Document:

EX-4.1

 Exhibit 4.1 

EXECUTION VERSION 
  

 
  

NUANCE COMMUNICATIONS, INC. 

1.50% Senior Convertible Debentures Due 2035 

INDENTURE 
 Dated as of
June 16, 2015 
 U.S. Bank National Association 

as Trustee 
  

 
  

 TABLE OF CONTENTS 

 
  

 

							
	 	 	 	  	PAGE	 
	
	ARTICLE 1	  
	DEFINITIONS AND INCORPORATION BY REFERENCE	  
			
	 Section 1.01.
	 	 Definitions
	  	 	1	  
	 Section 1.02.
	 	 Incorporation by Reference of Trust Indenture Act
	  	 	11	  
	 Section 1.03.
	 	 Rules of Construction
	  	 	11	  
	 Section 1.04.
	 	 References to Interest
	  	 	12	  
	
	ARTICLE 2	  
	THE SECURITIES	  
			
	 Section 2.01.
	 	 Designation, Amount and Issuance of Securities
	  	 	12	  
	 Section 2.02.
	 	 Form of the Securities
	  	 	12	  
	 Section 2.03.
	 	 Date and Denomination of Securities; Payment at Maturity; Payment of Interest; Contingent Interest
	  	 	13	  
	 Section 2.04.
	 	 Execution and Authentication
	  	 	15	  
	 Section 2.05.
	 	 Registrar, Paying Agent and Conversion Agent
	  	 	16	  
	 Section 2.06.
	 	 Paying Agent to Hold Money in Trust
	  	 	17	  
	 Section 2.07.
	 	 Securityholder Lists
	  	 	17	  
	 Section 2.08.
	 	 Exchange and Registration of Transfer of Securities
	  	 	17	  
	 Section 2.09.
	 	 Global Securities
	  	 	18	  
	 Section 2.10.
	 	 Global Certificates
	  	 	20	  
	 Section 2.11.
	 	 Responsibilities and Obligations of the Trustee
	  	 	20	  
	 Section 2.12.
	 	 Replacement Securities
	  	 	21	  
	 Section 2.13.
	 	 Outstanding Securities
	  	 	22	  
	 Section 2.14.
	 	 Temporary Securities
	  	 	22	  
	 Section 2.15.
	 	 Cancellation
	  	 	23	  
	 Section 2.16.
	 	 CUSIP and ISIN Numbers
	  	 	23	  
	 Section 2.17.
	 	 Additional Securities; Repurchases
	  	 	23	  
	
	ARTICLE 3	  
	REDEMPTION AND REPURCHASE OF SECURITIES	  
			
	 Section 3.01.
	 	 Optional Redemption of Securities
	  	 	24	  
	 Section 3.02.
	 	 Notice of Optional Redemption; Selection of Securities to be Redeemed
	  	 	24	  
	 Section 3.03.
	 	 Payment of Securities Called for Redemption
	  	 	26	  
	 Section 3.04.
	 	 Repurchase at Option of Holders Upon a Fundamental Change
	  	 	27	  

  
 i 

							
	 Section 3.05.
		 Repurchase of Securities by the Company at the Option of Holders
		 	28	  
	 Section 3.06.
		 Company Repurchase Notice; Tender Offer Compliance
		 	29	  
	 Section 3.07.
		 Effect of Repurchase Notice; Withdrawal
		 	31	  
	 Section 3.08.
		 Deposit of Repurchase Price or Fundamental Change Repurchase Price
		 	32	  
	 Section 3.09.
		 Securities Repurchased in Part
		 	33	  
	
	ARTICLE 4	  
	COVENANTS	  
			
	 Section 4.01.
		 Payment of Securities
		 	33	  
	 Section 4.02.
		 Maintenance of Office or Agency
		 	33	  
	 Section 4.03.
		 Annual Reports
		 	34	  
	 Section 4.04.
		 Existence
		 	34	  
	 Section 4.05.
		 Payment of Taxes and Other Claims
		 	34	  
	 Section 4.06.
		 Compliance Certificate
		 	35	  
	 Section 4.07.
		 Default Additional Interest Notice
		 	35	  
	 Section 4.08.
		 Tax Treatment of the Securities
		 	35	  
	
	ARTICLE 5	  
	SUCCESSOR COMPANY	  
			
	 Section 5.01.
		 When Company May Merge or Transfer Assets
		 	36	  
	 Section 5.02.
		 Successor to be Substituted
		 	36	  
	 Section 5.03.
		 Opinion of Counsel to be Given to Trustee
		 	37	  
	
	ARTICLE 6	  
	DEFAULTS AND REMEDIES	  
			
	 Section 6.01.
		 Events of Default
		 	37	  
	 Section 6.02.
		 Acceleration
		 	39	  
	 Section 6.03.
		 Other Remedies
		 	40	  
	 Section 6.04.
		 Waiver of Defaults and Events of Default
		 	40	  
	 Section 6.05.
		 Control by Majority
		 	40	  
	 Section 6.06.
		 Limitation on Suits
		 	41	  
	 Section 6.07.
		 Rights of Securityholders to Receive Payment
		 	41	  
	 Section 6.08.
		 Collection Suit by Trustee
		 	41	  
	 Section 6.09.
		 Trustee May File Proofs of Claim
		 	42	  
	 Section 6.10.
		 Priorities
		 	42	  
	 Section 6.11.
		 Undertaking for Costs
		 	42	  
	 Section 6.12.
		 Waiver of Stay, Extension or Usury Laws
		 	43	  
	 Section 6.13.
		 Alternative Remedy for Failure to Comply with Reporting Obligations in the Indenture and TIA
		 	43	  

  
 ii 

							
	ARTICLE 7	  
	TRUSTEE	  
			
	 Section 7.01.
		 Duties of Trustee
		 	44	  
	 Section 7.02.
		 Rights of Trustee
		 	45	  
	 Section 7.03.
		 Individual Rights of Trustee
		 	45	  
	 Section 7.04.
		 Trustee’s Disclaimer
		 	46	  
	 Section 7.05.
		 Notice of Defaults
		 	46	  
	 Section 7.06.
		 Reports by Trustee to Securityholders
		 	46	  
	 Section 7.07.
		 Compensation and Indemnity
		 	46	  
	 Section 7.08.
		 Replacement of Trustee
		 	47	  
	 Section 7.09.
		 Successor Trustee by Merger
		 	48	  
	 Section 7.10.
		 Eligibility; Disqualification
		 	48	  
	 Section 7.11.
		 Preferential Collection of Claims Against Company
		 	49	  
	
	ARTICLE 8	  
	DISCHARGE OF INDENTURE	  
			
	 Section 8.01.
		 Discharge of Liability on Securities
		 	49	  
	 Section 8.02.
		 Application of Trust Money
		 	49	  
	 Section 8.03.
		 Repayment to Company
		 	50	  
	 Section 8.04.
		 Reinstatement
		 	50	  
	
	ARTICLE 9	  
	AMENDMENTS	  
			
	 Section 9.01.
		 Without Consent of Securityholders
		 	50	  
	 Section 9.02.
		 With Consent of Securityholders
		 	51	  
	 Section 9.03.
		 Compliance with Trust Indenture Act
		 	52	  
	 Section 9.04.
		 Revocation and Effect of Consents and Waivers
		 	52	  
	 Section 9.05.
		 Notation on or Exchange of Securities
		 	53	  
	 Section 9.06.
		 Trustee to Sign Amendments
		 	53	  
	
	ARTICLE 10	  
	CONVERSION OF SECURITIES	  
			
	 Section 10.01.
		 Right to Convert
		 	53	  
	 Section 10.02.
		 Exercise of Conversion Right; Issuance of Common Stock on Conversion; No Adjustment for Interest or Dividends
		 	56	  
	 Section 10.03.
		 Cash Payments in Lieu of Fractional Shares
		 	57	  
	 Section 10.04.
		 Conversion Rate
		 	58	  
	 Section 10.05.
		 Adjustment to Conversion Rate upon a Non-Stock Change of Control
		 	58	  
	 Section 10.06.
		 Adjustment of Conversion Rate
		 	60	  
	 Section 10.07.
		 Effect of Reclassification, Consolidation, Merger or Sale
		 	68	  
	 Section 10.08.
		 Taxes on Shares Issued
		 	69	  

  
 iii 

							
	 Section 10.09.
		 Reservation of Shares, Shares to be Fully Paid; Compliance with Governmental Requirements; Listing of Common Stock
		 	69	  
	 Section 10.10.
		 Responsibility of Trustee
		 	70	  
	 Section 10.11.
		 Notice to Holders Prior to Certain Actions
		 	71	  
	 Section 10.12.
		 Stockholder Rights Plans
		 	72	  
	 Section 10.13.
		 Settlement Upon Conversion; Cash Percentage Election
		 	72	  
	
	ARTICLE 11	  
	MISCELLANEOUS	  
			
	 Section 11.01.
		 Trust Indenture Act Controls
		 	73	  
	 Section 11.02.
		 Notices
		 	73	  
	 Section 11.03.
		 Communication by Securityholders with Other Securityholders
		 	74	  
	 Section 11.04.
		 Certificate and Opinion as to Conditions Precedent
		 	74	  
	 Section 11.05.
		 Statements Required in Certificate or Opinion
		 	74	  
	 Section 11.06.
		 When Securities Disregarded
		 	75	  
	 Section 11.07.
		 Rules by Trustee, Paying Agent and Registrar
		 	75	  
	 Section 11.08.
		 Legal Holidays
		 	75	  
	 Section 11.09.
		 Governing Law
		 	75	  
	 Section 11.10.
		 No Recourse Against Others
		 	75	  
	 Section 11.11.
		 Successors
		 	76	  
	 Section 11.12.
		 Multiple Originals
		 	76	  
	 Section 11.13.
		 Table of Contents; Headings
		 	76	  
	 Section 11.14.
		 Calculations in Respect of the Securities
		 	76	  
		
	Exhibit A – Form of Security				

  
 iv 

 INDENTURE dated as of June 16, 2015 between NUANCE COMMUNICATIONS, INC., a
Delaware corporation (the “Company”), and U.S. BANK NATIONAL ASSOCIATION, a national banking association, as trustee (the “Trustee”). 

WHEREAS, the Company has duly authorized the creation of an issue of its 1.50% Senior Convertible Debentures Due 2035
(the “Securities”), having the terms, tenor, amount and other provisions hereinafter set forth, and, to provide therefor, the Company has duly authorized the execution and delivery of this Indenture; and 

WHEREAS, all things necessary to make the Securities, when the Securities are duly executed by the Company and authenticated
and delivered hereunder and duly issued by the Company, the valid obligations of the Company, and to make this Indenture a valid and binding agreement of the Company, in accordance with their and its terms, have been done and performed, and the
execution of this Indenture and the issue hereunder of the Securities have in all respects been duly authorized, 
 NOW,
THEREFORE, THIS INDENTURE WITNESSETH: 
 For and in consideration of the premises and the purchase of the Securities by the
Holders thereof, it is mutually covenanted and agreed, for the equal and proportionate benefit of all Holders of the Securities, as follows: 

ARTICLE 1 

DEFINITIONS AND INCORPORATION BY REFERENCE 

Section 1.01. Definitions. 

“Additional Interest Notice” has the meaning specified in Section 4.07. 

“Additional Shares” has the meaning specified in Section 10.05. 

“Additional Securities” has the meaning specified in Section 2.17. 

“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 Person means the power to direct 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. 

“Agent Members” has the meaning specified in Section 2.09. 

  
 1 

 “Applicable Consideration” has the meaning specified in
Section 10.07. 
 “Bankruptcy Law” has the meaning specified in Section 6.01. 

“Board of Directors” means the Board of Directors of the Company or any committee thereof duly
authorized to act on behalf of such board. 
 “Business Day” means each day which is not a
Legal Holiday. 
 “Capital Stock” of any Person means any and all shares, interests, rights to
purchase, warrants, options, participations or other equivalents of or interests in (however designated) equity of such Person, including any preferred stock, but excluding any debt securities convertible into such equity. 

“Cash Percentage” has the meaning specified in Section 10.13(b). 

“Closing Date” means the date of this Indenture. 

“Closing Sale Price” of any share of Common Stock or any other security on any Trading Day means the
closing sale price of such security (or, if no closing sale price is reported, the average of the closing bid and closing ask prices or, if more than one in either case, the average of the average closing bid and the average closing ask prices) on
such date as reported in composite transactions for the principal U.S. securities exchange on which the shares of Common Stock are traded or, if the shares of Common Stock are not listed on a U.S. national or regional securities exchange, as
reported in the over-the-counter market by OTC Markets Group or other similar organization. In the absence of such a quotation, the Closing Sale Price shall be determined by a nationally recognized securities dealer retained by the Company for that
purpose. The Closing Sale Price shall be determined without reference to extended or after hours trading. 

“Code” means the Internal Revenue Code of 1986, as amended. 

“Common Stock” means the common stock, par value $0.001 of the Company, subject to Section 10.07.

 “Company” means the party named as such in this Indenture until a successor replaces it and,
thereafter, means the successor and, for purposes of any provision contained herein and required by the TIA, each other obligor on the indenture securities. 

“Company Repurchase Notice” has the meaning specified in Section 3.06. 

“Contingent Debt Regulations” has the meaning specified in Section 4.08. 

  
 2 

 “Contingent Interest” has the meaning specified in the second
paragraph of Section 2.03. 
 “Contingent Interest Trigger” means $1,200 per $1,000 principal amount
of Securities. 
 “Conversion Agent” has the meaning specified in Section 2.05. 

“Conversion Date” has the meaning specified in Section 10.02. 

“Conversion Notice” has the meaning specified in Section 10.02. 

“Conversion Observation Period” means, with respect to any Securities, the 20 consecutive Trading Day
period beginning: (1) with respect to a Conversion Date occurring after the 22nd Scheduled Trading Day immediately preceding the Maturity Date, on such 22nd Scheduled Trading Day; (2) with respect to a Conversion Date occurring after the
Company’s issuance of a notice of redemption and on or prior to the Business Day immediately preceding the corresponding Redemption Date, on the 22nd Scheduled Trading Day immediately preceding such Redemption Date; and (3) in all other
cases, on the third Scheduled Trading Day following the related Conversion Date. 
 “Conversion
Price” on any day will equal $1,000 divided by the Conversion Rate in effect on that day. 

“Conversion Rate” means initially 42.9978 shares of Common Stock per $1,000 principal amount of
Securities, subject to adjustments as set forth herein. 
 “Corporate Trust Office” or other
similar term, means the designated office of the Trustee at which at any particular time its corporate trust business as it relates to this Indenture shall be administered, which office is, at the date as of which this Indenture is dated, located at
225 Asylum Street, Hartford, CT 06103, Attention: Arthur L. Blakeslee, or at any other time at such other address as the Trustee may designate from time to time by notice to the Company. 

“Current Market Price” on any date means the average of the daily Closing Sale Prices per share of Common
Stock for the ten consecutive Trading Days immediately prior to such date (the “day in question”); provided that if the Ex-Date for any event (other than the issuance or distribution requiring such computation) that requires
an adjustment to the Conversion Rate pursuant to Section 10.06 occurs during such ten consecutive Trading Days, the Closing Sale Price for each Trading Day prior to the Ex-Date for such other event shall be adjusted by dividing such Closing
Sale Price by the same fraction by which the Conversion Rate is so required to be multiplied as a result of such other event. Notwithstanding the foregoing, whenever successive adjustments to the Conversion Rate are called for pursuant to
Section 10.06, such adjustments shall 

  
 3 

 
be made to the Current Market Price as may be necessary or appropriate to effectuate the intent of Section 10.06 and to avoid unjust or inequitable results as determined in good faith by the
Board of Directors. 
 “Custodian” has the meaning specified in Section 6.01. 

“Daily Conversion Value” means, for any Trading Day during the Conversion Observation Period,
one-twentieth (1/20) of (1) the applicable Conversion Rate multiplied by (2) the VWAP Price of the Common Stock (or the consideration into which the Common Stock has been converted in connection with transactions
to which Section 10.07 is applicable) on that day. For the purposes of determining the Daily Conversion Value the following provisions shall apply: (i) if the Applicable Consideration includes securities for which the price can be
determined in a manner contemplated by the definition of “VWAP Price,” then the value of such securities on such Trading Day shall be determined in accordance with the principles set forth in such definition; (ii) if the Applicable
Consideration includes other property (other than securities as to which clause (i) applies or cash), then the value of such property on such Trading Day shall be the fair market value of such property as determined by the Board of Directors in
good faith; and (iii) if the Applicable Consideration includes cash, then the value of such cash shall be the amount thereof. 

“Daily Settlement Amount,” for each $1,000 principal amount of Securities, for each of the 20 Trading
Days during the Conversion Observation Period, shall consist of: 
 (i) cash equal to the lesser of $50 and the Daily
Conversion Value; and 
 (ii) to the extent the Daily Conversion Value exceeds $50, a number of shares of Common Stock
(the “Daily Share Amount”) equal to, (A) the difference between the Daily Conversion Value and $50, divided by (B) the VWAP Price of the Common Stock for such day, appropriately adjusted to reflect
stock splits, stock dividends, combinations or similar events occurring during the Conversion Observation Period, subject to the Company’s right to deliver a percentage of the Daily Share Amount in cash in accordance with Section 10.13(b).

 “Default” means any event which is, or after notice or passage of time or both would be, an
Event of Default. 
 “Default Additional Interest” has the meaning specified in Section
6.13. 
 “Depositary” means the clearing agency registered under the Exchange Act that is
designated to act as the depositary for the Global Securities. DTC shall be the initial Depositary, until a successor shall have been appointed and become such pursuant to the applicable provisions of this Indenture, and thereafter,
“Depositary” shall mean or include such successor. 

  
 4 

 “Determination Date” has the meaning specified in Section
10.06(k). 
 “Distributed Assets” has the meaning specified in Section 10.06(d). 

“Distribution Notice” has the meaning specified in Section 10.01(c). 

“DTC” means The Depository Trust Company. 

“Effective Date” has the meaning specified in Section 10.05. 

“Event of Default” has the meaning specified in Section 6.01. 

“Ex-Date,” when used with respect to any issuance or distribution, means the first date on which the
shares of Common Stock, trade regular way on the relevant exchange or in the relevant market from which the Closing Sale Price was obtained without the right to receive such issuance or distribution. 

“Exchange Act” means the Securities Exchange Act of 1934, as amended. 

“Exchange Agreements” means one or more exchange agreements, dated on or about June 10, 2015,
among the Company and certain holders of the Company’s 2.75% Senior Convertible Debentures due 2031, providing for the exchange of Securities for such debentures. 

“Fair Market Value” means the amount which a willing buyer would pay a willing seller in an
arm’s-length transaction. 
 “Fiscal Quarter” means, with respect to the Company, a
fiscal quarter of the Company. The Company shall confirm the ending dates of its fiscal quarters for the current fiscal year to the Trustee upon the Trustee’s request. 

“Free Trade Date” means the one-year anniversary of the Last Original Issuance Date of the
Securities. 
 “Fundamental Change” means the occurrence of any of the following after the
original issuance of the Securities: 
 (a) the consummation of any transaction (including, without limitation, any
merger or consolidation) the result of which is that any “person” or “group” becomes the “beneficial owner” (as these terms are defined in Rule 13d-3 and Rule 13d-5 under the Exchange Act), directly or indirectly, of
more than 50% of the Company’s Capital Stock that is at the time entitled to vote by the holders thereof in the election of the Board of Directors (or comparable body); or 

  
 5 

 (b) the adoption of a plan relating to the liquidation or dissolution of the
Company; or 
 (c) the consolidation or merger of the Company with or into any Person (other than a subsidiary of the
Company), or the sale, lease, transfer, conveyance or other disposition, in one or a series of related transactions, of all or substantially all of the Company’s assets and those of its subsidiaries taken as a whole to any “person”
(as this term is used in Section 13(d)(3) of the Exchange Act) (other than to one or more of the Company’s Subsidiaries), other than: 

(i) any transaction: 

(A) that does not result in any reclassification, conversion, exchange or cancellation of outstanding shares of the
Company’s Capital Stock; and 
 (B) pursuant to which the holders of 50% or more of the total voting power of all
shares of the Company’s Capital Stock entitled to vote generally in elections of the Board of Directors immediately prior to such transaction have the right to exercise, directly or indirectly, 50% or more of the total voting power of all
shares of the Capital Stock entitled to vote generally in elections of the directors of the continuing or surviving Person (or any parent thereof) immediately after giving effect to such transaction; or 

(ii) any merger primarily for the purpose of changing the Company’s jurisdiction of incorporation and resulting in a
reclassification, conversion or exchange of outstanding shares of Common Stock solely into shares of common stock of the surviving entity; or 

(d) the termination of trading of the Common Stock, which will be deemed to have occurred if the Common Stock or other common
stock into which the Securities are convertible is not listed for trading on a U.S. national securities exchange. 
 However,
a Fundamental Change will be deemed not to have occurred if at least 90% of the consideration in the transaction or transactions (other than cash payments for fractional shares and cash payments made in respect of dissenters’ appraisal rights)
which otherwise would constitute a Fundamental Change under clauses (a) or (c) above consists of shares of common stock traded or to be traded immediately following such transaction on a U.S. national securities exchange and, as a result
of the transaction or transactions, the Applicable Consideration for the Securities consists of such common stock. 

“Fundamental Change Repurchase Date” has the meaning specified in Section 3.04(a). 

  
 6 

 “Fundamental Change Repurchase Notice” has the meaning
specified in Section 3.04(c). 
 “Fundamental Change Repurchase Price” has the meaning
specified in Section 3.04(a). 
 “GAAP” means generally accepted accounting principles in the
United States of America as in effect on the date hereof, including those set forth in (i) the opinions and pronouncements of the Accounting Principles Board of the American Institute of Certified Public Accountants, (ii) statements and
pronouncements of the Financial Accounting Standards Board, (iii) such other statements by such other entity as approved by a significant segment of the accounting profession, and (iv) the rules and regulations of the SEC governing the
inclusion of financial statements (including pro forma financial statements) in periodic reports required to be filed pursuant to Section 13 of the Exchange Act, including opinions and pronouncements in staff accounting bulletins and similar
written statements from the accounting staff of the SEC. 
 “Global Securities” has the
meaning specified in Section 2.02. 
 “Indebtedness” means, with respect to any Person all
indebtedness of such Person for borrowed money. 
 “Indenture” means this Indenture as amended
or supplemented from time to time. 
 “Interest” and “interest” means, when
used with reference to the Securities, any interest payable under the terms of the Securities, including regular interest, Contingent Interest, Default Additional Interest, if any, and defaulted interest. 

“Interest Payment Dates” means the dates specified as such in the form of Security set forth as Exhibit
A hereto. 
 “Interest Record Dates” means the dates specified as such in the form of Security
set forth as Exhibit A hereto. The Interest Record Date for any Interest Payment Date for the Securities shall be the Interest Record Date immediately preceding the applicable Interest Payment Date. 

“Last Original Issuance Date” means the last date of original issuance of the Securities issued
pursuant to Section 2.01. 
 “Legal Holiday” has the meaning specified in Section 11.08.

 “Market Disruption Event” means the occurrence or existence during the one-half hour period ending on
the scheduled close of trading on any Trading Day for the Common Stock of any material suspension or limitation imposed on 

  
 7 

 
trading (by reason of movements in price exceeding limits permitted by The Nasdaq Global Select Market or otherwise) in the Common Stock or in any options, contracts or future contracts relating
to the Common Stock. 
 “Maturity Date” means November 1, 2035. 

“Non-Stock Change of Control” means a transaction described under clause (a), clause (c) or clause
(d) in the definition of Fundamental Change that becomes effective on or prior to November 5, 2021 and, in the case of clause (a) or clause (c), other than pursuant to any transaction in which at least 90% of the consideration for the
Common Stock (other than cash payments for fractional shares and cash payments made in respect of dissenters’ appraisal rights) consists of shares of common stock traded or to be traded immediately following such transaction on a U.S. national
securities exchange and, as a result of such transaction of transactions, the Applicable Consideration for the Securities consists of such common stock. 

“Notice of Default” shall have the meaning specified in Section 6.01. 

“Officer” means the Chairman of the Board, the Chief Executive Officer, the Chief Financial Officer,
the President, any Vice President, the Treasurer, any Assistant Treasurer, the Secretary or any Assistant Secretary of the Company. 

“Officers’ Certificate” means a certificate signed by two Officers. 

“Opinion of Counsel” means a written opinion from legal counsel who is acceptable to the Trustee. The
counsel may be an employee of or counsel to the Company or the Trustee. 
 “Paying Agent” has
the meaning specified in Section 2.05. 
 “Person” means any individual, corporation,
partnership, limited liability company, joint venture, association, joint-stock company, trust, unincorporated organization, government or any agency or political subdivision thereof or any other entity. 

“Physical Securities” means permanent certificated Securities in registered form issued in
denominations of $1,000 principal amount and multiples thereof. 
 “Preferred Stock,” as
applied to the Capital Stock of any Person, means Capital Stock of any class or classes (however designated) that is preferred as to the payment of dividends, or as to the distribution of assets upon any voluntary or involuntary liquidation or
dissolution of such Person, over shares of Capital Stock of any other class of such Person. 

  
 8 

 “Principal” of a Security means the principal of the Security
plus the premium, if any, payable on the Security that is due or overdue or is to become due at the relevant time. 

“Protected Purchaser” has the meaning specified in Section 2.12. 

“Purchased Shares” has the meaning specified in Section 10.06(f). 

“Redemption Date” has the meaning specified in Section 3.01. 

“Redemption Price” has the meaning specified in Section 3.01. 

“Reference Period” has the meaning specified in Section 10.06(d). 

“Register” has the meaning specified in Section 2.05. 

“Registrar” has the meaning specified in Section 2.05. 

“Repurchase Date” has the meaning specified in Section 3.05(a). 

“Repurchase Notice” has the meaning specified in Section 3.05(c). 

“Repurchase Price” has the meaning specified in Section 3.05(a). 

“Scheduled Trading Day” means a day that is scheduled to be a Trading Day on the primary U.S. national or
regional securities exchange or market on which the Common Stock is listed or, if the Common Stock is not listed on a U.S. national or regional securities exchange, on the principal other market on which the Common Stock is then traded. 

“SEC” means the Securities and Exchange Commission. 

“Securities” means any security issued, authenticated and delivered under this Indenture, including any Global
Securities. 
 “Securities Act” means the Securities Act of 1933, as amended, and the rules and regulations
promulgated thereunder, as in effect from time to time. 
 “Securityholder” or “Holder”
means the Person in whose name a Security is registered on the Registrar’s books. 
 “Significant
Subsidiary” means any Subsidiary of a Person that would be a “Significant Subsidiary” of the Person within the meaning of Rule 1-02(w) under Regulation S-X promulgated by the SEC. 

“Spin-Off” has the meaning specified in Section 10.06(d). 

  
 9 

 “Stock Price” has the meaning specified in Section 10.05. 

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

“TIA” or “Trust Indenture Act” means the Trust Indenture Act of 1939 (15 U.S.C. §§
77aaa-77bbbb), as amended, as in effect on the date of this Indenture. 
 “Trading Day” means a day during
which (i) trading in the Common Stock generally occurs, (ii) there is no Market Disruption Event and (iii) a Closing Sale Price for the Common Stock is provided on the principal U.S. national or regional securities exchange on which
the Common Stock is then listed or, if the Common Stock is not listed on a U.S. national or regional securities exchange, on the principal other market on which the Common Stock is then traded. If the Common Stock (or other security for which a
Closing Sale Price must be determined) is not listed or traded, “Trading Day” means a “Business Day.” 

“Trading Price” means, with respect to a Security on any date of determination, the average of the secondary
market bid quotations per $1,000 principal amount of the Securities obtained by the Company or the Trustee at the written direction of the Company for $5,000,000 principal amount of the Securities at approximately 3:30 p.m., New York City time, on
such determination date from two independent nationally recognized securities dealers selected by the Company; provided that if at least two such bids cannot reasonably be obtained, but one such bid can be reasonably obtained, this one bid
will be used. If the Trustee or the Company, as the case may be, cannot reasonably obtain at least one bid for $5,000,000 principal amount of the Securities from a nationally recognized securities dealer or in the Company’s reasonable judgment,
the bid quotations are not indicative of the secondary market value of the Securities, then, (A) for purposes of Section 10.01(a)(viii), the Trading Price of $1,000 principal amount of the Securities will be deemed to be less than 98% of
the applicable Conversion Rate of the Securities multiplied by the Closing Sale Price of Common Stock on such determination date, and (B) for purposes of Section 2.03, the Trading Price per $1,000 principal amount of Securities will
be determined by the Company’s Board of Directors based on a good faith estimate of the fair value of the Securities. 

“Trust Officer” means the Chairman of the Board, the President or any other officer or assistant officer of
the Trustee assigned by the Trustee to administer its corporate trust matters. 

  
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 “Trustee” means the party named as such in this Indenture until
a successor replaces it and, thereafter, means the successor. 
 “Uniform Commercial Code” means the New
York Uniform Commercial Code as in effect from time to time. 
 “VWAP Price” per share of the Common Stock
on any Trading Day means the per share-volume-weighted average price as displayed on Bloomberg (or any successor service) under the heading “Bloomberg VWAP” on page “NUAN <Equity> AQR” in respect of the period from 9:30
a.m. to 4:00 p.m., New York City time, on such Trading Day; or, if such price is not available, the “VWAP Price” means the market value per share of the Common Stock on such day on a volume weighted basis, if possible, as determined
by a nationally recognized investment banking firm retained for this purpose by the Company. The “VWAP Price” shall be determined without regard to after hours trading or any other trading outside of the regular trading session
trading hours. 
 “Wholly Owned Subsidiary” of any Person means a Subsidiary of such Person, all the Capital
Stock of which (other than directors’ qualifying shares) is owned by such Person or another Wholly Owned Subsidiary of such Person. 

Section 1.02. Incorporation by Reference of Trust Indenture Act. This Indenture is subject to the mandatory
provisions of the TIA, which are incorporated by reference in and made a part of this Indenture. The following TIA terms have the following meanings: 

“Commission” means the SEC. 

“indenture securities” means the Securities. 

“indenture security holder” means a Securityholder. 

“indenture to be qualified” means this Indenture. 

“indenture trustee” or “institutional trustee” means the Trustee. 

“obligor” on the indenture securities means the Company and any other obligor on the indenture securities.

 All other TIA terms used in this Indenture that are defined by the TIA, defined by TIA reference to another statute or defined by SEC rule
have the meanings assigned to them by such definitions. 
 Section 1.03. Rules of Construction. Unless the
context otherwise requires: 
 (1) a term has the meaning assigned to it; 

  
 11 

 (2) an accounting term not otherwise defined has the meaning assigned to it in
accordance with GAAP; 
 (3) “or” is not exclusive; 

(4) “including” means including without limitation; and 

(5) words in the singular include the plural and words in the plural include the singular. 

Section 1.04. References to Interest. Unless the context otherwise requires, any reference to interest on, or in
respect of, any Security in this Indenture shall be deemed to include Default Additional Interest if, in such context, Default Additional Interest is, was or would be payable pursuant to Section 6.13, and Contingent Interest, if in such context
Contingent Interest is, was or would be payable pursuant to Section 2.03. Unless the context otherwise requires, any express mention of Default Additional Interest or Contingent Interest in any provision hereof shall not be construed as
excluding Default Additional Interest or Contingent Interest, as the case may be, in those provisions hereof where such express mention is not made. 

ARTICLE 2 
 THE
SECURITIES 
 Section 2.01. Designation, Amount and Issuance of Securities. The Securities
shall be designated as “1.50% Senior Convertible Debentures Due 2035.” The Securities will initially be issued in one or more issuances in the aggregate principal amount not to exceed $263,895,000 pursuant to the Exchange Agreements. The
Company may issue additional securities in accordance with Section 2.17. Upon the execution of this Indenture, or from time to time thereafter, Securities may be executed by the Company and delivered to the Trustee for authentication, and the
Trustee shall thereupon authenticate and deliver Securities upon a written order of the Company, such order signed by an Officer of the Company, without any further action by the Company hereunder. 

Section 2.02. Form of the Securities. The Securities and the Trustee’s certificate of authentication to be
borne by such Securities shall be substantially in the form set forth in Exhibit A hereto. The terms and provisions contained in the form of Securities attached as Exhibit A hereto shall constitute, and are hereby expressly made, a part of this
Indenture and, to the extent applicable, the Company and the Trustee, by their execution and delivery of this Indenture, expressly agree to such terms and provisions and to be bound thereby. 

Any of the Securities may have such letters, numbers or other marks of identification and such notations, legends, endorsements
or changes as the officers executing the same may approve (execution thereof to be conclusive evidence of 

  
 12 

 
such approval) and as are not inconsistent with the provisions of this Indenture, or as may be required by the custodian for the Global Securities, 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 Securities may be listed or traded or designated for issuance or to conform with any usage
with respect thereto, or to indicate any special limitations or restrictions to which any particular Securities are subject. 

So long as the Securities are eligible for book-entry settlement with the Depositary, or unless otherwise required by law,
subject to Section 2.09, all of the Securities will be represented by one or more Securities in global form registered in the name of the Depositary or the nominee of the Depositary (“Global Securities”). The transfer and
exchange of beneficial interests in any such Global Securities shall be effected through the Depositary in accordance with this Indenture and the applicable procedures of the Depositary. Except as provided in Section 2.09, beneficial owners of
a Global Security shall not be entitled to have certificates registered in their names, will not receive or be entitled to receive physical delivery of certificates in definitive form and will not be considered Holders of such Global Security. 

Any Global Securities shall represent such of the outstanding Securities as shall be specified therein and shall provide that
it shall represent the aggregate amount of outstanding Securities from time to time endorsed thereon and that the aggregate amount of outstanding Securities represented thereby may from time to time be increased or reduced to reflect issuances,
redemptions, repurchases, conversions, transfers or exchanges permitted hereby. Any endorsement of a Global Security to reflect the amount of any increase or decrease in the amount of outstanding Securities represented thereby shall be made by the
Trustee or the custodian for the Global Security, at the direction of the Trustee, in such manner and upon instructions given by the Holder of such Securities in accordance with this Indenture. Payment of principal of, and interest on, any Global
Securities shall be made to the Depositary in immediately available funds. 
 Section 2.03. Date and Denomination of
Securities; Payment at Maturity; Payment of Interest; Contingent Interest. The Securities shall be issuable in registered form without coupons in denominations of $1,000 principal amount and integral multiples thereof. Each Security shall
be dated the date of its authentication and shall bear interest from the date specified on the face of the form of Securities attached as Exhibit A hereto. Interest on the Securities shall be computed on the basis of a 360-day year comprised of
twelve 30-day months. 
 Contingent interest on the Securities (“Contingent Interest”) shall accrue and the
Company shall pay such Contingent Interest to the Holders, beginning with the six-month interest payment period commencing on November 1, 2021, during any six-month interest payment period with respect to which the average Trading Price for the
10 Trading Days immediately preceding the first day of such 

  
 13 

 
six-month interest payment period is greater than or equal to the Contingent Interest Trigger, in which case the Contingent Interest payable on each $1,000 Principal Amount for such six-month
interest payment period shall be equal to 0.50% per annum of the average Trading Price for the 10 Trading Days immediately preceding the first day of such six-month interest payment period. 

The Company shall determine whether Holders are entitled to receive Contingent Interest, and if so, provide notice to the
Trustee at least five Business Days prior to the payment date of such Contingent Interest. Notwithstanding any term contained in this Indenture or any other document to the contrary, the Trustee shall have no responsibilities, duties or obligations
for or with respect to (i) determining whether the Company must pay Contingent Interest or (ii) determining the amount of Contingent Interest, if any, payable by the Company. The Trustee shall not determine the Trading Price of the
Securities for purposes of determining whether Contingent Interest applies, unless requested by the Company to make such determination. 

Contingent Interest, if any, for any six-month interest payment period shall be paid on the applicable interest payment date to
the Holder in whose name any Security is registered on the security register on the corresponding Interest Record Date. Contingent Interest due under this Article 2 shall be treated for all purposes of this Indenture like any other interest accruing
on the Securities. 
 On the Maturity Date, each Holder shall be entitled to receive on such date the principal amount of the
Securities held and accrued and unpaid interest to, but not including, the Maturity Date. With respect to Global Securities, principal and interest will be paid to the Depositary in immediately available funds. With respect to any certificated
Securities, principal and interest will be payable at the Company’s office or agency maintained for that purpose, which initially will be the Trustee’s office at 100 Wall Street, Suite 1600, New York, NY 10005. 

The Person in whose name any Security is registered on the Register at 5:00 p.m., New York City time, on any Interest Record
Date with respect to any interest payment date shall be entitled to receive the interest payable on such interest payment date. 

Notwithstanding the foregoing, any Securities or portion thereof surrendered for conversion during the period after the
Interest Record Date for any interest payment date and ending prior to the corresponding interest payment date shall be accompanied by payment, in immediately available funds or other funds acceptable to the Company, of an amount equal to the
interest otherwise payable on such interest payment date on the principal amount being converted; provided that no such payment need be made (1) if a Holder converts its Securities that have been called for redemption and the Company has
specified a Redemption Date that is after an Interest Record Date and on or prior to the corresponding interest payment date, (2) if a Holder converts its Securities 

  
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following a Fundamental Change and the Company has specified a Fundamental Change Repurchase Date that is after an Interest Record Date and on or prior to the corresponding interest payment date,
(3) for any conversion following the Interest Record Date immediately preceding the Maturity Date, or (4) to the extent of any overdue interest, if overdue interest exists at the time of conversion with respect to such Securities. 

Except as provided above, the Company shall pay interest (i) on any Global Securities by wire transfer of immediately
available funds to the account of the Depositary or its nominee, (ii) on any Securities in certificated form having a principal amount of less than $2,000,000, by check mailed to the address of the Person entitled thereto as it appears in the
Register, provided that at maturity, interest will be payable at the office of the Company maintained by the Company for such purposes, which shall initially be an office or agency of the Trustee located at 100 Wall Street, Suite 1600, New
York, NY 10005 and (iii) on any Securities in certificated form having a principal amount of $2,000,000 or more, by wire transfer in immediately available funds at the election of the Holder of such Securities who has duly delivered notice of
such election and applicable wire instructions to the Trustee at least five Business Days prior to the relevant interest payment date, provided that at maturity, interest will be payable at the office of the Company maintained by the Company
for such purposes, which shall initially be an office or agency of the Trustee located at 100 Wall Street, Suite 1600, New York, NY 10005. If a payment date is not a Business Day, payment shall be made on the next succeeding Business Day, and no
interest will be payable on such interest payment in respect of the delay. 
 Upon the conversion of any Securities, the
accrued but unpaid interest attributable to the period from the issue date of the Securities to the Conversion Date, with respect to the converted Securities, shall not be cancelled, extinguished or forfeited, but rather shall be deemed to be paid
in full to the Holder thereof through delivery of the cash (including a cash payment in lieu of fractional shares, if any) and shares of Common Stock, if any, in exchange for the Securities being converted pursuant to the provisions hereof. 

Section 2.04. Execution and Authentication. One or more Officers shall sign the Securities for the Company
by manual or facsimile signature. 
 If an Officer whose signature is on a Security no longer holds that office at the time
the Trustee authenticates the Security, the Security shall be valid nevertheless. 
 A Security shall not be valid until an
authorized signatory of the Trustee manually signs the certificate of authentication on the Security. The signature shall be conclusive evidence that the Security has been authenticated under this Indenture. 

  
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 The Trustee may appoint an authenticating agent reasonably acceptable to the
Company to authenticate the Securities. Any such appointment shall be evidenced by an instrument signed by a Trust Officer, a copy of which shall be furnished to the Company. Unless limited by the terms of such appointment, an authenticating agent
may authenticate Securities whenever the Trustee may do so. Each reference in this Indenture to authentication by the Trustee includes authentication by such agent. An authenticating agent has the same rights as any Registrar, Paying Agent or agent
for service of notices and demands. 
 Section 2.05. Registrar, Paying Agent and Conversion Agent. The
Company shall maintain an office or agency where Securities may be presented for registration of transfer or for exchange (the “Registrar”), an office or agency where Securities may be presented for payment (the “Paying
Agent”) and an office or agency where Securities may be presented for conversion (the “Conversion Agent”). The Corporate Trust Office shall be considered as one such office or agency of the Company for each of the aforesaid
purposes. The Registrar shall keep a register of the Securities (the “Register”) and of their transfer and exchange. The Company may have one or more co-registrars and one or more additional paying agents. The term “Paying
Agent” includes any additional paying agent, and the term “Registrar” includes any co-registrars. The Company initially appoints the Trustee as (i) Registrar and Paying Agent in connection with the Securities, (ii) the
custodian with respect to the Global Securities and (iii) Conversion Agent. 
 The Company shall enter into an
appropriate agency agreement with any Registrar, Paying Agent or Conversion Agent not a party to this Indenture, which shall incorporate the terms of the TIA if required by the TIA. The agreement shall implement the provisions of this Indenture that
relate to such agent. The Company shall notify the Trustee of the name and address of any such agent. If the Company fails to maintain a Registrar, Paying Agent or Conversion Agent, the Trustee shall act as such and shall be entitled to appropriate
compensation therefor pursuant to Section 7.07. The Company or any of its domestically organized Wholly Owned Subsidiaries may act as Paying Agent, Conversion Agent or Registrar. 

The Company may remove any Registrar, Paying Agent or Conversion Agent upon written notice to such Registrar, Paying Agent or
Conversion Agent and to the Trustee; provided that no such removal shall become effective until (1) acceptance of an appointment by a successor as evidenced by an appropriate agreement entered into by the Company and such successor
Registrar, Paying Agent or Conversion Agent, as the case may be, and delivered to the Trustee or (2) notification to the Trustee that the Trustee shall serve as Registrar, Paying Agent or Conversion Agent until the appointment of a successor in
accordance with clause (1) above. The Registrar, Paying Agent or Conversion Agent may resign at any time upon written notice; provided that the Trustee may resign as Paying Agent, Conversion Agent or Registrar only if the Trustee also
resigns as Trustee in accordance with Section 7.08. 

  
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 Section 2.06. Paying Agent to Hold Money in Trust. On or prior
to each due date of the principal and interest on any Security, the Company shall deposit with the Paying Agent (or if the Company or a Wholly Owned Subsidiary of the Company is acting as Paying Agent, segregate and hold in trust for the benefit of
the Persons entitled thereto) a sum sufficient to pay such principal and interest when so becoming due. The Company shall require each Paying Agent (other than the Trustee) to agree in writing that the Paying Agent shall hold in trust for the
benefit of Securityholders or the Trustee all money held by the Paying Agent for the payment of principal of or interest on the Securities and shall notify the Trustee of any default by the Company in making any such payment. If the Company or a
Wholly Owned Subsidiary of the Company acts as Paying Agent, it shall segregate the money held by it as Paying Agent and hold it as a separate trust fund. The Company at any time may require a Paying Agent to pay all money held by it to the Trustee
and to account for any funds disbursed by the Paying Agent. Upon complying with this Section, the Paying Agent shall have no further liability for the money delivered to the Trustee. 

Section 2.07. Securityholder Lists. The Trustee shall preserve in as current a form as is reasonably
practicable the most recent list available to it of the names and addresses of Securityholders. If the Trustee is not the Registrar, the Company shall furnish, or cause the Registrar to furnish, to the Trustee, in writing at least five Business Days
before each interest payment date and at such other times as the Trustee may request in writing, a list in such form and as of such date as the Trustee may reasonably require of the names and addresses of Securityholders. 

Section 2.08. Exchange and Registration of Transfer of Securities. The Company shall cause to be kept at the
Corporate Trust Office the Register in which, subject to such reasonable regulations as it may prescribe, the Company shall provide for the registration of Securities and of transfers of Securities. The Register shall be in written form or in any
form capable of being converted into written form within a reasonably prompt period of time. 
 Upon surrender for
registration of transfer of any Securities to the Registrar or any co-registrar, and satisfaction of the requirements for such transfer set forth in this Section 2.08 and in Section 2.10, the Company shall execute, and the Trustee shall
authenticate and deliver, in the name of the designated transferee or transferees, one or more new Securities of any authorized denominations and of a like aggregate principal amount. 

Securities may be exchanged for other Securities of any authorized denominations and of a like aggregate principal amount, upon
surrender of the Securities to be exchanged at any such office or agency maintained by the 

  
 17 

 
Company pursuant to Section 4.02. Whenever any Securities are so surrendered for exchange, the Company shall execute, and the Trustee shall authenticate and deliver, the Securities that the
Holder making the exchange is entitled to receive bearing registration numbers not contemporaneously outstanding. 
 All
Securities issued upon any registration of transfer or exchange of Securities shall be the valid obligations of the Company, evidencing the same debt, and entitled to the same benefits under this Indenture, as the Securities surrendered upon such
registration of transfer or exchange. 
 All Securities presented or surrendered for registration of transfer or for
exchange, redemption, repurchase or conversion shall (if so required by the Company or the Registrar) be duly endorsed, or be accompanied by a written instrument or instruments of transfer in form satisfactory to the Company, duly executed by the
Holder thereof or his attorney duly authorized in writing. 
 No service charge shall be made to any Holder for any
registration of, transfer or exchange of Securities, but the Company may require payment by the Holder of a sum sufficient to cover any tax, assessment or other governmental charge that may be imposed in connection with any registration of transfer
or exchange of Securities. 
 Neither the Company nor the Trustee nor any Registrar shall be required to exchange, issue or
register a transfer of (a) any Securities for a period of fifteen calendar days next preceding the date of mailing of a notice of redemption, (b) any Securities or portions thereof called for redemption pursuant to Section 3.02,
except for the unredeemed portion of any Securities being redeemed in part, (c) any Securities or portions thereof surrendered for conversion pursuant to Article 10, (d) any Securities or portions thereof tendered for repurchase (and not
withdrawn) pursuant to Section 3.04 or (e) any Securities or portions thereof tendered for repurchase (and not withdrawn) pursuant to Section 3.05. 

Section 2.09. Global Securities. The following provisions shall apply to Global Securities: 

(a) Each Global Security authenticated under this Indenture shall be registered in the name of the Depositary or a nominee thereof and
delivered to the Depositary or a nominee thereof or custodian for the Global Securities therefor, and each such Global Security shall constitute a single Security for all purposes of this Indenture. 

(b) Notwithstanding any other provision in this Indenture, no Global Security may be exchanged in whole or in part for Physical Securities
registered, and no transfer of a Global Security in whole or in part may be registered, in the name of any Person other than the Depositary or a nominee thereof unless (A) the Depositary (x) has notified the Company that it is unwilling or
unable to continue as Depositary for such Global Security or (y) has ceased to be a clearing agency registered under the Exchange Act, and a 

  
 18 

 
successor depositary has not been appointed by the Company within 90 calendar days, or (B) the Company, in its sole discretion, notifies the Trustee in writing that it no longer wishes to
have all the Securities represented by Global Securities. Any Global Securities exchanged pursuant to this Section 2.09(b) shall be so exchanged in whole and not in part. 

(c) In addition, Physical Securities will be issued in exchange for beneficial interests in a Global Security upon request by or on behalf of
the Depositary in accordance with customary procedures following the request of a beneficial owner seeking to enforce its rights under the Securities or this Indenture upon the occurrence and during the continuance of an Event of Default. 

(d) Physical Securities issued in exchange for a Global Security or any portion thereof pursuant to Section 2.09(b) or
Section 2.09(c) shall be issued in definitive, fully registered form, without interest coupons, shall have an aggregate principal amount equal to that of such Global Securities or portion thereof to be so exchanged, shall be registered in such
names and be in such authorized denominations as the Depositary shall designate and shall bear any legends required hereunder. Any Global Securities to be exchanged shall be surrendered by the Depositary to the Trustee, as Registrar, provided
that pending completion of the exchange of a Global Security, the Trustee acting as custodian for the Global Securities for the Depositary or its nominee with respect to such Global Securities, shall reduce the principal amount thereof, by an amount
equal to the portion thereof to be so exchanged, by means of an appropriate adjustment made on the records of the Trustee. Upon any such surrender or adjustment, the Trustee shall authenticate and make available for delivery the Physical Securities
issuable on such exchange to or upon the written order of the Depositary or an authorized representative thereof. 
 (e) In the event of the
occurrence of any of the events specified in Section 2.09(b) above or upon any request described in Section 2.09(c), the Company will promptly make available to the Trustee a sufficient supply of Physical Securities in definitive, fully
registered form, without interest coupons. 
 (f) Neither any members of, or participants in, the Depositary (“Agent
Members”) nor any other Persons on whose behalf Agent Members may act shall have any rights under this Indenture with respect to any Global Securities registered in the name of the Depositary or any nominee thereof, and the Depositary or
such nominee, as the case may be, may be treated by the Company, the Trustee and any agent of the Company or the Trustee as the absolute owner and Holder of such Global Securities for all purposes whatsoever. Notwithstanding the foregoing, nothing
herein shall prevent the Company, the Trustee or any agent of the Company or the Trustee from giving effect to any written certification, proxy or other authorization furnished by the Depositary or such nominee, as the case may be, or impair, as
between the Depositary, its Agent Members and any other Person on whose behalf an Agent Member may act, the operation of customary practices of such Persons governing the exercise of the rights of a Holder of any Securities. 

(g) At such time as all interests in a Global Security have been redeemed, repurchased, converted, cancelled or exchanged for Securities in
certificated form, such 

  
 19 

 
Global Security shall, upon receipt thereof, be canceled by the Trustee in accordance with standing procedures and instructions existing between the Depositary and the custodian for the Global
Security. At any time prior to such cancellation, if any interest in a Global Security is redeemed, repurchased, converted, cancelled or exchanged for Securities in certificated form, the principal amount of such Global Security shall, in accordance
with the standing procedures and instructions existing between the Depositary and the custodian for the Global Security, be appropriately reduced, and an endorsement shall be made on such Global Security, by the Trustee or the custodian for the
Global Security, at the direction of the Trustee, to reflect such reduction. 
 Section 2.10. Global
Certificates. Notwithstanding any other provisions of this Indenture, a Global Security may not be transferred as a whole or in part except (i) by the Depositary to a nominee of the Depositary or by a nominee of the Depositary to the
Depositary or another nominee of the Depositary or by the Depositary or any such nominee to a successor Depositary or a nominee of such successor Depositary and (ii) for transfers of portions of a Global Security in certificated form made upon
request of a member of, or a participant in, the Depositary (for itself or on behalf of a beneficial owner) by written notice given to the Trustee by or on behalf of the Depositary in accordance with customary procedures of the Depositary and in
compliance with this Section 2.10. 
 The Depositary shall be a clearing agency registered under the Exchange Act. The
Company initially appoints The Depository Trust Company to act as Depositary with respect to each Global Security. Initially, each Global Security 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. 
 Physical Securities issued in exchange
for all or a part of the Global Securities pursuant to this Section 2.10 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,
shall instruct the Trustee. Upon execution and authentication, the Trustee shall deliver such Physical Securities to the Persons in whose names such Physical Securities are so registered. 

Section 2.11. Responsibilities and Obligations of the Trustee. The Trustee shall have no responsibility or
obligation to any Agent Members or any other Person with respect to the accuracy of the books or records, or the acts or omissions, of the Depositary or its nominee or of any participant or member thereof, with respect to any ownership interest in
the Securities or with respect to the delivery to any Agent Member or other Person (other than the Depositary) of any notice (including any notice of redemption) or the payment of any amount, under or with respect to such Securities. All notices and
communications to be given to the Holders of Securities and all payments to be made to Holders of Securities under the Securities shall be given or made only to or upon the order of the registered Holders of Securities (which shall be the Depositary
or its nominee 

  
 20 

 
in the case of a Global Security). The rights of beneficial owners in any Global Securities shall be exercised only through the Depositary subject to the customary procedures of the Depositary.
The Trustee may rely and shall be fully protected in relying upon information furnished by the Depositary with respect to its Agent Members. 

The Trustee shall have no obligation or duty to monitor, determine or inquire as to compliance with any restrictions on
transfer under applicable law with respect to any transfer of any interest in any Securities (including any transfers between or among Agent Members) 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 Indenture, and to examine the same to determine substantial compliance as to form with the express requirements hereof. 

Section 2.12. Replacement Securities. If a mutilated Security is surrendered to the Registrar or if the
Securityholder of a Security claims that the Security has been lost, destroyed or wrongfully taken, the Company shall issue and the Trustee shall authenticate a replacement Security if the requirements of Section 8-405 of the Uniform Commercial
Code are met, such that the Securityholder (i) notifies the Company or the Trustee within a reasonable time after he has notice of such loss, destruction or wrongful taking and the Registrar does not register a transfer prior to receiving such
notification, (ii) makes such request to the Company or the Trustee prior to the Security being acquired by a protected purchaser as defined in Section 8-303 of the Uniform Commercial Code (a “Protected Purchaser”) and
(iii) satisfies any other reasonable requirements of the Trustee and the Company. If required by the Trustee or the Company, such Securityholder shall furnish an indemnity bond sufficient in the judgment of the Trustee to protect the Company,
the Trustee, the Paying Agent, the Conversion Agent and the Registrar from any loss that any of them may suffer if a Security is replaced. The Company and the Trustee may charge the Securityholder for their expenses in replacing a Security. In case
any Security which has matured or is about to mature or has been called for redemption or has been properly tendered for repurchase on a Fundamental Change Repurchase Date (and not withdrawn) or has been tendered for repurchase on a Repurchase Date
(and not withdrawn), as the case may be, or is to be converted into Common Stock, shall become mutilated or be destroyed, lost or stolen, the Company may, instead of issuing a substitute Security, 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 Securities), 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 in connection with such substitution, and, in every case of destruction, loss or
theft, the applicant shall also furnish to the Company, the Trustee and, if applicable, any Paying Agent or Conversion Agent evidence to their satisfaction of the destruction, loss or theft of such Securities and of the ownership thereof. 

  
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 Every replacement Security is an additional obligation of the Company. 

The provisions of this Section 2.12 are exclusive and shall preclude (to the extent lawful) all other rights and remedies
with respect to the replacement or payment of mutilated, lost, destroyed or wrongfully taken Securities. 

Section 2.13. Outstanding Securities. Securities outstanding at any time are all Securities authenticated by
the Trustee except for those canceled by it, those delivered to it for cancellation and those described in this Section as not outstanding. A Security does not cease to be outstanding because the Company or an Affiliate of the Company holds the
Security. 
 If a Security is replaced pursuant to Section 2.12, it ceases to be outstanding unless the Trustee and the
Company receive proof satisfactory to them that the replaced Security is held by a Protected Purchaser. 
 If the Paying
Agent segregates and holds in trust, in accordance with this Indenture, on a Fundamental Change Redemption Date, Redemption Date, Repurchase Date or Maturity Date money sufficient to pay all principal and interest payable on that date with respect
to the Securities (or portions thereof) to be redeemed, repurchased or maturing, as the case may be, and the Paying Agent is not prohibited from paying such money to the Securityholders on that date pursuant to the terms of this Indenture, then on
and after that date such Securities (or portions thereof) cease to be outstanding and interest on them ceases to accrue. 

Section 2.14. Temporary Securities. Pending the preparation of Securities in certificated form, the Company
may execute and the Trustee or an authenticating agent appointed by the Trustee shall, upon the written request of the Company, authenticate and deliver temporary Securities (printed or lithographed). Temporary Securities shall be issuable in any
authorized denomination, and substantially in the form of the Securities in certificated form, but with such omissions, insertions and variations as may be appropriate for temporary Security, all as may be determined by the Company. Every such
temporary Security shall be executed by the Company and authenticated by the Trustee or such authenticating agent upon the same conditions and in substantially the same manner, and with the same effect, as the Securities in certificated form.
Without unreasonable delay, the Company will execute and deliver to the Trustee or such authenticating agent Securities in certificated form and thereupon any or all temporary Securities may be surrendered in exchange therefor, at each office or
agency maintained by the Company pursuant to Section 4.02 and the Trustee or such authenticating agent shall authenticate and make available for delivery in exchange for such temporary Securities an equal aggregate principal amount of
Securities in certificated form. Such exchange shall be made by the Company at 

  
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its own expense and without any charge therefor. Until so exchanged, the temporary Securities shall in all respects be entitled to the same benefits and subject to the same limitations under this
Indenture as Securities in certificated form authenticated and delivered hereunder. 
 Section 2.15.
Cancellation. The Company at any time may deliver Securities to the Trustee for cancellation. The Registrar and the Paying Agent shall forward to the Trustee any Securities surrendered to them for registration of transfer, exchange or
payment. The Trustee and no one else shall cancel all Securities surrendered for registration of transfer, exchange, payment or cancellation and deliver canceled Securities to the Company pursuant to written direction by an Officer. The Company may
not issue new Securities to replace Securities it has redeemed, paid or delivered to the Trustee for cancellation. The Trustee shall not authenticate Securities in place of canceled Securities other than pursuant to the terms of this Indenture. 

Section 2.16. CUSIP and ISIN Numbers. The Company in issuing the Securities may use “CUSIP” and
“ISIN” numbers (if then generally in use) and, if so, the Trustee shall use “CUSIP” and “ISIN” numbers in notices of redemption as a convenience to Securityholders; provided that any such notice may state that no
representation is made as to the correctness of such numbers either as printed on the Securities or as contained in any notice of a redemption and that reliance may be placed only on the other identification numbers printed on the Securities, and
any such redemption shall not be affected by any defect in or omission of such numbers. 
 Section 2.17. Additional
Securities; Repurchases. The Company may, from time to time without the consent of the Holders of outstanding Securities, increase the principal amount of the Securities by issuing additional Securities in the future pursuant to this
Indenture (“Additional Securities”) having terms and conditions identical to those of the other outstanding Securities, except that Additional Securities may have a different initial date from which interest begins to accrue thereon
so that the Additional Securities are fungible with outstanding Securities; provided that if the Additional Securities are not fungible with the Securities for U.S. federal income tax purposes, the Additional Securities will have a separate
CUSIP number from the Securities; and provided further, that the Additional Securities shall have the same CUSIP number as the Securities issued pursuant to the Exchange Agreements. The Securities originally issued pursuant to the Exchange
Agreements and any Additional Securities shall be treated as a single class for all purposes under this Indenture, including waivers, amendments, redemptions, offers to purchase and United States federal tax purposes. No Additional Securities may be
issued if on the issue date therefor any Event of Default has occurred and is continuing. The Company may, to the extent permitted by law, repurchase any Security in the open market or by tender offer at any price or by private agreement. Any
Security repurchased by the Company 

  
 23 

 
may, at the Company’s option, be surrendered to the Trustee for cancellation, but may not be reissued or resold by the Company. Any Security surrendered for cancellation may not be reissued
or resold and will be promptly cancelled. 
 ARTICLE 3 

REDEMPTION AND REPURCHASE OF SECURITIES 

Section 3.01. Optional Redemption of Securities. At any time on or after November 5, 2021, the
Securities may be redeemed at the option of the Company, in whole or in part, upon notice as set forth in Section 3.02, in cash at the redemption price (the “Redemption Price”) equal to 100% of the principal amount thereof plus
accrued and unpaid interest to, but excluding the redemption date (the “Redemption Date”); provided, however, if the Redemption Date is after an Interest Record Date and on or prior to the corresponding Interest
Payment Date, such interest will be paid on the Redemption Date to the Holder of record on such Interest Record Date. The Company may not redeem any Securities if the principal amount of the Securities has been accelerated (other than as a result of
a failure to pay the relevant Redemption Price), and such acceleration has not been rescinded, on or prior to the relevant Redemption Date. 

Section 3.02. Notice of Optional Redemption; Selection of Securities to be Redeemed. If the Company shall
desire to exercise the right to redeem all or, as the case may be, any part of the Securities pursuant to Section 3.01, it shall fix a date for redemption and it or, at its written request received by the Trustee not fewer than five Business
Days prior (or such shorter period of time as may be acceptable to the Trustee) to the date the notice of redemption is to be mailed, the Trustee in the name of and at the expense of the Company, shall mail or cause to be mailed a notice of such
redemption not less than 25 Scheduled Trading Days nor more than 60 Business Days prior to the Redemption Date to each Holder of Securities so to be redeemed in whole or in part at its last address as the same appears on the Register of the
Registrar; provided that if the Company makes such request of the Trustee, the Company shall provide the Trustee with the text of the notice of redemption and shall give written notice of the Redemption Date to the Trustee. Such mailing shall
be by first class mail. The notice, if mailed 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 notice by mail or any defect in
the notice to the Holder of any Securities designated for redemption as a whole or in part shall not affect the validity of the proceedings for the redemption of any other Securities. 

Each such notice of redemption shall specify: (i) the aggregate principal amount of Securities to be redeemed,
(ii) the CUSIP number or numbers of the Securities being redeemed, (iii) the Redemption Date (which shall be a Business Day), (iv) the Redemption Price at which Securities are to be redeemed, (v) the place or places of payment
and that payment will be made upon presentation and 

  
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surrender of such Securities, (vi) that interest accrued and unpaid to, but excluding, the Redemption Date will be paid as specified in said notice, and that on and after said date interest
thereon or on the portion thereof to be redeemed will cease to accrue, (vii) that the Holder has a right to convert the Securities called for redemption, (viii) the Conversion Rate on the date of such notice, (ix) the time and date on
which the right to convert such Securities or portions thereof will expire and (x) the formula for determining the amount of cash and the number of shares, if any, to be delivered to the Holder upon conversion pursuant to Section 10.13 and
the date on which the Conversion Observation Period begins. If fewer than all the Securities are to be redeemed, the notice of redemption shall identify the Securities to be redeemed (including CUSIP numbers, if any). If any Securities are to be
redeemed in part only, the notice of redemption shall state the portion of the principal amount thereof to be redeemed and shall state that, on and after the Redemption Date, upon surrender of such Securities, a new Security or Securities in
principal amount equal to the unredeemed portion thereof will be issued. 
 Whenever any Securities are to be redeemed, the
Company will give the Trustee written notice of the Redemption Date, together with an Officers’ Certificate as to the aggregate principal amount of Securities to be redeemed not fewer than 30 Scheduled Trading Days (or such shorter period of
time as may be acceptable to the Trustee) prior to the Redemption Date. 
 On or prior to the Redemption Date specified in
the notice of redemption given as provided in this Section 3.02, the Company will deposit with the Paying Agent (or, if the Company is acting as its own Paying Agent, set aside, segregate and hold in trust as provided in Section 2.06) an
amount of money in immediately available funds sufficient to redeem on the Redemption Date all the Securities (or portions thereof) so called for redemption (other than those theretofore surrendered for conversion) at the appropriate Redemption
Price, together with accrued and unpaid interest to, but excluding, the Redemption Date; provided that if such payment is made on the Redemption Date, it must be received by the Paying Agent, by 11:00 a.m., New York City time, on such date.
If any Securities called for redemption are converted pursuant hereto prior to such Redemption Date, any money deposited with the Paying Agent or so segregated and held in trust for the redemption of such Securities shall be paid to the Company or,
if then held by the Company, shall be discharged from such trust. 
 If less than all of the outstanding Securities are to be
redeemed, the Trustee shall select the Securities or portions thereof of the Global Securities or the Securities in certificated form to be redeemed (in principal amounts of $1,000 or integral multiples thereof) by lot, on a pro rata basis or by
another method the Trustee deems fair and appropriate (and in such manner as complies with applicable legal requirements). If any Security selected for redemption is submitted for conversion in part after such selection, the portion of such

  
 25 

 
Securities submitted for conversion shall be deemed (so far as may be possible) to be the portion to be selected for redemption. The Securities (or portions thereof) so selected for redemption
shall be deemed duly selected for redemption for all purposes hereof, notwithstanding that any such Securities are submitted for conversion in part before the mailing of the notice of redemption. 

Upon any redemption of less than all of the outstanding Securities, the Company and the Trustee may (but need not), solely for
purposes of determining the pro rata allocation among such Securities that are unconverted and outstanding at the time of redemption, treat as outstanding any Securities surrendered for conversion during the period of 15 calendar days preceding the
mailing of a notice of redemption and may (but need not) treat as outstanding any Securities authenticated and delivered during such period in exchange for the unconverted portion of any Securities converted in part during such period. 

Section 3.03. Payment of Securities Called for Redemption. Unless the Company shall default in the payment of such
Securities at the Redemption Price, plus interest, if any, accrued and unpaid to, but excluding, the applicable Redemption Date, interest on the Securities or portion of Securities so called for redemption, shall cease to accrue on and after
such date and, after 5:00 p.m., New York City time, on the Business Day immediately preceding the Redemption Date (unless the Company shall default in the payment of such Securities at the Redemption Price, together with interest accrued to such
date) such Securities shall cease to be convertible and, except as provided in Section 2.06 and Section 8.02, to be entitled to any benefit or security under this Indenture, and the Holders thereof shall have no right in respect of such
Securities except the right to receive the Redemption Price thereof plus accrued and unpaid interest to, but excluding, the Redemption Date. On presentation and surrender of such Securities at a place of payment in said notice specified, the
said Securities or the specified portions thereof shall be paid and redeemed by the Company at the Redemption Price, together with interest accrued and unpaid thereon to, but excluding, the Redemption Date. 

If on the Redemption Date the Paying Agent holds, in accordance with the terms hereof, cash sufficient to pay the Redemption
Price and related accrued interest, of any Security to be redeemed on the Redemption Date in accordance with this Indenture then, on the Redemption Date such Security will cease to be outstanding, whether or not book-entry transfer of the Security
has been made or the Security is delivered to the Paying Agent, as the case may be, and interest, shall cease to accrue, and the rights of the Holder in respect of the Security shall terminate (other than the right to receive the Redemption Price as
aforesaid upon delivery or transfer of the Securities in accordance with this Indenture). 
 Upon presentation of any
Securities redeemed in part only, the Company shall execute and the Trustee shall authenticate and make available for delivery to the Holder thereof, at the expense of the Company, a new Security or Securities of authorized denominations, in
principal amount equal to the unredeemed portion of the Securities so presented. 

  
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 Notwithstanding the foregoing, the Trustee shall not redeem any Securities or
mail any notice of redemption if the principal amount of the Securities has been accelerated (other than as a result to pay the relevant Redemption Price), and such acceleration has not been rescinded, on or prior to the relevant Redemption Date. If
any Securities called for redemption shall not be so paid upon surrender thereof for redemption on the Redemption Date as provided in this Section 3.03, to the extent legally permissible, the Redemption Price shall, until paid or duly provided
for, bear interest from and including the Redemption Date at the interest rate borne by the Securities and such Securities shall remain convertible into Common Stock until the Redemption Price and interest shall have been paid or duly provided for.

 Section 3.04. Repurchase at Option of Holders Upon a Fundamental Change. 

(a) If there shall occur a Fundamental Change at any time prior to the Maturity Date, then each Holder of Securities shall have the right, at
such Holder’s option, to require the Company to repurchase, at the Fundamental Change Repurchase Price (as defined below), all of such Holder’s Securities, or any portion thereof that is a multiple of $1,000 principal amount, on a date
(the “Fundamental Change Repurchase Date”) specified by the Company, that is not less than 20 Business Days nor more than 35 Business Days after the date of the Company Repurchase Notice related to such Fundamental Change at a cash
repurchase price equal to 100% of the principal amount of the Securities being repurchased, plus accrued and unpaid interest to, but excluding, the Fundamental Change Repurchase Date (the “Fundamental Change Repurchase
Price”), subject to the satisfaction by the Holder of the requirements set forth in Section 3.04(c); provided that if such Fundamental Change Repurchase Date falls after an Interest Record Date and on or prior to the
corresponding interest payment date, then the interest payable on the Fundamental Change Repurchase Date shall be paid on the Fundamental Change Repurchase Date to the Holders of record of the Securities on the applicable Interest Record Date
instead of the Holders surrendering the Securities for repurchase on such date. 
 (b) On or before the 15th calendar day after the
occurrence of a Fundamental Change, the Company will provide to the Trustee and to all Holders of record of the Securities on the date of the Fundamental Change at their addresses shown in the Register of the Registrar and to beneficial owners of
the Securities to the extent required by applicable law, the Company Repurchase Notice as set forth in Section 3.06 with respect to such Fundamental Change. 

No failure of the Company to give the foregoing notices and no defect therein shall limit the repurchase rights of Holders of Securities or
affect the validity of the proceedings for the repurchase of the Securities pursuant to this Section 3.04. 

  
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 (c) For Securities to be repurchased at the option of the Holder, the Holder must deliver to the
Paying Agent, prior to 5:00 p.m., New York City time, on the Fundamental Change Repurchase Date, (i) a written notice to the Paying Agent of exercise of repurchase (the “Fundamental Change Repurchase Notice”) in the form set
forth on the reverse of the Securities duly completed (if the Securities are certificated) or comply with applicable Depositary procedures (if the Securities are represented by a Global Security), together with (ii) such Securities duly
endorsed for transfer (if the Securities are certificated) or book-entry transfer of such Securities (if the Securities are represented by a Global Security). The delivery of such Securities to the Paying Agent with, or at any time after delivery
of, the Fundamental Change Repurchase Notice (together with all necessary endorsements) at the office of the Paying Agent shall be a condition to payment by the Company to the Holder of the Fundamental Change Repurchase Price therefor;
provided that such Fundamental Change Repurchase Price shall be so paid pursuant to this Section 3.04 only if the Securities so delivered to the Paying Agent shall conform in all respects to the description thereof in the Fundamental
Change Repurchase Notice. All questions as to the validity, eligibility (including time of receipt) and acceptance of any Securities for repurchase shall be determined by the Company, whose determination shall be final and binding absent manifest
error. 
 (d) The Company shall repurchase from the Holder thereof, pursuant to this Section 3.04, a portion of a Security, if the
principal amount of such portion is $1,000 or a whole multiple of $1,000. Provisions of this Indenture that apply to the repurchase of all of a Security also apply to the repurchase of such portion of such Security. 

(e) The Paying Agent shall promptly notify the Company of the receipt by it of any Fundamental Change Repurchase Notice or written notice of
withdrawal thereof. 
 Any repurchase by the Company contemplated pursuant to the provisions of this Section 3.04 shall
be consummated by the delivery of the consideration to be received by the Holder promptly following the later of the Fundamental Change Repurchase Date and the time of the book-entry transfer or delivery of the Securities. 

Section 3.05. Repurchase of Securities by the Company at the Option of Holders. 

(a) Each Holder of Securities shall have the right, at such Holder’s option, to require the Company to repurchase all of such
Holder’s Securities, or any portion thereof that is a multiple of $1,000 principal amount, on November 1, 2021, November 1, 2026 and November 1, 2031 (each, a “Repurchase Date”), at a repurchase price of
100% of the principal amount of the Securities being repurchased, plus accrued and unpaid interest to, but excluding, the Repurchase Date (the “Repurchase Price”). However, if such Repurchase Date falls after an Interest
Record Date and on or prior to the corresponding interest payment date, then the interest payable on such interest payment date shall be paid on the Repurchase Date to the Holders of record of the Securities on the applicable Interest Record Date
instead of the Holders surrendering the Securities for repurchase on such date. 

  
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 (b) On or before the 20th Business Day prior to each Repurchase Date, the Company shall mail or
cause to be mailed to all Holders of record on such date at their addresses shown in the Register of the Registrar (and to beneficial owners as required by applicable law) a Company Repurchase Notice as set forth in Section 3.06. 

No failure of the Company to give the foregoing notices and no defect therein shall limit the repurchase rights of Holders of
Securities or affect the validity of the proceedings for the repurchase of the Securities pursuant to this Section 3.05. 
 (c) For
Securities to be so repurchased at the option of the Holder, the Holder must deliver to the Paying Agent, at any time during the period beginning at 9:00 a.m., New York City time, on the date that is 20 Business Days prior to the applicable
Repurchase Date and ending at 5:00 p.m., New York City time, on the Business Day immediately preceding the applicable Repurchase Date, (i) a notice (the “Repurchase Notice”) in the form set forth on the reverse of the
Securities duly completed (if the Securities are certificated) or comply with applicable Depositary procedures (if the Securities are represented by a Global Security) together with (ii) such Securities duly endorsed for transfer (if the
Securities are certificated) or book-entry transfer of such Securities (if such Securities are represented by a Global Security). The delivery of such Securities to the Paying Agent with, or at any time after delivery of, the Repurchase Notice
(together with all necessary endorsements) at the office of the Paying Agent shall be a condition to the payment by the Company to the Holder of the repurchase price therefor; provided that such repurchase price shall be so paid pursuant to
this Section 3.05 only if the Securities so delivered to the Paying Agent shall conform in all respects to the description thereof in the Repurchase Notice. All questions as to the validity, eligibility (including time of receipt) and
acceptance of any Securities for repurchase shall be determined by the Company, whose determination shall be final and binding absent manifest error. 

(d) The Company shall repurchase from the Holder thereof, pursuant to this Section 3.05, a portion of a Security, if the principal amount
of such portion is $1,000 or a whole multiple of $1,000. Provisions of this Indenture that apply to the repurchase of all of a Security also apply to the repurchase of such portion of such Securities. 

(e) The Paying Agent shall promptly notify the Company of the receipt by it of any Repurchase Notice or written notice of withdrawal thereof.

 Any repurchase by the Company contemplated pursuant to the provisions of this Section 3.05 shall be consummated by
the delivery of the consideration to be received by the Holder promptly following the later of the Repurchase Date and the time of the book-entry transfer or delivery of the Securities, as the case may be. 

Section 3.06. Company Repurchase Notice; Tender Offer Compliance. (i) In connection with any repurchase of
Securities, the Company shall, in the case of 

  
 29 

 
a Fundamental Change, on or before the 15th calendar day after the occurrence of such Fundamental Change or, no less than 20 Business Days prior to each Repurchase Date, give notice to Holders
(with a copy to the Trustee) setting forth information specified in this Section 3.06 (in either case, the “Company Repurchase Notice”). 

Each Company Repurchase Notice shall: 

(1) state the Repurchase Price or the Fundamental Change Repurchase Price, as applicable, and the Fundamental Change Repurchase
Date or the Repurchase Date, as applicable, to which the Company Repurchase Notice relates; 
 (2) state, if applicable, the
circumstances constituting the Fundamental Change; 
 (3) state that the Repurchase Price or the Fundamental Change
Repurchase Price, as applicable, will be paid in cash; 
 (4) state that Holders must exercise their right to elect
repurchase by 5:00 p.m., New York City time, on the Fundamental Change Repurchase Date or on the Business Day immediately preceding the Repurchase Date, as the case may be; 

(5) include a form of Repurchase Notice or Fundamental Change Repurchase Notice, as applicable; 

(6) state the name and address of the Paying Agent; 

(7) state that Securities must be surrendered to the Paying Agent to collect the repurchase price; 

(8) state that a Holder may withdraw its Repurchase Notice or Repurchase Notice or Fundamental Change Repurchase Notice, as
applicable, at any time prior to 5:00 p.m., New York City time, on the Business Day immediately preceding the Repurchase Date or the Fundamental Change Repurchase Date, as the case may be, by delivering a valid written notice of withdrawal in
accordance with Section 3.07; 
 (9) state whether the Securities are then convertible, the then applicable Conversion
Rate, including, in the case of the occurrence of a Fundamental Change, expected changes, if any, in the Conversion Rate resulting from such Fundamental Change transaction and expected changes in the cash, shares or other property deliverable upon
conversion of the Securities as a result of the occurrence of the Fundamental Change; 

  
 30 

 (10) that Securities as to which a Fundamental Change Repurchase Notice has been
given may be converted only if the Fundamental Change Repurchase Notice is withdrawn in accordance with the terms of this Indenture; 

(11) state the amount of interest accrued and unpaid per $1,000 principal amount of Securities to, but excluding, the
Fundamental Change Repurchase Date or Repurchase Date, as the case may be; and 
 (12) state the CUSIP number of the
Securities. 
 A Company Repurchase Notice may be given by the Company or, at the Company’s request, the Trustee shall give such Company
Repurchase Notice in the Company’s name and at the Company’s expense; provided that the text of the Company Repurchase Notice shall be prepared by the Company. 

(b) The Company will, to the extent applicable: (i) comply with the provisions of Rule 13e-4 and Rule 14e-1 (or any successor provision)
under the Exchange Act that may be applicable at the time of the repurchase of the Securities, (ii) file the related Schedule TO (or any successor schedule, form or report) under the Exchange Act or any other schedule required in connection
with any offer by the Company to repurchase the Securities and (iii) comply with all other federal and state securities laws in connection with any offer by the Company to repurchase the Securities. 

Section 3.07. Effect of Repurchase Notice; Withdrawal. Upon receipt by the Paying Agent of the Fundamental Change
Repurchase Notice specified in Section 3.04 or of the Repurchase Notice specified in Section 3.05, as applicable, the Holder of the Securities in respect of which such Fundamental Change Repurchase Notice or Repurchase Notice, as
applicable, was given shall (unless such Fundamental Change Repurchase Notice or the Repurchase Notice, as applicable, is validly withdrawn in accordance with the following paragraph) thereafter be entitled to receive solely the repurchase price
with respect to such Securities. Such repurchase price shall be paid to such Holder, subject to receipt of funds and/or the Securities by the Paying Agent, promptly following the later of (x) the Fundamental Change Repurchase Date or Repurchase
Date, as applicable, with respect to such Securities (provided the Holder has satisfied the conditions in Section 3.04 or Section 3.05, as applicable) and (y) the time of book-entry transfer or delivery of such Securities to the
Paying Agent by the Holder thereof in the manner required by Section 3.04 or Section 3.05, as applicable. The Securities in respect of which a Fundamental Change Repurchase Notice or a Repurchase Notice, as applicable, has been given by
the Holder thereof may not be converted pursuant to Article 10 hereof on or after the date of the delivery of such Fundamental Change Repurchase Notice or such Repurchase Notice, as applicable, unless such Fundamental Change Repurchase Notice or
such Repurchase Notice, as applicable, has first been validly withdrawn. 

  
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 A Fundamental Change Repurchase Notice or Repurchase Notice, as applicable, may
be withdrawn by means of a written notice of withdrawal delivered to the office of the Paying Agent in accordance with the Fundamental Change Repurchase Notice or the Repurchase Notice, as applicable, at any time prior to 5:00 p.m., New York City
time, on the Business Day immediately preceding the Fundamental Change Repurchase Date or the Repurchase Date, as the case may be, specifying: 

(a) the certificate number, if any, of the Securities in respect of which such notice of withdrawal is being submitted if they are in
certificated form, or the appropriate Depositary information, in accordance with appropriate Depositary procedures, if the Securities in respect of which such notice of withdrawal is being submitted is represented by a Global Security, 

(b) the principal amount of the Securities with respect to which such notice of withdrawal is being submitted, and 

(c) the principal amount, if any, of such Securities which remains subject to the original Fundamental Change Repurchase Notice or the
Repurchase Notice, as applicable, which shall be $1,000 or a whole multiple of $1,000. 
 If a Fundamental Change Repurchase
Notice or Repurchase Notice, as applicable, is properly withdrawn, the Company shall not be obligated to repurchase the Securities listed in such Fundamental Change Repurchase Notice or Repurchase Notice, as applicable. 

Section 3.08. Deposit of Repurchase Price or Fundamental Change Repurchase Price. Prior to 11:00 a.m., New
York City time, on the Fundamental Change Repurchase Date or the Repurchase Date, as applicable, the Company shall deposit with the Paying Agent or, if the Company is acting as the Paying Agent, shall segregate and hold in trust as provided in
Section 2.06, an amount of cash (in immediately available funds if deposited on the Fundamental Change Repurchase Date or the applicable Repurchase Date, as the case may be), sufficient to pay the aggregate repurchase price of all the
Securities or portions thereof that are to be repurchased as of the Fundamental Change Repurchase Date or the Repurchase Date, as the case may be. 

If on the Fundamental Change Repurchase Date or a Repurchase Date the Paying Agent holds cash sufficient to pay the repurchase
price and related accrued interest of the Securities that Holders have elected to require the Company to repurchase in accordance with Section 3.04 or 3.05, as the case may be, then, on the Fundamental Change Repurchase Date or the applicable
Repurchase Date, as the case may be, such Securities will cease to be outstanding, and interest will cease to accrue (whether or not book entry transfer or delivery of the Securities has been made to the Paying Agent) and all other rights of the
Holders of such Securities will terminate, other than the right to receive the repurchase price and 

  
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any accrued interest upon delivery or book-entry transfer of the Securities. This will be the case whether or not book-entry transfer of the Securities has been made or the Securities has been
delivered to the Paying Agent. 
 Section 3.09. Securities Repurchased in Part. Upon presentation of any
Securities repurchased only in part, the Company shall execute and the Trustee shall authenticate and make available for delivery to the Holder thereof, at the expense of the Company, a new Security or Securities, of any authorized denomination, in
aggregate principal amount equal to the unrepurchased portion of the Securities presented. 
 ARTICLE 4 

COVENANTS 

Section 4.01. Payment of Securities. The Company shall promptly pay the principal of and interest on the
Securities on the dates and in the manner provided in the Securities and in this Indenture in each such case, prior to 11:00 a.m., New York City time. Principal and interest shall be considered paid on the date due if on such date the Trustee or the
Paying Agent holds in accordance with this Indenture money sufficient to pay all principal and interest then due and the Trustee or the Paying Agent, as the case may be, is not prohibited from paying such money to the Securityholders on that date
pursuant to the terms of this Indenture. 
 Section 4.02. Maintenance of Office or Agency. The Company
will maintain an office or agency in the United States where the Securities may be surrendered for registration of transfer or exchange or for presentation for payment or for conversion, redemption or repurchase and where notices and demands to or
upon the Company in respect of the Securities and this Indenture may be served. As of the date of this Indenture, such office is located at the office of the Trustee located at 100 Wall Street, Suite 1600, New York, NY 10005 and, at any other time,
at such other address as the Trustee may designate from time to time by notice to the Company. The Company will give prompt written notice to the Trustee of the location, and any change in the location, of such office or agency not designated or
appointed by the Trustee. If at any time the Company shall fail to maintain any such required office or agency or shall fail to furnish the Trustee with the address thereof, such presentations, surrenders, notices and demands may be made or served
at the Corporate Trust Office. 
 The Company may also from time to time designate co-registrars and one or more offices or
agencies where the Securities may be presented or surrendered for any or all such purposes and may from time to time rescind such designations. 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. 

  
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 Section 4.03. Annual Reports. 

(a) [Reserved.] 
 (b) The
Company shall file with the Trustee within 15 days after the same are required to be filed with the Commission, copies of any documents or reports that the Company is required to file with the Commission pursuant to Section 13 or 15(d) of the
Exchange Act (giving effect to any grace period provided by Rule 12b-25 under the Exchange Act). Any such document or report that the Company files with the Commission via the Commission’s EDGAR system shall be deemed to be filed with the
Trustee for purposes of this Section 4.03(b) at the time such documents are filed via the EDGAR system. 
 (c) Delivery of the reports
and documents listed in subsection (b) above to the Trustee is for informational purposes only, and the Trustee’s receipt of such reports and documents 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 Officers’ Certificate). 

Section 4.04. Existence. Subject to Article 5, the Company will do or cause to be done all things necessary
to preserve and keep in full force and effect its existence and rights (charter and statutory); provided that the Company shall not be required to preserve any such right if the Company shall determine that the preservation thereof is no
longer desirable in the conduct of the business of the Company and that the loss thereof is not disadvantageous in any material respect to the Holders of Securities. 

Section 4.05. Payment of Taxes and Other Claims. The Company will pay or discharge, or cause to be paid or
discharged, before the same may become delinquent, (i) all taxes, assessments and governmental charges levied or imposed upon the Company or any Significant Subsidiary or upon the income, profits or property of the Company or any Significant
Subsidiary, (ii) all claims for labor, materials and supplies which, if unpaid, might by law become a lien or charge upon the property of the Company or any Significant Subsidiary and (iii) all stamp taxes and other duties, if any, which
may be imposed by the United States or any political subdivision thereof or therein in connection with the issuance, transfer, exchange, conversion, redemption or repurchase of any Securities or with respect to this Indenture; provided that,
in the case of clauses (i) and (ii), the Company shall not be required to pay or discharge or cause to be paid or discharged any such tax, assessment, charge or claim (A) if the failure to do so will not, in the aggregate, have a material
adverse impact on the Company, or (B) if the amount, applicability or validity is being contested in good faith by appropriate proceedings. 

  
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 Section 4.06. Compliance Certificate. The Company shall
deliver to the Trustee within 120 days after the end of each fiscal year of the Company an Officers’ Certificate stating, as to each such Officer signing such certificate, whether to such Officer’s knowledge the Company during such
preceding fiscal year has kept, observed, performed and fulfilled the covenants contained in this Indenture and, if the Company shall be in Default, the certificate shall describe the Default, its status and what action the Company is taking or
proposes to take with respect thereto. The Company also shall comply with Section 314(a)(4) of the TIA. 

Section 4.07. Default Additional Interest Notice. If the Company is required to pay Default Additional
Interest to Holders of Securities pursuant to Section 6.13, the Company will provide written notice (“Additional Interest Notice”) to the Trustee of its obligation to pay Default Additional Interest no later than two Business
Days prior to the proposed payment date for Default Additional Interest, and the Default Additional Interest Notice shall set forth the amount of Default Additional Interest to be paid by the Company on such payment date. The Trustee shall not at
any time be under any duty or responsibility to any Holder of Securities to determine the Default Additional Interest, or with respect to the nature, extent or calculation of the amount of Default Additional Interest when made, or with respect to
the method employed in such calculation of the Default Additional Interest. 
 Section 4.08. Tax Treatment of the
Securities. The Company agrees, and by acceptance of a beneficial ownership interest in the Securities each Holder of Securities will be deemed to have agreed, for United States federal income tax purposes, (a) to treat the
Securities as indebtedness of the Company subject to United States Treasury regulations section 1.1275-4 (the “Contingent Debt Regulations”) and, for purposes of the Contingent Debt Regulations, to treat the fair market value of any
Common Stock beneficially received by a Holder upon any conversion of the Securities as a contingent payment, (b) to be bound by the Company’s determination of the “comparable yield” and “projected payment schedule,”
within the meaning of the Contingent Debt Regulations, with respect to the Securities and (c) to use such “comparable yield” and “projected payment schedule” in determining interest accruals with respect to such
Holder’s Securities and in determining adjustments thereto. A Holder of Securities may obtain the issue price, issue date, yield to maturity, comparable yield and the projected payment schedule by submitting a written request for such
information to: Nuance Communications, Inc., 1 Wayside Road, Burlington, MA 01803, Attention: Chief Financial Officer. 

  
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 ARTICLE 5 

SUCCESSOR COMPANY 

Section 5.01. When Company May Merge or Transfer Assets. The Company shall not in a single transaction or a
series of related transactions consolidate with or merge with or into any other Person (other than a Subsidiary of the Company), or sell, convey, transfer or lease its property and assets substantially as an entirety to any Person (other than to one
or more of the Subsidiaries of the Company as an entirety or substantially as an entirety), unless: 
 (a) either (i) the Company is
the continuing corporation, or (ii) the resulting, surviving or transferee person (if other than the Company) is a corporation or limited liability company organized and existing under the laws of the United States, any state thereof or the
District of Columbia and such person assumes, by a supplemental indenture in a form reasonably satisfactory to the Trustee, all of the Company’s obligations under the Securities and this Indenture; 

(b) immediately after giving effect to the transaction described above, no Default or Event of Default, has occurred and is continuing; 

(c) if as a result of such transaction the Securities become convertible into common stock or other securities issued by a third party, such
third party fully and unconditionally guarantees all obligations of the Company or such successor under the Securities and this Indenture; and 

(d) the Company has delivered to the Trustee the Officers’ Certificate and Opinion of Counsel, if any, requested by the Trustee pursuant
to this Indenture. 
 Section 5.02. Successor to be Substituted. In case of any such consolidation,
merger, sale, conveyance, transfer or lease in which the Company is not the continuing corporation and upon the assumption by the successor Person, by supplemental indenture, executed and delivered to the Trustee and reasonably satisfactory in form
and substance to the Trustee, of the due and punctual payment of the principal of, and interest on all of the Securities, and the due and punctual performance and observance of all of the covenants and conditions of this Indenture to be performed or
satisfied by the Company, such successor Person shall succeed to and be substituted for the Company, with the same effect as if it had been named herein as a party hereto, and the Company shall be discharged from its obligations under the Securities
and this Indenture. Such successor Person thereupon may cause to be signed, and may issue the Securities either in its own name or in the name of the Company. 

Upon the order of such successor Person instead of the Company and subject to all the terms, conditions and limitations in this
Indenture prescribed, the Trustee shall authenticate and shall deliver, or cause to be authenticated and delivered, any Securities that previously shall have been signed and delivered by 

  
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the officers of the Company to the Trustee for authentication, and any Securities that such successor Person thereafter shall cause to be signed and delivered to the Trustee for that purpose. All
the Securities so issued shall in all respects have the same legal rank and benefit under this Indenture as the Securities theretofore or thereafter issued in accordance with the terms of this Indenture as though all of such Securities had been
issued at the date of the execution hereof. In the event of any such consolidation, merger, sale, conveyance, transfer or lease, upon compliance with this Article 5 the Person named as the “Company” in the first paragraph of this Indenture
or any successor that shall thereafter have become such in the manner prescribed in this Article 5 may be dissolved, wound up and liquidated at any time thereafter and such Person shall be discharged from its liabilities as obligor and maker of the
Securities and from its obligations under this Indenture. 
 Section 5.03. Opinion of Counsel to be Given to
Trustee. Prior to execution of any supplemental indenture pursuant to this Article 5, if so requested by the Trustee, the Trustee shall receive an Officers’ Certificate and an Opinion of Counsel as conclusive evidence that any such
consolidation, merger, sale, conveyance, transfer or lease and any such assumption complies with the provisions of this Article 5. 
 ARTICLE
6 
 DEFAULTS AND REMEDIES 

Section 6.01. Events of Default. An “Event of Default” occurs if: 

(a) the Company defaults in any payment of interest on any Security when the same becomes due and payable and such default continues for a
period of 30 calendar days; 
 (b) the Company defaults in the payment of the principal of any Security when the same becomes due and
payable at maturity, or the Company defaults in the payment of the Redemption Price, the Fundamental Change Repurchase Price or the Repurchase Price, in each case when due; 

(c) the Company fails to deliver cash and, if applicable, shares of Common Stock (including any Additional Shares), or a combination of the
foregoing, as required pursuant to Article 10 upon the conversion of any Securities and such failure continues for five Business Days following the scheduled settlement date for such conversion; 

(d) the Company fails to provide notice of the anticipated effective date or actual effective date of a Fundamental Change on a timely basis
as required in this Indenture; 
 (e) the Company fails to perform or observe any other term, covenant or agreement contained in the
Securities or this Indenture (other than those referred to in (a), (b), (c) or (d) above) and such failure continues for 60 days after receipt by the Company of a Notice of Default; 

  
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 (f) a failure to pay when due (whether at stated maturity or otherwise) by the Company or any
Significant Subsidiary of the Company, after the expiration of any applicable grace period, of principal of or interest on indebtedness for borrowed money, where the amount of such unpaid principal and/or interest is in an aggregate amount in excess
of $50 million or more (or a foreign currency equivalent), or a default that results in the acceleration of maturity, of any indebtedness for borrowed money of the Company or any Significant Subsidiary of the Company in an aggregate amount in excess
of $50 million (or its foreign currency equivalent at the time), in each case, if both (i) such Indebtedness is not discharged and (ii) such acceleration is not rescinded, stayed or annulled, within a period of 30 calendar days after
receipt by the Company of a Notice of Default; 
 (g) a final judgment for the payment of $50 million or more (excluding any amounts covered
by insurance or subject to a binding indemnity from a financially responsible third party with resources sufficient to pay such indemnity obligation when due) rendered against the Company or any Significant Subsidiary of the Company, which judgment
is not discharged or stayed within 90 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; 

(h) the Company or any Significant Subsidiary of the Company pursuant to or within the meaning of any Bankruptcy Law: 

(i) commences a voluntary case; 

(ii) consents to the entry of an order for relief against it in an involuntary case; 

(iii) consents to the appointment of a Custodian of it or for any substantial part of its property; or 

(iv) makes a general assignment for the benefit of its creditors; 

or takes any comparable action under any foreign laws relating to insolvency; 

(i) a court of competent jurisdiction enters an order or decree under any Bankruptcy Law that: 

(i) is for relief against the Company or any Significant Subsidiary of the Company in an involuntary case; 

(ii) appoints a Custodian of the Company or any Significant Subsidiary of the Company or for any substantial part of its
property; or 
 (iii) orders the winding up or liquidation of the Company or any Significant Subsidiary of the Company; 

or any similar relief is granted under any foreign laws, and, in each such case, the order or decree remains unstayed and in effect for 60
consecutive days. 

  
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 The foregoing shall constitute Events of Default whatever the reason for any such
Event of Default and whether it is voluntary or involuntary or is 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. 

The term “Bankruptcy Law” means Title 11, United States Code, or any similar Federal or state law for
the relief of debtors. The term “Custodian” means any receiver, trustee, assignee, liquidator, custodian or similar official under any Bankruptcy Law. 

A Default under clause (e) or (f) above is not an Event of Default until the Trustee or the Securityholders of at
least 25% in aggregate principal amount of the outstanding Securities notify the Company or the Company and the Trustee, respectively, of the Default and the Company does not cure such Default within the time specified after receipt of such notice.
Such notice must specify the Default, demand that it be remedied and state that such notice is a “Notice of Default.” When any Default under this Section 6.01 is cured in accordance herewith, it shall cease to be a Default.

 The Company shall deliver to the Trustee, promptly upon becoming aware of any Default, written notice in the form of an
Officers’ Certificate of any Default known to the party, its status and what action the Company is taking or proposes to take with respect thereto. 

Section 6.02. Acceleration. If an Event of Default (other than an Event of Default specified in
Section 6.01(h) or Section 6.01(i) with respect to the Company) occurs and is continuing, the Trustee by written notice to the Company, or the Securityholders of at least 25% in principal amount of the outstanding Securities by written
notice to the Company and the Trustee, may declare the principal of and accrued but unpaid interest on all the Securities to be due and payable. Upon such a declaration, such principal and interest shall be due and payable immediately. If an Event
of Default specified in Section 6.01(h) or Section 6.01(i) with respect to the Company occurs, the principal of and interest on all the Securities shall ipso facto become and be immediately due and payable without any declaration or other
act on the part of the Trustee or any Securityholders. The Securityholders of a majority in principal amount of the Securities by notice to the Trustee may rescind an acceleration and its consequences if the rescission would not conflict with any
judgment or decree and if (i) the Company has paid (or deposited with the Trustee) all overdue interest on all the Securities and the principal amount of the Securities that has become due otherwise than by such acceleration or declaration, as
well as paid interest upon overdue interest to the extent that payment of such interest is lawful and paid to the Trustee any amount due to it for the reasonable compensation, expenses, 

  
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disbursements and advances of the Trustee, its agents and its counsel, and (ii) all existing Events of Default have been cured or waived except nonpayment of principal or interest that has
become due solely because of acceleration. No such rescission shall affect any subsequent Default or impair any right consequent thereto. 

Section 6.03. Other Remedies. If an Event of Default occurs and is continuing, and the principal of and
accrued but unpaid interest on the Securities has been declared due and payable as provided in Section 6.02 the Trustee may pursue any available remedy to collect the payment of principal of or interest on the Securities or to enforce the
performance of any provision of the Securities or this Indenture. 
 The Trustee may maintain a proceeding even if it does
not possess any of the Securities or does not produce any of them in the proceeding. A delay or omission by the Trustee or any Securityholder in exercising any right or remedy accruing upon an Event of Default shall not impair the right or remedy or
constitute a waiver of or acquiescence in the Event of Default. No remedy is exclusive of any other remedy. All available remedies are cumulative. 

Section 6.04. Waiver of Defaults and Events of Default. The Holders of a majority in principal amount of the
Securities outstanding by notice to the Trustee may on behalf of the Holders of all the Securities, waive any Default or Event of Default and its consequences except (i) a default in the payment of the principal of or interest on a Security
when due, (ii) an Event of Default arising from the failure to redeem or repurchase any Security when required pursuant to the terms of this Indenture, (iii) an Event of Default arising from the failure of the Company to deliver, cash and,
if applicable, shares of Common Stock upon the conversion of any Securities pursuant to the terms of this Indenture or (iv) a default in respect of a provision that under Section 9.02 cannot be amended without the consent of each
Securityholder affected. When an Event of Default is waived, it is deemed cured, but no such waiver shall extend to any subsequent or other Event of Default or impair any consequent right. 

Section 6.05. Control by Majority. The Securityholders of a majority in aggregate principal amount of the
outstanding Securities may direct the time, method and place of conducting any proceeding for any remedy available to the Trustee or of exercising any trust or power conferred on the Trustee. However, the Trustee may refuse to follow any direction
that conflicts with law or this Indenture or, subject to Section 7.01, that the Trustee determines is unduly prejudicial to the rights of other Securityholders or would involve the Trustee in personal liability; provided that the Trustee
may take any other action deemed proper by the Trustee that is not inconsistent with such direction. Prior to taking any action hereunder, the Trustee shall be entitled to indemnification satisfactory to it in its sole discretion against all losses
and expenses caused by taking or not taking such action. 

  
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 Section 6.06. Limitation on Suits. Except to enforce the right
to receive payment of principal or interest when due, no Securityholder may pursue any remedy with respect to this Indenture or the Securities unless: 

(a) the Securityholder gives to the Trustee written notice stating that an Event of Default is continuing; 

(b) the Securityholders of at least 25% in principal amount of the Securities make a written request to the Trustee to pursue the remedy; 

(c) such Securityholder or Securityholders offer to the Trustee security or indemnity reasonably satisfactory to the Trustee against any loss,
liability or expense of the Trustee; 
 (d) the Trustee does not comply with the request within 60 days after receipt of the request and the
offer of indemnity; and 
 (e) the Securityholders of a majority in principal amount of the Securities do not give the Trustee a direction
inconsistent with the request. 
 A Securityholder may not use this Indenture to prejudice the rights of another
Securityholder or to obtain a preference or priority over another Securityholder. 
 Anything contained in this Indenture or
the Securities to the contrary notwithstanding, the Holder of any Securities, without the consent of either the Trustee or the Holder of any other Securities, on its own behalf and for its own benefit, may enforce, and may institute and maintain any
proceeding suitable to enforce, its rights of conversion as provided herein. 
 Section 6.07. Rights of
Securityholders to Receive Payment. Notwithstanding any other provision of this Indenture, the right of any Securityholder to receive payment of the principal of (including the Redemption Price, Fundamental Change Repurchase Price or
Repurchase Price) and accrued interest on the Securities held by such Securityholder, or delivery of the cash and, if applicable, shares of Common Stock issuable upon conversion of the Securities, on or after the respective due dates expressed in
the Securities, or to bring suit for the enforcement of any such payment or delivery on or after such respective dates, shall not be impaired or affected without the consent of such Securityholder. 

Section 6.08. Collection Suit by Trustee. If an Event of Default specified in Section 6.01(a) or
6.01(b) occurs and is continuing, the Trustee may recover judgment in its own name and as trustee of an express trust against the Company for the whole amount then due and owing (together with interest on any unpaid interest to the extent lawful)
and the amounts provided for in Section 7.07. 

  
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 Section 6.09. Trustee May File Proofs of Claim. The Trustee
may file such proofs of claim and other papers or documents as may be necessary or advisable in order to have the claims of the Trustee and the Securityholders allowed in any judicial proceedings relative to the Company, their creditors or their
property and, unless prohibited by law or applicable regulations, may vote on behalf of the Securityholders in any election of a trustee in bankruptcy or other Person performing similar functions, and any Custodian in any such judicial proceeding is
hereby authorized by each Securityholder to make payments to the Trustee and, in the event that the Trustee shall consent to the making of such payments directly to the Securityholders, to pay to the Trustee any amount due it for the reasonable
compensation, expenses, disbursements and advances of the Trustee, its agents and its counsel, and any other amounts due the Trustee under Section 7.07. 

Section 6.10. Priorities. If the Trustee collects any money or property pursuant to this Article 6, it shall
pay out the money or property in the following order: 
 FIRST: to the Trustee for amounts due under Section 7.07; 

SECOND: to Securityholders for amounts due and unpaid on the Securities for principal and interest, ratably without preference
or priority of any kind, according to the amounts due and payable on the Securities for principal and interest, respectively; and 

THIRD: to the Company. 

The Trustee may fix a record date and payment date for any payment to Securityholders pursuant to this Section. At least 15 days before such
record date, the Trustee shall mail to each Securityholder and the Company a notice that states the record date, the payment date and amount to be paid. 

Section 6.11. Undertaking for Costs. In any suit for the enforcement of any right or remedy under this
Indenture or in any suit against the Trustee for any action taken or omitted by it as Trustee, a court in its discretion may require the filing by any party litigant in the suit of an undertaking to pay the costs of the suit, and the court in its
discretion may assess reasonable costs, including reasonable attorneys’ fees, against any party litigant in the suit, having due regard to the merits and good faith of the claims or defenses made by the party litigant. This Section does not
apply to a suit by the Trustee, a suit by a Securityholder pursuant to Section 6.07 or a suit by Securityholders of more than 10% in principal amount of the Securities or to any suit instituted by any Holder of Securities for the enforcement of
the payment of the principal of or interest on any Securities on or after the due date expressed in such Securities or to any suit for the enforcement of the right to convert any Securities in accordance with the provisions of Article 10. 

  
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 Section 6.12. Waiver of Stay, Extension or Usury Laws. The Company (to the
extent it may lawfully do so) shall not at any time insist upon, or plead, or in any manner whatsoever claim or take the benefit or advantage of, any stay, extension or usury law wherever enacted, now or at any time hereafter in force, which may
affect the covenants or the performance of this Indenture; and the Company (to the extent that it may lawfully do so) hereby expressly waives all benefit or advantage of any such law, and shall not hinder, delay or impede the execution of any power
herein granted to the Trustee, but shall suffer and permit the execution of every such power as though no such law had been enacted. 

Section 6.13. Alternative Remedy for Failure to Comply with Reporting Obligations in the Indenture and TIA.
Notwithstanding any other provision of this Article 6, if the Company so elects, the sole remedy for an Event of Default relating to the failure to comply with Section 4.03 of this Indenture will consist exclusively of the right to receive
additional interest (the “Default Additional Interest”) on the Securities at a rate equal to (x) 0.25% per annum of the principal amount of the Securities outstanding for each day during the 90-day period on which such Event of
Default is continuing beginning on, and including, the date on which such Event of Default first occurs and (y) 0.50% per annum of the principal amount of the Securities outstanding for each day during the 275-day period beginning on, and including,
the 91st day on which such Event of Default is continuing. In the event the Company does not elect to pay the Default Additional Interest upon an Event of Default in accordance with this Section 6.13, the Securities will be subject to
acceleration as provided above. The Default Additional Interest will accrue on all outstanding Securities from and including the date on which an Event of Default relating to a failure to comply with Section 4.03 of this Indenture first occurs
to, but not including, the 365th day thereafter (or such earlier date on which the Event of Default relating to such failure shall have been cured or waived prior to such 365th day) and will be payable in the same manner as regular interest on the
Securities. On such 365th day (or earlier, if the Event of Default relating to such failure is cured or waived prior to such 365th day) such Default Additional Interest will cease to accrue and the Securities will be subject to acceleration as
provided above if the Event of Default is continuing. In no event will Default Additional Interest accrue at a rate in excess of 0.50% per annum pursuant to this Indenture, regardless of the number of events or circumstances giving rise to the
requirement to pay the Default Additional Interest. Default Additional Interest will be payable in arrears on each regular interest payment date following accrual in the same manner as regular interest on the Securities. This provision will not
affect the rights of holders of Securities in the event of the occurrence of any other Event of Default. 

  
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 ARTICLE 7 

TRUSTEE 

Section 7.01. Duties of Trustee. (a) If an Event of Default has occurred and is continuing, the Trustee shall exercise
the rights and powers vested in it by this Indenture and use the same degree of care and skill in its exercise as a prudent Person would exercise or use under the circumstances in the conduct of such Person’s own affairs. 

(b) Except during the continuance of an Event of Default: 

(i) the Trustee need only perform such duties as are specifically set forth in this Indenture and no implied covenants or
obligations shall be read into this Indenture against the Trustee; and 
 (ii) in the absence of bad faith on its part, the
Trustee may conclusively rely, as to the truth of the statements and the correctness of the opinions expressed therein, upon certificates or opinions furnished to the Trustee and conforming to the requirements of this Indenture. However, the Trustee
shall examine the certificates and opinions to determine whether or not they conform to the requirements of this Indenture. 
 (c) The
Trustee may not be relieved from liability for its own negligent action, its own negligent failure to act or its own willful misconduct, except that: 

(i) this paragraph does not limit the effect of paragraph (b) of this Section; 

(ii) the Trustee shall not be liable for any error of judgment made in good faith by a Trust Officer unless it is proved that
the Trustee was negligent in ascertaining the pertinent facts; and 
 (iii) the Trustee shall not be liable with respect to
any action it takes or omits to take in good faith in accordance with a direction received by it pursuant to Section 6.05. 
 (d) Every
provision of this Indenture that in any way relates to the Trustee is subject to paragraphs (a), (b) and (c) of this Section. 

(e) The Trustee shall not be liable for interest on any money received by it except as the Trustee may agree in writing with the Company. 

(f) Money held in trust by the Trustee need not be segregated from other funds except to the extent required by law. 

  
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 (g) No provision of this Indenture shall require the Trustee to expend or risk its own funds or
otherwise incur financial liability in the performance of any of its duties hereunder or in the exercise of any of its rights or powers, if it shall have reasonable grounds to believe that repayment of such funds or adequate indemnity against such
risk or liability is not reasonably assured to it. 
 (h) Every provision of this Indenture relating to the conduct or
affecting the liability of or affording protection to the Trustee shall be subject to the provisions of this Section and to the provisions of the TIA. 

Section 7.02. Rights of Trustee. (a) The Trustee may rely on any document believed by it to be genuine and to have been
signed or presented by the proper person. The Trustee need not investigate any fact or matter stated in the document. 
 (b) Before the
Trustee acts or refrains from acting, it may require an Officers’ Certificate or an Opinion of Counsel. The Trustee shall not be liable for any action it takes or omits to take in good faith in reliance on the Officers’ Certificate or
Opinion of Counsel. 
 (c) The Trustee may act through agents and shall not be responsible for the misconduct or negligence of any agent
appointed with due care. 
 (d) The Trustee shall not be liable for any action it takes or omits to take in good faith which it believes to
be authorized or within its rights or powers. 
 (e) The Trustee may consult with counsel, and the advice or opinion of counsel with respect
to legal matters relating to this Indenture and the Securities shall be full and complete authorization and protection from liability in respect to any action taken, omitted or suffered by it hereunder in good faith and in accordance with the advice
or opinion of such counsel. 
 (f) The Trustee shall not be bound to make any investigation into the facts or matters stated in any
resolution, certificate, statement, instrument, opinion, report, notice, request, consent, order, approval, bond, note, debenture, other paper or document, but the Trustee, in its discretion, may make such further inquiry or investigation into such
facts or matters as it may see fit. 
 (g) The Trustee shall be under no obligation to exercise any of the rights or powers vested in it by
this Indenture at the request, order or direction of any of the Securityholders pursuant to the provisions of this Indenture, unless such Securityholders shall have offered to the Trustee security or indemnity reasonably satisfactory to the Trustee
against the costs, expenses and liabilities which may be incurred therein or thereby. 
 Section 7.03. Individual Rights
of Trustee. The Trustee in its individual or any other capacity may become the owner or pledgee of Securities and may otherwise deal with the Company or its Affiliates with the same rights it would

  
 45 

 
have if it were not Trustee. Any Conversion Agent, Paying Agent, Registrar or co-paying agent may do the same with like rights. However, the Trustee must comply with Sections 7.10 and 7.11. 

Section 7.04. Trustee’s Disclaimer. The Trustee shall not be responsible for and makes no representation as to the
validity or adequacy of this Indenture or the Securities, it shall not be accountable for the Company’s use of the proceeds from the Securities, and it shall not be responsible for any statement of the Company in this Indenture or in any
document issued in connection with the sale of the Securities or in the Securities other than the Trustee’s certificate of authentication. 

Section 7.05. Notice of Defaults. (a) The Trustee shall not be deemed to have notice of any Default, other than a
payment default, unless a Trust Officer shall have been advised in writing that a Default has occurred. No duty imposed upon the Trustee in this Indenture shall be applicable with respect to any Default of which the Trustee is not deemed to have
such notice. 
 (b) If a default occurs and is continuing and if it is known to the Trustee, the Trustee shall mail to each Securityholder
notice of the default within the earlier of 90 days after it occurs or 30 days after it is known to a Trust Officer or written notice of it is received by the Trustee. Except in the case of a default in payment of principal or interest on any
Security (including payments pursuant to the redemption or repurchase provisions of such Security), the Trustee may withhold notice if and so long as a committee of its Trust Officers in good faith determines that withholding notice is in the
interests of the Securityholders. 
 Section 7.06. Reports by Trustee to Securityholders. As promptly as
practicable, beginning with the May 15 following the first anniversary of the date of this Indenture, and in any event prior to May 15 in each subsequent year, the Trustee shall, to the extent that any of the events described in TIA §
313(a) occurred within the previous twelve months, but not otherwise, mail to each Securityholder a brief report dated as of May 15 that complies with Section 313(a) of the TIA. The Trustee shall also comply with Section 313(b) of the
TIA. 
 A copy of each report at the time of its mailing to Securityholders shall be filed with the SEC and each stock
exchange (if any) on which the Securities are listed. The Company agrees to promptly notify the Trustee whenever the Securities become listed on any stock exchange and of any delisting thereof. 

Section 7.07. Compensation and Indemnity. The Company shall pay to the Trustee from time to time such compensation as
the Company and the Trustee shall from time to time agree in writing. The Trustee’s compensation shall not be limited by any law on compensation of a trustee of an express trust. The Company shall reimburse the Trustee upon request for all
reasonable out-of-pocket expenses incurred or made by it, including costs of collection, in addition 

  
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to the compensation for its services. Such expenses shall include the reasonable compensation and expenses, disbursements and advances of the Trustee’s agents, counsel, accountants and
experts. The Company shall indemnify the Trustee, and hold it harmless, against any and all loss, liability or expense (including reasonable attorneys’ fees) incurred by or in connection with the offer and sale of the Securities or the
administration of this trust and the performance of its duties hereunder. The Trustee shall notify the Company of any claim for which it may seek indemnity promptly upon obtaining actual knowledge thereof; provided that any failure so to
notify the Company shall not relieve the Company of its indemnity obligations hereunder. The Company shall defend the claim and the indemnified party shall provide reasonable cooperation at the Company’s expense in the defense. Such indemnified
parties may have separate counsel and the Company shall pay the fees and expenses of such counsel; provided that the Company shall not be required to pay such fees and expenses if it assumes such indemnified parties’ defense and, in such
indemnified parties’ reasonable judgment, there is no conflict of interest between the Company and such parties in connection with such defense. The Company need not reimburse any expense or indemnify against any loss, liability or expense
incurred by an indemnified party through such party’s own willful misconduct and negligence. 
 To secure the
Company’s payment obligations in this Section, the Trustee shall have a lien prior to the Securities on all money or property held or collected by the Trustee other than money or property held in trust to pay principal of and interest and any
liquidated damages on particular Securities. 
 The Company’s payment obligations pursuant to this Section shall survive
the satisfaction or discharge of this Indenture, any rejection or termination of this Indenture under any bankruptcy law or the resignation or removal of the Trustee. When the Trustee incurs expenses after the occurrence of an Event of Default
specified in Section 6.01(h) or 6.01(i) with respect to the Company, the expenses are intended to constitute expenses of administration under the Bankruptcy Law. 

Section 7.08. Replacement of Trustee. The Trustee may resign at any time by so notifying the Company. The Holders of a
majority in principal amount of the Securities may remove the Trustee by so notifying the Trustee and may appoint a successor Trustee. The Company shall remove the Trustee if: 

(a) the Trustee fails to comply with Section 7.10; 

(b) the Trustee is adjudged bankrupt or insolvent; 

(c) a receiver or other public officer takes charge of the Trustee or its property; or 

(d) the Trustee otherwise becomes incapable of acting. 

  
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 If the Trustee resigns, is removed by the Company or by the Holders of a majority
in principal amount of the Securities and such Securityholders do not reasonably promptly appoint a successor Trustee, or if a vacancy exists in the office of Trustee for any reason (the Trustee in such event being referred to herein as the retiring
Trustee), the Company shall promptly appoint a successor Trustee. 
 A successor Trustee shall deliver a written acceptance
of its appointment to the retiring Trustee and to the Company. Thereupon the resignation or removal of the retiring Trustee shall become effective, and the successor Trustee shall have all the rights, powers and duties of the Trustee under this
Indenture. The successor Trustee shall mail a notice of its succession to Securityholders. The retiring Trustee shall promptly transfer all property held by it as Trustee to the successor Trustee, subject to the lien provided for in
Section 7.07. 
 If a successor Trustee does not take office within 60 days after the retiring Trustee resigns or is
removed, the retiring Trustee or the Holders of 10% in principal amount of the Securities may petition any court of competent jurisdiction for the appointment of a successor Trustee. 

If the Trustee fails to comply with Section 7.10, any Securityholder may petition any court of competent jurisdiction for
the removal of the Trustee and the appointment of a successor Trustee. 
 Notwithstanding the replacement of the Trustee
pursuant to this Section, the Company’s obligations under Section 7.07 shall continue for the benefit of the retiring Trustee. 

Section 7.09. Successor Trustee by Merger. If the Trustee consolidates with, merges or converts into, or transfers all
or substantially all of its corporate trust business or assets to, another corporation or banking association, the resulting, surviving or transferee corporation without any further act shall be the successor Trustee. 

In case at the time such successor or successors by merger, conversion or consolidation to the Trustee shall succeed to the
trusts created by this Indenture any of the Securities shall have been authenticated but not delivered, any such successor to the Trustee may adopt the certificate of authentication of any predecessor trustee, and deliver such Securities so
authenticated; and in case at that time any of the Securities shall not have been authenticated, any successor to the Trustee may authenticate such Securities either in the name of any predecessor hereunder or in the name of the successor to the
Trustee; and in all such cases such certificates shall have the full force which it is anywhere in the Securities or in this Indenture provided that the certificate of the Trustee shall have. 

Section 7.10. Eligibility; Disqualification. The Trustee shall at all times satisfy the requirements of TIA §
310(a). The Trustee shall have a combined 

  
 48 

 
capital and surplus of at least $100,000,000 as set forth in its most recent published annual report of condition. The Trustee shall comply with TIA § 310(b); provided that there
shall be excluded from the operation of TIA § 310(b)(1) any indenture or indentures under which other securities or certificates of interest or participation in other securities of the Company are outstanding if the requirements for such
exclusion set forth in TIA § 310(b)(1) are met. 
 Section 7.11. Preferential Collection of Claims Against
Company. The Trustee shall comply with TIA § 311(a), excluding any creditor relationship listed in TIA § 311(b). A Trustee who has resigned or been removed shall be subject to TIA § 311(a) to the extent indicated. 

ARTICLE 8 

DISCHARGE OF INDENTURE 

Section 8.01. Discharge of Liability on Securities. (a) At any time after all outstanding Securities have become due and
payable, whether at Maturity Date or as a result of the mailing of a notice of redemption or upon a repurchase pursuant to Article 3 hereof, and any pending conversions have been completed (including delivery of all cash and shares of Common
Stock, if any, deliverable pursuant to such conversions in accordance with Section 10.13) then this Indenture shall, subject to Section 8.01(b), cease to be of further effect when (i) the Company delivers to the Trustee all outstanding
Securities (other than Securities replaced pursuant to Section 2.12) for cancellation or (ii) the Company irrevocably deposits with the Trustee money sufficient to pay at maturity or upon redemption or repurchase all outstanding Securities,
including interest thereon to but excluding, maturity or such redemption or repurchase date (other than Securities replaced pursuant to Section 2.12), and if in each such case the Company pays all other sums payable hereunder by the Company.
The Trustee shall acknowledge satisfaction and discharge of this Indenture on demand of the Company accompanied by an Officers’ Certificate and an Opinion of Counsel and at the cost and expense of the Company. 

(b) Notwithstanding clause (a) above, the Company’s obligations in Sections 2.05, 2.06, 2.07, 2.08, 2.09, 2.10, 2.12, 2.13, 7.07,
7.08 and in this Article 8 shall survive until the Securities have been paid in full. Thereafter, the Company’s obligations in Sections 7.07, 8.03 and 8.04 shall survive. 

Section 8.02. Application of Trust Money. The Trustee shall hold in trust money deposited with it pursuant to this
Article 8. It shall apply the deposited money through the Paying Agent and in accordance with this Indenture to the payment of principal of and interest on the Securities in accordance with this Indenture in relation to the conversion of
Securities pursuant to the terms hereof. 

  
 49 

 Section 8.03. Repayment to Company. The Trustee and the Paying Agent shall
promptly turn over to the Company upon request any excess money or securities held by them at any time. 
 Subject to any
applicable abandoned property law, the Trustee and the Paying Agent shall pay to the Company upon written request any money held by them for the payment of principal or interest that remains unclaimed for two years, and, thereafter, Securityholders
entitled to the money and/or securities must look to the Company for payment as general creditors. 
 Section 8.04.
Reinstatement. If the Trustee or Paying Agent is unable to apply any money in accordance with this Article 8 by reason of any legal proceeding or by reason of any order or judgment of any court or governmental authority enjoining, restraining
or otherwise prohibiting such application, the Company’s obligations under this Indenture and the Securities shall be revived and reinstated as though no deposit had occurred pursuant to this Article 8 until such time as the Trustee or Paying
Agent is permitted to apply all such money in accordance with this Article 8; provided that, if the Company has made any payment of interest on or principal of any Securities because of the reinstatement of its obligations, the Company shall
be subrogated to the rights of the Securityholders of such Securities to receive such payment from the money held by the Trustee or Paying Agent. 

ARTICLE 9 

AMENDMENTS 

Section 9.01. Without Consent of Securityholders. The Company and the Trustee may amend this Indenture or the
Securities without notice to or consent of any Securityholder: 
 (a) to provide for conversion rights of Holders of the Securities and the
Company’s repurchase obligations in connection with a Fundamental Change in the event of any reclassification of Common Stock, merger or consolidation, or sale, conveyance, transfer or lease of the Company’s property and assets
substantially as an entirety; 
 (b) to secure the Securities including provisions regarding the circumstances under which collateral may be
released or substituted; 
 (c) evidence the succession of another Person to the Company under the terms of this Indenture or successive
successions, and provide for the assumption of the Company’s obligations to the Holders in the event of a merger or consolidation, or sale, conveyance, transfer or lease of the Company’s property and assets substantially as an entirety;

 (d) to surrender any right or power conferred upon the Company; 

(e) to add to the covenants of the Company for the benefit of the Securityholders; 

  
 50 

 (f) to cure any ambiguity or correct or supplement any inconsistency or defective provision
contained in this Indenture; provided that such modification or amendment does not adversely affect the interests of the Holders of the Securities in any material respect; provided, further, that any amendment made solely to conform
the provisions of this Indenture to the description of the Securities contained in the Offering Memorandum prepared by the Company dated as of October 18, 2011 will not be deemed to adversely affect the interests of the Holders of the Securities;

 (g) to make any provision with respect to matters or questions arising under this Indenture that the Company may deem necessary or
desirable and that shall not be inconsistent with provisions of this Indenture; provided that such change or modification does not, in the good faith opinion of the Board of Directors, adversely affect the interests of the Holders of the
Securities in any material respect; 
 (h) to increase the Conversion Rate in accordance with this Indenture; 

(i) to comply with any requirements of the SEC in connection with qualifying, or maintaining the qualification of, this Indenture under the
TIA; 
 (j) to add or provide for the guarantee of obligations under the Securities or additional obligors on the Securities; or 

(k) to provide for a successor Trustee. 

After an amendment under this Section becomes effective, the Company shall mail to Securityholders a notice briefly describing
such amendment. The failure to give such notice to all Securityholders, or any defect therein, shall not impair or affect the validity of an amendment under this Section. 

Section 9.02. With Consent of Securityholders. The Company and the Trustee may amend this Indenture or the Securities
with the written consent or affirmative vote of the Holders of at least a majority in principal amount of the Securities then outstanding (including consents obtained in connection with a tender offer or exchange offer for the Securities), without
notice to any other Securityholder. However, without the consent of each Holder of an outstanding Security affected, an amendment may not: 

(a) extend the Maturity Date; 

(b) reduce the rate of or extend the time for payment of interest on any Security; 

(c) reduce the principal amount of any Security; 

(d) reduce any amount payable upon redemption or repurchase of any Security; 

(e) impair the right of a Holder to institute suit for payment of any Securities; 

  
 51 

 (f) make any Security payable in a currency other than that stated in the Security; 

(g) change the obligation of the Company to redeem any Security called for redemption in a manner adverse to the Holders; 

(h) change the obligation of the Company to repurchase any Security at the option of the Holder or upon a Fundamental Change in a manner
adverse to the Holders; 
 (i) except as required by this Indenture, adversely affect the right of a Holder to convert any Securities into
cash and, if applicable, shares of Common Stock (or to the extent otherwise applicable, other property, including cash, receivable upon conversion pursuant to the terms of this Indenture) or reduce the Conversion Rate, except as otherwise permitted
pursuant to this Indenture; or 
 (j) make any changes in Section 6.04 or 6.07, the first sentence of this Section 9.02 regarding
the percentage of the Securities required for consent or any modification of this Indenture that does not require the consent of each affected Holder or the second sentence of this Section 9.02. 

It shall not be necessary for the consent of the Securityholders under this Section to approve the particular form of any
proposed amendment, but it shall be sufficient if such consent approves the substance thereof. 
 After an amendment under
this Section becomes effective, the Company shall mail to Securityholders a notice briefly describing such amendment. The failure to give such notice to all Securityholders, or any defect therein, shall not impair or affect the validity of an
amendment under this Section. 
 Section 9.03. Compliance with Trust Indenture Act. Every amendment to this Indenture
or the Securities shall comply with the TIA as then in effect if required to so comply. 
 Section 9.04. Revocation and
Effect of Consents and Waivers. A consent to an amendment or a waiver by a Securityholder of a Security shall bind the Securityholder and every subsequent Securityholder of that Security or portion of the Security that evidences the same debt as
the consenting Securityholder’s Security, even if notation of the consent or waiver is not made on the Security. However, any such Securityholder or subsequent Securityholder may revoke the consent or waiver as to such Securityholder’s
Security or portion of the Security if the Trustee receives the notice of revocation before the date the amendment or waiver becomes effective. After an amendment or waiver becomes effective, it shall bind every Securityholder. An amendment or
waiver becomes effective once (i) the requisite number of consents have been received by the Company or the Trustee and (ii) in the case of an amendment, such amendment has been executed by the Company and the Trustee. 

  
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 The Company may, but shall not be obligated to, fix a record date for the purpose
of determining the Securityholders entitled to give their consent or take any other action described above or required or permitted to be taken pursuant to this Indenture. If a record date is fixed, then notwithstanding the immediately preceding
paragraph, those Persons who were Securityholders at such record date (or their duly designated proxies), and only those Persons, shall be entitled to give such consent or to revoke any consent previously given or to take any such action, whether or
not such Persons continue to be Securityholders after such record date. No consent shall be valid or effective for more than 120 days after such record date unless consents from holders of the principal amount of Securities required hereunder to
give such consent or take such action shall have also been given and not revoked within such 120-day period. 
 Section 9.05.
Notation on or Exchange of Securities. If an amendment changes the terms of a Security, the Trustee may require the Securityholder of the Security to deliver it to the Trustee. The Trustee may place an appropriate notation on the Security
regarding the changed terms and return it to the Securityholder. Alternatively, if the Company or the Trustee so determines, the Company in exchange for the Security shall issue and the Trustee shall authenticate a new Security that reflects the
changed terms. Failure to make the appropriate notation or to issue a new Security shall not affect the validity of such amendment. 

Section 9.06. Trustee to Sign Amendments. The Trustee shall sign any amendment authorized pursuant to this Article 9 if
the amendment does not adversely affect the rights, duties, liabilities or immunities of the Trustee. If it does, the Trustee may but need not sign it. In signing such amendment the Trustee shall be entitled to receive indemnity reasonably
satisfactory to it and to receive, and (subject to Section 7.01) shall be fully protected in relying upon, an Officers’ Certificate and an Opinion of Counsel stating that such amendment is authorized or permitted by this Indenture and that such
amendment is the legal, valid and binding obligation of the Company enforceable against them in accordance with its terms, subject to customary exceptions, and complies with the provisions hereof (including Section 9.03). 

ARTICLE 10 

CONVERSION OF SECURITIES 

Section 10.01. Right to Convert. (a) Subject to and upon compliance with the provisions of this Indenture, on or prior
to the close of business on the Business Day immediately preceding Maturity Date, the Holder of any Securities not previously redeemed or repurchased shall have the right, at such Holder’s option, to convert the principal amount of the
Securities held by such Holder, or any portion of such principal amount which is an integral multiple of $1,000, into cash and, if applicable, fully paid and non-assessable shares of Common Stock (as

  
 53 

 
such shares shall then be constituted) as described in Section 10.13, at the Conversion Rate in effect at such time, by surrender of the Securities so to be converted in whole or in part,
together with any required funds, under the circumstances described in this Section 10.01 and in the manner provided in Section 10.02. The Securities shall be convertible only upon the occurrence of one of the following events: 

(i) prior to May 1, 2035, on any date during any Fiscal Quarter beginning after September 30, 2015 (and only during
such Fiscal Quarter), if the Closing Sale Price of a share of Common Stock was more than 130% of the then current Conversion Price for at least 20 Trading Days in the period of 30 consecutive Trading Days ending on the last Trading Day of the
previous Fiscal Quarter; 
 (ii) at any time on or after May 1, 2035; 

(iii) with respect to any Securities called for redemption pursuant to Section 3.01, until the close of business on the
Business Day immediately prior to the relevant Redemption Date; 
 (iv) if the Company distributes to all or substantially
all holders of Common Stock, rights or warrants entitling them to purchase, for a period of 45 calendar days or less, Common Stock at a price less than the average Closing Sale Price per share of the Common Stock for the ten Trading Days preceding
the declaration date for such distribution; 
 (v) if the Company distributes to all or substantially all holders of Common
Stock, cash or other assets, debt securities or rights to purchase the Company’s securities, which distribution has a per share value exceeding 10% of the Closing Sale Price per share of the Common Stock on the Trading Day preceding the
declaration date for such distribution; 
 (vi) if the Company consolidates with or merges with or into another Person or is
a party to a binding share exchange or conveys, transfers, sells, leases or otherwise disposes of all or substantially all of its properties and assets in each case in a transaction not constituting a Fundamental Change, pursuant to which the Common
Stock would be converted into cash, securities and/or other property, at any time beginning 15 calendar days prior to the date announced by the Company as the anticipated effective date of the transaction and until and including the date which is 15
calendar days after the date that is the actual effective date of such transaction; 
 (vii) if a Fundamental Change occurs,
at any time beginning on the 25th Scheduled Trading Day prior to the anticipated effective date of 

  
 54 

 
the Fundamental Change until 5:00 p.m., New York City time, on the Business Day preceding the Fundamental Change Repurchase Date relating to such Fundamental Change; or 

(viii) during the five consecutive Business Day period immediately following any five consecutive Trading Day period in which
the Trading Price for $1,000 principal amount of the Securities for each day during such five Trading Day period was less than 98% of the Closing Sale Price of a share of Common Stock and multiplied by the then applicable Conversion Rate on
each such day. 
 (b) (i) The Company shall notify the Trustee in writing on or prior to the fifth Business Day following the first day of
each Fiscal Quarter (commencing prior to May 1, 2035, beginning with the Fiscal Quarter ending September 30, 2015) if the condition to conversion set forth in Section 10.01(a) above shall have been satisfied with respect to such
Fiscal Quarter. 
 (ii) The Trustee shall have no obligation to determine the Trading Price of the Securities and whether the
Securities are convertible pursuant to clause (viii) of Section 10.01(a) unless the Company has requested in writing such determination; and the Company shall have no obligation to make such request unless a Holder of the Securities
provides the Company with reasonable written evidence that the Trading Price of $1,000 principal amount of the Securities would be less than 98% of the product of the Closing Sale Price of the Common Stock and the then current Conversion Rate and
requests that the Company requests such determination from the Trustee. At such time, the Company shall instruct the Trustee to, and the Trustee shall, determine the Trading Price of the Securities beginning on the next Trading Day and for each
following Trading Day until the minimum Trading Price threshold is exceeded. If the Company does not instruct the Trustee to determine the Trading Price of the Securities when required, the Trading Price for each day the Company fails to do so will
be deemed to be less than 98% of the product of the Closing Sale Price of the Company’s Common Stock and the then current Conversion Rate. 

The Trustee shall be entitled at its sole discretion to consult with the Company and to request the assistance of the Company
in connection with the Trustee’s duties and obligations pursuant to this Section 10.01(b)(ii) (including without limitation the calculation or determination of the Closing Sale Price and the Trading Price), and the Company shall, if
requested by the Trustee, cooperate with, and provide assistance to, the Trustee in carrying out its duties under this Section 10.01(b)(ii). Upon determination of the Closing Sale Price and the Trading Price, the Trustee shall notify the
Company in writing of such determination. 
 (c) In the case of a distribution contemplated by clauses (iv) or (v) of
Section 10.01(a), the Company shall notify Holders of Securities at least 25 Scheduled Trading 

  
 55 

 
Days prior to the Ex-Date for such distribution (the “Distribution Notice”). Once the Company has given the Distribution Notice, Holders may surrender their Securities for
conversion at any time until the earlier of (i) 5:00 p.m., New York City time, on the Business Day immediately preceding the Ex-Date or (ii) the Company’s announcement that such distribution will not take place. In the event of a distribution
contemplated by clauses (iv) or (v) of Section 10.01(a), Holders may not convert the Securities if the Holders may otherwise participate in such distribution without converting their Securities at the same time that holders of Common Stock
participate as if the Holder had held a number of shares of Common Stock equal to the Conversion Rate multiplied by the principal amount (expressed in thousands) of the Securities held by the Holder. 

(d) Whenever the Securities shall become convertible pursuant to this Section 10.01, the Company or, at the Company’s request, the
Trustee in the name and at the expense of the Company, shall notify the Holders of the event triggering such convertibility in the manner provided in Section 11.02, and the Company shall also publicly announce such information and publish it on
the Company’s website or through another public medium that the Company may use. Any notice so given shall be conclusively presumed to have been duly given, whether or not the Holder receives such notice. The Company shall notify Holders as
promptly as practicable after the Company publicly announces such transaction, which shall be at least 25 Scheduled Trading Days prior to the anticipated effective date of any Fundamental Change in the case of a transaction to which the Company is a
party. 
 (e) Securities in respect of which a Holder has delivered a Fundamental Change Repurchase Notice or a Repurchase Notice exercising
such Holder’s right to require the Company to repurchase such Securities pursuant to Section 3.04 or 3.05, as the case may be, may be converted only if such Fundamental Change Repurchase Notice or a Repurchase Notice, as applicable, is
withdrawn in accordance with Section 3.07 prior to 5:00 p.m., New York City time, on the Business Day immediately preceding the Fundamental Change Repurchase Date or the Repurchase Date, as applicable. 

(f) A Holder of Securities is not entitled to any rights of a Holder of Common Stock until such holder has converted his Securities to Common
Stock, and only to the extent such Securities are deemed to have been converted to Common Stock under this Article 10. 

Section 10.02. Exercise of Conversion Right; Issuance of Common Stock on Conversion; No Adjustment for Interest or
Dividends. In order to exercise the conversion right with respect to any Securities in certificated form, the Company must receive at the office or agency of the Company, which will initially be the office or agency of the Trustee maintained for
that purpose in The City of New York, such Securities with the original or facsimile of the form entitled “Conversion Notice” on the reverse thereof, duly completed and manually signed, together with such Securities duly endorsed
for transfer, together with any other required transfer documents, accompanied by the funds, if any, required by this Section 10.02. Such notice shall also state the name or names (with address or 

  
 56 

 
addresses) in which the certificate or certificates for shares of Common Stock which shall be issuable on such conversion shall be issued, and shall be accompanied by transfer or similar taxes,
if required pursuant to Section 10.08. 
 In order to exercise the conversion right with respect to any interest in a
Global Security, the Holder must complete, or cause to be completed, the appropriate instruction form for conversion pursuant to the Depositary’s book-entry conversion program; deliver, or cause to be delivered, by book-entry delivery an
interest in such Global Security; furnish appropriate endorsements and transfer documents if required by the Company or the Trustee or Conversion Agent; and pay the funds, if any, required by this Section 10.02 and any transfer or similar taxes
if required pursuant to Section 10.08. 
 After satisfaction of the requirements for conversion set forth above, the
Company will deliver cash and Common Stock, if any, in accordance with Section 10.13. In case any Securities of a denomination greater than $1,000 shall be surrendered for partial conversion, and subject to Section 2.03, the Company shall
execute and the Trustee shall authenticate and deliver to the Holder of the Securities so surrendered, without charge to the Holder, a new Security or Securities in authorized denominations in an aggregate principal amount equal to the unconverted
portion of the surrendered Securities. 
 Each conversion shall be deemed to have been effected as to any such Securities (or
portion thereof) on the date on which the requirements set forth above in this Section 10.02 have been satisfied as to such Securities (or portion thereof) (the “Conversion Date”) and such Securities will be deemed to have been
converted immediately prior to 5:00 p.m., New York City time, on the Conversion Date. The Person in whose name the certificate or certificates for any shares of Common Stock delivered upon conversion is registered shall be treated as a stockholder
of record as of the close of business on the last Trading Day of the related Conversion Observation Period. 
 Upon the
conversion of an interest in a Global Security, the Trustee (or other Conversion Agent appointed by the Company), or the custodian for the Global Security at the direction of the Trustee (or other Conversion Agent appointed by the Company), shall
make a notation on such Global Security as to the reduction in the principal amount represented thereby. The Company shall notify the Trustee in writing of any conversions of Securities effected through any Conversion Agent other than the Trustee.

 Section 10.03. Cash Payments in Lieu of Fractional Shares. No fractional shares of Common Stock or scrip
certificates representing fractional shares shall be issued upon conversion of Securities. If more than one Security shall be surrendered for conversion at one time by the same Holder, the number of full shares that shall be issuable upon conversion
shall be computed on the basis of the aggregate principal amount of the Securities (or specified portions thereof 

  
 57 

 
to the extent permitted hereby) so surrendered. If any fractional share of stock would be issuable upon the conversion of any Security or Securities, the Company shall make an adjustment and
payment therefor in cash to the Holder of Securities at a price equal to the Closing Sale Price on the last Trading Day of the Conversion Observation Period. 

Section 10.04. Conversion Rate. Each $1,000 principal amount of the Securities shall be convertible into cash and/or the
number of shares of Common Stock, if any, based upon the Conversion Rate, subject to adjustment as provided in Section 10.05 and Section 10.06. The Company shall settle its obligation to convert the Securities as provided in Section 10.13. 

Section 10.05. Adjustment to Conversion Rate upon a Non-Stock Change of Control. 

(a) If and only to the extent a Holder elects to convert Securities at any time following the date on which a Non-Stock Change of Control
becomes effective (the “Effective Date”) but before 5:00 p.m., New York City time, on the Business Day immediately preceding the related Fundamental Change Repurchase Date, the Company shall increase the Conversion Rate applicable
to such converted Securities by a number of additional shares of Common Stock (the “Additional Shares”) as set forth below. The number of Additional Shares of Common Stock shall be determined by reference to the table below, based
on the Effective Date and the price (the “Stock Price”) paid per share for the Common Stock in the Non-Stock Change of Control. If holders of Common Stock receive only cash in the Non-Stock Change of Control, the Stock Price shall
be the cash amount paid per share. Otherwise, the Stock Price shall be the average of the Closing Sale Prices of the Common Stock on the five Trading Days prior to but not including the Effective Date of such Non-Stock Change of Control. 

  
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 The following table sets forth the number of Additional Shares per $1,000
principal amount of Securities by which the Conversion Rate shall be increased for conversions of Securities in connection with a Non-Stock Change of Control pursuant to Section 10.01(a)(vii) based on the Effective Date and Stock Price for the
Non-Stock Change of Control: 
  

																																																	
	 	 	Stock Price	 
	 Effective Date
	 	$17.89	 	 	$20.00	 	 	$22.75	 	 	$25.00	 	 	$27.50	 	 	$30.00	 	 	$35.00	 	 	$40.00	 	 	$45.00	 	 	$50.00	 	 	$60.00	 	 	$70.00	 
	 June 16, 2015
	 	 	12.8993	  	 	 	10.0176	  	 	 	7.3521	  	 	 	5.7898	  	 	 	4.4923	  	 	 	3.5209	  	 	 	2.2095	  	 	 	1.4094	  	 	 	0.9010	  	 	 	0.5692	  	 	 	0.2010	  	 	 	0.0407	  
	 November 1, 2016
	 	 	12.8993	  	 	 	9.4381	  	 	 	6.7433	  	 	 	5.1947	  	 	 	3.9338	  	 	 	3.0098	  	 	 	1.8010	  	 	 	1.0945	  	 	 	0.6643	  	 	 	0.3945	  	 	 	0.1132	  	 	 	0.0028	  
	 November 1, 2017
	 	 	12.8993	  	 	 	9.1169	  	 	 	6.3438	  	 	 	4.7802	  	 	 	3.5318	  	 	 	2.6368	  	 	 	1.5035	  	 	 	0.8706	  	 	 	0.5016	  	 	 	0.2796	  	 	 	0.0612	  	 	 	0.0000	  
	 November 1, 2018
	 	 	12.8993	  	 	 	8.8064	  	 	 	5.9007	  	 	 	4.3047	  	 	 	3.0661	  	 	 	2.2068	  	 	 	1.1713	  	 	 	0.6318	  	 	 	0.3369	  	 	 	0.1701	  	 	 	0.0192	  	 	 	0.0000	  
	 November 1, 2019
	 	 	12.8993	  	 	 	8.4043	  	 	 	5.2923	  	 	 	3.6529	  	 	 	2.4409	  	 	 	1.6478	  	 	 	0.7730	  	 	 	0.3706	  	 	 	0.1739	  	 	 	0.0726	  	 	 	0.0000	  	 	 	0.0000	  
	 November 1, 2020
	 	 	12.8993	  	 	 	7.7506	  	 	 	4.2623	  	 	 	2.5814	  	 	 	1.4773	  	 	 	0.8559	  	 	 	0.3082	  	 	 	0.1212	  	 	 	0.0457	  	 	 	0.0092	  	 	 	0.0000	  	 	 	0.0000	  
	 November 5, 2021
	 	 	12.8993	  	 	 	7.0022	  	 	 	0.9582	  	 	 	0.0000	  	 	 	0.0000	  	 	 	0.0000	  	 	 	0.0000	  	 	 	0.0000	  	 	 	0.0000	  	 	 	0.0000	  	 	 	0.0000	  	 	 	0.0000	  

 (b) If the Stock Price or Effective Date for a Non-Stock Change of Control are not set forth in the table
above, then: 
 (1) if the Stock Price is between two Stock Price amounts on the table or the Effective Date is between two
Effective Dates on the table, the number of Additional Shares of Common Stock will be determined by straight-line interpolation between the number of Additional Shares of Common Stock set forth for the higher and lower Stock Price amounts and the
two dates, as applicable, based on a 365-day year; 
 (2) if the Stock Price in excess of $75.00 per share (subject to
adjustment), no Additional Shares of Common Stock shall be issued upon conversion as set forth in Section 10.05(c); or 

(3) if the Stock Price less than $17.89 per share (subject to adjustment), no Additional Shares of Common Stock shall be issued
upon conversion as set forth in Section 10.05(c). 
 Notwithstanding the foregoing, in no event will the Conversion Rate
as adjusted pursuant to this Section 10.05 exceed 55.8971 per $1,000 principal amount of the Securities. 
 (c) The numbers of
Additional Shares of Common Stock set forth in the table in Section 10.05(a) shall be adjusted as of any date on which the Conversion Rate is adjusted in the same manner in which the Conversion Rate is adjusted. The Stock Prices set forth in
the table in Section 10.05(a) shall be adjusted, as of any date on which the Conversion Rate is adjusted, to equal the Stock Price applicable immediately prior to such adjustment multiplied by a fraction, of which: 

(1) the numerator shall be the Conversion Rate immediately prior to the adjustment; and 

(2) the denominator shall be the Conversion Rate as so adjusted. 

  
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 (d) The Company shall provide written notice to all Holders and to the Trustee as promptly as
practicable after the Company publicly announces such Non-Stock Change of Control, which shall be at least 20 calendar days prior to the anticipated Effective Date of a Non-Stock Change of Control to which the Company is a party. 

Section 10.06. Adjustment of Conversion Rate. The Conversion Rate shall be adjusted from time to time by the
Company, without duplication, as follows: 
 (a) In case the Company shall, at any time or from time to time while any of the Securities are
outstanding, pay a dividend in shares of Common Stock or make a distribution in shares of Common Stock to all or substantially all holders of its outstanding shares of Common Stock, then the Conversion Rate in effect immediately prior to the opening
of business on the Ex-Date for such dividend or other distribution shall be increased by multiplying such Conversion Rate by a fraction, 

(1) the numerator of which shall be the sum of (A) the number of shares of Common Stock outstanding immediately prior to
the opening of business on the Ex-Date for such dividend or other distribution plus (B) the total number of shares of Common Stock constituting such dividend or other distribution; and 

(2) the denominator of which shall be the number of shares of Common Stock outstanding immediately prior to the opening of
business on the Ex-Date for such dividend or other distribution, 
 such increase to become effective immediately after the opening of
business on the Ex-Date for such dividend or other distribution. If any dividend or distribution of the type described in this Section 10.06(a) is declared but not so paid or made, the Conversion Rate shall again be adjusted to the Conversion
Rate that would then be in effect if such dividend or distribution had not been declared. 
 (b) In case outstanding shares of Common Stock
shall be subdivided or split into a greater number of shares of Common Stock, the Conversion Rate in effect immediately prior to the opening of business on the effective date for such subdivision shall be proportionately increased, and conversely,
in case outstanding shares of Common Stock shall be combined into a smaller number of shares of Common Stock, the Conversion Rate in effect immediately prior to the opening of business on the effective date for such combination shall be
proportionately reduced, such increase or reduction, as the case may be, to become effective immediately after the opening of business on the effective date for such subdivision or combination. 

  
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 (c) In case the Company shall issue rights or warrants (other than any rights or warrants as to
which an adjustment was effected pursuant to Section 10.06(d)) to all or substantially all holders of its outstanding shares of Common Stock entitling them to subscribe for or purchase, for a period of up to 45 calendar days, shares of Common
Stock at a price per share less than the Current Market Price on the declaration date for such issuance, the Conversion Rate shall be adjusted so that the same shall equal the rate determined by multiplying the Conversion Rate in effect immediately
prior to the opening of business on the Ex-Date for such issuance by a fraction, 
 (1) the numerator of which shall be the
sum of (A) the number of shares of Common Stock outstanding immediately prior to the opening of business on the Ex-Date for such issuance plus (B) the total number of additional shares of Common Stock offered for subscription or
purchase, and 
 (2) the denominator of which is the sum of (A) the number of shares of Common Stock outstanding
immediately prior to the opening of business on the Ex-Date for such issuance plus (B) the total number of shares that the aggregate offering price of the shares so offered would purchase at such Current Market Price. 

Such adjustment shall be successively made whenever any such rights or warrants are distributed, and shall become effective
immediately after the opening of business on the Ex-Date for such distribution. To the extent that shares of Common Stock are not delivered after the expiration of such rights or warrants, the Conversion Rate shall be readjusted to the Conversion
Rate that would then be in effect had the adjustments made upon the issuance of such rights or warrants been made on the basis of delivery of only the number of shares of Common Stock actually delivered. If such rights or warrants are not so issued,
the Conversion Rate shall again be adjusted to be the Conversion Rate that would then be in effect if such rights or warrants had not been issued. In determining whether any rights or warrants entitle the holders to subscribe for or purchase shares
of Common Stock at less than such Current Market Price of the Common Stock on the declaration date for such issuance, and in determining the aggregate offering price of such shares of Common Stock of the Common Stock on the declaration date for such
issuance, there shall be taken into account any consideration received by the Company for such rights or warrants and any amount payable on exercise or conversion thereof, with the value of such consideration, if other than cash, to be determined by
the Board of Directors. 
 (d) Except as set forth in Section 10.06(b), in case the Company shall, by dividend or otherwise, distribute
to all or substantially all holders of its outstanding shares of Common Stock shares of any class of Capital Stock of the Company (other than the Common Stock) or evidences of its indebtedness or assets, including securities, but excluding
(i) any rights or warrants as to which an adjustment was effected pursuant to Section 10.06(c), (ii) any dividends or distributions in connection with a reclassification, 

  
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changes, consolidation, merger, combination or sale or conveyance to which Section 10.07 applies, (iii) any dividends or distributions paid exclusively in cash or (iv) any
dividends or distributions as to which an adjustment was effected pursuant to Section 10.06(a) (any of the foregoing hereinafter in this Section 10.06(d)) called the “Distributed Assets”), then, in each such case, the
Conversion Rate shall be increased so that the same shall be equal to the rate determined by multiplying the Conversion Rate in effect immediately prior to the opening of business on the Ex-Date for such distribution by a fraction, 

(1) the numerator of which shall be the Current Market Price on the Ex-Date for such distribution; and 

(2) the denominator of which shall be the Current Market Price on the Ex-Date for such distribution minus the Fair
Market Value (as determined by the Board of Directors, whose determination shall be conclusive, and described in a resolution of the Board of Directors) of the portion of the Distributed Assets so distributed applicable to one share of Common Stock,

 such adjustment to become effective immediately after the opening of business on the Ex-Date for such distribution; provided that
if the then Fair Market Value (as so determined) of the portion of the Distributed Assets so distributed applicable to one share of Common Stock is equal to or greater than the Current Market Price on such Ex-Date in lieu of the foregoing
adjustment, adequate provision shall be made so that each Holder of Securities shall have the right to receive, at the same time and upon the same terms as holders of Common Stock, in addition to the cash and the shares of Common Stock, if any,
issuable upon conversion of Securities, for each $1,000 principal amount of Securities the amount of Distributed Assets such Holder would have received had such Holder owned a number of shares of Common Stock equal to the Conversion Rate in effect
immediately prior to the record date for the dividend or distribution. If such dividend or distribution is not so paid or made, the Conversion Rate shall again be adjusted to be the Conversion Rate that would then be in effect if such dividend or
distribution had not been declared. 
 If the Board of Directors determines the Fair Market Value of any distribution for
purposes of this Section 10.06(d) by reference to the actual or when issued trading market for any Distributed Assets comprising all or part of such distribution, it must in doing so consider the prices in such market over the same period (the
“Reference Period”) used in computing the Current Market Price of the Common Stock to the extent possible, unless the Board of Directors determines in good faith that determining the Fair Market Value during the Reference Period
would not be in the best interest of the Holders. 
 Notwithstanding the foregoing, in the event any such distribution
consists of shares of Capital Stock of, or similar equity interests in, one or more of the Company’s Subsidiaries (a “Spin-Off”), the Conversion Rate in effect 

  
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immediately before the Ex-Date for the distribution will be increased by multiplying the Conversion Rate by an adjustment factor equal to the sum of the Daily Adjustments (as defined below) for
each of the 10 consecutive Trading Days beginning on the Ex-Date for the distribution. The “Daily Adjustment” for any given Trading Day is equal to the fraction: 

(1) the numerator of which is the Closing Sale Price of the Common Stock on that Trading Day plus the Closing Sale Price
of the portion of those shares of Capital Stock or similar equity interests so distributed applicable to one share of the Common Stock on that Trading Day, and 

(2) the denominator of which is the product of 10 and the Closing Sale Price of the Common Stock on that Trading Day. 

The adjustment to the Conversion Rate in the event of a Spin-Off will occur retroactively on the Ex-Date for the distribution.
In the event that such dividend or distribution is not so paid or made, the Conversion Rate shall again be adjusted to be the Conversion Rate that would then be in effect if such dividend or distribution had not been declared. 

For purposes of this Section 10.06(d) and Sections 10.06(a) and 10.06(c), any dividend or distribution to which this
Section 10.06(d) is applicable that also includes shares of Common Stock, or rights or warrants to subscribe for or purchase shares of Common Stock (or both), shall be deemed instead to be (1) a dividend or distribution of the evidences of
indebtedness, assets or shares of Capital Stock other than such shares of Common Stock or rights or warrants (and any Conversion Rate adjustment required by this Section 10.06(d) with respect to such dividend or distribution shall then be made)
immediately followed by (2) a dividend or distribution of such shares of Common Stock or such rights or warrants (and any further Conversion Rate adjustment required by Section 10.06(a) or 10.06(c) with respect to such dividend or
distribution shall then be made), except the “Ex-Date for such dividend or distribution” shall be substituted for the “Ex-Date for such dividend or other distribution” within the meaning of Section 10.06(a) and the
“Ex-Date for such issuance” within the meaning of Section 10.06(c) and any shares of Common Stock included in such dividend or distribution shall not be deemed “outstanding immediately prior to the opening of business on the
Ex-Date for such dividend or distribution” within the meaning of Section 10.06(a). 

  
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 (e) In case the Company shall, by dividend or otherwise, distribute to all or substantially all
holders of its Common Stock cash (including any quarterly cash dividend, but excluding (x) any dividend or distribution in connection with the liquidation, dissolution or winding up of the Company, whether voluntary or involuntary and
(y) any dividend or distribution in connection with a merger, consolidation or sale to which Section 10.07 applies), then the Conversion Rate shall be increased so that the same shall equal the rate determined by multiplying the Conversion
Rate in effect immediately prior to the opening of business on the Ex-Date for such distribution by a fraction, 
 (1) the
numerator of which shall be the Current Market Price on the Ex-Date for such distribution; and 
 (2) the denominator of
which shall be the Current Market Price of the Common Stock on the Ex-Date for such distribution minus the amount of the cash dividend or distribution applicable to one share of Common Stock, 

such adjustment to be effective immediately after the opening of business on the Ex-Date for such distribution; provided that in the
event the portion of the cash so distributed applicable to one share of Common Stock is equal to or greater than the Current Market Price, in lieu of the foregoing adjustment, adequate provision shall be made so that each Holder of Securities shall
have the right to receive at the same time as holders of the Common Stock for each $1,000 principal amount of Securities the amount of cash such Holder would have received had such Holder owned a number of shares of Common Stock equal to the
Conversion Rate in effect immediately prior to the record date for the dividend or distribution. If such dividend or distribution is not so paid or made, the Conversion Rate shall again be adjusted to be the Conversion Rate that would then be in
effect if such dividend or distribution had not been declared. 
 (f) In case a tender or exchange offer made by the Company or any
Subsidiary for all or any portion of the Common Stock shall expire and such tender or exchange offer (as amended upon the expiration thereof) shall require the payment to stockholders of consideration per share of Common Stock having a Fair Market
Value (which, if other than cash, shall be as determined by the Board of Directors, whose determination shall be conclusive and described in a resolution of the Board of Directors) that as of the last time (the “Expiration Time”)
tenders or exchanges may be made pursuant to such tender or exchange offer (as it may be amended) exceeds the Closing Sale Price of a share of Common Stock on the Trading Day next succeeding the Expiration Time, the Conversion Rate shall be
increased so that the same shall equal the rate determined by multiplying the Conversion Rate in effect at the close of business on the Trading Day next succeeding the Expiration Time by a fraction, 

(1) the numerator of which shall be the sum of (x) the Fair Market Value (determined as aforesaid) of the aggregate
consideration paid to stockholders for all shares accepted for purchase the tender or exchange offer (the “Purchased Shares”) and (y) the product of the number of shares of Common Stock outstanding (less any Purchased Shares)
at the Expiration Time and the Closing Sale Price of a share of Common Stock on the Trading Day next succeeding the Expiration Time, and 

(2) the denominator of which shall be the product of the number of shares of Common Stock outstanding (including any Purchased
Shares) at the Expiration Time multiplied by the Closing Sale Price of a share of Common Stock on the Trading Day next succeeding the Expiration Time, 

  
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 such adjustment to become effective immediately after the close of business on the Trading Day
next succeeding the Expiration Time. If the Company is obligated to purchase shares pursuant to any such tender or exchange offer, but the Company is permanently prevented by applicable law from effecting any such purchases or any such purchases are
rescinded, the Conversion Rate shall again be adjusted to be the Conversion Rate that would then be in effect if such tender or exchange offer had not been made for the shares not purchased. In no event shall the Conversion Rate be reduced pursuant
to this Section 10.06(f). 
 (g) Subject to Section 6.09, the Company may in its sole discretion make such increases in the
Conversion Rate, in addition to those required by Sections 10.06(a)-(f), as the Board of Directors considers to be advisable to avoid or diminish any U.S. federal income tax to holders of Common Stock resulting from any dividend or distribution of
stock (or rights to acquire stock) or from any event treated as such for income tax purposes; provided that such increase in the Conversion Rate shall not adversely affect the interests of the Holders of Securities (after taking into account
U.S. federal income tax and other consequences of such increase). 
 (h) Subject to Section 6.09, to the extent permitted by
applicable law, the Company from time to time may increase the Conversion Rate by any amount for any period of time if the period is at least 20 Business Days, the increase is irrevocable during the period and the Board of Directors shall have made
a determination that such increase would be in the best interests of the Company, which determination shall be conclusive. Whenever the Conversion Rate is increased pursuant to the preceding sentence, the Company shall mail to Holders of record of
the Securities a notice of the increase, which notice will be given at least 15 days prior to the effectiveness of any such increase, and such notice shall state the increased Conversion Rate and the period during which it will be in effect. 

(i) No adjustment in the Conversion Rate shall be required unless such adjustment would require an increase or decrease of at least one
percent (1%) in such rate; provided that any adjustments that by reason of this Section 10.06(i) are not required to be made shall be carried forward and the Company shall make such carry forward adjustments, regardless of whether
the aggregate adjustment is less than 1%, (x) annually on the anniversary of the first date of the issue of the Securities and otherwise (y)(1) on each day from and after the 25th Scheduled Trading Day prior to the maturity of the Securities
(whether its Maturity Date or otherwise), (2) if the Securities are called for redemption, on each day from and including the 30th calendar day before the Redemption Date and (3) in connection with a Fundamental Change or Non-Stock Change
of Control on each day from and including the 10th calendar day prior to the anticipated Effective 

  
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Date of the Fundamental Change or Non-Stock Change of Control to the Effective Date of the Fundamental Change or Non-Stock Change of Control. All calculations under this Article 10 shall be made
by the Company and shall be made to the nearest cent or to the nearest one-ten thousandth (1/10,000) of a share, as the case may be. No adjustment need be made for rights to purchase Common Stock pursuant to a Company plan for reinvestment of
dividends or interest or for any issuance of Common Stock or convertible or exchangeable securities or rights to purchase Common Stock or convertible or exchangeable securities. Interest will not accrue on any cash into which the Securities are
convertible. 
 (j) Whenever the Conversion Rate is adjusted as herein provided, the Company will issue a press release through Business
Wire containing the relevant information and make this information available on the Company’s website or through another public medium as the Company may use at that time. In addition, the Company shall promptly file with the Trustee and any
Conversion Agent other than the Trustee an Officers’ 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 Trust Officer of the Trustee
shall have received such Officers’ Certificate, the Trustee shall not be deemed to have knowledge of any adjustment of the Conversion Rate and may assume that the last Conversion Rate of which it has actual 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 mail such notice
of such adjustment of the Conversion Rate to the Holder of each Securities at his last address appearing on the Register, within 20 calendar days after execution thereof. Failure to deliver such notice shall not affect the legality or validity of
any such adjustment. 
 (k) In any case in which this Section 10.06 provides that an adjustment shall become effective (1) upon
the opening of business on an Ex-Date, (2) immediately after the record date for an event, or (3) after the Expiration Time for any tender or exchange offer pursuant to Section 10.06(f), (each a “Determination Date”),
the Company may elect to defer until the occurrence of the applicable distribution, issuance of Common Stock or payment (an “Adjustment Event”) triggering a Conversion Rate adjustment (x) issuing to the Holder of any Securities
converted after such Determination Date and before the occurrence of such Adjustment Event, the additional cash, shares of Common Stock, if any, or other securities or property issuable upon such conversion by reason of the adjustment required by
such Adjustment Event over and above the cash, the Common Stock, or combination of cash and Common Stock, issuable upon such conversion before giving effect to such adjustment and (y) paying to such Holder any amount in cash in lieu of any
fractional share.  
 (l) For purposes of this Section 10.06, the number of shares of Common Stock at any time outstanding shall
not include shares held in the treasury of the Company but shall include shares issuable in respect of scrip certificates issued in lieu of fractions of shares of Common Stock. 

  
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 (m) No adjustment to the Conversion Rate shall be made pursuant to Section 10.06 on account
of a distribution on Common Stock, if the Holders of the Securities will otherwise participate for each $1,000 principal amount of Securities in such distribution without conversion as a result of holding the Securities at the same time and on the
same terms as a holder of a number of shares of Common Stock equal to the Conversion Rate. 
 (n) Notwithstanding the foregoing, no
adjustment to the Conversion Rate need be made for: 
 (i) 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, or 

(ii) the issuance of any shares of Common Stock or options or rights to purchase those shares pursuant to any present or future
employee, director or consultant benefit plan or program of or assumed by the Company or any of its Subsidiaries. 
 (o) Notwithstanding
anything to the contrary in this Indenture, if an event occurs that would result in an increase in the Conversion Rate by an amount in excess of limitations imposed by any shareholder approval rules or listing standards of any national securities
exchange that are applicable to the Company, the Company will, at its option, either obtain stockholder approval of any issuance of Common Stock upon conversion of the Securities in excess of such limitations or deliver cash in lieu of any shares of
Common Stock otherwise deliverable upon conversions in excess of such limitations based on the VWAP Price on each Trading Day of the relevant Observation Period in respect of which, in lieu of delivering shares of Common Stock, the Company delivers
cash pursuant to this Section 10.06(o). 
 (p) Notwithstanding this Section 10.06 and the other provisions of Article 10, if any
Conversion Rate adjustment becomes effective, or any Ex-Date (relating to a required Conversion Rate adjustment) occurs, during the period beginning on a Conversion Date and ending on close of business on the last Trading Day of the corresponding
Conversion Observation Period, the Board of Directors may make adjustments to the Conversion Rate or the amount of cash or number of shares of Common Stock issuable upon conversion of the Securities, as may be necessary or appropriate to effect the
intent of this Section 10.06 and the other provisions of Article 10 and to avoid unjust or inequitable results, as determined in good faith by the Board of Directors. Any adjustment made pursuant to this Section 10.06(p) shall apply in
lieu of the adjustment or other term that would otherwise be applicable. 

  
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 Section 10.07. Effect of Reclassification, Consolidation, Merger or
Sale. If any of the following events occur, namely: 
 (a) any reclassification or change of the outstanding Common Stock (other
than as a result of a subdivision or combination), 
 (b) any consolidation or merger of the Company with or into another Person or 

(c) any sale, lease, transfer, conveyance or other disposition of all or substantially all of the Company’s assets and those of its
Subsidiaries taken as a whole to any other Person or Persons, 
 as a result of which holders of Common Stock shall be entitled to receive
stock, other securities or other property or assets (including cash or any combination thereof) with respect to or in exchange for such Common Stock, in each case, at the effective time of such transaction, the Company or the successor, purchasing
corporation or transferee, as the case may be, shall execute with, and deliver to, the Trustee a supplemental indenture (which shall comply with the Trust Indenture Act as in force at the date of execution of such supplemental indenture, if such
supplemental indenture is then required to so comply) providing that such Securities shall, without the consent of any Holders of Securities, become convertible into the kind and amount of shares of stock, other securities or other property or
assets (including cash or any combination thereof) (the “Applicable Consideration”) that such Holder would have been entitled to receive upon such reclassification, change, consolidation, merger, sale, lease, transfer, conveyance or
other disposition, had each $1,000 principal amount of Securities held by such Holder been converted into a number of shares of Common Stock equal to the Conversion Rate immediately prior to such reclassification, change, consolidation, merger,
sale, lease, transfer, conveyance or other disposition, except that at and after the effective time of the transaction (w) the amount otherwise payable in cash upon conversion of the Securities will continue to be payable in cash, (x) the
Company will continue to have the right to determine the form of consideration to be paid or delivered, as the case may be, in respect of the remainder, if any, of the Company’s conversion obligation in excess of the aggregate principal amount
of the Securities being converted, (y) the number of shares of the Company’s Common Stock otherwise deliverable upon conversion of the Securities will instead be deliverable in the amount and type of Applicable Consideration that a holder
of that number of shares of the Company’s common stock would have received in such transaction and (z) the VWAP Price will be calculated based on the value of a unit of Applicable Consideration that a holder of one share of the
Company’s Common Stock would have received in such transaction; provided that any increase in the Conversion Rate in connection with a Non-Stock Change of Control under Section 10.05 shall be in effect under this Section 10.07
only until the close of business on the Fundamental Change Repurchase Date relating to the Non-Stock Change of Control. If the transaction causes the Common Stock to be converted into, or exchanged for, or constitute solely the right to receive more
than a single type of consideration (determined based in part upon any form of stockholder election), the Applicable Consideration into which the Debentures 

  
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will be convertible or used to calculate the VWAP Price, as the case may be, will be deemed to be the weighted average of the types and amounts of consideration received by the holders of Common
Stock that affirmatively make such an election. The Company shall notify holders, the Trustee and the Conversion Agent of that weighted average as soon as practicable after such determination is made. The Company shall not become a party to any such
transaction unless its terms are consistent with the foregoing. If, in the case of any such reclassification, change, consolidation, merger, sale, lease, transfer, conveyance or other disposition, the stock or other securities and assets receivable
thereupon by a holder of Common Stock includes shares of stock or other securities and assets of a corporation other than the successor or purchasing corporation, as the case may be, in such reclassification, change, consolidation, merger, sale,
lease, transfer, conveyance or other disposition, then such supplemental indenture shall also be executed by such other corporation and shall contain such additional provisions to protect the interests of the Holders of the Securities as the Board
of Directors shall reasonably consider necessary by reason of the foregoing, including to the extent practicable the provisions providing for the conversion rights set forth in this Article 10. 

The Company shall cause notice of the execution of such supplemental indenture to be mailed to each Holder, at the address of
such Holder as it appears on the register of the Securities maintained by the Registrar, within 20 days after execution thereof. Failure to deliver such notice shall not affect the legality or validity of such supplemental indenture. 

The above provisions of this Section 10.07 shall similarly apply to successive reclassifications, changes, consolidations,
mergers, sales, leases, transfers, conveyances or other dispositions. 
 If this Section 10.07 applies to any event or
occurrence, Section 10.06 shall not apply. 
 Section 10.08. Taxes on Shares Issued. The issue of
stock certificates on conversions of Securities shall be made without charge to the converting Holder of Securities for any documentary, stamp or similar issue or transfer tax in respect of the issue thereof. The Company shall not, however, be
required to pay any such tax which may be payable in respect of any transfer involved in the issue and delivery of stock in any name other than that of the Holder of any Securities converted, and the Company shall not be required to issue or deliver
any such stock certificate unless and until the Person or Persons requesting the issue thereof shall have paid to the Company the amount of such tax or shall have established to the satisfaction of the Company that such tax has been paid. 

Section 10.09. Reservation of Shares, Shares to be Fully Paid; Compliance with Governmental Requirements; Listing of
Common Stock. The Company shall provide, free from preemptive rights, out of its authorized but 

  
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unissued shares or shares held in treasury, sufficient shares of Common Stock to provide for the conversion of the Securities, including any Additional Shares, from time to time as such
Securities are presented for conversion. 
 Before taking any action which would cause an adjustment increasing the
Conversion Rate to an amount that would cause the Conversion Price to be reduced below the then par value, if any, of the shares of Common Stock issuable upon conversion of the Securities, the Company will take all corporate action which may, in the
opinion of its counsel, be necessary in order that the Company may validly and legally issue shares of such Common Stock at such adjusted Conversion Rate. 

The Company covenants that all shares of Common Stock which may be issued upon conversion of Securities will upon issue be
fully paid and non-assessable by the Company and free from all taxes, liens and charges with respect to the issue thereof. 

The Company covenants that, if any shares of Common Stock to be provided for the purpose of conversion of Securities hereunder
require registration with or approval of any governmental authority under any federal or state law before such shares may be validly issued upon conversion, the Company will in good faith and as expeditiously as possible, to the extent then
permitted by the rules and interpretations of the Commission (or any successor thereto), endeavor to secure such registration or approval, as the case may be. 

The Company further covenants that, if at any time the Common Stock shall be listed on The Nasdaq Global Select Market or any
other national securities exchange or automated quotation system, the Company will, if permitted by the rules of such exchange or automated quotation system, list and keep listed, so long as the Common Stock shall be so listed on such exchange or
automated quotation system, all Common Stock issuable upon conversion of the Securities; provided that if the rules of such exchange or automated quotation system permit the Company to defer the listing of such Common Stock until the first
conversion of the Securities into Common Stock in accordance with the provisions of this Indenture, the Company covenants to list such Common Stock issuable upon conversion of the Securities in accordance with the requirements of such exchange or
automated quotation system at such time. 
 Section 10.10. Responsibility of Trustee. The Trustee and any
other Conversion Agent shall not at any time be under any duty or responsibility to any Holder of Securities to determine the Conversion Rate or whether any facts exist which may require any adjustment 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 

  
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amount) of any shares of Common Stock, or of any capital stock, other securities or other assets or property, which may at any time be issued or delivered upon the conversion of any Securities;
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 Securities for the purpose of conversion or to comply with any of the duties, responsibilities or covenants of the Company contained in this Article 10. 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 10.07 relating either to the kind or amount of shares of capital stock or other securities or other assets or property (including cash) receivable by Holders of Securities upon the conversion of their Securities after any event referred
to in such Section 10.07 or to any adjustment to be made with respect thereto, but, subject to the provisions of Section 9.01, may accept as conclusive evidence of the correctness of any such provisions, and shall be protected in relying
upon, the Officers’ Certificate (which the Company shall be obligated to file with the Trustee prior to the execution of any such supplemental indenture) with respect thereto. 

Section 10.11. Notice to Holders Prior to Certain Actions. In case: 

(a) the Company shall declare a dividend (or any other distribution) on its Common Stock that would require an adjustment in the Conversion
Rate pursuant to Section 10.06; or 
 (b) the Company shall authorize the granting to the Holders of all or substantially all of its
Common Stock or rights or warrants to subscribe for or purchase any share of any class of its Capital Stock or any other rights or warrants that would require an adjustment in the Conversion Rate pursuant to Section 10.06; 

(c) of any reclassification or reorganization of the Common Stock of the Company (other than a subdivision or combination of its outstanding
Common Stock, or a change in par value, or from par value to no par value, or from no par value to par value), or of any consolidation or merger to which the Company is a party and for which approval of any stockholders of the Company is required,
or of the sale or transfer of all or substantially all of the assets of the Company; or 
 (d) of the voluntary or involuntary dissolution,
liquidation or winding up of the Company; 
 then the Company shall cause to be filed with the Trustee and to be mailed to each Holder of
Securities at its address appearing on the Register provided for in Section 2.05 of this Indenture, as promptly as possible but in any event at least ten calendar days prior to the applicable date hereinafter specified, a notice stating (x)

  
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the date on which a record is to be taken for the purpose of such dividend, distribution or rights or warrants, or, if a record is not to be taken, the date as of which the holders of Common
Stock of record to be entitled to such dividend, distribution or rights are to be determined, or (y) the date on which such reclassification, reorganization, consolidation, merger, sale, transfer, 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 reclassification,
reorganization, consolidation, merger, sale, transfer, dissolution, liquidation or winding up; provided that a separate notice shall not be required under this Section if such notice has been effectively provided under another provision of
this Indenture. Failure to give such notice, or any defect therein, shall not affect the legality or validity of such dividend, distribution, reclassification, consolidation, merger, sale, transfer, dissolution, liquidation or winding up. 

Section 10.12. Stockholder Rights Plans. To the extent that any stockholder rights plan (i.e., a
“poison pill”) adopted by the Company is in effect upon conversion of the Security, the converting Holder shall receive, in addition to any shares of Common Stock issued in connection with such conversion, the rights under the rights plan,
unless prior to such conversion, the rights plan has terminated or expired, all the rights have been redeemed or the rights have separated from the Common Stock. There shall be no adjustment to the Conversion Rate with respect to the adoption of any
such rights plan and the distribution of the rights with respect to shares of Common Stock, unless rights have separated from the Common Stock. If the rights provided for in any future rights plan adopted by the Company have separated from the
shares of Common Stock in accordance with the provisions of the applicable stockholder rights agreement so that the Holders of the Securities would not be entitled to receive any rights in respect of Common Stock issuable upon conversion of the
Securities, the Conversion Rate will be adjusted as provided in Section 10.06(d), and will be further adjusted in the event of any events affecting such rights following any separation from the Common Stock and subject to readjustment in the
event of the expiration, termination or redemption of such rights. 
 Section 10.13. Settlement Upon Conversion; Cash
Percentage Election. 
 (a) Upon any conversion of Securities, the Company will deliver to converting Holders in respect of each $1,000
principal amount of Securities being converted a “Settlement Amount” equal to the sum of the Daily Settlement Amounts for each of the 20 Trading Days during the Conversion Observation Period. Settlement in cash and shares of Common Stock,
if any, will occur no later than the fifth Trading Day following the final Trading Day of the Conversion Observation Period. 
 (b) By the
close of business on the Business Day prior to the first Scheduled Trading Day of the applicable Conversion Observation Period, the Company may specify a 

  
 72 

 
percentage (which shall not be in excess of 80%) of the Daily Share Amount included in the Daily Settlement Amount that will be settled in cash (the “Cash Percentage”) and will
notify the Holder of such Cash Percentage through written notice to the Trustee (the “Cash Percentage Notice”). If the Company elects to specify a Cash Percentage, (x) the amount of cash that the Company will deliver in respect
of the Daily Share Amount for each Trading Day in the applicable Observation Conversion Period will equal the product of: (i) the Cash Percentage, (ii) the Daily Share Amount for such Trading Day (assuming for this purpose the Company has
not specified a Cash Percentage), and (iii) the VWAP Price for such Trading Day and (y) the number of shares of Common Stock deliverable in respect of each Trading Day in the applicable Observation Conversion Period (in lieu of the full
Daily Share Amount for such Trading Day) will be a percentage of the Daily Share Amount (assuming the Company has not specified a Cash Percentage) equal to 100% minus the Cash Percentage. 

If the Company does not specify a Cash Percentage by the close of business on the Business Day prior to the scheduled first
Trading Day of the applicable Observation Conversion Period, the Company must settle 100% of the Daily Share Amount for each Trading Day in the applicable Conversion Observation Period with shares of Common Stock; provided that the Company
shall pay cash in lieu of fractional shares otherwise issuable upon conversion of such Securities. 
 ARTICLE 11 

MISCELLANEOUS 

Section 11.01. Trust Indenture Act Controls. If any provision of this Indenture limits, qualifies or
conflicts with another provision which is required to be included in this Indenture by the TIA, the required provision shall control. 

Section 11.02. Notices. Any notice or communication shall be in writing and delivered in person or mailed by
first-class mail addressed as follows: 
 if to the Company: 

Nuance Communications, Inc. 
 1
Wayside Road 
 Burlington, MA 01803 

Attention: Chief Financial Officer 

if to the Trustee: 
 U.S. Bank
National Association 
 Corporate Trust Services 

225 Asylum Street, 23rd Floor 

Hartford, CT 06103 
 Attention:
Arthur L. Blakeslee (Nuance Communications 
 1.50% Sr. Conv. Debentures Due 2035 

  
 73 

 The Company or the Trustee by notice to the other may designate additional or
different addresses for subsequent notices or communications. 
 Any notice or communication mailed to a Securityholder shall
be mailed to the Securityholder at the Securityholder’s address as it appears on the Register of the Registrar and shall be sufficiently given if so mailed within the time prescribed. 

Failure to mail a notice or communication to a Securityholder or any defect in it shall not affect its sufficiency with respect
to other Securityholders. If a notice or communication is mailed in the manner provided above, it is duly given, whether or not the addressee receives it. 

With respect to any Global Security, references in this Indenture to any required “mailing” of a notice shall be
deemed to refer to any other means of notice consistent with the Depositary’s applicable procedures. 

Section 11.03. Communication by Securityholders with Other Securityholders. Securityholders may communicate
pursuant to TIA § 312(b) with other Securityholders with respect to their rights under this Indenture or the Securities. The Company, the Trustee, the Registrar and anyone else shall have the protection of TIA § 312(c). 

Section 11.04. Certificate and Opinion as to Conditions Precedent. Upon any request or application by the
Company to the Trustee to take or refrain from taking any action under this Indenture, the Company shall furnish to the Trustee: 
 (a) an
Officers’ Certificate in form and substance reasonably satisfactory to the Trustee stating that, in the opinion of the signers, all conditions precedent, if any, provided for in this Indenture relating to the proposed action have been complied
with; and 
 (b) an Opinion of Counsel in form and substance reasonably satisfactory to the Trustee stating that, in the opinion of such
counsel, all such conditions precedent have been complied with. 
 Section 11.05. Statements Required in Certificate
or Opinion. Each certificate or opinion with respect to compliance with a covenant or condition provided for in this Indenture shall include: 

(a) a statement that the individual making such certificate or opinion has read such covenant or condition; 

  
 74 

 (b) a brief statement as to the nature and scope of the examination or investigation upon which
the statements or opinions contained in such certificate or opinion are based; 
 (c) a statement that, in the opinion of such individual,
he has made such examination or investigation as is necessary to enable him to express an informed opinion as to whether or not such covenant or condition has been complied with; and 

(d) a statement as to whether or not, in the opinion of such individual, such covenant or condition has been complied with. 

Section 11.06. When Securities Disregarded. In determining whether the Securityholders of the required principal
amount of Securities have concurred in any direction, waiver or consent, Securities owned by the Company or by any Person directly or indirectly controlling or controlled by or under direct or indirect common control with the Company shall be
disregarded and deemed not to be outstanding, except that, for the purpose of determining whether the Trustee shall be protected in relying on any such direction, waiver or consent, only Securities which the Trustee knows are so owned shall be so
disregarded. Subject to the foregoing, only Securities outstanding at the time shall be considered in any such determination. 

Section 11.07. Rules by Trustee, Paying Agent and Registrar. The Trustee may make reasonable rules for action by or
a meeting of Securityholders. The Registrar and the Paying Agent may make reasonable rules for their functions. 

Section 11.08. Legal Holidays. A “Legal Holiday” is a Saturday, a Sunday or a day on which banking
institutions are not required to be open in the State of New York. If a payment date is a Legal Holiday, payment shall be made on the next succeeding day that is not a Legal Holiday, and no interest shall accrue for the intervening period. If a
regular record date is a Legal Holiday, the record date shall not be affected. 
 Section 11.09. Governing Law.
THIS INDENTURE AND THE SECURITIES, AND ANY CLAIM, CONTROVERSY OR DISPUTE ARISING UNDER OR RELATED TO THIS INDENTURE AND THE SECURITIES 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). 
 Section 11.10. No Recourse Against Others. A director, officer,
employee or stockholder, as such, of the Company shall not have any liability for any obligations of the Company under the Securities or this Indenture or for any claim based on, in respect of or by reason of such obligations or their creation. By
accepting a Security, each Securityholder shall waive and release all such liability. The waiver and release shall be part of the consideration for the issue of the Securities. 

  
 75 

 Section 11.11. Successors. All agreements of the Company in this
Indenture and the Securities shall bind its successors. All agreements of the Trustee in this Indenture shall bind its successors. 

Section 11.12. Multiple Originals. The parties may sign any number of copies of this Indenture. Each signed copy
shall be an original, but all of them together represent the same agreement. One signed copy is enough to prove this Indenture. 

Section 11.13. Table of Contents; Headings. The table of contents, cross-reference sheet and headings of the
Articles and Sections of this Indenture have been inserted for convenience of reference only, are not intended to be considered a part hereof and shall not modify or restrict any of the terms or provisions hereof. 

Section 11.14. Calculations in Respect of the Securities. Except as otherwise provided in Section 10.01(b) of
this Indenture, the Company will be responsible for making all calculations called for under the Indenture or the Securities. These calculations include, but are not limited to, determinations of the Closing Sale Price of the Common Stock, accrued
interest payable on the Securities, the Conversion Rate, Conversion Price and Default Additional Interest, if any. The Company or its agents will make all these calculations in good faith and, absent manifest error, such calculations will be final
and binding on Holders of the Securities. The Company will provide a schedule of these calculations to each of the Trustee and the Paying Agent upon request, and each of the Trustee and Conversion Agent is entitled to rely upon the accuracy of such
calculations without independent verification. The Trustee will forward these calculations to any Holder of the Securities upon the request of that Holder. 

  
 76 

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

					
	NUANCE COMMUNICATIONS, INC., as Issuer
		
	By:		 /s/ Thomas L. Beaudoin

			Name:		Thomas L. Beaudoin
			Title:		Executive Vice President and Chief Financial Officer
	
	U.S. BANK NATIONAL ASSOCIATION, as Trustee
		
	By:		 /s/ Kathy L. Mitchell

			Name:		Kathy L. Mitchell
			Title:		Vice President

  
 77 

 EXHIBIT A 

[FORM OF FACE OF SECURITY] 

[INCLUDE THE FOLLOWING LEGEND IF A GLOBAL SECURITY] 

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION
(“DTC”), NEW YORK, NEW YORK, 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 SUCH OTHER NAME AS IS REQUESTED BY AN
AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT 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. 
 TRANSFERS OF THIS GLOBAL SECURITY
SHALL BE LIMITED TO TRANSFERS IN WHOLE, BUT NOT IN PART, TO NOMINEES OF DTC OR TO A SUCCESSOR THEREOF OR SUCH SUCCESSOR’S NOMINEE AND TRANSFERS OF PORTIONS OF THIS GLOBAL SECURITY SHALL BE LIMITED TO TRANSFERS MADE IN ACCORDANCE WITH THE
INDENTURE REFERRED TO ON THE REVERSE HEREOF.] 
 [INCLUDE THE FOLLOWING LEGEND IN ALL SECURITIES] 

THIS SECURITY WAS ISSUED WITH ORIGINAL ISSUE DISCOUNT FOR UNITED STATES FEDERAL INCOME TAX PURPOSES. PURSUANT TO SECTION 4.08 OF THE
INDENTURE, THE COMPANY AGREES, AND BY ACCEPTANCE OF A BENEFICIAL OWNERSHIP INTEREST IN THE SECURITIES EACH BENEFICIAL HOLDER OF A SECURITY AGREES, FOR UNITED STATES FEDERAL INCOME TAX PURPOSES, (I) TO TREAT THE SECURITIES AS INDEBTEDNESS OF THE
COMPANY SUBJECT TO UNITED STATES TREASURY REGULATIONS SECTION 1.1275-4 (THE “CONTINGENT DEBT REGULATIONS”) AND, FOR PURPOSES OF THE CONTINGENT DEBT REGULATIONS, TO TREAT THE FAIR MARKET VALUE OF ANY COMMON STOCK BENEFICIALLY
RECEIVED UPON CONVERSION AS A CONTINGENT PAYMENT, (II) TO BE BOUND BY THE COMPANY’S DETERMINATION OF THE “COMPARABLE YIELD” AND “PROJECTED PAYMENT SCHEDULE,” WITHIN THE MEANING OF THE CONTINGENT DEBT REGULATIONS, WITH
RESPECT TO SUCH HOLDER’S SECURITIES AND (III) TO USE SUCH “COMPARABLE YIELD” AND “PROJECTED PAYMENT SCHEDULE” IN DETERMINING INTEREST ACCRUALS WITH RESPECT TO SUCH HOLDER’S 

 
SECURITIES AND IN DETERMINING ADJUSTMENTS THERETO. A HOLDER OF SECURITIES MAY OBTAIN THE ISSUE PRICE, ISSUE DATE, YIELD TO MATURITY, COMPARABLE YIELD AND THE PROJECTED PAYMENT SCHEDULE BY
SUBMITTING A WRITTEN REQUEST FOR SUCH INFORMATION TO: NUANCE COMMUNICATIONS, INC., 1 WAYSDIE ROAD, BURLINGTON, MA 01803, ATTENTION: CHIEF FINANCIAL OFFICER. 

 Nuance Communications, Inc. 

1.50% Senior Convertible Debenture Due 2035 
  

			
	No.             		Initially $        
		
			 CUSIP No.:             

ISIN Number:             

 Nuance Communications, Inc., a Delaware corporation, promises to pay to [CEDE & CO., or its
registered assigns]1, the principal sum of              Dollars, [as revised by the Schedule of Increases or Decreases in Global
Security attached hereto,]2 on November 1, 2035. 
 Interest Payment Dates:
May 1 and November 1. 
 Interest Record Dates: April 15 and October 15. 

Reference is made to the further provisions of this Security set forth on the reverse hereof, including, without limitation, provisions giving
the Holder of this Security the right to convert this Security into cash and, if applicable, Common Stock, on the terms and subject to the limitations referred to on the reverse hereof and as more fully specified in the Indenture. Such further
provisions shall for all purposes have the same effect as though fully set forth at this place. 
 This Security shall not be valid or
become obligatory for any purpose until the certificate of authentication hereon shall have been manually signed by the Trustee or a duly authorized authenticating agent under the Indenture. 

IN WITNESS WHEREOF, the parties have caused this instrument to be duly executed. 

 

			
	NUANCE COMMUNICATIONS, INC., as Issuer
		
	By:		  

			Name:
			Title:

 Dated: 

 

	1 	Use bracketed language for a Global Security. 

	2 	Use bracketed language for a Global Security. 

			
	TRUSTEE’S CERTIFICATE OF AUTHENTICATION
	
	U.S. BANK NATIONAL ASSOCIATION, as Trustee, certifies that this is one of the Securities referred to in the Indenture.
		
	By:		  

			Authorized Signatory

 [FORM OF REVERSE SIDE OF SECURITY] 

Nuance Communications, Inc. 

1.50% Senior Convertible Debenture Due 2035 

Capitalized terms used herein but not defined shall have the meanings ascribed to such terms in the Indenture. 

 

	1.	Interest 

 (a) NUANCE COMMUNICATIONS, INC., a Delaware corporation (such
corporation, and its successors and assigns under the Indenture hereinafter referred to, being herein called the “Company”), promises to pay interest on the principal amount of this Security at the rate of 1.50% per annum. The
Company will pay interest semiannually on May 1 and November 1 of each year commencing on November 1, 2015. Interest on the Security will accrue from the most recent date to which interest has been paid or, if no interest has been
paid, from June 16, 2015. Interest will be computed on the basis of a 360-day year of twelve 30-day months. If a payment date is not a Business Day, payment will be made on the next succeeding Business Day, and no additional interest will
accrue in respect of such payment by virtue of the payment being made on such later date. 
 (b) The Company may elect to pay
additional interest on this Security as sole remedy for an Event of Default relating to a failure to file with the Trustee reports required under the Exchange Act. 

(c) Except as otherwise specifically set forth, all references herein to “interest” include additional interest that the Company
elects to pay in connection with a failure to file reports required under the Exchange Act. 
  

	2.	Paying Agent, Registrar and Conversion Agent 

 Initially, U.S. Bank National
Association, a national banking association (the “Trustee”), will act as Paying Agent, Registrar and Conversion Agent. The Company may appoint and change any Paying Agent, Registrar or co-registrar or Conversion Agent without
notice. The Company or any of its domestically incorporated wholly owned Subsidiaries may act as Paying Agent, Registrar or co-registrar, or Conversion Agent. 
  

	3.	Indenture 

 The Company issued the Securities under an Indenture dated as of
June 16, 2015 (the “Indenture”), between the Company and the Trustee. The terms of the Securities include those stated in the Indenture and those made part of the Indenture by reference to the Trust Indenture Act of 1939 (15 U.S.C.
§§ 77aaa-77bbbb) as in effect on the date of the Indenture (the “TIA”). Terms defined in the Indenture and not defined herein have the meanings ascribed thereto in the 

 
Indenture (except as specifically provided in Section 1(b)). The Securities are subject to all such terms, and Securityholders are referred to the Indenture and the TIA for a statement of
those terms. 
 This Security is one of the Securities referred to in the Indenture issued in an initial aggregate principal amount of
$263,895,000. Additional Securities may be issued in accordance with the Indenture. The Indenture also imposes limitations on the ability of the Company to consolidate or merge with or into any other Person or convey, transfer or lease all or
substantially all of the property of the Company. 
  

	5.	Optional Redemption 

 The Securities will not be redeemable at the option of the Company
prior to November 5, 2021. At any time on or after November 5, 2021, the Securities will be redeemable at the option of the Company, in whole or in part, on not less than 25 Scheduled Trading Days nor more than 60 Business Days prior
notice, at a Redemption Price equal to 100% of the principal amount of the Securities being redeemed, plus accrued and unpaid interest to, but excluding, the Redemption Date. 

 

	6.	Repurchase of Securities at the Option of Securityholders 

 If a Fundamental Change
occurs at any time prior to maturity of the Security, this Security will be subject to a repurchase on the terms and conditions of the Indenture, at the option of the Holder, on a Fundamental Change Repurchase Date, specified by the Company. 

Subject to the terms and conditions of the Indenture, each Holder shall have the right, at such Holder’s option, to require the Company
to repurchase all or any portion of the Securities held by such Holder, on November 1, 2021, November 1, 2026 and November 1, 2031. 
  

	7.	Conversion 

 Upon the occurrence of certain events specified in the Indenture and in
compliance with the provisions of the Indenture, on or prior to the close of business on the Business Day immediately preceding the Maturity Date of this Security, the Holder hereof has the right, at its option, to convert each $1,000 principal
amount of this Security into a combination of cash and Common Stock, determined as set forth in the Indenture, based on a Conversion Rate of 42.9978 shares of Common Stock per $1,000 principal amount of Securities, as the same may be adjusted
pursuant to the terms of the Indenture. 

	8.	Denominations, Transfer, Exchange 

 The Securities are in registered form without coupons
in denominations of $1,000 and whole multiples of $1,000. A Securityholder may transfer or exchange Securities in accordance with the Indenture. Upon any transfer or exchange, the Registrar and the Trustee may require a Securityholder, among other
things, to furnish appropriate endorsements or transfer documents and to pay any taxes required by law or permitted by the Indenture. 
  

	9.	Persons Deemed Owners 

 The registered Holder of this Security may be treated as the
owner of it for all purposes. 
  

	10.	Defaults and Remedies 

 If an Event of Default (other than an Event of Default relating
to certain events of bankruptcy, insolvency or reorganization of the Company) occurs and is continuing, the Trustee or the Holders of at least 25% in principal amount of the outstanding Securities may declare the principal of and accrued but unpaid
interest on all the Securities to be due and payable. If an Event of Default relating to certain events of bankruptcy, insolvency or reorganization of the Company occurs, the principal of and interest on all the Securities will become immediately
due and payable without any declaration or other act on the part of the Trustee or any Securityholder. 
  

	11.	No Recourse Against Others 

 A director, officer, employee or stockholder, as such, of
the Company shall not have any liability for any obligations of the Company under the Securities or the Indenture or for any claim based on, in respect of or by reason of such obligations or their creation. By accepting a Security, each
Securityholder waives and releases all such liability. The waiver and release are part of the consideration for the issue of the Securities. 
  

	12.	Authentication 

 This Security shall not be valid until an authorized signatory of the
Trustee (or an authenticating agent) manually signs the certificate of authentication on the other side of this Security. 
  

	13.	Abbreviations 

 Customary abbreviations may be used in the name of a Securityholder or an
assignee, such as TEN COM (=tenants in common), TEN ENT (=tenants by the entireties), JT TEN (=joint tenants with rights of survivorship and not as tenants in common), CUST (=custodian), and U/G/M/A (=Uniform Gift to Minors Act). 

	14.	Governing Law 

 THIS SECURITY SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE
LAWS OF THE STATE OF NEW YORK. 
  

	15.	CUSIP and ISIN Numbers 

 Pursuant to a recommendation promulgated by the Committee on
Uniform Securities Identification Procedures, the Company has caused CUSIP and ISIN numbers to be printed on the Securities and has directed the Trustee to use CUSIP and ISIN numbers in notices of redemption as a convenience to Securityholders. No
representation is made as to the accuracy of such numbers either as printed on the Securities or as contained in any notice of redemption and reliance may be placed only on the other identification numbers placed thereon. 

The Company will furnish to any Holder of Securities upon written request and without charge to the Holder a copy of the Indenture which
has in it the text of this Security. 

 CONVERSION NOTICE 
  

			
	TO:		 NUANCE COMMUNICATIONS, INC.
 U.S. BANK NATIONAL
ASSOCIATION, as Trustee

 The undersigned registered owner of this Security hereby irrevocably exercises the option to convert this
Security, or the portion thereof (which is $1,000 or a multiple thereof) below designated, into, cash and shares of Common Stock, if any, in accordance with the terms of the Indenture referred to in this Security, and directs that the check in
payment for cash and the shares, if any, issuable and deliverable upon such conversion, deliverable upon conversion or for fractional shares and any Securities representing any unconverted principal amount hereof, be issued and delivered to the
registered Holder hereof unless a different name has been indicated below. Capitalized terms used herein but not defined shall have the meanings ascribed to such terms in the Indenture. If shares or any portion of this Security not converted are to
be issued in the name of a person other than the undersigned, the undersigned will provide the appropriate information below and pay all transfer taxes payable with respect thereto. Any amount required to be paid by the undersigned on account of
interest accompanies this Security. 
  

							
	Dated:		  
				  

				
							  

							Signature(s)

  

	
	  

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

	
	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

 [FORM OF REPURCHASE NOTICE/FUNDAMENTAL CHANGE REPURCHASE NOTICE] 

 

			
	TO:		 NUANCE COMMUNICATIONS, INC.
 U.S. BANK NATIONAL
ASSOCIATION, as Trustee

 The undersigned registered owner of this Security hereby irrevocably acknowledges receipt of a notice
from Nuance Communications, Inc. (the “Company”) regarding the right of Holders to elect to require the Company to repurchase the Securities and requests and instructs the Company to repay the entire principal amount of this
Security, or the portion thereof (which is $1,000 or an integral multiple thereof) below designated, in accordance with the terms of the Indenture at the price of 100% of such entire principal amount or portion thereof, together with accrued and
unpaid interest to, but excluding, the Repurchase Date or the Fundamental Change Repurchase Date, as the case may be, to the registered Holder hereof. Capitalized terms used herein but not defined shall have the meanings ascribed to such terms in
the Indenture. The Securities shall be repurchased by the Company as of the Repurchase Date or the Fundamental Change Repurchase Date, as the case may be, pursuant to the terms and conditions specified in the Indenture. 

 

			
	Dated:		  

  

			
	Signature(s):		  

		
			  

 NOTICE: The above signatures of the Holder(s) hereof must correspond with the name as written upon the face of the
Securities in every particular without alteration or enlargement or any change whatever. 
 Securities Certificate Number (if applicable):
                     
 Principal
amount to be repurchased (if less than all, must be $1,000 or whole multiples thereof):                      

Social Security or Other Taxpayer Identification Number:
                     

			
	Dated:		  

  

	
	  

	
	  

	Signature(s)
	
	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.
	
	  

	Signature Guarantee

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

 SCHEDULE OF INCREASES AND DECREASES IN GLOBAL
SECURITY3 
 The following increases or decreases in this Global Security have been
made: 
  

									
	 Date
	  	Amount of decrease in
Principal Amount of this
Global Security	  	Amount of increase in
Principal Amount of this
Global Security	  	Principal Amount of this
Global Security following
such decrease or increase	  	Signature of authorized
signatory of Trustee or
Securities Custodian
		  		  		  		  	
		  		  		  		  	
		  		  		  		  	

  

	3 	For Global Securities only.Exhibit
4.1

 

NUMBER
UNITS

U-[●]

 

SEE REVERSE
FOR CERTAIN

DEFINITIONS

CUSIP
42588J 209

 

HENNESSY
CAPITAL ACQUISITION CORP. II

 

UNITS
CONSISTING OF ONE SHARE OF COMMON STOCK AND ONE WARRANT TO

PURCHASE
ONE-HALF OF ONE SHARE OF COMMON STOCK

 

THIS CERTIFIES
THAT                                         is
the owner of                     Units.

 

Each Unit
(“Unit”) consists of one (1) share of common stock, par value $0.0001 per share (“Common
Stock”), of Hennessy Capital Acquisition Corp. II, a Delaware corporation (the “Company”),
and one warrant (the “Warrant”). Each Warrant entitles the holder to purchase one-half (1/2) of
one share (subject to adjustment) of Common Stock for $5.75 per half share (subject to adjustment). Each Warrant will become
exercisable on the later of (i) thirty (30) days after the Company’s completion of a merger, capital stock exchange,
asset acquisition, stock purchase, reorganization or other similar business combination with one or more businesses (each a “Business
Combination”), or (ii) twelve (12) months from the closing of the Company’s initial public offering,
and will expire unless exercised before 5:00 p.m., New York City Time, on the date that is five (5) years after the date
on which the Company completes its initial Business Combination, or earlier upon redemption or liquidation (the “Expiration
Date”). The Common Stock and Warrants comprising the Units represented by this certificate are not transferable
separately prior to             , 20            ,
unless UBS Securities LLC elects to allow separate trading earlier, subject to the Company’s filing of a Current Report
on Form 8-K with the Securities and Exchange Commission containing an audited balance sheet reflecting the Company’s receipt
of the gross proceeds of the offering and issuing a press release announcing when separate trading will begin. The terms
of the Warrants are governed by a Warrant Agreement, dated as of             ,
2015, between the Company and Continental Stock Transfer & Trust Company, as Warrant Agent, and are subject to the terms
and provisions contained therein, all of which terms and provisions the holder of this certificate consents to by acceptance hereof. Copies
of the Warrant Agreement are on file at the office of the Warrant Agent at 17 Battery Place, New York, New York 10004, and
are available to any Warrant holder on written request and without cost.

 

This
certificate is not valid unless countersigned by the Transfer Agent and Registrar of the Company.

 

Witness
the facsimile signature of its duly authorized officers.

 

	 	 	 
	Secretary	 	President

 

    	 

    	 

    

 

Hennessy
Capital Acquisition Corp. II

 

The
Company will furnish without charge to each unitholder who so requests, a statement of the powers, designations, preferences and
relative, participating, optional or other special rights of each class of stock or series thereof of the Company and the qualifications,
limitations, or restrictions of such preferences and/or rights.

 

The
following abbreviations, when used in the inscription on the face of this certificate, 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	—	                  Custodian
	 	 	 	 	 
	 	 	 	 	 	 
	TEN ENT	—
	as tenants by the entireties	 	 	(Cust)
	 	 	 	 	 	(Minor)
	 	 	 	 	 	Under
Uniform Gifts to Minors
	 	 	 	 	 
	JT TEN	—
	
        as joint tenants with right of survivorship and
not as tenants in common
	 	 	
Act                     

(State)

 

Additional
abbreviations may also be used though not in the above list.

 

For
value received,              hereby sell, assign
and transfer unto                 

 

PLEASE INSERT
SOCIAL SECURITY OR

OTHER

IDENTIFYING
NUMBER OF ASSIGNEE

 

 

 

(PLEASE
PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)

 

 

 

 

 

 

	 	 	 	 	 
	 	 	 	 	 

 

                         
               Units represented by the within
Certificate, and do hereby irrevocably constitute and appoint

 

                        
                                         
    Attorney to transfer the said Units on the books of the within named Corporation with full power
of substitution in the premises.

 

Dated                     

 

    	 

    	 

    

 

	 	 	 
	 	 	Notice:  The
    signature to this assignment must correspond with the name as written upon the face of the certificate in every particular,
    without alteration or enlargement or any change whatever.
	Signature(s)
    Guaranteed:	 	 
	 	 	 
	THE
    SIGNATURE(S) MUST BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND
    CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM, PURSUANT TO S.E.C. RULE 17Ad-15).	 	 

 

In each
case, as more fully described in the Corporation’s final prospectus dated             ,
2015, the holder(s) of this certificate shall be entitled to receive a pro-rata portion of certain funds held in the trust account
established in connection with its initial public offering only in the event that the Corporation redeems the shares of common
stock sold in its initial public offering and liquidates because it does not consummate an initial business combination by __________,
20__ or if the holder(s) seek(s) to redeem for cash his, her or its respective shares of common stock in connection with a tender
offer (or proxy solicitation, solely in the event the Corporation seeks stockholder approval of the proposed initial business
combination) setting forth the details of a proposed initial business combination. In no other circumstances shall the holder(s)
have any right or interest of any kind in or to the trust account.

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