Exhibit 4.2



 Exhibit 4.2 

EXECUTION VERSION 
  

 
  

EVERBRIDGE, INC. 
 AND 

U.S. BANK NATIONAL ASSOCIATION, 

as Trustee 
 FIRST SUPPLEMENTAL
INDENTURE 
 Dated as of November 20, 2017 

to INDENTURE 
 Dated as of
November 20, 2017 
 1.50% Convertible Senior Notes due 2022 
  

 
  







 TABLE OF CONTENTS 

 
  

 

							
	 	 	 	 	PAGE	 
	ARTICLE 1	 
	DEFINITIONS	 
			
	 Section 1.01.
	 	 Definitions
	 	 	2	 
	 Section 1.02.
	 	 References to Interest
	 	 	12	 
	
	ARTICLE 2	 
	ISSUE, DESCRIPTION, EXECUTION, REGISTRATION AND EXCHANGE OF NOTES	 
			
	 Section 2.01.
	 	 Scope of Supplemental Indenture
	 	 	12	 
	 Section 2.02.
	 	 Designation and Amount
	 	 	12	 
	 Section 2.03.
	 	 Form of Notes
	 	 	12	 
	 Section 2.04.
	 	 Date and Denomination of Notes; Payments of Interest and Defaulted Amounts
	 	 	13	 
	 Section 2.05.
	 	 Exchange and Registration of Transfer of Notes; Depositary
	 	 	15	 
	 Section 2.06.
	 	 Mutilated, Destroyed, Lost or Stolen Notes
	 	 	17	 
	 Section 2.07.
	 	 Cancellation of Notes Paid, Converted, Etc
	 	 	18	 
	 Section 2.08.
	 	 Additional Notes; Repurchases
	 	 	18	 
	 Section 2.09.
	 	 CUSIP Numbers
	 	 	18	 
	
	ARTICLE 3	 
	SATISFACTION AND DISCHARGE	 
			
	 Section 3.01.
	 	 Applicability of Article 11 of the Base Indenture
	 	 	19	 
	 Section 3.02.
	 	 Satisfaction and Discharge
	 	 	19	 
	 Section 3.03.
	 	 Repayment to Company
	 	 	19	 
	
	ARTICLE 4	 
	PARTICULAR COVENANTS OF THE COMPANY	 
			
	 Section 4.01.
	 	 Payment of Principal and Interest
	 	 	20	 
	 Section 4.02.
	 	 Conversion Agent
	 	 	20	 
	 Section 4.03.
	 	 [Reserved]
	 	 	20	 
	 Section 4.04.
	 	 Compliance Certificate; Statements as to Defaults
	 	 	20	 
	 Section 4.05.
	 	 Reports
	 	 	21	 
	 Section 4.06.
	 	 Stay, Extension and Usury Laws
	 	 	21	 
	 Section 4.07.
	 	 Further Instruments and Acts
	 	 	21	 
	 Section 4.08.
	 	 Company to Furnish Trustee Names and Addresses of Securityholders
	 	 	21	 
	 Section 4.09.
	 	 Existence
	 	 	21	 


  
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	ARTICLE 5	 
	DEFAULTS AND REMEDIES	 
			
	 Section 5.01.
	 	 Applicability of Article 6 of the Base Indenture
	  	 	22	 
	 Section 5.02.
	 	 Events of Default
	  	 	22	 
	 Section 5.03.
	 	 Acceleration; Rescission and Annulment
	  	 	23	 
	 Section 5.04.
	 	 Additional Interest
	  	 	24	 
	 Section 5.05.
	 	 Payments of Notes on Default; Suit Therefor
	  	 	25	 
	 Section 5.06.
	 	 Application of Monies Collected by Trustee
	  	 	26	 
	 Section 5.07.
	 	 Proceedings by Holders
	  	 	27	 
	 Section 5.08.
	 	 Proceedings by Trustee
	  	 	28	 
	 Section 5.09.
	 	 Remedies Cumulative and Continuing
	  	 	28	 
	 Section 5.10.
	 	 Direction of Proceedings and Waiver of Defaults by Majority of Holders
	  	 	29	 
	 Section 5.11.
	 	 Notice of Defaults
	  	 	29	 
	 Section 5.12.
	 	 Undertaking to Pay Costs
	  	 	29	 
	
	ARTICLE 6	 
	INTENTIONALLY OMITTED.	 
	
	ARTICLE 7	 
	HOLDERS’ MEETINGS	 
			
	 Section 7.01.
	 	 Purpose of Meetings
	  	 	30	 
	 Section 7.02.
	 	 Call of Meetings by Trustee
	  	 	30	 
	 Section 7.03.
	 	 Call of Meetings by Company or Holders
	  	 	31	 
	 Section 7.04.
	 	 Qualifications for Voting
	  	 	31	 
	 Section 7.05.
	 	 Regulations
	  	 	31	 
	 Section 7.06.
	 	 Voting
	  	 	32	 
	 Section 7.07.
	 	 No Delay of Rights by Meeting
	  	 	32	 
	
	ARTICLE 8	 
	SUPPLEMENTAL INDENTURES	 
			
	 Section 8.01.
	 	 Applicability of Article 9 of the Base Indenture
	  	 	32	 
	 Section 8.02.
	 	 Supplemental Indentures Without Consent of Holders
	  	 	32	 
	 Section 8.03.
	 	 Supplemental Indentures with Consent of Holders
	  	 	33	 
	 Section 8.04.
	 	 Effect of Supplemental Indentures
	  	 	34	 
	 Section 8.05.
	 	 Notation on Notes
	  	 	35	 
	 Section 8.06.
	 	 Evidence of Compliance of Supplemental Indenture to Be Furnished to Trustee
	  	 	35	 
	
	ARTICLE 9	 
	CONVERSION OF NOTES	 
			
	 Section 9.01.
	 	 Conversion Privilege
	  	 	35	 
	 Section 9.02.
	 	 Conversion Procedure; Settlement Upon Conversion
	  	 	38	 


  
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	 Section 9.03.
	 	 Increased Conversion Rate Applicable to Certain Notes Surrendered in Connection with
Make-Whole Fundamental Changes or Notice of Redemption
	  	 	42	 
	 Section 9.04.
	 	 Adjustment of Conversion Rate
	  	 	45	 
	 Section 9.05.
	 	 Adjustments of Prices
	  	 	54	 
	 Section 9.06.
	 	 Shares To Be Fully Paid
	  	 	54	 
	 Section 9.07.
	 	 Effect of Recapitalizations, Reclassifications and Changes of the Common Stock
	  	 	55	 
	 Section 9.08.
	 	 Certain Covenants
	  	 	57	 
	 Section 9.09.
	 	 Responsibility of Trustee
	  	 	57	 
	 Section 9.10.
	 	 Notice to Holders Prior to Certain Actions
	  	 	58	 
	 Section 9.11.
	 	 Stockholder Rights Plans
	  	 	58	 
	 Section 9.12.
	 	 Exchange in Lieu of Conversion
	  	 	58	 
	
	ARTICLE 10	 
	REPURCHASE OF NOTES AT OPTION OF HOLDERS	 
			
	 Section 10.01.
	 	 Repurchase at Option of Holders Upon a Fundamental Change
	  	 	59	 
	 Section 10.02.
	 	 Withdrawal of Fundamental Change Repurchase Notice
	  	 	62	 
	 Section 10.03.
	 	 Deposit of Fundamental Change Repurchase Price
	  	 	62	 
	 Section 10.04.
	 	 Covenant to Comply with Applicable Laws Upon Repurchase of Notes
	  	 	63	 
	
	ARTICLE 11	 
	OPTIONAL REDEMPTION	 
			
	 Section 11.01.
	 	 Applicability of Article 3 of the Base Indenture
	  	 	63	 
	 Section 11.02.
	 	 Optional Redemption
	  	 	64	 
	 Section 11.03.
	 	 Notice of Optional Redemption; Selection of Notes
	  	 	64	 
	 Section 11.04.
	 	 Payment of Notes Called for Redemption
	  	 	65	 
	 Section 11.05.
	 	 Restrictions on Redemption
	  	 	65	 
	
	ARTICLE 12	 
	CONSOLIDATION, MERGER AND SALE OF ASSETS	 
			
	 Section 12.01.
	 	 Applicability of Article 5 of the Base Indenture
	  	 	66	 
	 Section 12.02.
	 	 When Company May Merge, Etc
	  	 	66	 
	 Section 12.03.
	 	 Successor Corporation to Be Substituted
	  	 	66	 
	 Section 12.04.
	 	 Opinion of Counsel to Be Given to Trustee
	  	 	67	 
	
	ARTICLE 13	 
	MISCELLANEOUS PROVISIONS	 
			
	 Section 13.01.
	 	 Governing Law; Jurisdiction
	  	 	67	 
	 Section 13.02.
	 	 Waiver of Jury Trial
	  	 	68	 
	 Section 13.03.
	 	 Legal Holidays
	  	 	68	 
	 Section 13.04.
	 	 No Security Interest Created
	  	 	68	 
	 Section 13.05.
	 	 Benefits of Indenture
	  	 	68	 


  
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	 Section 13.06.
	 	 Table of Contents, Headings, Etc
	  	 	68	 
	 Section 13.07.
	 	 Severability
	  	 	68	 
	 Section 13.08.
	 	 Multiple Originals
	  	 	69	 
	 Section 13.09.
	 	 Calculations
	  	 	69	 
	 Section 13.10.
	 	 Ratification of Base Indenture
	  	 	69	 
	 Section 13.11.
	 	 Delivery of Notices
	  	 	69	 

 EXHIBIT 
  

							
	 Exhibit A
	 	 Form of Note
	  	 	A-1	 


  
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 FIRST SUPPLEMENTAL INDENTURE dated as of November 20, 2017 (this
“Supplemental Indenture”) between Everbridge, Inc., a Delaware corporation, as issuer (the “Company”, as more fully set forth in Section 1.01) and U.S. Bank National Association, a national banking association, as
trustee (the “Trustee”, as more fully set forth in Section 1.01), supplementing the Indenture, dated as of November 20, 2017, between the Company and the Trustee (the “Base Indenture” and the Base Indenture, as
amended and supplemented by this Supplemental Indenture, and as it may be further amended or supplemented from time to time with respect to the Notes, the “Indenture”). 

W I T N E S S E T H: 
 WHEREAS,
the Company executed and delivered the Base Indenture to the Trustee to provide, among other things, for the issuance, from time to time, of the Company’s Securities, in an unlimited amount in one or more series to be established by the Company
under, and authenticated and delivered as provided in, the Base Indenture; 
 WHEREAS, Sections 2.01, 2.02 and 9.01(g) of the Base Indenture
provide that the Company, from time to time, may enter into one or more indentures supplemental to the Base Indenture, without the consent of any Securityholders, to, among other things, establish the form or terms of Securities of any series as
permitted by the Base Indenture, and to provide for the issuance of such Securities, as permitted by the Base Indenture, and to set forth the terms thereof; 

WHEREAS, for its lawful corporate purposes, the Company has duly authorized the issuance of a single series of Securities designated as
its 1.50% Convertible Senior Notes due 2022 (the “Notes” and each $1,000 principal amount thereof, unless the context otherwise requires, a “Note”), initially in an aggregate principal amount not to exceed
$115,000,000, 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 Supplemental Indenture; 

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; 

WHEREAS, the Company confirms that the conditions set forth in the Base Indenture for the execution and delivery of this Supplemental
Indenture have been complied with; 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 in this Supplemental Indenture provided, the valid, binding and legal obligations of the Company, and this Supplemental Indenture a valid agreement according to
its terms, have been done and performed, and the execution of this Supplemental Indenture and the issuance hereunder of the Notes have in all respects been duly authorized. 







 NOW, THEREFORE, THIS SUPPLEMENTAL 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. For all purposes of the Indenture, except as otherwise expressly provided or unless the context
otherwise requires: 
 (a) the terms defined in this Article 1 shall have the respective meanings assigned to them in this Article 1 and
include the plural as well as the singular and, to the extent applicable, supersede the definitions thereof in the Base Indenture; 
 (b)
all words, terms and phrases defined in the Base Indenture (but not otherwise defined herein) shall have the same meanings as in the Base Indenture; and 

(c) the words “herein,” “hereof” and “hereunder” and other words of similar import (i) when used with
regard to any specified Article, Section or sub-division, refer to such Article, Section or sub-division of this Supplemental Indenture and (ii) otherwise, refer to the Indenture as a whole and not to any particular Article, Section or other
subdivision. 
 “Additional Interest” means all amounts, if any, payable pursuant to Section 5.04. 

“Additional Shares” shall have the meaning specified in Section 9.03(a). 

“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 the 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. 

  
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 “Base Indenture” has the meaning specified in the first paragraph of this
Supplemental Indenture. 
 “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 9.01(b)(i). The Company shall initially act as the Bid Solicitation Agent.  

“Business Day” means, with respect to any Note, 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, but shall not include any debt
securities convertible into or exchangeable for any securities otherwise constituting Capital Stock pursuant to this definition. 

“Cash Settlement” shall have the meaning specified in Section 9.02(a). 

“Clause A Distribution” shall have the meaning specified in Section 9.04(c). 

“Clause B Distribution” shall have the meaning specified in Section 9.04(c). 

“Clause C Distribution” shall have the meaning specified in Section 9.04(c). 

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

“Combination Settlement” shall have the meaning specified in Section 9.02(a). 

“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 $0.001 per share, at the date of
this Supplemental Indenture, subject to Section 9.07. 
 “Company” shall have the meaning specified in the
first paragraph of this Supplemental Indenture, and subject to the provisions of Article 12 hereof, shall include its successors and assigns. 

“Company Order” means a written order of the Company, signed by one of its Officers, and delivered to the Trustee.

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

“Conversion Date” shall have the meaning specified in Section 9.02(c). 

“Conversion Obligation” shall have the meaning specified in Section 9.01(a). 

  
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 “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 9.01(a). 
 “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 
 (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 such 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 “EVBG <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 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 Redemption Price, the Fundamental Change Repurchase Price, principal and interest) that are payable but are not punctually paid or duly provided. 

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

  
 4 








 “DTC” means The Depository Trust Company. 

“Effective Date” shall have the meaning specified in Section 9.03(c), except that, as used in Section 9.04 and Section
9.05, “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 (and
for the avoidance of doubt, any alternative trading convention on the applicable exchange or market in respect of shares of the Common Stock under a separate ticker symbol or CUSIP number will not be considered “regular way” for this
purpose). 
 “Event of Default” shall have the meaning specified in Section 5.02, notwithstanding anything to
the contrary in the Base Indenture. 
 “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. For the avoidance of doubt, any alternative trading convention on the applicable exchange or market in respect of shares of the Common Stock under a separate
ticker symbol or CUSIP number will not be considered “regular way” for this purpose. 
 “Exchange
Election” shall have the meaning specified in Section 9.12. 
 “Expiration Date” shall have the
meaning specified in Section 9.04(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. 
 “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. 
 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, files a Schedule TO (or any successor schedule, form
or report) or any schedule, form or report under the Exchange Act that discloses that such person or group has become 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, 

  
 5 








 
unless such beneficial ownership arises solely as a result of a revocable proxy delivered in response to a public proxy or consent solicitation made pursuant to the applicable rules and
regulations under the Exchange Act; provided that no person or group shall be deemed to be the beneficial owner of any securities tendered pursuant to a tender or exchange offer made by or on behalf of such person or group until such tendered
securities are accepted for purchase or exchange under such offer;  
 (b) the consummation of (A) any
recapitalization, reclassification or change of the Common Stock (other than changes resulting from a subdivision or combination or solely 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 or more of the Company’s direct or indirect
Wholly Owned Subsidiaries; provided, however, that a transaction described in clauses (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 stockholders of the Company approve any plan or proposal for the liquidation or dissolution of the Company; or 
 (d) the
Common Stock (or other common stock 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, (i) for purpose of the definition of “Fundamental Change” above, any transaction that constitutes a
Fundamental Change pursuant to both clause (1) and clause (2) of such definition shall be deemed a Fundamental Change solely under clause (2); and (ii) 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 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 the Notes become convertible into such
consideration, excluding cash payments for fractional shares and cash payments made in respect of dissenters’ appraisal rights (subject to the provisions of Section 9.02(a)). 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  

  
 6 








 
Change or a Make-Whole Fundamental Change but for the clause (ii) of the proviso immediately following clause (d) of the definition thereof, following the effective date of such
transaction) references to the Company in this definition shall instead be references to such other entity. 
 “Fundamental
Change Company Notice” shall have the meaning specified in Section 10.01(c). 
 “Fundamental Change
Repurchase Date” shall have the meaning specified in Section 10.01(a). 
 “Fundamental Change Repurchase
Notice” shall have the meaning specified in Section 10.01(b)(i). 
 “Fundamental Change Repurchase
Price” shall have the meaning specified in Section 10.01(a). 
 “Global Note” shall have the meaning
specified in Section 2.05(c). 
 “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” has the meaning specified in the first paragraph of this Supplemental Indenture. 

“Interest Payment Date” means each May 1 and November 1 of each year, beginning on May 1, 2018.

 “Last Reported Sale Price” of the Common Stock 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 is traded. If the Common Stock 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 for the Common Stock 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 is not so quoted, the “Last Reported Sale Price”
shall be the average of the mid-point of the last bid and ask prices for the Common Stock 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. 

“Make-Whole Fundamental Change” means any transaction or event that constitutes a Fundamental Change (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 Company Notice” shall have the meaning specified in Section 9.03(b). 

  
 7 








 “Make-Whole Fundamental Change Period” shall have the meaning specified
in Section 9.03(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 November 1, 2022. 

“Measurement Period” shall have the meaning specified in Section 9.01(b)(i). 

“Merger Event” shall have the meaning specified in Section 9.07(a). 

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

 “Note Custodian” means the Trustee, as custodian for DTC, with respect to the Global Notes, or any successor
entity thereto. 
 “Note Register” means the register maintained by the Security Registrar with respect to
the Notes in accordance with Section 2.05(b) of the Base Indenture. The Note Register shall be the Security Register with respect to the Notes. 

“Notice of Conversion” shall have the meaning specified in Section 9.02(b). 

“Observation Period” with respect to any Note surrendered for conversion means: (i) subject to clause (ii), if
the relevant Conversion Date occurs prior to May 1, 2022, the 40 consecutive Trading Day period beginning on, and including, the second Trading Day immediately succeeding such Conversion Date; (ii) if the relevant Conversion Date
occurs on or after the date of the Company’s issuance of a Redemption Notice with respect to the Notes pursuant to Section 11.03 and prior to the relevant Redemption Date, the 40 consecutive Trading Days beginning on, and including, the 41st
Scheduled Trading Day immediately preceding such Redemption Date; and (iii) subject to clause (ii), if the relevant Conversion Date occurs on or after May 1, 2022, the 40 consecutive Trading Days beginning on, and including, the 41st
Scheduled Trading Day immediately preceding the Maturity Date. 
 “open of business” means 9:00 a.m. (New
York City time). 
 “Optional Redemption” shall have the meaning specified in Section 11.02. 

  
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 “Outstanding” and “outstanding” when used with
references to Notes, shall, subject to the provisions of Section 8.04 of the Base Indenture, mean, as of any particular time, all Notes authenticated and delivered by the Trustee under this Supplemental 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 converted pursuant to Article 9 and required to be cancelled pursuant to Section 2.07; 

  

	 	(e)	Notes redeemed pursuant to Article 11; and 

  

	 	(f)	Notes repurchased by the Company pursuant to the penultimate sentence of Section 2.08. 


“paying agent” means the Company or the Person appointed by the Company in accordance with Section 4.02 of the
Base Indenture. The Trustee has been initially appointed as the paying agent. 
 “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 9.02(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 2.07 of the Base Indenture 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. A Predecessor Note shall be a Predecessor Security with respect to the Notes. 

“Record Date” means, with respect to any dividend, distribution or other transaction or event in which the holders of
the 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 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). 

  
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 “Redemption Date” shall have the meaning specified in Section
11.03(a). 
 “Redemption Notice” shall have the meaning specified in Section 11.03(a). 

“Redemption Price” means, for any Notes to be redeemed pursuant to Section 11.02, 100% of the principal amount of such
Notes, plus accrued and unpaid interest, if any, to, but excluding, the Redemption Date (unless the Redemption Date falls after a Regular Record Date but on or prior to the immediately succeeding Interest Payment Date, in which
case interest accrued to the Interest Payment Date will be paid to Holders of record of such Notes on such Regular Record Date, and the Redemption Price will be equal to 100% of the principal amount of such Notes). 

“Reference Property” shall have the meaning specified in Section 9.07(a). 

“Regular Record Date” and “regular record date” with respect to any Interest Payment Date, means the
April 15 or October 15 (whether or not such day is a Business Day) immediately preceding the applicable May 1 or November 1 Interest Payment Date, respectively. 

“Reporting Obligations” shall have the meaning specified in Section 5.04. 

“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. 

“Settlement Amount” has the meaning specified in Section 9.02(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. 
 “Settlement Notice”
has the meaning specified in Section 9.02(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 provided that, in the case of a Subsidiary that meets the criteria of clause (3) of the definition thereof
but not clause (1) or (2) thereof, such Subsidiary shall not be deemed to be a Significant Subsidiary unless the Subsidiary’s income 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 $10,000,000 (or its foreign currency equivalent). 

“Specified Dollar Amount” means the maximum cash amount per $1,000 principal amount of Notes to be received upon
conversion as specified (or deemed specified) in the Settlement Notice related to any converted Notes. 

“Spin-Off” shall have the meaning specified in Section 9.04(c). 

  
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 “Stock Price” shall have the meaning specified in Section 9.03(c).

 “Successor Company” shall have the meaning specified in Section 12.02. 

“Supplemental Indenture” has the meaning specified in the first paragraph of this Supplemental Indenture. 

“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 NASDAQ Global Market or, if the Common Stock (or such other security) is not then listed on The NASDAQ Global Market, 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 NASDAQ Global Market or, if the Common Stock is not then listed on The NASDAQ Global Market, 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. 

“Trading Price” 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. 

“Trigger Event” shall have the meaning specified in Section 9.04(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 Supplemental 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. 

  
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 “unit of Reference Property” shall have the meaning specified in Section
9.07(a). 
 “Valuation Period” shall have the meaning specified in Section 9.04(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” in the Base Indenture 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 the Indenture shall be deemed to include Additional Interest if, in such context, Additional Interest is, was or would be payable pursuant to Section 5.04. 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. Scope of Supplemental Indenture. This Supplemental Indenture amends and supplements the provisions of the
Base Indenture, to which provisions reference is hereby made. The changes, modifications and supplements to the Base Indenture effected by this Supplemental Indenture shall be applicable only with respect to, and shall only govern the terms of, the
Notes, which may be issued from time to time in accordance herewith, and shall not apply to any other Securities that may be issued under the Base Indenture unless a supplemental indenture with respect to such other Securities specifically
incorporates such changes, modifications and supplements. For all purposes under the Base Indenture, the Notes shall constitute a single series of Securities, and with regard to any matter requiring the consent under the Base Indenture of Holders of
multiple series of Securities voting together as a single class, the consent of Holders of the Notes voting as a separate class shall also be required and the same threshold shall apply. The provisions of this Supplemental Indenture shall supersede,
with respect to the Notes, any conflicting provisions in the Base Indenture. In the case of any conflict between the Indenture and a Note, the provisions of the Indenture shall control and govern to the extent of such conflict. 

Section 2.02. Designation and Amount. The Notes are hereby created and authorized as a single series of Securities under
the Base Indenture. The Notes shall be designated as the “1.50% Convertible Senior Notes due 2022.” The aggregate principal amount of Notes that may be authenticated and delivered under the Indenture is initially limited to $115,000,000,
subject to Section 2.08 and except for Notes authenticated and delivered upon registration or transfer of, or in exchange for, or in lieu of other Notes pursuant to Section 8.05, Section 9.02(d) or Section 10.03(c) hereof or Sections 2.05, 2.06 or
2.07 of the Base Indenture. 
 Section 2.03. 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 


  
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made a part of the Indenture. To the extent applicable, the Company and the Trustee, by their execution and delivery of this Supplemental Indenture, expressly agree to such terms and provisions
and to be bound hereby. 
 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 the Indenture as may be required by the Note 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, 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 the 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 redemptions, 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 Note Custodian, at the direction of the Trustee, in such manner and upon instructions given by the Holder of such Notes in accordance with the Indenture. Payment of principal
(including the Redemption Price and 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 2.04. 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.  
 (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 

  
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office or agency of the Company maintained by the Company for such purposes in the Borough of Manhattan, The City of New York, 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 addresses as they appear 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 such Holder or, upon application by such a Holder to the Security 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 if such Holder has provided the Company, the Trustee, the Security Registrar or the paying agent with the requisite information necessary to make such wire transfer, which application
shall remain in effect until the Holder notifies, in writing, the Security 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 clause (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 (unless the Trustee shall consent to an earlier date). 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 2.04(c). 

  
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 (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. 

Section 2.03 of the Base Indenture shall, with respect to the Notes, be superseded in its entirety by this Section 2.04, and any
reference in the Base Indenture to such Section 2.03 shall, with respect to the Notes, be deemed to refer instead to this Section 2.04. 

Section 2.05. Exchange and Registration of Transfer of Notes; Depositary. (a) No service charge shall be imposed by
the Company, the Trustee, the Security Registrar, any co-Security 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. Section 2.05(c) of the Base Indenture shall, with respect to the Notes, be superseded in its entirety by this Section 2.05(a). 

(b) Notwithstanding anything in the Base Indenture to the contrary, none of the Company, the Trustee or the Security Registrar shall be
required to exchange or register a transfer of (1) any Notes selected for redemption in accordance with Article 11, except the unredeemed portion of any Note being redeemed in part, (2) any Notes surrendered for conversion or, if a portion
of any Note is surrendered for conversion, such portion thereof surrendered for conversion or (3) any Notes, or a portion of any Note, surrendered for repurchase (and not withdrawn) in accordance with Article 10. 

All Notes issued upon any registration of transfer or exchange of Notes in accordance with the Indenture shall be the valid obligations of the
Company, evidencing the same debt, and entitled to the same benefits under the Indenture as the Notes surrendered upon such registration of transfer or exchange. The first sentence of Section 2.05(d) of the Base Indenture shall, with respect to
the Notes, be superseded in its entirety by this Section 2.05(b). 
 (c) So long as the Notes are eligible for book-entry settlement
with the Depositary, unless otherwise required by law, subject to the second paragraph of Section 2.05(d), 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 Note
Custodian) in accordance with the Indenture (including the restrictions on transfer set forth herein) and the Applicable Procedures of the Depositary therefor. 

  
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 (d) The Depositary shall be a clearing agency registered under the Exchange Act. The Company
initially appoints DTC 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. 
 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 Global 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(d) 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, redeemed 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 Note Custodian. At any time prior to such cancellation, if any interest in a Global Note is exchanged for
Physical Notes, converted, canceled, repurchased, redeemed 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 Note 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 Note 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. Section 2.11(c) of the Base Indenture shall, with respect to the Notes, be superseded in its entirety by this Section 2.05(d), and any reference in the Base Indenture to such
Section 2.11(c) shall, with respect to the Notes, be deemed to refer instead to this Section 2.05(d). 

  
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 The Trustee shall have no obligation or duty to monitor, determine or inquire as to compliance
with any restrictions on transfer imposed under this Supplemental Indenture or under applicable law with respect to any transfer of any interest in any Note (including any transfers between or among Depositary participants or beneficial owners of
interests in any Global Note) other than to require delivery of such certificates and other documentation or evidence as are expressly required by, and to do so if and when expressly required by the terms of, this Supplemental Indenture, and to
examine the same to determine substantial compliance as to form with the express requirements hereof. 
 Neither the Trustee nor any Agent
shall have any responsibility or liability for any actions taken or not taken by the Depositary. 
 Section 2.06. Mutilated,
Destroyed, Lost or Stolen Notes. (a) The last sentence of the first paragraph of Section 2.07 of the Base Indenture and the second and third paragraphs of Section 2.07 of the Base Indenture shall, with respect to the Notes, be
superseded in their entirety by Section 2.06(b). 
 (b) No service charge shall be imposed by the Company, the Trustee, the Security
Registrar, any co-Security 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 9 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.

 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) the 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, redemption, 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, redemption, conversion or repurchase of negotiable instruments or other securities without their surrender. 

  
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 Section 2.07. Cancellation of Notes Paid, Converted, Etc.
(a) Section 2.08 of the Base Indenture shall, with respect to the Notes, be superseded in its entirety by Section 2.07(b), and any reference in the Base Indenture to such Section 2.08 shall, with respect to the Notes, be deemed to
refer instead to Section 2.07(b). 
 (b) The Company shall cause all Notes surrendered for the purpose of payment, repurchase,
redemption, registration of transfer or exchange or conversion, if surrendered to the Company or any of the Company’s agents, Subsidiaries or Affiliates, to be surrendered to the Trustee for cancellation. All Notes delivered to the Trustee
shall, upon receipt of a written request in a Company Order, 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 the Indenture, no
Notes shall be authenticated in exchange for any Notes surrendered to the Trustee for cancellation. The Trustee shall cancel Notes in accordance with its customary procedures and, after such cancellation, shall deliver evidence of such cancellation
to the Company, at the Company’s written request in a Company Order. 
 Section 2.08. Additional Notes; Repurchases.
The Company may, without the consent of, or notice to, the Holders and notwithstanding Section 2.02, reopen the Indenture and issue additional Notes under the Indenture 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 and, if applicable, restrictions on transfer in respect 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 one or more separate CUSIP numbers. 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 13.07 of the Base Indenture, as the Trustee shall reasonably request. In addition, the Company may, to the extent permitted by law, 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, in each case, without prior notice to the Holders. The Company shall cause any Notes so repurchased (other than Notes repurchased pursuant to cash-settled swaps or other derivatives) to be surrendered to the Trustee for cancellation in
accordance with Section 2.07 and such Notes shall no longer be considered outstanding under the Indenture upon their repurchase. 

Section 2.09. CUSIP Numbers. (a) Section 2.12 of the Base Indenture shall, with respect to the Notes, be
superseded in its entirety by Section 2.09(b), and any reference in the Base Indenture to such Section 2.12 shall, with respect to the Notes, be deemed to refer instead to Section 2.09(b). 

(b) 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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 ARTICLE 3 

SATISFACTION AND DISCHARGE 

Section 3.01. Applicability of Article 11 of the Base Indenture. Article 11 of the Base Indenture shall not apply to the
Notes. Instead, the satisfaction and discharge provisions set forth in this Article 3 shall, with respect to the Notes, supersede in their entirety such Article 11 of the Base Indenture, and all references in the Base Indenture to such Article 11 or
any Sections thereof and satisfaction and discharge provisions therein, as the case may be, shall, with respect to the Notes, be deemed to be references to this Article 3 and the satisfaction and discharge provisions set forth in this Article 3.

 Section 3.02. Satisfaction and Discharge. (a) The Indenture and the Notes shall cease to be of further effect
when (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 hereof and Section 2.07 of the Base
Indenture) have been delivered to the Trustee for cancellation or (ii) the Company has deposited with the Trustee or delivered to Holders, as applicable, after the Notes have become due and payable, whether on the Maturity Date, any Redemption
Date, any Fundamental Change Repurchase Date, upon conversion or otherwise, cash, shares of the Common Stock or a combination thereof, as applicable, solely to satisfy the Company’s Conversion Obligation, sufficient to pay all of the
outstanding Notes and all other sums due and payable under the Indenture and the Notes by the Company and (b) the Trustee, upon request of the Company contained in an Officer’s Certificate and at the expense of the Company, shall execute
proper instruments acknowledging such satisfaction and discharge of the Indenture and the Notes, when 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 the Indenture have been complied with. Notwithstanding the satisfaction and discharge of the Indenture and the Notes, the obligations of the Company to the Trustee under Section 7.06 of
the Base Indenture shall survive.  
 Section 3.03. Repayment to Company. Any money and shares of Common Stock
deposited with the Trustee or any paying agent, or then held by the Company, in trust for the payment of the principal (including the Redemption Price and 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 Redemption Price and 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 or such paying agent with respect to such trust money and shares of Common Stock, and all liability of the Company as trustee thereof, shall
thereupon cease; provided, however, that the Trustee or such paying agent, before being required to make any such repayment, may at the  

  
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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. 
 ARTICLE 4 

PARTICULAR COVENANTS OF THE COMPANY 

Section 4.01. Payment of Principal and Interest. This Section 4.01 shall supersede, with respect to the Notes,
Section 4.01 of the Base Indenture and all references in the Base Indenture to Section 4.01 thereof shall be deemed, for the purposes of the Notes, to be references to this Section 4.01 with respect to the Notes. The Company covenants and
agrees that it will pay or cause to be paid the principal (including the Redemption Price and the Fundamental Change Repurchase Price, if applicable) of, 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. Conversion Agent. The paying agent and
Security Registrar for the Notes shall be located in the continental United States of America. The Company will also maintain in the continental United States of America an office or agency where the Notes may be surrendered for conversion
(“Conversion Agent”). The Company will give prompt written notice to the Trustee of the location, and any change in the location, of the Conversion Agent. 

The Company may also from time to time designate additional offices or agencies where the Notes may be surrendered for conversion 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 a Conversion Agent in the continental United States of
America. 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 term “Conversion Agent” includes any such additional
or other offices or agencies, as applicable. 
 The Company hereby initially designates the Trustee as the Conversion Agent, and
hereby initially designates the Corporate Trust Office as the location of the paying agent, Security Registrar and Conversion Agent for the Notes. 

Section 4.03. [Reserved]. 

Section 4.04. 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 ended on December 31, 2017) an Officer’s Certificate stating whether the signers thereof have knowledge of any Event of Default by the Company and, if so,
specifying each such failure and the nature thereof. In addition, the Company shall deliver to the Trustee, as soon as possible, and in any event within 30 days after obtaining the knowledge of the occurrence of any Event of Default, an
Officer’s Certificate setting forth the details of such Event of Default, its status and the action that the Company is taking or proposing to take in  

  
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respect thereof; provided that the Company is not required to deliver such notice if such Event of Default has been cured. Section 13.12 of the Base Indenture shall, with respect
to the Notes, be superseded in its entirety by this Section 4.04, and any reference in the Base Indenture to such Section 13.12 shall, with respect to the Notes, be deemed to refer instead to this Section 4.04. 

Section 4.05. Reports. The Company shall file with the Trustee and the Holders copies of any annual or quarterly reports
(on Form 10-K or Form 10-Q or any respective successor form) that the Company is required to file with the Commission pursuant to Section 13 or 15(d) of the Exchange Act (excluding any such information, documents or reports, or portions
thereof, subject to confidential treatment and any correspondence with the Commission) within 15 days after the same are required to be filed with the Commission (giving effect to any grace period provided by Rule 12b-25 under the Exchange Act or
any successor rule). Any such document or report that the Company files with the Commission via the Commission’s EDGAR system (or any successor system) shall be deemed to be filed with the Trustee and the Holders for purposes of this Section
4.05 at the time such document or report is filed via the EDGAR system (or such successor system). Delivery of the reports and documents described in this Section 4.05 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). Trustee shall have no liability or responsibility for the filing, timeliness or content of any such reports. Section 5.03 of the Base Indenture shall, with respect to the Notes,
be superseded in its entirety by this Section 4.05, and any reference in the Base Indenture to such Section 5.03 shall, with respect to the Notes, be deemed to refer instead to this Section 4.05. 

Section 4.06. 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 the 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. 
 Section 4.07. Further Instruments and Acts. Upon request of the
Trustee, the Company shall 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 the Indenture.  

Section 4.08. Company to Furnish Trustee Names and Addresses of Securityholders. Section 5.01 of the Base Indenture is
hereby amended with respect to the Notes by deleting the phrase “(as defined in Section 2.03)” therein. 

Section 4.09. Existence. Subject to Article 12, the Company shall do or cause to be done all things necessary to perverse
and keep in full force and effect its corporate existence.  

  
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 ARTICLE 5 

DEFAULTS AND REMEDIES 

Section 5.01. Applicability of Article 6 of the Base Indenture. Article 6 of the Base Indenture shall not apply to the
Notes. Instead, the provisions set forth in this Article 5 shall, with respect to the Notes, supersede in its entirety Article 6 of the Base Indenture, and all references in the Base Indenture to Article 6 thereof and the provisions therein, as the
case may be, shall, with respect to the Notes, be deemed to be references to this Article 5 and the applicable provisions set forth in this Article 5, respectively.  

Section 5.02. 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 Optional
Redemption, 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 the Indenture upon exercise of a Holder’s conversion right and such failure continues for five (5) Business Days; 

(d) failure by the Company to issue a Fundamental Change Company Notice in accordance with Section 10.02, a Make-Whole Fundamental Change
Company Notice in accordance with Section 9.03(b) or a notice of a specified corporate transaction in accordance with Section 9.01(b)(ii) or Section 9.01(b)(iii), in each case, when due, and, except in the case of a notice of a specified corporate
transaction in accordance with Section 9.01(b)(ii), such failure continues for five (5) Business Days; 
 (e) failure by the Company to
comply with its obligations under Article 12; 
 (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 the Indenture; 

(g) default by the Company or any 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 $10,000,000 (or its foreign currency equivalent) in the aggregate of the Company and/or any such 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 date or (ii) constituting a failure to pay the principal or interest of any such debt when
due and 

  
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payable (after the expiration of all applicable grace periods) at its stated maturity, upon required repurchase, upon declaration of acceleration or otherwise, and in the cases of clauses (i) and
(ii), 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 is not 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 the Indenture; 

(h) a final judgment or judgments for the payment of $10,000,000 (or its foreign currency equivalent) or more (excluding any amounts covered
by insurance) in the aggregate rendered against the Company or any 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 fail generally 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 90 consecutive days. 
 Section 5.03. 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 5.02(i) or Section 5.02(j) with respect to the Company, unless the principal of all of the Outstanding
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 of the Base Indenture, by notice in
writing to the Company (and to the Trustee if given by Holders), may (and the Trustee, at the written request of such Holders, shall) 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 the Indenture or in the Notes to the contrary notwithstanding. If an Event of Default specified in Section
5.02(i)  

  
 23 








 
or Section 5.02(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 of the Base Indenture, 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 the 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 5.10, 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 the 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 Redemption Price and 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. 

Section 5.04. Additional Interest. Notwithstanding anything in the Indenture or in the Notes to the contrary, to the extent
the Company elects, the sole remedy for an Event of Default relating to (i) the failure by the Company to file with the Trustee pursuant to Section 314(a)(1) of the Trust Indenture Act any documents or reports that the Company is required
to file with the SEC pursuant to Section 13 or 15(d) of the Exchange Act or (ii) the failure by the Company to comply with its reporting obligations under Section 4.05 (the obligations described in clauses (i) and (ii), the
“Reporting Obligations”) 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 (x) 0.25% per annum of the
principal amount of the Notes outstanding for each day during the first 180 calendar days after the occurrence of such an Event of Default and (y) 0.50% per annum of the principal amount of the Notes outstanding for each day from the 181st
calendar day to, and including, the 365th calendar day following the occurrence of such an Event of Default.  
 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. On the 366th calendar day after such Event of Default (if the Event of Default relating to the Company’s
failure to comply 

  
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with the Reporting Obligations is not cured or waived prior to such 366th calendar day), the Notes shall be immediately subject to acceleration under Section 5.03. The provisions of this Section
5.04 shall not affect the rights of Holders of Notes in the event of the occurrence of any other Event of Default. In the event the Company does not elect to pay the Additional Interest following an Event of Default relating to the Reporting
Obligations in accordance with this Section 5.04 or the Company elected to make such payment but does not pay the Additional Interest when due, the Notes shall be immediately subject to acceleration under Section 5.03. 

In order to elect to pay the Additional Interest as the sole remedy during the first 365 days after the occurrence of an Event of Default
relating to the failure by the Company to comply with the Reporting Obligations in accordance with this Section 5.04, the Company must notify all Holders of the Notes, the Trustee and the paying agent of such election prior to the beginning of such 365-day period. Upon the Company’s failure to timely give such notice, the Notes shall be immediately subject to acceleration under Section 5.03. 

Section 5.05. Payments of Notes on Default; Suit Therefor. If an Event of Default described in Section 5.02(a) or Section
5.02(b) 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 (including the Redemption Price and the
Fundamental Change Repurchase Price, if applicable), 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 of the Base Indenture. 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. 

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 5.05, 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,


  
 25 








 
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 of the Base Indenture; 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 of the Base Indenture, 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 the 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 the 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. 

In case the Trustee shall have proceeded to enforce any right under the Indenture and such proceedings shall have been discontinued or
abandoned because of any waiver pursuant to Section 5.10 or any rescission and annulment pursuant to Section 5.03 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 5.06. Application of Monies Collected by Trustee. Any monies
collected by the Trustee pursuant to this Article 5 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


  
 26 








 
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 under Section 7.06 of the Base Indenture; 

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 Redemption Price and 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 Redemption Price and 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 Redemption Price and 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 5.07. Proceedings by Holders. Except to enforce the right to receive payment of principal (including, if applicable, the
Redemption Price and 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 the Indenture to institute any suit, action or proceeding in equity or at law upon or under or with respect to the 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; 
 (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 reasonably satisfactory to it against any loss, liability or expense to be incurred therein or thereby; 

  
 27 








 (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 5.11, 

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 the 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 the 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 5.07, 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 the Indenture and any provision of any Note, each Holder shall have the right to receive payment or delivery, as the
case may be, of (x) the principal (including the Redemption Price and 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 the Indenture, or to institute suit for the enforcement of any such payment or delivery, as the case may be. 

Section 5.08. 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 the 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 the Indenture or in aid of the exercise of any power granted in the Indenture, or to enforce any other legal or equitable right vested in the Trustee by the Indenture or by law.

 Section 5.09. Remedies Cumulative and Continuing. Except as provided in the last paragraph of Section 2.06, all powers and
remedies given by this Article 5 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 the 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 5.08, every power
and remedy given by this Article 5 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 5.10. 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 of the Base Indenture 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 the 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 of the Base Indenture may on
behalf of the Holders of all of the Notes 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 Redemption Price
and any Fundamental Change Repurchase Price) of, the Notes when due that has not been cured pursuant to the provisions of Section 5.02, (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 8 cannot be modified or amended without the consent of each Holder of an outstanding Note affected. 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 5.10, said Default or Event of Default shall for all purposes of the Notes and the 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 5.11. Notice
of Defaults. The Trustee shall, within 90 days after the occurrence and continuance of a Default of which a Responsible Officer has actual knowledge, deliver to all Holders notice of all Defaults known to a Responsible Officer, 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 Redemption Price and 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 the Trustee in good faith determines that
the withholding of such notice is in the interests of the Holders. 
 Section 5.12. Undertaking to Pay Costs. All parties to the
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 the 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 5.12 (to the extent
permitted by law) shall not apply to any suit instituted by the Trustee, to any 

  
 29 








 
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
of the Base Indenture, 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 Redemption Price and 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 9. 
 ARTICLE 6 

INTENTIONALLY OMITTED. 

ARTICLE 7 

HOLDERS’ MEETINGS 

Section 7.01. 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 7 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 the Indenture, or to consent to the waiving of any Default or Event of Default hereunder (in each case, as permitted under the Indenture) and its consequences, or to take any other action authorized to be taken by Holders
pursuant to any of the provisions of Article 5; 
 (b) to remove the Trustee and nominate a successor trustee pursuant to the provisions of
Article 7 of the Base Indenture; 
 (c) to consent to the execution of an indenture or indentures supplemental hereto pursuant to the
provisions of Section 8.03; 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 the Indenture or under applicable law. 
 Section 7.02. Call of
Meetings by Trustee. The Trustee may at any time call a meeting of Holders to take any action specified in Section 7.01, 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 of the Base Indenture, 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. 

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. 

  
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 Section 7.03. 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 7.01, by delivering notice thereof as provided in Section 7.02. 

Section 7.04. 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 7.05. Regulations. Notwithstanding any other provisions of the 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 7.03, 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 outstanding Notes represented at the meeting and entitled to vote at the meeting. 

Subject to the provisions of Section 8.04 of the Base Indenture, 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 7.02 or Section 7.03 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 7.06. 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 7.02. 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 7.07. No Delay of Rights by Meeting.
Nothing contained in this Article 7 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 the Indenture or of the Notes. 

ARTICLE 8 

SUPPLEMENTAL INDENTURES 

Section 8.01. Applicability of Article 9 of the Base Indenture. Article 9 of the Base Indenture shall not apply to the Notes.
Instead the provisions set forth in this Article 8 shall, with respect to the Notes, supersede in their entirety Article 9 of the Base Indenture, and all references in the Base Indenture to Article 9 thereof and the provisions therein, as the case
may be, shall, with respect to the Notes, be deemed to be references to this Article 8 or the applicable provisions set forth in this Article 8, respectively. 

Section 8.02. 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 enter into an indenture or indentures supplemental hereto 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 the Indenture pursuant to Article 12; 

  
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 (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 in any material respect; 

(g) in connection with any Merger Event, to provide that the Notes are convertible into Reference Property, subject to the provisions of
Section 9.02, and make such related changes to the terms of the Notes to the extent expressly required by Section 9.07; 
 (h) to conform
the provisions of the Indenture to the “Description of debt securities” section of the prospectus of the Company dated October 13, 2017, as supplemented and/or amended by the “Description of Notes” section in the preliminary
prospectus supplement of the Company relating to the Notes dated November 14, 2017, as supplemented by the related pricing term sheet dated November 16, 2017; 

(i) to comply with any requirement of the Commission in connection with the qualification of the Indenture under the Trust Indenture Act; 

(j) to comply with the rules of any applicable securities depository, including DTC, so long as such amendment does not adversely affect the
rights of any Holder; 
 (k) to appoint a successor trust with respect to the Notes; or 

(l) to provide for the issuance of additional Notes. 

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 the Indenture or otherwise. 
 Any supplemented indenture authorized by the provisions of this Section
8.02 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 provision of Section 8.03. 

Section 8.03. Supplemental Indentures with Consent of Holders. With the consent (evidenced as provided in Article 8 of the Base
Indenture) of the Holders of at least a majority of the aggregate principal amount of the Notes then outstanding (determined in accordance with Article 8 of the Base Indenture 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 

  
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eliminating any of the provisions of the Indenture or any supplemental indenture 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) except as required by the Indenture, make any change that adversely affects the conversion rights of any Notes; 

(e) reduce the Redemption Price or 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; or 

(h) make any change in this Article 8 or in the waiver provisions in Section 5.03 or Section 5.10, in each case, that requires each
Holder’s consent. 
 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 8.06, 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 the
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 8.03 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 8.04.
Effect of Supplemental Indentures. Upon the execution of any supplemental indenture pursuant to the provisions of this Article 8, the 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 the 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 the Indenture for any and all purposes. 

  
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 Section 8.05. Notation on Notes. Notes authenticated and delivered after the
execution of any supplemental indenture pursuant to the provisions of this Article 8 may, at the Company’s expense, bear a notation in form approved by the Trustee 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 Trustee and the Board of Directors, to any modification of the Indenture contained in any such supplemental indenture may, at the Company’s expense, be
prepared and executed by the Company, authenticated by the Trustee (or an Authenticating Agent duly appointed by the Trustee pursuant to Section 2.10 of the Base Indenture) and delivered in exchange for the Notes then outstanding, upon
surrender of such Notes then outstanding. 
 Section 8.06. Evidence of Compliance of Supplemental Indenture to Be Furnished to
Trustee. In addition to the documents required by Section 13.07 of the Base Indenture, 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 8, is permitted or authorized by the Indenture and is the legal, valid and binding obligation of the Company enforceable against it in accordance with its terms. 

ARTICLE 9 

CONVERSION OF NOTES 

Section 9.01. Conversion Privilege. (a) Subject to and upon compliance with the provisions of this Article 9, 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 one or more of the
conditions described in Section 9.01(b), at any time prior to the close of business on the Business Day immediately preceding May 1, 2022 under the circumstances and during the periods set forth in Section 9.01(b), and (ii) regardless of
the conditions described in Section 9.01(b), on or after May 1, 2022 until the close of business on the second Scheduled Trading Day immediately preceding the Maturity Date, in each case, at an initial conversion rate of 29.6626 shares of
Common Stock (subject to adjustment as provided in this Article 9, the “Conversion Rate”) per $1,000 principal amount of Notes (subject to, and in accordance with, the settlement provisions of Section 9.02, the “Conversion
Obligation”). 
 (b) (i) Prior to the close of business on the Business Day immediately preceding May 1, 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 ten 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 Prices shall be determined by the Bid Solicitation Agent pursuant to this subsection (b)(i) and the definition of Trading Price set forth in Section
1.01. 

  
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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 determine the Trading Price per $1,000 principal amount of Notes
unless the Company has requested such determination, 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
determine, or if the Company is acting as Bid Solicitation Agent, the Company shall determine, the Trading Price per $1,000 principal amount of Notes 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. Any such determination shall be conclusive absent manifest error. If (x) the Company is
not acting as Bid Solicitation Agent, and the Company does not, when the Company is required to, instruct the Bid Solicitation Agent to determine the Trading Price per $1,000 principal amount of Notes 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 determination, or (y) the Company is acting as Bid Solicitation Agent and the Company fails to make such
determination 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 set forth above has been met, the Company shall so notify the Holders, the Trustee and the Conversion Agent (if other than the Trustee). If, at any time
after the Trading Price condition set forth above 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 date, the Company shall so notify the Holders of the Notes, the Trustee and the Conversion Agent (if other than the Trustee) and thereafter neither the Company nor the Bid Solicitation Agent (if other than the Company) shall be required to
solicit bids again until a new Holder request is made as provided above. 
 (ii) If, prior to the close of business on the
Business Day immediately preceding May 1, 2022, the Company elects to: 
 (A)    distribute to all
or substantially all holders of the Common Stock any rights, options or warrants (other than in connection with a stockholder rights plan prior to separation of such rights from the Common Stock) entitling them, for a period of not more than 60
calendar days after the announcement date of such distribution, 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 distribution; or 

  
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 (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 in connection with a stockholder rights plan prior to separation of such rights from the Common Stock), which distribution has a per share
value, as reasonably determined by the Company in good faith and in a commercially reasonable manner, 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) at least 45 Scheduled
Trading Days prior to the Ex-Dividend Date for such issuance or distribution (or, if later in the case of any such separation of rights issued pursuant to a stockholder rights plan, as soon as reasonably practicable after the Company becomes aware
that such separation or triggering event has occurred or will occur). 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, in each case, even if the Notes are not otherwise
convertible at such time. 
 (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 May 1, 2022, regardless of whether a Holder has the right to require the Company to repurchase the Notes pursuant to Section 10.01,
or if the Company is a party to a consolidation, merger, binding share exchange, or transfer or lease of all or substantially all of its assets that occurs prior to the close of business on the Business Day immediately preceding May 1, 2022, in
each case, pursuant to which the Common Stock would be converted into cash, securities or other assets (other than a merger effected solely to change the Company’s jurisdiction of incorporation that does not otherwise constitute a Fundamental
Change or a Make-Whole Fundamental Change), all or any portion of a Holder’s Notes may be surrendered for conversion at any time from or after the effective date for such transaction until 35 Scheduled Trading Days after the effective date of
such transaction (or, if the Company gives notice of such transaction to Holders after the effective date of such transaction, until 35 Trading Days after the date the Company gave such notice) or, if such transaction also constitutes a Fundamental
Change, until the related Fundamental Change Repurchase Date. The Company shall notify Holders, the Trustee and the Conversion Agent (if other than the Trustee) as promptly as practicable following the effective date of such transaction but in no
event later than 5 Business Days after the effective date of such transaction. 
 (iv)    Prior to the
close of business on the Business Day immediately preceding May 1, 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
March 31, 2018 (and only during such calendar quarter), if the Last Reported Sale Price of the 

  
 37 








 
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. The Conversion Agent, on behalf of the Company, shall determine at the beginning of each calendar quarter commencing after March 31, 2018
whether the Notes may be surrendered for conversion in accordance with this clause (iv). 
 (v)    If the
Company calls any or all of the Notes for redemption pursuant to Article 11 prior to the close of business on the Business Day immediately preceding May 1, 2022, then a Holder may surrender all or any portion of its Notes for conversion at any
time prior to the close of business on the Scheduled Trading Day prior to the Redemption Date, even if the Notes are not otherwise convertible at such time. After that time, the right to convert on account of the Company’s delivery of the
Redemption Notice shall expire, unless the Company defaults in the payment of the Redemption Price, in which case a Holder of Notes may convert all or any portion of its Notes until the Redemption Price has been paid or duly provided for. 

Section 9.02. Conversion Procedure; Settlement Upon Conversion.  

(a) Subject to this Section 9.02, Section 9.03(b) and Section 9.07(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 9.02 (“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 9.02 (“Combination Settlement”), at its election, as set forth in this Section 9.02. 

(i)    All conversions for which the relevant Conversion Date occurs after the Company’s issuance of a
Redemption Notice with respect to the Notes and prior to the related Redemption Date and all conversions for which the relevant Conversion Date occurs on or after May 1, 2022, shall be settled using the same Settlement Method. 

(ii)    Except for any conversions for which the relevant Conversion Date occurs after the Company’s
issuance of a Redemption Notice with respect to the Notes, but prior to the related Redemption Date, and any conversions for which the relevant Conversion Date occurs on or after May 1, 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 one of the periods 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 either such period, as the case may be),
the Company, 

  
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through the Trustee, shall deliver such Settlement Notice to converting Holders, in accordance with Section 13.11, no later than the close of business on the Trading Day immediately following the
relevant Conversion Date (or, in the case of any conversions for which the relevant Conversion Date occurs (x) after the date of issuance of a Redemption Notice with respect to the Notes and prior to the related Redemption Date, in such
Redemption Notice or (y) on or after May 1, 2022, no later than May 1, 2022). If the Company does not timely 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 with respect to any such Conversion Date or during such period, 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 to be converted in such Settlement Notice, the Specified Dollar Amount per $1,000 principal amount of Notes shall be deemed to be $1,000. By notice to all Holders, the Company may, prior to May 1, 2022, at the
Company’s option, irrevocably elect to satisfy its Conversion Obligation with respect to the Notes through Combination Settlement with a Specified Dollar Amount per $1,000 principal amount of Notes of $1,000 for all Conversion Dates occurring
subsequently to delivery of such notice. 
 (iv)    The cash, shares of Common Stock or combination of
cash and shares of Common Stock payable or deliverable by the Company 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; 

(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, to the converting Holder 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. 

  
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 (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 or liability for any such determination. 

(b)    Subject to Section 9.02(e), before any Holder of a Note shall be entitled to convert a Note as set forth above, a
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 interest payable on the next Interest Payment Date to which such Holder is not
entitled as set forth in Section 9.02(h) and (ii) in the case of a Physical Note, the Holder thereof shall (1) complete, manually sign and deliver an irrevocable notice (or a facsimile, PDF or other electronic transmission thereof) to the
Conversion Agent as set forth in the Form of Notice of Conversion (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 and (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 9.02(h). The Trustee (and if different, the Conversion Agent) shall notify the Company of any conversion pursuant to this Article 9 on the
Conversion Date for such conversion. The exercise of such conversion rights shall be irrevocable. No Holder may surrender Notes for conversion 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 10.02. 
 If more than one Note
shall be surrendered for conversion at one time by the same Holder, the Settlement Amount 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 9.03(b) and Section 9.07(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 Physical Settlement, or on the second Business Day immediately
following the last Trading Day of the relevant Observation Period, in the case of 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  

  
 40 








 
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 deliver a Company Order, and 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 issuance of any shares of Common Stock upon conversion, unless the tax is due because the Holder requests such shares of Common Stock to be issued
in a name other than such Holder’s name, in which case such Holder shall pay that tax. The Conversion Agent may refuse to deliver the certificates representing shares of the Common Stock being issued in a name other than such 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. 

(f)    Except as provided in Section 9.04, 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 9. 
 (g) Upon the conversion of an interest in a Global Note, the Trustee, or
the Note Custodian (if other than the Trustee) 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 payment and delivery, as the case may be, of the Settlement Amount with respect to any converted Note 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 not including, the relevant Conversion Date. As a result, accrued and unpaid interest, if any, to, but not including, 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 shall 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 shall receive the full amount of interest payable on such Notes on the corresponding Interest Payment Date notwithstanding the conversion.


  
 41 








 
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 shall be
accompanied by funds equal to the amount of interest payable on the Notes so converted; provided that no such payment shall be required (1) for conversions following the Regular Record Date immediately preceding the Maturity Date;
(2) if the Company has specified a Redemption Date that is after a Regular Record Date and on or prior to the Business Day immediately following the corresponding Interest Payment Date; (3) 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 (4) to the extent of any overdue interest, if any overdue interest 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 shall receive the full interest payment due on the Maturity Date in cash regardless
of whether their Notes have been converted following such Regular Record Date. 
 (i)    The Person in whose name any
shares of Common Stock shall be issuable upon conversion shall become the holder of record of such shares 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). Upon a conversion of Notes, such Person shall no longer be a Holder of such Notes
surrendered for conversion; provided that (a) the converting Holder shall have the right to receive the Settlement Amount due upon conversion and (b) in the case of a conversion between a Regular Record Date and the corresponding
Interest Payment Date, the Holder of record as of the close of business on such Regular Record Date shall have the right to receive the full amount of interest payable on such Interest Payment Date, in accordance with clause (h) above. 

(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 (or is deemed to elect) 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 9.03. Increased Conversion Rate Applicable to Certain Notes Surrendered in Connection with Make-Whole Fundamental Changes or
Notice of Redemption. (a) If (i) the Effective Date of a Make-Whole Fundamental Change occurs prior to the Maturity Date or (ii) the Company gives a Redemption Notice with respect to any or all of the Notes pursuant to Section
11.02 and, in each case, a Holder elects to convert its Notes in connection with such Make-Whole Fundamental Change or Redemption Notice, as applicable, 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 Notice of 

  
 42 








 
Conversion is received by the Conversion Agent from, and including, the Effective Date of the Make-Whole Fundamental Change up to, and including, 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”). A conversion of Notes shall be deemed for these purposes to be “in
connection with” a Redemption Notice if the Notice of Conversion of the Notes is received by the Conversion Agent from, and including, the date of the Redemption Notice until the close of business on the Scheduled Trading Day immediately
preceding the Redemption Date. 
 (b)    Upon surrender of Notes for conversion in connection with a Make-Whole
Fundamental Change or Redemption Notice, the Company shall, at its option, satisfy the related Conversion Obligation by Physical Settlement, Cash Settlement or Combination Settlement in accordance with Section 9.02; provided, however,
that if the consideration received by holders of the Common Stock in exchange for such Common Stock in any Make-Whole Fundamental Change described in clause (b) of the definition of 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 increase to reflect the Additional Shares), multiplied by such Stock Price. In such event, the Conversion Obligation shall be determined and paid to Holders in cash on the second
Business Day following the Conversion Date. The Company shall notify the Holders of Notes (a “Make-Whole Fundamental Change Company Notice”), in accordance with Section 13.04 of the Base Indenture, 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 in Section 9.03(e), based on the date on which the Make-Whole Fundamental Change occurs or becomes effective or the date of the
Redemption Notice, as the case may be (in each case, the “Effective Date”) and the price paid (or deemed to be paid) per share of the Common Stock in the Make-Whole Fundamental Change or with respect to the Optional Redemption, as
the case may be (the “Stock Price”). If the holders of 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 relevant Effective Date. The Company 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 or expiration date of the event occurs during such five consecutive Trading Day period. In the event that a conversion in connection with a Redemption Notice would also be
deemed to be in connection with a Make-Whole Fundamental Change, a Holder of the Notes to be converted shall be entitled solely to a single increase to the Conversion Rate with respect to the first to occur of the Effective Date of the applicable
Redemption Notice or the Effective Date of the applicable Make-Whole Fundamental Change. 

  
 43 








 (d)    The Stock Prices set forth in the column headings of the table in
Section 9.03(e) shall be adjusted as of any date on which the Conversion Rate is otherwise adjusted. The adjusted Stock Prices shall equal the Stock Prices immediately prior to such adjustment, multiplied by a fraction, the numerator of which is the
Conversion Rate immediately prior to the 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 in Section 9.03(e) shall be
adjusted in the same manner and at the same time as the Conversion Rate as set forth in Section 9.04. 
 (e)    The
following table sets forth the number of Additional Shares by which the Conversion Rate shall be increased per $1,000 principal amount of Notes pursuant to this Section 9.03 for each Stock Price and Effective Date set forth below: 

 

																																																													
	 	  	Stock Price	 
	 Effective Date
	  	$26.97	 	  	$30.00	 	  	$32.50	 	  	$33.71	 	  	$35.00	 	 	$40.00	 	  	$43.83	 	  	$50.00	 	  	$75.00	 	  	$100.00	 	  	$125.00	 	  	$150.00	 	  	$175.00	 	  	$200.00	 	  	$250.00	 
	 November 20, 2017
	  	 	7.4156	 	  	 	5.8461	 	  	 	4.8687	 	  	 	4.4724	 	  	 	4.0978	 	 	 	2.9865	 	  	 	2.3970	 	  	 	1.7407	 	  	 	0.6423	 	  	 	0.3141	 	  	 	0.1723	 	  	 	0.0951	 	  	 	0.0500	 	  	 	0.0231	 	  	 	0.0000	 
	 November 1, 2018
	  	 	7.4156	 	  	 	5.7977	 	  	 	4.7505	 	  	 	4.3300	 	  	 	3.9349	 	 	 	2.7808	 	  	 	2.1839	 	  	 	1.5378	 	  	 	0.5296	 	  	 	0.2576	 	  	 	0.1405	 	  	 	0.0773	 	  	 	0.0398	 	  	 	0.0173	 	  	 	0.0000	 
	 November 1, 2019
	  	 	7.4156	 	  	 	5.6649	 	  	 	4.5353	 	  	 	4.0866	 	  	 	3.6690	 	 	 	2.4749	 	  	 	1.8803	 	  	 	1.2630	 	  	 	0.3937	 	  	 	0.1951	 	  	 	0.1079	 	  	 	0.0590	 	  	 	0.0296	 	  	 	0.0118	 	  	 	0.0000	 
	 November 1, 2020
	  	 	7.4156	 	  	 	5.3937	 	  	 	4.1572	 	  	 	3.6753	 	  	 	3.2324	 	 	 	2.0129	 	  	 	1.4430	 	  	 	0.8944	 	  	 	0.2551	 	  	 	0.1312	 	  	 	0.0745	 	  	 	0.0406	 	  	 	0.0195	 	  	 	0.0065	 	  	 	0.0000	 
	 November 1, 2021
	  	 	7.4156	 	  	 	4.8062	 	  	 	3.4155	 	  	 	2.8936	 	  	 	2.4280	 	 	 	1.2497	 	  	 	0.7794	 	  	 	0.4055	 	  	 	0.1190	 	  	 	0.0681	 	  	 	0.0396	 	  	 	0.0213	 	  	 	0.0093	 	  	 	0.0016	 	  	 	0.0000	 
	 November 1, 2022
	  	 	7.4156	 	  	 	3.6707	 	  	 	1.1066	 	  	 	0.0000	 	  	 	0.0000	 	 	 	0.0000	 	  	 	0.0000	 	  	 	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 above, the number of Additional Shares by which the Conversion Rate shall be increased 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 $250.00
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 $26.97 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 37.0782 shares of Common Stock, subject to adjustment in the same manner as the Conversion Rate pursuant to Section 9.04. 

  
 44 








 (f) Nothing in this Section 9.03 shall prevent an adjustment to the Conversion Rate pursuant to
Section 9.04 in respect of a Make-Whole Fundamental Change. 
 Section 9.04. 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 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 9.04,
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. 

(a) If the Company exclusively issues shares of the 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;
			
	CR1	  	=	  	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 the Common Stock outstanding immediately prior to the open of business on such Ex-Dividend Date or Effective Date, as applicable (before giving effect to any such dividend, distribution, split or
combination); and
			
	OS1	  	=	  	the number of shares of the Common Stock outstanding immediately after giving effect to such dividend, distribution, share split or share combination.

 Any adjustment made under this Section 9.04(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
9.04(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 distributes to all or substantially all holders of the
Common Stock any rights, options or warrants (other than pursuant to a stockholder rights plan) entitling them, for a period of not more than 60 calendar days after the announcement date of such distribution, 

  
 45 








 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 distribution, the Conversion Rate shall be increased 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 distribution;
			
	CR1	 	=	 	the Conversion Rate in effect immediately after the open of business on such Ex-Dividend Date;
			
	OS0	 	=	 	the number of shares of the Common Stock outstanding immediately prior to the open of business on such Ex-Dividend Date;
			
	X	 	=	 	the total number of shares of the Common Stock distributable pursuant to such rights, options or warrants; and
			
	Y	 	=	 	the number of shares of the 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 distribution of such rights, options or warrants.

 Any increase made under this Section 9.04(b) shall be made successively whenever any such rights, options or warrants are
distributed and shall become effective immediately after the open of business on the Ex-Dividend Date for such distribution. To the extent that shares of 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 distribution 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 distributed, the Conversion Rate shall be decreased to the Conversion Rate that would then be in effect if such Ex-Dividend Date for such distribution had not occurred. 

For the purpose of this Section 9.04(b) and for the purpose of Section 9.01(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 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 of such distribution, 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 Company in good faith and in a commercially reasonable manner. 

  
 46 








 (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 as to which an
adjustment was effected pursuant to Section 9.04(a) or Section 9.04(b), (ii) except as otherwise provided below, rights issued pursuant to any stockholder rights plan of the Company then in effect, (iii) distributions of Reference Property
issued in exchange for the Common Stock pursuant to Section 9.07, (iv) dividends or distributions paid exclusively in cash as to which the provisions set forth in Section 9.04(d) shall apply, and (v) Spin-Offs as to which the provisions
set forth below in this Section 9.04(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: 
  
 



 
  

					
	where,	  		  	
			
	CR0	  	=	  	the Conversion Rate in effect immediately prior to the open of business on the Ex-Dividend Date for such distribution;
			
	CR1	  	=	  	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 Company in good faith and in a commercially reasonable manner) of the Distributed Property distributed 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 9.04(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. In the case
of any distribution of rights, options or warrants, to the extent such rights options or warrants expire unexercised, the applicable Conversion Rate shall be immediately readjusted to the applicable Conversion Rate that would then be in effect had
the increase made for the distribution of such rights, options or warrants been made on the basis of delivery of only the number of shares of Common Stock actually delivered upon exercise of such rights, options or warrants. 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 

  
 47 








 
the Common Stock receive the Distributed Property without having to convert its Notes, 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 Company determines the “FMV” (as defined above) of any distribution for purposes of this Section 9.04(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 “SP0.” 

With respect to an adjustment pursuant to this Section 9.04(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: 
  





 
  

					
	where,	  		  	
			
	CR0	  	=	  	the Conversion Rate in effect immediately prior to the end of the Valuation Period;
			
	CR1	  	=	  	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, the 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 Conversion Date in determining the Conversion Rate and
(y) in respect of any conversion of the 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, the
references to “10” in the preceding paragraph shall be deemed replaced with such lesser number of Trading Days as have elapsed between the Ex-Dividend Date for 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 

  
 48 








 
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 9.04(c) (and subject in all respects to Section
9.11), 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 shares of 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 9.04(c) (and no adjustment to the Conversion Rate under this Section 9.04(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 9.04(c). If any such right, option or warrant, including any such existing rights, options or warrants distributed prior to the date of this Supplemental 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 9.04(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. 

For purposes of Section 9.04(a), Section 9.04(b) and this Section 9.04(c), if any dividend or distribution to which this Section 9.04(c) is
applicable also includes one or both of: 
 (A) a dividend or distribution of shares of Common Stock to which Section 9.04(a) is applicable
(the “Clause A Distribution”); or 
 (B) a dividend or distribution of rights, options or warrants to which Section 9.04(b)
is applicable (the “Clause B Distribution”), 

  
 49 








 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 9.04(c) is applicable (the “Clause C Distribution”) and any Conversion Rate adjustment required by this Section 9.04(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 9.04(a) and Section
9.04(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 9.04(a) or “outstanding immediately prior to the open of business on such Ex-Dividend Date” within the meaning of Section 9.04(b). 

(d) If the Company makes any cash dividend or distribution to all or substantially all holders of the shares 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;
			
	CR1	  	=	  	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 of the Common Stock the Company distributes to all or substantially all holders of the Common Stock.

 Any increase made pursuant to this Section 9.04(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 without having to convert its Notes, 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. 

  
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 (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 any 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
“Expiration Date”);
			
	CR1	  	=	  	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 Company in good faith and in a commercially reasonable manner) 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);
			
	OS1	  	=	  	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
			
	SP1	  	=	  	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.

 The increase to the Conversion Rate under this Section 9.04(e) shall occur at the close of business on the
10th Trading Day immediately following, and including, the Trading Day next succeeding the Expiration Date; 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, references to “10” or “10th” in the preceding paragraph shall be deemed replaced with such lesser
number of Trading Days as have elapsed from, and including, the Trading Day next succeeding such Expiration Date and to, and including, such 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 

  
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relevant Observation Period for such conversion and within the 10 Trading Days immediately following, and including, the Trading Day next succeeding any Expiration Date, references to
“10” or “10th” in the preceding paragraph shall be deemed replaced with such lesser number of Trading Days as have elapsed from, and including, the Trading Day next succeeding such Expiration Date and such Trading Day in
determining the Conversion Rate as of such Trading Day. 
 If the Company is obligated to purchase shares of Common Stock pursuant to any
such tender or exchange offer described in this Section 9.04(e) but is permanently prevented by applicable law from effecting any such purchase or all such purchases are rescinded, the applicable Conversion Rate will be readjusted to be the
Conversion Rate that would then be in effect if such tender or exchange offer had not been made or had been made only in respect of the purchases that have been made. 

(f) Notwithstanding this Section 9.04 or any other provision of the 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 shares of the Common Stock as of the related Conversion Date as
described under Section 9.02(i) based on an adjusted Conversion Rate for such Ex-Dividend Date, then, notwithstanding the Conversion Rate adjustment provisions in this Section 9.04, 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 shares of the 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 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. 

(h) In addition to those adjustments required by clauses (a), (b), (c), (d) and (e) of this Section 9.04, and to the extent permitted by
applicable law and subject to the applicable rules of any exchange on which any securities of the Company are then listed, 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
Company 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 any exchange on which any of the Company’s securities are then
listed, 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 shares of 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. 

(i) Notwithstanding anything to the contrary in this Article 9, the Conversion Rate shall not be adjusted: 

  
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 (i) upon the issuance of shares of Common Stock at a price below the Conversion
Price or otherwise, other than any such issuance described in Section 9.04(a), Section 9.04(b) or Section 9.04(c); 
 (ii)
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; 
 (iii) upon the issuance of any shares of the 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; 

(iv) 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 (iii) of this subsection and outstanding as of the date the Notes were first issued; 

(v) for a third-party tender offer by any party other than a tender offer by one or more of the Company’s Subsidiaries as
described in Section 9.04(e); 
 (vi) upon the repurchase of any shares of the Common Stock pursuant to an open market share
repurchase program or other buy-back transaction, including structured or derivative transactions such as accelerated share repurchase transactions or similar forward derivatives, or other buy-back transaction, that is not a tender offer or exchange
offer of the kind described in Section 9.04(e); 
 (vii) solely for a change in the par value of the Common Stock; or 

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

(j) All calculations and other determinations under this Article 9 shall be made by the Company and all calculations of the Conversion Rate
shall be made to the nearest one-ten thousandth (1/10,000th) of a share. 
 (k) If an adjustment to the Conversion Rate otherwise
required by the provisions described in Section 9.04 would result in a change of less than 1% to the Conversion Rate, then, notwithstanding the foregoing, the Company may, at its election, defer and carry forward such adjustment, except that all
such deferred adjustments must be given effect immediately upon the earliest to occur of the following: (i) when all such deferred adjustments would result in an aggregate change of at least 1% to the Conversion Rate; (ii) the Conversion
Date for any Notes (in the case of Physical Settlement of the relevant conversion); (iii) on each Trading Day of any Observation Period related to any conversion of Notes (in the case of Combination Settlement or Cash Settlement of the relevant
conversion); and (iv) on the Effective Date of any Make-Whole Fundamental Change, in each case, unless the adjustment has already been made. 

  
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 (l) 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 and for the avoidance of doubt, neither the Trustee nor
the Conversion Agent shall have any liability or responsibility for the Conversion Rate, the calculation thereof or application thereof. 

(m) For purposes of this Section 9.04, 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 9.05. Adjustments of Prices. Whenever any
provision of the 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 or Optional Redemption), the Company shall make appropriate adjustments in good faith and in a commercially reasonable manner 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. 

For the avoidance of doubt, the adjustments made pursuant to this Section 9.05 shall be made, solely to the extent the Company determines in
good faith and in a commercially reasonable manner that any such adjustment is appropriate, without duplication of any adjustment made pursuant to the provision set forth under Section 9.04. 

Section 9.06. Shares To Be Fully Paid. The Company shall provide, 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 9.03 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). 

  
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 Section 9.07. 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 a change to par value, or from par value
to no par value, or changes resulting from a subdivision or combination), 
 (ii) any consolidation, merger, combination or
similar transaction involving the Company, 
 (iii) any sale, lease or other transfer to a third party of the consolidated
assets of the Company and the Company’s Subsidiaries substantially as an entirety 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 or 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 the 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 would have been 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 purchasing Person, as the case may be, shall
execute with the Trustee a supplemental indenture permitted under Section 8.02(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 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 9.02 and (B) (I) any amount payable
in cash upon conversion of the Notes in accordance with Section 9.02 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
9.02 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 been entitled to receive in such Merger Event and (III) the Daily VWAP shall be calculated based on the
value of a unit of Reference Property. 
 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


  
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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 9.03), 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 cash 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. 

Unless the Reference Property is comprised solely of cash, 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 possible to the adjustments provided for in this Article 9. If the Reference Property in respect of any Merger Event includes shares of stock, securities or
other property or assets (other than cash and/or cash equivalents) of a company other than the Company or the successor or purchasing corporation, as the case may be, in such Merger Event, then such other company, if an Affiliate of the Company or
the successor or purchasing corporation, shall also execute such supplemental indenture, and such supplemental indenture shall contain such additional provisions to protect the interests of the Holders, including the right of Holders to require the
Company to repurchase their Notes upon a Fundamental Change pursuant to Section 10.01, as the Company in good faith reasonably considers necessary by reason of the foregoing. 

(b) Promptly following execution by the Company of a supplemental indenture pursuant to subsection (a) of this Section 9.07, the Company shall
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 twenty days after execution thereof. Failure to deliver such notice shall not affect the legality or validity of such supplemental indenture. 

(c) The Company shall not become a party to any Merger Event unless its terms are consistent with this Section 9.07. None of the foregoing
provisions shall affect the right of a Holder 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 9.01 and Section 9.02 prior to the effective date of
such Merger Event. 
 (d) The above provisions of this Section 9.07 shall similarly apply to successive Merger Events. 

  
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 Section 9.08. Certain Covenants. (a) 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 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 9.09. 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 9.07 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 9.07 or to any adjustment to be made with respect thereto, but,
subject to the provisions of Section 7.01 of the Base Indenture, 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 9.01(b) has occurred that makes the Notes eligible for conversion or no longer eligible therefor until the Company has delivered to the Trustee and the Conversion Agent the notices referred to in Section 9.01(b) with
respect to the commencement or termination of such conversion rights, on which notices the Trustee and the Conversion Agent may conclusively rely, 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 9.01(b). 

  
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 Section 9.10. 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 9.04 or
Section 9.11; 
 (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 the Indenture, in which case the timing and delivery
requirements of such provision shall supersede this Section 9.10 or when the Company otherwise provides public notice of such event), 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, as promptly as possible but in any event at least 10 days prior to the applicable date hereinafter specified, a notice stating (i) 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, or (ii) the date on which
such Merger Event, dissolution, liquidation or winding-up is expected to become effective or occur, and the date as of which it is expected that holders of Common Stock of record shall be entitled to exchange their Common Stock for securities or
other property deliverable upon such Merger Event, dissolution, liquidation or winding-up. 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; provided, however, that the Company may delay the delivery of any such notice required under this Section 9.10 to the effective date of such event if the Company in good faith
determines that the withholding of such notice is in the interests of the Company and does not adversely affect the rights of any Holder in any material respect. 

Section 9.11. 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, 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
9.04(c), subject to readjustment in the event of the expiration, termination or redemption of such rights. 
 Section 9.12. Exchange
in Lieu of Conversion. (a) When a Holder surrenders its Notes for conversion, the Company may, at its election (an “Exchange Election”), direct the Conversion Agent to surrender, on or prior to the Business Day immediately
following the Conversion Date, such Notes to one or more financial institutions designated by the Company for exchange in lieu of conversion. In order to accept any Notes surrendered for conversion, the designated financial institution(s) must agree
to timely pay or deliver, as the case may be, in 

  
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exchange for such Notes, cash, shares of Common Stock or a combination of cash and shares of Common Stock, at the Company’s election, that would otherwise be due upon conversion as described
under Section 9.02. If the Company makes an Exchange Election, it shall, by the close of business on the Business Day following the relevant Conversion Date, notify in writing the Trustee, the Conversion Agent (if other than the Trustee) and the
Holder surrendering its Notes for conversion that the Company has made such Exchange Election and notify the designated financial institution(s) of the relevant deadline for payment or delivery, as the case may be, of the conversion consideration
and the type of conversion consideration to be paid and/or delivered, as the case may be. 
 (b) Any Notes exchanged by the designated
financial institution(s) shall remain outstanding, subject to the Applicable Procedures. If the designated financial institution(s) agree(s) to accept any Notes for exchange but does not timely pay and/or deliver, as the case may be, the related
conversion consideration, or if such designated financial institution(s) does not accept the Notes for exchange, the Company shall pay or deliver, as the case may be, the relevant consideration due in respect of the Conversion Obligation, as, and at
the time, required pursuant to the Indenture as if the Company had not made an Exchange Election. 
 (c) The Company’s designation of
any financial institution(s) to which the Notes may be submitted for exchange in lieu of conversion does not require such financial institution(s) to accept any Notes. 

ARTICLE 10 

REPURCHASE OF NOTES AT OPTION OF
HOLDERS 
 Section 10.01. 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 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 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 10. 

(b) Repurchases of Notes under this Section 10.01 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 

  
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compliance with the Depositary’s 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 Corporate Trust 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. 

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

(i) 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 the
Indenture; 
 provided, however, that if the Notes are Global Notes, Holders must surrender their Notes in accordance 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 10.01 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 10.02. 
 The paying agent (if
other than the Company) shall promptly notify the Company of the receipt by it of any Fundamental Change Repurchase Notice or written notice of withdrawal thereof. 

No Fundamental Change Repurchase Notice with respect to any Notes may be surrendered by a Holder thereof if such Holder has also surrendered a
Repurchase Notice and has not validly withdrawn such Repurchase Notice in accordance with Section 10.02. 
 (c) On or before the 20th
calendar day after the occurrence of the effective date of a Fundamental Change, the Company shall provide to all Holders of Notes and 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 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 

  
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notice shall be delivered in accordance with the Applicable Procedures. Each Fundamental Change Company Notice shall specify: 

(i) the events causing the Fundamental Change; 

(ii) the date of the Fundamental Change; 

(iii) the last date on which a Holder may exercise the repurchase right pursuant to this Article 10; 

(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; 

(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 the 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 10.01. Notwithstanding anything to the contrary above, the Company will not be required to repurchase or make an offer to repurchase the Notes upon the occurrence
of the effective date of a Fundamental Change if a third party makes such an offer in the same manner, at the same time and otherwise is in compliance with the requirements for an offer made by the Company as set forth in the Indenture, 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 is in compliance with the requirements for an offer made by the Company as set forth in the Indenture.

 At the Company’s request, the Trustee 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 upon 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 

  
 61 








 
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 of the Depositary 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. 

Section 10.02. Withdrawal of Fundamental Change Repurchase Notice. A Fundamental Change Repurchase Notice may be withdrawn (in
whole or in part) by means of a written notice of withdrawal delivered to the Corporate Trust Office of the paying agent in accordance with this Section 10.02 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, 
 (ii) 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, Holders must withdraw the relevant Fundamental Change Repurchase Notice in accordance
with the Applicable Procedures. 
 Section 10.03. Deposit of Fundamental Change Repurchase Price. (a) The Company will
deposit with the Trustee (or other paying agent appointed by the Company, or if the Company is acting as its own paying agent, set aside, segregate and hold in trust as provided in Section 4.03) on or prior to 11:00 a.m., New York City time, on the
Fundamental Change Repurchase Date 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 Trustee (or other paying agent
appointed by the Company), 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 10.01) and (ii) the time of book-entry transfer or the delivery of such Note to the Trustee (or other paying agent appointed by the Company)
by the Holder thereof in the manner required by Section 10.01 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 Trustee 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. 

  
 62 








 (b) If by 11:00 a.m. New York City time, on the Fundamental Change Repurchase Date, the Trustee
(or other paying agent appointed by the Company) holds money sufficient to make payment on all the Notes or portions thereof that are to be repurchased on such Fundamental Change Repurchase 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 (whether or not book-entry transfer of the Notes has been made or the
Notes have been delivered to the Trustee or paying agent) and (iii) all other rights of the Holders of such Notes will terminate (other than the right to receive the Fundamental Change Repurchase Price and, if 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, accrued and unpaid interest payable to the Holders as of such Regular Record Date). 

(c) Upon surrender of a Note that is to be repurchased in part pursuant to Section 10.01, 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. 

Section 10.04. Covenant to Comply with Applicable Laws Upon Repurchase of Notes. In connection with any repurchase offer, the
Company will, if required: 
 (a) comply with 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 10 to be exercised in the time and in the manner
specified in this Article 10. 
 To the extent that, as a result of a change in law occurring after the date hereof, the provisions of any
securities law or regulations conflict with the provisions of the Indenture relating to the Company’s obligation to purchase the Notes upon the occurrence of a Fundamental Change, the Company will comply with the applicable securities law and
regulations and will not be deemed to have breached the Company’s obligations under such provisions of the Indenture by virtue of such conflict. 

ARTICLE 11 

OPTIONAL REDEMPTION 

Section 11.01. Applicability of Article 3 of the Base Indenture. Article 3 of the Base Indenture shall not apply to the Notes.
Instead the provisions set forth in this Article 11 shall, with respect to the Notes, supersede in their entirety Article 3 of the Base Indenture, and all references in the Base Indenture to Article 3 thereof and the provisions therein, as the case
may be, shall, with respect to the Notes, be deemed to be references to this Article 11 or the applicable provisions set forth in this Article 11, respectively. 

  
 63 








 Section 11.02. Optional Redemption. No sinking fund is provided for the Notes. The
Notes shall not be redeemable by the Company prior to November 6, 2020. On or after November 6, 2020, the Company may redeem (an “Optional Redemption”) for cash all or any portion of the Notes, at the Redemption Price, if
the Last Reported Sale Price of the Common Stock has been at least 130% of the Conversion Price then in effect for at least 20 Trading Days (whether or not consecutive), including the Trading Day immediately preceding the date on which the Company
provides a Redemption Notice, during any 30 consecutive Trading Day period ending on, and including, the Trading Day immediately preceding the date on which the Company provides the Redemption Notice in accordance with Section 11.03. 

Section 11.03. Notice of Optional Redemption; Selection of Notes. (a) In case the Company exercises its Optional Redemption
right to redeem all or, as the case may be, any part of the Notes pursuant to Section 11.02, it shall fix a date for redemption (each, a “Redemption Date”) and it or, at its written request received by the Trustee not less than 50
Scheduled Trading Days prior to the Redemption Date (or such shorter period of time as may be acceptable to the Trustee), the Trustee, in the name of and at the expense of the Company, shall deliver or cause to be delivered a notice of such Optional
Redemption (a “Redemption Notice”) not less than 45 nor more than 60 Scheduled Trading Day prior to the Redemption Date to each Holder of Notes so to be redeemed as a whole or in part; provided, however, that, if the
Company shall give such notice, it shall also give written notice of the Redemption Date to the Trustee. The Redemption Date must be a Business Day, and the Company may not specify a Redemption Date that falls on or after the 41st Scheduled Trading
Day immediately preceding the Maturity Date. 
 (b) The Redemption Notice, if delivered in the manner herein provided, shall be conclusively
presumed to have been duly given, whether or not the Holder receives such notice. In any case, failure to give such Redemption Notice by mail or any defect in the Redemption Notice to the Holder of any Note designated for redemption as a whole or in
part shall not affect the validity of the proceedings for the redemption of any other Note. 
 (c) Each Redemption Notice shall specify:

 (i) the Redemption Date; 

(ii) the Redemption Price; 

(iii) that on the Redemption Date, the Redemption Price will become due and payable upon each Note to be redeemed, and that
interest thereon, if any, shall cease to accrue on and after the Redemption Date; 
 (iv) the place or places where such
Notes are to be surrendered for payment of the Redemption Price; 

  
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 (v) that Holders may surrender their Notes for conversion at any time prior to
the close of business on the Scheduled Trading Day immediately preceding the Redemption Date; 
 (vi) the procedures a
converting Holder must follow to convert its Notes and the Settlement Method and Specified Cash Amount, if applicable; 

(vii) the Conversion Rate and, if applicable, the number of Additional Shares added to the Conversion Rate in accordance with
Section 9.03; 
 (viii) the CUSIP, ISIN or other similar numbers, if any, assigned to such Notes; and 

(ix) in case any Note is to be redeemed in part only, the portion of the principal amount thereof to be redeemed and on and
after the Redemption Date, upon surrender of such Note, a new Note in principal amount equal to the unredeemed portion thereof shall be issued. 
 A
Redemption Notice shall be irrevocable. 
 If fewer than all of the outstanding Notes are to be redeemed, and the Notes are Global Notes,
the Notes to be redeemed will be selected by the Depositary in accordance with the Applicable Procedures. If the Notes to be redeemed are not Global Notes then held by the Depositary, the Notes to be redeemed will be selected by the Trustee by a
method that is similar to the selection procedures the Depositary would have applied if the Notes had been Global Notes. 

Section 11.04. Payment of Notes Called for Redemption. (a) If any Redemption Notice has been given in respect of the Notes in
accordance with Section 11.03, the Notes shall become due and payable on the Redemption Date at the place or places stated in the Redemption Notice and at the applicable Redemption Price. On presentation and surrender of the Notes at the place or
places stated in the Redemption Notice, the Notes shall be paid and redeemed by the Company at the applicable Redemption Price. 
 (b) Prior
to the open of business on the Redemption Date, the Company shall deposit with the paying agent or, if the Company or a Subsidiary of the Company is acting as the paying agent, shall segregate and hold in trust as provided in Section 7.05 of
the Base Indenture an amount of cash (in immediately available funds if deposited on the Redemption Date), sufficient to pay the Redemption Price of all of the Notes to be redeemed on such Redemption Date. Subject to receipt of funds by the paying
agent, payment for the Notes to be redeemed shall be made on the Redemption Date for such Notes. 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 Redemption
Price. 
 Section 11.05. Restrictions on Redemption. The Company may not redeem any Notes on any date if the principal amount of
the Notes has been accelerated in accordance with the terms of the Indenture, and such acceleration has not been rescinded, on or prior to the Redemption Date (except in the case of an acceleration resulting from a Default by the Company in the
payment of the Redemption Price with respect to such Notes). 

  
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 ARTICLE 12 

CONSOLIDATION, MERGER AND SALE OF ASSETS 

Section 12.01. Applicability of Article 5 of the Base Indenture. Article 10 of the Base Indenture shall not apply to the
Notes. Instead the provisions set forth in this Article 12 shall, with respect to the Notes, supersede in their entirety Article 10 of the Base Indenture, and all references in the Base Indenture to Article 10 thereof and the provisions therein, as
the case may be, shall, with respect to the Notes, be deemed to be references to this Article 12 or the applicable provisions set forth in this Article 12, respectively. 

Section 12.02. When Company May Merge, Etc. Subject to the provisions of Section 12.03, the Company shall not consolidate
with or merge with or into, or sell, convey, transfer or lease all or substantially all of its properties and assets 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 the Indenture; and 
 (b) immediately after giving effect to such transaction, no Default or Event of Default
shall have occurred and be continuing under the Indenture. 
 For purposes of this Section 12.02, the sale, conveyance, transfer or lease of
all or substantially all of the properties and assets of one or more Subsidiaries of the Company to another Person, which properties and assets, if held by the Company instead of such Subsidiaries, would constitute all or substantially all of the
properties and assets of the Company on a consolidated basis, shall be deemed to be the sale, conveyance, transfer or lease of all or substantially all of the properties and assets of the Company to another Person. 

Section 12.03. 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 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 the 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 Company’s properties and assets, shall be substituted for the Company, with the same
effect as if it had been named herein as the party of the first part. 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  

  
 66 








 
the order of such Successor Company instead of the Company and subject to all the terms, conditions and limitations in the 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 an Officer 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 the Indenture as the Notes theretofore or thereafter issued in accordance with the terms of the 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 12 the Person named as the
“Company” in the first paragraph of this Supplemental Indenture (or any successor that shall thereafter have become such in the manner prescribed in this Article 12) 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 the Indenture and the Notes. 

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 12.04. Opinion of Counsel to Be Given to
Trustee. If the Successor Company is not the Company, 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 and, if a supplemental indenture is required in connection with such transaction, such supplemental indenture, complies with the provisions of
this Article 12. 
 ARTICLE 13 

MISCELLANEOUS PROVISIONS 

Section 13.01. Governing Law; Jurisdiction. THIS SUPPLEMENTAL INDENTURE AND EACH NOTE, AND ANY CLAIM, CONTROVERSY OR
DISPUTE ARISING UNDER OR RELATED TO THIS SUPPLEMENTAL 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 Supplemental 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. 

  
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 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 Supplemental 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 13.02. 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 THE INDENTURE, THE NOTES OR THE TRANSACTIONS CONTEMPLATED HEREBY. The
second paragraph of Section 13.05 of the Base Indenture shall, with respect to the Notes, be superseded in its entirety by this Section 13.02. 

Section 13.03. Legal Holidays. In any case where any Interest Payment Date, any Redemption 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 13.08 of the Base Indenture shall, with respect to the Notes, be superseded in its entirety by this Section 13.03, and any reference in the Base Indenture to such Section 13.08 shall,
with respect to the Notes, be deemed to refer instead to this Section 13.03.  
 Section 13.04. No Security Interest
Created. Nothing in the 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 13.05. Benefits of Indenture. Nothing in the Indenture or in the Notes, expressed or
implied, shall give to any Person, other than the Holders (or, with respect to the second and third paragraphs of Section 2.05(d), beneficial owners of the Notes), the parties hereto, any paying agent, any Conversion Agent, any Authenticating Agent,
any Security Registrar and their successors hereunder, any benefit or any legal or equitable right, remedy or claim under the Indenture. 

Section 13.06. Table of Contents, Headings, Etc. The table of contents and the titles and headings of the Articles and
Sections of this Supplemental 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 13.07. Severability. In case any one or more of the provisions contained in this Supplemental Indenture or in the
Notes shall for any reason be held to be invalid, illegal or unenforceable in any respect, such invalidity, illegality or unenforceability shall not affect any other provisions of this Supplemental Indenture or of such Notes, but this Supplemental
Indenture and such Notes shall be construed as if such invalid or illegal or unenforceable provision had never been contained herein or therein. 

  
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 Section 13.08. Multiple Originals. This Supplemental 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 Supplemental Indenture and of signature pages by facsimile or PDF
transmission shall constitute effective execution and delivery of this Supplemental Indenture as to the parties hereto and may be used in lieu of the original Supplemental 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 13.09. Calculations.
Except as otherwise provided herein, the Company shall be responsible for making all calculations called for under the Notes and the Trustee, acting in any capacity under the Indenture, shall have no liability or responsibility for any such
calculations or information underlying such calculations. These calculations include, but are not limited to, determinations of the Stock Price, 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 shall forward the Company’s calculations to any Holder of Notes upon the request of that Holder at the sole cost and expense of the Company. 

Section 13.10. Ratification of Base Indenture. Except as amended hereby with respect to the Notes, the Base Indenture, as
amended and supplemented by this Supplemental Indenture, is in all respects ratified and confirmed, and this Supplemental Indenture shall be deemed part of the Base Indenture in the manner and to the extent herein and therein provided. 

Section 13.11. Delivery of Notices. 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 send 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 sent in the manner provided above, it is duly given, whether or not the addressee receives it. 

[Remainder of page intentionally left blank] 

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

					
	EVERBRIDGE, INC.
		
	By:	 	 /s/ Elliot Mark

		 	Name:	 	Elliot Mark
		 	Title:	 	Secretary


  

					
	U.S. BANK NATIONAL ASSOCIATION, as Trustee
		
	By:	 	 /s/ Richard Prokosch

		 	Name:	 	Richard Prokosch
		 	Title:	 	Vice President









 EXHIBIT A 

[FORM OF FACE OF 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. 

  
 A-1 








 EVERBRIDGE, INC. 

1.50% Convertible Senior Note due 2022 
 No.
[    ]
                                         
                                         
                  [Initially]1 $[        ] 

CUSIP No. [                    ] 

Everbridge, 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.]2
[                    ]3, or registered assigns, the principal sum [as set forth in the
“Schedule of Exchanges of Notes” attached hereto]4 [of $[        ]]5, which amount, taken
together with the principal amounts of all other outstanding Notes, shall not, unless permitted by the Indenture, exceed $115,000,000 in aggregate at any time, in accordance with the rules and the Applicable Procedures of the Depositary, on
November 1, 2022, and interest thereon as set forth below. 
 This Note shall bear interest at the rate of 1.50% per year from
November 20, 2017 or from the most recent date to which interest had been paid or duly provided for to, but excluding, the next scheduled Interest Payment Date until November 1, 2022. Interest is payable semi-annually in arrears on
May 1 and November 1, commencing on May 1, 2018, to Holders of record at the close of business on the preceding April 15 or October 15 (whether or not such day is a Business Day), respectively. Additional Interest will be
payable as set forth in Section 5.04 of the within-mentioned Supplemental 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 5.04, 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 in accordance with Section 2.04(c) of the within-mentioned Supplemental
Indenture. 
 The Company shall 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 the principal of any Notes (other than Notes that are

  

	1 	Include if a global note. 


	2 	Include if a global note. 


	3 	Include if a physical note. 


	4 	Include if a global note. 


	5 	 Include if a physical note. 



  
 A-2 








 
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 Security Registrar in respect of the
Notes and its agency in the Borough of Manhattan, The City of New York, as a place where Notes may be presented for payment or for registration of transfer and exchange. 

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 or by facsimile by the Trustee or a duly authorized Authenticating Agent under the Indenture. 
 [Remainder of page
intentionally left blank] 

  
 A-3 








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

 

			
	EVERBRIDGE, INC.
		
	By:	 	
                     
                                         
                   

		 	Name:
		 	Title:


  

			
	Dated:
	
	TRUSTEE’S CERTIFICATE OF AUTHENTICATION
	
	 U.S. BANK NATIONAL ASSOCIATION
 as
Trustee, certifies that this is one of the Notes described in the within-named Indenture.

		
	By:	 	
                     
                                         
               

		 	Authorized Signatory


  
 A-4 








 [FORM OF REVERSE OF NOTE] 

EVERBRIDGE, INC. 
 1.50%
Convertible Senior Note due 2022 
 This Note is one of a duly authorized issue of Notes of the Company, designated as its 1.50%
Convertible Senior Notes due 2022 (the “Notes”), limited to the aggregate principal amount of $115,000,000, all issued or to be issued under and pursuant to an Indenture dated as of November 20, 2017 (the “Base
Indenture”), as amended and supplemented by the First Supplemental Indenture dated as of November 20, 2017 (herein called the “Supplemental Indenture”; the Base Indenture, as amended and supplemented by the
Supplemental Indenture, and as it may be further amended or supplemented from time to time, the “Indenture”), by and between the Company and U.S. Bank 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 (if applicable), the Redemption Price on any Redemption Date (if applicable) 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 shall 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. 
 Each
Holder shall have the right to receive payment or delivery, as the case may be, of (x) the principal (including the Redemption Price and 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 at the place, at the respective times, at the rate and in the lawful money and/or shares of Common Stock, as the case may be, herein prescribed. 

  
 A-5 








 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 designated by the Company for such purpose under the Indenture, 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 shall not be redeemable at the Company’s option prior to November 6, 2020. On or after November 6, 2020, the
Notes may be redeemed by the Company, subject to the satisfaction of certain conditions and in accordance with the terms specified in the Indenture. No sinking fund is provided for the Notes. 

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-6 








 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 = Note
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-7 








 SCHEDULE A6 

SCHEDULE OF EXCHANGES OF NOTES 

EVERBRIDGE, INC. 
 1.50%
Convertible Senior Notes due 2022 
 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 Note

Custodian

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  

		 		 		 		 	
	  
	 	  
	 	  
	 	  
	 	  


  

	6 	Include if a global note. 


  
 A-8 








 ATTACHMENT 1 

[FORM OF NOTICE OF CONVERSION] 
  

	To:	Everbridge, Inc. 

 25 Corporate Drive, Suite 400 

Burlington, Massachusetts 
 U.S.
Bank National Association, as Conversion Agent 
 West Side Flats, St Paul 

60 Livingston Ave, Saint Paul, MN 55107 | EP-MN-WS3C 

The undersigned registered owner of this Note hereby exercises the option to convert this Note, or the portion hereof (that is $1,000 in
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, as applicable, 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 of Common Stock, 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 9.02(d) and Section 9.02(e) of the Supplemental 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	 		 	


  
 1 









			
	 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.
	 	
		
	 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


  
 2 








 ATTACHMENT 2 

[FORM OF FUNDAMENTAL CHANGE REPURCHASE NOTICE] 
  

	To:	Everbridge, Inc. 

 25 Corporate Drive, Suite 400 

Burlington, Massachusetts 
 U.S.
Bank National Association, as Paying Agent 
 West Side Flats, St Paul 

60 Livingston Ave, Saint Paul, MN 55107 | EP-MN-WS3C 

The undersigned registered owner of this Note hereby acknowledges receipt of a notice from Everbridge, 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 10.01 of the
Supplemental 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 repurchased (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.


  
 1 








 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. 

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 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. 

  
 1