3 

 Reference is made to the further provisions of this Note set forth on the reverse hereof,
including, without limitation, provisions giving the Holder of this Note the right to convert this Note into cash, shares of Common Stock or a combination of cash and shares of Common Stock, as applicable, on the terms and subject to the limitations
set forth in the Indenture. Such further provisions shall for all purposes have the same effect as though fully set forth at this place. 

This Note, and any claim, controversy or dispute arising under or related to this Note, shall be construed in accordance with and governed
by the laws of the State of New York (without regard to the conflicts of laws provisions thereof). 
 In the case of any conflict
between this Note and the Indenture, the provisions of the Indenture shall control and govern. 
 This Note shall not be valid or become
obligatory for any purpose until the certificate of authentication hereon shall have been signed manually by the Trustee or a duly authorized authenticating agent under the Indenture. 

[Remainder of page intentionally left blank] 

  
 A-4 

 IN WITNESS WHEREOF, the Company has caused this Note to be duly executed. 

 

			
	ZENDESK, INC.
		
	By:	 	 
		 	Name:
		 	Title:

 Dated: 
  

			
	 TRUSTEE’S CERTIFICATE OF AUTHENTICATION

 
 WILMINGTON TRUST, NATIONAL ASSOCIATION as Trustee, certifies that this
is one of the Notes described in the within-named Indenture.

		
	By:	 	 
		 	Authorized Officer

  
 A-5 

 [FORM OF REVERSE OF NOTE] 

Zendesk, Inc. 
 0.25% Convertible
Senior Note due 2023 
 This Note is one of a duly authorized issue of Notes of the Company, designated as its 0.25% Convertible Senior
Notes due 2023 (the “Notes”), limited to the aggregate principal amount of $500,000,000 (as increased by an amount equal to the aggregate principal amount of any additional Notes purchased by the Initial Purchasers pursuant to the
exercise of their option to purchase additional Notes as set forth in the Purchase Agreement) all issued or to be issued under and pursuant to an Indenture dated as of March 20, 2018 (the “Indenture”), between the Company and
Wilmington Trust, National Association (the “Trustee”), to which Indenture and all indentures supplemental thereto reference is hereby made for a description of the rights, limitations of rights, obligations, duties and immunities
thereunder of the Trustee, the Company and the Holders of the Notes. Additional Notes may be issued in an unlimited aggregate principal amount, subject to certain conditions specified in the Indenture. Capitalized terms used in this Note and not
defined in this Note shall have the respective meanings set forth in the Indenture. 
 In case certain Events of Default shall have occurred
and be continuing, the principal of, and interest on, all Notes may be declared, by either the Trustee or Holders of at least 25% in aggregate principal amount of Notes then outstanding, and upon said declaration shall become, due and payable, in
the manner, with the effect and subject to the conditions and certain exceptions set forth in the Indenture. 
 Subject to the terms and
conditions of the Indenture, the Company will make all payments and deliveries in respect of the Fundamental Change Repurchase Price on the Fundamental Change Repurchase Date and the principal amount on the Maturity Date, as the case may be, to the
Holder who surrenders a Note to a Paying Agent to collect such payments in respect of the Note. The Company will pay cash amounts in money of the United States that at the time of payment is legal tender for payment of public and private debts. 

The Indenture contains provisions permitting the Company and the Trustee in certain circumstances, without the consent of the Holders of the
Notes, and in certain other circumstances, with the consent of the Holders of not less than a majority in aggregate principal amount of the Notes at the time outstanding, evidenced as in the Indenture provided, to execute supplemental indentures
modifying the terms of the Indenture and the Notes as described therein. It is also provided in the Indenture that, subject to certain exceptions, the Holders of a majority in aggregate principal amount of the Notes at the time outstanding may on
behalf of the Holders of all of the Notes waive any past Default or Event of Default under the Indenture and its consequences. 

Notwithstanding any other provision of the Indenture or any provision of this Note, each Holder shall have the contractual right to receive
payment or delivery, as the case may be, of (x) the principal (including the Fundamental Change Repurchase Price, if applicable) of, (y) accrued and unpaid interest, if any, on, and (z) the consideration due upon conversion of, this
Note, on or after the respective due dates expressed or provided for in this Note or in the Indenture, and the contractual right to institute suit for the enforcement of any such payment or delivery, as the case may be, on or after such respective
dates, shall not be amended without the consent of each Holder. 

  
 A-6 

 The Notes are issuable in registered form without coupons in denominations of $1,000 principal
amount and integral multiples thereof. At the office or agency of the Company referred to on the face hereof, and in the manner and subject to the limitations provided in the Indenture, Notes may be exchanged for a like aggregate principal amount of
Notes of other authorized denominations, without payment of any service charge but, if required by the Company or Trustee, with payment of a sum sufficient to cover any transfer or similar tax that may be imposed in connection therewith as a result
of the name of the Holder of the new Notes issued upon such exchange of Notes being different from the name of the Holder of the old Notes surrendered for such exchange. 

The Notes are not subject to redemption through the operation of any sinking fund or otherwise. 

Upon the occurrence of a Fundamental Change, the Holder has the right, at such Holder’s option, to require the Company to repurchase for
cash all of such Holder’s Notes or any portion thereof (in principal amounts of $1,000 or integral multiples thereof) on the Fundamental Change Repurchase Date at a price equal to the Fundamental Change Repurchase Price. 

Subject to the provisions of the Indenture, the Holder hereof has the right, at its option, during certain periods and upon the occurrence of
certain conditions specified in the Indenture, prior to the close of business on the second Scheduled Trading Day immediately preceding the Maturity Date, to convert any Notes or portion thereof that is $1,000 or an integral multiple thereof, into
cash, shares of Common Stock or a combination of cash and shares of Common Stock, as applicable, at the Conversion Rate specified in the Indenture, as adjusted from time to time as provided in the Indenture. 

  
 A-7 

 ABBREVIATIONS 

The following abbreviations, when used in the inscription of the face of this Note, shall be construed as though they were written out in full
according to applicable laws or regulations: 
 TEN COM = as tenants in common 

UNIF GIFT MIN ACT = Uniform Gifts to Minors Act 
 CUST =
Custodian 
 TEN ENT = as tenants by the entireties 
 JT TEN =
joint tenants with right of survivorship and not as tenants in common 
 Additional abbreviations may also be used though not in the above
list. 

  
 A-8 

 SCHEDULE A8 

SCHEDULE OF EXCHANGES OF NOTES 

Zendesk, Inc. 
 0.25% Convertible
Senior Notes due 2023 
 The initial principal amount of this Global Note is _______ DOLLARS ($[_________]). The following increases or
decreases in this Global Note have been made: 
  

									
	 Date of exchange
	  	 Amount of
decrease in
principal amount
of this Global
Note
	  	 Amount of
increase in
principal amount
of this Global
Note
	  	 Principal amount
of this Global Note
following
such
decrease or
increase
	  	 Signature of
authorized
signatory of
Trustee
or
Custodian

					
	  
	  	  
	  	  
	  	  
	  	  

					
	  
	  	  
	  	  
	  	  
	  	  

					
	  
	  	  
	  	  
	  	  
	  	  

					
	  
	  	  
	  	  
	  	  
	  	  

					
	  
	  	  
	  	  
	  	  
	  	  

					
	  
	  	  
	  	  
	  	  
	  	  

					
	  
	  	  
	  	  
	  	  
	  	  

					
	  
	  	  
	  	  
	  	  
	  	  

					
	  
	  	  
	  	  
	  	  
	  	  

					
	  
	  	  
	  	  
	  	  
	  	  

					
	  
	  	  
	  	  
	  	  
	  	  

					
	  
	  	  
	  	  
	  	  
	  	  

					
	  
	  	  
	  	  
	  	  
	  	  

					
	  
	  	  
	  	  
	  	  
	  	  

					
	  
	  	  
	  	  
	  	  
	  	  

					
	  
	  	  
	  	  
	  	  
	  	  

					
	  
	  	  
	  	  
	  	  
	  	  

					
	  
	  	  
	  	  
	  	  
	  	  

					
	  
	  	  
	  	  
	  	  
	  	  

					
	  
	  	  
	  	  
	  	  
	  	  

					
	  
	  	  
	  	  
	  	  
	  	  

					
	  
	  	  
	  	  
	  	  
	  	  

  

	8 	Include if a global note. 

  
 A-9 

 ATTACHMENT 1 

[FORM OF NOTICE OF CONVERSION] 

Zendesk, Inc. 
 0.25% Convertible
Senior Note due 2023 
 To: Wilmington Trust, National Association 

50 South Sixth Street, Suite 1290 

Minneapolis, MN 55402 
 Attention:
Zendesk, Inc. Account Manager 
 The undersigned registered owner of this Note hereby exercises the option to convert this Note, or the
portion hereof (that is $1,000 principal amount or an integral multiple thereof) below designated, into cash, shares of Common Stock or a combination of cash and shares of Common Stock, at the Company’s election, in accordance with the terms of
the Indenture referred to in this Note, and directs that any cash payable and any shares of Common Stock issuable and deliverable upon such conversion, together with any cash for any fractional share, and any Notes representing any unconverted
principal amount hereof, be issued and delivered to the registered Holder hereof unless a different name has been indicated below. If any shares of Common Stock or any portion of this Note not converted are to be issued in the name of a Person other
than the undersigned, the undersigned will pay all documentary, stamp or similar issue or transfer taxes, if any in accordance with Section 14.02(d) and Section 14.02(e) of the Indenture. Any amount required to be paid to the undersigned
on account of interest accompanies this Note. Capitalized terms used herein but not defined shall have the meanings ascribed to such terms in the Indenture. 
  

									
	Dated: __________________________	 	__________________________________	 		 	
					
		 	__________________________________	 		 		 	
		 	Signature(s)	 		 		 	

  

	
	   

	Signature Guarantee
	
	Signature(s) must be guaranteed by an eligible Guarantor Institution (banks, stock brokers, savings and loan associations and credit unions) with membership in an approved signature guarantee medallion program pursuant to
Securities and Exchange Commission Rule 17Ad-15 if shares of Common Stock are to be issued, or Notes are to be delivered, other than to and in the name of the registered holder.

  
 A-10 

	
	Fill in for registration of shares if to be issued, and Notes if to be delivered, other than to and in the name of the registered holder:
	
	   

	(Name)

	
	
	   

	(Street Address)

	
	
	   

	(City, State and Zip Code)
	Please print name and address

  

	
	Principal amount to be converted (if less than all): $______,000
	
	NOTICE: The above signature(s) of the Holder(s) hereof must correspond with the name as written upon the face of the Note in every particular without alteration or enlargement or any change whatever.
	
	   

	Social Security or Other Taxpayer Identification Number

  
 A-11 

 ATTACHMENT 2 

[FORM OF FUNDAMENTAL CHANGE REPURCHASE NOTICE] 

Zendesk, Inc. 
 0.25% Convertible
Senior Note due 2023 
 To: Paying Agent 
 The
undersigned registered owner of this Note hereby acknowledges receipt of a notice from Zendesk, Inc. (the “Company”) as to the occurrence of a Fundamental Change with respect to the Company and specifying the Fundamental Change
Repurchase Date and requests and instructs the Company to pay to the registered holder hereof in accordance with Section 15.02 of the Indenture referred to in this Note (1) the entire principal amount of this Note, or the portion thereof
(that is $1,000 principal amount or an integral multiple thereof) below designated, and (2) if such Fundamental Change Repurchase Date does not fall during the period after a Regular Record Date and on or prior to the corresponding Interest
Payment Date, accrued and unpaid interest, if any, thereon to, but excluding, such Fundamental Change Repurchase Date. Capitalized terms used herein but not defined shall have the meanings ascribed to such terms in the Indenture. 

In the case of Physical Notes, the certificate numbers of the Notes to be repurchased are as set forth below: 

 

							
	Dated: _______________________	 		 	
			
		 		 	 
		 		 	Signature(s)
			
		 		 	 
		 		 	Social Security or Other Taxpayer
		 		 	Identification Number
			
		 		 	 Principal amount to be repaid (if less than all):

$______,000

			
		 		 	NOTICE: The above signature(s) of the Holder(s) hereof must correspond with the name as written upon the face of the Note in every particular without alteration or enlargement or any change whatever.

  
 A-12 

 ATTACHMENT 3 

[FORM OF ASSIGNMENT AND TRANSFER] 
 For value
received ____________________________ hereby sell(s), assign(s) and transfer(s) unto _________________ (Please insert social security or Taxpayer Identification Number of assignee) the within Note, and hereby irrevocably constitutes and appoints
_____________________ attorney to transfer the said Note on the books of the Company, with full power of substitution in the premises. 
 In connection with
any transfer of the within Note occurring prior to the Resale Restriction Termination Date, as defined in the Indenture governing such Note, the undersigned confirms that such Note is being transferred: 

☐ To Zendesk, Inc. or a subsidiary thereof; or 
 ☐
Pursuant to a registration statement that has become or been declared effective under the Securities Act of 1933, as amended; or 
 ☐ Pursuant to and
in compliance with Rule 144A under the Securities Act of 1933, as amended; or 
 ☐ Pursuant to and in compliance with Rule 144 under the Securities
Act of 1933, as amended, or any other available exemption from the registration requirements of the Securities Act of 1933, as amended. 

  
 A-13 

	
	Dated: ________________________
	
	   

	
	 
	Signature(s)
	
	 
	Signature Guarantee
	
	Signature(s) must be guaranteed by an eligible Guarantor Institution (banks, stockbrokers, savings and loan associations and credit unions) with membership in an approved signature guarantee medallion program pursuantto
Securities and Exchange Commission Rule 17Ad-15 if Notes are to be delivered, other than to and in the name of the registered holder.

 NOTICE: The signature on the assignment must correspond with the name as written upon the face of the Note in every particular
without alteration or enlargement or any change whatever. 

  
 A-14EX-10.1

 Exhibit 10.1 

[Dealer Address]9 

(1) Opening Transaction 
  

			
	To:	  	 Zendesk, Inc.
 1019 Market Street 
San
Francisco, California 94103
Attention: Elena Gomez
Telephone No.: (415) 418-7506

		
	A/C:	  	[Insert Account Number]
		
	From:	  	[Dealer]
		
	Re:	  	[Base]10[Additional]11 Call Option Transaction
		
	Ref. No:	  	[Insert Reference Number]
		
	Date:	  	March [•], 2018

 Dear Ladies and Gentlemen: 

The purpose of this communication (this “Confirmation”) is to set forth the terms and conditions of the
[above-referenced]12[call option]13 transaction entered into on the Trade Date specified below (the “Transaction”)
between [Dealer] (“Dealer”) and Zendesk, Inc. (“Counterparty”). This communication constitutes a “Confirmation” as referred to in the 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”). Certain defined terms used herein have the meanings assigned to them in the Offering Memorandum dated March [ ], 2018 (as so supplemented, the
“Offering Memorandum”) relating to the USD[•] principal amount of [    ]% Convertible Senior Notes due 2023 (the “Base Convertible Securities”) issued by Counterparty (as increased by up to
an additional USD[•] principal amount of [    ]% Convertible Senior Notes due 2023 [that may be]14 issued pursuant to the option to purchase additional convertible
securities [exercised on the date hereof]15 (the “Optional Convertible Securities” and, together with the Base Convertible Securities, the “Convertible
Securities”)) pursuant to an Indenture [to be] dated March [    ], 2018 between Counterparty and [                ], as trustee (the
“Indenture”). In the event of any inconsistency between the terms defined in the Indenture and this Confirmation, this Confirmation shall govern. The parties acknowledge that this Confirmation is entered into on the date hereof with
the understanding that (i) definitions set forth in the Indenture that are also defined herein by reference to the Indenture and (ii) sections of the Indenture that are referred to herein, in each case, will conform to the descriptions
thereof in the Offering Memorandum. If any such definitions in the Indenture or any such sections of the Indenture differ from the descriptions thereof in the Offering Memorandum, the descriptions thereof in the Offering Memorandum will govern for
purposes of this Confirmation. [For the avoidance of doubt, subject to the foregoing, references herein to sections of the Indenture are based on the draft of the Indenture most recently reviewed by the parties at the time of execution of this
Confirmation. If any relevant sections of the Indenture are changed, added or renumbered between the execution of this Confirmation and the execution of the Indenture, the parties will amend this Confirmation in good faith and in a commercially
reasonable manner to preserve the economic intent of the parties as evidenced by such draft of the Indenture. In addition, subject to the foregoing, the]16 [The]17 parties acknowledge that references to the Indenture herein are references to the Indenture as in effect on the date hereof and if the Indenture is, or the Convertible Securities are, amended,
modified or supplemented following the date hereof or the date of their execution, respectively, any such amendment, modification or supplement (other than any amendment, modification or supplement (i) pursuant to Section 14.0718 of the Indenture, subject to the provisions opposite the caption “Discretionary Adjustments” in Section 2 hereof, or (ii) pursuant to Section 10.01(n)19 of the Indenture that, as determined by the Calculation Agent in good faith and in a commercially reasonable manner, conforms the Indenture to the description of Convertible Securities in the
Offering Memorandum) will be disregarded for purposes of this Confirmation unless the parties agree otherwise in writing. 
  

	9 	Include for other Dealers 

	10 	Include for base capped call. 

	11 	Include for additional capped call. 

	12 	Include for dealers as applicable. 

	13 	Include for dealers as applicable. 

	14 	Include for base capped call. 

 Each party is hereby advised, and each such party acknowledges, that the other party has engaged
in, or refrained from engaging in, substantial financial transactions and has taken other material actions in reliance upon the parties’ entry into the Transaction to which this Confirmation relates on the terms and conditions set forth below.

 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 date hereof
(but without any Schedule except for (i) the election of US Dollars (“USD”) as the Termination Currency, (ii) the election of the laws of the State of New York as the governing law (without reference to choice of law
doctrine), )[, (iii) the election of an executed guarantee of [__________] (“Guarantor”) dated as of the Trade Date in customary form as a Credit Support Document, (iv) the election of Guarantor as Credit Support Provider in
relation to Dealer]20 and [v][(iii)](A) the election that the “Cross Default” provisions of Section 5(a)(vi) of the Agreement shall apply to Dealer with a “Threshold
Amount” of three percent of Dealer’s parent’s shareholders’ equity; provided that “Specified Indebtedness” shall not include obligations in respect of deposits received in the ordinary course of Dealer’s
banking business, (B) the phrase “or becoming capable at such time of being declared” shall be deleted from clause (1) of such Section 5(a)(vi) and (C) the following language shall be added to the end thereof
“Notwithstanding the foregoing, a default under subsection (2) hereof shall not constitute an Event of Default if (x) the default was caused solely by error or omission of an administrative or operational nature; (y) funds were
available to enable the party to make the payment when due; and (z) 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 among this Confirmation, the Equity Definitions, the 2006 Definitions or the Agreement, the following shall prevail in the order of precedence indicated: (i) this Confirmation; (ii) the Equity Definitions;
(iii) the 2006 Definitions; and (iv) the Agreement. For the avoidance of doubt, except to the extent of an express conflict, the application of any provision of this Confirmation, the Agreement, the Equity Definitions or the 2006
Definitions shall not be construed to exclude or limit any other provision of this Confirmation, the Agreement, the Equity Definitions or the 2006 Definitions. 

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. 

 

	15 	Include for additional capped call. 

	16 	Include for base capped call 

	17 	Include if Indenture has been executed at time of execution of this Confirmation 

	18 	Include cross reference to the Indenture section relating to Merger Events. 

	19 	Include cross reference to Indenture section permitting amendments without holder consent to conform the Indenture to the Description of Notes. 

	20 	To be included for dealers without a long term debt rating. 

 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:
	  	[                 ], 2018
		
	 Effective Date:
	  	The closing date of the [initial]21 issuance of the Convertible Securities [issued pursuant to the option to purchase additional Convertible Securities exercised on the date
hereof]22.
		
	 Option Style:
	  	Modified American, as described under “Procedures for Exercise” below.
		
	 Option Type:
	  	Call
		
	 Seller:
	  	Dealer
		
	 Buyer:
	  	Counterparty
		
	 Shares:
	  	The Common Stock of Counterparty, par value USD0.01 (Ticker Symbol: “ZEN”).
		
	 Number of Options:
	  	[The number of Base Convertible Securities in denominations of USD1,000 principal amount issued by Counterparty on the closing date for the initial issuance of the Convertible Securities.]23[The number of Optional Convertible Securities in denominations of USD1,000 principal amount purchased by the Initial Purchasers (as defined in the Purchase Agreement), at their option pursuant to
Section 2 of the Purchase Agreement (as defined below).]24 For the avoidance of doubt, the Number of Options outstanding shall be reduced by each exercise of Options hereunder. In no event
will the Number of Options be less than zero.
		
	 Applicable Percentage:
	  	[__]%25
		
	 Option Entitlement:
	  	A number equal to the product of the Applicable Percentage and [_____]26
		
	 Make-Whole Fundamental Change Adjustment:
	  	Any adjustment to the Conversion Rate pursuant to Section 14.0327 of the Indenture.
		
	 Discretionary Adjustment:
	  	Any adjustment to the Conversion Rate pursuant to Section 14.04(h)28 of the Indenture.
		
	 Strike Price:
	  	USD[_____]29
		
	 Cap Price:
	  	USD[_____]
		
	 Rounding of Strike Price/Cap Price/Option Entitlement:
	  	In connection with any adjustment to the Option Entitlement or Strike Price, the Option Entitlement or Strike Price, as the case may be, shall be rounded by the Calculation Agent in accordance with the provisions of the Indenture
relating to rounding of the “Conversion Price” or the “Conversion Rate”, as applicable (each as defined in the Indenture). In connection with any adjustment to the Cap Price hereunder, the Calculation Agent will round the
adjusted Cap Price to the nearest USD0.0001.

  

	21 	Include for base capped call. 

	22 	Include for additional capped call. 

	23 	Include for base capped call. 

	24 	Include for additional capped call. 

	25 	To be Dealer’s percentage of the overall capped call transaction. 

	26 	To be the initial “Conversion Rate.” 

	27 	Insert cross references to sections of the Indenture addressing “make whole fundamental change” adjustments to the Conversion Rate. 

	28 	Insert cross reference to sections of the Indenture permitting discretionary adjustments to the Conversion Rate by Counterparty. 

	29 	To be the initial “Conversion Price.” 

			
	 Number of Shares:
	  	As of any date, a number of Shares equal to the product of the Number of Options and the Option Entitlement.
		
	 Premium:
	  	USD[_____]
		
	 Premium Payment Date:
	  	The Effective Date
		
	 Exchange:
	  	The New York Stock Exchange
		
	 Related Exchange:
	  	All Exchanges
		
	Procedures for Exercise:	  	
		
	 Exercise Dates:
	  	Each Conversion Date.
		
	 Conversion Date:
	  	[With respect to any conversion of a Convertible Security (other than (x) any conversion of Convertible Securities with a “Conversion Date” (as defined in the Indenture) occurring prior to the Free Convertibility
Date or (y) any conversion of Convertible Securities in respect of which holder(s) of such Convertible Securities would be entitled to an increase in the Conversion Rate pursuant to a Make-Whole Fundamental Change Adjustment (any such
conversion described in clause (x) or clause (y), an “Early Conversion”), to which the provisions of Section 8(b)(iii) of this Confirmation shall apply), the “Conversion Date” (as defined in the Indenture),
provided that, no Conversion Date shall be deemed to have occurred with respect to Exchanged Securities (such Convertible Securities, other than Exchanged Securities, the “Relevant Convertible Securities” for such Conversion
Date).]30
		
		  	[With respect to any conversion of a Convertible Security (other than (x) any conversion of Convertible Securities with a “Conversion Date” (as defined in the Indenture) occurring prior to the Free Convertibility
Date or (y) any conversion of Convertible Securities in respect of which holder(s) of such Convertible Securities would be entitled to an increase in the Conversion Rate pursuant to a Make-Whole Fundamental Change Adjustment (any such
conversion described in clause (x) or clause (y), an “Early Conversion”), to which the provisions of Section 8(b)(iii) of this Confirmation shall apply), the “Conversion Date” (as defined in the Indenture) for
Convertible Securities that are not “Relevant Convertible Securities” under (and as defined in) the confirmation between the parties hereto regarding the Base Call Option Transaction dated March [    ], 2018
[(Transaction Ref. No. [            ])]31 (the “Base Call Option Transaction Confirmation”), provided that, no
Conversion Date shall be deemed to have occurred with respect to Exchanged Securities (such Convertible Securities, other than Exchanged Securities, the “Relevant Convertible Securities” for such Conversion Date). For the purposes
of determining whether any Convertible Securities will be Relevant Convertible Securities hereunder or “Relevant Convertible Securities” under the Base Call Option Transaction Confirmation, Convertible Securities that are converted
pursuant to the Indenture shall be allocated first to the Base Call Option Transaction Confirmation until all Options thereunder are exercised or terminated.]32

  

	30 	Include for base capped call. 

	31 	Include as applicable. 

	32 	Include for additional capped call. 

			
	 Free Convertibility Date:
	  	[                    ], 20[    ]
		
	 Exchanged Securities:
	  	With respect to any Conversion Date, any Convertible Securities with respect to which Counterparty makes the election described in Section 14.1233 of the Indenture and the
financial institution designated by Counterparty accepts such Convertible Securities in accordance with Section 14.1234 of the Indenture, as long as Counterparty does not submit a Notice of
Exercise in respect thereof.
		
	 Expiration Date:
	  	[The earlier of (i) the last day on which any Convertible Securities remain outstanding and (ii) March 15, 2023, subject to earlier exercise.]35
		
	 Automatic Exercise on Conversion Dates:
	  	Applicable, which means that on each Conversion Date occurring on or after the Free Convertibility Date, a number of Options equal to the number of Relevant Convertible Securities for such Conversion Date in denominations of
USD1,000 principal amount shall be automatically exercised, subject to “Notice of Exercise” below.
		
	 Notice Deadline:
	  	In respect of any exercise of Options hereunder on any Conversion Date on or after the Free Convertibility Date, 5:00 P.M., New York City time, on the “Scheduled Trading Day” (as defined in the Indenture) immediately
preceding the “Maturity Date” (as defined in the Indenture).
		
	 Notice of Exercise:
	  	Counterparty shall notify Dealer in writing prior to the Notice Deadline of the number of Relevant Convertible Securities being converted on the related Conversion Date[; provided, that any “Notice of Exercise”
delivered to Dealer pursuant to the Base Call Option Transaction Confirmation shall be deemed to be a Notice of Exercise pursuant to this Confirmation and the terms of such Notice of Exercise shall apply, mutatis mutandis, to this
Confirmation]36. For the avoidance of doubt, if Counterparty fails to give such notice when due in respect of any exercise of Options hereunder with a Conversion Date occurring on or after the
Free Convertibility Date, Automatic Exercise shall apply and the Conversion Date shall be deemed to be the Notice Deadline.
		
	 Notice of Final Convertible Security Settlement Method:
	  	In addition, Counterparty shall notify Dealer in writing before 5:00 P.M., New York City time, on the “Scheduled Trading Day” (as defined in the Indenture) immediately preceding the Free Convertibility Date of the
settlement method (and, if applicable, the “Specified Dollar Amount” (as defined in the Indenture)) elected (or deemed to be elected) with respect to Relevant Convertible Securities with a Conversion Date occurring on or after the Free
Convertibility Date (any such notice, a “Notice of Final Convertible Security Settlement Method”); provided, that if Counterparty does not timely deliver the Notice of Final Convertible Security Settlement Method then the
Notice of Final Convertible Security Settlement Method shall be deemed timely given and the Applicable Settlement Method shall be a Cash Election with a “Specified Dollar Amount” (as defined in the Indenture) of USD1,000. Counterparty
acknowledges its responsibilities under applicable securities laws, and in particular Section 9 and Section 10(b) of the Exchange Act and the rules and regulations thereunder, in respect of any such deemed settlement method election as set
forth in the proviso in the immediately preceding sentence.

			
	 Dealer’s Telephone Number and Telex and/or Facsimile Number and Contact Details for purpose of Giving
Notice:
	  	As specified in Section 6(b) below.
		
	Settlement Terms:	  	
		
	 Settlement Date:
	  	For any Exercise Date, the date one Settlement Cycle following the final day of the Cash Settlement Averaging Period; provided that the Settlement Date shall not be prior to the Exchange Business Day immediately following
the date Counterparty provides the Notice of Delivery Obligation prior to 5:00 P.M., New York City time.
		
	 Delivery Obligation:
	  	In lieu of the obligations set forth in Sections 8.1 and 9.1 of the Equity Definitions, and subject to “Notice of Exercise” above and “Method of Adjustment”, “Discretionary Adjustments”,
“Consequences of Merger Events/Tender Offers”, “Consequences of Announcement Events” and Section 8(l) below, in respect of an Exercise Date, Dealer will deliver to Counterparty on the related Settlement Date (the
“Delivery Obligation”), (i) a number of Shares equal to the product of the Applicable Percentage and the aggregate number of Shares, if any, that Counterparty would be obligated to deliver to the holder(s) of the Relevant
Convertible Securities for such Conversion Date pursuant to Section 14.02(a)(iv)37 of the Indenture (except that such number of Shares shall be rounded down to the nearest whole number) and
cash in lieu of any fractional Share resulting from such rounding and/or (ii) the product of the Applicable Percentage and the aggregate amount of cash, if any, in excess of the principal amount of the Relevant Convertible Securities that
Counterparty would be obligated to deliver to holder(s) of the Relevant Convertible Securities for such Conversion Date pursuant to Section 14.02(a)(iv)38 of the Indenture, determined, for
each of clauses (i) and (ii), by the Calculation Agent in a commercially reasonable manner by reference to such Sections of the Indenture as if Counterparty had elected to satisfy its conversion obligation in respect of such Relevant
Convertible Securities by the Applicable Settlement Method, notwithstanding any different actual election by Counterparty with respect to the settlement of such Relevant Convertible Securities; provided that if the “Daily VWAP” (as
defined in the Indenture) for any “Trading Day” (as defined in the Indenture pursuant to the second proviso in such definition) during the Cash Settlement Averaging Period is greater than the Cap Price, then clause (b) of the relevant
“Daily Conversion Value” (as defined in the Indenture) for such “Trading Day” shall be determined as if such “Daily VWAP” for such “Trading Day” were deemed to equal the Cap Price; provided further that
the Delivery Obligation shall be determined excluding any Shares and/or cash that Counterparty is obligated to deliver to holder(s) of the Relevant Convertible Securities as a direct or indirect result of any adjustments to the Conversion Rate
pursuant to a Discretionary Adjustment and any interest payment that Counterparty is (or would have been) obligated to deliver to holder(s) of the Relevant Convertible Securities for such Conversion Date. Notwithstanding the foregoing, if, in
respect of any Exercise Date, (x)(I) the number of Shares included in the Delivery Obligation multiplied by the Share Obligation Value Price plus (II) the amount of cash included in the Delivery Obligation, would otherwise exceed
(y) the product of the Applicable Percentage and the relevant Net Convertible Share Obligation Value, such number of Shares and such amount of cash shall be proportionately reduced to the extent necessary to eliminate such excess.

  

	33 	Insert cross references to sections of the Indenture providing for exchange in lieu of conversion 

	34 	Insert cross references to sections of the Indenture providing for exchange in lieu of conversion 

	35 	Under review by tax advisors to Counterparty. 

	36 	Include for additional capped call confirmation only. 

	37 	Insert cross references to sections of the Indenture defining the share delivery obligation 

	38 	Insert cross references to sections of the Indenture defining the cash delivery obligation 

			
	 Applicable Settlement Method:
	  	For any Relevant Convertible Securities, if Counterparty has notified Dealer in the Notice of Final Convertible Security Settlement Method that it has elected, or is deemed to have elected, to satisfy its conversion obligation in
respect of such Relevant Convertible Securities in cash or in a combination of cash and Shares in accordance with Section 14.02(a)39 of the Indenture (a “Cash Election”) with
a “Specified Dollar Amount” (as defined in the Indenture) of at least USD1,000, the Applicable Settlement Method shall be the settlement method actually so elected, or deemed to be elected, by Counterparty in respect of such Relevant
Convertible Securities (the “Convertible Securities Settlement Method”); otherwise, the Applicable Settlement Method shall assume Counterparty had made a Cash Election with respect to such Relevant Convertible Securities (a
“Deemed Cash Election”) with a “Specified Dollar Amount” (as defined in the Indenture) of USD1,000 per Relevant Convertible Security and the Delivery Obligation shall be determined by the Calculation Agent pursuant to
Section 14.02(a)(iv)(C)40 of the Indenture as if the relevant “Observation Period” (as defined in the Indenture) were the Cash Settlement Averaging Period.
		
	 Cash Settlement Averaging Period:
	  	The 40 “Trading Days” (as defined in the Indenture pursuant to the second proviso in such definition) commencing on the 41st “Scheduled Trading Day” (as defined in the Indenture) prior to the “Maturity
Date” (as defined in the Indenture).
		
	 Notice of Delivery Obligation:
	  	No later than the Exchange Business Day immediately following the last day of the Cash Settlement Averaging Period, Counterparty shall give Dealer notice of the aggregate number of Shares and/or amount of cash included in the
Total Convertible Share Obligation Value (as defined below) for all Exercise Dates (it being understood, for the avoidance of doubt, that the requirement of Counterparty to deliver such notice shall not limit Counterparty’s obligations with
respect to a Notice of Exercise or Notice of Final Convertible Security Settlement Method, as the case may be, as set forth above, in any way).

  

	39 	Insert cross references to sections of the Indenture addressing the election of settlement method 

	40 	Insert cross references to sections of the Indenture defining the delivery obligation 

			
	 Net Convertible Share Obligation Value:
	  	With respect to Relevant Convertible Securities as to a Conversion Date, (i) the Total Convertible Share Obligation Value of such Relevant Convertible Securities for such Conversion Date minus (ii) the aggregate
principal amount of such Relevant Convertible Securities for such Conversion Date.
		
	 Total Convertible Share Obligation Value:
	  	With respect to Relevant Convertible Securities with respect to a Conversion Date, (i) (A) the number of Shares equal to the aggregate number of Shares that Counterparty is obligated to deliver to the holder(s) of Relevant
Convertible Securities for such Conversion Date pursuant to the Indenture multiplied by (B) the Share Obligation Value Price plus (ii) an amount of cash equal to the aggregate amount of cash that Counterparty is obligated to
deliver to the holder(s) of Relevant Convertible Securities for such Conversion Date pursuant to the Indenture (including, for the avoidance of doubt, any cash payable by Counterparty in lieu of fractional Shares); provided that the Total
Convertible Share Obligation Value shall be determined excluding any Shares and/or cash that Counterparty is obligated to deliver to holder(s) of the Relevant Convertible Securities as a direct or indirect result of any adjustments to the Conversion
Rate pursuant to a Discretionary Adjustment and any interest payment that Counterparty is (or would have been) obligated to deliver to holder(s) of the Relevant Convertible Securities for such Conversion Date.
		
	 Share Obligation Value Price:
	  	The opening price as displayed under the heading “Op” on Bloomberg page “ZEN.N <Equity>” (or its equivalent successor if such page is not available) on the applicable Settlement Date or other date of
delivery.
		
	 Other Applicable Provisions:
	  	To the extent Dealer is obligated to deliver Shares hereunder, the provisions of Sections 9.8, 9.9 and 9.11 of the Equity Definitions will be applicable as if “Physical Settlement” applied to the Transaction;
provided that the Representation and Agreement contained in Section 9.11 of the Equity Definitions shall be modified by excluding any representations therein relating to restrictions, obligations, limitations or requirements under
applicable securities laws that exist as a result of the fact that Counterparty is the issuer of the Shares.
		
	 Restricted Certificated Shares:
	  	Notwithstanding anything to the contrary in the Equity Definitions, Dealer may, in whole or in part, deliver Shares required to be delivered to Counterparty hereunder in certificated form in lieu of delivery through the Clearance
System. With respect to such certificated Shares, the Representation and Agreement contained in Section 9.11 of the Equity Definitions shall be modified by deleting the remainder of the provision after the word “encumbrance” in the
fourth line thereof.
		
	Adjustments:	  	
		
	 Method of Adjustment:
	  	Notwithstanding Section 11.2 of the Equity Definitions, upon the occurrence of any event or condition set forth in the Dilution Adjustment Provisions (a “Potential Adjustment Event”) that requires an
adjustment under the Indenture, the Calculation Agent shall, in good faith and in a commercially reasonable manner, make a corresponding adjustment in respect of any one or more of the Strike Price, the Number of Options, the Option Entitlement and
any other term relevant to the exercise, settlement or payment of the Transaction, to the extent an analogous adjustment is required under the Indenture, subject to “Discretionary Adjustments” below. Immediately upon the occurrence of any
Potential Adjustment Event, Counterparty shall notify the Calculation Agent of such Potential Adjustment Event.

			
		
		  	Notwithstanding anything to the contrary herein or in the Equity Definitions:
		
		  	 (i) in connection with any Potential Adjustment Event as a result of an event or condition set forth in
Section 14.04(b)41 of the Indenture or Section 14.04(c)42 of the Indenture where, in either case, the period for determining
“Y” (as such term is used in Section 14.04(b)43 of the Indenture) or “SP0” (as such term is used in
Section 14.04(c)44 of the Indenture), as the case may be, begins before Counterparty has publicly announced the event or condition giving rise to such Potential Adjustment Event, then the
Calculation Agent shall, in good faith and in a commercially reasonable manner, have the right to adjust any variable relevant to the exercise, settlement or payment for the Transaction as appropriate to reflect the reasonable costs (including, but
not limited to, hedging mismatches and market losses) and commercially reasonable out-of-pocket expenses incurred by Dealer in connection with its commercially
reasonable hedging activities as a result of such event or condition not having been publicly announced prior to the beginning of such period; and

		
		  	 (ii) if any Potential Adjustment Event is declared and (a) the event or condition giving rise to such Potential
Adjustment Event is subsequently amended, modified, cancelled or abandoned, (b) the “Conversion Rate” (as defined in the Indenture) is otherwise not adjusted at the time or in the manner contemplated by the relevant Dilution
Adjustment Provision based on such declaration or (c) the “Conversion Rate” (as defined in the Indenture) is adjusted as a result of such Potential Adjustment Event and subsequently re-adjusted
(each of clauses (a), (b) and (c), a “Potential Adjustment Event Change”) then, in each case, the Calculation Agent shall, in good faith and in a commercially reasonable manner, have the right to adjust any variable relevant to the
exercise, settlement or payment for the Transaction as appropriate to reflect the reasonable costs (including, but not limited to, hedging mismatches and market losses) and commercially reasonable out-of-pocket expenses incurred by Dealer in connection with its commercially reasonable hedging activities as a result of such Potential Adjustment Event Change.

  

	41 	Include cross reference to section of the Indenture providing for an adjustment to the Conversion Rate in connection with a below market rights, options or warrants offering 

	42 	Include cross reference to section of the Indenture providing for an adjustment to the Conversion Rate in connection with the distributions of Distributed Property 

	43 	Include cross reference to section of the Indenture providing for an adjustment to the Conversion Rate in connection with a below market rights, options or warrants offering 

	44 	Include cross reference to section of the Indenture providing for an adjustment to the Conversion Rate in connection with the distributions of Distributed Property 

			
		  	 Upon the occurrence of any Potential Adjustment Event Change, Counterparty shall immediately notify the Calculation
Agent in writing of the details of such Potential Adjustment Event Change.

		
		  	For the avoidance of doubt, Dealer shall not have any payment or delivery obligation hereunder in respect of, and no adjustment shall be made to the terms of the Transaction on account of, (x) any distribution of cash,
property or securities by Counterparty to the holders of Convertible Securities (upon conversion or otherwise) or (y) any other transaction in which holders of Convertible Securities are entitled to participate, in each case, in lieu of an
adjustment under the Indenture in respect of a Potential Adjustment Event (including, without limitation, under the fifth sentence of Section 14.04(c) of the Indenture or the fourth sentence of Section 14.04(d) of the Indenture).45
		
	 Dilution Adjustment Provisions:
	  	Sections 14.04(a), (b), (c), (d) and (e) 46 and Section 14.0547 of the Indenture
		
	 Discretionary Adjustments:
	  	Notwithstanding anything to the contrary herein or in the Equity Definitions, if the Calculation Agent in good faith disagrees with any adjustment under the Indenture that is the basis of any adjustment hereunder and that
involves an exercise of discretion by Counterparty, its board of directors or a committee of its board of directors (including, without limitation, pursuant to Section 14.0548 of the
Indenture or pursuant to Section 14.0749 of the Indenture or any supplemental indenture entered into thereunder or in connection with the determination of the fair value of any securities,
property, rights or other assets), then the Calculation Agent will determine the corresponding adjustment to be made to any one or more of the Strike Price, Number of Options, Option Entitlement and any other variable relevant to the exercise,
settlement or payment of or under the Transaction in good faith and in a commercially reasonable manner consistent with the methodology set forth in the Indenture. In addition, notwithstanding the foregoing, if any Potential Adjustment Event occurs
during the Cash Settlement Averaging Period but no adjustment was made to any Convertible Security under the Indenture because the relevant holder of such Convertible Security was deemed to be a record owner of the underlying Shares on the related
Conversion Date, then the Calculation Agent shall, in good faith and in a commercially reasonable manner, make an adjustment, consistent with the methodology set forth in the Indenture as determined by it, to the terms hereof in order to account for
such Potential Adjustment Event. For the avoidance of doubt, the Delivery Obligation shall be calculated on the basis of such adjustments by the Calculation Agent.

  

	45 	Include references to provisions of the Indenture providing for pass through of cash or distributed property in lieu of conversion rate adjustments. 

	46 	Include cross references to specific paragraphs of the section of the Indenture containing anti-dilution adjustments to the Conversion Rate 

	47 	Include cross reference to specific paragraph of the section of the Indenture providing for adjustments where a Conversion Rate adjustment occurs during a period over which VWAP, conversion value, settlement amount or
closing price is calculated 

	48 	Include reference to provision of Indenture providing for adjustments by board of directors in the case of adjustment events that occur during an averaging period 

	49 	Include reference to Merger Event provision 

			
	 Extraordinary Events:
  

Merger Events:
	  	Notwithstanding Section 12.1(b) of the Equity Definitions, “Merger Event” shall have the meaning set forth in Section 14.0750 of the Indenture.
		
	 Consequences of Merger Events/Tender Offers:
	  	Notwithstanding Section 12.2 of the Equity Definitions, upon the occurrence of a Merger Event, the Calculation Agent, acting in good faith and commercially reasonably, shall make a corresponding adjustment in respect of any
adjustment under the Indenture to any one or more of the nature of the Shares, the Number of Options, the Option Entitlement, composition of the “Shares” hereunder and any other variable relevant to the exercise, settlement or payment for
the Transaction, to the extent an analogous adjustment is required under Section 14.0751 of the Indenture in respect of such Merger Event, as determined in good faith and in a commercially
reasonable manner by the Calculation Agent by reference to such Section, subject to “Discretionary Adjustments” above; provided that such adjustment shall be made without regard to any adjustment to the Conversion Rate pursuant to a
Make-Whole Fundamental Change Adjustment or a Discretionary Adjustment; provided further that in respect of any election by the holders of Shares with respect to the consideration due upon consummation of any Merger Event, the Calculation
Agent shall have the right to adjust any variable relevant to the exercise, settlement or payment for the Transaction as appropriate to compensate Dealer for any losses (including, without limitation, market losses customary for transactions similar
to the Transaction with counterparties similar to Counterparty) solely as a result of any mismatch on its Hedge Position, assuming Dealer maintains a commercially reasonable Hedge Position, and the type and amount of consideration actually paid or
issued to the holders of Shares in respect of such Merger Event; and provided further that if, with respect to a Merger Event or a Tender Offer, (i) the consideration for the Shares includes (or, at the option of a holder of Shares, may
include) securities issued by an entity that is not a corporation organized under the laws of the United States, any state thereof or the District of Columbia or (ii) the Counterparty to the Transaction, following such Merger Event, will not be
a corporation organized under the laws of the United States, any State thereof or the District of Columbia or will not be the Issuer, Dealer may elect in its commercially reasonable discretion that Cancellation and Payment (Calculation Agent
Determination) shall apply. For the avoidance of doubt, adjustments shall be made pursuant to the provisions set forth above regardless of whether any Merger Event gives rise to an Early Conversion. For purposes of this paragraph, “Tender
Offer” means the occurrence of any event or condition set forth in Section 14.04(e)52 of the Indenture.

  

	50 	Include cross reference to sections of the Indenture setting forth the list of merger and similar events 

	51 	Include cross reference to sections of the Indenture setting forth the list of merger and similar events 

	52 	Include cross reference to sections of the Indenture describing the consequences of above market tender offers 

			
	 Notice of Merger Consideration:
	  	Upon the occurrence of a Merger Event, Counterparty shall reasonably promptly (but in any event prior to consummation of such Merger Event) notify the Calculation Agent of, in the case 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), the weighted average of the types and amounts of consideration actually received by holders of Shares
upon consummation of such Merger Event.
		
	 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 in a commercially reasonable manner, determine whether the relevant Announcement Event has had an economic effect on the Transaction (the terms of which include, among other terms, the Strike Price and Cap
Price), and, if so, shall adjust the Cap Price accordingly 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. An Announcement Event shall be an “Extraordinary
Event” for purposes of the Equity Definitions, to which Article 12 of the Equity Definitions is applicable.

			
	 Announcement Event:
	  	(i) The public announcement by Issuer, any subsidiary of Issuer, any affiliate of Issuer, any agent of Issuer or a relevant and credible third entity of (x) any transaction or event that, if completed, would constitute a Merger
Event or Tender Offer, (y) any potential acquisition by Issuer and/or its subsidiaries where the aggregate consideration exceeds 25% of the market capitalization of Issuer as of the date of such announcement (a “Transformative
Transaction”) or (z) the intention to enter into a Merger Event or Tender Offer or a Transformative Transaction, (ii) the public announcement by Issuer of an intention to solicit or enter into, or to explore strategic alternatives
or other similar undertaking that may include, a Merger Event or Tender Offer or a Transformative Transaction or (iii) any subsequent public announcement by Issuer, any subsidiary of Issuer, any affiliate of Issuer, any agent of Issuer or a
relevant and credible third entity of a change to a transaction or intention that is the subject of an announcement of the type described in clause (i) or (ii) 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), as determined by the Calculation Agent. The parties hereto agree and
acknowledge that for purposes of this “Announcement Event” definition, in determining whether a third party is relevant and credible, 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 (and, for the avoidance of doubt, if the Calculation Agent determines the effect thereof on the Shares and/or options relating to the Shares is material, such third party shall be deemed to
be relevant and credible). 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. For purposes of this definition of “Announcement Event,” (A) “Merger Event” shall mean such term as defined under Section 12.1(b) of the Equity Definitions (but, for the avoidance of doubt, the remainder of the
definition of “Merger Event” in Section 12.1(b) of the Equity Definitions following the definition of “Reverse Merger” therein shall be disregarded) and (B) “Tender Offer” shall mean such term as defined under
Section 12.1(d) of the Equity Definitions.
		
	 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.

			
	Additional Termination Event(s):	  	Notwithstanding anything to the contrary in the Equity Definitions, if, as a result of an Extraordinary Event, the Transaction would be cancelled or terminated (whether in whole or in part) pursuant to Article 12 of the Equity
Definitions, an Additional Termination Event (with the Transaction (or the cancelled or terminated portion thereof) being the Affected Transaction and Counterparty being the sole Affected Party) shall be deemed to occur, and, in lieu of Sections
12.7, 12.8 and 12.9 of the Equity Definitions, Section 6 of the Agreement shall apply to such Affected Transaction.
	Additional Disruption Events:	  	
		
	 (a) Change in Law:
	  	Applicable; provided that Section 12.9(a)(ii) of the Equity Definitions is hereby amended by (i) 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) by immediately following the word
“Transaction” in clause (X) thereof, 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 (i) 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)” and (ii) adding the words “, or holding, acquiring or disposing of Shares or any Hedge Positions relating to,” after the words “obligations
under” in clause (Y) thereof.
		
	 (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:	  	Dealer; provided that the Determining Party will promptly, upon written notice from Counterparty, provide a statement displaying in reasonable detail the basis for such determination, adjustment or calculation, as the case
may be (including any quotations, market data or information from internal or external sources used in making such determination, adjustment or calculation, it being understood that the Determining Party shall not be required to disclose any
confidential information or proprietary models used by it in connection with such determination, adjustment or calculation, as the case may be).
		
	Non-Reliance:	  	Applicable
	Agreements and Acknowledgments	  	
		
	Regarding Hedging Activities:	  	Applicable
		
	Additional Acknowledgments:	  	Applicable
		
	Hedging Adjustment:	  	For the avoidance of doubt, whenever Dealer, Determining Party or the Calculation Agent is permitted to make an adjustment pursuant to the terms of this Confirmation or the Equity Definitions to take into account the effect of any
event (other than an adjustment made by reference to the Indenture), the Calculation Agent, Determining Party or Dealer, as the case may be, shall make such adjustment by reference to the effect of such event on Dealer assuming that Dealer maintains
a commercially reasonable hedge position.
		
	3. Calculation Agent:	  	Dealer; provided that all calculations and determinations by the Calculation Agent (other than calculations or determinations made by reference to the Indenture) shall be made in good faith and in a commercially reasonable
manner and assuming for such purposes that Dealer is maintaining, establishing and/or unwinding, as applicable, a commercially reasonable hedge position; provided further that if 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 occurs, Counterparty shall have the right to appoint a successor calculation agent which shall be a nationally recognized third-party dealer in over-the-counter corporate equity derivatives. Calculation Agent agrees that it will promptly, upon written notice from Counterparty, provide a statement displaying in
reasonable detail the basis for such determination, adjustment or calculation, as the case may be (including any quotations, market data or information from internal or external sources used in making such determination, adjustment or calculation,
it being understood that the Calculation Agent shall not be required to disclose any confidential information or proprietary models used by it in connection with such determination, adjustment or calculation, as the case may be).
	4. Account Details:	  	
	 Dealer Payment Instructions:
	  	
	 [Dealer Accounts]
	  	
	 Counterparty Payment Instructions:
	  	
	 To be provided by Counterparty.
	  	

 5. Offices: 

The Office of Dealer for the Transaction is: [•] 

The Office of Counterparty for the Transaction is: 

Inapplicable, Counterparty is not a Multibranch Party 

6. Notices: For purposes of this Confirmation: 
  

	(a)	Address for notices or communications to Counterparty: 

  

			
	 To:
	 	 Zendesk, Inc.
 1019 Market Street

San Francisco, California 94103

	 Attn:
	 	Elena Gomez
	 Telephone:
	 	(415) 418-7506
	 Email:
	 	elena@zendesk.com

 with a copy to: 
  

			
	 Goodwin Procter LLP

	 The New York Times Building

	 620 Eighth Avenue

	 New York, NY 10018

	 Attn:
	 	Yoel Kranz
	 Telephone:
	 	(212) 813-8800
	 Email:
	 	ykranz@goodwinlaw.com

 (b) Address for notices or communications to Dealer: 

[Dealer Address] 
 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) Counterparty is not aware of any material nonpublic 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
Securities Exchange Act of 1934, as amended (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) (A) On the Trade Date, the Shares or securities that are convertible into, or exchangeable or exercisable
for Shares, are not subject to a “restricted period,” as such term is defined in Regulation M under the Exchange Act (“Regulation M”) and (B) Counterparty shall not engage in any “distribution,” as such term
is defined in Regulation M, other than a distribution meeting the requirements of the exceptions set forth in sections 101(b)(10) and 102(b)(7) of Regulation M, , until the second Exchange Business Day immediately following the Trade Date. 

(iii) 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). 
 (iv) 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. 

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

 (vi) 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 raise or depress or otherwise manipulate the price of the Shares (or any security convertible into or exchangeable for Shares) or otherwise
in violation of the Exchange Act. 
 (vii) 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. 

(viii) 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. 
 (ix) The representations and warranties of Counterparty set forth in
Section 3 of the Agreement and Section 1 of the Purchase Agreement, dated as of March [ ], 2018, between Counterparty and [•] as representatives of the initial purchasers party thereto (the “Purchase Agreement”) are
true and correct as of the Trade Date and the Effective Date and are hereby deemed to be repeated to Dealer as if set forth herein. 

(x) To the knowledge of Counterparty, no state or local (including non-U.S.
jurisdictions) 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 Counterparty makes no representation or warranty regarding any such requirement that is applicable generally to the ownership of equity
securities by Dealer or any of its affiliates solely as a result of it or any of such affiliates being financial institutions or broker-dealers. 

(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; and (C) has total assets of at least USD50 million. 
 (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 of 1933, as amended (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” and “financial
participant” within the meaning of Sections 101(22) and 101(22A) of the Bankruptcy Code. The parties hereto further agree and acknowledge (A) that this Confirmation is 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 (B) that Dealer is entitled to the protections afforded by, among other sections,
Sections 362(b)(6), 362(b)(27), 362(o), 546(e), 546(j), 548(d)(2), 555 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 Premium Payment Date and reasonably acceptable to Dealer in form and substance, with respect to the matters set forth in Section 3(a)
of the Agreement and Section 7(a)(vii) hereof; provided that any such opinion of counsel may contain customary exceptions and qualifications, including, without limitation, exceptions and qualifications relating to indemnification
provisions. 

 (f) Counterparty understands that notwithstanding any other relationship between Counterparty and
Dealer and its affiliates, in connection with this 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) 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”. 

(h) 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, in each case, to the extent such rules are applicable to such party. 

8. Other Provisions: 
 (a)
Right to Extend. Dealer may postpone or add, in whole or in part, any Exercise Date or Settlement Date or any other date of valuation, payment or delivery by Dealer, with respect to some or all of the relevant Options (in which event the
Calculation Agent, in good faith and in a commercially reasonable manner, shall make appropriate adjustments to the Delivery Obligation), if Dealer determines, in good faith and in a commercially reasonable manner, and, in respect of clause
(ii) below, based on the advice of counsel, that such extension is reasonably necessary or appropriate (i) to preserve Dealer’s commercially reasonable hedging or hedge unwind activity hereunder in light of existing liquidity
conditions in the cash market, the stock borrow market or other relevant market (but only if there is a material decrease in liquidity relative to Dealer’s expectations on the Trade Date), or (ii) to enable Dealer to effect purchases or
sales of Shares or Share Termination Delivery Units in connection with its commercially reasonable hedging, hedge unwind or settlement activity hereunder in a manner that would (assuming, in the case of purchases, Dealer were Counterparty or an
affiliated purchaser of Counterparty) be in compliance with applicable legal, regulatory or self-regulatory requirements, or with related policies and procedures (whether or not such requirements, policies or procedures are imposed by law or have
been voluntarily adopted by Dealer and, in the case of policies or procedures, so long as such policies or procedures are consistently applied to transactions similar to the Transaction); provided that no such Exercise Day,
Settlement Date or other date of valuation, payment or delivery may be postponed or added more than 40 Trading Days after the original Exercise Day, Settlement Date or other date of valuation, payment or delivery, as the case may be. 

(b) Additional Termination Events. 

(i) The occurrence of an event of default with respect to Counterparty under the terms of the Convertible Securities as set
forth in Section 6.0153 of the Indenture, which default has resulted in the Convertible Securities becoming due and payable under the terms thereof, shall constitute an Additional Termination
Event with respect to which the Transaction is the sole Affected Transaction and Counterparty is the sole Affected Party, and Dealer shall be 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. 
  

	53 	Insert cross reference to section of the Indenture setting forth Events of Default 

 (ii) As promptly as practicable (but in any event within five Scheduled Trading
Days) following any Repurchase Event (as defined below), Counterparty may notify Dealer in writing of such Repurchase Event and the number of Convertible Securities subject to such Repurchase Event (any such notice, a “Convertible Securities
Repurchase Notice”) [; provided that any “Convertible Securities Repurchase Notice” delivered to Dealer pursuant to the Base Call Option Transaction Confirmation shall be deemed to be a Convertible Securities Repurchase
Notice pursuant to this Confirmation and the terms of such Convertible Securities Repurchase Notice shall apply, mutatis mutandis, to this Confirmation]54. Notwithstanding anything to the
contrary in this Confirmation, the receipt by Dealer from Counterparty of (x) any Convertible Securities Repurchase Notice, and (y) a written representation and warranty by Counterparty that, as of the date of such Convertible Securities
Repurchase Notice, Counterparty is not in possession of any material nonpublic information regarding Counterparty or the Shares, within the applicable time period set forth in the preceding sentence, shall constitute an Additional Termination Event
as provided in this Section 8(b)(ii). Upon receipt of any such Convertible Securities Repurchase Notice and the related written representation and warranty, Dealer shall promptly designate an Exchange Business Day following receipt of such
Convertible Securities Repurchase Notice (which in no event shall be earlier than the related repurchase date for such Convertible Securities) 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 such Convertible Securities specified in such Convertible Securities Repurchase Notice [minus the number of Repurchase Options (as defined in the Base
Call Option Transaction Confirmation), if any, that relate to such Convertible Securities (and for purposes of determining whether any Options under this Confirmation or under the Base Call Option Transaction Confirmation will be among the
Repurchase Options hereunder or under, and as defined in, the Base Call Option Transaction Confirmation, the Convertible Securities specified in such Convertible Securities Repurchase Notice shall be allocated first to the Base Call Option
Transaction Confirmation until all Options thereunder are exercised or terminated)]55 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. “Repurchase Event” means that (i) any Convertible Securities are repurchased (whether pursuant to Section 15.0256 of the Indenture or otherwise) by Counterparty or any of its subsidiaries (including in connection with, or as a result of, a Fundamental Change (as defined in the Indenture), a tender offer,
exchange offer or similar transaction or for any other reason), (ii) any Convertible Securities are delivered to Counterparty in exchange for delivery of any property or assets of Counterparty or any of its subsidiaries (howsoever described), (iii)
any principal of any of the Convertible Securities is repaid prior to the final maturity date of the Convertible Securities, or (iv) any Convertible Securities are exchanged by or for the benefit of the “Holders” (as such term is
defined in the Indenture) thereof for any other securities of Counterparty or any of its affiliates (or any other property, or any combination thereof) pursuant to any exchange offer or similar transaction. For the avoidance of doubt, any conversion
of Convertible Securities (whether into cash, Shares, “Reference Property” (as defined in the Indenture) or any combination thereof) pursuant to the terms of the Indenture shall not constitute a Repurchase Event. 

(iii) Notwithstanding anything to the contrary in this Confirmation, upon any Early Conversion in respect of which the relevant
converting Holder has satisfied the requirements to conversion set forth in Section 14.02(b)57 of the Indenture: 
  

	 	(A)	Counterparty shall, as promptly as practicable (but in any event within five Scheduled Trading Days of the “Conversion Date” (as defined in the Indenture) for such Early Conversion), provide written notice (an
“Early Conversion Notice”) to Dealer specifying the number of Convertible Securities surrendered for conversion on such Conversion Date (such Convertible Securities, the “Affected Convertible Securities”), and the
giving of such Early Conversion Notice shall constitute an Additional Termination Event as provided in this Section 8(b)(iii); provided that any such Early Conversion Notice shall contain a written acknowledgement by Counterparty of its
responsibilities under applicable securities laws, and in particular Section 9 and Section 10(b) of the Exchange Act and the rules and regulations thereunder, in respect of the delivery of such Early Conversion Notice. 

 

	 	(B)	upon receipt of any such Early Conversion Notice, within a commercially reasonable period of time thereafter, Dealer shall designate an Exchange Business Day as an Early Termination Date (which Exchange Business Day
shall be on or as promptly as reasonably practicable after the related settlement date for such Affected Convertible Securities) with respect to the portion of the Transaction corresponding to a number of Options (the “Affected Number of
Options”) equal to the lesser of (x) the number of Affected Convertible Securities [minus the “Affected Number of Options” (as defined in the Base Call Option Transaction Confirmation), if any, that relate to such
Affected Convertible Securities]58 and (y) the Number of Options as of the “Conversion Date” (as defined in the Indenture) for such Early Conversion; 

	 	(C)	any payment hereunder with respect to such termination shall be calculated pursuant to Section 6 of the Agreement as if (x) an Early Termination Date had been designated in respect of a Transaction having
terms identical to the Transaction and a Number of Options equal to the Affected Number of Options, (y) Counterparty were the sole Affected Party with respect to such Additional Termination Event and (z) the terminated portion of the
Transaction were the sole Affected Transaction; provided that the amount payable with respect to such termination shall not be greater than (1) the Applicable Percentage, multiplied by (2) the Affected Number of Options,
multiplied by (3) (x) the sum of (i) the amount of cash paid (if any) and (ii) the number of Shares delivered (if any) to the Holder (as such term is defined in the Indenture) of an Affected Convertible Security upon conversion of
such Affected Convertible Security (in each case, including any cash and/or Shares payable and/or deliverable as the result of a Make-Whole Fundamental Change Adjustment (if any)), multiplied by the fair market value of one Share as
determined by the Calculation Agent in good faith and in a commercially reasonable manner, minus (y) USD 1,000; 

  

	 	(D)	for the avoidance of doubt, in determining the amount payable in respect of such Affected Transaction pursuant to Section 6 of the Agreement, the Calculation Agent shall assume that (x) the relevant Early
Conversion and any conversions, adjustments, agreements, payments, deliveries or acquisitions by or on behalf of Counterparty leading thereto had not occurred, (y) no adjustment to the conversion rate for the Convertible Securities has occurred
pursuant to any Make-Whole Fundamental Change Adjustment or Discretionary Adjustment and (z) the corresponding Convertible Securities remain outstanding; and 

 

	 	(E)	the Transaction shall remain in full force and effect, except that, as of the “Conversion Date” (as defined in the Indenture) for such Early Conversion, the Number of Options shall be reduced by the Affected
Number of Options. 

 (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 other than an Event of Default of the type described in
Section 5(a)(iii), (v), (vi), (vii) or (viii) of the Agreement or a Termination Event of the type described in Section 5(b) of the Agreement, in each case that resulted from an event or events outside Counterparty’s control), and
if Dealer would owe any amount to Counterparty pursuant to Section 6(d)(ii) and 6(e) of the Agreement (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 6(d)(ii) and 6(e) of the Agreement, as the case may be, shall
apply. 
  

			
	Share Termination Alternative:	  	If applicable, means that Dealer shall deliver to Counterparty the Share Termination Delivery Property on the date on which the Payment Obligation would otherwise be due pursuant to Section 6(d)(ii) of the Agreement or such
later date or dates as Dealer may commercially reasonably determine (the “Share Termination Payment Date”) taking into account commercially reasonable hedging or hedge unwind activity, in satisfaction of the Payment
Obligation.

  

	54 	Include for additional capped call. 

	55 	Include for additional capped call 

	56 	Insert cross-reference to section of the Indenture relating to fundamental change repurchase. 

	57 	Insert cross reference to section of the Indenture setting forth requirements for conversion 

	58	Include for additional capped call. 

			
	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 the aggregate amount 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 on the date such Share Termination Delivery Units are to be delivered as Share Termination Delivery Property, as determined by the Calculation Agent in a
commercially reasonable manner and notified by the Calculation Agent to Dealer at the time of notification of the Payment Obligation.
		
	Share Termination Delivery Unit:	  	In the case of a Termination Event (other than on account of an Insolvency, Nationalization or Merger Event), Event of Default, Delisting or Additional Disruption Event, one Share or, in the case of an Insolvency, Nationalization or
Merger Event, one Share or a unit consisting of the number or amount of each type of 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 Insolvency, Nationalization or Merger Event, as applicable. If such Insolvency, Nationalization or Merger Event involves a choice of consideration to be received by holders, such holder shall be deemed to have elected to receive
the maximum possible amount of cash.
		
	Failure to Deliver:	  	Applicable
		
	Other Applicable Provisions:	  	If Share Termination Alternative is applicable, the provisions of Sections 9.8, 9.9 and 9.11 of the Equity Definitions will be applicable as if “Physical Settlement” applied to the Transaction, except that all references
to “Shares” shall be read as references to “Share Termination Delivery Units”; provided that the Representation and Agreement contained in Section 9.11 of the Equity Definitions shall be modified by excluding any
representations therein relating to restrictions, obligations, limitations or requirements under applicable securities laws as a result of the fact that Counterparty is the issuer of any Share Termination Delivery Units (or any part
thereof).

 (d) Disposition of Hedge Shares. Counterparty hereby agrees that if, in the good faith
reasonable judgment of Dealer, based on the advice of counsel, the Shares (the “Hedge Shares”) acquired by Dealer for the purpose of hedging its obligations pursuant to the Transaction in a commercially reasonable manner 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, 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, (B) provide accountant’s “comfort” letters in customary form for registered offerings of equity securities, (C) provide disclosure opinions of nationally recognized outside counsel to Counterparty
reasonably acceptable to Dealer, (D) provide other customary opinions, certificates and closing documents customary in form for registered offerings of equity securities 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 (in all cases of (A)-(E) above, as would be usual and customary for offerings for companies of similar size and industry);
provided that if Counterparty elects clause (i) above but the items referred to therein are not completed in a timely manner, or if Dealer, in its sole 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
similar size and industry, in form and substance commercially reasonably satisfactory to Dealer, including using reasonable 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), and best efforts obligations to provide opinions and certificates and such other documentation as is customary for private placements
agreements for transactions of similar size and type, as is commercially 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,
commercially reasonable judgment, to compensate Dealer for any commercially reasonable 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 then-current market price on such Exchange Business Days, and in the amounts and at such time(s), commercially reasonably requested by Dealer. This Section 8(d) shall survive the termination, expiration or early unwind of the
Transaction. 
 (e) Repurchase and Conversion Rate Adjustment Notices. Counterparty shall, at least two Exchange Business Days prior
to any day on which Counterparty effects any repurchase of Shares or consummates or otherwise engages in any transaction or event (a “Conversion Rate Adjustment Event”) that could reasonably be expected to lead to an increase in the
“Conversion Rate” (as defined in the Indenture), give Dealer a written notice of such repurchase or Conversion Rate Adjustment Event (a “Repurchase Notice”) on such day if, following such repurchase or Conversion Rate
Adjustment Event, the Notice Percentage would reasonably be expected to be (i) greater than [    ]59% 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 plus the number of Shares underlying any other convertible bond hedge transactions or similar call options sold by Dealer to Counterparty 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 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 this 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 state or federal law, regulation or regulatory order, 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 reasonable out-of-pocket expenses (including 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. 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 and shall inure to the benefit of any permitted assignee of Dealer. 

 

	59 	To be 0.5% higher than the number of Shares underlying the capped call (including any additional capped call) of the Dealer with the highest Applicable Percentage. 

 (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 any person, or any person whose obligations would be guaranteed by a person, in either case, with a rating (i) for its long-term, unsecured and
unsubordinated indebtedness at least equivalent to Dealer’s (or its ultimate parent’s) or (ii) that is no lower than A3 from Moody’s Investor Service, Inc. (or its successor) or A- from
Standard and Poor’s Rating Group, Inc. (or its successor); provided further that, at the time of such transfer or assignment either (i) both the Dealer and transferee in any such transfer or assignment are a “dealer in
securities” within the meaning of Section 475(c)(1) of the Code or (ii) the transfer or assignment does not result in a deemed exchange by Counterparty within the meaning of Section 1001 of the Code. 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 Section 203 of the Delaware General Corporation Law 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, but excluding reporting obligations arising
under Section 13 of the Exchange Act) of a Dealer Person under Applicable Restrictions and with respect to which such requirements have not been met or the relevant approval has not been received, or that would have any other adverse effect on
a Dealer Person, under Applicable Restrictions 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”), Dealer,
in its discretion, is unable to effect a transfer or assignment to a third party 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 Trading Day as an Early Termination Date with respect to a portion (the “Terminated Portion”) of the Transaction, such that an Excess Ownership Position would no longer exist following the
resulting partial termination of the Transaction (after taking into account commercially reasonable adjustments to Dealer’s commercially reasonable Hedge Positions from 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 or 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 or any other person subject to aggregation with Dealer for
purposes of the “beneficial ownership” test under Section 13 of the Exchange Act, or any “group” (within the meaning of Section 13 of the Exchange Act) of which Dealer is or may be deemed to be a part beneficially owns
(within the meaning of Section 13 of the Exchange Act), without duplication, on such day (or, to the extent that for any reason the equivalent calculation under Section 16 of the Exchange Act and the rules and regulations thereunder
results in a higher number, such higher number) 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 United States person (as defined
in the Internal Revenue Code of 1986, as amended (the “Code”)); 
 (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 reasonable judgment of Dealer, will not
expose Dealer to material risks under applicable securities laws) and execution of any documentation and delivery of legal opinions with respect to securities laws and other matters by such third party and Counterparty as are requested by, and
reasonably satisfactory to, Dealer; 
 (D) Dealer shall 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 shall 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 reasonable costs and expenses, including
reasonable counsel fees, incurred by Dealer in connection with such transfer or assignment. 
 (g) Staggered Settlement. If upon
advice of counsel with respect to applicable legal and regulatory requirements, including any requirements relating to Dealer’s hedging activities hereunder, Dealer reasonably determines that it would not be practicable or advisable to deliver,
or to acquire Shares to deliver, any or all of the Shares to be delivered by Dealer on any Settlement Date for the Transaction, Dealer may, by notice to Counterparty on or prior to any Settlement Date (a “Nominal Settlement Date”),
elect to deliver the Shares on two or more dates (each, a “Staggered Settlement Date”) as follows: 
 (i) in such notice,
Dealer will specify to Counterparty the related Staggered Settlement Dates (the first of which will be such Nominal Settlement Date and the last of which will be no later than the twentieth (20th) Exchange Business Day following such Nominal
Settlement Date) and the number of Shares that it will deliver on each Staggered Settlement Date; 
 (ii) the aggregate number of Shares
that Dealer will deliver to Counterparty hereunder on all such Staggered Settlement Dates will equal the number of Shares that Dealer would otherwise be required to deliver on such Nominal Settlement Date; and 

(iii) if the Net Share Settlement terms or the Combination Settlement terms set forth above were to apply on the Nominal Settlement Date, then
the Net Share Settlement terms or the Combination Settlement terms, as the case may be, will apply on each Staggered Settlement Date, except that the Shares otherwise deliverable on such Nominal Settlement Date will be allocated among such Staggered
Settlement Dates as specified by Dealer in the notice referred to in clause (i) above. 
 (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 by Counterparty of the [Base Convertible Securities]60[Optional Convertible Securities]61 is not consummated pursuant to the Purchase Agreement for any reason by the close of business in New York on
[                 ], 201862 (or such later date as agreed upon by the parties)
([                ], 2018 or such later date being the “Early Unwind Date”), the Transaction shall automatically terminate (the “Early
Unwind”) on the Early Unwind Date and the Transaction and all of the respective rights and obligations of Dealer and Counterparty hereunder shall be cancelled and terminated. Following such termination and cancellation, 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 either party arising out of, and to be performed in connection with, the Transaction either
prior to or after the Early Unwind Date. Dealer and Counterparty represent and acknowledge to the other that upon an Early Unwind, all obligations with respect to the Transaction shall be deemed fully and finally discharged. 

 

	60 	Include for base capped call. 

	61 	Include for additional capped call. 

	62 	For the base capped call, to be the scheduled closing date for the Base Convertible Securities. For the additional capped call, to be the scheduled closing date for the Additional Convertible Securities.

 (l) Agreements and Acknowledgements Regarding Hedging. Counterparty
understands, acknowledges and agrees that: (A) at any time on and prior to the Expiration Date, Dealer and its affiliates may buy or sell Shares or other securities or buy or sell options or futures contracts or enter into swaps or other
derivative securities in order to adjust its hedge position with respect to the Transaction; (B) Dealer and its affiliates also may be active in the market for Shares other than in connection with hedging activities in relation to the
Transaction; (C) Dealer shall make its own determination as to whether, when or in what manner any hedging or market activities in securities of Issuer shall be conducted and shall do so in a manner that it deems appropriate to hedge its price
and market risk with respect to the “Daily VWAP” (as defined in the Indenture); (D) any market activities of Dealer and its affiliates with respect to Shares may affect the market price and volatility of Shares, as well as the
“Daily VWAP” (as defined in the Indenture), each in a manner that may be adverse to Counterparty; and (E) the Transaction is a derivatives transaction in which it has granted Dealer an option, and Dealer may purchase shares for its
own account at an average price that may be greater than, or less than, the price paid by Counterparty under the terms of the Transaction. 

(m) Wall Street Transparency and Accountability Act. In connection with Section 739 of the Wall Street Transparency and
Accountability Act of 2010 (the “WSTAA”), the parties hereby agree that neither the enactment of the WSTAA (or any statute containing any legal certainty provision similar to Section 739 of the WSTAA) or any regulation under
the WSTAA (or any such statute), nor any requirement under the WSTAA (or any statute containing any legal certainty provision similar to Section 739 of the WSTAA) or an amendment made by the WSTAA (or any such statute), shall limit or otherwise
impair either party’s otherwise applicable rights to terminate, renegotiate, modify, amend or supplement this Confirmation or the Agreement, as applicable, arising from a termination event, force majeure, illegality, increased costs, regulatory
change or similar event under this Confirmation, the Equity Definitions incorporated herein, or the Agreement (including, but not limited to, rights arising from Change in Law, Hedging Disruption, Increased Cost of Hedging or Illegality). 

(n) Governing Law; Exclusive Jurisdiction; Waiver of Jury. 

(i) 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 14 OF ARTICLE 5 OF THE NEW YORK GENERAL OBLIGATIONS LAW). 

(ii) Section 13(b) of the Agreement is deleted in its entirety and replaced by the following: 

“Each party hereby irrevocably and unconditionally submits for itself and its property in any suit, legal action or
proceeding relating to this Confirmation or the Agreement, or for recognition and enforcement of any judgment in respect thereof, (each, “Proceedings”) to the exclusive jurisdiction of the Supreme Court of the State of New York, sitting in
New York County, the courts of the United States of America for the Southern District of New York and appellate courts from any thereof. Nothing in this Confirmation or the Agreement precludes either party from bringing Proceedings in any other
jurisdiction if (A) the courts of the State of New York or the United States of America for the Southern District of New York lack jurisdiction over the parties or the subject matter of the Proceedings or decline to accept the Proceedings on
the grounds of lacking such jurisdiction; (B) the Proceedings are commenced by a party for the purpose of enforcing against the other party’s property, assets or estate any decision or judgment rendered by any court in which Proceedings
may be brought as provided hereunder; (C) the Proceedings are commenced to appeal any such court’s decision or judgment to any higher court with competent appellate jurisdiction over that court’s decisions or judgments if that higher
court is located outside the State of New York or Borough of Manhattan, such as a federal court of appeals or the U.S. Supreme Court; or (D) any suit, action or proceeding has been commenced in another jurisdiction by or against the other party
or against its property, assets or estate and, in order to exercise or protect its rights, interests or remedies under this Confirmation or the Agreement, the party (1) joins, files a claim, or takes any other action, in any such suit, action
or proceeding, or (2) otherwise commences any Proceeding in that other jurisdiction as the result of that other suit, action or proceeding having commenced in that other jurisdiction.” 

 (iii) EACH OF COUNTERPARTY AND DEALER HEREBY IRREVOCABLY WAIVES (ON ITS OWN
BEHALF AND, TO THE EXTENT PERMITTED BY APPLICABLE LAW, ON BEHALF OF ITS STOCKHOLDERS) ALL RIGHT TO TRIAL BY JURY IN ANY ACTION, PROCEEDING OR COUNTERCLAIM (WHETHER BASED ON CONTRACT, TORT OR OTHERWISE) ARISING OUT OF OR RELATING TO THIS CONFIRMATION
OR THE AGREEMENT. 
 (o) Amendment. This Confirmation and the Agreement may not be modified, amended or supplemented, except in a
written instrument signed by Counterparty and Dealer. 
 (p) 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. 
 (q) Tax
Matters. For purposes of Sections 4(a)(i) and (ii) of the Agreement, Counterparty agrees to deliver to Dealer, upon request, one duly executed and completed United States Internal Revenue Service Form
W-9 (or successor thereto). Dealer shall provide to Counterparty one duly executed and completed United States Internal Revenue Service Form
[W-9][W-8BEN]63 (or successor thereto), upon reasonable request of Counterparty. 

(r) Withholding Tax with Respect to Non-US Counterparties. “Indemnifiable Tax”
as defined in Section 14 of the Agreement shall not include (i) any U.S. federal withholding tax imposed or collected pursuant to Sections 1471 through 1474 of the Code, any current or future regulations or official interpretations
thereof, any agreement entered into pursuant to Section 1471(b) of the Code, or any fiscal or regulatory legislation, rules or practices adopted pursuant to any intergovernmental agreement entered into in connection with the implementation of
such Sections of the Code (a “FATCA Withholding Tax”) or (ii) any U.S. federal withholding tax imposed on amounts treated as dividends from sources within the United States under Section 871(m) of the Code (or any Treasury
regulations or other guidance issued thereunder). For the avoidance of doubt, a FATCA Withholding Tax is a Tax the deduction or withholding of which is required by applicable law for the purposes of Section 2(d) of the Agreement. 

(s) Amendment to Equity Definitions. 

(i) Solely in respect of adjustments to the Cap Price pursuant to Section 8(t), Section 11.2(e)(vii) of the Equity
Definitions is hereby amended by deleting the words “that may have a diluting or concentrative effect on the theoretical value of the relevant Shares” and replacing them with the words “that is the result of a corporate event
involving the Issuer or its securities that has, in the commercially reasonable judgment of the Calculation Agent, a material economic effect on the Shares or options on the Shares; provided that such event is not based on (a) an
observable market, other than the market for the Company’s own stock or (b) an observable index, other than an index calculated and measured solely by reference to Company’s own operations.”. 

(ii) Section 12.9(b)(i) of the Equity Definitions is hereby amended by (1) 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”. 

(t) Other Adjustments Pursuant to the Equity Definitions. Notwithstanding anything to the contrary in the Agreement, the Equity
Definitions or this Confirmation, upon the occurrence of a Merger Date, the occurrence of a Tender Offer Date, or declaration by Counterparty of the terms of any Potential Adjustment Event, the Calculation Agent shall determine in good faith and in
a commercially reasonable manner whether such occurrence or declaration, as applicable, has had a material economic effect on the Transaction and, if so, shall, in its good faith and commercially reasonable discretion, adjust the Cap Price to
preserve the fair value of the Options taking into account, for the avoidance of doubt, such economic effect on both the Strike Price and Cap Price (provided that in no event shall the Cap Price be less than the Strike Price; provided
further that any adjustment to the Cap Price made pursuant to this Section 8(t) shall be made without duplication of any other adjustment hereunder). Solely for purposes of this Section 8(t), the terms “Potential Adjustment
Event,” “Merger Event,” and “Tender Offer” shall each have the meanings assigned to each such term in the Equity Definitions (as amended by Section 8(s)(i)). 

 

	63 	Insert as applicable. 

 (u) Notice of Certain Other Events. (A) Counterparty shall give Dealer commercially
reasonable advance (but in no event less than one Exchange Business Day) written notice of the section or sections of the Indenture and, if applicable, the formula therein, pursuant to which any adjustment will be made to the Convertible Securities
in connection with any Potential Adjustment Event, Merger Event or Tender Offer and (B) promptly following any such adjustment, Counterparty shall give Dealer written notice of the details of such adjustment. 

(v) Payment by Counterparty. In the event that, following payment of the Premium, (i) an Early Termination Date occurs or is
designated with respect to the Transaction as a result of a Termination Event or an Event of Default (other than an Event of Default arising under Section 5(a)(ii) or 5(a)(iv) of the Agreement) and, as a result, Counterparty owes to Dealer an
amount calculated under Section 6(e) of the Agreement, or (ii) Counterparty owes to Dealer, pursuant to Section 12.7 or Section 12.9 of the Equity Definitions, an amount calculated under Section 12.8 of the Equity
Definitions, such amount shall be deemed to be zero. 
 (w) Payee Tax Representations. For the purpose of Section 3(f) of the
Agreement, Dealer makes the representations below: 
 (i) [Dealer is organized under the laws of the United States and its U.S. taxpayer
identification number is [        ]. It is “exempt” within the meaning of Treasury Regulation sections 1.6041-3(p) and
1.6049-4(c) from information reporting on IRS Form 1099 and backup withholding.] 
 OR 

(ii) [[Dealer Parent] is a [corporation] established under the laws of [ ] and is classified as a corporation for U.S. federal income tax
purposes. No income received or to be received under this Agreement will be effectively connected with the conduct of a trade or business by [Dealer Parent] in the United States. [Dealer Parent] is a
“non-U.S. branch of a foreign person” as that term is used in Section 1.1441-4(a)(3)(ii) of the Regulations, and it is a “foreign person” as
that term is used in Section 1.6041-4(a)(4) of the Regulations.]64 

 

	64 	Insert as applicable depending on tax status of dealer. 

 Counterparty hereby agrees (a) to check this Confirmation carefully and immediately upon
receipt so that errors or discrepancies can be promptly identified and rectified and (b) to confirm that the foregoing (in the exact form provided by Dealer) correctly sets forth the terms of the agreement between Dealer and Counterparty with
respect to the Transaction, by manually signing this Confirmation or this page hereof as evidence of agreement to such terms and providing the other information requested herein and immediately returning an executed copy to [Dealer]. 

 

					
	Yours faithfully,
	
	[DEALER]
		
	By:	 	 
		 	Name:	 	
		 	Title:	 	

  

					
	Agreed and Accepted By:
	
	ZENDESK, INC. 
		
	By:	 	 
		 	Name:	 	
		 	Title:

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