Document:

EX-10.10

 Exhibit 10.10 

NINTH AMENDMENT TO DELAYED 

DRAW TERM LOAN CREDIT AGREEMENT 

NINTH AMENDMENT TO DELAYED DRAW TERM LOAN CREDIT AGREEMENT (this “Amendment”), dated
August 1, 2013, by and among Par Petroleum Corporation, a Delaware corporation (the “Borrower”), the Guarantors party hereto (the “Guarantors” and together with the
Borrower, each a “Credit Party” and collectively, the “Credit Parties”), the undersigned Lenders party hereto, and Jefferies Finance LLC, as administrative agent (the
“Administrative Agent”). 
 WHEREAS, the Credit Parties, Jefferies Finance LLC, as
administrative agent, and the Lenders party thereto from time to time, entered into that certain Delayed Draw Term Loan Credit Agreement dated as of August 31, 2012 (as amended by the First Amendment dated as of September 28, 2012, as
amended by the Second Amendment dated as of November 29, 2012, as amended by the Third Amendment dated as of December 28, 2012, as amended by the Fourth Amendment dated as of April 19, 2013, as amended by the Fifth Amendment dated
June 4, 2013 (the “Fifth Amendment”), as amended by the Sixth Amendment dated June 12, 2013, as amended by the Seventh Amendment dated as of June 17, 2013, as amended by the Eighth Amendment dated as of
June 24, 2013, and as may be further amended, amended and restated, modified, supplemented, extended, renewed, restated or replaced from time to time, the “Credit Agreement”); 

WHEREAS, pursuant to the Fifth Amendment, the Requisite Lenders and the Requisite Tranche B Lenders consented to, among other things, the
Borrower’s formation of a new Subsidiary named Hawaii Pacific Energy, LLC (“HPE”), which, subject to the terms and conditions of the Fifth Amendment, is not required to become a Guarantor or Credit Party under the Credit
Agreement and the other Loan Documents, or a Grantor under the Pledge and Security Agreement; 
 WHEREAS, the Credit Parties have requested
that the Requisite Lenders and the Requisite Tranche B Lenders agree to the formation of a Subsidiary by HPE (such Subsidiary, “NewCo”), the change of HPE’s name to Hawaii Independent Energy, LLC (“Subsidiary
Name Change”) and the Requisite Lenders, the Requisite Tranche B Lenders and, as applicable, the Administrative Agent agree to certain other consents, amendments and waivers to the Credit Agreement and the Pledge and Security Agreement;
and 
 WHEREAS, the Administrative Agent, the Requisite Lenders and the Requisite Tranche B Lenders have agreed to such consents, amendments
and waivers subject to the terms and conditions hereof. 
 NOW, THEREFORE, in consideration of the mutual promises contained herein, and for
other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto hereby agree as follows: 

1. Defined Terms. All capitalized terms used herein (including the recitals hereto) shall have the respective meaning assigned to such
terms in the Credit Agreement as amended by this Amendment, unless otherwise defined herein. 

 2. Amendments. 

(a) Amendments to Loan Documents. Notwithstanding any other provisions set forth in the Credit Agreement, the Pledge and
Security Agreement and the other Loan Documents, (i) NewCo shall not be required to (A) become a Guarantor or Credit Party under the Credit Agreement or the Loan Documents or otherwise guarantee any of the Obligations under the Credit
Agreement and the Loan Documents (or be required to take any action in regards to joining the Loan Documents as a Guarantor, including without limitation, under Section 5.12 of the Credit Agreement), or (B) become a Grantor under the
Pledge and Security Agreement or any other Security Instrument or otherwise grant a lien or security interest in any of its property or assets to secure the Obligations (or be required take any action in regards to granting or perfecting such liens,
including without limitation, under Section 5.12 of the Credit Agreement); and (ii) HPE shall not be required to pledge any of the Equity Interests issued by NewCo to HPE to secure the Obligations (or be required to take any action in
regards to pledging such Equity Interests, including without limitation, under Section 5.12 of the Credit Agreement), provided that, in each case, (A) the New Acquisition (as defined in the Fifth Amendment) is consummated in accordance
with the Target Purchase Agreement (hereinafter defined) on or before September 30, 2013 (“Target Closing”) and immediately prior to the consummation of the Target Closing, the Administrative Agent shall have received a
certificate from a Responsible Officer of Borrower that the Exclusion Conditions (as defined below) all remain satisfied at the time of, and immediately after giving effect to, the Target Closing, (B) HPE and/or NewCo obtain secured financing
on terms and conditions satisfactory to the Requisite Lenders and the Requisite Tranche B Lenders and such financing is evidenced by documentation in form and substance satisfactory to Requisite Lenders and the Requisite Tranche B Lenders in
conjunction with the Target Closing (“NewCo Financing”), (C) after the Target Closing, the NewCo Financing remains in full force and effect or is refinanced with secured financing on terms and conditions and evidenced by
documentation satisfactory to Requisite Lenders and the Requisite Tranche B Lenders, and (D) none of the Credit Parties shall be permitted to make loans, advances, or capital contributions to, guaranty any obligations of, or make any investment
in, or purchase or commit to purchase any stock or other securities or evidences of Debt of or interests in NewCo other than (x) as expressly contemplated to occur in accordance with the Target Purchase Agreement) and (y) in addition to
the items referenced in the immediately preceding clause (x), loans and advances to, and/or capital contributions in NewCo in an amount not to exceed $1,000,000 (the conditions in clauses (A), (B), (C), and (D) above, collectively, the
“Exclusion Conditions”). For the avoidance of doubt, Lenders acknowledge and agree that HPE shall not be prohibited from making loans, advances, or capital contributions to, guaranteeing any obligations of, or making any
investment in, or purchasing or committing to purchase any stock or other securities or evidences of Debt of or interests in NewCo. If any of the Exclusion Conditions (as defined herein and in the Fifth Amendment) are not satisfied on or before the
date required or are no longer satisfied at any time thereafter, this Section 2 shall immediately become null and void ab initio and the Credit Parties and NewCo shall be required to comply with all applicable provisions in the Loan Documents,
including without limitation Section 5.12 of the Credit Agreement, in regards to HPE’s obligation to pledge NewCo’s Equity 

  
 2 

 
Interests to secure the Obligations and NewCo’s obligation to become a Guarantor and Credit Party under the Credit Agreement and the other Loan Documents and a Grantor under the Pledge and
Security Agreement and to grant a security interest under each applicable Security Instrument. For purposes hereof, the “Target Purchase Agreement” shall have the meaning attributed to such term in the Fifth Amendment. 

(b) Amendments to Pledge and Security Agreement. The definition of “Excluded Property” in Section 2 to
the Pledge and Security Agreement is hereby amended to include the Equity Interests issued by NewCo, subject to the Exclusion Conditions. 

(c) Amendment to Fifth Amendment. Section 2(a) of the Fifth Amendment is hereby deleted in its entirety and the
following is substituted in lieu thereof: 
 “(a) Amendments to Loan Documents. Notwithstanding any other
provisions set forth in the Credit Agreement, the Pledge and Security Agreement and the other Loan Documents, (i) NewCo shall not be required to (A) become a Guarantor or Credit Party under the Credit Agreement or the Loan Documents or
otherwise guarantee any of the Obligations under the Credit Agreement and the Loan Documents (or be required to take any action in regards to joining the Loan Documents as a Guarantor, including without limitation, under Section 5.12 of the
Credit Agreement), or (B) become a Grantor under the Pledge and Security Agreement or any other Security Instrument or otherwise grant a lien or security interest in any of its property or assets to secure the Obligations (or be required take
any action in regards to granting or perfecting such liens, including without limitation, under Section 5.12 of the Credit Agreement); and (ii) Borrower shall not be required to pledge any of the Equity Interests issued by NewCo to
Borrower to secure the Obligations (or be required to take any action in regards to pledging such Equity Interests, including without limitation, under Section 5.12 of the Credit Agreement), provided that, in each case, (A) the New
Acquisition is consummated in accordance with the Target Purchase Agreement (hereinafter defined) on or before September 30, 2013 (“Target Closing”) and immediately prior to the consummation of the Target Closing, the
Administrative Agent shall have received a certificate from a Responsible Officer of Borrower that the Exclusion Conditions (as defined below) all remain satisfied at the time of, and immediately after giving effect to, the Target Closing,
(B) NewCo obtains secured financing on terms and conditions satisfactory to the Requisite Lenders and the Requisite Tranche B Lenders and such financing is evidenced by documentation in form and substance satisfactory to Requisite Lenders and
the Requisite Tranche B Lenders in conjunction with the Target Closing (“NewCo Financing”), (C) after the Target Closing, the NewCo Financing remains in full force and effect or is refinanced with secured financing on
terms and conditions and evidenced by documentation satisfactory to Requisite Lenders and the Requisite Tranche B Lenders, (D) Intentionally Omitted, (E) none of the Credit Parties shall be permitted to make loans, advances, or capital
contributions to, guaranty any obligations of, or make any investment in, or purchase or commit to purchase any stock or other securities or evidences of Debt of or interests in NewCo other than 

  
 3 

 
as (x) expressly contemplated to occur in accordance with the Target Purchase Agreement and/or the Seller Guaranty (as defined in the Seventh Amendment) and (y) otherwise permitted
under Section 2(b) of the Seventh Amendment, and (F) Intentionally Omitted, (the conditions in clauses (A), (B), (C), (D), (E) and (F) above, collectively, the “Exclusion Conditions”). If any of the
Exclusion Conditions (as defined herein and in the Ninth Amendment dated as of July __, 2013 by and between Administrative Agent, Lenders and Credit Parties) are not satisfied on or before the date required or are no longer satisfied at any time
thereafter, this Section 2 shall immediately become null and void ab initio and the Credit Parties and NewCo shall be required to comply with all applicable provisions in the Loan Documents, including without limitation Section 5.12 of the
Credit Agreement, in regards to Borrower’s obligation to pledge NewCo’s Equity Interests to secure the Obligations and NewCo’s obligation to become a Guarantor and Credit Party under the Credit Agreement and the other Loan Documents
and a Grantor under the Pledge and Security Agreement and to grant a security interest under each applicable Security Instrument. For purposes hereof, the “Target Purchase Agreement” shall mean that certain Membership
Interest Purchase Agreement, in the form approved by the Borrower’s board of directors (or a special committee thereof) and consented to by the Requisite Lenders and Requisite Tranche B Lenders, in each case, after the date hereof but prior to
the execution of the Membership Interest Purchase Agreement, which Membership Interest Purchase Agreement shall not be amended, restated, modified or supplemented without the consent of the Requisite Lenders and the Requisite Tranche B Lenders. 

(d) The Lenders’ entry into this Amendment shall not obligate or commit any Lender(s) to provide any other consents or
waivers under the Credit Agreement or the other Loan Documents in the future, whether for purposes similar to those described herein or otherwise. 

3. Consent. 

(a) The Requisite Lenders and the Requisite Tranche B Lenders hereby consent to HPE’s formation of NewCo, as a new
Subsidiary, for the sole purpose of facilitating the closing of the transactions under and related to the Target Purchase Agreement. 

(b) Administrative Agent, the Requisite Lenders and the Requisite Tranche B Lenders waive any notice requirements under
Sections 5.17(a)(iii) and 6.16 of the Credit Agreement related to the formation of NewCo. 
 (c) The Requisite Lenders and
the Requisite Tranche B Lenders hereby consent to the Subsidiary Name Change. 
 (d) Administrative Agent, the Requisite
Lenders, and the Requisite Tranche B Lenders waive any notice requirements (if any) related to the Subsidiary Name Change. 

  
 4 

 (e) The Requisite Lenders and the Requisite Tranche B Lenders hereby consent to
the amendments to the Certificate of Incorporation of Borrower which are approved by Borrower’s board of directors and which amendments have the effect of (a) increasing the number of authorized shares of Borrower’s common stock
and/or (b) removing, limiting or modifying the ability of certain holders of five percent (5%) or more of the issued and outstanding common stock of Borrower to transfer the securities of Borrower. 

(f) Administrative Agent and each Lender hereby consent to any acts or omissions by any Credit Party which would otherwise be
in violation of the Credit Agreement and Loan Documents solely to the extent (i) necessary or, in the good faith judgment of the Borrower, desirable, to consummate or facilitate the consummation of the New Acquisition (as defined in the Fifth
Amendment) in accordance with the Target Purchase Agreement, (ii) the Borrower has delivered to the Administrative Agent and Lenders (and Andreas P. Andromalos at Brown Rudnick LLP and Lewis Grimm at Jones Day) at least seven (7) Business
Days prior written notice of such act or omission (such seven (7) Business Day period immediately following delivery of the notice but before the occurrence of the act or the date upon which such act was required to have occurred under the Loan
Documents, the “Notice Period”), describing such act and/or omission and the provisions of the Loan Documents that prohibit such acts and/or omissions and (iii) neither the Administrative nor any Lender whose consent, in
the absence of this Section 3(f), would have been required for such Credit Party or Credit Parties to take such act or omit to take such act, has notified the Borrower in writing within the Notice Period that it will not consent to such act or
omission. If Administrative Agent and/or any Lender notifies the Borrower during the Notice Period that such Lender will not consent to such act or omission and the consent of the Administrative Agent and/or such Lender(s) would have been required
under the Loan Documents to allow such act or omission, (x) no consent to any such act or omission will be deemed to have occurred under this clause (f) and (y) the occurrence of any such act or omission by any such Credit Party shall
constitute a violation of the Credit Agreement and Loan Documents. Any consent available under this Section 3(f) shall not become effective until the expiry of the Notice Period and any consents given in accordance with this Section 3(f)
shall be limited to the acts or omissions specifically described in any notices timely delivered in accordance with this Section. Notwithstanding Section 7(b) hereof, all notices under this Section shall only be deemed to be delivered upon
being received by the intended recipient thereof. Section 3(f) shall become null and void ab initio upon the earliest to occur of (i) September 30, 2013, (ii) the termination of the Target Purchase Agreement and (iii) the
consummation of the New Acquisition (as defined in the Fifth Amendment). 
 4. Representations and Warranties. Each of the Borrower
and each of the Guarantors hereby confirms, reaffirms and restates the representations and warranties made by it in the Credit Agreement, as amended hereby, and confirms that all such representations and warranties are true and correct in all
material respects as of the date hereof. The Borrower and each Guarantor further represent and warrant (which representations and warranties shall survive the execution and delivery of this Amendment) to the Lenders that: 

  
 5 

 (a) The execution, delivery, and performance by each Credit Party of this
Amendment and the consummation of the transactions contemplated hereby, (i) are within such Credit Party’s governing powers, (ii) have been duly authorized by all necessary governing action, (iii) do not contravene (x) such
Credit Party’s Organizational Documents or (y) any law or any contractual restriction binding on or affecting such Credit Party, and (iv) will not result in or require the creation or imposition of any Lien prohibited by the Loan
Documents; 
 (b) No consent, order, authorization, or approval or other action by, and no notice to or filing with, any
Governmental Authority or any other Person is required for the due execution, delivery, and performance by any Credit Party of this Amendment, or the consummation of the transactions contemplated hereby, except for those consents and approvals that
have been obtained, made or waived on or prior to the date hereof and that are in full force and effect; 
 (c) This
Amendment has been duly executed and delivered by such Credit Party and is the legal, valid, and binding obligation of each Credit Party enforceable against such Credit Party in accordance with its terms, except as such enforceability may be limited
by any applicable bankruptcy, insolvency, reorganization, moratorium, fraudulent conveyance or transfer, or similar law affecting creditors’ rights generally and by general principles of equity; and 

(d) No Default or Event of Default has occurred and is continuing. 

5. Effect of this Amendment. Except as expressly amended, consented to or waived hereby, the Credit Agreement and the other Loan
Documents are ratified and confirmed in all respects and shall remain in full force and effect in accordance with their respective terms. Except as expressly set forth herein, the terms of this Amendment shall not be deemed (i) a waiver of any
Default or Event of Default, (ii) a consent, waiver or modification with respect to any term, condition, or obligation of the Borrower or any other Credit Party in the Credit Agreement or any other Loan Document, (iii) a consent, waiver or
modification with respect to any other event, condition (whether now existing or hereafter occurring) or provision of the Loan Documents or (iv) to prejudice any right or remedy which the Administrative Agent or any Lender may now or in the
future have under or in connection with the Credit Agreement or any other Loan Document. 
 6. Conditions Precedent. 

(a) To Effectiveness of this Amendment. This Amendment shall become effective when, and only when the Credit Parties,
the Administrative Agent and all Lenders shall have executed this Amendment and the Administrative Agent has received counterparts of this Amendment, duly executed by each Credit Party, the Administrative Agent and each Lender (“Amendment
Effective Date”). 
 7. Miscellaneous. 

(a) Survival of Representations and Warranties. All representations and warranties made in this Amendment or any other
document furnished in connection with this Amendment shall survive the execution and delivery of this Amendment and such other documents, and no investigation by the Administrative Agent or the Lenders or any closing of any transaction shall affect
the representations and warranties or the right of the Administrative Agent or the Lenders to rely upon them. 

  
 6 

 (b) Notices. All notices required to be made under this Amendment shall be
made in the manner and at the address set forth in Section 10.2 of the Credit Agreement. 
 (c) Expenses. The
Borrower agrees to pay or reimburse the Administrative Agent and the Lenders for all reasonable fees and out-of-pocket disbursements incurred by the Administrative Agent or the Lenders in connection with the preparation, execution, delivery,
administration and enforcement of this Amendment, including without limitation the reasonable fees and disbursements of counsel for the Administrative Agent and the Lenders, to the same extent that the Borrower would be required to do so pursuant to
Section 10.4 of the Credit Agreement. 
 (d) Reference to Credit Agreement. From and after the effectiveness of
this Amendment, all references herein to the Credit Agreement shall mean the Credit Agreement as amended hereby and as hereafter modified, amended, restated or supplemented from time to time, and each reference in any other Loan Document to the
Credit Agreement shall mean the Credit Agreement as amended hereby and as hereafter modified, amended, restated or supplemented from time to time. The Amendment shall constitute a Loan Document under the Credit Agreement for all purposes. 

(e) Reference to Pledge and Security Agreement. From and after the effectiveness of this Amendment, all references
herein to the Pledge and Security Agreement shall mean the Pledge and Security Agreement as amended hereby and as hereafter modified, amended, restated or supplemented from time to time, and each reference in any other Loan Document to the Pledge
and Security Agreement shall mean the Pledge and Security Agreement as amended hereby and as hereafter modified, amended, restated or supplemented from time to time. 

(f) Reference to Fifth Amendment. From and after the effectiveness of this Amendment, all references herein to the
Fifth Amendment shall mean the Fifth Amendment as amended hereby and as hereafter modified, amended, restated or supplemented from time to time, and each reference in any other Loan Document to the Fifth Amendment shall mean the
Fifth Amendment as amended hereby and as hereafter modified, amended, restated or supplemented from time to time. 

(g) Severability. If any provision of this Amendment is held by a court of competent jurisdiction to be invalid or
unenforceable, such provision shall be inapplicable to the extent of such invalidity without affecting the validity or enforceability of the remainder of this Amendment and the effect thereof shall be confined to the provision so held to be invalid
or unenforceable. 
 (h) Section Headings. Section headings herein are included for convenience of reference only and
shall not affect the meaning or interpretation of this Amendment. 

  
 7 

 (i) Entire Agreement. This Amendment shall be deemed to be a Loan Document
and, together with the other Loan Documents and the agreements, documents and instruments contemplated hereby, constitutes the entire understanding of the parties with respect to the subject matter hereof and thereof, and any other prior or
contemporaneous agreements, whether written or oral, with respect hereto or thereto are expressly superseded hereby and thereby. 

(j) Counterparts. This Amendment may be executed in any number of counterparts and by different parties on separate
counterparts, each of which, when executed and delivered, shall be deemed to be an original, and all of which, when taken together, shall constitute but one and the same Amendment. Delivery of an executed counterpart of this Amendment by facsimile
or .pdf shall be equally as effective as delivery of an original executed counterpart of this Amendment. Any party delivering an executed counterpart of this Amendment by facsimile or .pdf also shall deliver an original executed counterpart of this
Amendment but the failure to deliver an original executed counterpart shall not affect the validity, enforceability, and binding effect of this Amendment. 

(k) Successors and Assigns. This Amendment shall be binding on and inure to the benefit of the parties hereto and their
heirs, beneficiaries, successors and assigns. The Credit Parties may not assign this Amendment or any of their respective rights or obligations hereunder to any Person without the prior written consent of the Requisite Lenders and the Requisite
Tranche B Lenders, which consent may be withheld or given in each such Lender’s sole discretion. 
 (l) Governing
Law; Venue; Jury Trial. THIS AMENDMENT AND THE RIGHTS AND OBLIGATIONS OF THE PARTIES HEREUNDER SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE CHOICE OF LAW AND VENUE PROVISIONS SET FORTH IN SECTION 10.12 OF THE CREDIT AGREEMENT, AND
SHALL BE SUBJECT TO THE JURY TRIAL WAIVER SET FORTH IN SECTION 10.14 OF THE CREDIT AGREEMENT. 
 (m) Guarantors. Each
Guarantor, for value received, hereby expressly consents and agrees to the Borrower’s execution and delivery of this Amendment, to the performance by the Borrower of its agreements and obligations hereunder and to the consents, amendments and
waivers set forth herein (and all other consents given in accordance with the provisions hereof). This Amendment, the performance or consummation of any transaction or matter contemplated under this Amendment and all consents, amendments and waivers
set forth herein (and all consents given in accordance with the provisions hereof), shall not limit, restrict, extinguish or otherwise impair any Guarantor’s liability to the Administrative Agent and Lenders with respect to the payment and
other performance obligations of such Guarantor pursuant to the Guarantees. Each Guarantor hereby ratifies, confirms and approves its Guarantee and acknowledges that it is unconditionally liable to the Administrative Agent and Lenders for the full
and timely payment of the Guaranteed Obligations (on a joint and several basis with the other Guarantors). Each Guarantor hereby acknowledges that it has no defenses, counterclaims or set-offs with respect to the full and timely payment of any or
all Guaranteed Obligations. 
 [Remainder of Page Intentionally Left Blank; Signature Pages to Follow] 

  
 8 

 IN WITNESS WHEREOF, each of the parties hereto has duly executed this Ninth Amendment to Delayed
Draw Term Loan Credit Agreement as of the date first written above. 
  

			
	 BORROWER:
  

PAR PETROLEUM CORPORATION,
 a Delaware corporation

		
	By:	 	/s/ R. Seth Bullock
		 	 R. Seth Bullock
 Chief Financial
Officer

	
	 GUARANTORS:
  

PAR PICEANCE ENERGY EQUITY LLC,
 a Delaware limited liability
company
  
 PAR UTAH LLC,

a Delaware limited liability company
  

EWI LLC, a Delaware limited liability company
  

PAR WASHINGTON LLC,
 a Delaware limited liability company

 
 PAR NEW MEXICO LLC,

a Delaware limited liability company
  

HEWW EQUIPMENT LLC,
 a Delaware limited liability company

 
 PAR POINT ARGUELLO LLC,

a Delaware limited liability company

 

			
	 By: PAR PETROLEUM CORPORATION,
 a
Delaware corporation, as Sole Member of each of the foregoing companies

		
	By:	 	/s/ R. Seth Bullock
		 	 R. Seth Bullock
 Chief Financial
Officer

  
 Signature Page to Ninth
Amendment to Delayed Draw Term Loan Credit Agreement 

			
	 ADMINISTRATIVE AGENT:
  

JEFFERIES FINANCE LLC

		
	By:	 	/s/ J. Paul McDonnell
		 	 Name: J. Paul McDonnell
 Title: Managing
Director

  
 Signature Page to Ninth
Amendment to Delayed Draw Term Loan Credit Agreement 

			
	 LENDERS (EACH EXECUTING WITH

RESPECT TO ITS LOANS AND
 TRANCHE B LOANS):

 
 WB DELTA, LTD., as a Lender

		
	By:	 	/s/ Mark Strefling
		 	 Name: Mark Strefling
 Title:
Director

  
 Signature Page to Ninth
Amendment to Delayed Draw Term Loan Credit Agreement 

			
	 ZCOF PAR PETROLEUM HOLDINGS, L.L.C.,

as a Lender

		
	By:	 	/s/ Jon Wasserman
		 	 Name: Jon Wasserman
 Title: Vice
President

  
 Signature Page to Ninth
Amendment to Delayed Draw Term Loan Credit Agreement 

					
	 WATERSTONE OFFSHORE ER FUND, LTD.,

as a Lender

		
	By:	 	Waterstone Capital Management, L.P.
			
		 	By:	 	/s/ Jeffrey C. Erb
		 	 Name: Jeffrey C. Erb
 Title: General
Counsel

  

					
	PRIME CAPITAL MASTER SPC, GOT WAT MAC SEGREGATED PORTFOLIO, as a Lender
		
	By:	 	Waterstone Capital Management, L.P.
			
		 	By:	 	/s/ Jeffrey C. Erb
		 	 Name: Jeffrey C. Erb
 Title: General
Counsel

  

					
	 WATERSTONE MARKET NEUTRAL MAC51, LTD.,

as a Lender

		
	By:	 	Waterstone Capital Management, L.P.
			
		 	By:	 	/s/ Jeffrey C. Erb
		 	 Name: Jeffrey C. Erb
 Title: General
Counsel

  

					
	WATERSTONE MARKET NEUTRAL MASTER FUND, LTD., as a Lender
		
	By:	 	Waterstone Capital Management, L.P.
			
		 	By:	 	/s/ Jeffrey C. Erb
		 	 Name: Jeffrey C. Erb
 Title: General
Counsel

  

					
	WATERSTONE MF FUND, LTD., as a Lender
		
	By:	 	Waterstone Capital Management, L.P.
			
		 	By:	 	/s/ Jeffrey C. Erb
		 	 Name: Jeffrey C. Erb
 Title: General
Counsel

  
 Signature Page to Ninth
Amendment to Delayed Draw Term Loan Credit Agreement 

					
	NOMURA WATERSTONE MARKET NEUTRAL FUND LTD., as a Lender
		
	By:	 	Waterstone Capital Management, L.P.
			
		 	By:	 	/s/ Jeffrey C. Erb
		 	 Name: Jeffrey C. Erb
 Title: General
Counsel

  

					
	WATERSTONE OFFSHORE BLR FUND, LTD., as a Lender
		
	By:	 	Waterstone Capital Management, L.P.
			
		 	By:	 	/s/ Jeffrey C. Erb
		 	 Name: Jeffrey C. Erb
 Title: General
Counsel

  

					
	 WATERSTONE QUARRY BLR FUND, LTD.,

as a Lender

		
	By:	 	Waterstone Capital Management, L.P.
			
		 	By:	 	/s/ Jeffrey C. Erb
		 	 Name: Jeffrey C. Erb
 Title: General
Counsel

  

					
	 WATERSTONE OFFSHORE AD BLR FUND LTD.,

as a Lender

		
	By:	 	Waterstone Capital Management, L.P.
			
		 	By:	 	/s/ Jeffrey C. Erb
		 	 Name: Jeffrey C. Erb
 Title: General
Counsel

  
 Signature Page to Ninth
Amendment to Delayed Draw Term Loan Credit Agreement 

			
	 HIGHBRIDGE INTERNATIONAL, LLC,
 as a
Lender
 By: Highbridge Capital Management, LLC,
 as Trading
Manager

		
	By:	 	/s/ Jonathan Segal
	 Name: Jonathan Segal
 Title:
Managing Director

  
 Signature Page to Ninth
Amendment to Delayed Draw Term Loan Credit AgreementEX-4.1

 Exhibit 4.1 
  

 
  

HORIZON PHARMA, INC. 
 AND 

U.S. BANK NATIONAL ASSOCIATION, 

as Trustee 
 INDENTURE 

Dated as of November 22, 2013 

5.00% Convertible Senior Notes due 2018 
  

 
  

 TABLE OF CONTENTS 

 

							
	 	 	 	  	PAGE	 
	ARTICLE 1	  			
	DEFINITIONS	  			
			
	 Section 1.01.
	 	Definitions	  	 	1	  
	 Section 1.02.
	 	References to Interest	  	 	12	  
		
	ARTICLE 2	  			
	ISSUE, DESCRIPTION, EXECUTION, REGISTRATION AND EXCHANGE OF NOTES	  			
			
	 Section 2.01.
	 	Designation and Amount	  	 	12	  
	 Section 2.02.
	 	Form of Notes	  	 	12	  
	 Section 2.03.
	 	Date and Denomination of Notes; Payments of Interest and Defaulted Amounts	  	 	13	  
	 Section 2.04.
	 	Execution, Authentication and Delivery of Notes	  	 	14	  
	 Section 2.05.
	 	Exchange and Registration of Transfer of Notes; Restrictions on Transfer; Depositary	  	 	15	  
	 Section 2.06.
	 	Mutilated, Destroyed, Lost or Stolen Notes	  	 	22	  
	 Section 2.07.
	 	Temporary Notes	  	 	23	  
	 Section 2.08.
	 	Cancellation of Notes Paid, Converted, Etc	  	 	24	  
	 Section 2.09.
	 	CUSIP Numbers	  	 	24	  
	 Section 2.10.
	 	Additional Notes; Repurchases	  	 	24	  
		
	ARTICLE 3	  			
	SATISFACTION AND DISCHARGE	  			
			
	 Section 3.01.
	 	Satisfaction and Discharge	  	 	25	  
		
	ARTICLE 4	  			
	PARTICULAR COVENANTS OF THE COMPANY	  			
			
	 Section 4.01.
	 	Payment of Principal and Interest	  	 	25	  
	 Section 4.02.
	 	Maintenance of Office or Agency	  	 	25	  
	 Section 4.03.
	 	Appointments to Fill Vacancies in Trustee’s Office	  	 	26	  
	 Section 4.04.
	 	Provisions as to Paying Agent	  	 	26	  
	 Section 4.05.
	 	Existence	  	 	27	  
	 Section 4.06.
	 	Rule 144A Information Requirement and Annual Reports	  	 	27	  
	 Section 4.07.
	 	Stay, Extension and Usury Laws	  	 	29	  
	 Section 4.08.
	 	Compliance Certificate; Statements as to Defaults	  	 	29	  
	 Section 4.09.
	 	Further Instruments and Acts	  	 	29	  

  
 i 

							
	ARTICLE 5	  			
	LISTS OF HOLDERS AND REPORTS BY THE COMPANY AND THE
TRUSTEE	  			
			
	 Section 5.01.
	 	Lists of Holders	  	 	30	  
	 Section 5.02.
	 	Preservation and Disclosure of Lists	  	 	30	  
		
	ARTICLE 6	  			
	DEFAULTS AND REMEDIES	  			
			
	 Section 6.01.
	 	Events of Default	  	 	30	  
	 Section 6.02.
	 	Acceleration; Rescission and Annulment	  	 	31	  
	 Section 6.03.
	 	Additional Interest	  	 	32	  
	 Section 6.04.
	 	Payments of Notes on Default; Suit Therefor	  	 	33	  
	 Section 6.05.
	 	Application of Monies Collected by Trustee	  	 	35	  
	 Section 6.06.
	 	Proceedings by Holders	  	 	35	  
	 Section 6.07.
	 	Proceedings by Trustee	  	 	36	  
	 Section 6.08.
	 	Remedies Cumulative and Continuing	  	 	36	  
	 Section 6.09.
	 	Direction of Proceedings and Waiver of Defaults by Majority of Holders	  	 	37	  
	 Section 6.10.
	 	Notice of Defaults	  	 	37	  
	 Section 6.11.
	 	Undertaking to Pay Costs	  	 	37	  
		
	ARTICLE 7	  			
	CONCERNING THE TRUSTEE	  			
			
	 Section 7.01.
	 	Duties and Responsibilities of Trustee	  	 	38	  
	 Section 7.02.
	 	Reliance on Documents, Opinions, Etc	  	 	40	  
	 Section 7.03.
	 	No Responsibility for Recitals, Etc	  	 	41	  
	 Section 7.04.
	 	Trustee, Paying Agents, Conversion Agents, Bid Solicitation Agent or Note Registrar May Own Notes	  	 	41	  
	 Section 7.05.
	 	Monies and Shares of Common Stock to Be Held in Trust	  	 	41	  
	 Section 7.06.
	 	Compensation and Expenses of Trustee	  	 	41	  
	 Section 7.07.
	 	Officer’s Certificate as Evidence	  	 	42	  
	 Section 7.08.
	 	Eligibility of Trustee	  	 	42	  
	 Section 7.09.
	 	Resignation or Removal of Trustee	  	 	42	  
	 Section 7.10.
	 	Acceptance by Successor Trustee	  	 	43	  
	 Section 7.11.
	 	Succession by Merger, Etc	  	 	44	  
	 Section 7.12.
	 	Trustee’s Application for Instructions from the Company	  	 	44	  
		
	ARTICLE 8	  			
	CONCERNING THE HOLDERS	  			
			
	 Section 8.01.
	 	Action by Holders	  	 	45	  
	 Section 8.02.
	 	Proof of Execution by Holders	  	 	45	  
	 Section 8.03.
	 	Who Are Deemed Absolute Owners	  	 	45	  
	 Section 8.04.
	 	Company-Owned Notes Disregarded	  	 	46	  
	 Section 8.05.
	 	Revocation of Consents; Future Holders Bound	  	 	46	  

  
 ii 

							
	ARTICLE 9	  			
	HOLDERS’ MEETINGS	  			
			
	 Section 9.01.
	 	Purpose of Meetings	  	 	46	  
	 Section 9.02.
	 	Call of Meetings by Trustee	  	 	47	  
	 Section 9.03.
	 	Call of Meetings by Company or Holders	  	 	47	  
	 Section 9.04.
	 	Qualifications for Voting	  	 	47	  
	 Section 9.05.
	 	Regulations	  	 	48	  
	 Section 9.06.
	 	Voting	  	 	48	  
	 Section 9.07.
	 	No Delay of Rights by Meeting	  	 	48	  
		
	ARTICLE 10	  			
	SUPPLEMENTAL INDENTURES	  			
			
	 Section 10.01.
	 	Supplemental Indentures Without Consent of Holders	  	 	49	  
	 Section 10.02.
	 	Supplemental Indentures with Consent of Holders	  	 	49	  
	 Section 10.03.
	 	Effect of Supplemental Indentures	  	 	51	  
	 Section 10.04.
	 	Notation on Notes	  	 	51	  
	 Section 10.05.
	 	Evidence of Compliance of Supplemental Indenture to Be Furnished Trustee	  	 	51	  
		
	ARTICLE 11	  			
	CONSOLIDATION, MERGER, SALE, CONVEYANCE AND LEASE	  			
			
	 Section 11.01.
	 	Company May Consolidate, Etc. on Certain Terms	  	 	51	  
	 Section 11.02.
	 	Successor Corporation to Be Substituted	  	 	51	  
		
	ARTICLE 12	  			
	IMMUNITY OF INCORPORATORS, STOCKHOLDERS, OFFICERS AND DIRECTORS	  			
			
	 Section 12.01.
	 	Indenture and Notes Solely Corporate Obligations	  	 	52	  
		
	ARTICLE 13	  			
	INTENTIONALLY OMITTED	  			
		
	ARTICLE 14	  			
	CONVERSION OF NOTES	  			
			
	 Section 14.01.
	 	Conversion Privilege	  	 	53	  
	 Section 14.02.
	 	Conversion Procedure; Settlement Upon Conversion.	  	 	55	  
	 Section 14.03.
	 	 Increased Conversion Rate Applicable to Certain Notes Surrendered in Connection with Make-Whole Fundamental Changes
	  	 	60	  
	 Section 14.04.
	 	Adjustment of Conversion Rate	  	 	62	  
	 Section 14.05.
	 	Adjustments of Prices	  	 	71	  
	 Section 14.06.
	 	Shares to Be Fully Paid	  	 	71	  
	 Section 14.07.
	 	Effect of Recapitalizations, Reclassifications and Changes of the Common Stock.	  	 	71	  
	 Section 14.08.
	 	Certain Covenants	  	 	74	  

  
 iii 

							
	 Section 14.09.
	 	Responsibility of Trustee	  	 	74	  
	 Section 14.10.
	 	Notice to Holders Prior to Certain Actions	  	 	75	  
	 Section 14.11.
	 	Stockholder Rights Plans	  	 	75	  
		
	ARTICLE 15	  			
	REPURCHASE OF NOTES AT OPTION OF HOLDERS	  			
			
	 Section 15.01.
	 	Intentionally Omitted	  	 	75	  
	 Section 15.02.
	 	Repurchase at Option of Holders Upon a Fundamental Change	  	 	76	  
	 Section 15.03.
	 	Withdrawal of Fundamental Change Repurchase Notice	  	 	78	  
	 Section 15.04.
	 	Deposit of Fundamental Change Repurchase Price	  	 	78	  
	 Section 15.05.
	 	Covenant to Comply with Applicable Laws Upon Repurchase of Notes	  	 	79	  
		
	ARTICLE 16	  			
	NO REDEMPTION	  			
			
	 Section 16.01.
	 	No Redemption	  	 	80	  
		
	ARTICLE 17	  			
	MISCELLANEOUS PROVISIONS	  			
			
	 Section 17.01.
	 	Provisions Binding on Company’s Successors	  	 	80	  
	 Section 17.02.
	 	Official Acts by Successor Corporation	  	 	80	  
	 Section 17.03.
	 	Addresses for Notices, Etc	  	 	80	  
	 Section 17.04.
	 	Governing Law; Jurisdiction	  	 	81	  
	 Section 17.05.
	 	Evidence of Compliance with Conditions Precedent; Certificates and Opinions of Counsel to Trustee	  	 	81	  
	 Section 17.06.
	 	Legal Holidays	  	 	82	  
	 Section 17.07.
	 	No Security Interest Created	  	 	82	  
	 Section 17.08.
	 	Benefits of Indenture	  	 	82	  
	 Section 17.09.
	 	Table of Contents, Headings, Etc	  	 	82	  
	 Section 17.10.
	 	Authenticating Agent	  	 	82	  
	 Section 17.11.
	 	Execution in Counterparts	  	 	83	  
	 Section 17.12.
	 	Severability	  	 	83	  
	 Section 17.13.
	 	Waiver of Jury Trial	  	 	83	  
	 Section 17.14.
	 	Force Majeure	  	 	84	  
	 Section 17.15.
	 	Calculations	  	 	84	  
	 Section 17.16.
	 	USA PATRIOT Act	  	 	84	  
		
	EXHIBIT	  			
	 Exhibit A
	 	Form of Note	  	 	A-1	  

  
 iv 

 INDENTURE dated as of November 22, 2013 between HORIZON PHARMA, INC., a Delaware
corporation, as issuer (the “Company,” as more fully set forth in Section 1.01) and U.S. BANK NATIONAL ASSOCIATION, a national banking association, as trustee (the “Trustee,” as more fully set forth in Section
1.01). 
 W I T N E S S E T H: 

WHEREAS, for its lawful corporate purposes, the Company has duly authorized the issuance of its 5.00% Convertible Senior Notes due 2018 (the
“Notes”), initially in an aggregate principal amount not to exceed $150,000,000, and in order to provide the terms and conditions upon which the Notes are to be authenticated, issued and delivered, the Company has duly authorized
the execution and delivery of this Indenture; and 
 WHEREAS, the Form of Note, the certificate of authentication to be borne by each Note,
the Form of Notice of Conversion, the Form of Fundamental Change Repurchase Notice and the Form of Assignment and Transfer to be borne by the Notes are to be substantially in the forms hereinafter provided; and 

WHEREAS, all acts and things necessary to make the Notes, when executed by the Company and authenticated and delivered by the Trustee or a
duly authorized authenticating agent, as in this Indenture provided, the valid, binding and legal obligations of the Company, and this Indenture a valid agreement according to its terms, have been done and performed, and the execution of this
Indenture and the issuance hereunder of the Notes have in all respects been duly authorized. 
 NOW, THEREFORE, THIS INDENTURE WITNESSETH:

 That in order to declare the terms and conditions upon which the Notes are, and are to be, authenticated, issued and delivered, and in
consideration of the premises and of the purchase and acceptance of the Notes by the Holders thereof, the Company covenants and agrees with the Trustee for the equal and proportionate benefit of the respective Holders from time to time of the Notes
(except as otherwise provided below), as follows: 
 ARTICLE 1 

DEFINITIONS 

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

 “Additional Interest” means all amounts, if any, payable pursuant to
Section 4.06(d), Section 4.06(e) and Section 6.03, as applicable. 
 “Additional Shares” shall have the meaning
specified in Section 14.03(a). 
 “Affiliate” of any specified Person means any other Person directly or indirectly
controlling or controlled by or under direct or indirect common control with such specified Person. For the purposes of this definition, “control,” when used with respect to any specified Person, means the power to direct or cause the
direction of the management and policies of such Person, directly or indirectly, whether through the ownership of voting securities, by contract or otherwise; and the terms “controlling” and “controlled” have meanings correlative
to the foregoing. 
 “Affiliate Note” means any Physical Note held by an Affiliate or the Company or initially issued by
the Company to an Affiliate or the Company. 
 “Aggregate Share Cap” shall have the meaning specified in Section
14.02(a)(iv). 
 “Bid Solicitation Agent” means the Company or the Person appointed by the Company to solicit bids for the
Trading Price of the Notes in accordance with Section 14.01(b)(i). The Company shall initially act as the Bid Solicitation Agent. 

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

“Business Day” means, with respect to any Note, any day other than a Saturday, a Sunday or a day on which the Federal Reserve
Bank of New York is authorized or required by law or executive order to close or be closed. 
 “Capital Stock” means, for
any entity, any and all shares, interests, rights to purchase, warrants, options, participations or other equivalents of or interests in (however designated) stock issued by that entity, but for the avoidance of doubt, excluding any debt securities
convertible into such stock. 
 “Cash Settlement” shall have the meaning specified in Section 14.02(a). 

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

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

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

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

  
 2 

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

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

“Common Equity” of any Person means Capital Stock of such Person that is generally entitled (a) to vote in the election
of directors of such Person or (b) if such Person is not a corporation, to vote or otherwise participate in the selection of the governing body, partners, managers or others that will control the management or policies of such Person. 

“Common Stock” means the common stock of the Company, par value $0.0001 per share, at the date of this Indenture, subject to
Section 14.07. 
 “Company” shall have the meaning specified in the first paragraph of this Indenture, and subject to the
provisions of Article 11, shall include its successors and assigns. 
 “Company Order” means a written order of the
Company, signed by an Officer of the Company and delivered to the Trustee. 
 “Conversion Agent” shall have the meaning
specified in Section 4.02. 
 “Conversion Date” shall have the meaning specified in Section 14.02(c). 

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

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

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

“Conversion Share Cap” means, for each $1,000 principal amount of Notes converted, the (a) the Aggregate Share Cap
divided by (b) the aggregate principal amount Notes (expressed in thousands) delivered under this Indenture. The Conversion Share Cap will be rounded to the nearest ten-thousandth, with any one-hundred thousandths rounded downward. 

“Corporate Trust Office” means the principal office of the Trustee at which at any time its corporate trust business shall be
administered, which office at the date hereof is located at 60 Livingston Avenue, EP-MN-WS3C, Saint Paul, MN 55107-1419, Attention: Corporate Trust Services, or such other address as the Trustee may designate from time to time by notice to the
Holders and the Company, or the principal corporate trust office of any successor trustee (or such other address as such successor trustee may designate from time to time by notice to the Holders and the Company). 

“Custodian” means the Trustee, as custodian for The Depository Trust Company, with respect to the Global Notes, or any
successor entity thereto. 
 “Daily Conversion Value” means, for each of the 50 consecutive Trading Days during the
Observation Period, 1/50th of the product of (a) the Conversion Rate on such Trading Day and (b) the Daily VWAP on such Trading Day. 

  
 3 

 “Daily Measurement Value” means the Specified Dollar Amount (if any), divided
by 50. 
 “Daily Settlement Amount,” for each of the 50 consecutive Trading Days during the Observation Period, shall
consist of: 
 (a) cash in an amount equal to the lesser of (i) the Daily Measurement Value and (ii) the Daily
Conversion Value on such Trading Day; and 
 (b) if the Daily Conversion Value on such Trading Day exceeds the Daily
Measurement Value, a number of shares of Common Stock equal to (i) the difference between the Daily Conversion Value and the Daily Measurement Value, divided by (ii) the Daily VWAP for such Trading Day. 

“Daily VWAP” means, for each of the 50 consecutive Trading Days during the relevant Observation Period, the per share
volume-weighted average price as displayed under the heading “Bloomberg VWAP” on Bloomberg page “HZNP US <equity> AQR” (or its equivalent successor if such page is not available) in respect of the period from the scheduled
open of trading until the scheduled close of trading of the primary trading session on such Trading Day (or if such volume-weighted average price is unavailable, the market value of one share of the Common Stock on such Trading Day determined, using
a volume-weighted average method, by a nationally recognized independent investment banking firm retained for this purpose by the Company). The “Daily VWAP” shall be determined without regard to after-hours trading or any other
trading outside of the regular trading session trading hours. 
 “Default” means any event that is, or after notice or
passage of time, or both, would be, an Event of Default. 
 “Defaulted Amounts” means any amounts on any Note (including,
without limitation, the Fundamental Change Repurchase Price, principal and interest) that are payable but are not punctually paid or duly provided for. 

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

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

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

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

“Ex-Dividend Date” means the first date on which shares of the Common Stock trade on the applicable exchange or in the
applicable market, regular way, without the right to receive the issuance, dividend or distribution in question, from the Company or, if applicable, from the seller 

  
 4 

 
of Common Stock on such exchange or market (in the form of due bills or otherwise) as determined by such exchange or market. 

“Exchange Act” means the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder.

 “Form of Assignment and Transfer” means the “Form of Assignment and Transfer” attached as Attachment 3 to the
Form of Note attached hereto as Exhibit A. 
 “Form of Fundamental Change Repurchase Notice” means the “Form of
Fundamental Change Repurchase Notice” attached as Attachment 2 to the Form of Note attached hereto as Exhibit A. 
 “Form of
Note” means the “Form of Note” attached hereto as Exhibit A. 
 “Form of Notice of Conversion” means the
“Form of Notice of Conversion” attached as Attachment 1 to the Form of Note attached hereto as Exhibit A. 
 “Fundamental
Change” shall be deemed to have occurred at the time after the Notes are originally issued if any of the following occurs: 

(a) a “person” or “group” within the meaning of Section 13(d) of the Exchange Act, other than the
Company, its Wholly Owned Subsidiaries and the employee benefit plans of the Company and its Wholly Owned Subsidiaries, files a Schedule TO or any schedule, form or report under the Exchange Act disclosing that such person or group has become the
direct or indirect “beneficial owner,” as defined in Rule 13d-3 under the Exchange Act, of the Company’s Common Equity representing more than 50% of the voting power of the Company’s Common Equity; 

(b) the consummation of (A) any recapitalization, reclassification or change of the Common Stock (other than changes
resulting from a subdivision or combination) as a result of which the Common Stock would be converted into, or exchanged for, stock, other securities, other property or assets; (B) any share exchange, consolidation or merger of the Company
pursuant to which the Common Stock will be converted into cash, securities or other property or assets, other than a merger of the Company solely for the purpose of changing the Company’s jurisdiction of incorporation that results in a
reclassification, conversion or exchange of outstanding shares of Common Stock solely into shares of common stock of the surviving entity; or (C) any sale, lease or other transfer in one transaction or a series of transactions of all or
substantially all of the consolidated assets of the Company and its Subsidiaries, taken as a whole, to any Person other than one of the Company’s direct or indirect Wholly Owned Subsidiaries; provided, however, that a transaction
described in clause (A) or clause (B) in which the holders of all classes of the Company’s Common Equity immediately prior to such transaction own, directly or indirectly, more than 50% of all classes of Common Equity of the
continuing or surviving corporation or transferee or the parent thereof immediately after such transaction in substantially the same proportions (relative to each other) as such 

  
 5 

 
ownership immediately prior to such transaction shall not be a Fundamental Change pursuant to this clause (b); 

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

(d) the Common Stock (or other common stock underlying the Notes) ceases to be listed or quoted on any of The New York Stock
Exchange, The NASDAQ Global Select Market or The NASDAQ Global Market (or any of their respective successors); 
 provided, however, that a
transaction or transactions described in clause (a) or clause (b) above shall not constitute a Fundamental Change, if at least 90% of the consideration received or to be received by the common stockholders of the Company, excluding cash
payments for fractional shares and cash payments made in respect of dissenters’ rights, in connection with such transaction or transactions consists of shares of common stock that are listed or quoted on any of The New York Stock Exchange, The
NASDAQ Global Select Market or The NASDAQ Global Market (or any of their respective successors) or will be so listed or quoted when issued or exchanged in connection with such transaction or transactions and as a result of such transaction or
transactions the Notes become convertible into such consideration, excluding cash payments for fractional shares (subject to the provisions of Section 14.02(a)); and provided, further that any transaction that constitutes a
Fundamental Change pursuant to both clause (a) and clause (b) above shall be deemed a Fundamental Change solely under clause (b) above. 

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

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

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

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

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

“Holder,” as applied to any Note, or other similar terms (but excluding the term “beneficial holder”), means any
Person in whose name at the time a particular Note is registered on the Note Register. 
 “Indenture” means this instrument
as originally executed or, if amended or supplemented as herein provided, as so amended or supplemented. 
 “Interest Payment
Date” means each May 15 and November 15 of each year, beginning on May 15, 2014. 
 “Irrevocable
Election” shall have the meaning specified in Section 14.02(a). 

  
 6 

 “Last Reported Sale Price” of the Common Stock on any date means the closing
sale price per share (or if no closing sale price is reported, the average of the bid and ask prices or, if more than one in either case, the average of the average bid and the average ask prices) on that date as reported in composite transactions
for the principal U.S. national or regional securities exchange on which the Common Stock is traded. If the Common Stock is not listed for trading on a U.S. national or regional securities exchange on the relevant date, the “Last Reported
Sale Price” shall be the last quoted bid price for the Common Stock in the over-the-counter market on the relevant date as reported by OTC Markets Group Inc. or a similar organization. If the Common Stock is not so quoted, the “Last
Reported Sale Price” shall be the average of the mid-point of the last bid and ask prices for the Common Stock on the relevant date from each of at least three nationally recognized independent investment banking firms selected by the
Company for this purpose. 
 “Make-Whole Fundamental Change” means any transaction or event that constitutes a Fundamental
Change (as defined above and determined after giving effect to any exceptions to or exclusions from such definition, but without regard to the proviso in clause (b) of the definition thereof). 

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

“Maturity Date” means November 15, 2018. 

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

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

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

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

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

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

“Observation Period” with respect to any Note surrendered for conversion means: (i) if the relevant Conversion Date
occurs prior to August 15, 2018, the 50 consecutive Trading Day period beginning on, and including, the second Trading Day immediately succeeding such Conversion Date; and (ii) if the relevant Conversion Date occurs during the period from
and 

  
 7 

 
including August 15, 2018 to the close of business on the second Scheduled Trading Day immediately preceding the Maturity Date, the 50 consecutive Trading Days beginning on, and including,
the 52nd Scheduled Trading Day immediately preceding the Maturity Date. 
 “Officer” means, with respect to the Company,
the President, the Chief Executive Officer, Chief Medical Officer, Chief Commercial Officer, the Treasurer, the Secretary, any Executive or Senior Vice President or any Vice President (whether or not designated by a number or numbers or word or
words added before or after the title “Vice President”). 
 “Officer’s Certificate,” when used with respect
to the Company, means a certificate that is delivered to the Trustee and that is signed by an Officer of the Company. Each such certificate shall include the statements provided for in Section 17.05 if and to the extent required by the
provisions of such Section. The Officer giving an Officer’s Certificate pursuant to Section 4.08 shall be the principal executive, financial or accounting officer of the Company. 

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

“Opinion of Counsel” means an opinion in writing signed by legal counsel, who may be an employee of or counsel to the
Company, or other counsel acceptable to the Trustee, that is delivered to the Trustee, which opinion may contain customary exceptions and qualifications as to the matters set forth therein. Each such opinion shall include the statements provided for
in Section 17.05 if and to the extent required by the provisions of such Section 17.05. 
 “outstanding,” when
used with reference to Notes, shall, subject to the provisions of Section 8.04, mean, as of any particular time, all Notes authenticated and delivered by the Trustee under this Indenture, except: 

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

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

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

(d) Notes converted pursuant to Article 14 and required to be canceled pursuant to Section 2.08; and 

(e) Notes repurchased by the Company pursuant to the penultimate sentence of Section 2.10. 

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

  
 8 

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

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

“Predecessor Note” of any particular Note means every previous Note evidencing all or a portion of the same debt as that
evidenced by such particular Note; and, for the purposes of this definition, any Note authenticated and delivered under Section 2.06 in lieu of or in exchange for a mutilated, lost, destroyed or stolen Note shall be deemed to evidence the same debt
as the mutilated, lost, destroyed or stolen Note that it replaces. 
 “Private Placement Memorandum” means the preliminary
private placement memorandum dated November 18, 2018, as supplemented by the related pricing term sheet dated November 18, 2018, relating to the offering and sale of the Notes. 

“Record Date” means, with respect to any dividend, distribution or other transaction or event in which the holders of Common
Stock (or other applicable security) have the right to receive any cash, securities or other property or in which the Common Stock (or such other security) is exchanged for or converted into any combination of cash, securities or other property, the
date fixed for determination of holders of the Common Stock (or such other security) entitled to receive such cash, securities or other property (whether such date is fixed by the Board of Directors, by statute, by contract or otherwise). 

“Reference Property” shall have the meaning specified in Section 14.07(a). 

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

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

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

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

  
 9 

 “Scheduled Trading Day” means a day that is scheduled to be a Trading Day on the
principal U.S. national or regional securities exchange or market on which the Common Stock is listed or admitted for trading. If the Common Stock is not so listed or admitted for trading, “Scheduled Trading Day” means a Business
Day. 
 “Securities Act” means the Securities Act of 1933, as amended, and the rules and regulations promulgated
thereunder. 
 “Settlement Amount” has the meaning specified in Section 14.02(a)(v). 

“Settlement Method” means, with respect to any conversion of Notes, Physical Settlement, Cash Settlement or Combination
Settlement, as elected (or deemed to have been elected) by the Company. 
 “Settlement Notice” has the meaning specified in
Section 14.02(a)(iii). 
 “Significant Subsidiary” means a Subsidiary of the Company that meets the definition of
“significant subsidiary” in Article 1, Rule 1-02 of Regulation S-X under the Exchange Act. 
 “Specified Dollar
Amount” means the maximum cash amount per $1,000 principal amount of Notes being converted to be received upon conversion as specified in the Settlement Notice related to any converted Notes. 

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

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

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

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

“Trading Day” means a day on which (i) trading in the Common Stock (or other security for which a closing sale price
must be determined) generally occurs on The NASDAQ Global Market or, if the Common Stock (or such other security) is not then listed on The NASDAQ Global Market, on the principal other U.S. national or regional securities exchange on which the
Common Stock (or such other security) is then listed or, if the Common Stock (or such other security) is not then listed on a U.S. national or regional securities exchange, on the principal other market on which the Common Stock (or such other
security) is then traded and (ii) a Last Reported Sale Price for the Common Stock (or closing sale price for such other security) is available on such securities exchange or market; provided that if the Common Stock (or such other
security) is not so listed or traded, “Trading Day” means a Business Day; and provided, further, that for purposes of determining amounts due upon conversion only, “Trading Day”

  
 10 

 
means a day on which (x) there is no Market Disruption Event and (y) trading in the Common Stock generally occurs on The NASDAQ Global Market or, if the Common Stock is not then listed
on The NASDAQ Global Market, on the principal other U.S. national or regional securities exchange on which the Common Stock is then listed or, if the Common Stock is not then listed on a U.S. national or regional securities exchange, on the
principal other market on which the Common Stock is then listed or admitted for trading, except that if the Common Stock is not so listed or admitted for trading, “Trading Day” means a Business Day. 

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

“transfer” shall have the meaning specified in Section 2.05(c). 

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

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

“unit of Reference Property” shall have the meaning specified in Section 14.07(a). 

“Valuation Period” shall have the meaning specified in Section 14.04(c). 

“Wholly Owned Subsidiary” means, with respect to any Person, any Subsidiary of such Person, except that, solely for purposes
of this definition, the reference to “50%” in the definition of “Subsidiary” shall be deemed replaced by a reference to “100%,” the calculation of which shall exclude directors’ qualifying shares and other nominal
amounts of the voting power of shares of Capital Stock or other interests that are required to be held by other Persons under applicable law. 

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

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

Section 2.01. Designation and Amount. The Notes shall be designated as the “5.00% Convertible Senior Notes due 2018.”
The aggregate principal amount of Notes that may be authenticated and delivered under this Indenture is initially limited to $150,000,000, subject to Section 2.10 and except for Notes authenticated and delivered upon registration or transfer of, or
in exchange for, or in lieu of other Notes pursuant to Section 2.05, Section 2.06, Section 2.07, Section 10.04, Section 14.02 and Section 15.04. 

Section 2.02. Form of Notes. The Notes and the Trustee’s certificate of authentication to be borne by such Notes shall be
substantially in the respective forms set forth in Exhibit A, the terms and provisions of which shall constitute, and are hereby expressly incorporated in and made a part of this Indenture. To the extent applicable, the Company and the Trustee, by
their execution and delivery of this Indenture, expressly agree to such terms and provisions and to be bound thereby. 
 Any Global Note may
be endorsed with or have incorporated in the text thereof such legends or recitals or changes not inconsistent with the provisions of this Indenture as may be required by the Custodian or the Depositary, or as may be required to comply with any
applicable law or any regulation thereunder or with the rules and regulations of any securities exchange or automated quotation system upon which the Notes may be listed or traded or designated for issuance or to conform with any usage with respect
thereto, or to indicate any special limitations or restrictions to which any particular Notes are subject. 
 Any of the Notes may have such
letters, numbers or other marks of identification and such notations, legends or endorsements as the Officers executing the same may approve (execution thereof to be conclusive evidence of such approval) and as are not inconsistent with the
provisions of this Indenture, or as may be required to comply with any law or with any rule or regulation made pursuant thereto or with any rule or regulation of any securities exchange or automated quotation system on which the Notes may be listed
or designated for issuance, or to conform to usage or to indicate any special limitations or restrictions to which any particular Notes are subject. 

Each Global Note shall represent such principal amount of the outstanding Notes as shall be specified therein and shall provide that it shall
represent the aggregate principal amount of outstanding Notes from time to time endorsed thereon and that the aggregate principal amount of outstanding Notes represented thereby may from time to time be increased or reduced to reflect

  
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repurchases, cancellations, conversions, transfers ,exchanges or issuances of additional Notes permitted hereby (to the extent such issuances are fungible with the Notes represented by such
Global Note for U.S. federal income tax and securities law purposes). Any endorsement of a Global Note to reflect the amount of any increase or decrease in the amount of outstanding Notes represented thereby shall be made by the Trustee or the
Custodian, at the direction of the Trustee, in such manner and upon instructions given by the Holder of such Notes in accordance with this Indenture. Payment of principal (including the Fundamental Change Repurchase Price, if applicable) of, and
accrued and unpaid interest on, a Global Note shall be made to the Holder of such Note on the date of payment, unless a record date or other means of determining Holders eligible to receive payment is provided for herein. 

Section 2.03. Date and Denomination of Notes; Payments of Interest and Defaulted Amounts. (a) The Notes shall be issuable in
registered form without coupons in denominations of $1,000 principal amount and integral multiples thereof. Each Note shall be dated the date of its authentication and shall bear interest from the date specified on the face of such Note. Accrued
interest on the Notes shall be computed on the basis of a 360-day year composed of twelve 30-day months and, for partial months, on the basis of the number of days actually elapsed over a 30-day month. 

(b) The Person in whose name any Note (or its Predecessor Note) is registered on the Note Register at the close of business on any Regular
Record Date with respect to any Interest Payment Date shall be entitled to receive the interest payable on such Interest Payment Date. Interest shall be payable at the office or agency of the Company maintained by the Company for such purposes in
Saint Paul, Minnesota, which shall initially be the Corporate Trust Office. The Company shall pay or cause the Paying Agent to pay interest (i) on any Physical Notes (A) to Holders holding Physical Notes having an aggregate principal
amount of $5,000,000 or less, by check mailed to the Holders of these Notes at their address as it appears in the Note Register and (B) to Holders holding Physical Notes having an aggregate principal amount of more than $5,000,000, either by
check mailed to each Holder or, upon application by such a Holder to the Note Registrar not later than the relevant Regular Record Date, by wire transfer in immediately available funds to that Holder’s account within the United States, which
application shall remain in effect until the Holder notifies, in writing, the Note Registrar to the contrary or (ii) on any Global Note by wire transfer of immediately available funds to the account of the Depositary or its nominee.
Notwithstanding anything to the contrary herein, the Company may pay interest at its option to any Holder by wire transfer in immediately available funds to that Holder’s account, as specified by such Holder, within the United States. 

(c) Any Defaulted Amounts shall forthwith cease to be payable to the Holder on the relevant payment date but shall accrue interest per annum
at the rate borne by the Notes, subject to the enforceability thereof under applicable law, from, and including, such relevant payment date, and such Defaulted Amounts together with such interest thereon shall be paid by the Company, at its election
in each case, as provided in clause (i) or (ii) below: 
 (i) The Company may elect to make payment of any
Defaulted Amounts to the Persons in whose names the Notes (or their respective Predecessor Notes) are registered at the close of business on a special record date for the payment of such Defaulted Amounts, which shall be fixed in the following
manner. The Company shall 

  
 13 

 
notify the Trustee in writing of the amount of the Defaulted Amounts proposed to be paid on each Note and the date of the proposed payment (which shall be not less than 25 days after the receipt
by the Trustee of such notice, unless the Trustee shall consent to an earlier date), and at the same time the Company shall deposit with the Trustee an amount of money equal to the aggregate amount to be paid in respect of such Defaulted Amounts or
shall make arrangements satisfactory to the Trustee for such deposit on or prior to the date of the proposed payment, such money when deposited to be held in trust for the benefit of the Persons entitled to such Defaulted Amounts as in this clause
provided. Thereupon the Company shall fix a special record date for the payment of such Defaulted Amounts which shall be not more than 15 days and not less than 10 days prior to the date of the proposed payment, and not less than 10 days after the
receipt by the Trustee of the notice of the proposed payment (unless the Trustee shall consent to an earlier date). The Company shall promptly notify the Trustee of such special record date and the Trustee, in the name and at the expense of the
Company, shall cause notice of the proposed payment of such Defaulted Amounts and the special record date therefor to be given to each Holder not less than 10 days prior to such special record date. Notice of the proposed payment of such Defaulted
Amounts and the special record date therefor having been so given, such Defaulted Amounts shall be paid to the Persons in whose names the Notes (or their respective Predecessor Notes) are registered at the close of business on such special record
date and shall no longer be payable pursuant to the following clause (ii) of this Section 2.03(c). 
 (ii) The
Company may make payment of any Defaulted Amounts in any other lawful manner not inconsistent with the requirements of any securities exchange or automated quotation system on which the Notes may be listed or designated for issuance, and upon such
notice as may be required by such exchange or automated quotation system, if, after notice given by the Company to the Trustee of the proposed payment pursuant to this clause, such manner of payment shall be deemed practicable by the Trustee. 

Section 2.04. Execution, Authentication and Delivery of Notes. The Notes shall be signed in the name and on behalf of the Company
by the manual or facsimile signature of its Chief Executive Officer, President, Chief Financial Officer, Treasurer, Secretary or any of its Executive or Senior Vice Presidents. 

At any time and from time to time after the execution and delivery of this Indenture, the Company may deliver Notes executed by the Company to
the Trustee for authentication, together with a Company Order for the authentication and delivery of such Notes, and the Trustee in accordance with such Company Order shall authenticate and deliver such Notes, without any further action by the
Company hereunder. 
 Only such Notes as shall bear thereon a certificate of authentication substantially in the form set forth on the form
of Note attached as Exhibit A hereto, executed manually or by facsimile by an authorized officer of the Trustee (or an authenticating agent appointed by the Trustee as provided by Section 17.10), shall be entitled to the benefits of this
Indenture or be valid or obligatory for any purpose. Such certificate by the Trustee (or such an authenticating agent) upon any Note executed by the Company shall be conclusive evidence that the Note so

  
 14 

 
authenticated has been duly authenticated and delivered hereunder and that the Holder is entitled to the benefits of this Indenture. 

In case any Officer of the Company who shall have signed any of the Notes shall cease to be such Officer before the Notes so signed shall have
been authenticated and delivered by the Trustee, or disposed of by the Company, such Notes nevertheless may be authenticated and delivered or disposed of as though the person who signed such Notes had not ceased to be such Officer of the Company;
and any Note may be signed on behalf of the Company by such persons as, at the actual date of the execution of such Note, shall be an Officer of the Company, although at the date of the execution of this Indenture any such person was not such an
Officer. 
 Section 2.05. Exchange and Registration of Transfer of Notes; Restrictions on Transfer; Depositary. (a) The
Company shall cause to be kept at the Corporate Trust Office a register (the register maintained in such office or in any other office or agency of the Company designated pursuant to Section 4.02, the “Note Register”) in which,
subject to such reasonable regulations as it may prescribe, the Company shall provide for the registration of Notes and of transfers of Notes. Such register shall be in written form or in any form capable of being converted into written form within
a reasonable period of time. The Trustee is hereby initially appointed the “Note Registrar” for the purpose of registering Notes and transfers of Notes as herein provided. The Company may appoint one or more co-Note Registrars in
accordance with Section 4.02. 
 Upon surrender for registration of transfer of any Note to the Note Registrar or any co-Note
Registrar, and satisfaction of the requirements for such transfer set forth in this Section 2.05, the Company shall execute, and the Trustee shall authenticate and deliver, in the name of the designated transferee or transferees, one or more new
Notes of any authorized denominations and of a like aggregate principal amount and bearing such restrictive legends as may be required by this Indenture. 

Notes may be exchanged for other Notes of any authorized denominations and of a like aggregate principal amount, upon surrender of the Notes
to be exchanged at any such office or agency maintained by the Company pursuant to Section 4.02. Whenever any Notes are so surrendered for exchange, the Company shall execute, and the Trustee shall authenticate and deliver, the Notes that the Holder
making the exchange is entitled to receive, bearing registration numbers not contemporaneously outstanding. 
 All Notes presented or
surrendered for registration of transfer or for exchange, repurchase or conversion shall (if so required by the Company, the Trustee, the Note Registrar or any co-Note Registrar) be duly endorsed, or be accompanied by a written instrument or
instruments of transfer in form satisfactory to the Company and duly executed, by the Holder thereof or its attorney-in-fact duly authorized in writing. 

No service charge shall be imposed by the Company, the Trustee, the Note Registrar, any co-Note Registrar or the Paying Agent for any exchange
or registration of transfer of Notes, but the Company may require a Holder to pay a sum sufficient to cover any documentary, stamp or similar issue or transfer tax required in connection therewith as a result of the name of the Holder of new Notes
issued upon such exchange or registration of transfer being different from the name of the Holder of the old Notes surrendered for exchange or registration of transfer. 

  
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 None of the Company, the Trustee, the Note Registrar or any co-Note Registrar shall be required
to exchange or register a transfer of (i) any Notes surrendered for conversion or, if a portion of any Note is surrendered for conversion, such portion thereof surrendered for conversion or (ii) any Notes, or a portion of any Note,
surrendered for repurchase (and not withdrawn) in accordance with Article 15. 
 All Notes issued upon any registration of transfer or
exchange of Notes in accordance with this Indenture shall be the valid obligations of the Company, evidencing the same debt, and entitled to the same benefits under this Indenture as the Notes surrendered upon such registration of transfer or
exchange. 
 (b) So long as the Notes (other than Affiliate Notes, if any, which shall be issued as Physical Notes) are eligible for
book-entry settlement with the Depositary, unless otherwise required by law, subject to the sixth paragraph from the end of Section 2.05(c) all Notes shall be represented by one or more Notes in global form (each, a “Global Note”)
registered in the name of the Depositary or the nominee of the Depositary. Each Global Note shall bear the legend required on a Global Note set forth in Exhibit A hereto. The transfer and exchange of beneficial interests in a Global Note that does
not involve the issuance of a Physical Note shall be effected through the Depositary (but not the Trustee or the Custodian) in accordance with this Indenture (including the restrictions on transfer set forth herein) and the procedures of the
Depositary therefor. 
 (c) Every Note that bears or is required under this Section 2.05(c) to bear the legend set forth in this Section
2.05(c) (together with any Common Stock issued upon conversion of the Notes that is required to bear the legend set forth in Section 2.05(d), collectively, the “Restricted Securities”) shall be subject to the restrictions on
transfer set forth in this Section 2.05(c) (including the legend set forth below), unless such restrictions on transfer shall be eliminated or otherwise waived by written consent of the Company, and the Holder of each such Restricted Security, by
such Holder’s acceptance thereof, agrees to be bound by all such restrictions on transfer. As used in this Section 2.05(c) and Section 2.05(d), the term “transfer” encompasses any sale, pledge, transfer or other disposition
whatsoever of any Restricted Security. 
 Until the date (the “Resale Restriction Termination Date”) that is the later of
(1) the date that is one year after the last date of original issuance of the Notes, or such shorter period of time as permitted by Rule 144 under the Securities Act or any successor provision thereto, and (2) such later date, if any, as
may be required by applicable law, any certificate evidencing such Note (and all securities issued in exchange therefor or substitution thereof, other than Common Stock, if any, issued upon conversion thereof, which shall bear the legend set forth
in Section 2.05(d), if applicable) shall bear a legend in substantially the following form (unless such Notes have been transferred pursuant to a registration statement that has become or been declared effective under the Securities Act and that
continues to be effective at the time of such transfer, or sold pursuant to the exemption from registration provided by Rule 144 or any similar provision then in force under the Securities Act, or unless otherwise agreed by the Company in writing,
with notice thereof to the Trustee): 
 THIS SECURITY AND THE COMMON STOCK, IF ANY, ISSUABLE UPON CONVERSION OF THIS SECURITY HAVE NOT BEEN
REGISTERED UNDER THE 

  
 16 

 
SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND MAY NOT BE OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED EXCEPT IN ACCORDANCE WITH THE FOLLOWING SENTENCE. BY ITS
ACQUISITION HEREOF OR OF A BENEFICIAL INTEREST HEREIN, THE ACQUIRER: 
 (1) REPRESENTS THAT IT AND ANY ACCOUNT FOR WHICH IT
IS ACTING IS (A) A “QUALIFIED INSTITUTIONAL BUYER” (WITHIN THE MEANING OF RULE 144A UNDER THE SECURITIES ACT) AND THAT IT EXERCISES SOLE INVESTMENT DISCRETION WITH RESPECT TO EACH SUCH ACCOUNT, OR (B) IT IS AN “ACCREDITED
INVESTOR” WITHIN THE MEANING OF RULE 501 UNDER THE SECURITIES ACT, AND 
 (2) AGREES FOR THE BENEFIT OF HORIZON PHARMA,
INC. (THE “COMPANY”) THAT IT WILL NOT OFFER, SELL, PLEDGE OR OTHERWISE TRANSFER THIS SECURITY OR ANY BENEFICIAL INTEREST HEREIN PRIOR TO THE DATE THAT IS THE LATER OF (X) ONE YEAR AFTER THE LAST ORIGINAL ISSUE DATE HEREOF OR
SUCH SHORTER PERIOD OF TIME AS PERMITTED BY RULE 144 UNDER THE SECURITIES ACT OR ANY SUCCESSOR PROVISION THERETO AND (Y) SUCH LATER DATE, IF ANY, AS MAY BE REQUIRED BY APPLICABLE LAW, EXCEPT: 

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

(B) PURSUANT TO A REGISTRATION STATEMENT WHICH HAS BECOME EFFECTIVE UNDER THE SECURITIES ACT, OR 

(C) TO A QUALIFIED INSTITUTIONAL BUYER IN COMPLIANCE WITH RULE 144A UNDER THE SECURITIES ACT, OR 

(D) PURSUANT TO AN EXEMPTION FROM REGISTRATION PROVIDED BY RULE 144 UNDER THE SECURITIES ACT OR ANY OTHER AVAILABLE EXEMPTION
FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT. 
 PRIOR TO THE REGISTRATION OF ANY TRANSFER IN ACCORDANCE WITH CLAUSE
(2)(D) ABOVE, THE COMPANY AND THE TRUSTEE RESERVE THE RIGHT TO REQUIRE THE DELIVERY OF SUCH LEGAL OPINIONS, CERTIFICATIONS OR OTHER EVIDENCE AS MAY REASONABLY BE REQUIRED IN ORDER TO DETERMINE THAT THE PROPOSED TRANSFER IS BEING MADE IN
COMPLIANCE WITH THE SECURITIES ACT AND APPLICABLE STATE SECURITIES LAWS. NO REPRESENTATION IS MADE AS TO THE AVAILABILITY OF ANY EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT. 

Notwithstanding the foregoing, the foregoing legend shall not be removed from any Affiliate Note unless and until such Note is
(i) transferred or exchanged pursuant to an effective registration statement under the Securities Act or (ii) transferred in a transaction that results in such Note no longer being a Restricted Security. 

  
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 In addition, each Note shall bear a legend in substantially the following form (unless otherwise
agreed by the Company in writing, with notice thereof to the Trustee): 
 NO AFFILIATE (AS DEFINED IN RULE 144 UNDER THE SECURITIES ACT OF
1933, AS AMENDED (THE “SECURITIES ACT”)) OF THE COMPANY OR PERSON THAT HAS BEEN AN AFFILIATE (AS DEFINED IN RULE 144 UNDER THE SECURITIES ACT) OF THE COMPANY DURING THE THREE IMMEDIATELY PRECEDING MONTHS MAY OFFER, SELL, PLEDGE OR
OTHERWISE TRANSFER THIS SECURITY OR A BENEFICIAL INTEREST HEREIN UNLESS PURSUANT TO A REGISTRATION STATEMENT WHICH HAS BECOME EFFECTIVE UNDER THE SECURITIES ACT OR PURSUANT TO AN EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT IN
A TRANSACTION THAT RESULTS IN SUCH SECURITY OR COMMON STOCK, AS THE CASE MAY BE, NO LONGER BEING A “RESTRICTED SECURITY” (AS DEFINED IN RULE 144 UNDER THE SECURITIES ACT). 

No transfer of any Note prior to the Resale Restriction Termination Date will be registered by the Note Registrar unless the applicable box on
the Form of Assignment and Transfer has been checked. 
 Any Note (or security issued in exchange or substitution therefor) as to which such
restrictions on transfer shall have expired in accordance with their terms may, upon surrender of such Note for exchange to the Note Registrar in accordance with the provisions of this Section 2.05, be exchanged for a new Note or Notes, of like
tenor and aggregate principal amount, which shall not bear the restrictive legend required by this Section 2.05(c) and shall not be assigned a restricted CUSIP number. The Company shall be entitled to instruct the Custodian in writing to so
surrender any Global Note as to which such restrictions on transfer shall have expired in accordance with their terms for exchange, and, upon such instruction, the Custodian shall so surrender such Global Note for exchange; and any new Global Note
so exchanged therefor shall not bear the restrictive legend specified in this Section 2.05(c) and shall not be assigned a restricted CUSIP number. The Company shall promptly notify the Trustee upon the occurrence of the Resale Restriction
Termination Date and promptly after a registration statement, if any, with respect to the Notes or any Common Stock issued upon conversion of the Notes has been declared effective under the Securities Act. 

Notwithstanding any other provisions of this Indenture (other than the provisions set forth in this Section 2.05(c)), a Global Note may not be
transferred as a whole or in part except (i) by the Depositary to a nominee of the Depositary or by a nominee of the Depositary to the Depositary or another nominee of the Depositary or by the Depositary or any such nominee to a successor
Depositary or a nominee of such successor Depositary and (ii) for transfers of portions of a Global Note 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 2.05(c). 

The Depositary shall be a clearing agency registered under the Exchange Act. The Company initially appoints The Depository Trust Company to
act as Depositary with respect to each Global Note. Initially, each Global Note shall be issued to the Depositary, registered in the 

  
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name of Cede & Co., as the nominee of the Depositary, and deposited with the Trustee as custodian for Cede & Co. 

If (i) the Depositary notifies the Company at any time that the Depositary is unwilling or unable to continue as depositary for the
Global Notes and a successor depositary is not appointed within 90 days, (ii) the Depositary ceases to be registered as a clearing agency under the Exchange Act and a successor depositary is not appointed within 90 days, (iii) an Event of
Default with respect to the Notes has occurred and is continuing and a beneficial owner of any Note requests that its beneficial interest therein be issued as a Physical Note, or (iv) the Company and a beneficial holder of any Global Note agree
that such beneficial holder’s interests therein be issued as a Physical Note, the Company shall execute, and the Trustee, upon receipt of an Officer’s Certificate and a Company Order for the authentication and delivery of Notes, shall
authenticate and deliver (x) in the case of clause (iii) or (iv), a Physical Note to such beneficial owner in a principal amount equal to the principal amount of such Note corresponding to such beneficial owner’s beneficial interest
and (y) in the case of clause (i) or (ii), Physical Notes to each beneficial owner of the related Global Notes (or a portion thereof) in an aggregate principal amount equal to the aggregate principal amount of such Global Notes in exchange
for such Global Notes, and upon delivery of the Global Notes to the Trustee such Global Notes shall be canceled. 
 Physical Notes issued in
exchange for all or a part of the Global Note pursuant to this Section 2.05(c) shall be registered in such names and in such authorized denominations as the Depositary, pursuant to instructions from its direct or indirect participants or otherwise,
shall instruct the Trustee. Upon execution and authentication, the Trustee shall deliver such Physical Notes to the Persons in whose names such Physical Notes are so registered. 

At such time as all interests in a Global Note have been converted, canceled, repurchased or transferred, such Global Note shall be, upon
receipt thereof, canceled by the Trustee in accordance with standing procedures and existing instructions between the Depositary and the Custodian. At any time prior to such cancellation, if any interest in a Global Note is exchanged for Physical
Notes, converted, canceled, repurchased or transferred to a transferee who receives Physical Notes therefor or any Physical Note is exchanged or transferred for part of such Global Note, the principal amount of such Global Note shall, in accordance
with the standing procedures and instructions existing between the Depositary and the Custodian, be appropriately reduced or increased, as the case may be, and an endorsement shall be made on such Global Note, by the Trustee or the Custodian, at the
direction of the Trustee, to reflect such reduction or increase. 
 None of the Company, the Trustee or any agent of the Company or the
Trustee shall have any responsibility or liability for any aspect of the records relating to or payments made on account of beneficial ownership interests of a Global Note or maintaining, supervising or reviewing any records relating to such
beneficial ownership interests. 
 Notwithstanding any other provisions of this Indenture (other than the provisions set forth in this
Section 2.05(c)), when Physical Notes are presented to the Note Registrar with a request: (x) to register the transfer of such Physical Notes; or (y) to exchange such Physical Notes for an equal principal amount of Physical Notes of
other authorized denominations, the Note Registrar shall register the transfer or make the exchange as requested if its reasonable requirements for 

  
 19 

 
such transaction are met; provided, however, that the Physical Notes surrendered for transfer or exchange: (i) shall be duly endorsed or accompanied by a written instrument of
transfer in form reasonably satisfactory to the Company and the Note Registrar, duly executed by the Holder thereof or its attorney duly authorized in writing; and (ii) so long as such Notes are “restricted securities” (as defined
under Rule 144), such Notes are being transferred or exchanged pursuant to an effective registration statement under the Securities Act or pursuant to clause (A), (B) or (C) below, and are accompanied by the following additional
information and documents, as applicable: (A) if such Physical Notes are being delivered to the Note Registrar by a Holder for registration in the name of such Holder, without transfer, a certification from such Holder to that effect;
(B) if such Physical Notes are being transferred to the Company, a certification to that effect; or (C) if such Physical Notes are being transferred pursuant to an exemption from registration, (1) a certification to that effect (in
the “Form of Assignment and Transfer” attached as Attachment 3 to the Form of Note attached hereto as Exhibit A, if applicable) and (2) if the Company so requests, an opinion of counsel in form and substance reasonably satisfactory to
it or other evidence in form and substance reasonably satisfactory to it as to the compliance with the restrictions set forth in the legend thereon. 

Notwithstanding any other provisions of this Indenture (other than the provisions set forth in this Section 2.05(c)), no transfer of any
Affiliate Note will be registered by the Note Registrar unless the applicable box on the Form of Assignment and Transfer has been checked. After the Resale Restriction Termination Date, the Holder of an Affiliate Note may exchange such Note for a
beneficial interest in a Global Note or transfer such Affiliate Note to a Person who takes delivery thereof in the form of a beneficial interest in a Global Note only if the Trustee receives: (i) a Physical Note, duly endorsed or accompanied by
appropriate instruments of transfer in form satisfactory to the Trustee, (ii) a certificate from such Holder certifying as follows: (A) in the case of a proposed exchange, such Holder (1) is not an Affiliate of the Company and has not
been an Affiliate of the Company during the three immediately preceding months, and (2) one year has elapsed since the later of the date the Affiliate Notes were acquired from the Company or from an Affiliate of the Company, or (B) in the
case of a proposed transfer, such representations as are necessary to establish that such Holder’s proposed transfer of the Affiliate Note satisfies all applicable requirements set forth in Rule 144 under the Securities Act or that such
Holder’s proposed transfer of Affiliate Notes was effected pursuant to an effective registration statement covering the resale of such Affiliate Note, (iii) if the Company so requests, an opinion of counsel in form and substance reasonably
satisfactory to the Company to the effect that such proposed exchange or transfer is in compliance with the safe harbor contained in Rule 144 under the Securities Act and that the restrictions on transfer contained on such Affiliate Note are no
longer required in order to maintain compliance with such safe harbor or that such transfer was effected pursuant to an effective registration statement covering the sale of such Affiliate Note, and (iii) written instructions directing the
Trustee to make, or to direct the Note Registrar to make, an adjustment to its books and records with respect to such Global Note to reflect an increase in the aggregate principal amount of the Notes represented by the Global Note, such instructions
to contain information regarding the Depositary account to be credited with such increase. Upon such transfer, then the Trustee shall cancel such Physical Note and cause, or direct the Note Registrar to cause, in accordance with the standing
instructions and procedures existing between the Depositary and the Registrar, the aggregate principal amount of the Physical Note to be exchanged, and shall credit or cause to be credit to the account of the Person

  
 20 

 
specified in such instructions a beneficial interest in the Global Note equal to the principal amount of the Physical Note so cancelled. If no Global Notes are then outstanding, the Company shall
issue and the Trustee shall authenticate, upon written order of the Company in the form of a Company Order, a new Global Note in the appropriate principal amount. 

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

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

(1) REPRESENTS THAT IT AND ANY ACCOUNT FOR WHICH IT IS ACTING IS (A) A “QUALIFIED INSTITUTIONAL BUYER” (WITHIN
THE MEANING OF RULE 144A UNDER THE SECURITIES ACT) AND THAT IT EXERCISES SOLE INVESTMENT DISCRETION WITH RESPECT TO EACH SUCH ACCOUNT, OR (B) IT IS AN “ACCREDITED INVESTOR” WITHIN THE MEANING OF RULE 501 UNDER THE SECURITIES ACT, AND

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

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

(B) PURSUANT TO A REGISTRATION STATEMENT WHICH HAS BECOME EFFECTIVE UNDER THE SECURITIES ACT, OR 

  
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 (C) TO A QUALIFIED INSTITUTIONAL BUYER IN COMPLIANCE WITH RULE 144A UNDER THE
SECURITIES ACT, OR 
 (D) PURSUANT TO AN EXEMPTION FROM REGISTRATION PROVIDED BY RULE 144 UNDER THE SECURITIES ACT OR ANY
OTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT. 
 PRIOR TO THE REGISTRATION OF ANY TRANSFER IN
ACCORDANCE WITH CLAUSE (2)(D) ABOVE, THE COMPANY AND THE TRANSFER AGENT FOR THE COMPANY’S COMMON STOCK RESERVE THE RIGHT TO REQUIRE THE DELIVERY OF SUCH LEGAL OPINIONS, CERTIFICATIONS OR OTHER EVIDENCE AS MAY REASONABLY BE REQUIRED IN
ORDER TO DETERMINE THAT THE PROPOSED TRANSFER IS BEING MADE IN COMPLIANCE WITH THE SECURITIES ACT AND APPLICABLE STATE SECURITIES LAWS. NO REPRESENTATION IS MADE AS TO THE AVAILABILITY OF ANY EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE
SECURITIES ACT. 
 Notwithstanding the foregoing, the foregoing legend shall not be removed from any such Common Stock held by an Affiliate
unless and until such Common Stock is (i) transferred or exchanged pursuant to an effective registration statement under the Securities Act or (ii) transferred in a transaction that results in such Common Stock no longer being a Restricted
Security. 
 Any such Common Stock as to which such restrictions on transfer shall have expired in accordance with their terms may, upon
surrender of the certificates representing such shares of Common Stock for exchange in accordance with the procedures of the transfer agent for the Common Stock, be exchanged for a new certificate or certificates for a like aggregate number of
shares of Common Stock, which shall not bear the restrictive legend required by this Section 2.05(d). 
 (e) Any Note or Common Stock issued
upon the conversion or exchange of a Note that is repurchased or owned by any Affiliate of the Company (or any Person who was an Affiliate of the Company at any time during the three months preceding) may not be resold by such Affiliate (or such
Person, as the case may be) unless registered under the Securities Act or resold pursuant to an exemption from the registration requirements of the Securities Act in a transaction that results in such Note or Common Stock, as the case may be, no
longer being a “restricted security” (as defined under Rule 144 under the Securities Act). The Company shall cause any Note that is repurchased or owned by it to be surrendered to the Trustee for cancellation in accordance with Section
2.08. 
 Section 2.06. Mutilated, Destroyed, Lost or Stolen Notes. In case any Note shall become mutilated or be destroyed, lost
or stolen, the Company in its discretion may execute, and upon receipt of a Company Order the Trustee or an authenticating agent appointed by the Trustee shall authenticate and deliver, a new Note, bearing a registration number not contemporaneously
outstanding, in exchange and substitution for the mutilated Note, or in lieu of and in substitution for the Note so destroyed, lost or stolen. In every case the applicant for a substituted Note shall

  
 22 

 
furnish to the Company, to the Trustee and, if applicable, to such authenticating agent such security or indemnity as may be required by them to save each of them harmless from any loss,
liability, cost or expense caused by or connected with such substitution, and, in every case of destruction, loss or theft, the applicant shall also furnish to the Company, to the Trustee and, if applicable, to such authenticating agent evidence to
their satisfaction of the destruction, loss or theft of such Note and of the ownership thereof. 
 The Trustee or such authenticating agent
may authenticate any such substituted Note and deliver the same upon the receipt of such security or indemnity as the Trustee, the Company and, if applicable, such authenticating agent may require. No service charge shall be imposed by the Company,
the Trustee, the Note Registrar, any co-Note Registrar or the Paying Agent upon the issuance of any substitute Note, but the Company may require a Holder to pay a sum sufficient to cover any documentary, stamp or similar issue or transfer tax
required in connection therewith as a result of the name of the Holder of the new substitute Note being different from the name of the Holder of the old Note that became mutilated or was destroyed, lost or stolen. In case any Note that has matured
or is about to mature or has been surrendered for required repurchase or is about to be converted in accordance with Article 14 shall become mutilated or be destroyed, lost or stolen, the Company may, in its sole discretion, instead of issuing a
substitute Note, pay or authorize the payment of or convert or authorize the conversion of the same (without surrender thereof except in the case of a mutilated Note), as the case may be, if the applicant for such payment or conversion shall furnish
to the Company, to the Trustee and, if applicable, to such authenticating agent such security or indemnity as may be required by them to save each of them harmless for any loss, liability, cost or expense caused by or connected with such
substitution, and, in every case of destruction, loss or theft, evidence satisfactory to the Company, the Trustee and, if applicable, any Paying Agent or Conversion Agent evidence of their satisfaction of the destruction, loss or theft of such Note
and of the ownership thereof. 
 Every substitute Note issued pursuant to the provisions of this Section 2.06 by virtue of the fact that any
Note is destroyed, lost or stolen shall constitute an additional contractual obligation of the Company, whether or not the destroyed, lost or stolen Note shall be found at any time, and shall be entitled to all the benefits of (but shall be subject
to all the limitations set forth in) this Indenture equally and proportionately with any and all other Notes duly issued hereunder. To the extent permitted by law, all Notes shall be held and owned upon the express condition that the foregoing
provisions are exclusive with respect to the replacement, payment, conversion or repurchase of mutilated, destroyed, lost or stolen Notes and shall preclude any and all other rights or remedies notwithstanding any law or statute existing or
hereafter enacted to the contrary with respect to the replacement, payment, conversion or repurchase of negotiable instruments or other securities without their surrender. 

Section 2.07. Temporary Notes. Pending the preparation of Physical Notes, the Company may execute and the Trustee or an
authenticating agent appointed by the Trustee shall, upon written request of the Company, authenticate and deliver temporary Notes (printed or lithographed). Temporary Notes shall be issuable in any authorized denomination, and substantially in the
form of the Physical Notes but with such omissions, insertions and variations as may be appropriate for temporary Notes, all as may be determined by the Company. Every such temporary Note shall be executed by the Company and authenticated by the
Trustee or such authenticating agent upon the same conditions and in substantially the same manner, and with 

  
 23 

 
the same effect, as the Physical Notes. Without unreasonable delay, the Company shall execute and deliver to the Trustee or such authenticating agent Physical Notes (other than any Global Note)
and thereupon any or all temporary Notes (other than any Global Note) may be surrendered in exchange therefor, at each office or agency maintained by the Company pursuant to Section 4.02 and the Trustee or such authenticating agent shall
authenticate and deliver in exchange for such temporary Notes an equal aggregate principal amount of Physical Notes. Such exchange shall be made by the Company at its own expense and without any charge therefor. Until so exchanged, the temporary
Notes shall in all respects be entitled to the same benefits and subject to the same limitations under this Indenture as Physical Notes authenticated and delivered hereunder. 

Section 2.08. Cancellation of Notes Paid, Converted, Etc. The Company shall cause all Notes surrendered for the purpose of
payment, repurchase, registration of transfer or exchange or conversion, if surrendered to any Person other than the Trustee (including any of the Company’s Agents, Subsidiaries or Affiliates), to be surrendered to the Trustee for cancellation.
All Notes delivered to the Trustee shall be canceled promptly by it, and no Notes shall be authenticated in exchange thereof except as expressly permitted by any of the provisions of this Indenture. The Trustee shall dispose of canceled Notes in
accordance with its customary procedures and, after such disposition, shall deliver a certificate of such disposition to the Company, at the Company’s written request in a Company Order. 

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

Section 2.10. Additional Notes; Repurchases. The Company may, without the consent of the Holders and notwithstanding
Section 2.01, reopen this Indenture and issue additional Notes hereunder with the same terms and with the same CUSIP number as the Notes initially issued hereunder (other than differences in the issue price and interest accrued prior to the
issue date of such additional Notes) in an unlimited aggregate principal amount; provided that if any such additional Notes are not fungible with the Notes initially issued hereunder for U.S. federal income tax or securities law purposes,
such additional Notes shall have one or more CUSIP numbers. Prior to the issuance of any such additional Notes, the Company shall deliver to the Trustee a Company Order, an Officer’s Certificate and an Opinion of Counsel, such Officer’s
Certificate and Opinion of Counsel to cover such matters, in addition to those required by Section 17.05, as the Trustee shall reasonably request. In addition, the Company may, to the extent permitted by law, and directly or indirectly
(regardless of whether such Notes are surrendered to the Company), repurchase Notes in the open market or otherwise, whether by the Company or its Subsidiaries or through a private or public tender or exchange offer or through counterparties to
private agreements, including by cash-settled swaps or other derivatives. The Company shall cause any Notes so repurchased (other than Notes repurchased pursuant to cash-settled swaps or other derivatives) to be surrendered to the Trustee for
cancellation in accordance with Section 2.08. 

  
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 ARTICLE 3 

SATISFACTION AND DISCHARGE 

Section 3.01. Satisfaction and Discharge. This Indenture shall upon request of the Company contained in an Officer’s
Certificate cease to be of further effect, and the Trustee, at the expense of the Company, shall execute proper instruments acknowledging satisfaction and discharge of this Indenture, when (a) (i) all Notes theretofore authenticated and
delivered (other than (x) Notes which have been destroyed, lost or stolen and which have been replaced or paid as provided in Section 2.06 and (y) Notes for whose payment money has theretofore been deposited in trust or segregated and held
in trust by the Company and thereafter repaid to the Company or discharged from such trust, as provided in Section 4.04(d)) have been delivered to the Trustee for cancellation; or (ii) the Company has deposited with the Trustee or delivered to
Holders, as applicable, after the Notes have become due and payable, whether on the Maturity Date, any Fundamental Change Repurchase Date, upon conversion or otherwise, cash or cash, shares of Common Stock or a combination thereof, as applicable,
solely to satisfy the Company’s Conversion Obligation, sufficient to pay all of the outstanding Notes and all other sums due and payable under this Indenture by the Company; and (b) the Company has delivered to the Trustee an
Officer’s Certificate and an Opinion of Counsel, each stating that all conditions precedent herein provided for relating to the satisfaction and discharge of this Indenture have been complied with. Notwithstanding the satisfaction and discharge
of this Indenture, the obligations of the Company to the Trustee under Section 7.06 shall survive. 
 ARTICLE 4 

PARTICULAR COVENANTS OF THE COMPANY 

Section 4.01. Payment of Principal and Interest. The Company covenants and agrees that it will cause to be paid the principal
(including the Fundamental Change Repurchase Price, if applicable) of, and accrued and unpaid interest on, each of the Notes at the places, at the respective times and in the manner provided herein and in the Notes. 

Section 4.02. Maintenance of Office or Agency. The Company will maintain in Saint Paul, Minnesota, an office or agency where the
Notes may be surrendered for registration of transfer or exchange or for presentation for payment or repurchase (“Paying Agent”) or for conversion (“Conversion Agent”) and where notices and demands to or upon the
Company in respect of the Notes and this Indenture may be served. The Company will give prompt written notice to the Trustee of the location, and any change in the location, of such office or agency. If at any time the Company shall fail to maintain
any such required office or agency or shall fail to furnish the Trustee with the address thereof, such presentations, surrenders, notices and demands may be made or served at the Corporate Trust Office or the office or agency of the Trustee in Saint
Paul, Minnesota. 
 The Company may also from time to time designate as co-Note Registrars one or more other offices or agencies where the
Notes may be presented or surrendered for any or all such purposes and may from time to time rescind such designations; provided that no such designation or rescission shall in any manner relieve the Company of its obligation to maintain an
office or agency in Saint Paul, Minnesota, for such purposes. The Company will give prompt written 

  
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notice to the Trustee of any such designation or rescission and of any change in the location of any such other office or agency. The terms “Paying Agent” and “Conversion
Agent” include any such additional or other offices or agencies, as applicable. 
 The Company hereby initially designates the
Trustee as the Paying Agent, Note Registrar, Custodian and Conversion Agent and the Corporate Trust Office as the office or agency in Saint Paul, Minnesota, where Notes may be surrendered for registration of transfer or exchange or for presentation
for payment or repurchase or for conversion and where notices and demands to or upon the Company in respect of the Notes and this Indenture may be served. 

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

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

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

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

(iii) that at any time during the continuance of an Event of Default, upon request of the Trustee, it will forthwith pay to the
Trustee all sums so held in trust. 
 The Company shall, on or before each due date of the principal (including the Fundamental Change
Repurchase Price, if applicable) of, or accrued and unpaid interest on, the Notes, deposit with the Paying Agent a sum sufficient to pay such principal (including the Fundamental Change Repurchase Price, if applicable) or accrued and unpaid
interest, and (unless such Paying Agent is the Trustee) the Company will promptly notify the Trustee of any failure to take such action; provided that if such deposit is made on the due date, such deposit must be received by the Paying Agent
by 11:00 a.m., New York City time, on such date. 
 (b) If the Company shall act as its own Paying Agent, it will, on or before each due
date of the principal (including the Fundamental Change Repurchase Price, if applicable) of, and accrued and unpaid interest on, the Notes, set aside, segregate and hold in trust for the benefit of the Holders of the Notes a sum sufficient to pay
such principal (including the Fundamental Change Repurchase Price, if applicable) and accrued and unpaid interest so becoming due and will promptly notify the Trustee in writing of any failure to take such action and of any failure by the Company to
make any payment of the principal (including the Fundamental Change 

  
 26 

 
Repurchase Price, if applicable) of, or accrued and unpaid interest on, the Notes when the same shall become due and payable. 

(c) Anything in this Section 4.04 to the contrary notwithstanding, the Company may, at any time, for the purpose of obtaining a satisfaction
and discharge of this Indenture, or for any other reason, pay, cause to be paid or deliver to the Trustee all sums or amounts held in trust by the Company or any Paying Agent hereunder as required by this Section 4.04, such sums or amounts to be
held by the Trustee upon the trusts herein contained and upon such payment or delivery by the Company or any Paying Agent to the Trustee, the Company or such Paying Agent shall be released from all further liability but only with respect to such
sums or amounts. 
 (d) Any money and shares of Common Stock deposited with the Trustee or any Paying Agent, or then held by the Company, in
trust for the payment of the principal (including the Fundamental Change Repurchase Price, if applicable) of, accrued and unpaid interest on and the consideration due upon conversion of any Note and remaining unclaimed for two years after such
principal (including the Fundamental Change Repurchase Price, if applicable), interest or consideration due upon conversion has become due and payable shall be paid to the Company on request of the Company contained in an Officer’s Certificate,
or (if then held by the Company) shall be discharged from such trust; and the Holder of such Note shall thereafter, as an unsecured general creditor, look only to the Company for payment thereof, and all liability of the Trustee or such Paying Agent
with respect to such trust money and shares of Common Stock, and all liability of the Company as trustee thereof, shall thereupon cease. 

Section 4.05. Existence. Subject to Article 11, the Company shall do or cause to be done all things necessary to preserve and keep
in full force and effect its corporate existence. 
 Section 4.06. Rule 144A Information Requirement and Annual Reports.
(a) At any time the Company is not subject to Section 13 or 15(d) of the Exchange Act, the Company shall, so long as any of the Notes or any shares of Common Stock issuable upon conversion thereof shall, at such time, constitute
“restricted securities” within the meaning of Rule 144(a)(3) under the Securities Act, promptly provide to the Trustee and, upon written request, provide to any Holder, beneficial owner or prospective purchaser of such Notes or any shares
of Common Stock issuable upon conversion of such Notes, the information required to be delivered pursuant to Rule 144A(d)(4) under the Securities Act to facilitate the resale of such Notes or shares of Common Stock pursuant to Rule 144A. 

(b) The Company shall file with the Trustee, within 15 days after the same are required to be filed with the Commission (giving effect to any
grace period provided by Rule 12b-25 or any successor rule under the Exchange Act), copies of any annual or quarterly reports (on Form 10-K or Form 10-Q or any successor form) that the Company is required to file with the Commission pursuant to
Section 13 or 15(d) of the Exchange Act (excluding any such information, documents or reports, or potions thereof, subject to confidential treatment). Any such document or report that the Company files with the Commission via the
Commission’s EDGAR system (or any successor thereto) shall be deemed to be filed with the Trustee for purposes of this Section 4.06(b) at the time such documents are filed via the EDGAR system (or any successor thereto); provided
that the Trustee shall have no obligation whatsoever to 

  
 27 

 
determine whether or not such reports have been filed via the EDGAR system (or such successor). 

(c) Delivery of the reports and documents described in subsection (b) above to the Trustee is for informational purposes only, and the
Trustee’s receipt of such shall not constitute constructive notice of any information contained therein or determinable from information contained therein, including the Company’s compliance with any of its covenants hereunder (as to which
the Trustee is entitled to conclusively rely on an Officer’s Certificate). 
 (d) If, at any time during the six-month period beginning
on, and including, the date that is six months after the last date of original issuance of the Notes, the Company fails to timely file any document or report that it is required to file with the Commission pursuant to Section 13 or 15(d) of the
Exchange Act, as applicable (after giving effect to all applicable grace periods thereunder and other than reports on Form 8-K), or the Notes are not otherwise freely tradable by Holders other than the Company’s Affiliates or Holders that were
the Company’s Affiliates at any time during the three months preceding (as a result of restrictions pursuant to U.S. securities laws or the terms of this Indenture or the Notes), the Company shall pay Additional Interest on the Notes. Such
Additional Interest shall accrue on the Notes at the rate of 0.50% per annum of the principal amount of the Notes outstanding for each day during such period for which the Company’s failure to file has occurred and is continuing or the
Notes are not otherwise freely tradable during such period by Holders other than the Company’s Affiliates (or Holders that have been the Company’s Affiliates at any time during the three months preceding) without restrictions pursuant to
U.S. securities laws or the terms of this Indenture or the Notes. As used in this Section 4.06(d), documents or reports that the Company is required to “file” with the Commission pursuant to Section 13 or 15(d) of the Exchange
Act does not include documents or reports that the Company furnishes to the Commission pursuant to Section 13 or 15(d) of the Exchange Act. 

(e) If, and for so long as, the restrictive legend on the Notes specified in Section 2.05(c) has not been removed (or deemed removed),
the Notes are assigned a restricted CUSIP number or the Notes are not otherwise freely tradable by Holders other than the Company’s Affiliates or Holders that were the Company’s Affiliates at any time during the three months preceding
(without restrictions pursuant to U.S. securities laws or the terms of this Indenture or the Notes) as of the 375th day after the last date of original issuance of the Notes (in each case other than with respect to Affiliate Notes), the Company
shall pay Additional Interest on the Notes (other than Affiliate Notes) at a rate equal to 0.50% per annum of the principal amount of affected Notes outstanding until the restrictive legend on the Notes has been removed in accordance with
Section 2.05(c) (or deemed removed), the Notes are assigned an unrestricted CUSIP number and the Notes are freely tradable by Holders other than the Company’s Affiliates (or Holders that were the Company’s Affiliates at any time
during the three months preceding) (without restrictions pursuant to U.S. securities laws or the terms of this Indenture or the Notes). 

(f) Additional Interest will be payable in arrears on each Interest Payment Date following accrual in the same manner as regular interest on
the Notes as set forth in Section 2.03(h). 

  
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 (g) The Additional Interest that is payable in accordance with Section 4.06(d) or
Section 4.06(e) shall be in addition to, and not in lieu of, any Additional Interest that may be payable as a result of the Company’s election pursuant to Section 6.03. However, in no event shall Additional Interest accrue under the terms
of this Indenture (aggregating any Additional Interest payable pursuant to this Section 6.03 with any Additional Interest payable pursuant to Section 4.06(d) or Section 4.06(e)) at a rate per year in excess of 0.50%, regardless of the
number of events or circumstances giving rise to the requirement to pay such Additional Interest. 
 (h) If Additional Interest is payable
by the Company pursuant to Section 4.06(d), Section 4.06(e) or Section 6.03, the Company shall deliver to the Trustee an Officer’s Certificate to that effect stating (i) the amount of such Additional Interest that is payable
and (ii) the date on which such Additional Interest is payable. Unless and until a Responsible Officer of the Trustee receives at the Corporate Trust Office such a certificate, the Trustee may assume without inquiry that no such Additional
Interest is payable. If the Company has paid Additional Interest directly to the Persons entitled to it, the Company shall deliver to the Trustee an Officer’s Certificate setting forth the particulars of such payment. 

Section 4.07. Stay, Extension and Usury Laws. The Company covenants (to the extent that it may lawfully do so) that it shall not
at any time insist upon, plead, or in any manner whatsoever claim or take the benefit or advantage of, any stay, extension or usury law or other law that would prohibit or forgive the Company from paying all or any portion of the principal of or
interest on the Notes as contemplated herein, wherever enacted, now or at any time hereafter in force, or that may affect the covenants or the performance of this Indenture; and the Company (to the extent it may lawfully do so) hereby expressly
waives all benefit or advantage of any such law, and covenants that it will not, by resort to any such law, hinder, delay or impede the execution of any power herein granted to the Trustee, but will suffer and permit the execution of every such
power as though no such law had been enacted. 
 Section 4.08. Compliance Certificate; Statements as to Defaults. The Company
shall deliver to the Trustee within 120 days after the end of each fiscal year of the Company (beginning with the fiscal year ending on December 31, 2013) an Officer’s Certificate stating whether the signers thereof have knowledge of any
failure by the Company to comply with all conditions and covenants then required to be performed under this Indenture and, if so, specifying each such failure and the nature thereof. 

In addition, the Company shall deliver to the Trustee, as soon as possible, and in any event within 30 days after the occurrence of any Event
of Default or Default, an Officer’s Certificate setting forth the details of such Event of Default or Default, its status and the action that the Company is taking or proposing to take in respect thereof. 

Section 4.09. Further Instruments and Acts. Upon request of the Trustee, the Company will execute and deliver such further
instruments and do such further acts as may be reasonably necessary or proper to carry out more effectively the purposes of this Indenture. 

  
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 ARTICLE 5 

LISTS OF HOLDERS AND REPORTS BY THE
COMPANY AND THE TRUSTEE 
 Section 5.01. Lists of Holders. The
Company covenants and agrees that it will furnish or cause to be furnished to the Trustee, semi-annually, not more than 15 days after each May 15 and November 15 in each year beginning with May 15, 2014, and at such other times as the
Trustee may request in writing, within 30 days after receipt by the Company of any such request (or such lesser time as the Trustee may reasonably request in order to enable it to timely provide any notice to be provided by it hereunder), a list in
such form as the Trustee may reasonably require of the names and addresses of the Holders as of a date not more than 15 days (or such other date as the Trustee may reasonably request in order to so provide any such notices) prior to the time such
information is furnished, except that no such list need be furnished so long as the Trustee is acting as Note Registrar. 

Section 5.02. Preservation and Disclosure of Lists. The Trustee shall preserve, in as current a form as is reasonably practicable,
all information as to the names and addresses of the Holders contained in the most recent list furnished to it as provided in Section 5.01 or maintained by the Trustee in its capacity as Note Registrar, if so acting. The Trustee may destroy any list
furnished to it as provided in Section 5.01 upon receipt of a new list so furnished. 
 ARTICLE 6 

DEFAULTS AND REMEDIES 

Section 6.01. Events of Default. Each of the following events shall be an “Event of Default” with respect to the
Notes: 
 (a) default in any payment of interest on any Note when due and payable, and the default continues for a period of 30 days; 

(b) default in the payment of principal (including the Fundamental Change Repurchase Price, if applicable) of any Note when due and payable at
its stated maturity, upon any required repurchase, upon declaration of acceleration or otherwise; 
 (c) failure by the Company to comply
with its obligation to convert the Notes in accordance with this Indenture upon exercise of a Holder’s conversion right, and such failure continues for a period of three Business Days; 

(d) failure by the Company to issue a Fundamental Change Company Notice in accordance with Section 15.02(c) or notice of a specified corporate
event in accordance with Section 14.01(b)(ii) or 14.01(b)(iii), in each case when due; 
 (e) failure by the Company to comply with its
obligations under Article 11; 
 (f) failure by the Company for 60 days after written notice from the Trustee or the Holders of at least 25%
in principal amount of the Notes then outstanding has been received by the Company to comply with any of its other agreements contained in the Notes or this Indenture; 

  
 30 

 (g) default by the Company or any Subsidiary of the Company with respect to any mortgage,
agreement or other instrument under which there may be outstanding, or by which there may be secured or evidenced, any indebtedness for money borrowed in excess of $5,000,000 (or its foreign currency equivalent) in the aggregate of the Company
and/or any such Subsidiary, whether such indebtedness now exists or shall hereafter be created (i) constituting a failure to pay the principal or interest of any such indebtedness when due and payable at its stated maturity, upon required
repurchase, upon declaration of acceleration or otherwise or (ii) resulting in such indebtedness becoming or being declared due and payable if such acceleration is not rescinded within 30 days after notice to the Company by the Trustee or to
Company and Trustee by the Holders of at least 25% in aggregate principal amount of Notes then outstanding determined in accordance with this Indenture; 

(h) a final judgment for the payment of $5,000,000 (or its foreign currency equivalent) or more (excluding any amounts covered by insurance)
rendered against the Company or any Subsidiary of the Company, which judgment is not discharged or stayed within 60 days after (i) the date on which the right to appeal thereof has expired if no such appeal has commenced, or (ii) the date
on which all rights to appeal have been extinguished; 
 (i) the Company or any Significant Subsidiary shall commence a voluntary case or
other proceeding seeking liquidation, reorganization or other relief with respect to the Company or any such Significant Subsidiary or its debts under any bankruptcy, insolvency or other similar law now or hereafter in effect or seeking the
appointment of a trustee, receiver, liquidator, custodian or other similar official of the Company or any such Significant Subsidiary or any substantial part of its property, or shall consent to any such relief or to the appointment of or taking
possession by any such official in an involuntary case or other proceeding commenced against it, or shall make a general assignment for the benefit of creditors; or 

(j) an involuntary case or other proceeding shall be commenced against the Company or any Significant Subsidiary seeking liquidation,
reorganization or other relief with respect to the Company or such Significant Subsidiary or its debts under any bankruptcy, insolvency or other similar law now or hereafter in effect or seeking the appointment of a trustee, receiver, liquidator,
custodian or other similar official of the Company or such Significant Subsidiary or any substantial part of its property, and such involuntary case or other proceeding shall remain undismissed and unstayed for a period of 30 consecutive days. 

Section 6.02. Acceleration; Rescission and Annulment. If one or more Events of Default shall have occurred and be continuing
(whatever the reason for such Event of Default and whether it shall be voluntary or involuntary or be effected by operation of law or pursuant to any judgment, decree or order of any court or any order, rule or regulation of any administrative or
governmental body), then, and in each and every such case (other than an Event of Default specified in Section 6.01(i) or Section 6.01(j) with respect to the Company (and not solely with respect to any of its Significant Subsidiaries)),
unless the principal of all of the Notes shall have already become due and payable, either the Trustee or the Holders of at least 25% in aggregate principal amount of the Notes then outstanding determined in accordance with Section 8.04, by
notice in writing to the Company (and to the Trustee if given by Holders), may declare 100% of the principal of, and accrued and unpaid interest, if any, on all the Notes to be due and payable immediately, and upon any such declaration the same
shall become and shall automatically be 

  
 31 

 
immediately due and payable, anything contained in this Indenture or in the Notes to the contrary notwithstanding. If an Event of Default specified in Section 6.01(i) or Section 6.01(j)
with respect to the Company (and not solely with respect to any of its Significant Subsidiaries) occurs and is continuing, 100% of the principal of, and accrued and unpaid interest, if any, on, all Notes shall become and shall automatically be
immediately due and payable. 
 The immediately preceding paragraph, however, is subject to the conditions that if, at any time after the
principal of the Notes shall have been so declared due and payable, and before any judgment or decree for the payment of the monies due shall have been obtained or entered as hereinafter provided, the Company shall pay or shall deposit with the
Trustee a sum sufficient to pay installments of accrued and unpaid interest upon all Notes and the principal of any and all Notes that shall have become due otherwise than by acceleration (with interest on overdue installments of accrued and unpaid
interest to the extent that payment of such interest is enforceable under applicable law, and on such principal at the rate borne by the Notes at such time) and amounts due to the Trustee pursuant to Section 7.06, and if (1) rescission would
not conflict with any judgment or decree of a court of competent jurisdiction and (2) any and all existing Events of Default under this Indenture, other than the nonpayment of the principal of and accrued and unpaid interest, if any, on Notes
that shall have become due solely by such acceleration, shall have been cured or waived pursuant to Section 6.09, then and in every such case (except as provided in the immediately succeeding sentence) the Holders of a majority in aggregate
principal amount of the Notes then outstanding, by written notice to the Company and to the Trustee, may waive all Defaults or Events of Default with respect to the Notes and rescind and annul such declaration and its consequences and such Default
shall cease to exist, and any Event of Default arising therefrom shall be deemed to have been cured for every purpose of this Indenture; but no such waiver or rescission and annulment shall extend to or shall affect any subsequent Default or Event
of Default, or shall impair any right consequent thereon. Notwithstanding anything to the contrary herein, no such waiver or rescission and annulment shall extend to or shall affect any Default or Event of Default resulting from (i) the
nonpayment of the principal (including the Fundamental Change Repurchase Price, if applicable) of, or accrued and unpaid interest on, any Notes, (ii) a failure to repurchase any Notes when required or (iii) a failure to pay or deliver, as
the case may be, the consideration due upon conversion of the Notes. 
 Section 6.03. Additional Interest. Notwithstanding
anything in this Indenture or in the Notes to the contrary, to the extent the Company elects, the sole remedy for an Event of Default relating to the Company’s failure to comply with its obligations as set forth in Section 4.06(b) shall, for
the first 270 days after the occurrence of such an Event of Default (which, for the avoidance of doubt, shall not commence until the notice described in Section 6.01(f) above has been given, and the related 60-day period described in Section 6.01(f)
has passed), consist exclusively of the right to receive Additional Interest on the Notes at a rate equal to (i) 0.25% per annum of the principal amount of the Notes outstanding for each day during the first 90 calendar days after the
occurrence of such an Event of Default during which such Event of Default is continuing (or, if earlier, the date on which such Event of Default is cured or waived as provided for in this Indenture) and (ii) 0.50% per annum of the
principal amount of the Notes outstanding for each day from, and including, the 91st calendar day to, but excluding, the 270th calendar day after the occurrence of such an Event of Default during which such Event of Default is

  
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continuing (or, if earlier, the date on which such Event of Default is cured or waived as provided for in this Indenture). Additional Interest payable pursuant to this Section 6.03 shall be in
addition to, not in lieu of, any Additional Interest payable pursuant to Section 4.06(d) or Section 4.06(e). If the Company so elects, Additional Interest shall be payable as set forth in Section 2.03(b). On the 271st day after such Event of
Default (if the Event of Default relating to the Company’s failure to comply with its obligations as set forth in Section 4.06(b) is not cured or waived prior to such 271st day), the Notes shall be immediately subject to acceleration as
provided in Section 6.02. In the event the Company does not elect to pay Additional Interest following an Event of Default in accordance with this Section 6.03 or the Company elected to make such payment but does not pay the Additional Interest
when due, the Notes shall be immediately subject to acceleration as provided in Section 6.02. 
 In order to elect to pay
Additional Interest as the sole remedy during the first 270 days after the occurrence of any Event of Default described in the immediately preceding paragraph, the Company must notify all Holders of the Notes, the Trustee and the Paying Agent of
such election prior to the beginning of such 270-day period (which, for the avoidance of doubt, shall not commence until the notice described in Section 6.01(f) above has been given, and the related 60-day period described in Section 6.01(f) has
passed). Upon the failure to timely give such notice, the Notes shall be immediately subject to acceleration as provided in Section 6.02. 

In no event shall Additional Interest accrue under the terms of this Indenture (aggregating any Additional Interest payable pursuant to this
Section 6.03 with any Additional Interest payable pursuant to Section 4.06(d) or Section 4.06(e)) at a rate per year in excess of 0.50%, regardless of the number of events or circumstances giving rise to the requirement to pay such Additional
Interest. 
 Section 6.04. Payments of Notes on Default; Suit Therefor. If an Event of Default described in clause (a) or (b) of
Section 6.01 shall have occurred, the Company shall, upon demand of the Trustee, pay to the Trustee, for the benefit of the Holders of the Notes, the whole amount then due and payable on the Notes for principal and interest, if any, with interest on
any overdue principal and interest, if any, at the rate borne by the Notes at such time, and, in addition thereto, such further amount as shall be sufficient to cover any amounts due to the Trustee under Section 7.06. If the Company shall fail to
pay such amounts forthwith upon such demand, the Trustee, in its own name and as trustee of an express trust, may institute a judicial proceeding for the collection of the sums so due and unpaid, may prosecute such proceeding to judgment or final
decree and may enforce the same against the Company or any other obligor upon the Notes and collect the moneys adjudged or decreed to be payable in the manner provided by law out of the property of the Company or any other obligor upon the Notes,
wherever situated. 
 In the event there shall be pending proceedings for the bankruptcy or for the reorganization of the Company or any
other obligor on the Notes under Title 11 of the United States Code, or any other applicable law, or in case a receiver, assignee or trustee in bankruptcy or reorganization, liquidator, sequestrator or similar official shall have been appointed for
or taken possession of the Company or such other obligor, the property of the Company or such other obligor, or in the event of any other judicial proceedings relative to the Company or such other obligor upon the Notes, or to the creditors or
property of the Company or such other obligor, the Trustee, irrespective of whether the principal of the Notes shall then be due and 

  
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payable as therein expressed or by declaration or otherwise and irrespective of whether the Trustee shall have made any demand pursuant to the provisions of this Section 6.04, shall be entitled
and empowered, by intervention in such proceedings or otherwise, to file and prove a claim or claims for the whole amount of principal and accrued and unpaid interest, if any, in respect of the Notes, and, in case of any judicial proceedings, to
file such proofs of claim and other papers or documents and to take such other actions as it may deem necessary or advisable in order to have the claims of the Trustee (including any claim for the reasonable compensation, expenses, disbursements and
advances of the Trustee, its agents and counsel) and of the Holders allowed in such judicial proceedings relative to the Company or any other obligor on the Notes, its or their creditors, or its or their property, and to collect and receive any
monies or other property payable or deliverable on any such claims, and to distribute the same after the deduction of any amounts due to the Trustee under Section 7.06; and any receiver, assignee or trustee in bankruptcy or reorganization,
liquidator, custodian or similar official is hereby authorized by each of the Holders to make such payments to the Trustee, as administrative expenses, and, in the event that the Trustee shall consent to the making of such payments directly to the
Holders, to pay to the Trustee any amount due it for reasonable compensation, expenses, advances and disbursements, including agents and counsel fees, and including any other amounts due to the Trustee under Section 7.06, incurred by it up to the
date of such distribution. To the extent that such payment of reasonable compensation, expenses, advances and disbursements out of the estate in any such proceedings shall be denied for any reason, payment of the same shall be secured by a lien on,
and shall be paid out of, any and all distributions, dividends, monies, securities and other property that the Holders of the Notes may be entitled to receive in such proceedings, whether in liquidation or under any plan of reorganization or
arrangement or otherwise. 
 Nothing herein contained shall be deemed to authorize the Trustee to authorize or consent to or accept or adopt
on behalf of any Holder any plan of reorganization, arrangement, adjustment or composition affecting such Holder or the rights of any Holder thereof, or to authorize the Trustee to vote in respect of the claim of any Holder in any such proceeding.

 All rights of action and of asserting claims under this Indenture, or under any of the Notes, may be enforced by the Trustee without the
possession of any of the Notes, or the production thereof at any trial or other proceeding relative thereto, and any such suit or proceeding instituted by the Trustee shall be brought in its own name as trustee of an express trust, and any recovery
of judgment shall, after provision for the payment of the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel, be for the ratable benefit of the Holders of the Notes. 

In any proceedings brought by the Trustee (and in any proceedings involving the interpretation of any provision of this Indenture to which the
Trustee shall be a party) the Trustee shall be held to represent all the Holders of the Notes, and it shall not be necessary to make any Holders of the Notes parties to any such proceedings. 

In case the Trustee shall have proceeded to enforce any right under this Indenture and such proceedings shall have been discontinued or
abandoned because of any waiver pursuant to Section 6.09 or any rescission and annulment pursuant to Section 6.02 or for any other reason or shall have been determined adversely to the Trustee, then and in every such case the Company,

  
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the Holders and the Trustee shall, subject to any determination in such proceeding, be restored respectively to their several positions and rights hereunder, and all rights, remedies and powers
of the Company, the Holders and the Trustee shall continue as though no such proceeding had been instituted. 
 Section 6.05.
Application of Monies Collected by Trustee. Any monies collected by the Trustee pursuant to this Article 6 with respect to the Notes shall be applied in the following order, at the date or dates fixed by the Trustee for the distribution of such
monies, upon presentation of the several Notes, and stamping thereon the payment, if only partially paid, and upon surrender thereof, if fully paid: 

First, to the payment of all amounts due the Trustee under Section 7.06; 

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

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

Section 6.06. Proceedings by Holders. Except to enforce the right to receive payment of principal (including, if applicable, the
Fundamental Change Repurchase Price) or interest when due, or the right to receive payment or delivery of the consideration due upon conversion, no Holder of any Note may pursue any remedy with respect to this Indenture or the Notes, unless: 

(a) such Holder previously shall have given to the Trustee written notice that an Event of Default is continuing; 

(b) Holders of at least 25% in aggregate principal amount of the Notes then outstanding shall have made written request upon the Trustee to
pursue the remedy; 

  
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 (c) such Holders shall have offered to the Trustee such security or indemnity reasonably
satisfactory to it against any loss, liability or expense; 
 (d) the Trustee has not complied with such request for 60 days after its
receipt of the request and the offer of security or indemnity; and 
 (e) the Holders of a majority of the aggregate principal amount of the
then outstanding Notes have not given the Trustee a direction that, in the opinion of the Trustee, is inconsistent with such request within such 60-day period pursuant to Section 6.09, 

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

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

  
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may be exercised from time to time, and as often as shall be deemed expedient, by the Trustee or by the Holders. 

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

Section 6.10. Notice of Defaults. The Trustee shall, within 90 days after a Responsible Officer has actual knowledge of the
occurrence and continuance of a Default, give to all Holders as the names and addresses of such Holders appear upon the Note Register, notice of all Defaults known to a Responsible Officer, unless such Defaults shall have been cured or waived before
the giving of such notice; provided that, except in the case of a Default in the payment of the principal of (including the Fundamental Change Repurchase Price, if applicable), or accrued and unpaid interest on, any of the Notes or a Default
in the payment or delivery of the consideration due upon conversion, the Trustee shall be protected in withholding such notice if and so long as the Trustee in good faith determines that the withholding of such notice is in the interests of the
Holders. 
 Section 6.11. Undertaking to Pay Costs. All parties to this Indenture agree, and each Holder of any Note by its
acceptance thereof shall be deemed to have agreed, that any court may, in its discretion, require, in any suit for the enforcement of any right or remedy under this Indenture, or in any suit against the Trustee for any action taken or omitted by it
as Trustee, the filing by any party litigant in such suit of an undertaking to pay the costs of such suit and that such court may in its discretion assess reasonable costs, including reasonable attorneys’ fees and expenses, against any party
litigant in such suit, having due regard to the merits and good faith of 

  
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the claims or defenses made by such party litigant; provided that the provisions of this Section 6.11 (to the extent permitted by law) shall not apply to any suit instituted by the
Trustee, to any suit instituted by any Holder, or group of Holders, holding in the aggregate more than 10% in principal amount of the Notes at the time outstanding determined in accordance with Section 8.04, or to any suit instituted by any Holder
for the enforcement of the payment of the principal of or accrued and unpaid interest, if any, on any Note (including, but not limited to, the Fundamental Change Repurchase Price, if applicable) on or after the due date expressed or provided for in
such Note or to any suit for the enforcement of the right to convert any Note in accordance with the provisions of Article 14. 
 ARTICLE 7

 CONCERNING THE TRUSTEE 

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

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

  
 38 

 
not confirm or investigate the accuracy of any mathematical calculations or other facts stated therein); 

(b) the Trustee shall not be liable for any error of judgment made in good faith by a Responsible Officer or Officers of the Trustee, unless
it shall be proved that the Trustee was grossly negligent in ascertaining the pertinent facts; 
 (c) the Trustee shall not be liable with
respect to any action taken or omitted to be taken by it in good faith in accordance with the direction of the Holders of not less than a majority of the aggregate principal amount of the Notes at the time outstanding determined as provided in
Section 8.04 relating to the time, method and place of conducting any proceeding for any remedy available to the Trustee, or exercising any trust or power conferred upon the Trustee, under this Indenture; 

(d) whether or not therein provided, every provision of this Indenture relating to the conduct or affecting the liability of, or affording
protection to, the Trustee shall be subject to the provisions of this Section; 
 (e) the Trustee shall not be liable in respect of any
payment (as to the correctness of amount, entitlement to receive or any other matters relating to payment) or notice effected by the Company or any Paying Agent or any records maintained by any co-Note Registrar with respect to the Notes; 

(f) if any party fails to deliver a notice relating to an event the fact of which, pursuant to this Indenture, requires notice to be sent to
the Trustee, the Trustee may conclusively rely on its failure to receive such notice as reason to act as if no such event occurred, unless a Responsible Officer of the Trustee had actual knowledge of such event; 

(g) in the absence of written investment direction from the Company, all cash received by the Trustee shall be placed in a non-interest
bearing trust account, and in no event shall the Trustee be liable for the selection of investments or for investment losses incurred thereon or for losses incurred as a result of the liquidation of any such investment prior to its maturity date or
the failure of the party directing such investments prior to its maturity date or the failure of the party directing such investment to provide timely written investment direction, and the Trustee shall have no obligation to invest or reinvest any
amounts held hereunder in the absence of such written investment direction from the Company; and 
 (h) in the event that the Trustee is
also acting as Custodian, Note Registrar, Paying Agent, Conversion Agent, Bid Solicitation Agent or transfer agent hereunder, the rights and protections afforded to the Trustee pursuant to this Article 7 shall also be afforded to such Custodian,
Note Registrar, Paying Agent, Conversion Agent, Bid Solicitation Agent or transfer agent. 
 None of the provisions contained in this
Indenture shall require the Trustee to expend or risk its own funds or otherwise incur personal financial liability in the performance of any of its duties or in the exercise of any of its rights or powers. 

  
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 Section 7.02. Reliance on Documents, Opinions, Etc. Except as otherwise provided in
Section 7.01: 
 (a) the Trustee may conclusively rely and shall be fully protected in acting upon any resolution, certificate, statement,
instrument, opinion, report, notice, request, consent, order, bond, note, coupon or other paper or document believed by it in good faith to be genuine and to have been signed or presented by the proper party or parties; 

(b) any request, direction, order or demand of the Company mentioned herein shall be sufficiently evidenced by an Officer’s Certificate
(unless other evidence in respect thereof be herein specifically prescribed); and any Board Resolution may be evidenced to the Trustee by a copy thereof certified by the Secretary or an Assistant Secretary of the Company; 

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

(d) the Trustee shall not be bound to make any investigation into the facts or matters stated in any resolution, certificate, statement,
instrument, opinion, report, notice, request, direction, consent, order, bond, debenture or other paper or document, but the Trustee, in its discretion, may make such further inquiry or investigation into such facts or matters as it may see fit,
and, if the Trustee shall determine to make such further inquiry or investigation, it shall be entitled to examine the books, records and premises of the Company, personally or by agent or attorney at the expense of the Company and shall incur no
liability of any kind by reason of such inquiry or investigation; 
 (e) the Trustee may execute any of the trusts or powers hereunder or
perform any duties hereunder either directly or by or through agents, custodians, nominees or attorneys and the Trustee shall not be responsible for any misconduct or negligence on the part of any agent, custodian, nominee or attorney appointed by
it with due care hereunder; and 
 (f) the permissive rights of the Trustee enumerated herein shall not be construed as duties. 

Except with respect to Section 4.01, the Trustee shall have no duty to inquire as to, ascertain compliance with, or make any calculations
relating to the performance of the Company with respect to the covenants or obligations contained in Article 4, Article 5, Article 14 or Article 15 hereof. In no event shall the Trustee be liable for any consequential loss or damage of any kind
whatsoever (including but not limited to lost profits), even if the Trustee has been advised of the likelihood of such loss or damage and regardless of the form of action other than any such loss or damage caused by the Trustee’s willful
misconduct or gross negligence. The Trustee shall not be charged with knowledge of any Default or Event of Default with respect to the Notes, unless either (1) a Responsible Officer shall have actual knowledge of such Default or Event of
Default or (2) written notice of such Default or Event of Default shall have been given to the Trustee by the Company or by any Holder of the Notes. 

  
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 Section 7.03. No Responsibility for Recitals, Etc. The recitals contained herein and
in the Notes (except in the Trustee’s certificate of authentication) shall be taken as the statements of the Company, and the Trustee assumes no responsibility for the correctness of the same. The Trustee makes no representations as to the
validity or sufficiency of this Indenture or of the Notes. The Trustee shall not be accountable for the use or application by the Company of any Notes or the proceeds of any Notes authenticated and delivered by the Trustee in conformity with the
provisions of this Indenture. 
 Section 7.04. Trustee, Paying Agents, Conversion Agents, Bid Solicitation Agent or Note Registrar
May Own Notes. The Trustee, any Paying Agent, any Conversion Agent, Bid Solicitation Agent (if other than the Company) or Note Registrar, in its individual or any other capacity, may become the owner or pledgee of Notes with the same rights it
would have if it were not the Trustee, Paying Agent, Conversion Agent, Bid Solicitation Agent or Note Registrar. 
 Section 7.05.
Monies and Shares of Common Stock to Be Held in Trust. All monies and shares of Common Stock received by the Trustee shall, until used or applied as herein provided, be held in trust for the purposes for which they were received. Money and
shares of Common Stock held by the Trustee in trust hereunder need not be segregated from other funds except to the extent required by law. The Trustee shall be under no liability for interest on any money or shares of Common Stock received by it
hereunder except as may be agreed from time to time by the Company and the Trustee. 
 Section 7.06. Compensation and Expenses of
Trustee. The Company covenants and agrees to pay to the Trustee from time to time, and the Trustee shall be entitled to, reasonable compensation for all services rendered by it hereunder in any capacity (which shall not be limited by any
provision of law in regard to the compensation of a trustee of an express trust) as mutually agreed to in writing between the Trustee and the Company, and the Company will pay or reimburse the Trustee upon its request for all reasonable expenses,
disbursements and advances reasonably incurred or made by the Trustee in accordance with any of the provisions of this Indenture in any capacity thereunder (including the reasonable compensation and the expenses and disbursements of its agents and
counsel and of all Persons not regularly in its employ) except any such expense, disbursement or advance as shall have been caused by its gross negligence, willful misconduct or bad faith. The Company also covenants to indemnify the Trustee in any
capacity under this Indenture and any other document or transaction entered into in connection herewith and its agents and any authenticating agent for, and to hold them harmless against, any loss, claim, damage, liability or expense incurred
without gross negligence, willful misconduct or bad faith on the part of the Trustee, its officers, directors, agents or employees, or such agent or authenticating agent, as the case may be, and arising out of or in connection with the acceptance or
administration of this Indenture or in any other capacity hereunder, including the costs and expenses of defending themselves against any claim of liability in the premises. The obligations of the Company under this Section 7.06 to compensate
or indemnify the Trustee and to pay or reimburse the Trustee for expenses, disbursements and advances shall be secured by a senior claim to which the Notes are hereby made subordinate on all money or property held or collected by the Trustee,
except, subject to the effect of Section 6.05, funds held in trust herewith for the benefit of the Holders of particular Notes. The Trustee’s right to receive payment of any amounts due under this Section 7.06 shall not be subordinate to any
other liability or indebtedness of the Company. The obligation of the 

  
 41 

 
Company under this Section 7.06 shall survive the satisfaction and discharge of this Indenture and the earlier resignation or removal or the Trustee. The Company need not pay for any settlement
made without its consent, which consent shall not be unreasonably withheld. The indemnification provided in this Section 7.06 shall extend to the officers, directors, agents and employees of the Trustee. 

Without prejudice to any other rights available to the Trustee under applicable law, when the Trustee and its agents and any authenticating
agent incur expenses or render services after an Event of Default specified in Section 6.01(i) or Section 6.01(j) occurs, the expenses and the compensation for the services are intended to constitute expenses of administration under any bankruptcy,
insolvency or similar laws. 
 Section 7.07. Officer’s Certificate as Evidence. Except as otherwise provided in Section
7.01, whenever in the administration of the provisions of this Indenture the Trustee shall deem it necessary or desirable that a matter be proved or established prior to taking or omitting any action hereunder, such matter (unless other evidence in
respect thereof be herein specifically prescribed) may, in the absence of gross negligence, willful misconduct, recklessness and bad faith on the part of the Trustee, be deemed to be conclusively proved and established by an Officer’s
Certificate delivered to the Trustee, and such Officer’s Certificate, in the absence of gross negligence, willful misconduct, recklessness and bad faith on the part of the Trustee, shall be full warrant to the Trustee for any action taken or
omitted by it under the provisions of this Indenture upon the faith thereof. 
 Section 7.08. Eligibility of Trustee. There
shall at all times be a Trustee hereunder which shall be a Person that is eligible pursuant to the Trust Indenture Act to act as such and has a combined capital and surplus of at least $50,000,000. If such Person publishes reports of condition at
least annually, pursuant to law or to the requirements of any supervising or examining authority, then for the purposes of this Section, the combined capital and surplus of such Person shall be deemed to be its combined capital and surplus as set
forth in its most recent report of condition so published. If at any time the Trustee shall cease to be eligible in accordance with the provisions of this Section, it shall resign immediately in the manner and with the effect hereinafter specified
in this Article. 
 Section 7.09. Resignation or Removal of Trustee. (a) The Trustee may at any time resign by giving
written notice of such resignation to the Company and by giving notice thereof to the Holders. Upon receiving such notice of resignation, the Company shall promptly appoint a successor trustee by written instrument, in duplicate, executed by order
of the Board of Directors, one copy of which instrument shall be delivered to the resigning Trustee and one copy to the successor trustee. If no successor trustee shall have been so appointed and have accepted appointment within 60 days after the
giving of such notice of resignation to the Holders, the resigning Trustee may, upon ten Business Days’ notice to the Company and the Holders, petition any court of competent jurisdiction for the appointment of a successor trustee, or any
Holder who has been a bona fide holder of a Note or Notes for at least six months may, subject to the provisions of Section 6.11, on behalf of himself or herself and all others similarly situated, petition any such court for the appointment of
a successor trustee. Such court may thereupon, after such notice, if any, as it may deem proper and prescribe, appoint a successor trustee. 

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

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

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

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

  
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funds held in trust for the benefit of Holders of particular Notes, to secure any amounts then due it pursuant to the provisions of Section 7.06. 

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

Section 7.11. Succession by Merger, Etc. Any corporation or other entity into which the Trustee may be merged or converted or with
which it may be consolidated, or any corporation or other entity resulting from any merger, conversion or consolidation to which the Trustee shall be a party, or any corporation or other entity succeeding to all or substantially all of the corporate
trust business of the Trustee (including the administration of this Indenture), shall be the successor to the Trustee hereunder without the execution or filing of any paper or any further act on the part of any of the parties hereto; provided
that in the case of any corporation or other entity succeeding to all or substantially all of the corporate trust business of the Trustee such corporation or other entity shall be eligible under the provisions of Section 7.08. 

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

Section 7.12. Trustee’s Application for Instructions from the Company. Any application by the Trustee for written
instructions from the Company (other than with regard to any action proposed to be taken or omitted to be taken by the Trustee that affects the rights of the Holders of the Notes under this Indenture) may, at the option of the Trustee, set forth in
writing any action proposed to be taken or omitted by the Trustee under this Indenture and the date on and/or after which such action shall be taken or such omission shall be effective. The Trustee shall not be liable for any action taken by, or
omission of, the Trustee in accordance with a proposal included in such application on or after the date specified in such application (which date shall not be less than three Business Days after the date any officer that the Company has indicated
to the Trustee should receive such application actually receives such application, unless any such 

  
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officer shall have consented in writing to any earlier date), unless, prior to taking any such action (or the effective date in the case of any omission), the Trustee shall have received written
instructions in accordance with this Indenture in response to such application specifying the action to be taken or omitted. 
 ARTICLE 8

 CONCERNING THE HOLDERS 

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

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

Section 8.03. Who Are Deemed Absolute Owners. The Company, the Trustee, any authenticating agent, any Paying Agent, any Conversion
Agent and any Note Registrar may deem the Person in whose name a Note shall be registered upon the Note Register to be, and may treat it as, the absolute owner of such Note (whether or not such Note shall be overdue and notwithstanding any notation
of ownership or other writing thereon made by any Person other than the Company or any Note Registrar) for the purpose of receiving payment of or on account of the principal of and (subject to Section 2.03) any accrued and unpaid interest on such
Note, for conversion of such Note and for all other purposes; and neither the Company nor the Trustee nor any Paying Agent nor any Conversion Agent nor any Note Registrar shall be affected by any notice to the contrary. All such payments or
deliveries so made to any Holder for the time being, or upon its order, shall be valid, and, to the extent of the sums or shares of Common Stock so paid or delivered, effectual to satisfy and discharge the liability for monies payable or shares
deliverable upon any such Note. Notwithstanding anything to the contrary in this Indenture or the Notes following an Event of Default, any Holder of a beneficial interest in a Global Note 

  
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may directly enforce against the Company, without the consent, solicitation, proxy, authorization or any other action of the Depositary or any other Person, such Holder’s right to exchange
such beneficial interest for a Note in certificated form in accordance with the provisions of this Indenture. 
 Section 8.04.
Company-Owned Notes Disregarded. In determining whether the Holders of the requisite aggregate principal amount of Notes have concurred in any direction, consent, waiver or other action under this Indenture, Notes that are owned by the Company,
by any Subsidiary thereof or by any Person directly or indirectly controlling or controlled by or under direct or indirect common control with the Company or any Subsidiary thereof shall be disregarded and deemed not to be outstanding for the
purpose of any such determination; provided that for the purposes of determining whether the Trustee shall be protected in relying on any such direction, consent, waiver or other action only Notes that a Responsible Officer knows are so owned
shall be so disregarded. Notes so owned that have been pledged in good faith may be regarded as outstanding for the purposes of this Section 8.04 if the pledgee shall establish to the satisfaction of the Trustee the pledgee’s right to so act
with respect to such Notes and that the pledgee is not the Company, a Subsidiary thereof or a Person directly or indirectly controlling or controlled by or under direct or indirect common control with the Company or a Subsidiary thereof. In the case
of a dispute as to such right, any decision by the Trustee taken upon the advice of counsel shall be full protection to the Trustee. Upon request of the Trustee, the Company shall furnish to the Trustee promptly an Officer’s Certificate listing
and identifying all Notes, if any, known by the Company to be owned or held by or for the account of any of the above described Persons; and, subject to Section 7.01, the Trustee shall be entitled to accept such Officer’s Certificate as
conclusive evidence of the facts therein set forth and of the fact that all Notes not listed therein are outstanding for the purpose of any such determination. 

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

ARTICLE 9 

HOLDERS’ MEETINGS 

Section 9.01. Purpose of Meetings. A meeting of Holders may be called at any time and from time to time pursuant to the provisions
of this Article 9 for any of the following purposes: 

  
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 (a) to give any notice to the Company or to the Trustee or to give any directions to the Trustee
permitted under this Indenture, or to consent to the waiving of any Default or Event of Default hereunder (in each case, as permitted under this Indenture) and its consequences, or to take any other action authorized to be taken by Holders pursuant
to any of the provisions of Article 6; 
 (b) to remove the Trustee and nominate a successor trustee pursuant to the provisions of Article
7; 
 (c) to consent to the execution of an indenture or indentures supplemental hereto pursuant to the provisions of Section 10.02; or 

(d) to take any other action authorized to be taken by or on behalf of the Holders of any specified aggregate principal amount of the Notes
under any other provision of this Indenture or under applicable law. 
 Section 9.02. Call of Meetings by Trustee. The Trustee
may at any time call a meeting of Holders to take any action specified in Section 9.01, to be held at such time and at such place as the Trustee shall determine. Notice of every meeting of the Holders, setting forth the time and the place of
such meeting and in general terms the action proposed to be taken at such meeting and the establishment of any record date pursuant to Section 8.01, shall be given to Holders of such Notes. Such notice shall also be given to the Company. Such
notices shall be given not less than 20 nor more than 90 days prior to the date fixed for the meeting. 
 Any meeting of Holders shall be
valid without notice if the Holders of all Notes then outstanding are present in person or by proxy or if notice is waived before or after the meeting by the Holders of all Notes then outstanding, and if the Company and the Trustee are either
present by duly authorized representatives or have, before or after the meeting, waived notice. 
 Section 9.03. Call of Meetings by
Company or Holders. In case at any time the Company, pursuant to a Board Resolution, or the Holders of at least 10% of the aggregate principal amount of the Notes then outstanding, shall have requested the Trustee to call a meeting of Holders,
by written request setting forth in reasonable detail the action proposed to be taken at the meeting, and the Trustee shall not have given the notice of such meeting within 20 days after receipt of such request, then the Company or such Holders may
determine the time and the place for such meeting and may call such meeting to take any action authorized in Section 9.01, by giving notice thereof as provided in Section 9.02. 

Section 9.04. Qualifications for Voting. To be entitled to vote at any meeting of Holders a Person shall (a) be a Holder of
one or more Notes on the record date pertaining to such meeting or (b) be a Person appointed by an instrument in writing as proxy by a Holder of one or more Notes on the record date pertaining to such meeting. The only Persons who shall be
entitled to be present or to speak at any meeting of Holders shall be the Persons entitled to vote at such meeting and their counsel and any representatives of the Trustee and its counsel and any representatives of the Company and its counsel. 

  
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 Section 9.05. Regulations. Notwithstanding any other provisions of this Indenture,
the Trustee may make such reasonable regulations as it may deem advisable for any meeting of Holders, in regard to proof of the holding of Notes and of the appointment of proxies, and in regard to the appointment and duties of inspectors of votes,
the submission and examination of proxies, certificates and other evidence of the right to vote, and such other matters concerning the conduct of the meeting as it shall think fit. 

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

Subject to the provisions of Section 8.04, at any meeting of Holders each Holder or proxyholder shall be entitled to one vote for each $1,000
principal amount of Notes held or represented by him or her; provided, however, that no vote shall be cast or counted at any meeting in respect of any Note challenged as not outstanding and ruled by the chairman of the meeting to be
not outstanding. The chairman of the meeting shall have no right to vote other than by virtue of Notes held by it or instruments in writing as aforesaid duly designating it as the proxy to vote on behalf of other Holders. Any meeting of Holders duly
called pursuant to the provisions of Section 9.02 or Section 9.03 may be adjourned from time to time by the Holders of a majority of the aggregate principal amount of Notes represented at the meeting, whether or not constituting a quorum, and the
meeting may be held as so adjourned without further notice. 
 Section 9.06. Voting. The vote upon any resolution submitted to
any meeting of Holders shall be by written ballot on which shall be subscribed the signatures of the Holders or of their representatives by proxy and the outstanding aggregate principal amount of the Notes held or represented by them. The permanent
chairman of the meeting shall appoint two inspectors of votes who shall count all votes cast at the meeting for or against any resolution and who shall make and file with the secretary of the meeting their verified written reports in duplicate of
all votes cast at the meeting. A record in duplicate of the proceedings of each meeting of Holders shall be prepared by the secretary of the meeting and there shall be attached to said record the original reports of the inspectors of votes on any
vote by ballot taken thereat and affidavits by one or more Persons having knowledge of the facts setting forth a copy of the notice of the meeting and showing that said notice was given as provided in Section 9.02. The record shall show the
aggregate principal amount of the Notes voting in favor of or against any resolution. The record shall be signed and verified by the affidavits of the permanent chairman and secretary of the meeting and one of the duplicates shall be delivered to
the Company and the other to the Trustee to be preserved by the Trustee, the latter to have attached thereto the ballots voted at the meeting. 

Any record so signed and verified shall be conclusive evidence of the matters therein stated. 

Section 9.07. No Delay of Rights by Meeting. Nothing contained in this Article 9 shall be deemed or construed to authorize or
permit, by reason of any call of a meeting of Holders or 

  
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any rights expressly or impliedly conferred hereunder to make such call, any hindrance or delay in the exercise of any right or rights conferred upon or reserved to the Trustee or to the Holders
under any of the provisions of this Indenture or of the Notes. 
 ARTICLE 10 

SUPPLEMENTAL INDENTURES 

Section 10.01. Supplemental Indentures Without Consent of Holders. The Company, when authorized by the resolutions of the Board of
Directors and the Trustee, at the Company’s expense, may from time to time and at any time enter into an indenture or indentures supplemental hereto for one or more of the following purposes: 

(a) to cure any ambiguity, omission, defect or inconsistency, provided that such modification or amendment does not, in the good faith
opinion of the Board of Directors, adversely affect the interests of Holders of the applicable Notes in any material respect; 
 (b) to
provide for the assumption by a Successor Company of the obligations of the Company under this Indenture pursuant to Article 11; 
 (c) to
add guarantees with respect to the Notes; 
 (d) to secure the Notes; 

(e) to add to the covenants or Events of Default of the Company for the benefit of the Holders or surrender any right or power conferred upon
the Company; 
 (f) to make any change that does not adversely affect the rights of any Holder; 

(g) in connection with any Merger Event, provide that the notes are convertible into Reference Property, subject to the provisions of Section
14.02, and make such related changes to the terms of the Notes to the extent expressly required by Section 14.07; or 
 (h) to conform the
provisions of this Indenture or the Notes to any provision of the “Description of notes” section of the Private Placement Memorandum. 

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

Section 10.02. Supplemental Indentures with Consent of Holders. With the consent (evidenced as provided in Article 8) of the
Holders of at least a majority of the aggregate 

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

(c) reduce the principal of or extend the Maturity Date of any Note; 

(d) make any change that adversely affects the conversion rights of any Notes; 

(e) reduce the Fundamental Change Repurchase Price of any Note or amend or modify in any manner adverse to the Holders the Company’s
obligation to make such payments, whether through an amendment or waiver of provisions in the covenants, definitions or otherwise; 
 (f)
make any Note payable in a currency, or at a place of payment, other than that stated in the Note; 
 (g) change the ranking of the Notes;

 (h) impair the right of any Holder to receive payment of principal (including the Fundamental Change Repurchase Price, if applicable) and
interest on such Holder’s Notes on or after the due dates therefor or to institute suit for the enforcement of any payment on or with respect to such Holder’s Notes; or 

(i) make any change in this Article 10 that requires each Holder’s consent or in the waiver provisions in Section 6.02 or Section 6.09.

 Upon the written request of the Company, and upon the filing with the Trustee of evidence of the consent of Holders as aforesaid and
subject to Section 10.05, the Trustee shall join with the Company in the execution of such supplemental indenture unless such supplemental indenture affects the Trustee’s own rights, duties or immunities under this Indenture or otherwise, in
which case the Trustee may in its discretion, but shall not be obligated to, enter into such supplemental indenture. 
 Holders do not need
under this Section 10.02 to approve the particular form of any proposed supplemental indenture. It shall be sufficient if such Holders approve the substance thereof. After any such supplemental indenture becomes effective, the Company shall give
notice to the Holders briefly describing such supplemental indenture. However, the failure to give such notice to all the Holders, or any defect in the notice, will not impair or affect the validity of the supplemental indenture. 

  
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 Section 10.03. Effect of Supplemental Indentures. Upon the execution of any
supplemental indenture pursuant to the provisions of this Article 10, this Indenture shall be and be deemed to be modified and amended in accordance therewith and the respective rights, limitation of rights, obligations, duties and immunities under
this Indenture of the Trustee, the Company and the Holders shall thereafter be determined, exercised and enforced hereunder subject in all respects to such modifications and amendments and all the terms and conditions of any such supplemental
indenture shall be and be deemed to be part of the terms and conditions of this Indenture for any and all purposes. 

Section 10.04. Notation on Notes. Notes authenticated and delivered after the execution of any supplemental indenture pursuant to
the provisions of this Article 10 may, at the Company’s expense, bear a notation in form approved by the Trustee as to any matter provided for in such supplemental indenture. If the Company or the Trustee shall so determine, new Notes so
modified as to conform, in the opinion of the Trustee and the Board of Directors, to any modification of this Indenture contained in any such supplemental indenture may, at the Company’s expense, be prepared and executed by the Company,
authenticated by the Trustee (or an authenticating agent duly appointed by the Trustee pursuant to Section 17.10) and delivered in exchange for the Notes then outstanding, upon surrender of such Notes then outstanding. 

Section 10.05. Evidence of Compliance of Supplemental Indenture to Be Furnished Trustee. In addition to the documents required by
Section 17.05, the Trustee shall receive an Officer’s Certificate and an Opinion of Counsel as conclusive evidence that any supplemental indenture executed pursuant hereto complies with the requirements of this Article 10 and is permitted or
authorized by this Indenture. 
 ARTICLE 11 

CONSOLIDATION, MERGER, SALE, CONVEYANCE AND LEASE 

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

(a) the resulting, surviving or transferee Person (the “Successor Company”), if not the Company, shall be a corporation
organized and existing under the laws of the United States of America, any State thereof or the District of Columbia, and the Successor Company (if not the Company) shall expressly assume, by supplemental indenture, all of the obligations of the
Company under the Notes and this Indenture; and 
 (b) immediately after giving effect to such transaction, no Default or Event of Default
shall have occurred and be continuing under this Indenture. 
 Section 11.02. Successor Corporation to Be Substituted. In case
of any such consolidation, merger, sale, conveyance, transfer or lease and upon the assumption by the Successor Company, by supplemental indenture, executed and delivered to the Trustee and satisfactory in form to the Trustee, of the due and
punctual payment of the principal of and 

  
 51 

 
accrued and unpaid interest on all of the Notes, the due and punctual delivery or payment, as the case may be, of any consideration due upon conversion of the Notes and the due and punctual
performance of all of the covenants and conditions of this Indenture to be performed by the Company, such Successor Company (if not the Company) shall succeed to and, except in the case of a lease of all or substantially all of the Company’s
properties and assets, shall be substituted for the Company, with the same effect as if it had been named herein as the party of the first part. Such Successor Company thereupon may cause to be signed, and may issue either in its own name or in the
name of the Company any or all of the Notes issuable hereunder which theretofore shall not have been signed by the Company and delivered to the Trustee; and, upon the order of such Successor Company instead of the Company and subject to all the
terms, conditions and limitations in this Indenture prescribed, the Trustee shall authenticate and shall deliver, or cause to be authenticated and delivered, any Notes that previously shall have been signed and delivered by the Officers of the
Company to the Trustee for authentication, and any Notes that such Successor Company thereafter shall cause to be signed and delivered to the Trustee for that purpose. All the Notes so issued shall in all respects have the same legal rank and
benefit under this Indenture as the Notes theretofore or thereafter issued in accordance with the terms of this Indenture as though all of such Notes had been issued at the date of the execution hereof. In the event of any such consolidation,
merger, sale, conveyance or transfer (but not in the case of a lease), upon compliance with this Article 11 the Person named as the “Company” in the first paragraph of this Indenture (or any successor that shall thereafter have become such
in the manner prescribed in this Article 11) may be dissolved, wound up and liquidated at any time thereafter and, except in the case of a lease, such Person shall be released from its liabilities as obligor and maker of the Notes and from its
obligations under this Indenture and the Notes. 
 In case of any such consolidation, merger, sale, conveyance, transfer or lease, such
changes in phraseology and form (but not in substance) may be made in the Notes thereafter to be issued as may be appropriate. 
 ARTICLE 12

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

  
 52 

 ARTICLE 13 

INTENTIONALLY OMITTED 

ARTICLE 14 

CONVERSION OF NOTES 

Section 14.01. Conversion Privilege. (a) Subject to and upon compliance with the provisions of this Article 14, each Holder
of a Note shall have the right, at such Holder’s option, to convert all or any portion (if the portion to be converted is $1,000 principal amount or an integral multiple thereof) of such Note (i) subject to satisfaction of the conditions
described in Section 14.01(b), at any time prior to the close of business on the Business Day immediately preceding August 15, 2018, only under the circumstances and during the periods set forth in Section 14.01(b), and (ii) regardless of
the conditions described in Section 14.01(b), at any time during the period from, and including, August 15, 2018 to the close of business on the second Scheduled Trading Day immediately preceding the Maturity Date, at an initial conversion rate
of 186.4280 shares of Common Stock (subject to adjustment as provided in this Article 14, the “Conversion Rate”) per $1,000 principal amount of Notes (subject to, and in accordance with, the settlement provisions of Section 14.02,
the “Conversion Obligation”). 
 (b) (i) Prior to the close of business on the Business Day immediately preceding
August 15, 2018, a Holder may surrender all or any portion of its Notes for conversion at any time during the five Business Day period immediately after any five consecutive Trading Day period (the “Measurement Period”) in
which the Trading Price per $1,000 principal amount of Notes, as determined following a request by a Holder of Notes in accordance with this subsection (b)(i), for each Trading Day of the Measurement Period was less than 98% of the product of the
Last Reported Sale Price of the Common Stock and the Conversion Rate on each such Trading Day. The Trading Prices shall be determined by the Bid Solicitation Agent pursuant to this subsection (b)(i) and the definition of Trading Price set forth in
this Indenture. The Company shall provide written notice to the Bid Solicitation Agent (if other than the Company) of the three independent nationally recognized securities dealers selected by the Company pursuant to the definition of Trading Price,
along with appropriate contact information for each. The Bid Solicitation Agent (if other than the Company) shall have no obligation to determine the Trading Price per $1,000 principal amount of Notes unless the Company has requested such
determination, and the Company shall have no obligation to make such request (or, if the Company is acting as Bid Solicitation Agent, the Company shall have no obligation to determine the Trading Price per $1,000 principal amount of Notes) unless a
Holder of at least $1,000,000 aggregate principal amount of Notes provides the Company with reasonable evidence that the Trading Price per $1,000 principal amount of Notes would be less than 98% of the product of the Last Reported Sale Price of the
Common Stock and the Conversion Rate, at which time the Company shall instruct the Bid Solicitation Agent (if other than the Company) to determine, or if the Company is acting as Bid Solicitation Agent, the Company shall determine, the Trading Price
per $1,000 principal amount of Notes beginning on the next Trading Day and on each successive Trading Day until the Trading Price per $1,000 principal amount of Notes is greater than or equal to 98% of the product of the Last Reported Sale Price of
the Common Stock and the Conversion Rate. If (x) the Company is not acting as Bid Solicitation Agent, and the Company 

  
 53 

 
does not instruct the Bid Solicitation Agent to determine the Trading Price per $1,000 principal amount of Notes when obligated as provided in the preceding sentence, or if the Company instructs
the Bid Solicitation Agent to obtain bids and the Bid Solicitation Agent fails to make such determination, or (y) the Company is acting as Bid Solicitation Agent and the Company fails to make such determination when obligated as provided in the
preceding sentence, then, in either case, the Trading Price per $1,000 principal amount of Notes shall be deemed to be less than 98% of the product of the Last Reported Sale Price of the Common Stock and the Conversion Rate on each Trading Day of
such failure. If the Trading Price condition set forth above has been met, the Company shall so notify the Holders, the Trustee and the Conversion Agent (if other than the Trustee) in writing. If, at any time after the Trading Price condition set
forth above has been met, the Trading Price per $1,000 principal amount of Notes is greater than or equal to 98% of the product of the Last Reported Sale Price of the Common Stock and the Conversion Rate for such date, the Company shall so notify
the Holders of the Notes, the Trustee and the Conversion Agent (if other than the Trustee) in writing. 
 (ii) If, prior to
the close of business on the Business Day immediately preceding August 15, 2018, the Company elects to: 
 (A) issue to
all or substantially all holders of the Common Stock any rights, options or warrants (other than in connection with a stockholder rights plan) entitling them, for a period of not more than 45 calendar days after the declaration date for such
issuance, to subscribe for or purchase shares of the Common Stock at a price per share that is less than the average of the Last Reported Sale Prices of the Common Stock for the 10 consecutive Trading Day period ending on, and including, the Trading
Day immediately preceding the declaration date for such issuance; or 
 (B) distribute to all or substantially all holders of
the Common Stock the Company’s assets, securities or rights to purchase securities of the Company, which distribution has a per share value, as reasonably determined by the Board of Directors, exceeding 10% of the Last Reported Sale Price of
the Common Stock on the Trading Day preceding the date of announcement for such distribution, 
 then, in either case, the Company shall notify all Holders
of the Notes, the Trustee and the Conversion Agent (if other than the Trustee) at least 60 Scheduled Trading Days prior to the Ex-Dividend Date for such issuance or distribution. Once the Company has given such notice, a Holder may surrender all or
any portion of its Notes for conversion at any time until the earlier of (1) the close of business on the Business Day immediately preceding the Ex-Dividend Date for such issuance or distribution and (2) the Company’s announcement
that such issuance or distribution will not take place, in each case, even if the Notes are not otherwise convertible at such time. 

(iii) If (x) a transaction or event that constitutes a Fundamental Change or a Make-Whole Fundamental Change occurs prior
to the close of business on the Business Day immediately preceding August 15, 2018, regardless of whether a Holder has the right to require the Company to repurchase the Notes pursuant to Section 15.02, or (y) the

  
 54 

 
Company is a party to a consolidation, merger, binding share exchange, or transfer or lease of all or substantially all of its consolidated assets prior to the close of business on the Business
Day immediately preceding August 15, 2018 pursuant to which the Common Stock would be converted into cash, securities or other assets, then, in each case, all or any portion of a Holder’s Notes may be surrendered for conversion at any time
from or after the effective date of the transaction or event until 35 Trading Days after the effective date of such transaction or event (or, if later, until 35 Trading Days after notice of the effective date of such transaction or event is given
following the occurrence of such transaction or event) or, if such transaction or event also constitutes a Fundamental Change, until the related Fundamental Change Repurchase Date. The Company shall notify Holders, the Trustee and the Conversion
Agent (if other than the Trustee) within three Business Days of the occurrence of such transaction or event. 
 (iv) Prior to
the close of business on the Business Day immediately preceding August 15, 2018, a Holder may surrender all or any portion of its Notes for conversion at any time during any calendar quarter commencing after the calendar quarter ending on
June 30, 2014 (and only during such calendar quarter), if the Last Reported Sale Price of the Common Stock for at least 20 Trading Days (whether or not consecutive) during the period of 30 consecutive Trading Days ending on the last Trading Day
of the immediately preceding calendar quarter is greater than or equal to 130% of the Conversion Price on each applicable Trading Day. The Conversion Agent, on behalf of the Company, shall determine at the beginning of each calendar quarter
commencing after June 30, 2014 whether the Notes may be surrendered for conversion in accordance with this clause (iv) and shall notify the Company and the Trustee if the Notes become convertible in accordance with this clause (iv). 

Section 14.02. Conversion Procedure; Settlement Upon Conversion.  

(a) Subject to this Section 14.02, Section 14.03(b) and Section 14.07(a), upon conversion of any Note, the Company shall pay or deliver, as
the case may be, to the converting Holder, in respect of each $1,000 principal amount of Notes being converted, cash (“Cash Settlement”), shares of Common Stock, together with cash, if applicable, in lieu of delivering any
fractional share of Common Stock in accordance with subsection (j) of this Section 14.02 (“Physical Settlement”) or a combination of cash and shares of Common Stock, together with cash, if applicable, in lieu of delivering any
fractional share of Common Stock in accordance with subsection (j) of this Section 14.02 (“Combination Settlement”), at its election, as set forth in this Section 14.02. Prior to August 15, 2018, the Company may irrevocably
elect, in its sole discretion without the consent of the Holders, Combination Settlement with a Specified Dollar Amount to be determined by the Company (an “Irrevocable Election”) for all conversions subsequent to the date of such
election; provided, however, that unless and until the Company has obtained stockholder approval to issues shares of the Common Stock in excess of the Aggregate Share Cap upon conversion of the Notes in accordance with the listing
standards of The NASDAQ Global Market the Company shall be required to elect Combination Settlement with a Specified Dollar Amount of at least $1,000 for all Notes submitted for conversion. If the Company makes such an election, it shall notify each
Holder, the Trustee and the Paying Agent and the Conversion Agent (if other than the Trustee) in writing. 

  
 55 

 (i) All conversions for which the relevant Conversion Date occurs during the
period from, and including, August 15, 2018 to the close of business on the second Scheduled Trading Day immediately preceding the Maturity Date shall be settled using the same Settlement Method. 

(ii) Except for any conversions for which the relevant Conversion Date occurs during the period from, and including,
August 15, 2018 to the close of business on the second Scheduled Trading Day immediately preceding the Maturity Date, the Company shall use the same Settlement Method for all conversions occurring on the same Conversion Date, but, unless the
Company shall have made an Irrevocable Election, the Company shall not have any obligation to use the same Settlement Method with respect to conversions that occur on different Conversion Dates. 

(iii) If, in respect of any Conversion Date (or the period described in the third immediately succeeding set of parentheses, as
the case may be), the Company elects to deliver a notice (the “Settlement Notice”) of the relevant Settlement Method in respect of such Conversion Date (or such period, as the case may be), the Company, through the Trustee, shall
deliver such Settlement Notice to converting Holders no later than the close of business on the second Scheduled Trading Day immediately following the relevant Conversion Date (or, in the case of any conversions occurring from, and including,
August 15, 2018 to the close of business on the second Scheduled Trading Day immediately preceding the Maturity Date, no later than the close of business on the Business Day immediately preceding August 15, 2018). If the Company does not
elect a Settlement Method prior to the deadline set forth in the immediately preceding sentence, the Company shall no longer have the right to elect Cash Settlement or Physical Settlement during such period and the Company shall be deemed to have
elected Combination Settlement in respect of its Conversion Obligation, and the Specified Dollar Amount shall be equal to $1,000. Such Settlement Notice shall specify the relevant Settlement Method and in the case of an election of Combination
Settlement, the relevant Settlement Notice shall indicate the Specified Dollar Amount. If the Company delivers a Settlement Notice electing Combination Settlement in respect of its Conversion Obligation but does not indicate a Specified Dollar
Amount in such Settlement Notice, the Specified Dollar Amount shall be deemed to be $1,000. 
 (iv) Notwithstanding anything
else in this Section 14.02 to the contrary, unless and until the Company obtains stockholder approval to issue more than 13,164,951 shares of the Common Stock, which is 19.99% of the Common Stock outstanding on November 18, 2013 (the
“Aggregate Share Cap”), upon conversion of the Notes in accordance with the listing standards of The NASDAQ Global Market, (x) the Company shall be required to elect Combination Settlement with a Specified Dollar Amount of at
least $1,000 for all Notes submitted for conversion, and (y) if the number of shares of Common Stock deliverable for conversion value in excess of the Specified Dollar Amount is greater than the Conversion Share Cap, then the number of shares
to be delivered by the Company shall be capped at the Conversion Share Cap and the Company shall pay cash in lieu of such shares of Common Stock that would otherwise be deliverable. Such cash amount in clause (y) shall be determined based on
the Daily VWAP for each Trading Day during the relevant Observation Period. 

  
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 The Aggregate Share Cap will not be adjusted for any increase in the applicable
Conversion Rate (except in the case of a share split or share combination of the Common Stock as described in Section 14.04(a)). The Conversion Share Cap and the Aggregate Share Cap will apply until the Company has obtained stockholder approval to
issues shares of the Common Stock in excess of the Aggregate Share Cap upon conversion of the Notes in accordance with the listing standards of The NASDAQ Global Market. 

The Company agrees to use its reasonable best efforts to include for vote by the stockholders of the Company during the next
annual stockholder meeting of the Company the approval, in accordance with the listing standards of The NASDAQ Global Market, of the issuance of shares of Common Stock upon conversion of the Notes in excess of the Aggregate Share Cap. 

(v) The cash, shares of Common Stock or combination of cash and shares of Common Stock in respect of any conversion of Notes
(the “Settlement Amount”) shall be computed as follows: 
 (A) if the Company elects to satisfy its
Conversion Obligation in respect of such conversion by Physical Settlement, the Company shall deliver to the converting Holder in respect of each $1,000 principal amount of Notes being converted a number of shares of Common Stock equal to the
Conversion Rate in effect on the Conversion Date; 
 (B) if the Company elects to satisfy its Conversion Obligation in
respect of such conversion by Cash Settlement, the Company shall pay to the converting Holder in respect of each $1,000 principal amount of Notes being converted cash in an amount equal to the sum of the Daily Conversion Values for each of the 50
consecutive Trading Days during the relevant Observation Period; and 
 (C) if the Company elects (or is deemed to have
elected) to satisfy its Conversion Obligation in respect of such conversion by Combination Settlement, the Company shall pay or deliver, as the case may be, in respect of each $1,000 principal amount of Notes being converted, a Settlement Amount
equal to the sum of the Daily Settlement Amounts for each of the 50 consecutive Trading Days during the relevant Observation Period, subject to the Conversion Share Cap. 

(vi) The Daily Settlement Amounts (if applicable) and the Daily Conversion Values (if applicable) shall be determined by the
Company promptly following the last day of the Observation Period. Promptly after such determination of the Daily Settlement Amounts or the Daily Conversion Values, as the case may be, and the amount of cash payable in lieu of delivering any
fractional share of Common Stock, the Company shall notify the Trustee and the Conversion Agent (if other than the Trustee) of the Daily Settlement Amounts or the Daily Conversion Values, as the case may be, and the amount of cash payable in lieu of
delivering fractional shares of Common Stock. The Trustee 

  
 57 

 
and the Conversion Agent (if other than the Trustee) shall have no responsibility for any such determination. 

(b) Subject to Section 14.02(e), before any Holder of a Note shall be entitled to convert a Note as set forth above, such Holder shall
(i) in the case of a Global Note, comply with the procedures of the Depositary in effect at that time and, if required, pay funds equal to interest payable on the next Interest Payment Date to which such Holder is not entitled as set forth in
Section 14.02(h) and (ii) in the case of a Physical Note (1) complete, manually sign and deliver an irrevocable notice to the Conversion Agent as set forth in the Form of Notice of Conversion (or a facsimile thereof) (a “Notice of
Conversion”) at the office of the Conversion Agent and state in writing therein the principal amount of Notes to be converted and the name or names (with addresses) in which such Holder wishes the certificate or certificates for any shares
of Common Stock to be delivered upon settlement of the Conversion Obligation to be registered, (2) surrender such Notes, duly endorsed to the Company or in blank (and accompanied by appropriate endorsement and transfer documents), at the office
of the Conversion Agent, (3) if required, furnish appropriate endorsements and transfer documents, (4) if required, pay all transfer and similar taxes as set forth in Sections 14.02(d) and (e) and (5) if required, pay funds equal
to interest payable on the next Interest Payment Date to which such Holder is not entitled as set forth in Section 14.02(h). The Trustee (and if different, the Conversion Agent) shall notify the Company of any conversion pursuant to this Article 14
on the Conversion Date for such conversion. No Notice of Conversion with respect to any Notes may be surrendered by a Holder thereof if such Holder has also delivered a Fundamental Change Repurchase Notice to the Company in respect of such Notes and
has not validly withdrawn such Fundamental Change Repurchase Notice in accordance with Section 15.03. 
 If more than one Note shall be
surrendered for conversion at one time by the same Holder, the Conversion Obligation with respect to such Notes shall be computed on the basis of the aggregate principal amount of the Notes (or specified portions thereof to the extent permitted
thereby) so surrendered. 
 (c) A Note shall be deemed to have been converted immediately prior to the close of business on the date (the
“Conversion Date”) that the Holder has complied with the requirements set forth in subsection (b) above. The Company shall pay or deliver, as the case may be, the consideration due in respect of the Conversion Obligation on the
third Business Day immediately following the relevant Conversion Date, if the Company elects Physical Settlement (provided that, with respect to any Conversion Date occurring on or after August 15, 2018, the Company shall settle any such
conversion on the Maturity Date), or on the third Business Day immediately following the last Trading Day of the relevant Observation Period, in the case of any other Settlement Method. If any shares of Common Stock are due to converting Holders,
the Company shall issue or cause to be issued, and deliver to the Conversion Agent or to such Holder, or such Holder’s nominee or nominees, certificates or a book-entry transfer through the Depositary for the full number of shares of Common
Stock to which such Holder shall be entitled in satisfaction of the Company’s Conversion Obligation. 
 (d) In case any Note shall be
surrendered for partial conversion, the Company shall execute and the Trustee shall authenticate and deliver to or upon the written order of the Holder of the Note so surrendered a new Note or Notes in authorized denominations in an aggregate

  
 58 

 
principal amount equal to the unconverted portion of the surrendered Note, without payment of any service charge by the converting Holder but, if required by the Company or Trustee, with payment
of a sum sufficient to cover any documentary, stamp or similar issue or transfer tax or similar governmental charge required by law or that may be imposed in connection therewith as a result of the name of the Holder of the new Notes issued upon
such conversion being different from the name of the Holder of the old Notes surrendered for such conversion. 
 (e) If a Holder submits a
Note for conversion, the Company shall pay any documentary, stamp or similar issue or transfer tax due on the issue of any shares of Common Stock upon conversion, unless the tax is due because the Holder requests such shares to be issued in a name
other than the Holder’s name, in which case the Holder shall pay that tax. The Conversion Agent may refuse to deliver the certificates representing the shares of Common Stock being issued in a name other than the Holder’s name until the
Trustee receives a sum sufficient to pay any tax that is due by such Holder in accordance with the immediately preceding sentence. 
 (f)
Except as provided in Section 14.04, no adjustment shall be made for dividends on any shares of Common Stock issued upon the conversion of any Note as provided in this Article 14. 

(g) Upon the conversion of an interest in a Global Note, the Trustee, or the Custodian at the direction of the Trustee, shall make a notation
on such Global Note as to the reduction in the principal amount represented thereby. The Company shall notify the Trustee in writing of any conversion of Notes effected through any Conversion Agent other than the Trustee. 

(h) Upon conversion, a Holder shall not receive any separate cash payment for accrued and unpaid interest, if any, except as set forth below.
The Company’s settlement of the full Conversion Obligation shall be deemed to satisfy in full its obligation to pay the principal amount of the Note and accrued and unpaid interest, if any, to, but not including, the relevant Conversion Date.
As a result, accrued and unpaid interest, if any, to, but not including, the relevant Conversion Date shall be deemed to be paid in full rather than canceled, extinguished or forfeited. Upon a conversion of Notes into a combination of cash and
shares of Common Stock, accrued and unpaid interest will be deemed to be paid first out of the cash paid upon such conversion. Notwithstanding the foregoing, if Notes are converted after the close of business on a Regular Record Date, Holders of
such Notes as of the close of business on such Regular Record Date will receive the full amount of interest payable on such Notes on the corresponding Interest Payment Date notwithstanding the conversion. Notes surrendered for conversion during the
period from the close of business on any Regular Record Date to the open of business on the immediately following Interest Payment Date must be accompanied by funds equal to the amount of interest payable on the Notes so converted; provided
that no such payment shall be required (1) for conversions following the Regular Record Date immediately preceding the Maturity Date; (2) if the Company has specified a Fundamental Change Repurchase Date that is after a Regular Record Date
and on or prior to the Scheduled Trading Day immediately succeeding the corresponding Interest Payment Date; or (3) to the extent of any Defaulted Amounts, if any Defaulted Amounts exists at the time of conversion with respect to such Note.
Therefore, for the avoidance of doubt, all Holders of record on the Regular Record Date immediately preceding the Maturity Date and any Fundamental Change Repurchase Date shall 

  
 59 

 
receive the full interest payment due on the Maturity Date or other applicable Interest Payment Date regardless of whether their Notes have been converted following such Regular Record Date. 

(i) The Person in whose name the certificate 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 relevant Conversion Date (if the Company elects to satisfy the related Conversion Obligation by Physical Settlement) or the last Trading Day of the relevant Observation Period (if the Company
elects to satisfy the related Conversion Obligation by Combination Settlement), as the case may be. Upon a conversion of Notes, such Person shall no longer be a Holder of such Notes surrendered for conversion. 

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

Section 14.03. Increased Conversion Rate Applicable to Certain Notes Surrendered in Connection with Make-Whole Fundamental
Changes. (a) If a Make-Whole Fundamental Change occurs or becomes effective prior to the Maturity Date and a Holder elects to convert its Notes in connection with such Make-Whole Fundamental Change, the Company shall, under the
circumstances described below, increase the Conversion Rate for the Notes so surrendered for conversion by a number of additional shares of Common Stock (the “Additional Shares”), as described below. A conversion of Notes shall be
deemed for these purposes to be “in connection with” such Make-Whole Fundamental Change if the relevant Notice of Conversion is received by the Conversion Agent from, and including, the Effective Date of the Make-Whole Fundamental Change
up to, and including, the Business Day immediately prior to the related Fundamental Change Repurchase Date (or, in the case of a Make-Whole Fundamental Change that would have been a Fundamental Change but for the proviso in clause (b) of
the definition thereof, the 35th Trading Day immediately following the Effective Date of such Make-Whole Fundamental Change). 
 (b) Upon
surrender of Notes for conversion in connection with a Make-Whole Fundamental Change pursuant to Section 14.01(b)(iii), the Company shall, at its option, satisfy the related Conversion Obligation by Physical Settlement, Cash Settlement or
Combination Settlement in accordance with Section 14.02, based on the Conversion Rate as increased per $1,000 principal amount of Notes pursuant to this Section 14.03(b) to reflect the Additional Shares; provided, however,
that if, at the effective time of a Make-Whole Fundamental Change described in clause (b) of the definition of Fundamental Change, the Reference Property following such Make-Whole Fundamental Change is composed entirely of cash, for any
conversion of Notes following the Effective Date of such Make-Whole Fundamental Change, the Conversion Obligation shall be calculated based solely on the Stock Price for the transaction and shall be deemed to be an amount of cash per $1,000
principal amount of converted Notes equal 

  
 60 

 
to the Conversion Rate (including any adjustment for Additional Shares), multiplied by such Stock Price. In such event, the Conversion Obligation shall be paid to Holders in cash on the third
Business Day following the Conversion Date. The Company shall notify the Holders of Notes of the Effective Date of any Make-Whole Fundamental Change no later than five Business Days after such Effective Date. 

(c) The number of Additional Shares, if any, by which the Conversion Rate shall be increased shall be determined by reference to the table
below in Section 14.03(e), based on the date on which the Make-Whole Fundamental Change occurs or becomes effective (the “Effective Date”) and the price (the “Stock Price”) paid (or deemed to be paid) per share
of the Common Stock in the Make-Whole Fundamental Change. If the holders of the Common Stock receive in exchange for their Common Stock only cash in a Make-Whole Fundamental Change described in clause (b) of the definition of Fundamental
Change, the Stock Price shall be the cash amount paid per share. Otherwise, the Stock Price shall be the average of the Last Reported Sale Prices of the Common Stock over the five Trading Day period ending on, and including, the Trading Day
immediately preceding the Effective Date of the Make-Whole Fundamental Change. The Company shall make appropriate adjustments to the Stock Price, in its good faith determination, to account for any adjustment to the Conversion Rate that becomes
effective, or any event requiring an adjustment to the Conversion Rate where the Ex-Dividend Date of the event occurs, during such five consecutive Trading Day period. 

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

 

																																																									
	 	 	Stock Price	 
	 Effective Date
	 	$4.47	 	 	$5.00	 	 	$5.50	 	 	$6.00	 	 	$6.50	 	 	$7.00	 	 	$8.00	 	 	$10.00	 	 	$12.50	 	 	$15.00	 	 	$17.50	 	 	$20.00	 	 	$22.50	 	 	$25.00	 
	 November 18, 2013
	 	 	37.2857	  	 	 	31.5500	  	 	 	27.7655	  	 	 	24.7767	  	 	 	22.2892	  	 	 	20.1586	  	 	 	16.6775	  	 	 	11.7500	  	 	 	7.7528	  	 	 	5.0613	  	 	 	3.1486	  	 	 	1.7750	  	 	 	0.8271	  	 	 	0.2428	  
	 November 15, 2014
	 	 	37.2857	  	 	 	26.5140	  	 	 	23.1127	  	 	 	20.5733	  	 	 	18.4954	  	 	 	16.7271	  	 	 	13.8425	  	 	 	9.7650	  	 	 	6.4648	  	 	 	4.2447	  	 	 	2.6589	  	 	 	1.5060	  	 	 	0.6982	  	 	 	0.1988	  
	 November 15, 2015
	 	 	37.2857	  	 	 	21.2060	  	 	 	18.0873	  	 	 	16.0200	  	 	 	14.3908	  	 	 	13.0129	  	 	 	10.7700	  	 	 	7.6070	  	 	 	5.0520	  	 	 	3.3353	  	 	 	2.1057	  	 	 	1.2000	  	 	 	0.5516	  	 	 	0.1456	  
	 November 15, 2016
	 	 	37.2857	  	 	 	15.9400	  	 	 	12.7400	  	 	 	11.1500	  	 	 	10.0062	  	 	 	9.0486	  	 	 	7.4925	  	 	 	5.3010	  	 	 	3.5360	  	 	 	2.3520	  	 	 	1.5034	  	 	 	0.8710	  	 	 	0.4044	  	 	 	0.1020	  
	 November 15, 2017
	 	 	37.2857	  	 	 	14.7560	  	 	 	6.9873	  	 	 	5.8750	  	 	 	5.2677	  	 	 	4.7657	  	 	 	3.9488	  	 	 	2.8020	  	 	 	1.8800	  	 	 	1.2640	  	 	 	0.8223	  	 	 	0.4905	  	 	 	0.2364	  	 	 	0.0592	  
	 November 15, 2018
	 	 	37.2857	  	 	 	13.5720	  	 	 	0.0000	  	 	 	0.0000	  	 	 	0.0000	  	 	 	0.0000	  	 	 	0.0000	  	 	 	0.0000	  	 	 	0.0000	  	 	 	0.0000	  	 	 	0.0000	  	 	 	0.0000	  	 	 	0.0000	  	 	 	0.0000	  

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

(i) if the Stock Price is between two Stock Prices in the table above or the Effective Date is between two Effective Dates in
the table, the number of Additional Shares shall be determined by a straight-line interpolation between the number of 

  
 61 

 
Additional Shares set forth for the higher and lower Stock Prices and the earlier and later Effective Dates, as applicable, based on a 365-day year; 

(ii) if the Stock Price is greater than $ 25.00 per share (subject to adjustment in the same manner as the Stock Prices
set forth in the column headings of the table above pursuant to subsection (d) above), no Additional Shares shall be added to the Conversion Rate; and 

(iii) if the Stock Price is less than $ 4.47 per share (subject to adjustment in the same manner as the Stock Prices set
forth in the column headings of the table above pursuant to subsection (d) above), no Additional Shares shall be added to the Conversion Rate. 

Notwithstanding the foregoing, in no event shall the Conversion Rate per $1,000 principal amount of Notes exceed 223.7137 shares of Common Stock, subject to
adjustment in the same manner as the Conversion Rate pursuant to Section 14.04. 
 (f) Nothing in this Section 14.03 shall prevent an
adjustment to the Conversion Rate pursuant to Section 14.04 in respect of a Make-Whole Fundamental Change. 
 Section 14.04.
Adjustment of Conversion Rate. The Conversion Rate shall be adjusted from time to time by the Company if any of the following events occurs, except that the Company shall not make any adjustments to the Conversion Rate if Holders of the Notes
participate (other than in the case of (x) a share split or share combination or (y) a tender or exchange offer), at the same time and upon the same terms as holders of the Common Stock and solely as a result of holding the Notes, in any
of the transactions described in this Section 14.04, without having to convert their Notes, as if they held a number of shares of Common Stock equal to the Conversion Rate, multiplied by the principal amount (expressed in thousands) of Notes
held by such Holder. 
 (a) If the Company exclusively issues shares of Common Stock as a dividend or distribution on shares of the Common
Stock, or if the Company effects a share split or share combination, the Conversion Rate shall be adjusted based on the following formula: 
  

 
 where, 
  

					
	CR0	    	=	    	the Conversion Rate in effect immediately prior to the open of business on the Ex-Dividend Date of such dividend or distribution, or immediately prior to the open of business on the Effective Date of such share split or share
combination, as applicable;
			
	CR’	    	=	    	the Conversion Rate in effect immediately after the open of business on such Ex-Dividend Date or Effective Date;

  
 62 

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

 Any adjustment made under this Section 14.04(a) shall become effective immediately after the open of business on the
Ex-Dividend Date for such dividend or distribution, or immediately after the open of business on the Effective Date for such share split or share combination, as applicable. If any dividend or distribution of the type described in this Section
14.04(a) is declared but not so paid or made, or any share split or combination of the type described in this Section 14.04(a) is announced but the outstanding shares of the Common Stock are not split or combined, as the case may be, the Conversion
Rate shall be immediately readjusted, effective as of the date the Board of Directors determines not to pay such dividend or distribution, or not to split or combine the outstanding shares of the Common Stock, as the case may be, to the Conversion
Rate that would then be in effect if such dividend or distribution had not been declared or such share split or combination had not been announced. 

(b) If the Company issues to all or substantially all holders of the Common Stock any rights, options or warrants entitling them, for a period
of not more than 45 calendar days after the declaration date of such issuance, to subscribe for or purchase shares of the Common Stock at a price per share that is less than the average of the Last Reported Sale Prices of the Common Stock for the 10
consecutive Trading Day period ending on, and including, the Trading Day immediately preceding the date of announcement of such issuance, the Conversion Rate shall be increased based on the following formula: 

 
 

 
 where, 
  

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

  
 63 

					
			
		    		    	period ending on, and including, the Trading Day immediately preceding the date of announcement of the issuance of such rights, options or warrants.

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

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

(c) If the Company distributes shares of its Capital Stock, evidences of its indebtedness, other assets or property of the Company or rights,
options or warrants to acquire its Capital Stock or other securities, to all or substantially all holders of the Common Stock, excluding (i) dividends, distributions or issuances as to which an adjustment was effected pursuant to Section
14.04(a) or Section 14.04(b), (ii) dividends or distributions paid exclusively in cash as to which an adjustment was effected pursuant to Section 14.04(d), (iii) distributions of Reference Property in a transaction described in
Section 14.07 and (iv) Spin-Offs as to which the provisions set forth below in this Section 14.04(c) shall apply (any of such shares of Capital Stock, evidences of indebtedness, other assets or property or rights, options or warrants to
acquire Capital Stock or other securities, the “Distributed Property”), then the Conversion Rate shall be increased based on the following formula: 
  

 
 where, 
  

					
	CR0	    	=	    	the Conversion Rate in effect immediately prior to the open of business on the Ex-Dividend Date for such distribution;
			
	CR’	    	=	    	the Conversion Rate in effect immediately after the open of business on such Ex-Dividend Date;

  
 64 

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

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

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

 
 where, 
  

					
	CR0	    	=	    	the Conversion Rate in effect immediately prior to the open of business on the Ex-Dividend Date for such Spin-Off;
			
	CR’	    	=	    	the Conversion Rate in effect immediately after the open of business on the Ex-Dividend Date for such Spin-Off;
			
	FMV0	    	=	    	the average of the Last Reported Sale Prices of the Capital Stock or similar equity interest distributed to holders of the Common Stock applicable to one share of the Common Stock (determined by reference to the definition of Last
Reported Sale Price as set forth in Section 1.01 as if references therein to Common Stock were to

  
 65 

					
		    		  	such Capital Stock or similar equity interest) over the first 10 consecutive Trading Day period after, and including, the Ex-Dividend Date of the Spin-Off (the “Valuation Period”); and
			
	MP0	    	=	  	the average of the Last Reported Sale Prices of the Common Stock over the Valuation Period.

 The adjustment to the Conversion Rate under the preceding paragraph shall occur on the last Trading Day of the Valuation
Period, but will be given effect as of the close of business on the Ex-Dividend Date for such Spin-Off. Notwithstanding the foregoing, in respect of any conversion of Notes during the Valuation Period, references in the portion of this Section
14.04(c) related to Spin-Offs with respect to 10 Trading Days shall be deemed to be replaced with such lesser number of Trading Days as have elapsed between the Ex-Dividend Date of such Spin-Off and the
Conversion Date in determining the Conversion Rate. If the Ex-Dividend Date of the Spin-Off is after the 10th Trading Day immediately preceding, and including, the end of any Observation Period in respect of a conversion of Notes, references in the
preceding paragraph to 10 Trading Days will be deemed to be replaced, solely in respect of that conversion of Notes, with such lesser number of Trading Days as have elapsed from, and including, the Ex-Dividend Date for the Spin-Off to, and
including, the last Trading Day of such Observation Period. 
 For purposes of this Section 14.04(c) (and subject in all respect to Section
14.11), rights, options or warrants distributed by the Company to all holders of the Common Stock entitling them to subscribe for or purchase shares of the Company’s Capital Stock, including Common Stock (either initially or under certain
circumstances), which rights, options or warrants, until the occurrence of a specified event or events (“Trigger Event”): (i) are deemed to be transferred with such shares of the Common Stock; (ii) are not exercisable; and
(iii) are also issued in respect of future issuances of the Common Stock, shall be deemed not to have been distributed for purposes of this Section 14.04(c) (and no adjustment to the Conversion Rate under this Section 14.04(c) will be required)
until the occurrence of the earliest Trigger Event, whereupon such rights, options or warrants shall be deemed to have been distributed and an appropriate adjustment (if any is required) to the Conversion Rate shall be made under this Section
14.04(c). If any such right, option or warrant, including any such existing rights, options or warrants distributed prior to the date of this Indenture, are subject to events, upon the occurrence of which such rights, options or warrants become
exercisable to purchase different securities, evidences of indebtedness or other assets, then the date of the occurrence of any and each such event shall be deemed to be the date of distribution and Ex-Dividend Date with respect to new rights,
options or warrants with such rights (in which case the existing rights, options or warrants shall be deemed to terminate and expire on such date without exercise by any of the holders thereof). In addition, in the event of any distribution (or
deemed distribution) of rights, options or warrants, or any Trigger Event or other event (of the type described in the immediately preceding sentence) with respect thereto that was counted for purposes of calculating a distribution amount for which
an adjustment to the Conversion Rate under this Section 14.04(c) was made, (1) in the case of any such rights, options or warrants that shall all have been redeemed or purchased without exercise by any holders thereof, upon such final
redemption or purchase (x) the Conversion Rate shall be readjusted as if such rights, options or warrants had not been issued and (y) the Conversion Rate shall then again be readjusted to give effect to such distribution, deemed
distribution or Trigger Event, as the case may be, as though it 

  
 66 

 
were a cash distribution, equal to the per share redemption or purchase price received by a holder or holders of Common Stock with respect to such rights, options or warrants (assuming such
holder had retained such rights, options or warrants), made to all holders of Common Stock as of the date of such redemption or purchase, and (2) in the case of such rights, options or warrants that shall have expired or been terminated or
deemed to have been terminated as provided in the immediately preceding sentence without exercise by any holders thereof, the Conversion Rate shall be readjusted as if such rights, options and warrants had not been issued. 

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

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

 
 where, 
  

					
	CR0	    	=	  	the Conversion Rate in effect immediately prior to the open of business on the Ex-Dividend Date for such dividend or distribution;
			
	CR’	    	=	  	the Conversion Rate in effect immediately after the open of business on the Ex-Dividend Date for such dividend or distribution;

  
 67 

					
	SP0	    	=	  	the Last Reported Sale Price of the Common Stock on the Trading Day immediately preceding the Ex-Dividend Date for such dividend or distribution; and
			
	C	    	=	  	the amount in cash per share the Company distributes to all or substantially all holders of the Common Stock.

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

(e) If the Company or any of its Subsidiaries makes a payment in respect of a tender or exchange offer for the Common Stock, to the extent
that the cash and value of any other consideration included in the payment per share of the Common Stock exceeds the Last Reported Sale Price of the Common Stock on the Trading Day next succeeding the last date on which tenders or exchanges may be
made pursuant to such tender or exchange offer, the Conversion Rate shall be increased based on the following formula: 
  

 
 

 
 where, 
  

					
	CR0	    	=	  	the Conversion Rate in effect immediately prior to the close of business on the Trading Day next succeeding the date such tender or exchange offer expires;
			
	CR’	    	=	  	the Conversion Rate in effect immediately after the close of business on the Trading Day next succeeding the date such tender or exchange offer expires;
			
	AC	    	=	  	the aggregate value of all cash and any other consideration (as determined by the Board of Directors) paid or payable for shares of Common Stock purchased in such tender or exchange offer;
			
	OS0	    	=	  	the number of shares of Common Stock outstanding immediately prior to the date such tender or exchange offer expires (prior to giving effect to the purchase of all shares of Common Stock accepted for purchase or exchange in such
tender or exchange offer);
			
	OS’	    	=	  	the number of shares of Common Stock outstanding immediately after the date such tender or exchange offer expires (after giving effect to the purchase of all

  
 68 

					
			
		    		    	shares of Common Stock accepted for purchase or exchange in such tender or exchange offer); and
			
	SP’	    	=	    	the average of the Last Reported Sale Prices of the Common Stock over the 10 consecutive Trading Day period commencing on, and including, the Trading Day next succeeding the date such tender or exchange offer expires.

 The adjustment to the Conversion Rate under this Section 14.04(e) shall occur at the close of business on the 10th Trading Day
immediately following, and including, the Trading Day next succeeding the date such tender or exchange offer expires; provided that in respect of any conversion of Notes within the 10 Trading Days immediately following, and including, the
Trading Day next succeeding the expiration date of any tender or exchange offer, references in this Section 14.04(e) with respect to 10 Trading Days shall be deemed replaced with such lesser number of Trading Days as have elapsed between the date
that such tender or exchange offer expires and the Conversion Date in determining the Conversion Rate. In addition, if the Trading Day next succeeding the date such tender or exchange offer expires is after the 10th Trading Day immediately
preceding, and including, the end of any Observation Period in respect of a conversion of Notes, references in the preceding paragraph to 10 Trading Days shall be deemed to be replaced, solely in respect of that conversion of Notes, with such lesser
number of Trading Days as have elapsed from, and including, the Trading Day next succeeding the date such tender or exchange offer expires to, and including, the last Trading Day of such Observation Period. If the Company is obligated to purchase
the Common Stock pursuant to any such tender or exchange offer described in this Section 14.04(e), but is permanently prevented by applicable law from effecting any such purchase or all such purchases are rescinded, the applicable Conversion Rate
shall be readjusted to be the Conversion Rate that would then be in effect if such tender or exchange offer had not been made or had been made only in respect of the purchases that have been effected. 

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

  
 69 

 
shares of the Common Stock or the right to purchase shares of the Common Stock or such convertible or exchangeable securities. 

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

(j) Notwithstanding anything to the contrary in this Article 14, the Conversion Rate shall not be adjusted: 

(i) upon the issuance of any shares of Common Stock pursuant to any present or future plan providing for the reinvestment of
dividends or interest payable on the Company’s securities and the investment of additional optional amounts in shares of Common Stock under any plan; 

(ii) upon the issuance of any shares of Common Stock or options or rights to purchase those shares pursuant to any present or
future employee, director or consultant benefit plan or program of or assumed by the Company or any of the Company’s Subsidiaries; 

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

(iv) upon the repurchase of any shares of Common Stock pursuant to an open-market share repurchase program or other buy-back
transaction that is not a tender offer or exchange offer of the nature described in Section 14.04(e); 
 (v) solely for a
change in the par value of the Common Stock; or 
 (vi) for accrued and unpaid interest, if any. 

(k) The Company shall not be required to make an adjustment pursuant to clauses (a), (b), (c), (d) or (e) of this Section 14.04 unless such
adjustment would result in a change of at least 1% of the then effective Conversion Rate. However, the Company shall carry forward any adjustment to the Conversion Rate that the Company would otherwise have to make

  
 70 

 
and take that adjustment into account in any subsequent adjustment. Notwithstanding the foregoing, all such carried-forward adjustments shall be made with respect to the Notes (i) in
connection with any subsequent adjustment to the Conversion Rate of at least 1% of the Conversion Rate (when such carried-forward adjustments are taken into account) and (ii) (x) on the Conversion Date for any Notes (in the case of
Physical Settlement) and (y) on each Trading Day of any Observation Period (in the case of Cash Settlement or Combination Settlement). All calculations and other determinations under this Article 14 shall be made by the Company and shall be
made to the nearest one-ten thousandth (1/10,000th) of a share. 
 (l) Whenever the Conversion Rate is adjusted as herein provided, the
Company shall promptly file with the Trustee (and the Conversion Agent if not the Trustee) an Officer’s Certificate setting forth the Conversion Rate after such adjustment and setting forth a brief statement of the facts requiring such
adjustment. Unless and until a Responsible Officer of the Trustee shall have received such Officer’s Certificate, the Trustee shall not be deemed to have knowledge of any adjustment of the Conversion Rate and may assume without inquiry that the
last Conversion Rate of which it has knowledge is still in effect. Promptly after delivery of such certificate, the Company shall prepare a notice of such adjustment of the Conversion Rate setting forth the adjusted Conversion Rate and the date on
which each adjustment becomes effective and shall give such notice of such adjustment of the Conversion Rate to each Holder. Failure to give such notice shall not affect the legality or validity of any such adjustment. 

(m) For purposes of this Section 14.04, the number of shares of Common Stock at any time outstanding shall not include shares of Common Stock
held in the treasury of the Company so long as the Company does not pay any dividend or make any distribution on shares of Common Stock held in the treasury of the Company, but shall include shares of Common Stock issuable in respect of scrip
certificates issued in lieu of fractions of shares of Common Stock. 
 Section 14.05. Adjustments of Prices. Whenever any
provision of this Indenture requires the Company to calculate the Last Reported Sale Prices, the Daily VWAPs, the Daily Conversion Values or the Daily Settlement Amounts over a span of multiple days (including an Observation Period and the period
for determining the Stock Price for purposes of a Make-Whole Fundamental Change), the Company shall make appropriate adjustments to each to account for any adjustment to the Conversion Rate that becomes effective, or any event requiring an
adjustment to the Conversion Rate where the Ex-Dividend Date of the event occurs, at any time during the period when the Last Reported Sale Prices, the Daily VWAPs, the Daily Conversion Values or the Daily Settlement Amounts are to be calculated.

 Section 14.06. Shares to Be Fully Paid. The Company shall provide, free from preemptive rights, out of its authorized but
unissued shares or shares held in treasury, sufficient shares of Common Stock to provide for conversion of the Notes from time to time as such Notes are presented for conversion (assuming that at the time of computation of such number of shares, all
such Notes would be converted by a single Holder and that Physical Settlement is applicable). 
 Section 14.07. Effect of
Recapitalizations, Reclassifications and Changes of the Common Stock.  
 (a) In the case of: 

  
 71 

 (i) any recapitalization, reclassification or change of the Common Stock (other
than changes resulting from a share split or combination), 
 (ii) any consolidation, merger or combination involving the
Company, 
 (iii) any sale, lease or other transfer to a third party of the consolidated assets of the Company and the
Company’s Subsidiaries substantially as an entirety or 
 (iv) any statutory share exchange, 

in each case, as a result of which the Common Stock would be converted into, or exchanged for, stock, other securities, other property or assets (including
cash or any combination thereof) (any such event, a “Merger Event”), then, at and after the effective time of such Merger Event, the right to convert each $1,000 principal amount of Notes shall be changed into a right to convert
such principal amount of Notes into the kind and amount of shares of stock, other securities or other property or assets (including cash or any combination thereof) that a holder of a number of shares of Common Stock equal to the Conversion Rate
immediately prior to such Merger Event would have owned or been entitled to receive (the “Reference Property,” with each “unit of Reference Property” meaning the kind and amount of Reference Property that a holder
of one share of Common Stock is entitled to receive) upon such Merger Event and, prior to or at the effective time of such Merger Event (other than with respect to a Merger Event in which the Reference Property consists solely of Common Stock), the
Company, purchasing Person or the Successor Company, as the case may be, shall execute with the Trustee a supplemental indenture permitted under Section 10.01(f) providing for such change in the right to convert each $1,000 principal amount of
Notes; provided, however, that at and after the effective time of the Merger Event (A) the Company, purchasing Person or Successor Company, as the case may be, shall continue to have the right to determine the form of
consideration to be paid or delivered, as the case may be, upon conversion of Notes in accordance with Section 14.02 and (B) (I) any amount payable in cash upon conversion of the Notes in accordance with Section 14.02 shall
continue to be payable in cash, (II) any shares of Common Stock that the Company would have been required to deliver upon conversion of the Notes in accordance with Section 14.02 shall instead be deliverable in the amount and type of Reference
Property that a holder of that number of shares of Common Stock would have received in such Merger Event and (III) the Daily VWAP shall be calculated based on the value of a unit of Reference Property that a holder of one share of Common Stock would
have received in such Merger Event. 
 If the Merger Event causes the Common Stock to be converted into, or exchanged for, the right to
receive more than a single type of consideration (determined based in part upon any form of stockholder election), then (i) the Reference Property into which the Notes will be convertible shall be deemed to be (x) the weighted average of
the types and amounts of consideration received by the holders of Common Stock that affirmatively make such an election or (y) if no holders of Common Stock affirmatively make such an election, the types and amounts of consideration actually
received by the holders of Common Stock, and (ii) the unit of Reference Property for purposes of the immediately preceding paragraph shall refer to the consideration referred to in clause (i) attributable to one share of Common Stock. If
the holders of the Common Stock receive only cash in such Merger Event, then for all conversions for which the relevant Conversion Date occurs after the effective date of such Merger Event (A) the

  
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consideration due upon conversion of each $1,000 principal amount of Notes shall be solely cash in an amount equal to the Conversion Rate in effect on the Conversion Date (as may be increased by
any Additional Shares pursuant to Section 14.03), multiplied by the price paid per share of Common Stock in such Merger Event and (B) the Company shall satisfy the Conversion Obligation by paying cash to converting Holders on the third
Business Day immediately following the relevant Conversion Date. The Company, purchasing Person or Successor Company, as the case may be, shall notify Holders, the Trustee and the Conversion Agent (if other than the Trustee) of such weighted average
as soon as practicable after such determination is made. 
 Such supplemental indenture described in the second immediately preceding
paragraph shall provide for anti-dilution and other adjustments that shall be as nearly equivalent as is possible to the adjustments provided for in this Article 14 and the Trustee may conclusively rely on the declaration of the Company of the
equivalence of such adjustments. If, in the case of any Merger Event, the Reference Property includes shares of stock, securities or other property or assets (including cash or any combination thereof) of a Person other than the successor or
purchasing corporation, as the case may be, in such Merger Event, then such supplemental indenture shall also be executed by such other Person and shall contain such additional provisions to protect the interests of the Holders of the Notes as the
Board of Directors shall reasonably consider necessary by reason of the foregoing, including, to the extent required by the Board of Directors and practicable, the provisions providing for the purchase rights set forth in Article 15. 

(b) When the Company, purchasing Person or Successor Company, as the case may be, executes a supplemental indenture pursuant to subsection
(a) of this Section 14.07, the Company, purchasing Person or Successor Company, as the case may be, shall promptly file with the Trustee an Officer’s Certificate briefly stating the reasons therefor, the kind or amount of cash, securities
or property or asset that will comprise a unit of Reference Property after any such Merger Event, any adjustment to be made with respect thereto and that all conditions precedent have been complied with, and shall promptly give notice thereof to all
Holders. The Company, purchasing Person or Successor Company, as the case may be, shall cause notice of the execution of such supplemental indenture to be mailed to each Holder, at its address appearing on the Note Register provided for in this
Indenture, within 20 days after execution thereof. Failure to deliver such notice shall not affect the legality or validity of such supplemental indenture. 

(c) The Company shall not become a party to any Merger Event unless its terms are consistent with this Section 14.07. None of the foregoing
provisions shall affect the right of a holder of Notes to convert its Notes into cash, shares of Common Stock or a combination of cash and shares of Common Stock, as applicable, as set forth in Section 14.01 and Section 14.02 prior to the effective
date of such Merger Event. 
 (d) The above provisions of this Section shall similarly apply to successive Merger Events. 

  
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 Section 14.08. Certain Covenants. (a) The Company covenants that all shares of
Common Stock issued upon conversion of Notes will be fully paid and non-assessable by the Company and free from all taxes, liens and charges with respect to the issue thereof. 

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

  
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The Trustee shall not be responsible for monitoring, inquiring as to, or ascertaining the Company’s compliance with the covenants set forth hereunder. 

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

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

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

then, in each case (unless notice of such event is otherwise required pursuant to another provision of this Indenture), the Company shall cause to be filed
with the Trustee and the Conversion Agent (if other than the Trustee) and to be given to each Holder, as promptly as possible but in any event at least 10 days prior to the applicable date hereinafter specified, a notice stating (i) the date on
which a record is to be taken for the purpose of such action by the Company or one of its Subsidiaries or, if a record is not to be taken, the date as of which the holders of Common Stock of record are to be determined for the purposes of such
action by the Company or one of its Subsidiaries, or (ii) the date on which such Merger Event, dissolution, liquidation or winding-up is expected to become effective or occur, and the date as of which it is expected that holders of Common Stock
of record shall be entitled to exchange their Common Stock for securities or other property deliverable upon such Merger Event, dissolution, liquidation or winding-up. Failure to give such notice, or any defect therein, shall not affect the legality
or validity of such action by the Company or one of its Subsidiaries, Merger Event, dissolution, liquidation or winding-up. 

Section 14.11. Stockholder Rights Plans. If the Company has a stockholder rights plan in effect upon conversion of the Notes, each
share of Common Stock, if any, issued upon such conversion shall be entitled to receive the appropriate number of rights, if any, and the certificates representing the Common Stock issued upon such conversion shall bear such legends, if any, in each
case as may be provided by the terms of any such stockholder rights plan, as the same may be amended from time to time. However, if, prior to any conversion of Notes, the rights have separated from the shares of Common Stock in accordance with the
provisions of the applicable stockholder rights plan so that the Holders would not be entitled to receive any rights in respect of Common Stock, if any, issuable upon conversion of the Notes, the Conversion Rate for the Notes shall be adjusted at
the time of separation as if the Company distributed to all or substantially all holders of the Common Stock Distributed Property as provided in Section 14.04(c), subject to readjustment in the event of the expiration, termination or redemption of
such rights. 
 ARTICLE 15 

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

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

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

(ii) delivery of the Notes, if the Notes are Physical Notes, to the Paying Agent at any time on or after delivery of the
Fundamental Change Repurchase Notice (together with all necessary endorsements for transfer) but on or before the close of business on the Business Day immediately preceding the Fundamental Change Repurchase Date at the Corporate Trust Office of the
Paying Agent, or book-entry transfer of the Notes, if the Notes are Global Notes, in compliance with the procedures of the Depositary, in each case such delivery being a condition to receipt by the Holder of the Fundamental Change Repurchase Price
therefor. 
 The Fundamental Change Repurchase Notice in respect of any Notes to be repurchased shall state: 

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

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

 (iii) that the Notes are to be repurchased by the Company pursuant to the applicable provisions of the Notes and this
Indenture; 

  
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 provided, however, that if the Notes are Global Notes, the Fundamental Change Repurchase Notice
must comply with appropriate Depositary procedures. 
 Notwithstanding anything herein to the contrary, any Holder delivering to the Paying
Agent the Fundamental Change Repurchase Notice contemplated by this Section 15.02 shall have the right to withdraw, in whole or in part, such Fundamental Change Repurchase Notice at any time prior to the close of business on the Business Day
immediately preceding the Fundamental Change Repurchase Date by delivery of a written notice of withdrawal to the Paying Agent in accordance with Section 15.03. 

The Paying Agent shall promptly notify the Company of the receipt by it of any Fundamental Change Repurchase Notice or written notice of
withdrawal thereof. 
 (c) On or before the 20th calendar day after the occurrence of the effective date of a Fundamental Change, the
Company shall provide to all Holders of Notes and the Trustee and the Paying Agent (in the case of a Paying Agent other than the Trustee) a notice (the “Fundamental Change Company Notice”) of the occurrence of the effective date of
the Fundamental Change and of the repurchase right at the option of the Holders arising as a result thereof. In the case of Physical Notes, such notice shall be by first class mail or, in the case of Global Notes, such notice shall be delivered in
accordance with the applicable procedures of the Depositary. Concurrently with providing such notice, the Company shall issue a press release and publish such information on the Company’s website or through such other public medium as the
Company may use at that time. Each Fundamental Change Company Notice shall specify: 
 (i) the events causing the Fundamental
Change; 
 (ii) the date of the Fundamental Change; 

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

(iv) the Fundamental Change Repurchase Price; 

(v) the Fundamental Change Repurchase Date; 

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

(vii) if applicable, the Conversion Rate and any adjustments to the Conversion Rate; 

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

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

  
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 No failure of the Company to give the foregoing notices and no defect therein shall limit the
Holders’ repurchase rights or affect the validity of the proceedings for the repurchase of the Notes pursuant to this Section 15.02. 

At the Company’s request, the Trustee shall give such notice in the Company’s name and at the Company’s expense;
provided, however, that, in all cases, the text of such Fundamental Change Company Notice shall be prepared by the Company. 

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

Section 15.03. Withdrawal of Fundamental Change Repurchase Notice. (a) A Fundamental Change Repurchase Notice may be
withdrawn (in whole or in part) by means of a written notice of withdrawal delivered to the Corporate Trust Office of the Paying Agent in accordance with this Section 15.03 at any time prior to the close of business on the Business Day immediately
preceding the Fundamental Change Repurchase Date, specifying: 
 (i) the principal amount of the Notes with respect to which
such notice of withdrawal is being submitted, which amount must be in principal amounts of $1,000 or an integral multiple of $1,000, 

(ii) if Physical Notes have been issued, the certificate number of the Note in respect of which such notice of withdrawal is
being submitted, and 
 (iii) the principal amount, if any, of such Note that remains subject to the original Fundamental
Change Repurchase Notice, which portion must be in principal amounts of $1,000 or an integral multiple of $1,000; 
 provided, however, that
if the Notes are Global Notes, the notice must comply with appropriate procedures of the Depositary. 
 Section 15.04. Deposit of
Fundamental Change Repurchase Price. (a) The Company will deposit with the Trustee (or other Paying Agent appointed by the Company, or if the Company is acting as its own Paying Agent, set aside, segregate and hold in trust as provided in
Section 4.04) on or prior to 11:00 a.m., New York City time, on the Fundamental Change Repurchase Date an amount of money sufficient to repurchase all of the Notes to be repurchased at the appropriate Fundamental Change Repurchase Price. Subject to
receipt of funds and/or 

  
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Notes by the Trustee (or other Paying Agent appointed by the Company), payment for Notes surrendered for repurchase (and not withdrawn prior to the close of business on the Business Day
immediately preceding the Fundamental Change Repurchase Date) will be made on the later of (i) the Fundamental Change Repurchase Date (provided the Holder has satisfied the conditions in Section 15.02) and (ii) the time of
book-entry transfer or the delivery of such Note to the Trustee (or other Paying Agent appointed by the Company) by the Holder thereof in the manner required by Section 15.02 by mailing checks for the amount payable to the Holders of such Notes
entitled thereto as they shall appear in the Note Register; provided, however, that payments to the Depositary shall be made by wire transfer of immediately available funds to the account of the Depositary or its nominee. The Trustee
shall, promptly after such payment and upon written demand by the Company, return to the Company any funds in excess of the Fundamental Change Repurchase Price. 

(b) If by 11:00 a.m. New York City time, on the Fundamental Change Repurchase Date, the Trustee (or other Paying Agent appointed by the
Company) holds money sufficient to make payment on all the Notes or portions thereof that are to be repurchased on such Fundamental Change Repurchase Date, then, with respect to the Notes that have been properly surrendered for repurchase and have
not been validly withdrawn, (i) such Notes will cease to be outstanding, (ii) interest will cease to accrue on such Notes (whether or not book-entry transfer of the Notes has been made or the Notes have been delivered to the Trustee or
Paying Agent) and (iii) all other rights of the Holders of such Notes will terminate (other than the right to receive the Fundamental Change Repurchase Price). 

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

Section 15.05. Covenant to Comply with Applicable Laws Upon Repurchase of Notes. In connection with any repurchase offer pursuant
to a Fundamental Change Repurchase Notice, the Company will, if required: 
 (a) comply with the provisions of Rule 13e-4, Rule 14e-1 and
any other tender offer rules under the Exchange Act that may then be applicable; 
 (b) file a Schedule TO or any other required schedule
under the Exchange Act; and 
 (c) otherwise comply with all federal and state securities laws in connection with any offer by the Company
to repurchase the Notes; 
 in each case, so as to permit the rights and obligations under this Article 15 to be exercised in the time and in the manner
specified in this Article 15. 

  
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 ARTICLE 16 

NO REDEMPTION 

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

MISCELLANEOUS PROVISIONS 

Section 17.01. Provisions Binding on Company’s Successors. All the covenants, stipulations, promises and agreements of the
Company contained in this Indenture shall bind its successors and assigns whether so expressed or not. 
 Section 17.02. Official
Acts by Successor Corporation. Any act or proceeding by any provision of this Indenture authorized or required to be done or performed by any board, committee or Officer of the Company shall and may be done and performed with like force and
effect by the like board, committee or officer of any corporation or other entity that shall at the time be the lawful sole successor of the Company. 

Section 17.03. Addresses for Notices, Etc. Any notice or demand that by any provision of this Indenture is required or permitted
to be given or served by the Trustee or by the Holders on the Company shall be deemed to have been sufficiently given or made, for all purposes if given or served by being deposited postage prepaid by registered or certified mail in a post office
letter box addressed (until another address is filed by the Company with the Trustee) to Horizon Pharma, Inc., 520 Lake Cook Road, Suite 520, Deerfield, Illinois 60015, Attention: General Counsel. Any notice, direction, request or demand hereunder
to or upon the Trustee shall be deemed to have been sufficiently given or made, for all purposes, if given or served by being deposited postage prepaid by registered or certified mail in a post office letter box addressed to the Corporate Trust
Office. 
 The Trustee, by notice to the Company, may designate additional or different addresses for subsequent notices or communications.

 Any notice or communication sent to a Holder shall be sent electronically in PDF format (in the case of a Global Note) or mailed to it by
first class mail, postage prepaid, at its address as it appears on the Note Register and shall be sufficiently given to it if so mailed within the time prescribed. 

Failure to send a notice or communication to a Holder or any defect in it shall not affect its sufficiency with respect to other Holders. If a
notice or communication is sent in the manner provided above, it is duly given, whether or not the addressee receives it. 
 In case by
reason of the suspension of regular mail service or by reason of any other cause it shall be impracticable to give such notice to Holders by mail, then such notification as shall be made with the approval of the Trustee shall constitute a sufficient
notification for every purpose hereunder. 

  
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 Notwithstanding any other provision of this Indenture or any Note, where this Indenture or any
Note provides for notice of any event (including any notice of redemption or repurchase) to a Holder (whether by mail or otherwise), such notice shall be sufficiently given (in the case of a Global Note) if given to the Depositary (or its designee)
pursuant to the standing instructions from the Depositary or its designee, including by electronic mail in accordance with accepted practices or procedures at the Depositary. 

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

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

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

Section 17.05. Evidence of Compliance with Conditions Precedent; Certificates and Opinions of Counsel to Trustee. Upon any
application or demand by the Company to the Trustee to take any action under any of the provisions of this Indenture, the Company shall, if requested by the Trustee, furnish to the Trustee an Officer’s Certificate stating that such action is
permitted by the terms of this Indenture; provided, that no Opinion of Counsel shall be required to be delivered in connection with the initial issuance of Notes dated as of the date hereof under the Indenture. 

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

  
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and (d) a statement as to whether or not, in the judgment of such person, such action is permitted by this Indenture. 

Notwithstanding anything to the contrary in this Section 17.05, if any provision in this Indenture specifically provides that the Trustee
shall or may receive an Opinion of Counsel in connection with any action to be taken by the Trustee or the Company hereunder, the Trustee shall be entitled to, or entitled to request, such Opinion of Counsel. 

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

Section 17.08. Benefits of Indenture. Nothing in this Indenture or in the Notes, expressed or implied, shall give to any Person,
other than the Holders, the parties hereto, any Paying Agent, any Conversion Agent, any authenticating agent, any Note Registrar and their successors hereunder, any benefit or any legal or equitable right, remedy or claim under this Indenture. 

Section 17.09. Table of Contents, Headings, Etc. The table of contents and the titles and headings of the articles and sections of
this Indenture have been inserted for convenience of reference only, are not to be considered a part hereof, and shall in no way modify or restrict any of the terms or provisions hereof. 

Section 17.10. Authenticating Agent. The Trustee may appoint an authenticating agent that shall be authorized to act on its behalf
and subject to its direction in the authentication and delivery of Notes in connection with the original issuance thereof and transfers and exchanges of Notes hereunder, including under Section 2.04, Section 2.05, Section 2.06, Section 2.07, Section
10.04 and Section 15.04 as fully to all intents and purposes as though the authenticating agent had been expressly authorized by this Indenture and those Sections to authenticate and deliver Notes. For all purposes of this Indenture, the
authentication and delivery of Notes by the authenticating agent shall be deemed to be authentication and delivery of such Notes “by the Trustee” and a certificate of authentication executed on behalf of the Trustee by an authenticating
agent shall be deemed to satisfy any requirement hereunder or in the Notes for the Trustee’s certificate of authentication. Such authenticating agent shall at all times be a Person eligible to serve as trustee hereunder pursuant to Section
7.08. 
 Any corporation or other entity into which any authenticating agent may be merged or converted or with which it may be
consolidated, or any corporation or other entity resulting from any merger, consolidation or conversion to which any authenticating agent shall be a party, or any corporation or other entity succeeding to the corporate trust business of any
authenticating 

  
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agent, shall be the successor of the authenticating agent hereunder, if such successor corporation or other entity is otherwise eligible under this Section 17.10, without the execution or filing
of any paper or any further act on the part of the parties hereto or the authenticating agent or such successor corporation or other entity. 

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

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

			
	  
	 	 ,

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

 

			
	 By:
	 	  

	Authorized Officer

 Section 17.11. Execution in Counterparts. This Indenture may be executed in any number of
counterparts, each of which shall be an original, but such counterparts shall together constitute but one and the same instrument. The exchange of copies of this Indenture and of signature pages by facsimile or PDF transmission shall constitute
effective execution and delivery of this Indenture as to the parties hereto and may be used in lieu of the original Indenture for all purposes. Signatures of the parties hereto transmitted by facsimile or PDF shall be deemed to be their original
signatures for all purposes. 
 Section 17.12. Severability. In the event any provision of this Indenture or in the Notes shall
be invalid, illegal or unenforceable, then (to the extent permitted by law) the validity, legality or enforceability of the remaining provisions shall not in any way be affected or impaired. 

Section 17.13. Waiver of Jury Trial. EACH OF THE COMPANY AND THE TRUSTEE HEREBY IRREVOCABLY WAIVES, TO THE FULLEST EXTENT
PERMITTED 

  
 83 

 
BY APPLICABLE LAW, ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY LEGAL PROCEEDING ARISING OUT OF OR RELATING TO THIS INDENTURE, THE NOTES OR THE TRANSACTIONS CONTEMPLATED HEREBY. 

Section 17.14. Force Majeure. In no event shall the Trustee be responsible or liable for any failure or delay in the performance
of its obligations hereunder arising out of or caused by, directly or indirectly, forces beyond its control, including, without limitation, strikes, work stoppages, accidents, acts of war or terrorism, civil or military disturbances, nuclear or
natural catastrophes or acts of God, and interruptions, loss or malfunctions of utilities, communications or computer (software and hardware) services; it being understood that the Trustee shall use reasonable efforts that are consistent with
accepted practices in the banking industry to resume performance as soon as practicable under the circumstances. 
 Section 17.15.
Calculations. Except as otherwise provided herein, the Company shall be responsible for making all calculations called for under the Notes. These calculations include, but are not limited to, determinations of the Last Reported Sale Prices of
the Common Stock, the Daily VWAPs, the Daily Conversion Values, the Daily Settlement Amounts, the Conversion Share Cap, the Aggregate Share Cap, accrued interest payable on the Notes and the Conversion Rate of the Notes. The Company shall make all
these calculations in good faith and, absent manifest error, the Company’s calculations shall be final and binding on Holders of Notes. The Company shall provide a schedule of its calculations to each of the Trustee and the Conversion Agent.
Each of the Trustee and Conversion Agent is entitled to rely conclusively upon the accuracy of the Company’s calculations and shall have no duty to independently verify such calculations. The Trustee will forward the Company’s calculations
to any Holder of Notes upon the request of that Holder at the sole cost and expense of the Company. 
 Section 17.16. USA PATRIOT
Act. The parties hereto acknowledge that in accordance with Section 326 of the USA PATRIOT Act, the Trustee, like all financial institutions and in order to help fight the funding of terrorism and money laundering, is required to obtain,
verify, and record information that identifies each person or legal entity that establishes a relationship or opens an account with the Trustee. The parties to this Indenture agree that they will provide the Trustee with such information as it may
request in order for the Trustee to satisfy the requirements of the USA PATRIOT Act. 
 [Remainder of page intentionally left blank]

  
 84 

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

			
	HORIZON PHARMA, INC.
		
	By:	 	 /s/ Robert J. De Vaere

	Name:	 	Robert J. De Vaere
	Title:	 	 Executive Vice President and
 Chief Financial
Officer

  

			
	 U.S. BANK NATIONAL ASSOCIATION, as Trustee

		
	By:	 	 /s/ Donald T. Hurrelbrink

	Name:	 	Donald T. Hurrelbrink
	 Title:
	 	Vice President

 EXHIBIT A 

[FORM OF FACE OF NOTE] 
 [INCLUDE FOLLOWING
LEGEND IF A GLOBAL NOTE] 
 [UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW
YORK CORPORATION (“DTC”), TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF DTC (AND ANY PAYMENT HEREUNDER IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS
WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN. 
 NO AFFILIATE (AS DEFINED IN RULE 144 UNDER
THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”)) OF THE COMPANY OR PERSON THAT HAS BEEN AN AFFILIATE (AS DEFINED IN RULE 144 UNDER THE SECURITIES ACT) OF THE COMPANY DURING THE THREE IMMEDIATELY PRECEDING MONTHS MAY RESELL
THIS NOTE OR A BENEFICIAL INTEREST HEREIN.] 
 [INCLUDE FOLLOWING LEGEND IF A RESTRICTED SECURITY] 

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

(1) REPRESENTS THAT IT AND ANY ACCOUNT FOR WHICH IT IS ACTING IS (A) A “QUALIFIED INSTITUTIONAL BUYER” (WITHIN
THE MEANING OF RULE 144A UNDER THE SECURITIES ACT) AND THAT IT EXERCISES SOLE INVESTMENT DISCRETION WITH RESPECT TO EACH SUCH ACCOUNT, OR (B) IT IS AN “ACCREDITED INVESTOR” WITHIN THE MEANING OF RULE 501 UNDER THE SECURITIES ACT, AND

 (2) AGREES FOR THE BENEFIT OF HORIZON PHARMA, INC. (THE “COMPANY”) THAT IT WILL NOT OFFER, SELL, PLEDGE OR
OTHERWISE TRANSFER THIS SECURITY OR ANY BENEFICIAL INTEREST HEREIN PRIOR TO THE DATE THAT IS THE LATER OF (X) ONE YEAR AFTER THE LAST ORIGINAL ISSUE DATE HEREOF OR SUCH SHORTER PERIOD OF TIME AS

  
 A-1 

 
PERMITTED BY RULE 144 UNDER THE SECURITIES ACT OR ANY SUCCESSOR PROVISION THERETO AND (Y) SUCH LATER DATE, IF ANY, AS MAY BE REQUIRED BY APPLICABLE LAW, EXCEPT: 

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

(B) PURSUANT TO A REGISTRATION STATEMENT WHICH HAS BECOME EFFECTIVE UNDER THE SECURITIES ACT, OR 

(C) TO A QUALIFIED INSTITUTIONAL BUYER IN COMPLIANCE WITH RULE 144A UNDER THE SECURITIES ACT, OR 

(D) PURSUANT TO AN EXEMPTION FROM REGISTRATION PROVIDED BY RULE 144 UNDER THE SECURITIES ACT OR ANY OTHER AVAILABLE EXEMPTION
FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT. 
 PRIOR TO THE REGISTRATION OF ANY TRANSFER IN ACCORDANCE WITH CLAUSE
(2)(D) ABOVE, THE COMPANY AND THE TRUSTEE RESERVE THE RIGHT TO REQUIRE THE DELIVERY OF SUCH LEGAL OPINIONS, CERTIFICATIONS OR OTHER EVIDENCE AS MAY REASONABLY BE REQUIRED IN ORDER TO DETERMINE THAT THE PROPOSED TRANSFER IS BEING MADE IN
COMPLIANCE WITH THE SECURITIES ACT AND APPLICABLE STATE SECURITIES LAWS. NO REPRESENTATION IS MADE AS TO THE AVAILABILITY OF ANY EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT.] 

[INCLUDE FOLLOWING LEGEND IF AN AFFILIATE NOTE] 

[NO AFFILIATE (AS DEFINED IN RULE 144 UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”)) OF THE COMPANY OR PERSON
THAT HAS BEEN AN AFFILIATE (AS DEFINED IN RULE 144 UNDER THE SECURITIES ACT) OF THE COMPANY DURING THE THREE IMMEDIATELY PRECEDING MONTHS MAY OFFER, SELL, PLEDGE OR OTHERWISE TRANSFER THIS SECURITY OR A BENEFICIAL INTEREST HEREIN UNLESS PURSUANT TO
A REGISTRATION STATEMENT WHICH HAS BECOME EFFECTIVE UNDER THE SECURITIES ACT OR PURSUANT TO AN EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT IN A TRANSACTION THAT RESULTS IN SUCH SECURITY OR COMMON STOCK, AS THE CASE MAY BE, NO
LONGER BEING A “RESTRICTED SECURITY” (AS DEFINED IN RULE 144 UNDER THE SECURITIES ACT).] 
 Horizon Pharma, Inc. 

5.00% Convertible Senior Note due 2018 
  

					
	 No. [                    ]
	  	Initially $	[        	] 

  
 A-2 

			
	CUSIP No.	  	[                    ] (144A)
		
		  	[                    ] (Unrestricted)

 Horizon Pharma, Inc., a corporation duly organized and validly existing under the laws of the State of
Delaware (the “Company,” which term includes any successor corporation or other entity under the Indenture referred to on the reverse hereof), for value received hereby promises to pay to
[                    ] [include “CEDE & CO.” for Global Note], or registered assigns, the principal sum [as set forth in the
“Schedule of Exchanges of Notes” attached hereto,]1 [of $[        ],2] which amount, taken
together with the principal amounts of all other outstanding Notes, shall not, unless permitted by the Indenture, exceed $150,000,000 in aggregate at any time, in accordance with the rules and procedures of the Depositary, on November 15, 2018,
and interest thereon as set forth below. 
 This Note shall bear interest at the rate of 5.00% per year from November 22, 2018, or
from the most recent date to which interest had been paid or provided for to, but excluding, the next scheduled Interest Payment Date until November 15, 2018. Accrued interest on this Note shall be computed on the basis of a 360-day year
composed of twelve 30-day months. Interest is payable semi-annually in arrears on each May 15 and November 15, commencing on May 15, 2014, to Holders of record at the close of business on the preceding May 1 and November 1
(whether or not such day is a Business Day), respectively. Additional Interest will be payable as set forth in Section 4.06(d), Section 4.06(e) and Section 6.03 of the within-mentioned Indenture, and any reference to interest on, or
in respect of, any Note therein shall be deemed to include Additional Interest if, in such context, Additional Interest is, was or would be payable pursuant to any of such Section 4.06(d), Section 4.06(e) or Section 6.03, and any
express mention of the payment of Additional Interest in any provision therein shall not be construed as excluding Additional Interest in those provisions thereof where such express mention is not made. 

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

The Company shall pay or cause the Paying Agent to pay the principal of and interest (i) on any Physical Notes (A) to Holders
holding Physical Notes having an aggregate principal amount of $5,000,000 or less, by check mailed to the Holders of these Notes at their address as it appears in the Note Register and (B) to Holders holding Physical Notes having an aggregate
principal amount of more than $5,000,000, either by check mailed to each Holder or, upon application by such a Holder to the Note Registrar not later than the relevant Regular Record Date, by wire transfer in immediately available funds to that
Holder’s account within the United States, which application shall remain in effect until the Holder notifies, in writing, the Note 
  

 

	1 	Include for Global Note. 

	2 	 Include for Physical Note. 

  
 A-3 

 
Registrar to the contrary or (ii) if and so long as such Note is a Global Note, in immediately available funds to the Depositary or its nominee, as the case may be, as the registered Holder
of such Note. Notwithstanding anything to the contrary herein, the Company may pay interest at its option to any Holder by wire transfer in immediately available funds to that Holder’s account, as specified by such Holder, within the United
States. As provided in and subject to the provisions of the Indenture, the Company shall pay or cause the Paying Agent to pay the principal of any Notes (other than Notes that are Global Notes) at the office or agency designated by the Company for
that purpose. The Company has initially designated the Trustee as its Paying Agent and Note Registrar in respect of the Notes and its agency in Saint Paul, Minnesota, as a place where Notes may be presented for payment or for registration of
transfer and exchange. 
 Reference is made to the further provisions of this Note set forth on the reverse hereof, including, without
limitation, provisions giving the Holder of this Note the right to convert this Note into cash, shares of Common Stock or a combination of cash and shares of Common Stock, as applicable, on the terms and subject to the limitations set forth in the
Indenture. Such further provisions shall for all purposes have the same effect as though fully set forth at this place. 
 This Note, and
any claim, controversy or dispute arising under or related to this Note, shall be construed in accordance with and governed by the laws of the State of New York (without regard to the conflicts of laws provisions thereof). 

In the case of any conflict between this Note and the Indenture, the provisions of the Indenture shall control and govern. 

This Note shall not be valid or become obligatory for any purpose until the certificate of authentication hereon shall have been signed
manually or by facsimile by the Trustee or a duly authorized authenticating agent under the Indenture. 
 [Remainder of page intentionally
left blank] 
 IN WITNESS WHEREOF, the Company has caused this Note to be duly executed. 

 

			
	HORIZON PHARMA, INC.
		
	By:	 	  

	Name:	 	
	Title:	 	

 Dated: 
 TRUSTEE’S
CERTIFICATE OF AUTHENTICATION 
 U.S. BANK NATIONAL ASSOCIATION 

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

  
 A-4 

			
	By:	 	  

		 	Authorized Officer

 [FORM OF REVERSE OF NOTE] 

Horizon Pharma, Inc. 
 5.00%
Convertible Senior Note due 2018 
 This Note is one of a duly authorized issue of Notes of the Company, designated as its 5.00% Convertible
Senior Notes due 2018 (the “Notes”), limited to the aggregate principal amount of $150,000,000 all issued or to be issued under and pursuant to an Indenture dated as of November 22, 2018 (the “Indenture”),
between the Company and U.S. Bank National Association (the “Trustee”), to which Indenture and all indentures supplemental thereto reference is hereby made for a description of the rights, limitations of rights, obligations, duties
and immunities thereunder of the Trustee, the Company and the Holders of the Notes. Additional Notes may be issued in an unlimited aggregate principal amount, subject to certain conditions specified in the Indenture. Capitalized terms used in this
Note and not defined in this Note shall have the respective meanings set forth in the Indenture. 
 In case certain Events of Default shall
have occurred and be continuing, the principal of, and interest on, all Notes may be declared, by either the Trustee or Holders of at least 25% in aggregate principal amount of Notes then outstanding, and upon said declaration shall become, due and
payable, in the manner, with the effect and subject to the conditions and certain exceptions set forth in the Indenture. 
 Subject to the
terms and conditions of the Indenture, the Company will make all payments and deliveries in respect of the Fundamental Change Repurchase Price on the Fundamental Change Repurchase Date and the principal amount on the Maturity Date, as the case may
be, to the Holder who surrenders a Note to a Paying Agent to collect such payments in respect of the Note. The Company will pay cash amounts in money of the United States that at the time of payment is legal tender for payment of public and private
debts. 
 The Indenture contains provisions permitting the Company and the Trustee in certain circumstances, without the consent of the
Holders of the Notes, and in certain other circumstances, with the consent of the Holders of not less than a majority in aggregate principal amount of the Notes at the time outstanding, evidenced as in the Indenture provided, to execute supplemental
indentures modifying the terms of the Indenture and the Notes as described therein. It is also provided in the Indenture that, subject to certain exceptions, the Holders of a majority in aggregate principal amount of the Notes at the time
outstanding may on behalf of the Holders of all of the Notes waive any past Default or Event of Default under the Indenture and its consequences. 

No reference herein to the Indenture and no provision of this Note or of the Indenture shall alter or impair the obligation of the Company,
which is absolute and unconditional, to pay or deliver, as the case may be, the principal (including the Fundamental Change Repurchase Price, if applicable) of, accrued and unpaid interest on, and the consideration due upon

  
 A-5 

 
conversion of, this Note at the place, at the respective times, at the rate and in the lawful money herein prescribed. 

The Notes are issuable in registered form without coupons in denominations of $1,000 principal amount and integral multiples thereof. At the
office or agency of the Company referred to on the face hereof, and in the manner and subject to the limitations provided in the Indenture, Notes may be exchanged for a like aggregate principal amount of Notes of other authorized denominations,
without payment of any service charge but, if required by the Company or Trustee, with payment of a sum sufficient to cover any transfer or similar tax that may be imposed in connection therewith as a result of the name of the Holder of the new
Notes issued upon such exchange of Notes being different from the name of the Holder of the old Notes surrendered for such exchange. 
 The
Notes are not subject to redemption through the operation of any sinking fund or otherwise. 
 Upon the occurrence of a Fundamental Change,
the Holder has the right, at such Holder’s option, to require the Company to repurchase for cash all of such Holder’s Notes or any portion thereof (in principal amounts of $1,000 or integral multiples thereof) on the Fundamental Change
Repurchase Date at a price equal to the Fundamental Change Repurchase Price. 
 Subject to the provisions of the Indenture, the Holder
hereof has the right, at its option, during certain periods and upon the occurrence of certain conditions specified in the Indenture, prior to the close of business on the second Scheduled Trading Day immediately preceding the Maturity Date, to
convert any Notes or portion thereof that is $1,000 or an integral multiple thereof, into cash, shares of Common Stock or a combination of cash and shares of Common Stock, as applicable, at the Conversion Rate specified in the Indenture, as adjusted
from time to time as provided in the Indenture. 
 ABBREVIATIONS 

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

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

  
 A-6 

 [Include for Global Note] 

SCHEDULE OF EXCHANGES OF NOTES 

Horizon Pharma, Inc. 
 5.00%
Convertible Senior Notes due 2018 
 The initial principal amount of this Global Note is
[                    ] DOLLARS ($[        ]). The following increases or decreases in this Global Note have
been made: 
  

									
	 Date of exchange
	 	 Amount of

decrease in
 principal amount

of this Global Note
	 	 Amount of

increase in
 principal amount

of this Global Note
	 	 Principal amount

of this Global Note
 following
such
 decrease or

increase
	 	 Signature of

authorized
 signatory of

Trustee or
 Custodian

		 		 		 		 	
		 		 		 		 	
		 		 		 		 	
		 		 		 		 	
		 		 		 		 	
		 		 		 		 	
		 		 		 		 	
		 		 		 		 	
		 		 		 		 	
		 		 		 		 	
		 		 		 		 	
		 		 		 		 	
		 		 		 		 	
		 		 		 		 	
		 		 		 		 	
		 		 		 		 	
		 		 		 		 	
		 		 		 		 	
		 		 		 		 	
		 		 		 		 	
		 		 		 		 	
		 		 		 		 	

  
 A-7 

 ATTACHMENT 1 

[FORM OF NOTICE OF CONVERSION] 
 To: U.S. Bank
National Association 
 60 Livingston Avenue 
 EP-MN-WS3C 

Saint Paul, MN 55107-1419 
 Fax No.: (651) 466-7430 

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

 

							
	Dated:	 	 	 	  
	 	
				
		 		 	  
	 	
		 		 	Signature(s)	 	
			
	  
	 		 	
			
	 Signature Guarantee
 Signature(s)
must be guaranteed by an eligible Guarantor Institution (banks, stock brokers, savings and loan associations and credit unions) with membership in an approved signature guarantee medallion program pursuant to Securities and Exchange Commission Rule
17Ad-15 if shares
	 		 	

  
 1 

					
	of Common Stock are to be issued, or Notes are to be delivered, other than to and in the name of the registered holder.	  		  	
			
	Fill in for registration of shares if to be issued, and Notes if to be delivered, other than to and in the name of the registered holder:	  		  	
			
	  
	  		  	
	(Name)	  		  	
			
	  
	  		  	
	(Street Address)	  		  	
			
	  
	  		  	
	(City, State and Zip Code)	  		  	
			
	Please print name and address	  		  	
		
		  	Principal amount to be converted (if less than all): $        ,000
		
		  	NOTICE: The above signature(s) of the Holder(s) hereof must correspond with the name as written upon the face of the Note in every particular without alteration or enlargement or any change whatever.
			
		  	  
	  	
		  	Social Security or Other Taxpayer Identification Number	  	

  
 2 

 ATTACHMENT 2 

[FORM OF FUNDAMENTAL CHANGE REPURCHASE NOTICE] 

To: U.S. Bank National Association 
 60 Livingston Avenue 

EP-MN-WS3C 
 Saint Paul, MN 55107-1419 

Fax No.: (651) 466-7430 
 Attn: Corporate Trust Services 

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

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

Dated:
                                        
                     
  

	
	  

	Signature(s)
	
	  

	 Social Security or Other Taxpayer

Identification Number

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

  
 1 

 ATTACHMENT 3 

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

 ̈         To
[            ] or a subsidiary thereof; or 

 ̈        Pursuant to a registration statement that has become or been
declared effective under the Securities Act of 1933, as amended; or 

 ̈        Pursuant to and in compliance with Rule 144A under the
Securities Act of 1933, as amended; or 
  ̈        Pursuant to and
in compliance with Rule 144 under the Securities Act of 1933, as amended, or any other available exemption from the registration requirements of the Securities Act of 1933, as amended. 

 ̈        In the case of any Affiliate Note, for a beneficial interest
in a Global Note or to a Person who takes delivery thereof in the form of a beneficial interest in a Global Note, pursuant to and in compliance with Rule 144 under the Securities Act of 1933, as amended or pursuant to an effective registration
statement covering the resale of such Affiliate Note. 
  

	
	Dated:   
	
	  

	
	  

	Signature(s)
	
	  

	Signature Guarantee

  
 1 

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

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

  
 2

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