Document:

Amendment No. 2 to Non-Qualified Supplemental Deferred Compensation Plan

 Exhibit 10.2 
 ULTRATECH, INC. 
 NON-QUALIFIED SUPPLEMENTAL DEFERRED COMPENSATION PLAN

 PLAN AMENDMENT NO. 2 
 The Ultratech, Inc. Non-Qualified Supplemental Deferred Compensation Plan, as amended and restated effective as of January 1, 2005 and subsequently amended effective as of January 1, 2005 (the
“Plan”), in order to maintain the Plan’s compliance with the documentary requirements of Section 409A of the Internal Revenue Code of 1986, as amended (the “Code”), and the final Treasury
Regulations thereunder, ), is hereby further amended, effective as of January 1, 2011, as follows:. 
 1. Section 2.30
of the Plan is hereby amended in its entirety to read as follows, thereby correcting a typographical error in such section: 

“Termination Date” means: 
 (i) with respect to an Employee Participant, the Participant’s separation from service (within the meaning of Section 409A of the Code and the regulations, notices and other guidance thereunder,
including death or Disability) with the Employer and any subsidiary or affiliate of the Employer as defined in Sections 414(b) and (c) of the Code, except that in applying Sections 1563(1), (2) and (3) of the Code for purposes of
determining the controlled group of corporations under Section 414(b), the phrase “at least 50 percent” shall be used instead of “at least 80 percent” each place the latter phrase appears in such sections, and in applying
Section 1.414(c)-2 of the Treasury Regulations for purposes of determining trades or businesses that are under common control for purposes of Section 414(c), the phrase “at least 50 percent” shall be used instead of “at
least 80 percent” each place the latter phrase appears in Section 1.4.14(c)-2 of the Treasury Regulations. 
 (ii)
with respect to a Board Member Participant, the Participant’s resignation or removal from the Board (for any reason, including death or Disability); and 
 (iii) with respect to any Other Service Provider, the expiration of all agreements to provide services to the Employer (for any reason, including death or Disability). 

The date that an Employee’s, Board Member’s, or Other Service Provider’s performance of services for all the Employers is
reduced to a level 20% or less than the average level of services performed in the preceding 36-month period shall be considered a Termination Date, and the performance of services at a level of 50% or more of the average level of services performed
in the preceding 36-month period shall not be considered a Termination Date, based on the parties’ reasonable expectations as of the applicable date. If a Participant is both a Board Member Participant and an Employee Participant,
“Termination Date” means, with respect to Compensation earned for services as an Employee, the date the Participant satisfies criteria (i) above and means, with respect to Compensation earned for services as a Board member, the date
the Participant satisfies criteria (ii) above. 
 2. The first paragraph of Section 9.1 of the Plan is amended in its
entirety to read as follows: 
 The Participant’s vested Account balances shall be distributed to the Participant in the
form of a single lump sum payment, or, if subsection 9.2 applies, in the form of installment payments as permitted by the Employer in the Adoption Agreement. Subject to subsection 9.3 hereof, distribution of the Participant’s Accounts shall be
made within the 90-day period following his or her Termination Date; provided, however, that the Employer shall have sole discretion to determine when during such 90-day period the distribution shall be made or commence. In the event of the
Participant’s death prior to the distribution of the entire amount of his vested Account balances, whether the Participant’s death occurs before or after a distribution has commenced from those Account balances, the entire amount of those
unpaid vested Account balances shall be distributed in a single lump sum payment to the Participant’s Beneficiary as determined in accordance with Section 9.5. Subject to subsection 9.3 hereof, distribution of a deceased Participant’s
Accounts shall be made within the 90-day period following the date of his death, but in no event later than the later of (i) the close of the calendar year in which the Participant’s death occurs or (ii) the fifteenth day of the third
calendar month following the date of the Participant’s death. Notwithstanding any provision of the Plan to the contrary, for purposes of this subsection, a Participant’s Accounts shall be valued as of a Valuation Date as soon as
administratively feasible preceding the date such distribution is made, in accordance with rules established by the Administrator. 

 3. Subparagraph (b) of Section 9.2 of the Plan is hereby amended in its entirety
to read as follows: 
 (b) Installment Payments. The first installment payment shall be within the 90-day period
following the Participant’s Termination Date; provided, however, that the Employer shall have the sole discretion to determine when during such 90-day period the first installment payment shall be made. Succeeding payments shall be made on or
after January 1 of each succeeding calendar year, but in no event later than the last day of each such succeeding calendar year. The amount to be distributed in each installment payment shall be determined by dividing the value of the
Participant’s Accounts as of a Valuation Date preceding the date of each distribution by the number of installment payments remaining to be made, in accordance with rules established by the Administrator. In the event of the death of the
Participant prior to the full payment of his Account in accordance with the elected installment distribution, the entire unpaid vested balance of that Account will be paid to the Participant’s Beneficiary in a single lump sum distribution
within the 90-day period following the date of the Participant’s death, but in no event later than the later of (i) the close of the calendar year in which the Participant’s death occurs or (ii) the fifteenth day of the third
calendar month following the date of the Participant’s death. 
 4. The final paragraph previously added to
Section 9.10 of the Plan is hereby amended in its entirety to read as follows: 
 The supplemental distribution under this
Section 9.10 shall be made in the form of a single lump payment to the Participant’s Beneficiary within the 90-day period following the date of the Participant’s death, but in no event later than the later of (i) the close of the
calendar year in which the Participant’s death occurs or (ii) the fifteenth day of the third calendar month following the date of the Participant’s death. 
 5. Except as modified by this Plan Amendment No. 2, all the terms and provisions of the Plan (as amended and restated effective as of January 1, 2005 and as subsequently amended by Plan
Amendment No. 1) shall continue in full force and effect. 
 IN WITNESS WHEREOF, Ultratech, Inc. has caused this
Plan Amendment to be executed by its duly-authorized officer on this      day of             , 2011. 

 

			
	ULTRATECH, INC.
		
	By:	 	  

		 	      Bruce R. Wright
		
	Title:	 	Senior VP, Finance and Chief Financial OfficerIndenture

 Exhibit 4.1 
 GREAT LAKES DREDGE & DOCK CORPORATION 
 as Issuer, 

and 
 ANY
GUARANTORS PARTY HERETO, 
 as Guarantors 
 $250,000,000 
 7.375% Senior Notes due 2019 

 
  

INDENTURE 
 Dated
as of January 28, 2011 
  
  

Wells Fargo Bank, National Association, 
 as Trustee 

 CROSS-REFERENCE TABLE 

 

					
	 TIA Section Reference
	  	Indenture Section
	310	 	 (a)(1)
	  	7.10
		 	 (a)(2)
	  	7.10
		 	 (a)(3)
	  	N.A.
		 	 (a)(4)
	  	N.A.
		 	 (a)(5)
	  	7.10
		 	 (b)
	  	7.08, 7.10
	311	 	 (a)
	  	7.11
		 	 (b)
	  	7.11
	312	 	 (a)
	  	2.05
		 	 (b)
	  	12.03
		 	 (c)
	  	12.03
	313	 	 (a)
	  	7.06
		 	 (b)(1)
	  	N.A.
		 	 (b)(2)
	  	7.06, 7.07
		 	 (c)
	  	7.06, 12.02
		 	 (d)
	  	7.06
	314	 	 (a)
	  	4.03, 4.04, 12.02
		 	 (b)
	  	N.A.
		 	 (c)(1)
	  	12.04
		 	 (c)(2)
	  	N.A.
		 	 (c)(3)
	  	N.A.
		 	 (d)
	  	N.A.
		 	 (e)
	  	12.05
	315	 	 (a)
	  	7.01
		 	 (b)
	  	7.05, 12.02
		 	 (c)
	  	7.01
		 	 (d)
	  	7.01
		 	 (e)
	  	6.11
	316	 	 (a) (last sentence)
	  	2.09
		 	 (a)(1)(A)
	  	6.05
		 	 (a)(1)(B)
	  	6.04
		 	 (a)(2)
	  	N.A.
		 	 (b)
	  	6.07
	317	 	 (a)(1)
	  	6.08
		 	 (a)(2)
	  	6.09
		 	 (b)
	  	2.04
	318	 	 (a)
	  	12.01

 N.A. means Not Applicable. 

Note: This Cross-Reference Table shall not, for any purpose, be deemed to be part of this Indenture. 

 TABLE OF CONTENTS 

 

							
	 	  	 	  	Page	 
	
	ARTICLE 1.	  
	
	DEFINITIONS AND INCORPORATION BY REFERENCE	  
	 SECTION 1.01.
	  	 Definitions
	  	 	1	  
	 SECTION 1.02.
	  	 Other Definitions
	  	 	26	  
	 SECTION 1.03.
	  	 Incorporation by Reference of Trust Indenture Act
	  	 	27	  
	 SECTION 1.04.
	  	 Rules of Construction
	  	 	27	  
	
	ARTICLE 2.	  
	
	THE NOTES	  
			
	 SECTION 2.01.
	  	 Form and Dating
	  	 	28	  
	 SECTION 2.02.
	  	 Execution and Authentication
	  	 	29	  
	 SECTION 2.03.
	  	 Registrar and Paying Agent
	  	 	29	  
	 SECTION 2.04.
	  	 Paying Agent To Hold Money in Trust
	  	 	30	  
	 SECTION 2.05.
	  	 Holder Lists
	  	 	30	  
	 SECTION 2.06.
	  	 Transfer and Exchange
	  	 	30	  
	 SECTION 2.07.
	  	 Replacement Notes
	  	 	40	  
	 SECTION 2.08.
	  	 Outstanding Notes
	  	 	40	  
	 SECTION 2.09.
	  	 Treasury Notes
	  	 	41	  
	 SECTION 2.10.
	  	 Temporary Notes
	  	 	41	  
	 SECTION 2.11.
	  	 Cancellation
	  	 	41	  
	 SECTION 2.12.
	  	 Payment of Interest; Defaulted Interest
	  	 	41	  
	 SECTION 2.13.
	  	 CUSIP or ISIN Numbers
	  	 	41	  
	 SECTION 2.14.
	  	 Additional Interest
	  	 	42	  
	 SECTION 2.15.
	  	 Issuance of Additional Notes
	  	 	42	  
	 SECTION 2.16.
	  	 Record Date
	  	 	42	  
	
	ARTICLE 3.	  
	
	REDEMPTION AND PREPAYMENT	  
			
	 SECTION 3.01.
	  	 Notices to Trustee
	  	 	42	  
	 SECTION 3.02.
	  	 Selection of Notes To Be Redeemed
	  	 	43	  
	 SECTION 3.03.
	  	 Notice of Redemption
	  	 	43	  
	 SECTION 3.04.
	  	 Effect of Notice of Redemption
	  	 	44	  
	 SECTION 3.05.
	  	 Deposit of Redemption Price
	  	 	44	  
	 SECTION 3.06.
	  	 Notes Redeemed in Part
	  	 	44	  
	 SECTION 3.07.
	  	 Optional Redemption
	  	 	44	  
	 SECTION 3.08.
	  	 Mandatory Redemption
	  	 	45	  
	 SECTION 3.09.
	  	 Offer to Purchase
	  	 	45	  
	
	ARTICLE 4.	  
	
	COVENANTS	  
			
	 SECTION 4.01.
	  	 Payment of Notes
	  	 	47	  
	 SECTION 4.02.
	  	 Maintenance of Office or Agency
	  	 	47	  
	 SECTION 4.03.
	  	 Reports
	  	 	48	  

  
 -i-

							
	 	  	 	  	Page	 
	 SECTION 4.04.
	  	 Compliance Certificate
	  	 	48	  
	 SECTION 4.05.
	  	 Taxes
	  	 	49	  
	 SECTION 4.06.
	  	 Stay, Extension and Usury Laws
	  	 	49	  
	 SECTION 4.07.
	  	 Corporate Existence
	  	 	49	  
	 SECTION 4.08.
	  	 Payments for Consent
	  	 	49	  
	 SECTION 4.09.
	  	 Incurrence of Indebtedness and Issuance of Disqualified Stock
	  	 	50	  
	 SECTION 4.10.
	  	 Restricted Payments
	  	 	52	  
	 SECTION 4.11.
	  	 Liens
	  	 	56	  
	 SECTION 4.12.
	  	 Asset Sales
	  	 	56	  
	 SECTION 4.13.
	  	 Dividend and Other Payment Restrictions Affecting Subsidiaries
	  	 	57	  
	 SECTION 4.14.
	  	 Transactions With Affiliates
	  	 	59	  
	 SECTION 4.15.
	  	 Additional Guarantees
	  	 	60	  
	 SECTION 4.16.
	  	 Designation of Restricted and Unrestricted Subsidiaries
	  	 	60	  
	 SECTION 4.17.
	  	 Repurchase at the Option of Holders Upon a Change of Control
	  	 	61	  
	 SECTION 4.18.
	  	 Business Activities
	  	 	61	  
	
	ARTICLE 5.	  
	
	SUCCESSORS	  
			
	 SECTION 5.01.
	  	 Merger, Consolidation and Sale of Assets
	  	 	61	  
	 SECTION 5.02.
	  	 Successor Corporation Substituted
	  	 	62	  
	
	ARTICLE 6.	  
	
	DEFAULTS AND REMEDIES	  
			
	 SECTION 6.01.
	  	 Events of Default
	  	 	63	  
	 SECTION 6.02.
	  	 Acceleration
	  	 	64	  
	 SECTION 6.03.
	  	 Other Remedies
	  	 	64	  
	 SECTION 6.04.
	  	 Waiver of Defaults
	  	 	65	  
	 SECTION 6.05.
	  	 Control by Majority
	  	 	65	  
	 SECTION 6.06.
	  	 Limitation on Suits
	  	 	65	  
	 SECTION 6.07.
	  	 Rights of Holders to Receive Payment
	  	 	66	  
	 SECTION 6.08.
	  	 Collection Suit by Trustee
	  	 	66	  
	 SECTION 6.09.
	  	 Trustee May File Proofs of Claim
	  	 	66	  
	 SECTION 6.10.
	  	 Priorities
	  	 	66	  
	 SECTION 6.11.
	  	 Undertaking for Costs
	  	 	67	  
	
	ARTICLE 7.	  
	
	TRUSTEE	  
			
	 SECTION 7.01.
	  	 Duties of Trustee
	  	 	67	  
	 SECTION 7.02.
	  	 Rights of Trustee
	  	 	68	  
	 SECTION 7.03.
	  	 Individual Rights of Trustee
	  	 	69	  
	 SECTION 7.04.
	  	 Trustee’s Disclaimer
	  	 	69	  
	 SECTION 7.05.
	  	 Notice of Defaults
	  	 	69	  
	 SECTION 7.06.
	  	 Reports by Trustee to Holders
	  	 	69	  
	 SECTION 7.07.
	  	 Compensation and Indemnity
	  	 	70	  
	 SECTION 7.08.
	  	 Replacement of Trustee
	  	 	71	  
	 SECTION 7.09.
	  	 Successor Trustee by Merger, Etc.
	  	 	72	  
	 SECTION 7.10.
	  	 Eligibility; Disqualification
	  	 	72	  
	 SECTION 7.11.
	  	 Preferential Collection of Claims Against Company
	  	 	72	  

  
 -ii-

							
	 	  	 	  	Page	 
	
	ARTICLE 8.	  
	
	LEGAL DEFEASANCE AND COVENANT DEFEASANCE	  
			
	 SECTION 8.01.
	  	 Option to Effect Legal Defeasance or Covenant Defeasance
	  	 	72	  
	 SECTION 8.02.
	  	 Legal Defeasance and Discharge
	  	 	72	  
	 SECTION 8.03.
	  	 Covenant Defeasance
	  	 	73	  
	 SECTION 8.04.
	  	 Conditions to Legal or Covenant Defeasance
	  	 	73	  
	 SECTION 8.05.
	  	 Deposited Cash and Government Securities to be Held in Trust; Other Miscellaneous Provisions
	  	 	74	  
	 SECTION 8.06.
	  	 Repayment to Company
	  	 	74	  
	 SECTION 8.07.
	  	 Reinstatement
	  	 	75	  
	
	ARTICLE 9.	  
	
	AMENDMENT, SUPPLEMENT AND WAIVER	  
			
	 SECTION 9.01.
	  	 Without Consent of Holders of Notes
	  	 	75	  
	 SECTION 9.02.
	  	 With Consent of Holders of Notes
	  	 	76	  
	 SECTION 9.03.
	  	 Compliance With Trust Indenture Act
	  	 	77	  
	 SECTION 9.04.
	  	 Revocation and Effect of Consents
	  	 	77	  
	 SECTION 9.05.
	  	 Notation on or Exchange of Notes
	  	 	77	  
	 SECTION 9.06.
	  	 Trustee to Sign Amendments, Etc.
	  	 	77	  
	
	ARTICLE 10.	  
	
	GUARANTEES	  
			
	 SECTION 10.01.
	  	 Guarantee
	  	 	78	  
	 SECTION 10.02.
	  	 Limitation on Guarantor Liability
	  	 	79	  
	 SECTION 10.03.
	  	 Execution and Delivery of Guarantee
	  	 	79	  
	 SECTION 10.04.
	  	 Guarantors May Consolidate, Etc., on Certain Terms
	  	 	80	  
	 SECTION 10.05.
	  	 Releases Following Merger, Consolidation or Sale of Assets, Etc.
	  	 	80	  
	
	ARTICLE 11.	  
	
	SATISFACTION AND DISCHARGE	  
			
	 SECTION 11.01.
	  	 Satisfaction and Discharge
	  	 	81	  
	 SECTION 11.02.
	  	 Deposited Cash and Government Securities to be Held in Trust; Other Miscellaneous Provisions
	  	 	81	  
	 SECTION 11.03.
	  	 Repayment to Company
	  	 	82	  
	
	ARTICLE 12.	  
	
	MISCELLANEOUS	  
			
	 SECTION 12.01.
	  	 Trust Indenture Act Controls
	  	 	82	  
	 SECTION 12.02.
	  	 Notices
	  	 	82	  
	 SECTION 12.03.
	  	 Communication by Holders of Notes With Other Holders of Notes
	  	 	83	  
	 SECTION 12.04.
	  	 Certificate and Opinion as to Conditions Precedent
	  	 	83	  
	 SECTION 12.05.
	  	 Statements Required in Certificate or Opinion
	  	 	83	  
	 SECTION 12.06.
	  	 Rules by Trustee and Agents
	  	 	84	  
	 SECTION 12.07.
	  	 No Personal Liability of Directors, Officers, Employees and Stockholders
	  	 	84	  
	 SECTION 12.08.
	  	 Governing Law
	  	 	84	  

  
 -iii-

							
	 	  	 	  	Page	 
	 SECTION 12.09.
	  	 No Adverse Interpretation of Other Agreements
	  	 	84	  
	 SECTION 12.10.
	  	 Successors
	  	 	84	  
	 SECTION 12.11.
	  	 Severability
	  	 	84	  
	 SECTION 12.12.
	  	 Counterpart Originals
	  	 	85	  
	 SECTION 12.13.
	  	 Table of Contents, Headings, Etc.
	  	 	85	  
	 SECTION 12.14.
	  	 Qualification of This Indenture
	  	 	85	  
	 SECTION 12.15.
	  	 Effect of Legal Holidays
	  	 	85	  
	 SECTION 12.16.
	  	 Waiver of Jury Trial
	  	 	85	  

 EXHIBITS. 

 

			
	 EXHIBIT A-
	  	FORM OF NOTE
	 EXHIBIT B -
	  	FORM OF CERTIFICATE OF TRANSFER
	 EXHIBIT C -
	  	FORM OF CERTIFICATE OF EXCHANGE
	 EXHIBIT D -
	  	FORM OF CERTIFICATE OF ACQUIRING INSTITUTIONAL ACCREDITED INVESTOR
	 EXHIBIT E -
	  	FORM OF SUPPLEMENTAL INDENTURE

  
 -iv-

 This INDENTURE, dated as of January 28, 2011, is by and among Great Lakes
Dredge & Dock Corporation, a Delaware corporation, the Guarantors from time to time party hereto and Wells Fargo Bank, National Association, a national banking association, as trustee (the “Trustee”). 

The Company, each Guarantor and the Trustee agree as follows for the benefit of each other and for the equal and ratable benefit of the
Holders of the 7.375% Senior Notes due 2019 (the “Notes”) issued under this Indenture: 
 ARTICLE 1.
 
 DEFINITIONS AND INCORPORATION BY REFERENCE 
 SECTION 1.01. Definitions. 
 For all purposes of this Indenture,
except as otherwise expressly provided or unless the context otherwise requires: 
 “144A Global Note” means a
Global Note in the form of Exhibit A hereto bearing the Global Note Legend and the Private Placement Legend and deposited with and registered in the name of the Depositary or its nominee that shall be issued in a denomination equal to the
outstanding principal amount of the Notes sold for initial resale in reliance on Rule 144A. 
 “2003 Merger
Agreement” means the Agreement and Plan of Merger among GLDD Acquisitions Corp., GLDD Merger Sub, Inc. and the Company, dated as of November 12, 2003, in connection with the sale of all of the outstanding common stock of the Company to
GLDD Acquisitions Corp. and the merger of GLDD Merger Sub, Inc. with and into the Company. 
 “2003
Transactions” means, the transactions contemplated by the 2003 Merger Agreement and the related financing transactions. 
 “Acquired Debt” means, with respect to any specified Person, (i) Indebtedness of any other Person existing at the time the other Person is merged with or into or became a Subsidiary
of the specified Person, including, without limitation, Indebtedness incurred in connection with, or in contemplation of, the other Person merging with or into or becoming a Subsidiary of the specified Person, and (ii) Indebtedness secured by a
Lien encumbering any asset acquired by the specified Person. 
 “Additional Interest” means all additional
interest then owing pursuant to the Registration Rights Agreement. 
 “Additional Notes” means any Notes (other
than Initial Notes, Exchange Notes and Notes issued under Sections 2.06, 2.07, 2.10 and 3.06 hereof) issued under this Indenture in accordance with Sections 2.02, 2.15 and 4.09 hereof, as part of the same series as the Initial Notes or as an
additional series. 
 “Affiliate” of any specified Person means any other Person directly or indirectly
controlling or controlled by or under direct or indirect common control with the specified Person. For purposes of this definition, “control” (including, with correlative meanings, the terms “controlling,”
“controlled by” and “under common control with”), as used with respect to any Person, shall mean the possession, directly or indirectly, of the power to direct or cause the direction of the management or policies of
such Person, whether through the ownership of voting securities, by agreement or otherwise; provided that Beneficial Ownership of 10% or more of the Voting Stock of a Person shall be deemed to be control. 

“Agent” means any Registrar, co-registrar, Paying Agent or additional paying agent. 

“Applicable Premium” means, with respect to any Note on any Redemption Date, the greater of: 

(1) 1.0% of the principal amount of such Note; and 

  

 (2) the excess, if any, of (a) the present value at such Redemption Date of
(i) the redemption price of such Note at February 1, 2015 (such redemption price being set forth in the table appearing in Section 3.07(a)), plus (ii) all required interest payments due on such Note through February 1, 2015
(excluding accrued but unpaid interest to the Redemption Date), computed using a discount rate equal to the Treasury Rate as of such Redemption Date plus 50 basis points; over (b) then outstanding principal amount of such Note. 

“Applicable Procedures” means, with respect to any transfer, redemption, tender or exchange of or for beneficial
interests in any Global Note, the rules and procedures of the Depositary, Euroclear and Clearstream that apply to such transfer, redemption, tender or exchange. 
 “Asset Sale” means 
 (i) the sale, lease,
conveyance or other disposition of any assets or rights (including, without limitation, by way of a sale and leaseback) other than sales of inventory in the ordinary course of business consistent with past practices (provided that the sale,
conveyance or other disposition of all or substantially all of the assets of the Company and its Subsidiaries, taken as a whole, will be governed by Section 4.17 and/or Section 5.01 and not by Section 4.12), and 

(ii) the issue or sale by any Restricted Subsidiary of Equity Interests of any of the Company’s Subsidiaries,

 in the case of either clause (i) or (ii), whether in a single transaction or a series of related transactions (a) that involve
assets or Equity Interests that have a Fair Market Value in excess of $5.0 million or (b) for Net Proceeds in excess of $5.0 million. 
 Notwithstanding the foregoing, the following items shall not be deemed to be Asset Sales: 
 (i) a transfer of assets by the Company to a Restricted Subsidiary or by a Restricted Subsidiary to the Company or to another Restricted Subsidiary, 

(ii) an issuance, sale, transfer or other disposition of Equity Interests by a Restricted Subsidiary to the Company or to
another Restricted Subsidiary, 
 (iii) a Restricted Payment that is permitted by Section 4.10 or a
Permitted Investment, 
 (iv) the sale and leaseback of any assets within 180 days of the date of acquisition or
completion of construction of such assets, 
 (v) the sale or other disposition of assets that have become worn
out, obsolete or damaged or no longer used or useful in the business of the Company or any Restricted Subsidiary, as the case may be, in the ordinary course of business, 

(vi) bareboat charters, leases or licenses entered into in the ordinary course of business for a term not to exceed 12
months, 
 (vii) the sale or other disposition of cash or Cash Equivalents, 

(viii) the sale or lease of products or services or the licensing of intellectual property, in each case in the ordinary
course of business, 
 (ix) the sale for Fair Market Value of accounts receivable that are generated from
operations conducted outside the United States by the Company or any Restricted Subsidiary, and 

  
 -8-

 (x) the creation of a Permitted Lien and dispositions in connection with the
creation of Permitted Liens. 
 “Bankruptcy Law” means Title 11, United States Code or any similar federal or
state law for the relief of debtors, or the law of any other jurisdiction relating to bankruptcy, insolvency, winding up, liquidation, reorganization or relief of debtors. 
 “Beneficial Owner” has the meaning assigned to such term in Rule 13d-3 and Rule 13d-5 under the Exchange Act, except that in calculating the beneficial ownership of any particular
“person” (as such term is used in Section 13(d)(3) of the Exchange Act), such “person” shall be deemed to have beneficial ownership of all securities that such “person” has the right to acquire by conversion or
exercise of other securities, whether such right is currently exercisable or is exercisable only upon the occurrence of a subsequent condition. 
 “Board of Directors” means (1) in respect of a corporation, the board of directors of the corporation, or any duly authorized committee thereof; and (2) in respect of any other
Person, the board or committee of that Person serving an equivalent function. 
 “Board Resolution” means a
copy of a resolution certified by the secretary or an assistant secretary (or individual performing comparable duties) of the applicable Person to have been duly adopted by the Board of Directors of such Person and to be in full force and effect on
the date of such certification, and delivered to the Trustee. 
 “Bonding Agreement” means (i) the Third
Amended and Restated Underwriting and Continuing Indemnity Agreement by and among the Company, certain of its Subsidiaries and Travelers Casualty and Surety Company and Travelers Casualty and Surety Company of America, and (ii) the
International Letter of Credit Agreement, dated September 29, 2006, by and among the Company and Wells Fargo HSBC Trade Bank, as amended on July 16, 2007, and as further amended on September 29, 2009 (the “International Letter
of Credit Facility”) (and any related obligations, including, without limitation, any Export-Import Bank guarantee program), in each case, including any related notes, guarantees, collateral documents, instruments and agreements
executed in connection therewith, as amended, restated, modified, renewed, refunded, replaced or refinanced in whole or in part from time to time. 
 “Business Day” means any day other than a Legal Holiday. 

“Capital Lease Obligation” means, at the time any determination of a capital lease obligation is to be made, the amount
of the liability in respect of a capital lease that would at such time be required to be capitalized on a balance sheet in accordance with GAAP. 
 “Capital Stock” means 
 (i) in the case of a
corporation, corporate stock, 
 (ii) in the case of an association or business entity, any and all shares,
interests, participations, rights or other equivalents (however designated) of corporate stock, 
 (iii) in the
case of a partnership or limited liability company, partnership or membership interests (whether general or limited) and 
 (iv) any other interest or participation that confers on a Person the right to receive a share of the profits and losses of, or distributions of assets of, the issuing Person. 

“Cash Equivalents” means: 
 (i) United States dollars or money in other currencies received in the ordinary course of business, 

  
 -9-

 (ii) obligations issued or guaranteed by the United States government or any
agency of the United States (provided that the full faith and credit of the United States is pledged in support) having maturities of not more than one year from the date of acquisition, 

(iii) certificates of deposit and eurodollar time deposits with maturities of one year or less from the date of
acquisition, bankers’ acceptances with maturities not exceeding one year and overnight bank deposits, in each case with any commercial bank having capital and surplus in excess of $500 million, 

(iv) repurchase obligations with a term of not more than thirty days for underlying securities of the types described in
clauses (ii) and (iii) above entered into with any institution meeting the qualifications specified in clause (iii) above, 
 (v) obligations issued by any state of the United States of America or any political subdivision of any such state maturing within one year from the date of acquisition and, at the time of acquisition,
having one of the two highest ratings obtainable from either S&P or Moody’s, 
 (vi) commercial paper
having one of the two highest ratings obtainable from Moody’s or S&P and in each case maturing within one year after the date of acquisition, 
 (vii) money market funds at least 95% of the assets of which constitute Cash Equivalents of the kinds described in clauses (i) through (vi) of this definition, 

(viii) short-term asset management accounts offered by any lender under Credit Facilities for the purpose of investing in
notes issued by a corporation (other than the Company or any Affiliate of the Company) organized under the laws of any state of the United States or of the District of Columbia and rated A-2 or higher by S&P, or P-2 or higher by Moody’s,

 (ix) securities with maturities of one year or less from the date of acquisition issued or fully and
unconditionally guaranteed by any state, commonwealth or territory of the United States of America or the federal government of Canada, or by any political subdivision or taxing authority thereof, and having one of the two highest ratings obtainable
from S&P or Moody’s, 
 (x) time or demand deposits with any bank or trust company, 

(xi) participation in loans made to a borrower (other than an Affiliate of the Company) with a debt rating of A–2 or
higher from S&P, or P-2 or higher from Moody’s; provided, however, that such loans must mature within one year from the date such participation is purchased, 

(xii) bonds issued by a municipality or governmental agency and rated not lower than BBB by S&P, or Baa2 by
Moody’s and purchased by the Company or any of its Subsidiaries in the ordinary course of its business in connection with retainage under contracts with its customers, and 

(xiii) in the case of Foreign Subsidiaries, short term investments comparable to the foregoing. 

“Change of Control” means the occurrence of any of the following: 

(i) the sale, lease, transfer, conveyance or other disposition (other than by way of merger or consolidation), in one or a
series of related transactions, of all or substantially all of the assets of the Company and its Subsidiaries (determined on a consolidated basis), in each case, to any “person” (as that term is used in Section 13(d)(3) of the
Exchange Act) other than the Company or a Wholly Owned Restricted Subsidiary of the Company, 
 (ii) the adoption
of a plan relating to the liquidation or dissolution of the Company (other than in a transaction which complies with the provisions described under Section 5.01), 

  
 -10-

 (iii) the consummation of any transaction (including, without limitation,
any merger or consolidation) the result of which is that any “person” (as defined above) becomes the Beneficial Owner, directly or indirectly, of more than 50% of the Voting Stock of the Company (measured by voting power rather than
number of shares), or 
 (iv) the first day on which a majority of the members of the Board of Directors of the
Company are not Continuing Directors. 
 “Clearstream” means Clearstream Banking S.A. and any successor
thereto. 
 “Code” means the U.S. Internal Revenue Code of 1986, as amended. 

“Commission” means the Securities and Exchange Commission, as from time to time constituted, created under the
Securities Exchange Act of 1934, as amended, or if at any time after the execution and delivery of this Indenture such Commission is not existing and performing the duties now assigned to it under the TIA, then the body performing such duties on
such date. 
 “Company” means Great Lakes Dredge & Dock Corporation, and any successor thereto.

 “Consolidated Cash Flow” means, with respect to any Person for any period, the Consolidated Net Income of
such Person for such period, plus 
 (i) an amount equal to any extraordinary or nonrecurring loss
(including any loss on extinguishment or conversion of Indebtedness) plus any net loss realized in connection with an Asset Sale (without giving effect to the $5.0 million threshold provided in the definition thereof), to the extent those losses
were deducted in computing the Consolidated Net Income, plus 
 (ii) provision for taxes based on income
or profits of such Person and its Restricted Subsidiaries for such period, to the extent that such provision for taxes was deducted in computing the Consolidated Net Income, plus 

(iii) consolidated Fixed Charges to the extent that any such Fixed Charges were deducted in computing the Consolidated Net
Income, plus 
 (iv) depreciation, amortization (including amortization of goodwill and other intangibles
but excluding amortization of prepaid cash expenses that were paid in a prior period) and other non-cash items (excluding any non-cash item to the extent that it represents an accrual of or reserve for cash expenses in any future period or
amortization of a prepaid cash expense that was paid in a prior period) of such Person and its Restricted Subsidiaries for such period to the extent that such depreciation, amortization and other non-cash items were deducted in computing the
Consolidated Net Income, minus 
 (v) non-cash items increasing the Consolidated Net Income for such
period other than (i) accrual of revenue in the ordinary course of business and (ii) reversals of prior accruals or reserves for cash items previously excluded from Consolidated Cash Flow pursuant to clause (iv) of this definition,

 in each case, on a consolidated basis and determined in accordance with GAAP. 

“Consolidated Net Income” means, with respect to any Person for any period, the aggregate of the Net Income of such
Person and its Restricted Subsidiaries for such period, on a consolidated basis, determined in accordance with GAAP; provided that 
 (i) the Net Income of any Person that is not a Restricted Subsidiary or that is accounted for by the equity method of accounting shall be included only to the extent of the amount of dividends or
distributions paid in cash to the referent Person or its Restricted Subsidiary; 

  
 -11-

 (ii) the Net Income of any Restricted Subsidiary shall be excluded to the
extent that the declaration or payment of dividends or similar distributions by that Restricted Subsidiary of that Net Income is not at the date of determination permitted without any prior governmental approval (that has not been obtained) or,
directly or indirectly, by operation of the terms of its charter or any agreement, instrument, judgment, decree, order, statute, rule or governmental regulation applicable to that Restricted Subsidiary or its stockholders; 

(iii) the cumulative effect of a change in accounting principles shall be excluded; 

(iv) the Net Income of any Unrestricted Subsidiary shall be excluded, whether or not distributed to the Company or one of
its Subsidiaries; 
 (v) any non-cash goodwill or other intangible asset impairment charges incurred subsequent
to the Issue Date resulting from the application of ASC Topic 350, “Intangibles- Good Will and Other,” ASC Topic 360, “Property, Plant and Equipment” and ASC Topic 805, “Business Combinations” or any related subsequent
statement of financial accounting standards shall be excluded; 
 (vi) any non-cash compensation charges,
including any such charges arising from stock options, restricted stock grants or other equity-incentive programs shall be excluded; 
 (vii) any increase in amortization or depreciation expense or any one-time non-cash charges resulting from purchase accounting or any non-recurring costs and expenses incurred in connection with the 2003
Transactions, the acquisition of L.W. Matteson, Inc. and the transactions related thereto, or any acquisition that is consummated after the Issue Date shall be excluded; 

(viii) any fees, expenses and debt issuance costs paid in connection with issuance of the Notes shall be excluded;

 (ix) the Net Income from any disposed or discontinued operations or any net gains or losses on disposed or
discontinued operations, on an after tax basis, shall be excluded; 
 (x) the non-cash gains, losses, income, and
expenses resulting from fair value accounting required by ASC Topic 815, “Derivatives and Hedging” or any related subsequent statement of financial accounting standards shall be excluded; and 

(xi) any net unrealized gain or loss (after any offsets) resulting from any foreign currency translation shall be
excluded. 
 “Continuing Directors” means, as of any date of determination, any member of the Board of
Directors of the Company who (i) was a member of the Board of Directors on the Issue Date or (ii) was nominated for election or elected to the Board of Directors with the approval of a majority of the Continuing Directors who were members
of the Board at the time of the nomination or election. 
 “Corporate Trust Office of the Trustee” shall be at
the address of the Trustee specified in Section 12.02 hereof, or such other address as to which the Trustee may give notice to the Company, and for purposes of Section 2.03 and Section 4.02 such office shall also mean the office or
agency of the Trustee located at 608 Second Avenue South, N9303-121, Minneapolis, MN 55479, Attn: Corporate Trust Operations. 

“Credit Agreement” means that Credit Agreement, dated as of June 12, 2007 (as amended on or prior to the Issue
Date), by and among the Company, Bank of America, N.A. (successor by merger to LaSalle Bank National Association), as swing line lender, sole lead arranger and administrative agent, and the other lenders that are party to the Credit Agreement,
including any related notes, guarantees, collateral documents, instruments and agreements executed in connection therewith, and in each case as increased as permitted by the terms of this Indenture, and amended, modified, renewed, restated,
refunded, replaced or refinanced from time to time, including any agreement extending the maturity of, refinancing, replacing or otherwise restructuring (including adding Subsidiaries of the 

  
 -12-

 
Company as additional borrowers or guarantors thereunder) all or any portion of the Indebtedness under such agreement or any successor or replacement agreement and whether by the same or any
other agent, lender or group of lenders or through the issuance of debt securities. 
 “Credit Facilities”
means, with respect to the Company or its Restricted Subsidiaries, one or more debt facilities (including, without limitation, the Credit Agreement) or commercial paper facilities or indentures with banks or other institutional lenders or a trustee
providing for revolving credit loans, term loans, receivables financing (including through the sale of receivables to such lenders or to special purpose entities formed to borrow from such lenders against such receivables) or letters of credit or
issuance of debt securities to institutional investors, in each case, as increased as permitted by the terms of this Indenture, and amended, restated, modified, renewed, refunded, replaced, restated, substituted or refinanced in whole or in part
from time to time. 
 “Custodian” means, with respect to the Notes issuable or issued in whole or in part in
global form, the Person specified in Section 2.03(c) as Custodian with respect to the Notes, and any and all successors thereto appointed as custodian hereunder and having become such pursuant to the applicable provisions of this Indenture.

 “Default” means any event that is or with the passage of time or the giving of notice or both would be an
Event of Default. 
 “Definitive Note” means a certificated Note registered in the name of the Holder thereof
and issued in accordance with Section 2.06 or 2.10 hereof, in substantially the form of Exhibit A hereto, except that such Note shall not bear the Global Note Legend and shall not have the “Schedule of Exchanges of Interests in the
Global Note” attached thereto. 
 “Depositary” means, with respect to the Notes issuable or issued in
whole or in part in global form, the Person specified in Section 2.03(b) hereof as the Depositary with respect to the Notes, and any and all successors thereto appointed as depositary hereunder and having become such pursuant to the applicable
provisions of this Indenture. 
 “Designated Non-cash Consideration” means any non-cash consideration received
by the Company or one of its Restricted Subsidiaries in connection with an Asset Sale that is designated as Designated Non-cash Consideration pursuant to an Officers’ Certificate executed by the Chief Financial Officer of the Company. Such
Officers’ Certificate shall state the basis of such valuation. A particular item of Designated Non-cash Consideration shall no longer be considered to be outstanding to the extent it has been sold or liquidated for cash (but only to the extent
of the cash received). 
 “Designated Vessels” means the dredge “New York,” the dredge “Liberty
Island,” the bottom-dump barges G.L.65, G.L.501 and G.L.502, the self-unloading barge “Long Island,” the trailing suction hopper dredge “Terrapin Island” and the barge “U.S. Flag Idler,” G.L.177, and ancillary
equipment related thereto. 
 “Disqualified Stock” means any Capital Stock that, by its terms (or by the terms
of any security into which it is convertible, or for which it is exchangeable, at the option of the holder), or upon the happening of any event (other than optional redemption by the Company thereof), matures or is mandatorily redeemable, pursuant
to a sinking fund obligation or otherwise, or redeemable at the option of the holder, in whole or in part, on or prior to the date that is 91 days after the date on which the Notes mature; provided, however, that any Capital Stock that
would constitute Disqualified Stock solely because the holders have the right to require the Company to repurchase the Capital Stock upon the occurrence of a Change of Control or an Asset Sale shall not constitute Disqualified Stock if the terms of
the Capital Stock provide that the Company may not repurchase or redeem any such Capital Stock pursuant to such provisions unless the repurchase or redemption complies with Section 4.10. 

“Distribution Compliance Period” means the 40-day distribution compliance period as defined in Regulation S. 

“Domestic Subsidiary” means any Restricted Subsidiary of the Company that was formed under the laws of the United States
or any state of the United States or the District of Columbia. 

  
 -13-

 “Equity Interests” means Capital Stock and all warrants, options or other
rights to acquire Capital Stock (but excluding any debt security that is convertible into, or exchangeable for, Capital Stock). 

“Equity Offering” means a public or private offering or sale of Equity Interests (other than Disqualified Stock) of the
Company or a direct or indirect parent of the Company (so long as the net proceeds thereof are contributed to the common equity capital of the Company). 
 “Euroclear” means Euroclear Bank, S.A./N.V., as operator of the Euroclear systems, and any successor thereto. 
 “Exchange Act” means the Securities Exchange Act of 1934, as amended, or any successor statute or statutes thereto. 

“Exchange Notes” means new Notes of the Company issued in the Exchange Offer, provided that such new Notes have
terms substantially identical in all material respects to the Notes (except that Exchange Notes will not contain terms with respect to transfer restrictions) for which such offer is being made. 

“Exchange Offer” means the registration by the Company under the Securities Act of the Exchange Notes pursuant to a
Registration Statement pursuant to which the Company offers the holders of all outstanding Registrable Securities (as defined in the Registration Rights Agreement) the opportunity to exchange all such outstanding Registrable Securities held by such
holders for Exchange Notes in an aggregate principal amount equal to the aggregate principal amount of the Registrable Securities validly tendered in such exchange offer by such holders. 

“Exchange Offer Registration Statement” has the meaning set forth in a Registration Rights Agreement. 

“Excluded Contribution” means the net cash proceeds received by the Company after the Issue Date from
(a) contributions to its common equity capital and (b) the sale (other than to a Subsidiary or pursuant to any management equity plan or stock option plan or any other management or employee benefit plan or agreement of the Company or any
of its Subsidiaries) of Capital Stock (other than Disqualified Stock) of the Company, in each case designated within 60 days of the receipt of such net cash proceeds as Excluded Contributions pursuant to an Officers’ Certificate, the cash
proceeds of which are excluded from the calculation set forth in clause (iv)(c)(ii) of the first paragraph of Section 4.10. 
 “Excluded Subsidiaries” means each Foreign Subsidiary and each Domestic Subsidiary that is not a Wholly Owned Restricted Subsidiary. 

“Existing Indebtedness” means Indebtedness (including guarantees) of the Company and its Restricted Subsidiaries (other
than Indebtedness incurred pursuant to clause (i) of the second paragraph of Section 4.09) in existence on the Issue Date, until permanently repaid. 
 “Fair Market Value” means, with respect to any asset, the price (after taking into account any liabilities relating to such assets) that would be negotiated in an arm’s-length
transaction between a willing seller and a willing and able buyer, neither of whom is under undue pressure or compulsion to complete the transaction; provided that, other than as expressly set forth in this Indenture, for purposes of
determining the “Fair Market Value” of any property or assets, such Fair Market Value shall be determined by (x) the Company in good faith with respect to assets or property with a Fair Market Value not in excess of $5.0 million,
(y) the Company’s Chief Financial Officer with respect to assets or property with a Fair Market Value in excess of $5.0 million but not in excess of $10.0 million and (z) the Company’s Board of Directors with respect to assets or
property with a Fair Market Value in excess of $10.0 million. 
 “Fixed Charge Coverage Ratio” means with
respect to any Person for any period, the ratio of the Consolidated Cash Flow to the Fixed Charges of such Person for such period. In the event that the referent Person or any of its Restricted Subsidiaries incurs, assumes, guarantees, repays or
redeems any Indebtedness (other than repayment of revolving credit borrowings that are not accompanied by a permanent reduction in the commitment 

  
 -14-

 
amount) or issues or redeems preferred stock subsequent to the commencement of the period for which the Fixed Charge Coverage Ratio is being calculated but prior to the date on which the event
for which the calculation of the Fixed Charge Coverage Ratio is made (the “Calculation Date”), then the Fixed Charge Coverage Ratio shall be calculated giving pro forma effect to such incurrence, assumption, guarantee or
redemption of Indebtedness, or such issuance or redemption of preferred stock, as if the same had occurred at the beginning of the applicable four-quarter reference period. In addition, for purposes of making the computation referred to above,

 (i) acquisitions and dispositions that have been made by the Company or any of its Restricted Subsidiaries,
including through mergers or consolidations and including any related financing transactions, during the four-quarter reference period or subsequent to such reference period and on or prior to the Calculation Date shall be given pro forma
effect as if they occurred on the first day of the four-quarter reference period in accordance with Regulation S-X under the Securities Act and, in connection with any acquisition, shall be calculated giving pro forma effect to Pro Forma
Cost Savings; 
 (ii) the Consolidated Cash Flow attributable to discontinued operations, as determined in
accordance with GAAP, and operations or businesses disposed of prior to the Calculation Date, shall be excluded in accordance with clause (i) above; 
 (iii) the Fixed Charges attributable to discontinued operations, as determined in accordance with GAAP, and operations or businesses disposed of prior to the Calculation Date, shall be excluded in
accordance with clause (i) or (ii) above, as applicable, but only to the extent that the obligations giving rise to such Fixed Charges will not be obligations of the referent Person or any of its Restricted Subsidiaries following the
Calculation Date; 
 (iv) Consolidated Cash Flow shall be calculated giving pro forma effect to the
creation, designation or redesignation of Restricted and Unrestricted Subsidiaries, as if such creation, designation or redesignation occurred on the first day of the four-quarter reference period; and 

(v) if any Indebtedness being incurred bears a floating rate of interest, the interest expense on such Indebtedness will
be calculated as if the rate in effect on the Calculation Date had been the applicable rate for the entire period (taking into account any Hedging Obligation applicable to such Indebtedness if such Hedging Obligation has a remaining term as at the
Calculation Date in excess of 12 months). 
 “Fixed Charges” means, with respect to any Person for any period,
the sum, without duplication, of 
 (i) the consolidated interest expense of such Person and its Restricted
Subsidiaries for such period, whether paid or accrued (including, without limitation, amortization of debt issuance costs and original issue discount, non-cash interest payments, the interest component of any deferred payment obligations, the
interest component of all payments associated with Capital Lease Obligations, commissions, discounts and other fees and charges incurred in respect of letter of credit or bankers’ acceptance financings, and net payments (if any) pursuant to
interest rate Hedging Obligations (but excluding the amortization or write-off of financing fees in connection with the transactions contemplated in connection with the initial offering of the Notes), net of interest income of such Person and its
Restricted Subsidiaries for such period, and 
 (ii) the consolidated interest of such Person and its Restricted
Subsidiaries that was capitalized during such period, and 
 (iii) any interest expense on Indebtedness of
another Person that is guaranteed by such Person or one of its Restricted Subsidiaries or secured by a Lien on assets of such Person or one of its Restricted Subsidiaries (whether or not the guarantee or Lien is called upon), and 

(iv) the product of (a) all cash dividend payments and non-cash dividend payments on any series of preferred stock
and any series of Disqualified Stock, in each case, of such Person or any of its Restricted Subsidiaries, other than dividend payments (x) on Equity Interests payable solely in Equity 

  
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Interests of the Company (other than Disqualified Stock) or (y) to the Company or a Guarantor, times (b) a fraction, the numerator of which is one and the denominator of which is one
minus the then current combined federal, state and local statutory tax rate of such Person, expressed as a decimal, in each case, on a consolidated basis and in accordance with GAAP. 

“Foreign Subsidiary” means a Restricted Subsidiary that is not a Domestic Subsidiary. 

“GAAP” means generally accepted accounting principles set forth in the opinions and pronouncements of the Accounting
Principles Board of the American Institute of Certified Public Accountants and statements and pronouncements of the Financial Accounting Standards Board or in such other statements by such other entity as have been approved by a significant segment
of the accounting profession, in each case, which are in effect on the Issue Date. 
 “Global Note Legend”
means the legend set forth in Section 2.06(g)(ii), which is required to be placed on all Global Notes issued under this Indenture. 
 “Global Notes” means the global Notes in the form of Exhibit A hereto issued in accordance with Article 2 hereof. 

“Government Securities” means securities that are: 

(1) direct obligations of the United States of America for the timely payment of which its full faith and credit is
pledged, or 
 (2) obligations of a Person controlled or supervised by and acting as an agency or instrumentality
of the United States of America the timely payment of which is unconditionally guaranteed as a full faith and credit Obligation by the United States of America, which, in each case, are not callable or redeemable at the option of the issuer thereof,
and shall also include a depository receipt issued by a bank (as defined in Section 3(a)(2) of the Securities Act) as custodian with respect to any such U.S. government obligations or a specific payment of principal of or interest on any such
U.S. government obligations held by such custodian for the account of the holder of such depository receipt; provided, however, that (except as required by law) such custodian is not authorized to make any deduction from the amount
payable to the holder of such depository receipt from any amount received by the custodian in respect of the U.S. government obligations or the specific payment of principal of or interest on the U.S. government obligations evidenced by such
depository receipt. 
 “guarantee” means a guarantee (other than by endorsement of negotiable instruments for
collection in the ordinary course of business), direct or indirect, in any manner (including, without limitation, by way of a pledge of assets or through letters of credit or reimbursement agreements), of all or any part of any Indebtedness.

 “Guarantee” means a full and unconditional senior unsecured guarantee of the Notes pursuant to this
Indenture. 
 “Guarantor” means each of the Persons identified on the signature page hereto under the heading
“Guarantors” and any Restricted Subsidiary of the Company that hereafter issues a Guarantee of the Notes, pursuant to Section 4.15, in each case, until such Person is released from its Guarantee in accordance with this Indenture.

 “Hedging Obligations” means, with respect to any Person, the obligations of such Person under 

(i) interest rate or currency swap agreements, interest rate cap agreements and interest rate collar agreements,

 (ii) other agreements or arrangements designed for the purpose of fixing, hedging or swapping interest rate
risk or currency exchange rate risk, and 

  
 -16-

 (iii) commodities purchase and sale agreements and other similar agreements
designed for the purpose of fixing, hedging or swapping the price risk related to raw materials or other commodities (including fuel) used by the Company and its Restricted Subsidiaries in the ordinary course of business. 

“Holder” means a Person in whose name a Note is registered. 

“IAI Global Note” means a Global Note in the form of Exhibit A hereto bearing the Global Note Legend and the Private
Placement Legend and deposited with and registered in the name of the Depositary or its nominee, issued in a denomination equal to the outstanding principal amount of the Notes sold to Institutional Accredited Investors, if any, to the extent
required by the Applicable Procedures. 
 “Indebtedness” means, with respect to any Person, any indebtedness of
such Person, whether or not contingent, in respect of: 
 (i) borrowed money, or 

(ii) evidenced by bonds, notes, debentures or similar instruments or letters of credit (or related reimbursement
agreements), or 
 (iii) bankers’ acceptances, or 

(iv) representing Capital Lease Obligations, or 

(v) the balance deferred and unpaid of the purchase price of any property except any such balance that constitutes an
accrued expense or trade payable, or 
 (vi) representing the net amount owing under any Hedging Obligations
relating to interest rate risk, 
 if and to the extent any of the foregoing (other than letters of credit and Hedging Obligations) would appear
as a liability upon a balance sheet of such Person prepared in accordance with GAAP, as well as all Indebtedness of others secured by a Lien on any asset of such Person (whether or not such Indebtedness is assumed by such Person) and, to the extent
not otherwise included, the guarantee by such Person of any Indebtedness of any other Person. 
 “Indenture”
means this instrument, as originally executed or as it may from time to time be supplemented or amended in accordance with Article 9 hereof. 
 “Indirect Participant” means a Person who holds a beneficial interest in a Global Note through a Participant. 
 “Initial Notes” means $250,000,000 in aggregate principal amount of Notes issued under this Indenture on the date hereof. 

“Institutional Accredited Investor” means an institution that is an “accredited investor” as defined in Rule
501(a)(1), (2), (3) or (7) under the Securities Act. 
 “Interest Payment Dates” shall have the
meaning set forth in paragraph 1 of each Note. 
 “Investments” means, with respect to any Person, all
investments by such Person in other Persons (including Affiliates) in the forms of direct or indirect loans (including guarantees of Indebtedness or other Obligations), advances or capital contributions (excluding commission, travel and similar
advances to officers and employees made in the ordinary course of business), purchases or other acquisitions of Indebtedness, Equity Interests or other securities, together with all items that are or would be classified as investments on a balance
sheet prepared in accordance with GAAP; provided that an acquisition of Equity Interests or other securities by the Company or any of its Restricted Subsidiaries for consideration consisting solely of Equity Interests (other than

  
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Disqualified Stock) of the Company shall not be deemed to be an Investment. If the Company or any Restricted Subsidiary of the Company sells or otherwise disposes of any Equity Interests of any
direct or indirect Restricted Subsidiary of the Company such that, after giving effect to the sale or disposition, such Person is no longer a Restricted Subsidiary of the Company, the Company shall be deemed to have made an Investment on the date of
any such sale or disposition equal to the Fair Market Value of the Equity Interests of the Restricted Subsidiary not sold or disposed of in an amount determined as provided in the final paragraph of Section 4.10. 

“Issue Date” means January 28, 2011. 
 “Legal Holiday” means a Saturday, a Sunday or a day on which banking institutions in the city of New York, the city of Chicago, the city in which the Corporate Trust Office of the Trustee
is located or any other place of payment on the Notes are authorized by law, regulation or executive order to remain closed. 

“Letter of Transmittal” means the letter of transmittal, or its electronic equivalent in accordance with the Applicable
Procedures, to be prepared by the Company and sent to all Holders of the Initial Notes or any Additional Notes for use by such Holders in connection with an Exchange Offer. 
 “Lien” means, with respect to any asset, any mortgage, lien, pledge, charge, security interest or encumbrance of any kind, whether or not filed, recorded or otherwise perfected under
applicable law (including any conditional sale or other title retention agreement, any lease in the nature of a conditional sale or title retention agreement, any option or other agreement to sell or give a security interest in and any filing of or
agreement to give any financing statement under the Uniform Commercial Code (or equivalent statutes) of any jurisdiction). 

“Moody’s” means Moody’s Investors Service, Inc. or any successor to the rating agency business of Moody’s
Investors Service, Inc. 
 “Net Income” means, with respect to any Person for any period, the net income (loss)
of such Person, determined in accordance with GAAP and before any reduction in respect of dividends on preferred interests, excluding, however, 
 (a) any gain or loss, together with any related provision for taxes on the gain or loss, realized in connection with (1) any Asset Sale (including, without limitation, dispositions pursuant to sale
and leaseback transactions) (without giving effect to the $5.0 million threshold provided for in the definition thereof) or (2) the disposition of any securities by such Person or any of its Restricted Subsidiaries or the extinguishment of any
Indebtedness of such Person or any of its Restricted Subsidiaries and 
 (b) any extraordinary or nonrecurring
gain or loss, together with any related provision for taxes on the extraordinary or nonrecurring gain or loss. 
 “Net
Proceeds” means the aggregate cash proceeds received by the Company or any of its Restricted Subsidiaries in respect of any Asset Sale (including, without limitation, any cash received upon the sale or other disposition of any non-cash
consideration received in any Asset Sale (including Designated Non-cash Consideration)), net of 
 (i) the direct
costs relating to such Asset Sale (including, without limitation, legal, accounting and investment banking fees, and sales commissions) and any related relocation expenses, 

(ii) any taxes paid or payable as a result of the Asset Sale (after taking into account any available tax credits or
deductions, any tax sharing arrangements), 
 (iii) any reserve for adjustment in respect of the sale price of
the asset or assets established in accordance with GAAP, 
 (iv) payments made to repay Indebtedness or any other
obligation outstanding at the time of such Asset Sale that is secured by a Lien on the property or assets sold, 

  
 -18-

 (v) all distributions and other payments required to be made to minority
interest holders in Subsidiaries or joint ventures as a result of such Asset Sale, and 
 (vi) appropriate
amounts to be provided by the Company or any Restricted Subsidiary as a reserve against any liabilities associated with such Asset Sale, including, without limitation, pension and other post-employment benefit liabilities, liabilities related to
environmental matters and liabilities under any indemnification obligations associated with such Asset Sale, all as determined in conformity with GAAP. 
 “Non-Recourse Debt” means Indebtedness 
 (i) as to
which neither the Company nor any of its Restricted Subsidiaries (a) provides credit support of any kind (including any undertaking, agreement or instrument that would constitute Indebtedness), (b) is directly or indirectly liable (as a
guarantor or otherwise), or (c) constitutes the lender; and 
 (ii) no default with respect to which
(including any rights that any holders may have to take enforcement action against an Unrestricted Subsidiary) would permit (upon notice, lapse of time or both) any holder of any other Indebtedness (other than the Notes) of the Company or any of its
Restricted Subsidiaries to declare a default on such other Indebtedness or cause its payment to be accelerated or payable prior to its Stated Maturity; and 
 (iii) as to which the lenders have been notified in writing that they will not have any recourse to the stock or assets of the Company or any of its Restricted Subsidiaries. 

“Obligations” means any principal, interest, penalties, fees, indemnifications, costs, expenses, reimbursement
obligations, damages and other liabilities and obligations which may arise under or in connection with the Credit Agreement or the Bonding Agreement or under or in connection with the documentation governing any Indebtedness, and in all cases
whether direct or indirect, absolute or contingent, now outstanding or hereafter created, assumed or incurred and including, without limitation, interest accruing subsequent to the filing of a petition in bankruptcy or the commencement of any
insolvency, reorganization or similar proceedings at the rate provided in the relevant document, whether or not an allowed claim, and any obligation to redeem or defease any of the foregoing. 

“Offering Memorandum” means the offering memorandum, dated January 25, 2011 relating to the Initial Notes.

 “Officer” means the Chief Executive Officer, the President, the Chief Financial Officer, the Secretary, any
Executive Vice President or any Senior Vice President of the Company. 
 “Officers’ Certificate” means a
certificate, in form and substance reasonably satisfactory to the Trustee, signed by two Officers of the Company, at least one of whom shall be the principal executive officer or principal financial officer of the Company, and delivered to the
Trustee. 
 “Opinion of Counsel” means a written opinion from legal counsel and which meets the requirements of
Section 12.05 hereof. The counsel may be an employee of or counsel to the Company. 
 “Participant” means,
with respect to the Depositary, Euroclear or Clearstream, a Person who has an account with the Depositary, Euroclear or Clearstream, respectively, and, with respect to DTC, shall include Euroclear and Clearstream. 

“Permitted Bonding Obligations” means (i) obligations incurred by the Company or any of its Restricted Subsidiaries
(including guarantees) with respect to letters of credit, bankers’ acceptances, bid, payment, performance, surety, appeal or similar bonds and completion guarantees in the ordinary course of business and (ii) obligations incurred by the
Company or any of its Restricted Subsidiaries (including guarantees) under the Bonding Agreement. 

  
 -19-

 “Permitted Business” means any of the businesses engaged in by the Company
and its Restricted Subsidiaries on the Issue Date, together with other marine specialty contractor services, marine infrastructure construction, demolition and environmental services, dredging, repair, salvage and maintenance services, marine
transportation, aggregates production, storage, handling, sales and supply and any other reasonably related, complementary or ancillary business or other business that is a reasonable extension or expansion of such business. 

“Permitted Investments” means 
 (a) any Investment in the Company or in a Restricted Subsidiary of the Company; 
 (b) any Investment in Cash Equivalents; 
 (c) any Investment by the
Company or any Restricted Subsidiary of the Company in a Person, if as a result of such Investment (i) such Person becomes a Restricted Subsidiary of the Company or (ii) such Person is merged, consolidated or amalgamated with or into, or
transfers or conveys substantially all of its assets to, or is liquidated into, the Company or a Restricted Subsidiary of the Company; 
 (d) any Investment made as a result of the receipt of assets not constituting Cash Equivalents from an Asset Sale that was made pursuant to and in compliance with Section 4.12; 

(e) any acquisition of assets solely in exchange for the issuance of Equity Interests (other than Disqualified Stock) of
the Company; 
 (f) other Investments in any Person having an aggregate Fair Market Value (measured on the date
each such Investment was made and without giving effect to subsequent changes in value), when taken together with all other Investments made pursuant to this clause (f) that are at the time outstanding, not to exceed the greater of $35.0
million and 7.5% of Total Tangible Assets, provided, however, that if an Investment pursuant to this clause (f) is made in any Person that is not a Restricted Subsidiary of the Company at the date of the making of the Investment
and such person becomes a Restricted Subsidiary after such date, such Investment shall thereafter be deemed to have been made pursuant to clause (a) above, and shall cease to have been made pursuant to this clause (f); 

(g) Investments received in settlement, compromise or resolution of: (a) obligations of trade creditors, suppliers or
customers that were incurred in the ordinary course of business of the Company or any of its Subsidiaries including pursuant to a plan of reorganization or similar arrangement upon the bankruptcy or insolvency of such trade creditors, suppliers or
customers or (b) litigation, arbitration or other disputes with Persons; 
 (h) Investments existing on the
Issue Date; 
 (i) loans and advances to officers, directors, members and employees for business-related travel
expenses, moving expenses and other similar expenses, in each case, incurred in the ordinary course of business not to exceed $2.0 million in the aggregate at any time; 

(j) any Hedging Obligation; 
 (k) Investments consisting of intercompany loans from the Company and its Restricted Subsidiaries to Restricted Subsidiaries, including Restricted Subsidiaries that are not Guarantors; 

(l) Investments in any Person engaging in a Permitted Business in an aggregate amount at any one time outstanding not to
exceed $25.0 million; 

  
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 (m) guarantees otherwise permitted by the terms of this Indenture; and

 (n) Investments resulting from the acquisition of a Person that at the time of such acquisition held
instruments constituting Investments that were not acquired in contemplation of the acquisition of such Person. 

“Permitted Liens” means 
 (i) Liens securing Indebtedness under Credit Facilities incurred pursuant to clause (i) of the second paragraph of Section 4.09; 

(ii) Liens in favor of the Company or a Restricted Subsidiary; 

(iii) Liens on property or assets of, or any equity interest in or secured debt of, a Person existing at the time that
Person is merged with or into or consolidated with the Company or any Restricted Subsidiary of the Company; provided that such Liens were in existence prior to the contemplation of such merger or consolidation and do not extend to any assets
other than those of the Person merged into or consolidated with the Company or any Restricted Subsidiary; 
 (iv)
Liens on property (including Capital Stock) existing at the time the property was acquired by the Company or any Restricted Subsidiary of the Company, provided that such Liens were in existence prior to the contemplation of the acquisition of
property; 
 (v) Liens to secure the performance of statutory obligations, surety or appeal bonds, bid bonds,
payment bonds, performance and lien bonds or other obligations of a like nature incurred in the ordinary course of business, including any Permitted Bonding Obligations; 

(vi) Liens to secure Indebtedness (including Capital Lease Obligations) permitted by clause (iv) or (viii) of
the second paragraph of Section 4.09 covering, in the case of such clause (iv), only the assets (including any insurance, leases and charters relating to such assets, and any proceeds thereof) acquired, constructed, repaired or improved with
such Indebtedness; 
 (vii) Liens existing on the Issue Date and any renewals or extensions thereof on terms no
more restrictive and secured by the same collateral as existing on the Issue Date (other than Liens securing Indebtedness under Credit Facilities incurred pursuant to clause (i) of the second paragraph of Section 4.09); 

(viii) Liens for taxes, assessments or governmental charges or claims that are not yet delinquent or that are being
contested in good faith by appropriate proceedings promptly instituted and diligently concluded, provided that any reserve or other appropriate provision as shall be required in conformity with GAAP shall have been made therefor; 

(ix) Liens to secure Indebtedness of any Foreign Subsidiary permitted to be incurred under Section 4.09 covering only
the assets of such Foreign Subsidiary; 
 (x) Liens incurred in the ordinary course of business of the Company or
any Restricted Subsidiary of the Company with respect to obligations that do not exceed $20.0 million at any one time outstanding and that (a) are not incurred in connection with the borrowing of money or the obtaining of advances or credit
(other than trade credit in the ordinary course of business) and (b) do not in the aggregate materially detract from the value of the property or materially impair the use of the property in the operation of business by the Company or the
Restricted Subsidiary; 
 (xi) statutory Liens of landlords and Liens of carriers, warehousemen, mechanics,
suppliers, materialmen, repairmen and other Liens (including maritime Liens) imposed by law incurred in the ordinary course of business; 

  
 -21-

 (xii) Liens incurred or deposits made in the ordinary course of business in
connection with workers’ compensation, unemployment insurance and other types of social security or similar obligations, or to secure the performance of tenders, statutory or regulatory obligations, surety and appeal bonds, bids, leases,
government contracts, payment and performance and return-of-money bonds, bankers’ acceptances, and other similar obligations (exclusive of obligations for the payment of borrowed money); 

(xiii) judgment or attachment Liens not giving rise to an Event of Default; 

(xiv) easements, rights-of-way, municipal and zoning restrictions and other similar charges, title defects, encumbrances
or irregularities in respect of real property not interfering in any material respect with the ordinary course of the business of the Company or any of its Restricted Subsidiaries; 

(xv) any interest or title of a lessor under any lease, whether or not characterized as capital or operating; provided
that such Liens do not extend to any property or assets which are not leased property subject to such lease; 

(xvi) Liens securing Hedging Obligations; 

(xvii) Liens securing reimbursement obligations with respect to letters of credit and products and proceeds thereof;

 (xviii) Liens securing Permitted Refinancing Indebtedness which is incurred to refinance any Indebtedness
which has been secured by a Lien permitted under this Indenture and which has been incurred in accordance with the provisions of this Indenture; 
 (xix) Liens in favor of the Company or any of its Restricted Subsidiaries securing Indebtedness of any Restricted Subsidiary that is not a Guarantor; 

(xx) Liens with respect to current wages of the master and crew and for wages of a stevedore when employed directly by the
Company or any Subsidiary of the Company, or by the charterer, operator, master or agent of any of the vessels owned or operated by the Company or any Subsidiary of the Company; 

(xxi) Liens for salvage (including contract salvage); 

(xxii) Liens arising by operation of law or by contract in each case encumbering insurance policies and proceeds thereof
to secure the financing of premiums of such insurance policies; 
 (xxiii) Liens arising pursuant to a purchase
agreement or sale agreement securing the obligations under such purchase agreement or sale agreement and encumbering solely the assets that are to be sold in any asset sale permitted under Section 4.12; and 

(xxiiii) Liens with respect to bareboat charters, leases and licenses of assets in the ordinary course of business.

 “Permitted Refinancing Indebtedness” means any Indebtedness of the Company or any of its Restricted
Subsidiaries issued in exchange for, or to extend, refinance, renew, replace, defease or refund, other Indebtedness of the Company or any of its Restricted Subsidiaries (other than intercompany Indebtedness); provided that: 

(i) the principal amount (or accreted value, if applicable) of the Permitted Refinancing Indebtedness does not exceed the
principal amount of (or accreted value, if applicable), plus accrued interest on, the Indebtedness so extended, refinanced, renewed, replaced, defeased or refunded (plus the amount of reasonable expenses, premiums, penalties, fees and interest
incurred in connection therewith); 

  
 -22-

 (ii) if the final maturity date of the Indebtedness being refinanced is
earlier than the final maturity of the Notes, the Permitted Refinancing Indebtedness has a final maturity date later than the final maturity date of, and has a Weighted Average Life to Maturity equal to or greater than the Weighted Average Life to
Maturity of, the Indebtedness being extended, refinanced, renewed, replaced, defeased or refunded or (b) if the final maturity of the Indebtedness being refinanced is later than the final maturity of the Notes, the Permitted Refinancing
Indebtedness has a final maturity at least 91 days later than the Notes; 
 (iii) if the Indebtedness being
extended, refinanced, renewed, replaced, defeased or refunded is subordinated in right of payment to the Notes, the Permitted Refinancing Indebtedness has a final maturity date later than the final maturity date of, and is subordinated in right of
payment to, the Notes on terms at least as favorable to the Holders of Notes as those contained in the documentation governing the Indebtedness being extended, refinanced, renewed, replaced, defeased or refunded; and 

(iv) such Indebtedness is incurred either (a) by the Company or any Guarantor or (b) by the Restricted
Subsidiary who is the obligor on the Indebtedness being extended, refinanced, renewed, replaced, defeased or refunded. 

“Permitted Tax Distributions” means the payment of any distributions to permit direct or indirect beneficial owners of
shares of Capital Stock of the Company to pay federal, state or local income tax liabilities arising from income to the Company and attributable to them solely as a result of the Company’s and any intermediate entity through which the holder
owns such shares being a limited liability company, partnership or similar entity for federal income tax purposes. 

“Person” means an individual, partnership, corporation, unincorporated organization, trust or joint venture, or a
governmental agency or political subdivision thereof. 
 “Predecessor Note” of any particular Note means every
previous Note evidencing all or a portion of the same Indebtedness as that evidenced by such particular Note; and any Note authenticated and delivered under Section 2.07 in lieu of a lost, destroyed or stolen Note shall be deemed to evidence
the same Indebtedness as the lost, destroyed or stolen Note. 
 “Private Placement Legend” means the legend set
forth in Section 2.06(g)(i) hereof to be placed on all Notes issued under this Indenture except as otherwise permitted by the provisions of this Indenture. 
 “Pro Forma Cost Savings” means, with respect to any period, the reduction in costs that were (i) directly attributable to an asset acquisition and calculated on a basis that is
consistent with Regulation S-X under the Securities Act in effect and as applied as of the Issue Date, or (ii) were actually implemented by the business that was the subject of any such asset acquisition within six months of the date of the
asset acquisition and that are supportable and quantifiable by the underlying accounting records of such business, in each case as if such reductions in cost had been effected as of the beginning of the applicable period and, in the case of each of
(i) and (ii), are described, as provided below, in an officer’s certificate, as if all such reductions in costs had been effected as of the beginning of such period. Pro Forma Cost Savings described above shall be accompanied by a
certificate delivered to the Trustee from the Company’s Chief Financial Officer that outlines the specific actions taken or to be taken and the net cost savings achieved or to be achieved from each such action. 

“QIB” means a “qualified institutional buyer” as defined in Rule 144A. 

“Qualified Proceeds” means any of the following or any combination of the following: (i) cash, (ii) Cash
Equivalents, (iii) assets that are used or useful in a Permitted Business and (iv) the Capital Stock of any Person engaged in a Permitted Business if, in connection with the receipt by the Company or any Restricted Subsidiary of the
Company of such Capital Stock, (a) such Person becomes a Restricted Subsidiary of the Company or any Restricted Subsidiary of the Company or (b) such Person is merged, consolidated or amalgamated with or into, or transfers or conveys
substantially all of its assets to, or is liquidated into, the Company or any Restricted Subsidiary of the Company. 

  
 -23-

 “Registration Rights Agreement” means the Registration Rights Agreement
dated as of the Issue Date, among the Company, the Guarantors from time to time party thereto and Deutsche Bank Securities Inc., Merrill Lynch, Pierce, Fenner & Smith Incorporated, and Lazard Capital Markets LLC, as initial purchasers, as
such agreement may be amended, modified or supplemented from time to time and, with respect to any Additional Notes, one or more registration rights agreements between the Company and the other parties thereto, as such agreement(s) may be amended,
modified or supplemented from time to time, relating to rights given by the Company to the purchasers of Additional Notes to register such Additional Notes, or exchange such Additional Notes for registered Notes, under the Securities Act.

 “Regular Record Date” for the interest payable on any Interest Payment Date means the applicable date
specified as a “Record Date” on the face of the Note. 
 “Regulation S” means Regulation S
promulgated under the Securities Act. 
 “Regulation S Global Note” means a Global Note in the form of Exhibit
A hereto bearing the Global Note Legend and the Private Placement Legend and deposited with and registered in the name of the Depositary or its nominee, issued in a denomination equal to the outstanding principal amount of the Notes sold for initial
resale in reliance on Rule 903 of Regulation S. 
 “Regulation S Permanent Global Note” means a permanent
Global Note in the form of Exhibit A hereto bearing the Global Note Legend and the Private Placement Legend and deposited with or on behalf of and registered in the name of the Depositary or its nominee, issued in a denomination equal to the
outstanding principal amount of the Regulation S Temporary Global Note upon expiration of the Restricted Period. 

“Regulation S Temporary Global Note” means a temporary Global Note in the form of Exhibit A hereto bearing the
Global Note Legend, the Private Placement Legend and the Temporary Regulation S Legend and deposited with or on behalf of and registered in the name of the Depositary or its nominee, issued in a denomination equal to the outstanding principal amount
of the Notes initially sold in reliance on Rule 903 of Regulation S. 
 “Responsible Officer,” when used
with respect to the Trustee, means any officer within the Corporate Trust Department of the Trustee (or any successor group of the Trustee) with direct responsibility for the administration of this Indenture and also means, with respect to a
particular corporate trust matter, any other officer to whom such matter is referred because of his or her knowledge of and familiarity with the particular subject. 
 “Restricted Definitive Note” means one or more Definitive Notes bearing the Private Placement Legend. 
 “Restricted Global Notes” means 144A Global Notes, IAI Global Notes and Regulation S Global Notes. 
 “Restricted Investment” means an Investment other than a Permitted Investment. 
 “Restricted Subsidiary” of a Person means any Subsidiary of the referent Person that is not an Unrestricted Subsidiary. 

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

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

“Rule 903” means Rule 903 promulgated under the Securities Act. 

“Rule 904” means Rule 904 promulgated under the Securities Act. 

“S&P” means Standard & Poor’s Ratings Group, a division of McGraw Hill, Inc., or any successor to the
rating agency business thereof. 
 “Securities Act” means the Securities Act of 1933, as amended. 

  
 -24-

 “Secured Indebtedness” means any Indebtedness secured by a Lien.

 “Shelf Registration Statement” means the registration statement relating to the registration of the Notes
under Rule 415 of the Securities Act, as may be set forth in a Registration Rights Agreement. 
 “Significant
Subsidiary” means any Subsidiary that would be a “significant subsidiary” as defined in Article 1, Rule 1-02(w) of Regulation S-X, promulgated pursuant to the Act, as in effect on the Issue Date. 

“Stated Maturity” means, with respect to any installment of interest or principal (including any sinking fund payment)
on any series of Indebtedness, the date on which payment of interest or principal was scheduled to be paid in the original documentation governing such Indebtedness, and shall not include any contingent obligations to repay, redeem or repurchase any
such interest or principal prior to the date originally scheduled for their payment. 
 “Subsidiary” means,
with respect to any Person, (i) any corporation, association or other business entity of which more than 50% of the total voting power of shares of Capital Stock entitled (without regard to the occurrence of any contingency) to vote in the
election of directors, managers or trustees thereof is at the time owned or controlled, directly or indirectly, by such Person or one or more of the other Subsidiaries of that Person (or a combination thereof) and (ii) any partnership
(a) the sole general partner or the managing general partner of which is such Person or a Subsidiary of such Person or (b) the only general partners of which are such Person or of one or more Subsidiaries of such Person (or any combination
thereof). 
 “Temporary Regulation S Legend” means the legend set forth in Section 2.06(g)(iii) hereof to
be placed on the Regulation S Temporary Global Note. 
 “TIA” means the Trust Indenture Act of 1939, as
amended, and the rules and regulations thereunder. 
 “Total Tangible Assets” means, with respect to any
Person, the aggregate of all assets of such Person and its Restricted Subsidiaries as would be shown on the consolidated balance sheet of such Person in accordance with GAAP, less goodwill and intangibles. 

“Treasury Rate” means, as of any Redemption Date, the yield to maturity as of such Redemption Date of United States
Treasury securities with a constant maturity (as compiled and published in the most recent Federal Reserve Statistical Release H.15 (519) that has become publicly available at least two (2) Business Days prior to the Redemption Date (or,
if such Statistical Release is no longer published, any publicly available source of similar market data)) most nearly equal to the period from the Redemption Date to February 1, 2015; provided, however, that if the period from
the Redemption Date to February 1, 2015 is less than one year, the weekly average yield on actually traded United States Treasury securities adjusted to a constant maturity of one year will be used. 

“Trustee” means the Person named as the “Trustee” in the first paragraph of this instrument until a successor
Trustee shall have become such pursuant to the applicable provisions of this Indenture, and thereafter “Trustee” shall mean such successor Trustee. 
 “Unrestricted Definitive Notes” means one or more Definitive Notes that do not and are not required to bear the Private Placement Legend. 

“Unrestricted Global Notes” means one or more Global Notes that do not and are not required to bear the Private
Placement Legend and are deposited with and registered in the name of the Depositary or its nominee. 
 “Unrestricted
Subsidiary” means any Subsidiary of the Company that is designated by the Board of Directors of the Company as an Unrestricted Subsidiary pursuant to a Board Resolution, but only to the extent that such Subsidiary: 

(a) has no Indebtedness other than Non-Recourse Debt; 

  
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 (b) is not party to any agreement, contract, arrangement or understanding
with the Company or any Restricted Subsidiary of the Company unless the terms of any such agreement, contract, arrangement or understanding are no less favorable to the Company or such Restricted Subsidiary than those that might be obtained at the
time from Persons who are not Affiliates of the Company; 
 (c) is a Person with respect to which neither the
Company nor any of its Restricted Subsidiaries has any direct or indirect obligation (x) to subscribe for additional Equity Interests or (y) to maintain or preserve such Person’s financial condition or to cause such Person to achieve
any specified levels of operating results; 
 (d) has not guaranteed or otherwise directly or indirectly provided
credit support for any Indebtedness of the Company or any of its Restricted Subsidiaries; and 
 (e) has at least
one director on its Board of Directors that is not a director or executive officer of the Company or any of its Restricted Subsidiaries and has at least one executive officer that is not a director or executive officer of the Company or any of its
Restricted Subsidiaries. 
 “Voting Stock” of any Person as of any date means the Capital Stock of such Person
that is at the time entitled to vote in the election of the Board of Directors of such Person. 
 “Weighted Average Life
to Maturity” means, when applied to any Indebtedness at any date, the number of years obtained by dividing (i) the sum of the products obtained by multiplying (a) the amount of each then remaining installment, sinking fund, serial
maturity or other required payments of principal, including payment at final maturity, by (b) the number of years (calculated to the nearest one-twelfth) that will elapse between such date and the making of such payment, by (ii) the then
outstanding principal amount of such Indebtedness. 
 “Wholly Owned Restricted Subsidiary” of any Person means
a Restricted Subsidiary of such Person all of the outstanding Capital Stock or other ownership interests of which (other than directors’ qualifying shares) shall at the time be owned by such Person or by one or more Wholly Owned Restricted
Subsidiaries of such Person and one or more Wholly Owned Restricted Subsidiaries of such Person. 
 SECTION 1.02. Other
Definitions. 
  

			
	 Term
	  	Defined in
Section
	 “Acceleration Notice”
	  	6.02
	 “Affiliate Transaction”
	  	4.14
	 “Asset Sale Offer”
	  	4.12
	 “Authentication Order”
	  	2.02
	 “Benefited Party”
	  	10.01
	 “Change of Control Offer”
	  	4.17
	 “Change of Control Payment”
	  	4.17
	 “Covenant Defeasance”
	  	8.03
	 “defeasance trust”
	  	8.04
	 “DTC”
	  	2.03
	 “Excess Proceeds”
	  	4.12
	 “Event of Default”
	  	6.01
	 “Legal Defeasance”
	  	8.02
	 “losses”
	  	7.07
	 “Offer Amount”
	  	3.09
	 “Offer Period”
	  	3.09
	 “Offer to Purchase”
	  	3.09
	 “Paying Agent”
	  	2.03
	 “Payment Default”
	  	6.01
	 “Permitted Debt”
	  	4.09
	 “Purchase Date”
	  	3.09
	 “Redemption Date”
	  	3.07
	 “Registrar”
	  	2.03
	 “Restricted Payments”
	  	4.10
	 “Security Register”
	  	2.03
	 “Tax Payments”
	  	4.10

  
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 SECTION 1.03. Incorporation by Reference of Trust Indenture Act. 

(a) Whenever this Indenture refers to a provision of the TIA, the provision is incorporated by reference in and made a part of this
Indenture. 
 (b) The following TIA terms used in this Indenture have the following meanings: 

“indenture securities” means the Notes and the Guarantees; 

“indenture security holder” means a Holder; 
 “indenture to be qualified” means this Indenture; 

“indenture trustee” or “institutional trustee” means the Trustee; and 

“obligor” on the Notes means the Company, each Guarantor, and any successor obligor upon the Notes. 

(c) All other terms used in this Indenture that are defined by the TIA, defined by TIA reference to another statute or defined by
Commission rule under the TIA and not otherwise defined herein have the meanings so assigned to them either in the TIA, by another statute or Commission rule, as applicable. 
 SECTION 1.04. Rules of Construction. 
 (a) Unless the context
otherwise requires: 
 (i) a term has the meaning assigned to it; 

(ii) an accounting term not otherwise defined herein has the meaning assigned to it in accordance with GAAP; 

(iii) “or” is not exclusive; 

(iv) words in the singular include the plural, and in the plural include the singular; 

(v) all references in this instrument to “Articles,” “Sections” and other subdivisions are to the
designated Articles, Sections and subdivisions of this instrument as originally executed; 
 (vi) the words
“herein,” “hereof” and “hereunder” and other words of similar import refer to this Indenture as a whole and not to any particular Article, Section or other subdivision; 

(vii) “including” means “including without limitation”; 

(viii) provisions apply to successive events and transactions; and 

(ix) references to sections of or rules under the Securities Act, the Exchange Act or the TIA shall be deemed to include
substitute, replacement or successor sections or rules adopted by the Commission from time to time thereunder; and 
 (x) for the avoidance of doubt, any references to “interest” shall include any Additional Interest that may be payable. 

  
 -27-

 ARTICLE 2.  

THE NOTES 

SECTION 2.01. Form and Dating. 
 (a) General. The Notes and the Trustee’s certificate of authentication shall be substantially in the form included in Exhibit A hereto, which is hereby incorporated in and expressly
made part of this Indenture. The Notes may have notations, legends or endorsements required by law, exchange rule or usage in addition to those set forth on Exhibit A. Each Note shall be dated the date of its authentication. The Notes shall be in
denominations of $2,000 and integral multiples of $1,000 in excess thereof. The terms and provisions contained in the Notes shall constitute a part of this Indenture and the Company, the Guarantors and the Trustee, by their execution and delivery of
this Indenture, expressly agree to such terms and provisions and to be bound thereby. To the extent any provision of any Note conflicts with the express provisions of this Indenture, the provisions of this Indenture shall govern and be controlling.

 (b) Form of Notes. Notes shall be issued initially in global form and shall be substantially in the form of
Exhibit A attached hereto (including the Global Note Legend thereon and the “Schedule of Exchanges of Interests in the Global Note” attached thereto). Notes issued in definitive form shall be substantially in the form of Exhibit A
attached hereto (but without the Global Note Legend thereon and without the “Schedule of Exchanges of Interests in the Global Note” attached thereto). Each Global Note shall represent such aggregate principal amount of the outstanding
Notes as shall be specified therein and each 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 reduced or increased, as appropriate, to reflect exchanges and redemptions and transfers of interests therein. Any endorsement of a Global Note to reflect the amount of any increase or decrease in the aggregate
principal amount of outstanding Notes represented thereby shall be made by the Trustee or the Custodian, at the direction of the Trustee, in accordance with instructions given by the Holder thereof as required by Section 2.06 hereof.

 (c) Book-Entry Provisions. This Section 2.01(c) shall apply only to Global Notes deposited with the
Trustee, as custodian for the Depositary. Participants and Indirect Participants shall have no rights under this Indenture or any Global Note with respect to any Global Note held on their behalf by the Depositary or by the Trustee as custodian for
the Depositary, and the Depositary shall be treated by the Company, the Trustee and any agent of the Company or the Trustee as the absolute owner of such Global Note for all purposes whatsoever. Notwithstanding the foregoing, nothing herein shall
prevent the Company, the Trustee or any agent of the Company or the Trustee from giving effect to any written certification, proxy or other authorization furnished by the Depositary or impair, as between the Depositary and its Participants or
Indirect Participants, the Applicable Procedures or the operation of customary practices of the Depositary governing the exercise of the rights of a holder of a beneficial interest in any Global Note. 

(d) Euroclear and Clearstream Procedures Applicable. The provisions of the “Operating Procedures of the Euroclear
System” and “Terms and Conditions Governing Use of Euroclear” of Euroclear and the “General Terms and Conditions of Clearstream” and “Customer Handbook” of Clearstream shall be applicable to transfers of beneficial
interests in Global Notes that are held by Participants through Euroclear or Clearstream. 
 (e) Certificated
Securities. 
 (i) The Company shall issue Definitive Notes to all owners of beneficial interests in Global Notes if:
(1) at any time the Depositary notifies the Company that it is unwilling or unable to continue to act as Depositary for the Global Notes or if at any time the Depositary shall no longer be eligible to act as such because it ceases to be a
clearing agency registered under the Exchange Act, and, in either case, the Company shall not have appointed a successor Depositary within 120 days after the Company receives such notice or becomes aware of such ineligibility or (2) the
Company, at its option, determines that the Global Notes shall be exchanged for Definitive Notes and 

  
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delivers a written notice to such effect to the Trustee. Upon the occurrence of any of the events set forth in clauses (1) or (2) above, the Company shall execute, and, upon receipt of
an Authentication Order in accordance with Section 2.02 hereof, the Trustee shall authenticate and deliver, Definitive Notes, in authorized denominations, in an aggregate principal amount equal to the principal amount of the Global Notes in
exchange for such Global Notes. Upon the exchange of a Global Note for Definitive Notes, such Global Note shall be cancelled by the Trustee or an agent of the Company or the Trustee. 

(ii) The Company shall issue Definitive Notes to a Holder of, or an owner of a beneficial interest in, a Global Note in exchange for such
Global Note or beneficial interest, as the case may be, upon written request from a Holder of, or an owner of a beneficial interest in, a Global Note if a Default or Event of Default shall have occurred and be continuing. Upon the occurrence of the
foregoing, the Company shall execute, and, upon receipt of an Authentication Order in accordance with Section 2.02 hereof, the Trustee shall authenticate and deliver, Definitive Notes, in authorized denominations, in an aggregate principal
amount equal to the principal amount of the Global Note owned by such Holder or such owner of a beneficial interest. Upon the exchange of all or a portion of a Global Note for Definitive Notes, such Global Note shall be cancelled or correspondingly
reduced by the Trustee or an agent of the Company or the Trustee. In the event that the Definitive Notes are not issued to an owner of a beneficial interest in a Global Note promptly after the Company has received a request from such owner, the
Company expressly acknowledges, with respect to the right of any Holder to pursue a remedy pursuant to this Indenture, the right of any such owner to pursue such remedy with respect to the portion of the Global Note that represents such owner’s
beneficial interest as if such Definitive Notes had been issued. 
 (iii) Definitive Notes issued in exchange for a Global Note
pursuant to this Section 2.01 shall be registered in such names and in such authorized denominations as the Depositary, pursuant to instructions from its Participants or its Applicable Procedures, shall instruct the Trustee or an agent of the
Company or the Trustee in writing. The Trustee or such agent shall deliver such Definitive Notes to or as directed by the Persons in whose names such Definitive Notes are so registered or to the Depositary. 

SECTION 2.02. Execution and Authentication. 
 (a) One Officer shall execute the Notes on behalf of the Company by manual or facsimile signature. 
 (b) If an Officer whose signature is on a Note no longer holds that office at the time a Note is authenticated by the Trustee, the Note shall nevertheless be valid. 

(c) A Note shall not be valid until authenticated by the manual signature of the Trustee. The signature shall be conclusive evidence that
the Note has been authenticated under this Indenture. 
 (d) The Trustee shall, upon a written order of the Company signed by an
Officer (an “Authentication Order”) and the delivery of an Opinion of Counsel in a form reasonably acceptable to the Trustee (and substantially in the form delivered to the Trustee on the Issue Date), authenticate Notes for
issuance. 
 (e) The Trustee may appoint an authenticating agent acceptable to the Company to authenticate Notes. Unless
otherwise provided in such appointment, an authenticating agent may authenticate Notes whenever the Trustee may do so. Each reference in this Indenture to authentication by the Trustee includes authentication by such agent. An authenticating agent
shall have the same rights as the Trustee to deal with Holders, the Company or an Affiliate of the Company. 
 SECTION 2.03. Registrar and
Paying Agent. 
 (a) The Company shall maintain an office or agency where Notes may be presented for registration of
transfer or for exchange (“Registrar”) and an office or agency where Notes may be presented for payment (“Paying Agent”). The Registrar shall keep a register (the “Security
Register”) of the Notes and of their transfer and exchange. The Company may appoint one or more co-registrars and one or more additional paying agents. The term “Registrar” includes any co-registrar and the term “Paying
Agent” includes any additional paying agent. The Company may change any Paying Agent or Registrar without notice to any Holder. The Company shall notify the 

  
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Trustee in writing of the name and address of any Agent not a party to this Indenture. If the Company fails to appoint or maintain another entity as Registrar or Paying Agent, the Trustee shall
act as such. The Company or any of its Subsidiaries may act as Paying Agent or Registrar. 
 (b) The Company initially appoints
The Depository Trust Company (“DTC”) to act as Depositary with respect to the Global Notes. 
 (c) The
Company initially appoints the Trustee to act as Registrar and Paying Agent and to act as Custodian with respect to the Global Notes, and the Trustee hereby agrees so to initially act. 

(d) The Company will be responsible, in its good faith judgment, for making calculations called for under the Notes, including but not
limited to determination of redemption price, premium, if any, and any additional amounts or other amounts payable on the Notes. The Company will provide a schedule of its calculations to the Trustee when requested by the Trustee, and the Trustee is
entitled to rely conclusively on the accuracy of the Company’s calculations without independent verification. 
 SECTION 2.04. Paying
Agent To Hold Money in Trust. 
 The Company shall require each Paying Agent other than the Trustee to agree in writing
that the Paying Agent shall hold in trust for the benefit of Holders or the Trustee all money held by the Paying Agent for the payment of principal, premium, if any, or interest on the Notes, and shall notify the Trustee of any default by the
Company in making any such payment. While any such default continues, the Trustee may require a Paying Agent to pay all funds held by it relating to the Notes to the Trustee. The Company at any time may require a Paying Agent to pay all funds held
by it to the Trustee. Upon payment over to the Trustee, the Paying Agent (if other than the Company or a Subsidiary) shall have no further liability for such funds. If the Company or a Subsidiary acts as Paying Agent, it shall segregate and hold in
a separate trust fund for the benefit of the Holders all funds held by it as Paying Agent. Upon any Event of Default under Sections 6.01(vii) and (viii) hereof relating to the Company, the Trustee shall serve as Paying Agent for the Notes.

 SECTION 2.05. Holder Lists. 
 The Trustee shall preserve in as current a form as is reasonably practicable the most recent list available to it of the names and addresses of all Holders and shall otherwise comply with TIA
§312(a). If the Trustee is not the Registrar, the Company shall furnish or cause to be furnished to the Trustee at least seven (7) Business Days before each Interest Payment Date and at such other times as the Trustee may request in
writing, a list in such form and as of such date or such shorter time as the Trustee may allow, as the Trustee may reasonably require of the names and addresses of the Holders and the Company shall otherwise comply with TIA §312(a). 

SECTION 2.06. Transfer and Exchange. 
 (a) Transfer and Exchange of Global Notes. A Global Note may not be transferred as a whole except by the Depositary to a nominee of the Depositary, by a nominee of the Depositary to the
Depositary or to another nominee of the Depositary, or by the Depositary or any such nominee to a successor Depositary or a nominee of such successor Depositary. Upon the occurrence of any of the events set forth in Section 2.01(e) above,
Definitive Notes shall be issued in denominations of $2,000 or integral multiples of $1,000 in excess thereof and in such names as the Depositary shall instruct the Trustee in writing. Global Notes also may be exchanged or replaced, in whole or in
part, as provided in Sections 2.07 and 2.10 hereof. Except as provided above, every Note authenticated and delivered in exchange for, or in lieu of, a Global Note or any portion thereof, pursuant to this Section 2.06 or Section 2.07 or
2.10 hereof, shall be authenticated and delivered in the form of, and shall be, a Global Note. A Global Note may not be exchanged for another Note other than as provided in this Section 2.06(a), and beneficial interests in a Global Note may not
be transferred and exchanged other than as provided in Section 2.06(b), (c) or (f) hereof. 

  
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 (b) Transfer and Exchange of Beneficial Interests in the Global Notes. The
transfer and exchange of beneficial interests in the Global Notes shall be effected through the Depositary, in accordance with the provisions of this Indenture and the Applicable Procedures. Beneficial interests in the Restricted Global Notes shall
be subject to restrictions on transfer comparable to those set forth herein to the extent required by the Securities Act. Transfers of beneficial interests in Global Notes also shall require compliance with either clause (i) or (ii) below,
as applicable, as well as one or more of the other following clauses, as applicable: 
 (i) Transfer of
Beneficial Interests in the Same Global Note. Beneficial interests in any Restricted Global Note may be transferred to Persons who take delivery thereof in the form of a beneficial interest in the same Restricted Global Note in accordance with
the transfer restrictions set forth in the Private Placement Legend and any Applicable Procedures; provided, however, that prior to the expiration of the Distribution Compliance Period, transfers of beneficial interests in the
Regulation S Temporary Global Note may not be made to or for the account or benefit of a “U.S. Person” (as defined in Rule 902(k) of Regulation S) (other than a “distributor” (as defined in Rule 902(d) of the Regulation S)).
Beneficial interests in any Unrestricted Global Note may be transferred to Persons who take delivery thereof in the form of a beneficial interest in an Unrestricted Global Note. Except as may be required by any Applicable Procedures, no written
orders or instructions shall be required to be delivered to the Registrar to effect the transfers described in this Section 2.06(b)(i). 
 (ii) All Other Transfers and Exchanges of Beneficial Interests in Global Notes. In connection with all transfers and exchanges of beneficial interests that are not subject to
Section 2.06(b)(i) above, the transferor of such beneficial interest must deliver to the Registrar either (A)(1) a written order from a Participant or an Indirect Participant given to the Depositary in accordance with the Applicable
Procedures directing the Depositary to credit or cause to be credited a beneficial interest in another Global Note in an amount equal to the beneficial interest to be transferred or exchanged and (2) instructions given in accordance with the
Applicable Procedures containing information regarding the Participant account to be credited with such increase or (B)(1) if permitted under Section 2.06(a), a written order from a Participant or an Indirect Participant given to the
Depositary in accordance with the Applicable Procedures directing the Depositary to cause to be issued a Definitive Note in an amount equal to the beneficial interest to be transferred or exchanged and (2) instructions given by the Depositary
to the Registrar containing information regarding the Person in whose name such Definitive Note shall be registered to effect the transfer or exchange referred to in (B)(1) above. Upon consummation of an Exchange Offer by the Company in accordance
with Section 2.06(f) hereof, the requirements of this Section 2.06(b)(ii) shall be deemed to have been satisfied upon receipt by the Registrar of the instructions contained in the Letter of Transmittal delivered by the Holder of such
beneficial interests in the Restricted Global Notes. Upon satisfaction of all of the requirements for transfer or exchange of beneficial interests in Global Notes contained in this Indenture and the Notes or otherwise applicable under the Securities
Act, the Trustee shall adjust the principal amount of the relevant Global Note(s) pursuant to Section 2.06(h) hereof. 
 (iii) Transfer of Beneficial Interests in a Restricted Global Note to Another Restricted Global Note. A holder of a beneficial interest in a Restricted Global Note may transfer such beneficial
interest to a Person who takes delivery thereof in the form of a beneficial interest in another Restricted Global Note if the transfer complies with the requirements of Section 2.06(b)(ii) above and the Registrar receives the following:

 (A) if the transferee will take delivery in the form of a beneficial interest in the 144A Global Note, then
the transferor must deliver a certificate in the form of Exhibit B hereto, including the certifications in item (1) thereof or, if permitted by the Applicable Procedures, item (3) thereof; 

(B) if the transferee will take delivery in the form of a beneficial interest in the Regulation S Temporary Global Note or
the Regulation S Permanent Global Note, as the case may be, then the transferor must deliver a certificate in the form of Exhibit B hereto, including the certifications in item (2) thereof; and 

(C) if the transferee is required by the Applicable Procedures to take delivery in the form of a beneficial interest in
the IAI Global Note, then the transferor must deliver a certificate in the form of Exhibit B hereto, including the certifications and certificates and Opinion of Counsel required by item (3) thereof, if applicable. 

  
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 (iv) Transfer or Exchange of Beneficial Interests in a Restricted Global
Note for Beneficial Interests in an Unrestricted Global Note. A holder of a beneficial interest in a Restricted Global Note may exchange such beneficial interest for a beneficial interest in an Unrestricted Global Note or may transfer such
beneficial interest to a Person who takes delivery thereof in the form of a beneficial interest in an Unrestricted Global Note only if the exchange or transfer complies with the requirements of Section 2.06(b)(ii) above and: 

(A) such exchange or transfer is effected pursuant to the Exchange Offer in accordance with a Registration Rights
Agreement and the holder of the beneficial interest, in the case of an exchange, or the transferee, in the case of a transfer, makes any and all certifications required in the applicable Letter of Transmittal (or is deemed to have made such
certifications if delivery is made through the Applicable Procedures) as may be required by such Registration Rights Agreement; 
 (B) such transfer is effected pursuant to a Shelf Registration Statement in accordance with a Registration Rights Agreement; 

(C) such transfer is effected by a broker-dealer pursuant to an Exchange Offer Registration Statement in accordance with a
Registration Rights Agreement; or 
 (D) the Registrar receives the following: 

(1) if the holder of such beneficial interest in a Restricted Global Note proposes to exchange such beneficial interest
for a beneficial interest in an Unrestricted Global Note, a certificate from such holder in the form of Exhibit C hereto, including the certifications in item (1)(a) thereof; or 

(2) if the holder of such beneficial interest in a Restricted Global Note proposes to transfer such beneficial interest
to a Person who shall take delivery thereof in the form of a beneficial interest in an Unrestricted Global Note, a certificate from such holder in the form of Exhibit B hereto, including the certifications in item (4) thereof; 

and, in each such case set forth in this clause (D), if the Registrar so requests or if the Applicable Procedures so require, an Opinion
of Counsel in form reasonably acceptable to the Registrar to the effect that such exchange or transfer complies with the Securities Act and that the restrictions on transfer contained herein and in the Private Placement Legend are no longer required
in order to maintain compliance with the Securities Act. 
 If any such transfer is effected pursuant to clause
(B) or (D) above at a time when an Unrestricted Global Note has not yet been issued, the Company shall execute and, upon receipt of an Authentication Order in accordance with Section 2.02 hereof, the Trustee shall authenticate one or
more Unrestricted Global Notes in an aggregate principal amount equal to the aggregate principal amount of beneficial interests transferred pursuant to clause (B) or (D) above. 

(v) Transfer or Exchange of Beneficial Interests in an Unrestricted Global Note for Beneficial Interests in a
Restricted Global Note Prohibited. Beneficial interests in an Unrestricted Global Note may not be exchanged for, or transferred to Persons who take delivery thereof in the form of, beneficial interests in a Restricted Global Note. 

  
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 (c) Transfer and Exchange of Beneficial Interests in Global Notes for Definitive
Notes. 
 (i) Transfer or Exchange of Beneficial Interests in Restricted Global Notes to Restricted
Definitive Notes. Subject to Section 2.06(a) hereof, if any holder of a beneficial interest in a Restricted Global Note proposes to exchange such beneficial interest for a Restricted Definitive Note or to transfer such beneficial interest
to a Person who takes delivery thereof in the form of a Restricted Definitive Note, then, upon receipt by the Registrar of the following documentation: 
 (A) if the holder of such beneficial interest in a Restricted Global Note proposes to exchange such beneficial interest for a Restricted Definitive Note, a certificate from such holder in the form of
Exhibit C hereto, including the certifications in item (2)(a) thereof; 
 (B) if such beneficial interest is
being transferred to a QIB in accordance with Rule 144A, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (1) thereof; 

(C) if such beneficial interest is being transferred to a “non-U.S. Person” in an offshore transaction (as
defined in Section 902(k) of Regulation S) in accordance with Rule 903 or Rule 904, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (2) thereof; 

(D) if such beneficial interest is being transferred pursuant to an exemption from the registration requirements of the
Securities Act in accordance with Rule 144 under the Securities Act, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (3)(a) thereof; 

(E) if such beneficial interest is being transferred to an Institutional Accredited Investor in reliance on an exemption
from the registration requirements of the Securities Act other than those listed in clauses (B) through (D) above, a certificate to the effect set forth in Exhibit B hereto, including the certifications, certificates and Opinion of Counsel
required by item (3)(d) thereof, if applicable; or 
 (F) if such beneficial interest is being transferred
to the Company or any of its Subsidiaries, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (3)(b) thereof, 
 the Trustee shall reduce or cause to be reduced in a corresponding amount pursuant to Section 2.06(h) hereof, the aggregate principal amount of the applicable Restricted Global Note, and the Company
shall execute and, upon receipt of an Authentication Order in accordance with Section 2.02 hereof, the Trustee shall authenticate and deliver a Restricted Definitive Note in the appropriate principal amount to the Person designated by the
holder of such beneficial interest in the instructions delivered to the Registrar by the Depositary and the applicable Participant or Indirect Participant on behalf of such holder. Any Restricted Definitive Note issued in exchange for beneficial
interests in a Restricted Global Note pursuant to this Section 2.06(c)(i) shall be registered in such name or names and in such authorized denomination or denominations as the holder of such beneficial interest shall designate in such
instructions. The Trustee shall deliver such Restricted Definitive Notes to the Persons in whose names such Notes are so registered. Any Restricted Definitive Note issued in exchange for a beneficial interest in a Restricted Global Note pursuant to
this Section 2.06(c)(i) shall bear the Private Placement Legend and shall be subject to all restrictions on transfer contained therein. 
 (ii) Transfer or Exchange of Beneficial Interests in Restricted Global Notes to Unrestricted Definitive Notes. Subject to Section 2.06(a) hereof, a holder of a beneficial interest in a
Restricted Global Note may exchange such beneficial interest for an Unrestricted Definitive Note or may transfer such beneficial interest to a Person who takes delivery thereof in the form of an Unrestricted Definitive Note only if: 

(A) such exchange or transfer is effected pursuant to an Exchange Offer in accordance with a Registration Rights Agreement
and the holder of such beneficial interest, in the case of an exchange, or the transferee, in the case of a transfer, makes any and all certifications in the applicable Letter of Transmittal (or is deemed to have made such certifications if delivery
is made through the Applicable Procedures) as may be required by such Registration Rights Agreement; 
 (B) such
transfer is effected pursuant to a Shelf Registration Statement in accordance with a Registration Rights Agreement; 

  
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 (C) such transfer is effected by a broker-dealer pursuant to an Exchange
Offer Registration Statement in accordance with a Registration Rights Agreement; or 
 (D) the Registrar receives
the following: 
 (1) if the holder of such beneficial interest in a Restricted Global Note proposes to exchange
such beneficial interest for an Unrestricted Definitive Note, a certificate from such holder in the form of Exhibit C hereto, including the certifications in item (1)(b) thereof; or 

(2) if the holder of such beneficial interest in a Restricted Global Note proposes to transfer such beneficial interest
to a Person who shall take delivery thereof in the form of an Unrestricted Definitive Note, a certificate from such holder in the form of Exhibit B hereto, including the certifications in item (4) thereof; 

and, in each such case set forth in this clause (D), if the Registrar so requests or if the Applicable Procedures so require, an Opinion
of Counsel in form reasonably acceptable to the Registrar to the effect that such exchange or transfer complies with the Securities Act and that the restrictions on transfer contained herein and in the Private Placement Legend are no longer required
in order to maintain compliance with the Securities Act. 
 Upon satisfaction of any of the conditions of any of
the clauses of this Section 2.06(c)(ii), the Company shall execute and, upon receipt of an Authentication Order in accordance with Section 2.02 hereof, the Trustee shall authenticate and deliver an Unrestricted Definitive Note in the
appropriate principal amount to the Person designated by the holder of such beneficial interest in instructions delivered to the Registrar by the Depositary and the applicable Participant or Indirect Participant on behalf of such holder, and the
Trustee shall reduce or cause to be reduced in a corresponding amount pursuant to Section 2.06(h), the aggregate principal amount of the applicable Restricted Global Note. 

(iii) Transfer or Exchange of Beneficial Interests in Unrestricted Global Notes to Unrestricted Definitive Notes.
Subject to Section 2.06(a) hereof, if any holder of a beneficial interest in an Unrestricted Global Note proposes to exchange such beneficial interest for an Unrestricted Definitive Note or to transfer such beneficial interest to a Person who
takes delivery thereof in the form of an Unrestricted Definitive Note, then, upon satisfaction of the applicable conditions set forth in Section 2.06(b)(ii) hereof, the Trustee shall reduce or cause to be reduced in a corresponding amount
pursuant to Section 2.06(h) hereof, the aggregate principal amount of the applicable Unrestricted Global Note, and the Company shall execute, and, upon receipt of an Authentication Order in accordance with Section 2.02 hereof, the Trustee
shall authenticate and deliver an Unrestricted Definitive Note in the appropriate principal amount to the Person designated by the holder of such beneficial interest in instructions delivered to the Registrar by the Depositary and the applicable
Participant or Indirect Participant on behalf of such holder. Any Unrestricted Definitive Note issued in exchange for a beneficial interest pursuant to this Section 2.06(c)(iii) shall be registered in such name or names and in such authorized
denomination or denominations as the holder of such beneficial interest shall designate in such instructions. The Trustee shall deliver such Unrestricted Definitive Notes to the Persons in whose names such Notes are so registered. Any Unrestricted
Definitive Note issued in exchange for a beneficial interest pursuant to this Section 2.06(c)(iii) shall not bear the Private Placement Legend. 
 (d) Transfer and Exchange of Definitive Notes for Beneficial Interests in the Global Notes. 
 (i) Transfer or Exchange of Restricted Definitive Notes to Beneficial Interests in Restricted Global Notes. If any holder of a Restricted Definitive Note proposes to exchange such Restricted
Definitive Note for a beneficial interest in a Restricted Global Note or to transfer such Restricted Definitive Notes to a Person who takes delivery thereof in the form of a beneficial interest in a Restricted Global Note, then, upon receipt by the
Registrar of the following documentation: 
 (A) if the holder of such Restricted Definitive Note proposes to
exchange such Restricted Definitive Note for a beneficial interest in a Restricted Global Note, a certificate from such holder in the form of Exhibit C hereto, including the certifications in item (2)(b) thereof; 

  
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 (B) if such Restricted Definitive Note is being transferred to a QIB in
accordance with Rule 144A, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (1) thereof; 
 (C) if such Restricted Definitive Note is being transferred to a “non-U.S. Person” in an offshore transaction (as defined in Rule 902(k) of Regulation S) in accordance with Rule 903 or Rule 904,
a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (2) thereof; 
 (D) if such Restricted Definitive Note is being transferred pursuant to an exemption from the registration requirements of the Securities Act in accordance with Rule 144, a certificate to the effect set
forth in Exhibit B hereto, including the certifications in item (3)(a) thereof; 
 (E) on an exemption from
the registration requirements of the Securities Act other than those listed in clauses (B) through (D) above, a certificate to the effect set forth in Exhibit B hereto, including the certifications, certificates and Opinion of Counsel
required by item (3)(d) thereof, if applicable; or 
 (F) if such Restricted Definitive Note is being
transferred to the Company or any of its Subsidiaries, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (3)(b) thereof, 
 the Trustee shall cancel the Restricted Definitive Note, increase or cause to be increased in a corresponding amount pursuant to Section 2.06(h) hereof, the aggregate principal amount of, in the case
of clause (A) above, the appropriate Restricted Global Note, in the case of clause (B) above, a 144A Global Note, in the case of clause (C) above, a Regulation S Global Note, and in all other cases, an IAI Global Note. 

(ii) Transfer or Exchange of Restricted Definitive Notes to Beneficial Interests in Unrestricted Global Notes. A
holder of a Restricted Definitive Note may exchange such Restricted Definitive Note for a beneficial interest in an Unrestricted Global Note or transfer such Restricted Definitive Note to a Person who takes delivery thereof in the form of a
beneficial interest in an Unrestricted Global Note only if: 
 (A) such exchange or transfer is effected pursuant
to an Exchange Offer in accordance with a Registration Rights Agreement and the holder of such beneficial interest, in the case of an exchange, or the transferee, in the case of a transfer, makes any and all certifications in the applicable Letter
of Transmittal (or is deemed to have made such certifications if delivery is made through the Applicable Procedures) as may be required by such Registration Rights Agreement; 

(B) such transfer is effected pursuant to a Shelf Registration Statement in accordance with a Registration Rights
Agreement; 
 (C) such transfer is effected by a broker-dealer pursuant to an Exchange Offer Registration
Statement in accordance with a Registration Rights Agreement; or 
 (D) the Registrar receives the following:

 (1) if the holder of such Restricted Definitive Note proposes to exchange such Restricted Definitive Note for
a beneficial interest in an Unrestricted Global Note, a certificate from such holder in the form of Exhibit C hereto, including the certifications in item (1)(c) thereof; or 

(2) if the holder of such Restricted Definitive Note proposes to transfer such Restricted Definitive Note to a Person who
shall take delivery thereof in the form of a beneficial interest in an Unrestricted Global Note, a certificate from such Holder in the form of Exhibit B hereto, including the certifications in item (4) thereof; 

  
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 and, in each such case set forth in this clause (D), if the Registrar so requests or if the
Applicable Procedures so require, an Opinion of Counsel in form reasonably acceptable to the Registrar to the effect that such exchange or transfer shall be effected in compliance with the Securities Act and that the restrictions on transfer
contained herein and in the Private Placement Legend shall no longer be required in order to maintain compliance with the Securities Act. 
 Upon satisfaction of the conditions of any of the clauses in this Section 2.06(d)(ii), the Trustee shall cancel such Restricted Definitive Note and increase or cause to be increased in a
corresponding amount pursuant to Section 2.06(h) hereof, the aggregate principal amount of the Unrestricted Global Note. 
 (iii) Transfer or Exchange of Unrestricted Definitive Notes to Beneficial Interests in Unrestricted Global Notes. A holder of an Unrestricted Definitive Note may exchange such Unrestricted
Definitive Note for a beneficial interest in an Unrestricted Global Note or transfer such Unrestricted Definitive Note to a Person who takes delivery thereof in the form of a beneficial interest in an Unrestricted Global Note at any time. Upon
receipt of a request for such an exchange or transfer, the Trustee shall cancel the applicable Unrestricted Definitive Note and increase or cause to be increased in a corresponding amount pursuant to Section 2.06(h) hereof the aggregate
principal amount of one of the Unrestricted Global Notes. 
 (iv) Transfer or Exchange of Unrestricted
Definitive Notes to Beneficial Interests in Restricted Global Notes Prohibited. An Unrestricted Definitive Note may not be exchanged for, or transferred to Persons who take delivery thereof in the form of, beneficial interests in a Restricted
Global Note. 
 (e) Transfer and Exchange of Definitive Notes for Definitive Notes. Upon request by a holder of
Definitive Notes and such holder’s compliance with the provisions of this Section 2.06(e), the Registrar shall register the transfer or exchange of Definitive Notes. Prior to such registration of transfer or exchange, the requesting Holder
shall present or surrender to the Registrar the Definitive Notes duly endorsed or accompanied by a written instruction of transfer in form satisfactory to the Registrar duly executed by such holder. In addition, the requesting holder shall provide
any additional certifications, documents and information, as applicable, required pursuant to the following provisions of this Section 2.06(e). 
 (i) Transfer of Restricted Definitive Notes to Restricted Definitive Notes. Any Restricted Definitive Note may be transferred to and registered in the name of Persons who take delivery thereof in
the form of a Restricted Definitive Note if the Registrar receives the following: 
 (A) if the transfer will be
made pursuant to Rule 144A, a certificate in the form of Exhibit B hereto, including the certifications in item (1) thereof; 
 (B) if the transfer will be made pursuant to Rule 903 or Rule 904, a certificate in the form of Exhibit B hereto, including the certifications in item (2) thereof; and 

(C) if the transfer will be made pursuant to any other exemption from the registration requirements of the Securities Act,
a certificate in the form of Exhibit B hereto, including the certifications, certificates and Opinion of Counsel required by item (3) thereof, if applicable. 

(ii) Transfer or Exchange of Restricted Definitive Notes to Unrestricted Definitive Notes. Any Restricted
Definitive Note may be exchanged by the holder thereof for an Unrestricted Definitive Note or transferred to a Person or Persons who take delivery thereof in the form of an Unrestricted Definitive Note only if: 

(A) such exchange or transfer is effected pursuant to an Exchange Offer in accordance with a Registration Rights Agreement
and the holder, in the case of an exchange, or the transferee, in the case of a transfer, makes any and all certifications in the applicable Letter of Transmittal (or is deemed to have made such certifications if delivery is made through the
Applicable Procedures) as may be required by a Registration Rights Agreement; 

  
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 (B) any such transfer is effected pursuant to a Shelf Registration Statement
in accordance with a Registration Rights Agreement; 
 (C) any such transfer is effected by a broker-dealer
pursuant to an Exchange Offer Registration Statement in accordance with a Registration Rights Agreement; or 

(D) the Registrar receives the following: 

(1) if the holder of such Restricted Definitive Note proposes to exchange such Restricted Definitive Notes for an
Unrestricted Definitive Note, a certificate from such holder in the form of Exhibit C hereto, including the certifications in item (1)(d) thereof; or 
 (2) if the holder of such Restricted Definitive Notes proposes to transfer such Restricted Definitive Notes to a Person who shall take delivery thereof in the form of an Unrestricted Definitive Note, a
certificate from such holder in the form of Exhibit B hereto, including the certifications in item (4) thereof; 
 and, in
each such case set forth in this clause (D), if the Registrar so requests, an Opinion of Counsel in form reasonably acceptable to the Registrar to the effect that such exchange or transfer complies with the Securities Act and that the restrictions
on transfer contained herein and in the Private Placement Legend are no longer required in order to maintain compliance with the Securities Act. 
 Upon satisfaction of the conditions of any of the clauses of this Section 2.06(e)(ii), the Trustee shall cancel the prior Restricted Definitive Note and the Company shall execute, and upon receipt of
an Authentication Order in accordance with Section 2.02 hereof, the Trustee shall authenticate and deliver an Unrestricted Definitive Note in the appropriate aggregate principal amount to the Person designated by the holder of such prior
Restricted Definitive Note in instructions delivered to the Registrar by such holder. 
 (iii) Transfer of
Unrestricted Definitive Notes to Unrestricted Definitive Notes. A holder of Unrestricted Definitive Notes may transfer such Unrestricted Definitive Notes to a Person who takes delivery thereof in the form of an Unrestricted Definitive Note. Upon
receipt of a request to register such a transfer, the Registrar shall register the Unrestricted Definitive Notes pursuant to the instructions from the holder thereof. 
 (f) Exchange Offer. Upon the occurrence of an Exchange Offer in accordance with a Registration Rights Agreement, the Company shall issue and, upon receipt of an Authentication Order in
accordance with Section 2.02 hereof, the Trustee shall authenticate (A) one or more Unrestricted Global Notes in an aggregate principal amount equal to the aggregate principal amount of the beneficial interests in the applicable Restricted
Global Notes (1) tendered for acceptance by Persons that make any and all certifications in the applicable Letters of Transmittal (or are deemed to have made such certifications if delivery is made through the Applicable Procedures) as may be
required by such Registration Rights Agreement and (2) accepted for exchange in such Exchange Offer and (B) Unrestricted Definitive Notes in an aggregate principal amount equal to the aggregate principal amount of the Restricted Definitive
Notes tendered for acceptance by Persons who made the foregoing certifications and accepted for exchange in the Exchange Offer. Concurrently with the issuance of such Notes, the Trustee shall reduce or cause to be reduced in a corresponding amount
the aggregate principal amount of the applicable Restricted Global Notes, and the Company shall execute and, upon receipt of an Authentication Order and an Opinion of Counsel in accordance with Section 2.02 hereof, the Trustee shall
authenticate and deliver to the Persons designated by the holders of Restricted Definitive Notes so accepted Unrestricted Definitive Notes in the appropriate aggregate principal amount. 

  
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 (g) Legends. The following legends shall appear on the face of all Global
Notes and Definitive Notes issued under this Indenture unless specifically stated otherwise in the applicable provisions of this Indenture. 
 (i) Private Placement Legend. 
 (A) Except as permitted by
clause (B) below, each Global Note and each Definitive Note (and all Notes issued in exchange therefor or substitution thereof) shall bear the legend in substantially the following form: 

“THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE U.S. SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND,
ACCORDINGLY, MAY NOT BE OFFERED OR SOLD WITHIN THE UNITED STATES OR TO, OR FOR THE ACCOUNT OR BENEFIT OF, U.S. PERSONS EXCEPT AS SET FORTH BELOW. BY ITS ACQUISITION HEREOF, THE HOLDER (1) REPRESENTS THAT (A) IT IS A “QUALIFIED
INSTITUTIONAL BUYER” (AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT), OR (B) IT IS NOT A U.S. PERSON AND IS ACQUIRING THIS SECURITY IN AN OFFSHORE TRANSACTION IN COMPLIANCE WITH RULE 904 UNDER THE SECURITIES ACT, (2) AGREES THAT IT
WILL NOT WITHIN ONE YEAR AFTER THE ORIGINAL ISSUANCE OF THIS SECURITY RESELL OR OTHERWISE TRANSFER THIS SECURITY EXCEPT (A) TO THE COMPANY OR ANY SUBSIDIARY THEREOF, (B) INSIDE THE UNITED STATES TO A QUALIFIED INSTITUTIONAL BUYER IN
COMPLIANCE WITH RULE 144A UNDER THE SECURITIES ACT, (C) OUTSIDE THE UNITED STATES IN AN OFFSHORE TRANSACTION IN COMPLIANCE WITH RULE 904 UNDER THE SECURITIES ACT (IF AVAILABLE), (D) PURSUANT TO THE EXEMPTION FROM REGISTRATION PROVIDED BY
RULE 144 UNDER THE SECURITIES ACT (IF AVAILABLE), (E) IN ACCORDANCE WITH ANOTHER EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT (AND BASED UPON AN OPINION OF COUNSEL IF THE COMPANY SO REQUESTS), OR (F) PURSUANT TO AN
EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT AND (3) AGREES THAT IT WILL GIVE TO EACH PERSON TO WHOM THIS SECURITY IS TRANSFERRED A NOTICE SUBSTANTIALLY TO THE EFFECT OF THIS LEGEND. AS USED HEREIN, THE TERMS “OFFSHORE
TRANSACTION,” “UNITED STATES” AND “U.S. PERSON” HAVE THE MEANINGS GIVEN TO THEM BY REGULATION S UNDER THE SECURITIES ACT.” 
 (B) Notwithstanding the foregoing, any Global Note or Definitive Note issued pursuant to clauses (b)(iv), (c)(ii), (c)(iii), (d)(ii), (d)(iii), (e)(ii), (e)(iii) or (f) of this Section 2.06 (and
all Notes issued in exchange therefor or substitution thereof) shall not bear the Private Placement Legend. 

(ii) Global Note Legend. Each Global Note shall bear a legend in substantially the following form: 

“THIS GLOBAL NOTE IS HELD BY THE DEPOSITARY (AS DEFINED IN THE INDENTURE GOVERNING THIS NOTE) OR ITS NOMINEE IN
CUSTODY FOR THE BENEFIT OF THE BENEFICIAL OWNERS HEREOF, AND IS NOT TRANSFERABLE TO ANY PERSON UNDER ANY CIRCUMSTANCES EXCEPT THAT (I) THE TRUSTEE MAY MAKE SUCH NOTATIONS HEREON AS MAY BE REQUIRED PURSUANT TO SECTION 2.06 OF THE
INDENTURE, (II) THIS GLOBAL NOTE MAY BE EXCHANGED IN WHOLE BUT NOT IN PART PURSUANT TO SECTION 2.06(a) OF THE INDENTURE, (III) THIS GLOBAL NOTE MAY BE DELIVERED TO THE TRUSTEE FOR CANCELLATION PURSUANT TO SECTION 2.11 OF THE
INDENTURE AND (IV) THIS GLOBAL NOTE MAY BE TRANSFERRED TO A SUCCESSOR DEPOSITARY WITH THE PRIOR WRITTEN CONSENT OF THE COMPANY. 

  
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 UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR NOTES IN DEFINITIVE
FORM, THIS NOTE MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE 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. UNLESS THIS NOTE 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 NOTE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS MAY BE REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH
OTHER ENTITY AS MAY BE 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.” 
 (iii) Regulation S Temporary Global Note Legend. The Regulation S Temporary
Global Note shall bear a legend in substantially the following form: 
 “THE RIGHTS ATTACHING TO THIS REGULATION S TEMPORARY
GLOBAL NOTE, AND THE CONDITIONS AND PROCEDURES GOVERNING ITS EXCHANGE FOR DEFINITIVE NOTES, ARE AS SPECIFIED IN THE INDENTURE (AS DEFINED HEREIN). NEITHER THE HOLDER NOR ANY BENEFICIAL OWNER OF THIS REGULATION S TEMPORARY GLOBAL NOTE SHALL BE
ENTITLED TO RECEIVE PAYMENT OF INTEREST HEREON.” 
 (h) Cancellation and/or Adjustment of Global Notes. At
such time as all beneficial interests in a particular Global Note have been exchanged for Definitive Notes or a particular Global Note has been redeemed, repurchased or cancelled in whole and not in part, each such Global Note shall be retained and
cancelled by the Trustee in accordance with Section 2.11 hereof. At any time prior to such cancellation, if any beneficial interest in a Global Note is exchanged for or transferred to a Person who will take delivery thereof in the form of a
beneficial interest in another Global Note or for Definitive Notes, the aggregate principal amount of Notes represented by such Global Note shall be reduced accordingly and an endorsement shall be made on such Global Note by the Trustee or by the
Depositary at the direction of the Trustee to reflect such reduction; and if the beneficial interest is being exchanged for or transferred to a Person who will take delivery thereof in the form of a beneficial interest in another Global Note, the
aggregate principal amount of such other Global Note shall be increased accordingly and an endorsement shall be made on the “Schedule of Exchanges of Interests” in such Global Note by the Trustee or by the Depositary at the direction of
the Trustee to reflect such increase. 
 (i) General Provisions Relating to Transfers and Exchanges. 

(i) No service charge shall be made to a holder of a beneficial interest in a Global Note or to a Holder of a Definitive
Note for any registration of transfer or exchange, but the Company may require payment of a sum sufficient to cover any transfer tax or similar governmental charge payable in connection therewith (other than any such transfer taxes or similar
governmental charge payable upon exchange or transfer pursuant to Sections 2.10, 3.06, 4.12, 4.17 and 9.05 hereof). 
 (ii) All Global Notes and Definitive Notes issued upon any registration of transfer or exchange of Global Notes or Definitive Notes shall be the valid obligations of the Company, evidencing the same debt
as the Global Notes or Definitive Notes surrendered upon such registration of transfer or exchange and shall be entitled to all of the benefits of this Indenture equally and proportionately with all other Notes duly issued hereunder. 

(iii) Neither the Registrar nor the Company shall be required (A) to issue, to register the transfer of or to
exchange any Notes during a period beginning at the opening of business 15 days before the day of any selection of Notes for redemption under Section 3.02 hereof and ending at the close of business on the date of selection, (B) to register
the transfer of or to exchange any Note so selected for redemption in whole or in part, except the unredeemed portion of any Note being redeemed in part or (C) to register the transfer of or to exchange a Note between a record date (including a
Regular Record Date) and the next succeeding Interest Payment Date. 

  
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 (iv) Prior to due presentment for the registration of transfer of any Note,
the Trustee, any Agent and the Company may deem and treat the Person in whose name any Note is registered as the absolute owner of such Note for the purpose of receiving payment of principal of, premium, if any, and interest on such Note and for all
other purposes, in each case regardless of any notice to the contrary. 
 (v) All certifications, certificates
and Opinions of Counsel required to be submitted to the Registrar pursuant to this Section 2.06 to effect a registration of transfer or exchange may be submitted by facsimile. 

(vi) Neither the Trustee nor the Registrar shall have any duty to monitor the Company’s compliance with or have any
responsibility with respect to the Company’s compliance with any federal or state securities laws. The Trustee shall have no obligation or duty to monitor, determine or inquire as to compliance with any restrictions on transfer imposed under
this Indenture or under applicable law with respect to any transfer of any interest in any Notes (including any transfers between or among the Depositary’s participants or beneficial owners of interests in any Global Note) other than to require
delivery of such certificates and other documentation, as is expressly required by, and to do so if and when expressly required by, the terms of this Indenture and to examine the same to determine substantial compliance as to form with the express
requirements hereof. 
 SECTION 2.07. Replacement Notes. 
 If any mutilated Note is surrendered to the Trustee or the Company and the Trustee receives evidence to its satisfaction of the destruction, loss or theft of any Note, the Company shall issue and, upon
receipt of an Authentication Order in accordance with Section 2.02 hereof, the Trustee shall authenticate a replacement Note. If required by the Trustee or the Company, the Holder of such Note shall provide indemnity that is sufficient, in the
judgment of the Trustee or the Company, to protect the Company, the Trustee, any Agent and any authenticating agent from any loss that any of them may suffer in connection with such replacement. If required by the Company, such Holder shall
reimburse the Company for its reasonable expenses in connection with such replacement. 
 Every replacement Note issued in
accordance with this Section 2.07 shall be the valid obligation of the Company, evidencing the same debt as the destroyed, lost or stolen Note, and shall be entitled to all of the benefits of this Indenture equally and proportionately with all
other Notes duly issued hereunder. 
 SECTION 2.08. Outstanding Notes. 

(a) The Notes outstanding at any time shall be the entire principal amount of Notes represented by all of the Global Notes and Definitive
Notes authenticated by the Trustee except for those cancelled by it, those delivered to it for cancellation, those subject to reductions in beneficial interests effected by the Trustee in accordance with Section 2.06 hereof, and those described
in this Section 2.08 as not outstanding. Except as set forth in Section 2.09 hereof, a Note shall not cease to be outstanding because the Company or an Affiliate of the Company holds the Note; provided, however, that Notes
held by the Company or a Subsidiary of the Company shall be deemed not to be outstanding for purposes of Section 3.07(b) hereof. 
 (b) If a Note is replaced pursuant to Section 2.07 hereof, it shall cease to be outstanding unless the Trustee receives proof satisfactory to it that the replaced Note is held by a bona fide
purchaser. 
 (c) If the principal amount of any Note is considered paid under Section 4.01 hereof, it shall cease to be
outstanding and interest on it shall cease to accrue. 
 (d) If the Paying Agent (other than the Company, a Subsidiary or an
Affiliate of any thereof) holds, on a Redemption Date, a Purchase Date or a maturity date, funds sufficient to pay Notes payable on that date, then on and after that date such Notes shall be deemed to be no longer outstanding and shall cease to
accrue interest. 

  
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 SECTION 2.09. Treasury Notes. 

In determining whether the Holders of the required principal amount of Notes have concurred in any direction, waiver or consent, Notes
owned by the Company, or by any Affiliate of the Company, shall be considered as though not outstanding, except that for the purposes of determining whether the Trustee shall be protected in relying on any such direction, waiver or consent, only
Notes that a Responsible Officer of the Trustee actually knows are so owned shall be so disregarded. 
 SECTION 2.10. Temporary
Notes. 
 Until certificates representing Notes are ready for delivery, the Company may prepare and, upon receipt of an
Authentication Order in accordance with Section 2.02 hereof, the Trustee shall authenticate temporary Notes. Temporary Notes shall be substantially in the form of Definitive Notes but may have variations that the Company considers appropriate
for temporary Notes and as shall be reasonably acceptable to the Trustee. Without unreasonable delay, the Company shall prepare and the Trustee shall authenticate Global Notes or Definitive Notes in exchange for temporary Notes, as applicable.

 Holders of temporary Notes shall be entitled to all of the benefits of this Indenture equally and proportionately with all
other Notes duly issued hereunder. 
 SECTION 2.11. Cancellation. 

The Company at any time may deliver Notes to the Trustee for cancellation. The Registrar and Paying Agent shall forward to the Trustee any
Notes surrendered to them for registration of transfer, exchange or payment. Upon sole direction of the Company, the Trustee and no one else shall cancel all Notes surrendered for registration of transfer, exchange, payment, replacement or
cancellation and shall dispose of such cancelled Notes (subject to the record retention requirements of the Exchange Act or other applicable laws) in its customary manner. The Company may not issue new Notes to replace Notes that it has paid or that
have been delivered to the Trustee for cancellation. 
 SECTION 2.12. Payment of Interest; Defaulted Interest. 

If the Company defaults in a payment of interest on the Notes, it shall pay the defaulted interest in any lawful manner plus, to the
extent lawful, interest payable on the defaulted interest, to the Persons who are Holders on a subsequent special record date, in each case at the rate provided in the Notes and in Section 4.01 hereof. The Company shall notify the Trustee in
writing of the amount of defaulted interest proposed to be paid on each Note and the date of the proposed payment. The Company shall fix or cause to be fixed each such special record date and payment date; provided that no such special record
date shall be less than 10 days prior to the related Interest Payment Date for such defaulted interest. At least 15 days before the special record date, the Company (or, upon the written request of the Company, the Trustee in the name and at the
expense of the Company) shall mail or cause to be mailed to Holders a notice that states the special record date, the related Interest Payment Date and the amount of such interest to be paid. 
 SECTION 2.13. CUSIP or ISIN Numbers. 
 The Company in issuing the
Notes may use “CUSIP” and/or “ISIN” numbers (if then generally in use), and, if so, the Trustee shall use “CUSIP” and/or “ISIN” numbers in notices, including notices of redemption or Offers to Purchase as a
convenience to Holders; provided, however, 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 as contained in any notice of a redemption or notice of an
Offer to Purchase and that reliance may be placed only on the other identification numbers printed on the Notes, and any such redemption or Offer to Purchase shall not be affected by any defect in or omission of such numbers. The Company shall
promptly notify the Trustee of any change in the “CUSIP” and/or “ISIN” numbers. 

  
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 SECTION 2.14. Additional Interest. 

If Additional Interest is payable on the Notes by the Company pursuant to a Registration Rights Agreement and paragraph 1 of the Notes,
the Company shall deliver to the Trustee on or before the Regular Record Date for each Interest Payment Date such Additional Interest is payable an Officers’ Certificate setting forth in reasonable detail (i) the amount of such Additional
Interest that is payable and (ii) the date on which such interest is payable pursuant to Section 4.01 hereof. Unless and until a Responsible Officer of the Trustee receives such a certificate or instruction or direction from the Holders in
accordance with the terms of this Indenture, the Trustee may assume without inquiry that no Additional Interest is payable. The foregoing shall not prejudice the rights of the Holders with respect to their entitlement to Additional Interest as
otherwise set forth in this Indenture or the Notes and pursuing any action against the Company directly or otherwise directing the Trustee to take any such action in accordance with the terms of this Indenture and the Notes. If the Company has paid
Additional Interest directly to the Persons entitled to it, the Company shall deliver to the Trustee an Officers’ Certificate setting forth the details of such payment. The Trustee may provide a copy of such Officers’ Certificate or other
notice received from the Company relating to Additional Interest to any Holder upon request. 
 SECTION 2.15. Issuance of Additional
Notes. 
 The Company shall be entitled, subject to its compliance with Section 4.09 hereof, to issue Additional
Notes under this Indenture which shall have identical terms as the Initial Notes issued on the date hereof, other than with respect to the date of issuance, issue price and rights under a related Registration Rights Agreement, if any. The Initial
Notes issued on the date hereof, any Additional Notes and all Exchange Notes issued in exchange therefor shall be treated as a single class for all purposes under this Indenture, including directions, waivers, amendments, consents, redemptions and
Offers to Purchase. 
 With respect to any Additional Notes, the Company shall set forth in a Board Resolution and an
Officers’ Certificate, a copy of each of which shall be delivered to the Trustee, the following information: 
 (a) the aggregate principal amount of such Additional Notes to be authenticated and delivered pursuant to this Indenture; 

(b) the issue price, the issue date and the CUSIP and/or ISIN number of such Additional Notes; and 

(c) whether such Additional Notes shall be subject to the restrictions on transfer set forth in Section 2.06 hereof
relating to Restricted Global Notes and Restricted Definitive Notes. 
 SECTION 2.16. Record Date. 

The record date for purposes of determining the identity of Holders of Notes entitled to vote or consent to any action by vote or consent
or permitted under this Indenture shall be determined as provided for in TIA Section 316(c). 
 ARTICLE 3.

 REDEMPTION AND PREPAYMENT 
 SECTION 3.01. Notices to Trustee. 
 If the Company elects to redeem
Notes pursuant to the optional redemption provisions of Section 3.07 hereof, it shall furnish to the Trustee, at least 30 days but not more than 60 days before a Redemption Date (or such shorter period as allowed by the Trustee), an
Officers’ Certificate setting forth (a) the applicable section of this Indenture pursuant to which the redemption shall occur, (b) the Redemption Date, (c) the principal amount of Notes to be redeemed and (d) the
redemption price. 

  
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 SECTION 3.02. Selection of Notes To Be Redeemed. 

If less than all of the Notes are to be redeemed at any time, subject to Applicable Procedures, the Trustee shall select the Notes to be
redeemed among the Holders of the Notes in compliance with the requirements of the principal national securities exchange, if any, on which the Notes are listed or, if the Notes are not so listed, on a pro rata basis, by lot or in accordance
with any other method the Trustee deems fair and appropriate. In the event of partial redemption by lot, the particular Notes to be redeemed shall be selected, unless otherwise provided herein, not less than 30 nor more than 60 days prior to
the Redemption Date by the Trustee from the outstanding Notes not previously called for redemption. 
 The Trustee shall
promptly notify the Company in writing of the Notes selected for redemption and, in the case of any Note selected for partial redemption, the principal amount thereof to be redeemed. Notes and portions of Notes selected shall be in amounts of $2,000
or integral multiples of $1,000 in excess thereof; except that if all of the Notes of a Holder are to be redeemed, the entire outstanding amount of Notes held by such Holder, even if not an integral multiple of $1,000, shall be redeemed. Except as
provided in the preceding sentence, provisions of this Indenture that apply to Notes called for redemption also apply to portions of Notes called for redemption. 
 SECTION 3.03. Notice of Redemption. 
 At least 30 days but not
more than 60 days prior to a Redemption Date, the Company shall mail or cause to be mailed, by first class mail, a notice of redemption to each Holder whose Notes are to be redeemed at such Holder’s registered address appearing in the
Security Register. 
 The notice shall identify the Notes to be redeemed and shall state: 

(a) the Redemption Date; 
 (b) the appropriate calculation of the redemption price, but need not include the redemption price itself; the actual redemption price shall be set forth in an Officers’ Certificate delivered to the
Trustee no later than two (2) Business Days prior to the Redemption Date; 
 (c) if any Note is being
redeemed in part, the portion of the principal amount of such Note to be redeemed and that, after the Redemption Date upon surrender of such Note, if applicable, a new Note or Notes in principal amount equal to the unredeemed portion shall be issued
upon cancellation of the original Note, or in the case of a Global Note an adjustment will be made on the “Schedule of Exchanges of Interests” attached thereto; 

(d) the name and address of the Paying Agent; 

(e) that Notes called for redemption must be surrendered to the Paying Agent to collect the redemption price; 

(f) that, unless the Company defaults in making such redemption payment, interest on Notes called for redemption ceases to
accrue on and after the Redemption Date; 
 (g) the applicable section of this Indenture pursuant to which
the Notes called for redemption are being redeemed; and 
 (h) that no representation is made as to the
correctness of the CUSIP and/or ISIN numbers, if any, listed in such notice or printed on the Notes. 
 At the Company’s
request, the Trustee shall give the notice of redemption in the Company’s name and at its expense; provided, however, that the Company shall have delivered to the Trustee, at least 45 days (or such shorter period allowed by the
Trustee), prior to the Redemption Date, an Officers’ Certificate requesting that the Trustee give such notice (in the name and at the expense of the Company) and setting forth the information to be stated in such notice as provided in this
Section 3.03. 

  
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 SECTION 3.04. Effect of Notice of Redemption. 

Once notice of redemption is mailed in accordance with Section 3.03 hereof, Notes called for redemption shall become irrevocably due
and payable on the Redemption Date at the redemption price. A notice of redemption may not be conditional. 
 SECTION 3.05. Deposit of
Redemption Price. 
 On or prior to 11:00 a.m. Eastern time on the Business Day prior to any Redemption Date, the Company
shall deposit with the Trustee or with the Paying Agent money sufficient to pay the redemption price of and, if applicable, accrued and unpaid interest on all Notes to be redeemed on that Redemption Date. The Trustee or the Paying Agent shall
promptly, and in any event within two (2) Business Days after the Redemption Date, return to the Company any money deposited with the Trustee or the Paying Agent by the Company in excess of the amounts necessary to pay the redemption price of,
and accrued and unpaid interest, if any, on, all Notes to be redeemed. 
 If the Company complies with the provisions of the
preceding paragraph, on and after the Redemption Date, interest shall cease to accrue on the Notes or the portions of Notes called for purchase or redemption in accordance with Section 2.08(d) hereof, whether or not such Notes are presented for
payment. If a Note is redeemed on or after a Regular Record Date but on or prior to the related Interest Payment Date, then any accrued and unpaid interest, if any, shall be paid to the Person in whose name such Note was registered at the close of
business on such Regular Record Date. If any Note called for redemption shall not be so paid upon surrender for redemption because of the failure of the Company to comply with the preceding paragraph, interest shall be paid on the unpaid principal
from the Redemption Date until such principal is paid, and to the extent lawful on any interest not paid on such unpaid principal, in each case at the rate provided in the Notes and in Section 4.01 hereof. 

SECTION 3.06. Notes Redeemed in Part. 
 Upon surrender of a Note that is redeemed in part, the Company shall issue and, upon the Company’s written request, the Trustee shall authenticate for the Holder at the expense of the Company a new
Note equal in principal amount to the unredeemed portion of the Note surrendered, or in the case of a Global Note an adjustment will be made on the “Schedule of Exchanges of Interests” attached thereto. 

SECTION 3.07. Optional Redemption. 
 (a) Except as set forth in clauses (b) and (c) of this Section 3.07, the Notes shall not be redeemable at the option of the Company prior to February 1, 2015. Beginning on
February 1, 2015, the Company may redeem all or a portion of the Notes, at once or over time, after giving the notice required pursuant to Section 3.03 hereof, at the redemption prices (expressed as percentages of principal amount) set
forth below, in cash, plus accrued and unpaid interest and Additional Interest, if any, on the Notes redeemed, to the applicable Redemption Date (subject to the right of Holders of record on the relevant Regular Record Date to receive interest due
on the relevant Interest Payment Date), if redeemed during the twelve-month period commencing on February 1 of the years indicated below: 
  

					
	 Year
	  	Percentage	 
	 2015
	  	 	103.688	% 
	 2016
	  	 	101.844	% 
	 2017 and thereafter
	  	 	100.000	% 

 (b) At any time prior to
February 1, 2014, the Company may (but will not have the obligation to) on any one or more occasions redeem up to 35% of the original principal amount of the Notes issued under this Indenture at a redemption price (expressed as a percentage of
principal amount) equal to 107.375% of the principal 

  
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amount thereof, plus accrued and unpaid interest and Additional Interest, if any, thereon to the Redemption Date (subject to the right of Holders of record on the relevant Regular Record Date to
receive interest due on the relevant Interest Payment Date), with the net cash proceeds of one or more Equity Offerings, provided that at least 65% of the aggregate principal amount of the Notes initially issued under this Indenture remain
outstanding immediately after the occurrence of the redemption (excluding Notes held by the Company and its Subsidiaries); provided, further, that the redemption shall occur within 180 days of the date of the closing of the Equity
Offering. 
 (c) At any time prior to February 1, 2015, the Company may redeem the Notes, in whole or in part after giving
the notice required pursuant to Section 3.03 hereof, in cash, at a redemption price equal to 100% of the principal amount of the Notes redeemed plus the Applicable Premium as of, and accrued and unpaid interest, if any, to the date of
redemption (the “Redemption Date”) (subject to the right of the Holders of record on the relevant Regular Record Date to receive interest due on the relevant Interest Payment Date). 

(d) Any redemption pursuant to this Section 3.07 shall be made pursuant to the provisions of Sections 3.01 through 3.06 hereof.

 SECTION 3.08. Mandatory Redemption. 
 Except as set forth in Sections 4.12 and 4.17 hereof, the Company shall not be required to make mandatory redemption or sinking fund payments with respect to the Notes. 

SECTION 3.09. Offer to Purchase. 
 (a) In the event that, pursuant to Section 4.12 or 4.17 hereof, the Company shall be required to commence an Asset Sale Offer or Change of Control Offer (each, an “Offer to
Purchase”), it shall follow the procedures specified below. 
 (b) The Company shall cause a notice of the Offer to
Purchase to be sent at least once to the Dow Jones News Service or similar business news service in the United States. 

(c) The Company shall commence the Offer to Purchase by sending, by first-class mail, with a copy to the Trustee, to each Holder at such
Holder’s address appearing in the Security Register, a notice the terms of which shall govern the Offer to Purchase stating: 
 (i) that the Offer to Purchase is being made pursuant to this Section 3.09 and Section 4.12 or Section 4.17, as the case may be, and, in the case of a Change of Control Offer, that a Change
of Control has occurred, the circumstances and relevant facts regarding the Change of Control and that a Change of Control Offer is being made pursuant to Section 4.17; 

(ii) the principal amount of Notes required to be purchased pursuant to Section 4.12 or Section 4.17, as the
case may be (the “Offer Amount”), the purchase price set forth in Section 4.12 or Section 4.17, as applicable, the Offer Period and the Purchase Date (each as defined below); 

(iii) except as provided in clause (ix), that all Notes timely tendered and not withdrawn shall be accepted for payment;

 (iv) that any Note not tendered or accepted for payment shall continue to accrue interest; 

(v) that, unless the Company defaults in making such payment, any Note accepted for payment pursuant to the Offer to
Purchase shall cease to accrue interest after the Purchase Date; 
 (vi) that Holders electing to have a Note
purchased pursuant to an Offer to Purchase may only elect to have Notes purchased in minimum principal amounts of $2,000 or integral multiples of $1,000 in excess thereof; 

  
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 (vii) that Holders electing to have a Note purchased pursuant to any Offer
to Purchase shall be required to surrender the Note, with the form entitled “Option of Holder to Elect Purchase” on the reverse of the Note completed, or transfer by book-entry transfer, to the Company, the Depositary, if appointed by the
Company, or a Paying Agent at the address specified in the notice before the close of business on the third Business Day before the Purchase Date; 
 (viii) that Holders shall be entitled to withdraw their election if the Company, the Depositary or the Paying Agent, as the case may be, receives, not later than the expiration of the Offer Period, a
telegram, facsimile transmission or letter setting forth the name of the Holder, the principal amount of the Note (or portions thereof) the Holder delivered for purchase and a statement that such Holder is withdrawing his election to have such Note
purchased; 
 (ix) that, in the case of an Asset Sale Offer, if the aggregate principal amount of Notes
surrendered by Holders exceeds the Offer Amount, the Company shall select the Notes to be purchased on a pro rata basis (with such adjustments as may be deemed appropriate by the Company so that only Notes in denominations of $2,000 or
integral multiples of $1,000 in excess thereof shall be purchased) (or if the Note is a Global Note, pursuant to the Applicable Procedures of the Depositary); 
 (x) that Holders whose Notes were purchased in part shall be issued new Notes equal in principal amount to the unpurchased portion of the Notes surrendered (or transferred by book-entry transfer); and

 (xi) any other procedures the Holders must follow in order to tender their Notes (or portions thereof) for
payment and the procedures that Holders must follow in order to withdraw an election to tender Notes (or portions thereof) for payment. 
 (d) The Offer to Purchase shall remain open for a period of at least 30 days but no more than 60 days following its commencement, except to the extent that a longer period is required by applicable law
(the “Offer Period”). No later than five (5) Business Days (and in any event no later than the 60th day following the Change of Control) after the termination of the Offer Period (the “Purchase
Date”), the Company shall purchase the Offer Amount or, if less than the Offer Amount has been tendered, all Notes tendered in response to the Offer to Purchase. Payment for any Notes so purchased shall be made in the same manner as
interest payments are made. The Company shall publicly announce the results of the Offer to Purchase on the Purchase Date. 

(e) On or prior to the Purchase Date, the Company shall, to the extent lawful: 

(i) accept for payment (on a pro rata basis to the extent necessary in connection with an Asset Sale Offer), the
Offer Amount of Notes or portions of Notes properly tendered pursuant to the Offer to Purchase, or if less than the Offer Amount has been tendered, all Notes tendered; 

(ii) deposit with the Paying Agent funds in an amount equal to the purchase price as set forth in Section 4.12 or
Section 4.17, as applicable, in respect of all Notes or portions of Notes properly tendered; and 
 (iii)
deliver or cause to be delivered to the Trustee the Notes so accepted together with an Officers’ Certificate stating the aggregate principal amount of Notes or portions of Notes being purchased by the Company and that such Notes or portions
thereof were accepted for payment by the Company in accordance with the terms of this Section 3.09. 
 (f) The Depositary
or the Paying Agent (or the Company, if acting as the Paying Agent), as the case may be, shall promptly (but in the case of a Change of Control, not later than 60 days from the date of the Change of Control) deliver to each tendering Holder the
purchase price as set forth in Section 4.12 or Section 4.17, as applicable. In the event that any portion of the Notes surrendered is not purchased by the Company, the Company shall promptly execute and issue a new Note or adjust the
“Schedule of Exchanges of Interests” on a Global Note in a principal amount equal to such unpurchased portion of the Note surrendered, and, upon receipt of an 

  
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Authentication Order in accordance with Section 2.02 hereof, the Trustee shall authenticate and deliver (or cause to be transferred by book-entry) such new Note to such Holder;
provided, however, that each such new Note shall be in a principal amount of $2,000 or an integral multiple of $1,000 in excess thereof. 
 (g) If the Purchase Date is on or after a Regular Record Date and on or before the related Interest Payment Date, any accrued and unpaid interest shall be paid to the Person in whose name a Note is
registered at the close of business on such Regular Record Date, and no additional interest shall be payable to Holders who tender Notes pursuant to the Offer to Purchase. 
 (h) The Company shall comply, to the extent applicable, with the requirements of Rule 14e-1 under the Exchange Act and any other securities laws and regulations thereunder to the extent those laws and
regulations are applicable in connection with the Offer to Purchase. To the extent that the provisions of any securities laws or regulations conflict with Sections 4.12 or 4.17, as applicable, this Section 3.09 or other provisions of this
Indenture, the Company shall comply with applicable securities laws and regulations and shall not be deemed to have breached its obligations under Sections 4.12 or 4.17, as applicable, this Section 3.09 or such other provision by virtue of such
compliance. 
 (i) Other than as specifically provided in this Section 3.09, any purchase pursuant to this
Section 3.09 shall be made in accordance with the provisions of Section 3.01 through 3.06 hereof. 
 ARTICLE 4.

 COVENANTS 
 SECTION 4.01. Payment of Notes. 
 The Company shall pay or cause to
be paid the principal of, premium, if any, and interest on, the Notes on the dates and in the manner provided in this Indenture and the Notes. Principal, premium, if any, and interest shall be considered paid on the date due if the Paying Agent, if
other than the Company or a Subsidiary thereof, holds as of 11:00 a.m. Eastern Time on the due date money deposited by the Company in immediately available funds and designated for and sufficient to pay all principal, premium, if any, and interest
then due. Such Paying Agent shall return to the Company promptly, and in any event, no later than five (5) Business Days following the date of payment, any money that exceeds such amount of principal, premium, if any, and interest paid on the
Notes. The Company shall pay Additional Interest, if any, in the same manner, on the dates and in the amounts set forth in a Registration Rights Agreement, the Notes and the Indenture. If a payment date is a Legal Holiday at a place of payment,
payment may be made at that place on the next succeeding day that is not a Legal Holiday, and no interest shall accrue on such payment for the intervening period. 
 The Company shall pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue principal and premium, if any, from time to time on demand at a rate that is
1% per annum in excess of the rate then in effect; it shall pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue installments of interest (without regard to any applicable grace periods), from
time to time on demand at the same rate to the extent lawful. 
 Interest shall be computed on the basis of a 360-day year of
twelve 30-day months. 
 SECTION 4.02. Maintenance of Office or Agency. 

(a) The Company shall maintain an office or agency (which may be an office or drop facility of the Trustee or an affiliate of the Trustee,
Registrar or co-registrar) where Notes may be presented or surrendered for registration of transfer or for exchange and where notices and demands to or upon the Company in respect of the Notes and this Indenture may be served. The Company shall 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 of the Trustee, and the Company hereby appoints the Trustee as its agent to receive all such presentations, surrenders, notices
and demands. 

  
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 (b) The Company may also from time to time designate 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. The Company shall give prompt written notice to the Trustee of any such designation or rescission and of any change in
the location of any such other office or agency. 
 (c) The Company hereby designates the Corporate Trust Office of the Trustee,
as one such office, drop facility or agency of the Company in accordance with Section 2.03 hereof. 
 SECTION 4.03.
Reports. 
 Whether or not required to file by the rules and regulations of the Commission, so long as any Notes
are outstanding, the Company will file with the Commission (unless the Commission will not accept such filing) and furnish to the Trustee and Holders of Notes 
 (a) all quarterly and annual financial and other information that would be required to be contained in a filing with the Commission on Forms 10-Q and 10-K if the Company was required to file these Forms,
including a “Management’s Discussion and Analysis of Financial Condition and Results of Operations” that describes the financial condition and results of operations of the Company and its consolidated Subsidiaries (showing in
reasonable detail, either on the face of the financial statements or in the footnotes, the financial condition and results of operations of the Company and its Restricted Subsidiaries separate from the financial condition and results of operations
of the Unrestricted Subsidiaries of the Company) and, with respect to the annual information only, a report thereon by the Company’s certified independent accountants and 

(b) all current reports that would be required to be filed with the Commission on Form 8-K if the Company were required to
file these reports, in each case within the time periods specified in the Commission’s rules and regulations; 
 provided,
however, that the Company will not be required to furnish such information to the Trustee or the registered Holders of the Notes to the extent such information is electronically filed with the Commission and is electronically available to the
public free of cost. 
 In addition, (i) at all times the Commission does not accept the filings provided for in the
preceding sentence or (ii) the filings provided for in the preceding sentence do not contain the information required to be delivered upon request pursuant to Rule 144A(d)(4) under the Securities Act, then, in each case, the Company will, for
so long as any Notes remain outstanding, furnish to the Holders and to securities analysts and prospective investors, upon their request, the information required to be delivered pursuant to Rule 144A(d)(4) under the Securities Act. 

Delivery of such reports, information and documents to the Trustee hereunder 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 rely exclusively on Officers’ Certificates or certificates delivered pursuant to Section 4.04). 
 SECTION 4.04.
Compliance Certificate. 
 (a) The Company shall deliver to the Trustee, within 90 days after the end of each
fiscal year, an Officers’ Certificate that need not comply with Section 12.05 stating that a review of the activities of the Company, the Guarantors and their respective Subsidiaries during the preceding fiscal year has been made under the
supervision of the signing Officers with a view to determining whether the Company, the Guarantors and their respective Subsidiaries have kept, observed, performed and fulfilled their obligations under this Indenture, and further stating, as to each
such Officer signing such certificate, that to the best of his or her knowledge the Company, 

  
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the Guarantors and their respective Subsidiaries have kept, observed, performed and fulfilled each and every covenant contained in this Indenture and are not in default in the performance or
observance of any of the terms, provisions and conditions of this Indenture (or, if a Default or Event of Default shall have occurred, describing all such Defaults or Events of Default of which he or she may have knowledge and what action the
Company is taking or proposes to take with respect thereto) and that to the best of his or her knowledge no event has occurred and remains in existence by reason of which payments on account of the principal of, premium, if any, or interest on the
Notes is prohibited or if such event has occurred, a description of the event and what action the Company is taking or proposes to take with respect thereto. 
 (b) The Company shall otherwise comply with TIA §314(a)(4). 
 (c) The Company
shall deliver to the Trustee, upon any Officer of the Company becoming aware thereof, written notice in the form of an Officers’ Certificate of any Default or Event of Default, its status and what action the Company is taking or proposes to
take with respect thereto. 
 SECTION 4.05. Taxes. 
 The Company shall pay, and shall cause each of its Subsidiaries to pay, prior to delinquency, all material taxes, assessments and governmental levies, except such as are being contested in good faith and
by appropriate proceedings or where the failure to effect such payment is not adverse in any material respect to the Holders. 
 SECTION 4.06.
Stay, Extension and Usury Laws. 
 The Company and the Guarantors covenant (to the extent that they may lawfully do
so) that they 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 wherever enacted, now or at any time hereafter in force, that may affect the covenants or
the performance of this Indenture; and the Company and the Guarantors (to the extent that they may lawfully do so) hereby expressly waive all benefit or advantage of any such law, and covenant that they shall not, by resort to any such law, hinder,
delay or impede the execution of any power herein granted to the Trustee, but shall suffer and permit the execution of every such power as though no such law has been enacted. 
 SECTION 4.07. Corporate Existence. 
 Subject to Article 5
hereof, the Company shall do or cause to be done all things necessary to preserve and keep in full force and effect (i) its corporate existence, and the corporate, partnership or other existence of each Restricted Subsidiary, in accordance with
the respective organizational documents (as the same may be amended from time to time) of the Company or any such Restricted Subsidiary and (ii) the rights (charter and statutory), licenses and franchises of the Company and its Restricted
Subsidiaries; provided, however, that the Company shall not be required to preserve any such right, license or franchise, or the corporate, partnership or other existence of any Restricted Subsidiary, if the Board of Directors shall
determine that the preservation thereof is no longer desirable in the conduct of the business of the Company and its Restricted Subsidiaries, taken as a whole, and that the loss thereof is not adverse in any material respect to the Holders of the
Notes, or that such preservation is not necessary in connection with any transaction not prohibited by this Indenture. 
 SECTION 4.08.
Payments for Consent. 
 Neither the Company nor any of its Restricted Subsidiaries will, directly or indirectly,
pay or cause to be paid any consideration, whether by way of interest, fee or otherwise, to any Holder of any Notes for or as an inducement to any consent, waiver or amendment of any of the terms or provisions of this Indenture or the Notes unless
the consideration is offered to be paid or is paid to all Holders of the Notes that consent, waive or agree to amend in the time frame set forth in the solicitation documents relating to the consent, waiver or agreement. 

  
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 SECTION 4.09. Incurrence of Indebtedness and Issuance of Disqualified Stock. 

The Company will not, and will not permit any of its Restricted Subsidiaries to, directly or indirectly, create, incur, issue, assume,
guarantee or otherwise become directly or indirectly liable, contingently or otherwise, with respect to (collectively, “incur”) any Indebtedness (including Acquired Debt), and the Company will not issue any Disqualified Stock
and will not permit any of its Restricted Subsidiaries to issue any shares of preferred stock; provided, however, that the Company may incur Indebtedness (including Acquired Debt) or issue shares of Disqualified Stock and the
Company’s Restricted Subsidiaries may incur Indebtedness or issue shares of preferred stock if the Fixed Charge Coverage Ratio for the Company’s most recently ended four full fiscal quarters for which internal financial statements are
available immediately preceding the date on which the additional Indebtedness is incurred or the Disqualified Stock or preferred stock is issued would have been at least 2.0 to 1, determined on a pro forma basis (including a pro forma
application of the net proceeds therefrom), as if the additional Indebtedness had been incurred, or the Disqualified Stock or preferred stock had been issued, as the case may be, at the beginning of such four-quarter period; provided that
the maximum principal amount of Indebtedness (including Acquired Debt), Disqualified Stock and preferred stock that may be incurred or issued, as applicable, pursuant to this paragraph by Restricted Subsidiaries that are not Guarantors shall not
exceed $50.0 million. 
 The provisions of the first paragraph of this Section 4.09 will not apply to the incurrence of any
of the following items of Indebtedness (collectively, “Permitted Debt”): 
 (i) the
incurrence by the Company or any Restricted Subsidiary of Indebtedness and reimbursement obligations under letters of credit under the Credit Facilities (including any guarantee of the Indebtedness by any Restricted Subsidiary); provided that
the aggregate principal amount of all Indebtedness outstanding under all Credit Facilities after giving effect to the incurrence does not exceed an amount equal to $250.0 million (with letters of credit being deemed to have a principal amount equal
to the maximum face amount thereunder) plus (in the case of any refinancing) the aggregate amount of fees, underwriting discounts, premiums and other costs and expenses incurred in connection with the refinancing, less the aggregate amount of all
Net Proceeds of Asset Sales applied by the Company or any Restricted Subsidiary to repay any term Indebtedness under Credit Facilities pursuant to Section 4.12; 

(ii) the incurrence by the Company and its Restricted Subsidiaries of the Existing Indebtedness; 

(iii) the incurrence by the Company and the Guarantors of Indebtedness evidenced by the Initial Notes and related
Guarantees, and any Exchange Notes and related Guarantees issued in respect of Notes outstanding under this Indenture; 
 (iv) the incurrence by the Company or any of its Restricted Subsidiaries of Indebtedness represented by Capital Lease Obligations, mortgage or construction financings or purchase money obligations or
similar financings or refinancings thereof, in each case incurred for the purpose of financing or refinancing all or any part of the purchase price or cost of design, installation, construction, repair or improvement of property (real or personal),
plant or equipment used in the business of the Company or any Restricted Subsidiary (whether through the direct acquisition, construction, repair or improvement of such assets or the acquisition of Equity Interests of any Person acquiring,
constructing, repairing, improving or otherwise owning such assets), in an aggregate principal amount (which amount may, but need not, be incurred in whole or in part after the Issue Date under the Credit Facilities) not to exceed the greater of:
(a) $75.0 million or (b) 12.5% of Total Tangible Assets (measured at the time of each incurrence of any such Indebtedness), in either case outstanding at any time; 

(v) the incurrence by the Company or any of its Restricted Subsidiaries of Permitted Refinancing Indebtedness in exchange
for, or the net proceeds of which are used to refund, refinance or replace Indebtedness (other than intercompany Indebtedness) that would have been permitted by this Indenture to be incurred under the first paragraph hereof or clauses (ii), (iii),
(v) and (xiv) of this paragraph; 
 (vi) the incurrence by the Company or any of its Restricted
Subsidiaries of intercompany Indebtedness between or among the Company and any of its Restricted Subsidiaries; provided, however, that (A) if the Company is the obligor on this Indebtedness, the Indebtedness is expressly
subordinated to the prior payment in full in cash of all Obligations with respect to the Notes, (B) if any Guarantor is the 

  
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obligor on this Indebtedness to a Restricted Subsidiary that is not a Guarantor, the Indebtedness is expressly subordinated to the prior payment in full in cash of all Obligations with respect to
the Guarantee of such Guarantor and (C) (i) any subsequent issuance or transfer of Equity Interests that results in any Indebtedness being held by a Person other than the Company or a Restricted Subsidiary and (ii) any sale or other
transfer of any Indebtedness to a Person that is neither the Company nor a Restricted Subsidiary shall be deemed, in each case, to constitute an incurrence of Indebtedness by the Company or the Restricted Subsidiary, as the case may be, that was not
permitted by this clause (vi); 
 (vii) the incurrence by the Company or any of its Restricted Subsidiaries of
Hedging Obligations (other than for speculative purposes); 
 (viii) the incurrence by the Company or any of its
Restricted Subsidiaries of Indebtedness (in addition to Indebtedness permitted by other clauses of this paragraph) in an aggregate principal amount (or accreted value, as applicable) at any time outstanding, including all Permitted Refinancing
Indebtedness incurred to refund, refinance or replace any Indebtedness incurred pursuant to this clause (viii), not to exceed $50.0 million; 
 (ix) the guarantee by the Company or any Restricted Subsidiary of Indebtedness of the Company or a Restricted Subsidiary, which Indebtedness was permitted to be incurred by another provision of this
Section 4.09; provided that in the case of a guarantee by any Restricted Subsidiary that is not a Guarantor, such Restricted Subsidiary complies with Section 4.15; 

(x) Indebtedness of the Company or a Restricted Subsidiary owed to (including obligations in respect of letters of credit
for the benefit of) any Person in connection with worker’s compensation, health, disability or other employee benefits or property, casualty or liability insurance provided by such Person to the Company or the Restricted Subsidiary, pursuant to
reimbursement or indemnification obligations to such Person, in each case incurred in the ordinary course of business and consistent with past practices; 
 (xi) the incurrence of Permitted Bonding Obligations; 
 (xii) the
incurrence of Indebtedness arising from agreements of the Company or any Restricted Subsidiary providing for indemnification, adjustment of purchase price or similar obligations, in each case, incurred or assumed in connection with the acquisition
or disposition of any business, assets or Capital Stock of a Restricted Subsidiary; provided that with respect to any such disposition, the maximum aggregate liability of this Indebtedness shall at no time exceed the gross proceeds actually
received by the Company and its Restricted Subsidiaries in connection with any such disposition; 
 (xiii) the
issuance by any of the Company’s Restricted Subsidiaries to the Company or to any of its Restricted Subsidiaries of shares of preferred stock; provided, however, that: 

(a) any subsequent issuance or transfer of Equity Interests that results in any such preferred stock being held by a
Person other than the Company or a Restricted Subsidiary of the Company; and 
 (b) any sale or other transfer of
any such preferred stock to a Person that is not either the Company or a Restricted Subsidiary of the Company; 
 will be deemed,
in each case, to constitute an issuance of such preferred stock by such Restricted Subsidiary that was not permitted by this clause (xiii); 
 (xiv) the incurrence by the Company or any of its Restricted Subsidiaries of Indebtedness (in addition to Indebtedness permitted by other clauses of this paragraph) to finance the repurchase of the
Designated Vessels, which are utilized at the time of incurrence by the Company or a Restricted Subsidiary under operating leases, in each case on terms not materially less favorable on the whole than those set forth in the repurchase provisions
contained in such operating leases as in effect as of the Issue Date; 

  
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 (xv) the guarantee by the Company or a Restricted Subsidiary of Indebtedness
of any entity which is not wholly owned by the Company or any of its Restricted Subsidiaries; provided that the maximum liability of the Company or a Restricted Subsidiary thereunder does not exceed $15.0 million at any time; and 

(xvi) Indebtedness incurred as a result of the accounting for an extension of the term of any lease existing on the Issue
Date as a capital lease under GAAP as a result of such extension. 
 For purposes of determining compliance with this
Section 4.09, in the event that an item of Indebtedness meets the criteria of more than one of the categories of Permitted Debt described in clauses (i) through (xvi) above or is entitled to be incurred pursuant to the first paragraph
of this Section 4.09, the Company shall, in its sole discretion, classify (or later reclassify in whole or in part, in its sole discretion) that item of Indebtedness in any manner that complies with this Section 4.09. Accrual of interest,
accretion or amortization of original issue discount, the payment of interest on any Indebtedness in the form of additional Indebtedness with the same terms, and the payment of dividends on Disqualified Stock in the form of additional shares of the
same class of Disqualified Stock will not be deemed to be an incurrence of Indebtedness or an issuance of Disqualified Stock for purposes of this Section 4.09; provided, in each case, that the amount is included in Fixed Charges of the
Company as accrued. Notwithstanding any other provision of this Section 4.09, the maximum amount of Indebtedness that the Company or any Restricted Subsidiary may incur pursuant to this Section 4.09 shall not be deemed to be exceeded
solely as a result of fluctuations in exchange rates or currency values. The principal amount of any Indebtedness supported by a letter of credit issued under a Credit Facility in accordance with clause (i) above shall not be deemed a separate
incurrence of Indebtedness for purposes of this Section 4.09, but only to the extent of the stated amount of such letter of credit. 
 The amount of any Indebtedness outstanding as of any date will be: 

(1) the accreted value of the Indebtedness in the case of any Indebtedness issued with original issue discount;

 (2) the maximum fixed redemption liability with respect to any Disqualified Stock or preferred stock of a
Restricted Subsidiary; 
 (3) the principal amount of the Indebtedness, in the case of any other Indebtedness;
and 
 (4) in respect of Indebtedness of another Person secured by a Lien on the assets of the specified Person,
the lesser of: 
 (a) the Fair Market Value of such asset at the date of determination, and 

(b) the amount of the Indebtedness of the other Person. 
 SECTION 4.10. Restricted Payments. 
 The Company will not, and will
not permit any of its Restricted Subsidiaries to, directly or indirectly: 
 (i) declare or pay any dividend or
make any other payment or distribution on account of the Company’s or any of its Restricted Subsidiaries’ Equity Interests (including, without limitation, any payment in connection with any merger or consolidation involving the Company or
any of its Restricted Subsidiaries) or to the direct or indirect holders of the Company’s or any of its Restricted Subsidiaries’ Equity Interests in their capacity as such (other than, in each case, dividends or distributions payable in
Equity Interests (other than Disqualified Stock) of the Company or dividends or distributions payable to the Company or a Restricted Subsidiary of the Company); 

  
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 (ii) purchase, redeem or otherwise acquire or retire for value (including,
without limitation, in connection with any merger or consolidation involving the Company) any Equity Interests of the Company (other than Equity Interests owned by the Company or any Restricted Subsidiary of the Company) or any direct or indirect
parent of the Company; 
 (iii) make any payment on or with respect to, or purchase, redeem, defease or otherwise
acquire or retire for value any Indebtedness of the Company that is contractually subordinated to the Notes or to the Guarantees (other than any subordinated Indebtedness held by the Company or any Restricted Subsidiary), except a payment of
interest or principal at Stated Maturity; or 
 (iv) make any Restricted Investment 

(all these payments and other actions set forth in clauses (i) through (iv) above being collectively referred to as “Restricted
Payments”), unless: 
 (a) at the time of and after giving effect to the Restricted Payment, no
Default or Event of Default shall have occurred and is continuing or would occur as a consequence of the Restricted Payment; and 
 (b) the Company would, at the time of the Restricted Payment and after giving it pro forma effect as if the Restricted Payment had been made at the beginning of the applicable four-quarter period,
have been permitted to incur at least $1.00 of additional Indebtedness pursuant to the Fixed Charge Coverage Ratio test set forth in the first paragraph of Section 4.09; and 

(c) the Restricted Payment, together with the aggregate amount of all other Restricted Payments made by the Company and
its Restricted Subsidiaries after December 22, 2003 (excluding Restricted Payments permitted by clauses (ii), (iii), (iv), (vii), (viii), (x), (xi), (xii), (xiv) and (xv) of the next succeeding paragraph), is less than the sum,
without duplication, of 
 (i) 50% of the Consolidated Net Income of the Company for the period (taken as one
accounting period) from the first day of the fiscal quarter of the Company commencing on October 1, 2003 to the end of the Company’s most recently ended fiscal quarter for which internal financial statements are available at the time of
the Restricted Payment (or, if Consolidated Net Income for the period is a deficit, less 100% of the deficit), plus 
 (ii) 100% of the aggregate Fair Market Value of Qualified Proceeds received by the Company since December 22, 2003 as a contribution to its equity capital or from the issue or sale of Equity
Interests of the Company (other than Disqualified Stock) or from the issue or sale of Disqualified Stock or debt securities of the Company that have been converted into Equity Interests (other than Equity Interests (or Disqualified Stock or
convertible debt securities) sold to a Subsidiary of the Company), plus 
 (iii) to the extent that any
Restricted Investment that was made after December 22, 2003 is sold for cash or otherwise liquidated or repaid for cash, the cash return of capital received with respect to the Restricted Investment (less the cost of disposition, if any),
plus 
 (iv) 50% of any dividends received by the Company or a Wholly Owned Restricted Subsidiary after
December 22, 2003 from an Unrestricted Subsidiary of the Company, to the extent that the dividends were not otherwise included in Consolidated Net Income of the Company for the period, plus 

(v) to the extent that any Unrestricted Subsidiary is redesignated as a Restricted Subsidiary, or upon a merger or
consolidation of any Unrestricted Subsidiary into the Company or any of its Restricted Subsidiaries, in each case after December 22, 2003, the lesser of (A) the Fair Market Value of the Company’s Investment in the Subsidiary as of the
date of the redesignation or merger or consolidation and (B) the Fair Market Value as of the date on which the Subsidiary was originally designated as an Unrestricted Subsidiary. 

  
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 The foregoing provisions will not prohibit: 

(i) the payment of any dividend or other distribution within 60 days after the date of declaration, if at said date of
declaration payment would have complied with the provisions of this Indenture; 
 (ii) the making of any
Restricted Payment in exchange for, or out of the net cash proceeds of the sale within 30 days of the making of such Restricted Payment (other than to a Subsidiary of the Company) of, other Equity Interests of the Company (other than any
Disqualified Stock) or the net cash proceeds of a common equity capital contribution to the Company; provided that the amount of any net cash proceeds that are utilized for any Restricted Payment pursuant to this clause (ii) shall be
excluded from clause (c)(ii) of the preceding paragraph; 
 (iii) (A) the defeasance, redemption, repurchase or
other acquisition of subordinated Indebtedness with the net cash proceeds from an incurrence of Permitted Refinancing Indebtedness; and 
 (B) the purchase, redemption or other acquisition for value of any Disqualified Stock with the net cash proceeds from the sale of other Equity Interests of the Company or an incurrence of Permitted
Refinancing Indebtedness; 
 (iv) the payment of any dividend or making of any distribution by a Subsidiary of
the Company to the holders of its Equity Interests on a pro rata basis; 
 (v) so long as no Default or
Event of Default shall have occurred and is continuing or would occur as a result of the making of such Restricted Payment, the repurchase, redemption or other acquisition or retirement for value of any Equity Interests of the Company or any direct
or indirect parent of the Company held by any present, future or former member of the Company’s or any direct or indirect parent of the Company’s (or any of their Subsidiaries’) Board of Directors or any present, future or former
officer, employee or director of the Company, any of its Restricted Subsidiaries or any direct or indirect parent of the Company pursuant to any equity subscription agreement, stockholder agreement, stock option agreement, employment agreement or
other similar agreements or employee benefit plan; provided that 
 (A) the aggregate price paid for all
the repurchased, redeemed, acquired or retired Equity Interests shall not exceed $3.0 million in any calendar year (with unused amounts in any calendar year being carried over to succeeding calendar years subject to a maximum (without giving effect
to clause (B)) of $6.0 million), plus 
 (B) in the case of a repurchase, redemption or other acquisition
or retirement of Equity Interests of the Company or of any direct or indirect parent of the Company, the aggregate cash proceeds received by the Company, or its direct or indirect parent to the extent such cash proceeds are contributed to the common
equity capital of the Company, during that calendar year from any reissuance of Equity Interests by the Company or any direct or indirect parent of the Company to employees, officers and directors of the Company and its Restricted Subsidiaries plus
the cash proceeds of any “key man” life insurance policy received by the Company, and any cash proceeds paid to the Company in connection with the issuance or exercise of, any management or employee Equity Interests so acquired;

 (vi) so long as no Default or Event of Default has occurred and is continuing or would occur as a result of
the making of such Restricted Payment, the declaration and payment of regularly scheduled dividends to holders of any class or series of Disqualified Stock of the Company, or any class or series of Disqualified Stock or preferred stock of any
Restricted Subsidiary that was issued after December 22, 2003 (other than to the Company or another Wholly Owned Restricted Subsidiary of the Company) in compliance with Section 4.09; 

  
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 (vii) repurchase of Equity Interests deemed to occur upon exercise of stock
options and warrants if those Equity Interests represent a portion of the exercise price of the options or warrants; 
 (viii) loans to employees of the Company or any Restricted Subsidiary in the ordinary course of business not to exceed $2.0 million at any one time outstanding; 

(ix) so long as no Default or Event of Default shall have occurred and is continuing or would occur as a result of the
making of such Restricted Payment, Restricted Payments not to exceed $35.0 million since December 22, 2003; 

(x) any payments made by the Company or a Restricted Subsidiary for the purposes described in the Offering Memorandum
under the caption “Use of Proceeds”; 
 (xi) payments, advances, loans or expense reimbursements made
to any direct or indirect parent corporation of the Company to permit the payment by such entity of reasonable general operating expenses, accounting, legal, corporate reporting and administrative expenses incurred in the ordinary course of its
business in an amount not to exceed $1.0 million per annum; 
 (xii) (a) for so long as the Company is a member
of a group filing a consolidated or combined tax return with a parent corporation, payments to the parent in respect of an allocable portion of the tax liabilities of such group that is attributable to the Company and its Subsidiaries
(“Tax Payments”); provided, that the Tax Payments shall not exceed the lesser of (A) the amount of the relevant tax (including any penalties and interest) that the Company would owe if the Company were filing (and
had always filed) a separate tax return (or a separate consolidated or combined return with its Subsidiaries that are members of the consolidated or combined group), taking into account any carryovers and carrybacks of tax attributes (such as net
operating losses) of the Company and such Subsidiaries from other taxable years and (B) the proportionate share of the Company and its Subsidiaries of the net amount of the relevant tax that the parent actually owes to the appropriate taxing
authority or (b) in the event that and for so long as the Company is organized as a limited liability company or partnership, the payment of Permitted Tax Distributions; 

(xiii) the repurchase, redemption or other acquisition or retirement for value of Indebtedness that is subordinated to the
Notes with Excess Proceeds to the extent such Excess Proceeds are permitted to be used for general corporate purposes under Section 4.12; 
 (xiv) the repurchase, redemption or other acquisition for value of Capital Stock of the Company or any direct or indirect parent of the Company representing fractional shares of such Capital Stock in
connection with a merger, consolidation, amalgamation or other combination involving the Company or any direct or indirect parent of the Company; 
 (xv) Investments that are made with Excluded Contributions; 
 (xvi)
so long as no Default or Event of Default shall have occurred and is continuing or would occur as the result of making such Restricted Payment, upon the occurrence of a Change of Control and within 60 days after completion of the offer to repurchase
Notes pursuant to Section 4.17 (including the purchase of all Notes tendered), any purchase or redemption of Indebtedness of the Company subordinated to the Notes that is required to be repurchased or redeemed pursuant to the terms thereof as a
result of such Change of Control, at a purchase price not greater than 101% of the outstanding principal amount (or accreted amount, in the case of any debt issued at a discount from its principal amount at maturity) thereof, plus accrued and unpaid
interest, if any; and 

  
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 (xvii) so long as no Default or Event of Default has occurred and is
continuing or would occur as the result of the making of such Restricted Payment, the declaration and payment of dividends to holders of any class or series of preferred stock of the Company if the Company would have been entitled to incur or assume
Indebtedness under Section 4.09, in an aggregate principal amount equal to the aggregate liquidation value of the preferred stock at the time of issuance of such preferred stock (provided that the cash proceeds from the issuance of such
preferred stock shall be excluded from clause (c)(ii) of the preceding paragraph). 
 The Board of Directors may designate any
Restricted Subsidiary to be an Unrestricted Subsidiary in accordance with Section 4.16. 
 For purposes of determining
compliance with this Section 4.10, in the event that a Restricted Payment meets the criteria of more than one of the exceptions described in (i) through (xvii) above or is entitled to be made pursuant to the first paragraph of this
Section 4.10, the Company shall, in its sole discretion, classify the Restricted Payment in any manner that complies with this Section 4.10. The amount of all Restricted Payments (other than cash) shall be the Fair Market Value on the date
of the Restricted Payment of the asset(s) or securities proposed to be transferred or issued by the Company or the Restricted Subsidiary, as the case may be, pursuant to the Restricted Payment. The Fair Market Value of any non-cash Restricted
Payment or return of capital on any Restricted Subsidiary shall be determined by the Board of Directors whose resolution regarding the Fair Market Value shall be delivered to the Trustee, the determination to be based upon an opinion or appraisal
issued by an accounting, appraisal or investment banking firm of national standing if the Fair Market Value exceeds $20.0 million. Not later than 30 days after the date of making any Restricted Payment, the Company shall deliver to the Trustee an
Officers’ Certificate stating that the Restricted Payment is permitted and setting forth the basis upon which the calculations required by this Section 4.10 were computed, together with a copy of any fairness opinion or appraisal required
by this Indenture. 
 SECTION 4.11. Liens. 
 The Company will not, and will not permit any of its Restricted Subsidiaries to, directly or indirectly, create, incur, assume or suffer to exist any Lien securing Indebtedness or trade payables on any
asset now owned or hereafter acquired, including any income or profits therefrom, except (i) Permitted Liens, and (ii) in the case of Liens securing Indebtedness that is expressly subordinate or junior in right of payment to the Notes or a
Guarantee, the Notes or such Guarantee, as the case may be, are secured by a Lien on property, assets or proceeds that is senior in priority to such Liens (with the same relative priority as the subordinate or junior Indebtedness shall have with
respect to the Notes and the Guarantees) and (iii) in the case of Liens securing Indebtedness that is pari passu with the Notes or a Guarantee, the Notes or such Guarantee, as the case maybe, are secured by the Lien on an equal and
ratable basis. 
 SECTION 4.12. Asset Sales. 
 The Company will not, and will not permit any of its Restricted Subsidiaries to, consummate an Asset Sale unless: 
 (i) the Company (or the Restricted Subsidiary, as the case may be) receives consideration at the time of the Asset Sale at least equal to the Fair Market Value of the assets or Equity Interests issued or
sold or otherwise disposed of; and 
 (ii) at least 75% of the consideration therefor received by the Company or
the Restricted Subsidiary is in the form of Qualified Proceeds. 
 For the purposes of clause (ii) above and no other
provision, each of the following shall be deemed cash: 
 (a) any liabilities (as shown on the Company’s or
the Restricted Subsidiary’s most recent balance sheet), of the Company or any Restricted Subsidiary (other than contingent liabilities and liabilities that are by their terms subordinated to the Notes or any Guarantee of the Notes) that are
assumed by the transferee of any assets pursuant to a customary novation agreement or by operation of law that releases the Company or the Restricted Subsidiary from further liability therefor; 

  
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 (b) any securities, notes or other obligations received by the Company or
the Restricted Subsidiary from a transferee that are converted by the Company or the Restricted Subsidiary into cash (to the extent of the cash received) within 180 days following the closing of the Asset Sale; and 

(c) any Designated Non-cash Consideration received by the Company or any of its Restricted Subsidiaries in such Asset Sale
having an aggregate Fair Market Value, taken together with all other Designated Non-cash Consideration received pursuant to this clause (c) then outstanding, not to exceed the greater of (x) $50.0 million and (y) 8% of Total Tangible
Assets at the time of receipt of such Designated Non-cash Consideration with the Fair Market Value of each item of Designated Non-cash Consideration being measured at the time received and without giving effect to subsequent changes in value.

 Within 360 days after the receipt of any Net Proceeds from an Asset Sale, the Company or any Restricted Subsidiary may apply
the Net Proceeds, at its option, 
 (a) to repay or otherwise retire amounts owing under the Credit Agreement in
accordance with the Credit Agreement and to correspondingly reduce commitments with respect thereto, 
 (b) to
repay or otherwise retire amounts owing under other Secured Indebtedness (other than subordinated obligations), which Secured Indebtedness is permitted by the Indenture, and to correspondingly reduce commitments with respect thereto, and/or

 (c) to the acquisition of a majority of the assets of, or a majority of the Voting Stock of, another Permitted
Business, to making a capital expenditure for the construction, repair, improvement or acquisition of assets that are used or useful in a Permitted Business (or commitment to do any of the foregoing, provided that this commitment or its
reasonable replacement is consummated substantially in accordance with its terms), or 
 (d) for a combination of
uses described in clauses (a), (b) or (c). 
 Pending the final application of any Net Proceeds, the Company and its
Restricted Subsidiaries may temporarily reduce revolving credit borrowings or otherwise invest the Net Proceeds in any manner that is not prohibited by this Indenture. Any Net Proceeds from Asset Sales that are not applied or invested as provided in
the immediately preceding paragraph will be deemed to constitute “Excess Proceeds.” When the aggregate amount of Excess Proceeds exceeds $20.0 million, the Company will be required to make an offer to all Holders of
Notes (an “Asset Sale Offer”) to purchase the maximum principal amount of Notes and, if the Company is required to do so under the terms of any other Indebtedness that is pari passu with the Notes, such other
Indebtedness on a pro rata basis with the Notes, that may be purchased out of the Excess Proceeds, at an offer price in cash in an amount equal to 100% of the principal amount of the Notes plus accrued and unpaid interest and Additional
Interest thereon, if any, to the date of repurchase, in accordance with the procedures set forth in this Indenture. To the extent that any Excess Proceeds remain after consummation of an Asset Sale Offer, the Company may use the Excess Proceeds for
any general corporate purpose. If the aggregate principal amount of Notes and other pari passu Indebtedness tendered into such Asset Sale Offer exceeds the amount of Excess Proceeds, subject to Applicable Procedures, the Trustee will select
the Notes and such other pari passu Indebtedness to be purchased on a pro rata basis. Upon completion of each Asset Sale Offer, the amount of Excess Proceeds shall be reset at zero. 

SECTION 4.13. Dividend and Other Payment Restrictions Affecting Subsidiaries. 

The Company will not, and will not permit any of its Restricted Subsidiaries to, directly or indirectly, create or otherwise cause or
suffer to exist or become effective any encumbrance or restriction on the ability of any Restricted Subsidiary to: 
 (i) (a) pay dividends or make any other distributions to the Company or any of its Restricted Subsidiaries (1) on its Capital Stock or (2) with respect to any other interest or participation in,
or measured by, its profits, or (b) pay any Indebtedness or other liabilities owed to the Company or any of its Restricted Subsidiaries, 

  
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 (ii) make loans or advances to the Company or any of its Restricted
Subsidiaries, or 
 (iii) transfer any of its properties or assets to the Company or any of its Restricted
Subsidiaries. 
 However, the foregoing restrictions will not apply to encumbrances or restrictions existing under or by reason
of: 
 (a) Existing Indebtedness as in effect on the Issue Date, 

(b) the Credit Agreement and Permitted Bonding Obligations as in effect as of the Issue Date, and any amendments,
modifications, restatements, renewals, increases, supplements, refundings, replacements or refinancings, provided that any amendments, modifications, restatements, renewals, increases, supplements, refundings, replacement or refinancings are
not materially more restrictive, taken as a whole, with respect to dividend and other payment restrictions than those contained in the Credit Agreement or in agreements with respect to Permitted Bonding Obligations, as applicable, as in effect on
the Issue Date, 
 (c) this Indenture, the Notes (including the Exchange Notes) and the Guarantees (including the
Guarantees of the Exchange Notes), 
 (d) applicable law, rule, regulation or order, 

(e) any instrument governing Indebtedness or Capital Stock of a Person acquired by the Company or any of its Restricted
Subsidiaries as in effect at the time of acquisition (except to the extent the Indebtedness was incurred in connection with or in contemplation of the acquisition), which encumbrance or restriction is not applicable to any Person, or the properties
or assets of any Person, other than the Person, or the property or assets of the Person, so acquired, provided that, in the case of Indebtedness, the Indebtedness was permitted by the terms of this Indenture to be incurred, 

(f) customary non-assignment provisions in leases, licenses, charters or other similar agreements entered into in the
ordinary course of business; 
 (g) purchase money obligations for property acquired in the ordinary course of
business that impose restrictions of the nature described in clause (iii) of the first paragraph of this Section 4.13 on the property so acquired, 
 (h) any agreement for the sale of a Restricted Subsidiary that restricts distributions by that Restricted Subsidiary pending its sale, 

(i) Permitted Refinancing Indebtedness, provided that the restrictions contained in the agreements governing
Permitted Refinancing Indebtedness are not materially more restrictive, taken as a whole, than those contained in the agreements governing the Indebtedness being refinanced, 

(j) secured Indebtedness otherwise permitted to be incurred pursuant to the provisions of Section 4.09 and
Section 4.11 that limits the right of the debtor to dispose of the assets (including any insurance, leases and charters relating to such assets, and any proceeds thereof) securing the Indebtedness, 

(k) provisions with respect to the disposition or distribution of assets or property in joint venture agreements and other
similar agreements entered into in the ordinary course of business, 
 (l) restrictions on cash or other deposits
or net worth imposed by customers under contracts entered into in the ordinary course of business, 
 (m)
mortgage, construction, purchase money or similar financings that impose restrictions on the transfer of the property acquired, constructed repaired or improved, 

  
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 (n) encumbrances or restrictions imposed by amendments to the contracts,
agreements or obligations referred to in the foregoing clauses (a), (c), (e), (f), (g), (h), (j), (k), (l) and (m), provided that the amendments are not materially more restrictive than the agreement so amended, 

(o) any other agreement, instrument or document relating to Indebtedness hereafter in effect, provided, that the
terms and conditions of such encumbrances or restrictions are not materially more restrictive taken as a whole than those encumbrances or restrictions imposed in connection with the Credit Agreement as in effect on the Issue Date (which may result
in encumbrances or restrictions upon a Restricted Subsidiary so long as such encumbrances or restrictions are not materially more restrictive taken as a whole than the comparable restriction that is applicable to the Company), or 

(p) encumbrances or restrictions contained in any Indebtedness incurred by a Foreign Subsidiary that apply only to such
Foreign Subsidiary. 
 SECTION 4.14. Transactions With Affiliates. 

The Company will not, and will not permit any of its Restricted Subsidiaries to, make any payment to, or sell, lease, transfer or
otherwise dispose of any of its properties or assets to, or purchase any property or assets from, or enter into or make or amend any transaction, contract, agreement, understanding, loan, advance or guarantee with, or for the benefit of, any
Affiliate (each of the foregoing, an “Affiliate Transaction”), unless 
 (i) the
Affiliate Transaction is on terms that are no less favorable to the Company or the relevant Restricted Subsidiary than those that would have been obtained in a comparable transaction by the Company or Restricted Subsidiary with an unrelated Person
and 
 (ii) the Company delivers to the Trustee: 

(a) with respect to any Affiliate Transaction or series of related Affiliate Transactions involving aggregate
consideration in excess of $2.0 million, a resolution of the Board of Directors of the Company set forth in an Officers’ Certificate certifying that the Affiliate Transaction complies with clause (i) above and that the Affiliate
Transaction has been approved by a majority of the members of the Board of Directors of the Company (and, if there are disinterested directors, a majority thereof) and 

(b) with respect to any Affiliate Transaction or series of related Affiliate Transactions involving aggregate
consideration in excess of $10.0 million, an opinion as to the fairness to the Company or such Restricted Subsidiary of the Affiliate Transaction from a financial point of view issued by an accounting, appraisal or investment banking firm of
national standing. 
 Notwithstanding the foregoing, the following items shall not be deemed to be Affiliate Transactions:

 (i) any employment agreement, compensation, employee benefit arrangements and incentive arrangements or
indemnification agreement or arrangement with any officer, director, member or employee entered into by the Company or any of its Restricted Subsidiaries in the ordinary course of business of the Company or the Restricted Subsidiary; 

(ii) transactions between or among the Company and/or its Restricted Subsidiaries; 

(iii) payment of reasonable directors fees and customary indemnification agreements with directors and officers of the
Company and its Restricted Subsidiaries or any direct or indirect parent of the Company; 
 (iv) Restricted
Payments that are permitted by Section 4.10; 

  
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 (v) loans and advances to officers, directors and employees of the Company
or any Restricted Subsidiary for travel, entertainment, moving and other relocation expenses, in each case made in the ordinary course of business; 
 (vi) transactions with a Person (other than an Unrestricted Subsidiary of the Company) that is an Affiliate of the Company solely because the Company owns, directly or through a Restricted Subsidiary, an
Equity Interest in, or controls, such Person; 
 (vii) the issuance of Equity Interests (other than Disqualified
Stock) of the Company to any direct or indirect parent of the Company; 
 (viii) transactions with customers,
clients, suppliers or purchasers or sellers of goods or services, in each case in the ordinary course of business and otherwise in compliance with the terms of this Indenture that are on terms no less favorable than those that would have been
obtained in a comparable transaction with an unrelated party or on terms that are approved by the Board of Directors of the Company, including a majority of the disinterested directors, if any; 

(ix) transactions pursuant to any contract or agreement described under the caption “Certain Relationships and
Related Person Transactions—Agreements with Related Persons” in the Company’s Proxy Statement on Form DEF 14A as filed with the Commission on April 6, 2010, as in effect on the Issue Date, in each case as amended, modified or
replaced from time to time so long as the amended, modified or new agreements, taken as a whole, are no less favorable to the Company and its Restricted Subsidiaries than those in effect on the Issue Date; and 

(x) any payments or other transactions pursuant to any tax-sharing agreement between the Company and any other Person with
which the Company files a consolidated tax return or with which the Company is part of a consolidated group for tax purposes. 
 SECTION 4.15.
Additional Guarantees. 
 The Company will cause any Restricted Subsidiary (other than an Excluded Subsidiary),
whether currently existing, or subsequently acquired or created, that guarantees the Company’s Obligations or the Obligations of any other Restricted Subsidiary under the Credit Agreement to fully and unconditionally guarantee all of the
Company’s or such Restricted Subsidiary’s Obligations under the Notes and this Indenture on the terms set forth in this Indenture. Thereafter, such Restricted Subsidiary shall be a Guarantor for all purposes of this Indenture until
released in accordance with the terms of this Indenture. Any such Guarantee shall provide by its terms that it shall be automatically and unconditionally released and discharged as described in Article 10. 

SECTION 4.16. Designation of Restricted and Unrestricted Subsidiaries. 

The Company’s Board of Directors may designate any of its Subsidiaries, including any newly formed Subsidiary or any Person that will
become a Subsidiary by way of acquisition, to be an Unrestricted Subsidiary if that designation would not cause a Default. For purposes of making this determination, all outstanding Investments by the Company and its Restricted Subsidiaries (except
to the extent repaid in cash) in the Subsidiary so designated will be deemed to be Restricted Payments at the time of the designation and shall either reduce the amount available for Restricted Payments under the first paragraph of
Section 4.10(c) or reduce the amount available for future Investments under one or more clauses of the definition of “Permitted Investments,” as the Company determines in its sole discretion. All outstanding Investments will be deemed
to constitute Investments in an amount equal to the Fair Market Value of the Investments at the time of the designation. Such designation will only be permitted if a Restricted Payment in that amount would be permitted at that time and if the
Restricted Subsidiary otherwise meets the definition of an “Unrestricted Subsidiary.” 
 Any designation by the Board
of Directors of an Unrestricted Subsidiary shall be evidenced to the Trustee by filing with the Trustee a certified copy of the Board Resolution giving effect to the designation and an Officers’ Certificate certifying that the designation
complied with the foregoing conditions and was permitted by Section 4.10. 

  
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If, at any time, any Unrestricted Subsidiary would fail to meet the foregoing requirements as an Unrestricted Subsidiary, it shall thereafter cease to be an Unrestricted Subsidiary for purposes
of this Indenture, and any Indebtedness of such Subsidiary shall be deemed to be incurred by a Restricted Subsidiary of the Company as of such date (and, if such Indebtedness is not permitted to be incurred under Section 4.09, the Company shall
be in default of Section 4.09). The Board of Directors of the Company may at any time designate any Unrestricted Subsidiary to be a Restricted Subsidiary; provided that such designation shall be deemed to be an incurrence of Indebtedness
by a Restricted Subsidiary of the Company of any outstanding Indebtedness of such Unrestricted Subsidiary and the designation shall only be permitted if (i) such Indebtedness is permitted under Section 4.09, calculated on a pro
forma basis as if the designation had occurred at the beginning of the four-quarter reference period, and (ii) no Default or Event of Default would be in existence following the designation. 

SECTION 4.17. Repurchase at the Option of Holders Upon a Change of Control. 

(a) Upon the occurrence of a Change of Control, the Company shall, within 30 days following a Change of Control, make an offer (the
“Change of Control Offer”) pursuant to the procedures set forth in Section 3.09. Each Holder shall have the right to accept such offer and require the Company to repurchase all or any portion (equal to $2,000 or an
integral multiple of $1,000 in excess thereof) of such Holder’s Notes pursuant to the Change of Control Offer at a purchase price, in cash (the “Change of Control Payment”), equal to 101% of the aggregate principal
amount of Notes repurchased, plus accrued and unpaid interest and Additional Interest, if any, on the Notes repurchased, to the Purchase Date (subject to the right of Holders of record on the relevant Regular Record Date to receive interest due on
the relevant Interest Payment Date). 
 (b) The Company will not be required to make a Change of Control Offer upon a Change of
Control if (1) a third party makes the Change of Control Offer in the manner, at the times and otherwise in compliance with the requirements set forth in this Indenture applicable to a Change of Control Offer made by the Company and purchases
all Notes validly tendered and not withdrawn under the Change of Control Offer or (2) notice of redemption has been given pursuant to this Indenture as described in Section 3.03, unless and until there has been a default in payment of the
applicable redemption price. A Change of Control Offer may be made in advance of a Change of Control or conditional upon a Change of Control, if a definitive agreement is in place for the Change of Control at the time of making of the Change of
Control Offer. 
 SECTION 4.18. Business Activities. 
 The Company will not, and will not permit any Restricted Subsidiary to, engage in any business other than Permitted Businesses, except to the extent as would not be material to the Company and its
Restricted Subsidiaries taken as a whole. 
 ARTICLE 5.  

SUCCESSORS 

SECTION 5.01. Merger, Consolidation and Sale of Assets. 
 The Company may not consolidate or merge with or into (whether or not the Company is the surviving corporation), or sell, assign, transfer, convey or otherwise dispose of all or substantially all of its
properties or assets in one or more related transactions, to another Person unless: 
 (i) the Company is the
surviving corporation or the entity or the Person formed by or surviving the consolidation or merger (if other than the Company) or to which the sale, assignment, transfer, lease, conveyance or other disposition shall have been made is a
corporation, limited liability company or partnership organized or existing under the laws of the United States, any individual state or the District of Columbia; provided, however, that if such Person is a limited liability company or
partnership, a corporate Wholly Owned Restricted Subsidiary of such Person becomes a co-issuer of the Notes in connection therewith; 

  
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 (ii) the entity or Person formed by or surviving any consolidation or merger
(if other than the Company) or the entity or Person to which the sale, assignment, transfer, lease, conveyance or other disposition shall have been made assumes all the then existing obligations of the Company under the Registration Rights
Agreement, the Notes and this Indenture pursuant to a supplemental indenture in a form reasonably satisfactory to the Trustee; 
 (iii) immediately after the transaction no Default or Event of Default exists; and 
 (iv) except in the case of a merger or consolidation of the Company with or into a Wholly Owned Restricted Subsidiary of the Company, the Company or the Person formed by or surviving the consolidation or
merger (if other than the Company), or to which the sale, assignment, transfer, lease, conveyance or other disposition shall have been made will, at the time of the transaction and after giving pro forma effect to it as if the transaction had
occurred at the beginning of the applicable four-quarter period, (a) be permitted to incur at least $1.00 of additional Indebtedness pursuant to the Fixed Charge Coverage Ratio test set forth in the first paragraph of Section 4.09 or
(b) have a Fixed Charge Coverage Ratio that is greater than the Fixed Charge Coverage Ratio of the Company without giving effect to the transaction. 
 The Company will not, directly or indirectly, lease all or substantially all of its properties or assets to any Person. This Section 5.01 will not apply to any sale, assignment, transfer, conveyance
or other disposition of assets (including by way of merger or consolidation) between or among the Company and any of its Wholly Owned Restricted Subsidiaries that are Guarantors. 

Upon any consolidation or merger, or any sale, assignment, transfer, conveyance or other disposition by the Company (other than by lease)
of all or substantially all of the properties and assets of the Company, in accordance with this Section 5.01, the successor Person formed by such consolidation or into which the Company is merged or to which such transfer is made shall succeed
to, and be substituted for, and may exercise every right and power of, the Company under this Indenture and the Notes. In the event of any such transfer (other than a transfer of less than all of the properties and assets of the Company), the
Company shall be released and discharged from all liabilities and obligations in respect of the Notes and this Indenture, and the Company may be dissolved, wound up or liquidated at any time thereafter. 

SECTION 5.02. Successor Corporation Substituted. 
 The surviving Person shall succeed to, and be substituted for, and may exercise every right and power of the Company or a Guarantor, as applicable, under this Indenture; provided, however,
that the predecessor entity shall not be released from any of the obligations or covenants under this Indenture, including with respect to the payment of the Notes and obligations under the Guarantee, as the case may be, in the case of: 

(a) a sale, transfer, assignment, conveyance or other disposition (unless such sale, transfer, assignment, conveyance or other
disposition is of all or substantially all of the assets of the Company and its Restricted Subsidiaries, taken as a whole or, in the case of a Guarantor, such sale, transfer, assignment, conveyance or other disposition is of all or substantially all
of the assets of such Guarantor, in either case, to a Person that is not (either before or after giving effect to such transaction) a Subsidiary of the Company, or 
 (b) a lease. 

  
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 ARTICLE 6.  

DEFAULTS AND REMEDIES 
 SECTION 6.01. Events of Default. 
 Each of the following constitutes
an “Event of Default” with respect to the Notes: 
 (i) default for 30 days in the
payment when due of interest on, or Additional Interest with respect to, the Notes; 
 (ii) default in payment
when due of the principal of or premium, if any, on the Notes; 
 (iii) failure by the Company or any of its
Restricted Subsidiaries to comply with Section 4.17; 
 (iv) failure by the Company or any of its Restricted
Subsidiaries for 60 days after notice by the Trustee or by the Holders of at least 25% in principal amount of Notes then outstanding to comply with any of its other agreements in this Indenture or the Notes; 

(v) default under any mortgage, indenture or instrument under which there may be issued or by which there may be secured
or evidenced any Indebtedness for money borrowed by the Company or any of its Restricted Subsidiaries (or the payment of which is guaranteed by the Company or any of its Restricted Subsidiaries) whether the Indebtedness or guarantee now exists, or
is created after the Issue Date, which default: 
 (A) is caused by a failure to pay principal on such
Indebtedness at final stated maturity prior to the expiration of the grace period provided in the Indebtedness on the date of the default (a “Payment Default”) or 

(B) results in the acceleration of the Indebtedness prior to its stated maturity 

and, in each case, the principal amount of any Indebtedness, together with the principal amount of any other such Indebtedness under which
there has been a Payment Default or the maturity of which has been so accelerated (after giving effect to any applicable grace period), aggregates $20.0 million or more; 

(vi) failure by the Company or any of its Restricted Subsidiaries to pay final judgments aggregating in excess of $20.0
million (net of any amount with respect to which a reputable insurance company with assets over $100.0 million has acknowledged liability in writing), which judgments are not paid, discharged or stayed for a period of 60 days after their entry;

 (vii) the Company or any of its Significant Subsidiaries pursuant to or within the meaning of any Bankruptcy
Law: 
 (A) commences a voluntary case or gives notice of intention to make a proposal under any Bankruptcy Law;

 (B) consents to the entry of an order for relief against it in an involuntary case or consents to its
dissolution or winding up; 
 (C) consents to the appointment of a receiver, interim receiver, receiver and
manager, liquidator, trustee or custodian of it or for all or substantially all of its property; 
 (D) makes a
general assignment for the benefit of its creditors; or 
 (E) admits in writing its inability to pay its debts
as they become due or otherwise admits its insolvency; 
 (viii) a court of competent jurisdiction enters an
order or decree under any Bankruptcy Law that: 
 (A) is for relief against the Company or any of its Significant
Subsidiaries in an involuntary case; or 

  
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 (B) appoints a receiver, interim receiver, receiver and manager, liquidator,
trustee or custodian of the Company or any of its Significant Subsidiaries or for all or substantially all of the property of the Company or any of its Significant Subsidiaries; or 

(C) orders the liquidation of the Company or any of its Significant Subsidiaries; 

and such order or decree remains unstayed and in effect for 60 consecutive days; and 

(ix) except as permitted by this Indenture, any Guarantee of any Significant Subsidiary (or group of Guarantors that,
collectively, would be a Significant Subsidiary) shall be held in any judicial proceeding to be unenforceable or invalid or shall cease for any reason to be in full force and effect or any Guarantor that is a Significant Subsidiary (or group of
Guarantors that, collectively, would be a Significant Subsidiary), or any Person acting on behalf of any Guarantor that is a Significant Subsidiary (or group of Guarantors that, collectively, would be a Significant Subsidiary), shall deny or
disaffirm its obligations under its Guarantee. 
 SECTION 6.02. Acceleration. 

If any Event of Default (other than those of the type described in Section 6.01(vii) or (viii)) occurs and is continuing, the Trustee
or the Holders of at least 25% in principal amount of outstanding Notes may, declare the principal of all the Notes, together with all accrued and unpaid interest, premium, if any, to be due and payable by notice in writing to the Company and the
Trustee specifying the respective Event of Default and that such notice is a notice of acceleration (the “Acceleration Notice”), and the same shall become immediately due and payable. 

In the case of an Event of Default specified in Section (vii) or (viii) of Section 6.01 hereof, all outstanding Notes
shall become due and payable immediately without any further declaration or other act on the part of the Trustee or the Holders. Holders may not enforce this Indenture or the Notes except as provided in this Indenture. 

In the event of a declaration of acceleration of the Notes because an Event of Default has occurred and is continuing as a result of the
acceleration of any Indebtedness described in Section 6.01(v) (excluding any resulting payment default under this Indenture or the Notes), the declaration of acceleration of the Notes shall be automatically annulled if the holders of all
Indebtedness described in such Section 6.01(v) have rescinded the declaration of acceleration in respect of such Indebtedness within 20 days of the date of such declaration, and if the annulment of the acceleration of the Notes would not
conflict with any judgment or decree of a court of competent jurisdiction, and all existing Events of Default, except non-payment of principal or interest on the Notes that became due solely because of the acceleration of the Notes, have been cured
or waived. 
 The Holders of a majority in principal amount of the outstanding Notes by written notice to the Company and to the
Trustee may waive all past Defaults and rescind and annul a declaration of acceleration and its consequences if: 

(1) all existing Events of Default, other than the nonpayment of the principal of, premium, or Additional Interest if any,
and interest on, the Notes that have become due solely by the declaration of acceleration, have been cured or waived, 
 (2) the rescission would not conflict with any judgment or decree of a court of competent jurisdiction, and 
 (3) all amounts to the Trustee under Section 7.07 have been paid. 
 SECTION 6.03. Other
Remedies. 
 If an Event of Default occurs and is continuing, the Trustee may pursue any available remedy to collect the
payment of principal, premium, if any, and interest on the Notes or to enforce the performance of any provision of the Notes or this Indenture. 

  
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 The Trustee may maintain a proceeding even if it does not possess any of the Notes or does
not produce any of them in the proceeding. A delay or omission by the Trustee or any Holder in exercising any right or remedy accruing upon an Event of Default shall not impair the right or remedy or constitute a waiver of or acquiescence in the
Event of Default. All remedies shall be cumulative to the extent permitted by law. 
 SECTION 6.04. Waiver of Defaults.

 The Holders of at least a majority in aggregate principal amount of the Notes then outstanding by notice to the Trustee may on
behalf of the Holders of all of the Notes, waive any existing Default or Event of Default, and its consequences, except a continuing Default or Event of Default (i) in the payment of the principal of, premium, Additional Interest, if any, or
interest on the Notes and (ii) in respect of a covenant or provision which under this Indenture cannot be modified or amended without the consent of the Holder of each Note affected by such modification or amendment. Upon any waiver of a
Default or Event of Default, such Default shall cease to exist, and any Event of Default arising therefrom shall be deemed cured for every purpose of this Indenture but no such waiver shall extend to any subsequent or other Default or Event of
Default or impair any right consequent thereon. 
 SECTION 6.05. Control by Majority. 

Subject to Section 7.01, Section 7.02(f) (including the Trustee’s receipt of the security or indemnification described
therein) and Section 7.07 hereof, in case an Event of Default shall occur and be continuing, the Holders of a majority in aggregate principal amount of the Notes then outstanding 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. However, the Trustee may refuse to follow any direction that conflicts with law or this Indenture,
that the Trustee determines may be unduly prejudicial to the rights of other Holders or that may involve the Trustee in personal liability, and the Trustee may take any other action deemed proper by the Trustee which not inconsistent with such
direction. 
 SECTION 6.06. Limitation on Suits. 
 A Holder may not institute any proceeding, judicial or otherwise, with respect to this Indenture or the Notes, or for the appointment of a receiver or trustee, or for any other remedy under this Indenture
or the Notes, unless: 
 (1) the Holder has previously given to the Trustee written notice of a continuing Event
of Default; 
 (2) Holders of at least 25% in aggregate principal amount of outstanding Notes have made written
request to the Trustee to institute proceedings in respect of the Event of Default in its own name as Trustee under this Indenture; 
 (3) Holders have offered to the Trustee indemnity reasonably satisfactory to the Trustee against any costs, liabilities or expenses to be incurred in compliance with such request; 

(4) the Trustee for 60 days after its receipt of such notice, request and offer of indemnity has failed to institute any
such proceeding; and 
 (5) during such 60-day period, the Holders of a majority in aggregate principal amount of
the outstanding Notes have not given the Trustee a direction that is inconsistent with such written request. 
 The preceding
limitations shall not apply to a suit instituted by a Holder for enforcement of payment of principal of, and premium, if any, or interest on, a Note on or after the Stated Maturity. 

A Holder may not use this Indenture to affect, disturb or prejudice the rights of another Holder or to obtain a preference or priority
over another Holder. 

  
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 SECTION 6.07. Rights of Holders to Receive Payment. 

Notwithstanding any other provision of this Indenture (including Section 6.06), the right of any Holder to receive payment of
principal, premium, if any, and interest on the Notes held by such Holder, on or after the Stated Maturity, or to bring suit for the enforcement of any such payment on or after such date, shall not be impaired or affected without the consent of such
Holder. 
 SECTION 6.08. Collection Suit by Trustee. 
 If an Event of Default specified in Section 6.01 (i) or (ii) occurs and is continuing, the Trustee is authorized to recover judgment in its own name and as trustee of an express trust
against the Company (or any obligor upon the Notes) for the whole amount of principal of, premium, if any, and interest then due and owing (together with interest on overdue principal and, to the extent lawful, interest) and such further amount as
shall be sufficient to cover the costs and expenses of collection, including the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel. 
 SECTION 6.09. Trustee May File Proofs of Claim. 
 The Trustee shall
be authorized to file such proofs of claim and other papers or documents as may be necessary or advisable in order to have the claims of the Trustee (including any claim for the reasonable compensation, expenses, disbursements and advances of the
Trustee, its agents and counsel) and the Holders allowed in any judicial proceedings relative to the Company (or any other obligor upon the Notes), its creditors or its property and shall be entitled and empowered to collect, receive and distribute
any money or other property payable or deliverable on any such claims and any custodian in any such judicial proceeding is hereby authorized by each Holder to make such payments to the Trustee, 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 to it for the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel, and any other amounts due the Trustee under
Section 7.07 hereof. To the extent that the payment of any such compensation, expenses, disbursements and advances of the Trustee and its agents and counsel, and any other amounts due the Trustee under Section 7.07 hereof out of the estate
in any such proceeding, shall be denied for any reason, payment of the same shall be secured by a Lien prior to the Notes on all money or property held or collected by the Trustee, except that held in trust to pay principal, premium, if any, and
interest on particular Notes, and shall be paid out of, any and all distributions, moneys, securities and any other properties that the Holders may be entitled to receive in such proceeding 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 the
Notes or the rights of any Holder, or to authorize the Trustee to vote in respect of the claim of any Holder in any such proceeding. The Trustee may, on behalf of the Holders, vote for the election of a trustee in bankruptcy or similar official and
be a member of a creditors’ or other similar committee. 
 SECTION 6.10. Priorities. 

After an Event of Default has occurred which is continuing, any moneys or properties distributable in respect of the Company’s or any
Guarantor’s obligations under this Indenture, or any money or property collected by the Trustee pursuant to this Article 6, shall be paid out or distributed in the following order: 

First: to the Trustee, its agents and attorneys for amounts due under Section 7.07 hereof, including payment
of all compensation, expenses and liabilities incurred, and all advances made, by the Trustee and the costs and expenses of collection; 
 Second: to Holders for amounts due and unpaid on the Notes for principal, premium, if any, and interest ratably, without preference or priority of any kind, according to the amounts due and payable
on the Notes for principal, premium, if any, and interest, respectively; and 
 Third: to the Company or
to such party as a court of competent jurisdiction shall direct. 

  
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 The Trustee may fix a record date and payment date for any payment to Holders pursuant to
this Section 6.10. 
 SECTION 6.11. Undertaking for Costs. 

In any suit for the enforcement of any right or remedy under this Indenture or in any suit against the Trustee for any action taken or
omitted by it as Trustee, a court in its discretion may require the filing by any party litigant in such suit of an undertaking to pay the costs of such suit, and the court in its discretion may assess reasonable costs, including reasonable
attorneys’ fees and expenses, against any party litigant in such suit, having due regard to the merits and good faith of the claims or defenses made by the party litigant. This Section 6.11 shall not apply to a suit by the Trustee, a suit
by the Company, a suit by a Holder pursuant to Section 6.07 hereof, or a suit by Holders of more than 10% in principal amount of the then outstanding Notes. 
 ARTICLE 7.  
 TRUSTEE 

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

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

(1) the duties of the Trustee shall be determined solely by the express provisions of this Indenture and the Trustee need
perform only those duties that are specifically set forth in this Indenture and no others, and no implied covenants or obligations shall be read into this Indenture against the Trustee; and 

(2) in the absence of bad faith on its part, the Trustee may conclusively rely, as to the truth of the statements and the
correctness of the opinions expressed therein, upon certificates or opinions furnished to the Trustee and conforming to the requirements of this Indenture. However, in the case of certificates or opinions specifically required by any provision
hereof to be furnished to it, the Trustee shall examine the certificates and opinions to determine whether or not they conform to the requirements of this Indenture (but need not confirm or investigate the accuracy of mathematical calculations or
other facts stated therein). 
 (c) The Trustee may not be relieved from liabilities for its own negligent action, its own
negligent failure to act, or its own willful misconduct, except that: 
 (1) this paragraph does not limit the
effect of paragraph (b) of this Section 7.01; 
 (2) the Trustee shall not be liable for any error of
judgment made in good faith by a Responsible Officer, unless it is proved that the Trustee was negligent in ascertaining the pertinent facts; and 
 (3) the Trustee shall not be liable with respect to any action it takes or omits to take in good faith in accordance with a direction received by it pursuant to Section 6.05 hereof. 

(d) Whether or not therein expressly so provided, every provision of this Indenture that in any way relates to the Trustee is subject to
paragraphs (a), (b) and (c) of this Section 7.01. 
 (e) No provision of this Indenture shall require the Trustee
to expend or risk its own funds or incur any liability. The Trustee shall be under no obligation to exercise any of its rights and powers under this Indenture at the request or direction of any Holder, unless such Holder shall have offered to the
Trustee security and indemnity satisfactory to it against any loss, liability or expense. 

  
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 (f) The Trustee shall not be liable for interest on any money received by it except as the
Trustee may agree in writing with the Company. Money held in trust by the Trustee need not be segregated from other funds except to the extent required by law. 
 SECTION 7.02. Rights of Trustee. 
 Subject to TIA Section 315:

 (a) The Trustee may conclusively rely upon any document believed by it to be genuine and to have been signed
or presented by the proper Person. The Trustee need not investigate any fact or matter stated in any such document. Whenever in the administration of this Indenture the Trustee shall deem it desirable that a matter be proved or established prior to
taking, suffering or omitting any action hereunder, the Trustee (unless other evidence be herein specifically prescribed) may, in the absence of gross negligence, willful misconduct or bad faith on its part, conclusively rely upon an Officers’
Certificate. 
 (b) Before the Trustee acts or refrains from acting, it may require an Officers’ Certificate
or an Opinion of Counsel or both. The Trustee shall not be liable for any action it takes or omits to take in good faith in reliance on such Officers’ Certificate or Opinion of Counsel. The Trustee may consult with counsel and the advice of
such counsel or any Opinion of Counsel shall be full and complete authorization and protection from liability in respect of any action taken, suffered or omitted by it hereunder in good faith and in reliance thereon. 

(c) The Trustee may act through its attorneys and agents and shall not be responsible for the misconduct or negligence of
any agent appointed with due care. 
 (d) The Trustee shall not be liable for any action it takes or omits to
take in good faith that it believes to be authorized or within the rights or powers conferred upon it by this Indenture, provided that the Trustee’s conduct does not constitute willful misconduct or negligence. 

(e) Unless otherwise specifically provided in this Indenture, any demand, request, direction or notice from the Company
shall be sufficient if signed by an Officer of the Company. 
 (f) The Trustee shall be under no obligation to
exercise any of the rights or powers vested in it by this Indenture at the request or direction of any of the Holders unless such Holders shall have offered to the Trustee security or indemnity reasonably satisfactory to it against the costs,
expenses and liabilities that might be incurred by it in compliance with such request or direction. 
 (g) 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, note, other evidence of
indebtedness or other paper or document, but the Trustee, in its reasonable discretion, may make such further inquiry or investigation into such facts or matters as it may see fit, and, if the Trustee shall reasonably determine to make such further
inquiry or investigation, it shall be entitled to examine the books, records and premises of the Company during normal business hours and upon reasonable notice, personally or by agent or attorney at the sole cost of the Company and shall incur no
liability or additional liability of any kind by reason of such inquiry or investigation. 
 (h) The Trustee may
execute any of the trusts or powers hereunder or perform any duties hereunder either directly or by or through agents or attorneys, and the Trustee shall not be responsible for any willful misconduct or gross negligence on the part of any agent or
attorney appointed with due care by it under this Indenture. 
 (i) The Trustee shall not be deemed to have
notice of any Default or Event of Default unless a Responsible Officer of the Trustee has actual knowledge thereof or unless written notice of any event which is in fact such a Default or Event of Default is received by a Responsible Officer of the
Trustee at the Corporate Trust Office of the Trustee from the Company or the Holders of 25% in aggregate principal amount of the outstanding Notes, and such notice references the specific Default or Event of Default, the Notes and this Indenture.

  
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 (j) The Trustee shall not be required to give any bond or surety in respect
of the performance of its power and duties hereunder. 
 (k) The rights, privileges, protections, immunities and
benefits given to the Trustee, including, without limitation, its right to be indemnified, are extended to, and shall be enforceable by, the Trustee in each of its capacities hereunder, and to each agent, Custodian and other Person employed to act
hereunder. 
 (l) In no event shall the Trustee be responsible or liable for any special, indirect, punitive or
consequential loss or damage of any kind whatsoever (including, but not limited to, loss of profit), irrespective of whether the Trustee has been advised of the likelihood of such loss or damage and regardless of the form of action. 

(m) 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 which are consistent with accepted practices in the
banking industry to resume performance as soon as practicable under the circumstances. 
 SECTION 7.03. Individual Rights of
Trustee. 
 The Trustee in its individual or any other capacity may become the owner or pledgee of Notes and may
otherwise deal with the Company or any Affiliate of the Company with the same rights it would have if it were not Trustee. However, in the event that the Trustee acquires any conflicting interest as defined in the TIA it must eliminate such conflict
within 90 days, apply to the Commission for permission to continue as Trustee or resign. Any Agent may do the same with like rights and duties. The Trustee shall also be subject to Sections 7.10 and 7.11 hereof. 

SECTION 7.04. Trustee’s Disclaimer. 
 The Trustee shall not be responsible for and makes no representation as to the validity or adequacy of this Indenture or the Notes or the Guarantees, it shall not be accountable for the Company’s use
of the proceeds from the Notes or the Guarantees any money paid to the Company or upon the Company’s direction under any provision of this Indenture, it shall not be responsible for the use or application of any money received by any Paying
Agent other than the Trustee, and it shall not be responsible for any statement or recital herein or any statement in the Notes or the Guarantees or any other document in connection with the sale of the Notes or the Guarantees or pursuant to this
Indenture other than its certificate of authentication. 
 SECTION 7.05. Notice of Defaults. 

If a Default or Event of Default occurs and is continuing and if it is actually known to a Responsible Officer of the Trustee, the Trustee
shall mail to the Holders a notice of the Default or Event of Default within 90 days after it occurs. Except in the case of a Default or Event of Default in payment of principal of, premium, if any, or interest on any Note, the Trustee may withhold
the notice if and so long as a committee of its Responsible Officers in good faith determines that withholding the notice is in the interests of the Holders. 
 SECTION 7.06. Reports by Trustee to Holders. 
 Within 60 days after
each January 15 beginning with the January 15 following the date of this Indenture, and for so long as Notes remain outstanding, the Trustee shall mail to the Holders a brief report dated as of such

  
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reporting date that complies with TIA §313(a) (but if no event described in TIA §313(a) has occurred within the twelve months preceding the reporting date, no report need be
transmitted). The Trustee also shall comply with TIA §313(b)(2) to the extent applicable. The Trustee shall also transmit by mail all reports as required by TIA §313(c). 

A copy of each report at the time of its mailing to the Holders shall be mailed to the Company and filed with the Commission and each
stock exchange on which the Notes are listed in accordance with TIA §313(d). The Company shall promptly notify the Trustee when the Notes are listed on any stock exchange and any delisting thereof. 

SECTION 7.07. Compensation and Indemnity. 
 The Company shall pay to the Trustee from time to time reasonable compensation for its acceptance of this Indenture and services hereunder as the Company and the Trustee shall from time to time agree in
writing. The Trustee’s compensation shall not be limited by any law on compensation of a trustee of an express trust. The Company shall reimburse the Trustee promptly upon request for all reasonable disbursements, advances and expenses incurred
or made by it in addition to the compensation for its services. Such expenses shall include the reasonable compensation, disbursements and expenses of the Trustee’s agents and counsel. 

The Company shall indemnify the Trustee (in its capacity as Trustee) or any predecessor Trustee (in its capacity as Trustee) against any
and all losses, claims, damages, penalties, fines, liabilities or expenses, including incidental and out-of-pocket expenses and reasonable attorneys fees (for purposes of this Article 7, “ losses”) incurred by it arising
out of or in connection with the acceptance or administration of its duties under this Indenture, including the costs and expenses of enforcing this Indenture against the Company (including this Section 7.07) and defending itself against any
claim (whether asserted by the Company or any Holder or any other Person) or liability in connection with the exercise or performance of any of its powers or duties hereunder, except to the extent such losses are determined to have been caused by
its own gross negligence, willful misconduct or bad faith. The Trustee shall notify the Company promptly of any claim for which it may seek indemnity. Failure by the Trustee to so notify the Company shall not relieve the Company of its obligations
under this Indenture. The Company shall defend the claim, and the Trustee shall cooperate in the defense. The Trustee may have separate counsel if the Trustee has been reasonably advised by counsel that there may be one or more legal defenses
available to it that are different from or additional to those available to the Company and in the reasonable judgment of such counsel it is advisable for the Trustee to engage separate counsel. The Company shall pay the reasonable fees and expenses
of such counsel. The Company need not pay for any settlement made without its consent, which consent shall not be unreasonably withheld. The Company need not reimburse any expense or indemnify against any loss incurred by the Trustee that has been
determined to have been caused by the Trustee’s own gross negligence, willful misconduct or bad faith. 
 The obligations
of the Company under this Section 7.07 shall survive the satisfaction and discharge of this Indenture, the resignation or removal of the Trustee and payment in full of the Notes through the expiration of the applicable statute of limitations.

 To secure the Company’s payment obligations in this Section, the Trustee shall have a Lien prior to the Notes on all
money or property held or collected by the Trustee, except that held in trust to pay principal, premium, if any, and interest on particular Notes. Such Lien shall survive the satisfaction and discharge of this Indenture. 

When the Trustee incurs expenses or renders services after an Event of Default specified in Section 6.01(vii) or (viii) hereof
occurs, the expenses and the compensation for the services (including the fees and expenses of its agents and counsel) are intended to constitute expenses of administration under any Bankruptcy Law. 

The Trustee shall comply with the provisions of TIA §313(b)(2) to the extent applicable. 

The provisions of this Section 7.07 shall survive the resignation or removal of the Trustee, the discharge of the
Company’s and the Guarantors’ obligations pursuant to Article 8 or Article 12 and the termination of this Indenture. “Trustee” for the purposes of this Section 7.07 shall include any predecessor Trustee and the Trustee in
each of its capacities hereunder and each agent, custodian and other person employed to act hereunder; provided, however, that the negligence, willful misconduct or bad faith of any Trustee hereunder shall not affect the rights of any
other Trustee hereunder. 

  
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 SECTION 7.08. Replacement of Trustee. 

A resignation or removal of the Trustee and appointment of a successor Trustee shall become effective only upon the successor
Trustee’s acceptance of appointment as provided in this Section 7.08. 
 The Trustee may resign in writing at any time
upon 30 days’ prior notice to the Company and be discharged from the trust hereby created by so notifying the Company. The Holders of a majority in aggregate principal amount of the then outstanding Notes may remove the Trustee by so notifying
the Trustee and the Company in writing. The Company may remove the Trustee if: 
 (a) the Trustee fails to comply
with Section 7.10 hereof; 
 (b) the Trustee is adjudged bankrupt or insolvent or an order for relief is
entered with respect to the Trustee under any Bankruptcy Law; 
 (c) a custodian or public officer takes charge
of the Trustee or its property; or 
 (d) the Trustee becomes incapable of acting. 

If the Trustee resigns or is removed or if a vacancy exists in the office of Trustee for any reason (the Trustee in such event being
referred to herein as the retiring Trustee), the Company shall promptly appoint a successor Trustee. Within one year after the successor Trustee takes office, the Holders of a majority in principal amount of the then outstanding Notes may appoint a
successor Trustee to replace the successor Trustee appointed by the Company. 
 If a successor Trustee does not take office
within 30 days after the retiring Trustee resigns or is removed, the retiring Trustee, the Company, or the Holders of at least 10% in aggregate principal amount of the then outstanding Notes may petition, at the expense of the Company, any court of
competent jurisdiction for the appointment of a successor Trustee. 
 If the Trustee, after written request by any Holder who
has been a Holder for at least six months, fails to comply with Section 7.10 hereof, such Holder may petition any court of competent jurisdiction for the removal of the Trustee and the appointment of a successor Trustee. 

A successor Trustee shall deliver a written acceptance of its appointment to the retiring Trustee and to the Company. Thereupon, the
resignation or removal of the retiring Trustee shall become effective, and the successor Trustee shall have all the rights, powers and duties of the Trustee under this Indenture. The successor Trustee shall mail a notice of its succession to
Holders. Subject to the Lien provided for in Section 7.07 hereof, the retiring Trustee shall promptly transfer all property held by it as Trustee to the successor Trustee; provided, however, that all sums owing to the Trustee
hereunder shall have been paid. Notwithstanding replacement of the Trustee pursuant to this Section 7.08, the Company’s obligations under Section 7.07 hereof shall continue for the benefit of the retiring Trustee. 

In the case of an appointment hereunder of a separate or successor Trustee with respect to the Notes, the Company, the Guarantors, any
retiring Trustee and each successor or separate Trustee with respect to the Notes shall execute and deliver an indenture supplemental hereto (1) which shall contain such provisions as shall be deemed necessary or desirable to confirm that all
the rights, powers, trusts and duties of any retiring Trustee with respect to the Notes as to which any such retiring Trustee is not retiring shall continue to be vested in such retiring Trustee and (2) that shall add to or change any of the
provisions of this Indenture as shall be necessary to provide for or facilitate the administration of the trusts hereunder by more than one Trustee, it being understood that nothing herein or in such supplemental indenture shall constitute such
Trustee co-trustees of the same trust and that each such separate, retiring or successor Trustee shall be Trustee of a trust or trusts hereunder separate and apart from any trust or trusts hereunder administered by any such other Trustee.

  
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 SECTION 7.09. Successor Trustee by Merger, Etc. 

If the Trustee consolidates, merges or converts into, or transfers all or substantially all of its corporate trust business to, another
corporation or banking association, the successor corporation or banking association without any further act shall, if such successor corporation or banking association is otherwise eligible hereunder, be the successor Trustee. 

SECTION 7.10. Eligibility; Disqualification. 
 There shall at all times be a Trustee hereunder that is a Person organized and doing business under the laws of the United States of America or of any state thereof that is authorized under such laws to
exercise corporate trustee power, that is subject to supervision or examination by federal or state authorities and that has a combined capital and surplus of at least $50.0 million (or a wholly-owned subsidiary of a bank or trust company, or of a
bank holding company, the principal subsidiary of which is a bank or trust company having a combined capital and surplus of at least $50.0 million) as set forth in its most recent published annual report of condition. 

This Indenture shall always have a Trustee who satisfies the requirements of TIA §310(a)(1), (2) and (5). The Trustee is
subject to TIA §310(b). There shall be excluded from the operation of TIA Section 310(b)(i) any indenture or indentures under which other securities or certificates of interest or participation in other securities of the Company or any of
the Guarantors are outstanding if the requirements for such exclusion set forth in TIA Section 310(b)(i) are met. 
 SECTION 7.11.
Preferential Collection of Claims Against Company. 
 The Trustee is subject to TIA §311(a), excluding any
creditor relationship listed in TIA §311(b). A Trustee who has resigned or been removed shall be subject to TIA § 311(a) to the extent indicated therein. 
 ARTICLE 8.  
 LEGAL DEFEASANCE AND COVENANT DEFEASANCE

 SECTION 8.01. Option to Effect Legal Defeasance or Covenant Defeasance. 

The Company may, at its option and at any time, elect to have either Section 8.02 or 8.03 hereof be applied to all outstanding Notes
upon compliance with the conditions set forth in this Article 8. 
 SECTION 8.02. Legal Defeasance and
Discharge. 
 Upon the Company’s exercise under Section 8.01 of the option applicable to this
Section 8.02, the Company shall, subject to the satisfaction of the conditions set forth in Section 8.04, be deemed to have been discharged from its obligations with respect to all outstanding Notes on the date the conditions set forth
below are satisfied (hereinafter, “Legal Defeasance”) and each Guarantor shall be released from all of its obligations under its Guarantee. For this purpose, Legal Defeasance means that the Company shall be deemed to have
paid and discharged the entire Debt represented by the outstanding Notes, which shall thereafter be deemed to be “outstanding” only for the purposes of Section 8.05 and the other Sections of this Indenture referred to in (a) and
(b) below, and to have satisfied all its other obligations under the Notes and this Indenture (and the Trustee, on demand of and at the expense of the Company, shall execute proper instruments acknowledging the same), except for the following
provisions which shall survive until otherwise terminated or discharged hereunder: (a) the rights of Holders of outstanding Notes to receive solely from the trust fund described in Section 8.04, and as more fully set forth in such Section,
payments in respect of the principal of, premium, if any, or interest on such Notes when such payments are due, (b) the Company’s obligations with respect to such Notes under Article 2 and Sections 4.01 and 4.02, (c) the rights,
powers, trusts, duties and immunities of the Trustee hereunder and the Company’s obligations in connection therewith and (d) this Article 8. If the Company exercises under Section 8.01 the option applicable to

  
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this Section 8.02, subject to the satisfaction of the conditions set forth in Section 8.04, payment of the Notes may not be accelerated because of an Event of Default. Subject to
compliance with this Article 8, the Company may exercise its option under this Section 8.02 notwithstanding the prior exercise of its option under Section 8.03. 
 SECTION 8.03. Covenant Defeasance. 
 Upon the Company’s exercise
under Section 8.01 of the option applicable to this Section 8.03, the Company shall, subject to the satisfaction of the conditions set forth in Section 8.04, be released from its obligations under the covenants contained in Sections
4.08 through 4.18 hereof, and the operation of Section 5.01, with respect to the outstanding Notes on and after the date the conditions set forth in Section 8.04 are satisfied (hereinafter, “Covenant Defeasance”)
and each Guarantor shall be released from all of its obligations under its Guarantee with respect to such covenants in connection with such outstanding Notes and the Notes shall thereafter be deemed not “outstanding” for the purposes of
any direction, waiver, consent or declaration or act of Holders (and the consequences of any thereof) in connection with such covenants, but shall continue to be deemed “outstanding” for all other purposes hereunder (it being understood
that such Notes shall not be deemed outstanding for accounting purposes). For this purpose, Covenant Defeasance means that, with respect to the outstanding Notes, the Company may omit to comply with and shall have no liability in respect of any
term, condition or limitation set forth in any such covenant, whether directly or indirectly, by reason of any reference elsewhere herein to any such covenant or by reason of any reference in any such covenant to any other provision herein or in any
other document and such omission to comply shall not constitute a Default or an Event of Default under Section 6.01, but, except as specified above, the remainder of this Indenture and such Notes shall be unaffected thereby. If the Company
exercises under Section 8.01 the option applicable to this Section 8.03, subject to the satisfaction of the conditions set forth in Section 8.04, payment of the Notes may not be accelerated because of an Event of Default specified in
clauses (iii), (iv) (with respect to the covenants contained in Sections 4.08 through 4.18 hereof), (v), (vi), (vii) and (viii) of Section 6.01 (but in the case of (vii) and (viii) of Section 6.01, with respect to
Significant Subsidiaries only) or because of the Company’s failure to comply with Section 5.01. 
 SECTION 8.04. Conditions to
Legal or Covenant Defeasance. 
 The following shall be the conditions to the application of either Section 8.02 or
8.03 to the outstanding Notes. 
 The Legal Defeasance or Covenant Defeasance may be exercised only if: 

(a) the Company irrevocably deposits with the Trustee, in trust (the “defeasance trust”), for the
benefit of the Holders, cash in U.S. dollars, non-callable Government Securities, or a combination of cash in U.S. dollars and non-callable Government Securities, in amounts as will be sufficient, in the opinion of a nationally recognized firm of
independent public accountants expressed in a written certificate thereof delivered to the Trustee, to pay the principal of, and interest and premium and Additional Interest, if any, on the outstanding Notes on the Stated Maturity or on the next
Redemption Date, as the case may be, and the Company must specify whether the Notes are being defeased to maturity or to such particular Redemption Date; 
 (b) in the case of Legal Defeasance, the Company shall deliver to the Trustee an Opinion of Counsel reasonably acceptable to the Trustee confirming that (i) the Company has received from the Internal
Revenue Service a ruling directed to it or (ii) since the Issue Date, there has been a change in the applicable federal income tax law (including by reason of a published ruling from the Internal Revenue Service), in either case to the effect
that, and based thereon such Opinion of Counsel shall confirm that, the Holders of the outstanding Notes will not recognize income, gain or loss for federal income tax purposes as a result of such Legal Defeasance and will be subject to federal
income tax on the same amounts, in the same manner and at the same times as would have been the case if such Legal Defeasance had not occurred; 

  
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 (c) in the case of Covenant Defeasance, the Company shall deliver to the
Trustee an Opinion of Counsel reasonably acceptable to the Trustee confirming that the Holders of the outstanding Notes will not recognize income, gain or loss for federal income tax purposes as a result of such Covenant Defeasance and will be
subject to federal income tax on the same amounts, in the same manner and at the same times as would have been the case if such Covenant Defeasance had not occurred; 

(d) no Default or Event of Default has occurred or is continuing on the date of such deposit (other than a Default or
Event of Default resulting from the borrowing of funds to be applied to such deposit); 
 (e) such Legal
Defeasance or Covenant Defeasance shall not result in a breach or violation of, or constitute a default under, any material agreement or instrument (other than this Indenture) to which the Company or any Restricted Subsidiary is a party or by which
the Company or any Restricted Subsidiary is bound; 
 (f) reserved; 

(g) the Company shall deliver to the Trustee an Officers’ Certificate stating that the deposit was not made by the
Company with the intent of preferring the Holders over other creditors of the Company with the intent of defeating, hindering, delaying or defrauding such other creditors; and 

(h) the Company shall deliver to the Trustee an Officers’ Certificate and an Opinion of Counsel, each stating that
all conditions precedent relating to the Legal Defeasance or the Covenant Defeasance have been complied with. 
 SECTION 8.05. Deposited
Cash and Government Securities to be Held in Trust; Other Miscellaneous Provisions. 
 Subject to Section 8.06, all
cash and non-callable Government Securities (including the proceeds thereof) deposited with the Trustee (or other qualifying trustee, collectively for purposes of this Section 8.05, the “Trustee”) pursuant to
Section 8.04 in respect of the outstanding Notes shall be held in trust and applied by the Trustee, in accordance with the provisions of such Notes and this Indenture, to the payment, either directly or through any Paying Agent (including the
Company acting as Paying Agent) as the Trustee may determine, to the Holders of all sums due and to become due thereon in respect of principal, premium, if any, and interest but such cash and securities need not be segregated from other funds except
to the extent required by law. 
 The Company shall pay and indemnify the Trustee against any tax, fee or other charge imposed
on or assessed against the cash or non-callable Government Securities deposited pursuant to Section 8.04 hereof or the principal and interest received in respect thereof other than any such tax, fee or other charge which by law is for the
account of the Holders of the outstanding Notes. 
 Anything in this Article 8 to the contrary notwithstanding, the Trustee
shall deliver or pay to the Company from time to time upon the request of the Company any cash or non-callable Government Securities held by it as provided in Section 8.04 which, in the opinion of a nationally recognized firm of independent
certified public accountants expressed in a written certification thereof delivered to the Trustee, are in excess of the amount thereof that would then be required to be deposited to effect an equivalent Legal Defeasance or Covenant Defeasance.

 SECTION 8.06. Repayment to Company. 
 The Trustee shall promptly, and in any event, no later than five (5) Business Days, pay to the Company after request therefor, any excess money held with respect to the Notes at such time in excess
of amounts required to pay any of the Company’s Obligations then owing with respect to the Notes. 
 Any cash or
non-callable Government Securities deposited with the Trustee or any Paying Agent, or then held by the Company, in trust for the payment of the principal, premium, if any, or interest on any Note and remaining unclaimed for one year after such
principal, premium, if any, or interest has become due and payable shall be paid to the Company on its request or (if then held by the Company) shall, subject to applicable abandoned 

  
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property law, be discharged from such trust; and the Holder shall thereafter, as an unsecured creditor, look only to the Company for payment thereof, and all liability of the Trustee or such
Paying Agent with respect to such cash and securities, and all liability of the Company as trustee thereof, shall thereupon cease; provided, however, that the Trustee or such Paying Agent, before being required to make any such
repayment, may at the expense of the Company cause to be published once, in the New York Times and The Wall Street Journal (national edition), notice that such cash and securities remains unclaimed and that, after a date specified
therein, which shall not be less than 30 days from the date of such notification or publication, any unclaimed balance of such cash and securities then remaining shall be repaid to the Company. 

SECTION 8.07. Reinstatement. 
 If the Trustee or Paying Agent is unable to apply any cash or non-callable Government Securities in accordance with Section 8.02 or 8.03, as the case may be, by reason of any order or judgment of any
court or governmental authority enjoining, restraining or otherwise prohibiting such application, then the Company’s obligations under this Indenture and the Notes shall be revived and reinstated as though no deposit had occurred pursuant to
Section 8.02 or 8.03 until such time as the Trustee or Paying Agent is permitted to apply all such cash and securities in accordance with Section 8.02 or 8.03, as the case may be; provided, however, that, if the Company makes
any payment of principal of, premium, if any, or interest on any Note following the reinstatement of its obligations, the Company shall be subrogated to the rights of the Holders to receive such payment from the cash and securities held by the
Trustee or Paying Agent. 
 ARTICLE 9.  
 AMENDMENT, SUPPLEMENT AND WAIVER 
 SECTION 9.01. Without Consent of Holders of
Notes. 
 Notwithstanding Section 9.02 of this Indenture, the Company, the Guarantors, and the Trustee may amend or
supplement this Indenture or the Notes or the Guarantees without the consent of any Holder to: 
 (1) to cure any
ambiguity, defect or inconsistency, 
 (2) to provide for uncertificated notes in addition to or in place of
certificated notes, 
 (3) to provide for the assumption of the Company’s or a Guarantor’s obligations
to Holders of Notes in the case of a merger or consolidation or sale of all or substantially all of the Company’s assets or Guarantor’s assets that is permitted by this Indenture, 

(4) to provide for the issuance of Additional Notes in accordance with the provisions set forth in this Indenture on the
Issue Date, 
 (5) to make any change that would provide any additional rights or benefits to the Holders of
Notes or that does not adversely affect the legal rights under this Indenture of any Holder, 
 (6) to comply
with requirements of the Commission in order to effect or maintain the qualification of this Indenture under the TIA, 
 (7) to allow any Guarantor to guarantee the Notes or to comply with Section 4.15 or 10.03, or 
 (8) to conform any provision of this Indenture to the “Description of Notes” contained in the Offering Memorandum. 

  
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 SECTION 9.02. With Consent of Holders of Notes. 

Except as provided below in this Section 9.02, the Company and the Guarantors and the Trustee may amend or supplement this Indenture
and the Notes and the Guarantees with the consent of the Holders of at least a majority in aggregate principal amount of the Notes, including Additional Notes, if any, then outstanding voting as a single class (including consents obtained in
connection with a purchase of or tender offer or exchange offer for the Notes), and, subject to Sections 6.04 and 6.07, any existing Default or Event of Default (except a continuing Default or Event of Default in (i) the payment of principal,
premium, if any, or interest on the Notes and (ii) in respect of a covenant or provision which under this Indenture cannot be modified or amended without the consent of the Holder of each Note affected by such modification or amendment) or
compliance with any provision of this Indenture or the Notes may be waived with the consent of the Holders of at least a majority in aggregate principal amount of the Notes, including Additional Notes, if any, then outstanding voting as a single
class (including consents obtained in connection with a purchase of or tender offer or exchange offer for the Notes). 
 Without
the consent of each Holder affected, an amendment or waiver under this Section 9.02 may not (with respect to any Notes held by a non-consenting Holder): 
 (i) reduce the principal amount of Notes whose holders must consent to an amendment, supplement or waiver, 
 (ii) reduce the principal of or change the fixed maturity of any Note or alter the provisions with respect to the redemption or repurchase of the Notes (other than provisions relating to Sections 4.12 and
4.17), 
 (iii) reduce the rate of or change the time for payment of interest on any Note, 

(iv) waive a Default or Event of Default in the payment of principal of or premium, if any, or Additional Interest, if
any, or interest on the Notes (except a rescission of acceleration of the Notes by the Holders of at least a majority in aggregate principal amount of the Notes and a waiver of the payment default that resulted from the acceleration), 

(v) make any Note payable in money other than that stated in the Notes, 

(vi) make any change in the provisions of this Indenture relating to waivers of past Defaults or the rights of holders of
Notes to receive payments of principal of or premium, if any, or interest on the Notes, 
 (vii) waive a
redemption or repurchase payment with respect to any Note (other than a payment required by Section 4.12 or 4.17), 
 (viii) release any Guarantor from any of its obligations under its Guarantee or this Indenture, except in accordance with the terms of this Indenture, 

(ix) expressly subordinate in right of payment the Notes or any Guarantee to any other Indebtedness of the Company or any
Guarantor, or 
 (x) make any change in the foregoing amendment and waiver provisions. 

The Company may, but shall not be obligated to, fix a record date for the purpose of determining the Persons entitled to consent to any
supplemental indenture. If a record date is fixed, the Holders on such record date, or their duly designated proxies, and only such Persons, shall be entitled to consent to such supplemental indenture, whether or not such Holders remain Holders
after such record date; provided that unless such consent shall have become effective by virtue of the requisite percentage having been obtained prior to the date which is 120 days after such record date, any such consent previously given
shall automatically and without further action by any Holder be cancelled and of no further effect. 

  
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 It shall not be necessary for the consent of the Holders under this Section 9.02 to
approve the particular form of any proposed amendment or waiver, but it shall be sufficient if such consent approves the substance thereof. 
 After an amendment, supplement or waiver under this Section 9.02 becomes effective, the Company shall mail to the Holder of each Note affected thereby to such Holder’s address appearing in the
Security Register a notice briefly describing the amendment, supplement or waiver. Any failure of the Company to mail such notice, or any defect therein, shall not, however, in any way impair or affect the validity of any such amended or
supplemental indenture or waiver. 
 SECTION 9.03. Compliance With Trust Indenture Act. 

Every amendment or supplement to this Indenture or the Notes shall be set forth in an amended or supplemental indenture that complies with
the TIA as then in effect. 
 SECTION 9.04. Revocation and Effect of Consents. 

Until an amendment, supplement or waiver becomes effective, a consent to it by a Holder is a continuing consent by the Holder of a Note
and every subsequent Holder of a Note or portion thereof that evidences the same debt as the consenting Holder’s Note, even if notation of the consent is not made on any Note. However, any such Holder or subsequent Holder may revoke the consent
as to its Note or portion thereof if the Trustee receives written notice of revocation before the date the waiver, supplement or amendment becomes effective. An amendment, supplement or waiver shall become effective in accordance with its terms and
thereafter shall bind every Holder. 
 SECTION 9.05. Notation on or Exchange of Notes. 

The Trustee may place an appropriate notation about an amendment, supplement or waiver on any Note thereafter authenticated. The Company
in exchange for all Notes may issue and, upon receipt of an Authentication Order in accordance with Section 2.02 hereof, the Trustee shall authenticate new Notes that reflect the amendment, supplement or waiver. 

Failure to make the appropriate notation or issue a new Note shall not affect the validity and effect of such amendment, supplement or
waiver. 
 SECTION 9.06. Trustee to Sign Amendments, Etc. 
 The Trustee shall sign any amended or supplemental indenture authorized pursuant to this Article 9 if the amendment or supplement does not adversely affect the rights, duties, liabilities or
immunities of the Trustee. None of the Company nor any Guarantor may sign an amendment or supplemental indenture until its Board of Directors (or committee serving a similar function) approves it. In executing any amended or supplemental indenture,
the Trustee shall be provided with and (subject to Section 7.01 hereof) shall be fully protected in relying upon an Officers’ Certificate and an Opinion of Counsel stating that the execution of such amended or supplemental indenture is
authorized or permitted by this Indenture and that such amended or supplemental indenture is the legal, valid and binding obligation of the Company enforceable against it in accordance with its terms, subject to customary exceptions and that such
amended or supplemental indenture complies with the provisions hereof (including Section 9.03). Any supplemental indenture executed for the purpose of conforming any provision in this Indenture to the “Description of the Notes” in the
Offering Memorandum shall be based upon an Officers’ Certificate delivered to the Trustee stating that such provision was intended to be a substantially verbatim recitation of a provision of this Indenture. 

  
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 ARTICLE 10. 
 GUARANTEES 
 SECTION 10.01. Guarantee. 

Subject to this Article 10, the Guarantors hereby unconditionally guarantee to each Holder of a Note authenticated and delivered by
the Trustee and to the Trustee and its successors and assigns: (a) the due and punctual payment of the principal of, premium, if any, and interest on the Notes, subject to any applicable grace period, whether at Stated Maturity, by
acceleration, redemption or otherwise, the due and punctual payment of interest on the overdue principal of and premium, if any, and, to the extent permitted by law, interest, and the due and punctual performance of all other obligations of the
Company to the Holders or the Trustee under this Indenture, the Registration Rights Agreement or any other agreement with or for the benefit of the Holders or the Trustee, all in accordance with the terms hereof and thereof; and (b) in case of
any extension of time of payment or renewal of any Notes or any of such other obligations, that same shall be promptly paid in full when due or performed in accordance with the terms of the extension or renewal, whether at Stated Maturity, by
acceleration pursuant to Section 6.02, redemption or otherwise. Failing payment when due of any amount so guaranteed or any performance so guaranteed for whatever reason, the Guarantors shall be jointly and severally obligated to pay the same
immediately. Each Guarantor agrees that this is a guarantee of payment and not a guarantee of collection. 
 Each Guarantor
hereby agrees that its obligations with regard to its Guarantee shall be joint and several, unconditional, irrespective of the validity or enforceability of the Notes or the obligations of the Company under this Indenture, the absence of any action
to enforce the same, the recovery of any judgment against the Company or any other obligor with respect to this Indenture, the Notes or the Obligations of the Company under this Indenture or the Notes, any action to enforce the same or any other
circumstances (other than complete performance) which might otherwise constitute a legal or equitable discharge or defense of a Guarantor. Each Guarantor further, to the extent permitted by law, waives and relinquishes all claims, rights and
remedies accorded by applicable law to guarantors and agrees not to assert or take advantage of any such claims, rights or remedies, including but not limited to: (a) any right to require any of the Trustee, the Holders or the Company (each a
“Benefited Party”), as a condition of payment or performance by such Guarantor, to (1) proceed against the Company, any other guarantor (including any other Guarantor) of the Obligations under the Guarantees or any other
Person, (2) proceed against or exhaust any security held from the Company, any such other guarantor or any other Person, (3) proceed against or have resort to any balance of any deposit account or credit on the books of any Benefited Party
in favor of the Company or any other Person, or (4) pursue any other remedy in the power of any Benefited Party whatsoever; (b) any defense arising by reason of the incapacity, lack of authority or any disability or other defense of the
Company including any defense based on or arising out of the lack of validity or the unenforceability of the Obligations under the Guarantees or any agreement or instrument relating thereto or by reason of the cessation of the liability of the
Company from any cause other than payment in full of the Obligations under the Guarantees; (c) any defense based upon any statute or rule of law which provides that the obligation of a surety must be neither larger in amount nor in other
respects more burdensome than that of the principal; (d) any defense based upon any Benefited Party’s errors or omissions in the administration of the Obligations under the Guarantees, except behavior which amounts to bad faith; (e)(1) any
principles or provisions of law, statutory or otherwise, which are or might be in conflict with the terms of the Guarantees and any legal or equitable discharge of such Guarantor’s obligations hereunder, (2) the benefit of any statute of
limitations affecting such Guarantor’s liability hereunder or the enforcement hereof, (3) any rights to set-offs, recoupments and counterclaims and (4) promptness, diligence and any requirement that any Benefited Party protect,
secure, perfect or insure any security interest or lien or any property subject thereto; (f) notices, demands, presentations, protests, notices of protest, notices of dishonor and notices of any action or inaction, including acceptance of the
Guarantees, notices of Default under the Notes or any agreement or instrument related thereto, notices of any renewal, extension or modification of the Obligations under the Guarantees or any agreement related thereto, and notices of any extension
of credit to the Company and any right to consent to any thereof; (g) to the extent permitted under applicable law, the benefits of any “One Action” rule and (h) any defenses or benefits that may be derived from or afforded by
law which limit the liability of or exonerate guarantors or sureties, or which may conflict with the terms of the Guarantees. Except to the extent expressly provided herein, including Sections 8.02, 8.03 and 10.05, each Guarantor hereby covenants
that its Guarantee shall not be discharged except by complete performance of the obligations contained in its Guarantee and this Indenture. 

  
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 If any Holder or the Trustee is required by any court or otherwise to return to the
Company, the Guarantors or any custodian, trustee, liquidator or other similar official acting in relation to either the Company or the Guarantors, any amount paid by either to the Trustee or such Holder, this Guarantee, to the extent theretofore
discharged, shall be reinstated in full force and effect. 
 Each Guarantor agrees that it shall not be entitled to any right of
subrogation in relation to the Holders in respect of any obligations guaranteed hereby until payment in full of all obligations guaranteed hereby. Each Guarantor further agrees that, as between the Guarantors, on the one hand, and the Holders and
the Trustee, on the other hand, (x) the maturity of the obligations guaranteed hereby may be accelerated as provided in Section 6.02 hereof for the purposes of this Guarantee, notwithstanding any stay, injunction or other prohibition
preventing such acceleration in respect of the obligations guaranteed hereby and (y) in the event of any declaration of acceleration of such obligations as provided in Section 6.02 hereof, such obligations (whether or not due and payable)
shall forthwith become due and payable by the Guarantors for the purpose of this Guarantee. The Guarantors shall have the right to seek contribution from any non-paying Guarantor so long as the exercise of such right does not impair the rights of
the Holders under the Guarantee and a right to seek reimbursement from the Company. 
 SECTION 10.02. Limitation on Guarantor
Liability. 
 (a) Each Guarantor, and by its acceptance of Notes, each Holder, hereby confirms that it is the intention
of all such parties that the guarantee of such Guarantor not constitute a fraudulent transfer or conveyance for purposes of Bankruptcy Law, the Uniform Fraudulent Conveyance Act, the Uniform Fraudulent Transfer Act or any similar federal or state
law to the extent applicable to any Guarantee. To effectuate the foregoing intention, the Trustee, the Holders and the Guarantors hereby irrevocably agree that each Guarantor’s liability shall be that amount from time to time equal to the
aggregate liability of such Guarantor under the guarantee, but shall be limited to the lesser of (a) the aggregate amount of the Company’s obligations under the Notes and this Indenture or (b) the amount, if any, which would not have
(1) rendered the Guarantor “insolvent” (as such term is defined in the Federal Bankruptcy Code and in the Debtor and Creditor Law of the State of New York) or (2) left it with unreasonably small capital at the time its Guarantee
with respect to the Notes was entered into, after giving effect to the incurrence of existing Debt immediately before such time; provided, however, it shall be a presumption in any lawsuit or proceeding in which a Guarantor is a party
that the amount guaranteed pursuant to the Guarantee with respect to the Notes is the amount described in clause (a) above unless any creditor, or representative of creditors of the Guarantor, or debtor in possession or trustee in
bankruptcy of the Guarantor, otherwise proves in a lawsuit that the aggregate liability of the Guarantor is limited to the amount described in clause (b). 
 (b) In making any determination as to the solvency or sufficiency of capital of a Guarantor in accordance with the proviso of Section 10.02(a), the right of each Guarantor to contribution from other
Guarantors and reimbursement from the Company, and any other rights such Guarantor may have, contractual or otherwise, shall be taken into account. 
 SECTION 10.03. Execution and Delivery of Guarantee. 
 To evidence its
Guarantee set forth in Section 10.01, each Guarantor hereby agrees that this Indenture shall be executed on behalf of such Guarantor by its President, one of its Vice Presidents or its Treasurer. 

Each Guarantor hereby agrees that its Guarantee set forth in Section 10.01 shall remain in full force and effect notwithstanding the
absence of the endorsement of a notation of such Guarantee on the Notes. 
 If an Officer whose signature is on this Indenture
no longer holds that office at the time the Trustee authenticates the Note, the Guarantee shall be valid nevertheless. 
 The
delivery of any Note by the Trustee, after the authentication thereof hereunder, shall constitute due delivery of the Guarantee set forth in this Indenture on behalf of the Guarantors. 

  
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 The Company hereby agrees that it shall cause each Person that becomes obligated to provide
a Guarantee pursuant to Section 4.15 to execute a supplemental indenture substantially in the form of Exhibit E, pursuant to which such Person provides the guarantee set forth in this Article 10 and otherwise assumes the obligations and
accepts the rights of a Guarantor under this Indenture, in each case with the same effect and to the same extent as if such Person had been named herein as a Guarantor. 
 SECTION 10.04. Guarantors May Consolidate, Etc., on Certain Terms. 

Except as otherwise provided in Section 10.05, no Guarantor may consolidate with or merge with or into (whether or not such Guarantor
is the surviving Person) another Person whether or not affiliated with such Guarantor unless: 
 (a) subject to
Section 10.05, the Person formed by or surviving any such consolidation or merger (if other than a Guarantor or the Company) unconditionally assumes all the obligations of such Guarantor, pursuant to a supplemental indenture in form and
substance reasonably satisfactory to the Trustee, under this Indenture, the Guarantee and any Registration Rights Agreements on the terms set forth herein or therein; and 

(b) the Guarantor complies with the requirements of Article 5 hereof. 

In case of any such consolidation, merger, sale or conveyance and upon the assumption by the successor Person, by supplemental indenture,
executed and delivered to the Trustee and satisfactory in form to the Trustee, of the Guarantee endorsed upon the Notes and the due and punctual performance of all of the covenants and conditions of this Indenture to be performed by the Guarantor,
such successor Person shall succeed to and be substituted for the Guarantor with the same effect as if it had been named herein as a Guarantor. Such successor Person thereupon may cause to be signed any or all of the Guarantees to be endorsed upon
all of the Notes issuable hereunder which theretofore shall not have been signed by the Company and delivered to the Trustee. All the Guarantees so issued shall in all respects have the same legal rank and benefit under this Indenture as the
Guarantees theretofore and thereafter issued in accordance with the terms of this Indenture as though all of such Guarantees had been issued at the date of the execution hereof. 

Except as set forth in Articles 4 and 5, and notwithstanding clauses (a) and (b) above, nothing contained in this Indenture or
in any of the Notes shall prevent any consolidation or merger of a Guarantor with or into the Company or another Guarantor, or shall prevent any sale or conveyance of the property of a Guarantor as an entirety or substantially as an entirety to the
Company or another Guarantor. 
 SECTION 10.05. Releases Following Merger, Consolidation or Sale of Assets, Etc. 

In the event of a sale or other disposition of all or substantially all of the assets of any Guarantor, by way of merger, consolidation or
otherwise, or a sale or other disposition of all of the Capital Stock of any Guarantor, in each case to a Person that is not (either before or after giving effect to such transactions) a Subsidiary of the Company, then such Guarantor (in the event
of a sale or other disposition, by way of merger, consolidation or otherwise, of all of the Capital Stock of such Guarantor) or the corporation acquiring the property (in the event of a sale or other disposition of all or substantially all of the
assets of such Guarantor) shall be released and relieved of any obligations under its Guarantee; provided that the net proceeds of such sale or other disposition shall be applied in accordance with the applicable provisions of this Indenture,
including without limitation Section 4.12. If a Restricted Subsidiary is designated as an Unrestricted Subsidiary in accordance with the provisions of Section 4.16, such Subsidiary shall be released and relieved of any obligations under
its Guarantee. Upon delivery by the Company to the Trustee of an Officers’ Certificate and an Opinion of Counsel to the effect that such sale or other disposition was made by the Company in accordance with the provisions of this Indenture,
including without limitation Section 4.12, the Trustee shall execute any documents reasonably required in order to evidence the release of any Guarantor from its obligations under its Guarantee. 

Any Guarantor not released from its obligations under its Guarantee shall remain liable for the full amount of principal of and interest
on the Notes and for the other obligations of any Guarantor under this Indenture as provided in this Article 10. 

  
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 ARTICLE 11.  

SATISFACTION AND DISCHARGE 
 SECTION 11.01. Satisfaction and Discharge. 
 This Indenture shall be
discharged and shall cease to be of further effect, except as to surviving rights of registration of transfer or exchange of the Notes, as to all Notes issued hereunder, when: 

(a) either: 
 (i) all Notes that have been previously authenticated and delivered (except lost, stolen or destroyed Notes that have been replaced or paid and Notes for whose payment money has previously been deposited
in trust or segregated and held in trust by the Company and is thereafter repaid to the Company or discharged from the trust) have been delivered to the Trustee for cancellation; or 

(ii) (A) all Notes that have not been previously delivered to the Trustee for cancellation have become due and
payable by their terms or have been called for redemption, and the Company has irrevocably deposited or caused to be deposited with the Trustee as trust funds in trust solely for the benefit of the Holders, cash in U.S. dollars, non-callable
Government Securities, or a combination thereof, in such amounts as shall be sufficient, without consideration of any reinvestment of interest, to pay and discharge the entire Indebtedness on the Notes not previously delivered to the Trustee for
cancellation or redemption for principal, premium, if any, and Additional Interest, if any, on the Notes to the date of deposit, in the case of Notes that have become due and payable, or to the Stated Maturity or Redemption Date, as the case may be;
(B) the Company has paid all other sums payable by the Company with respect to the Notes under this Indenture; and (C) the Company has delivered irrevocable instructions to the Trustee to apply the deposited money toward the payment of the
Notes at Stated Maturity or on the Redemption Date, as the case may be. 
 in the case of either clause (i) or (ii):

 (x) no Default or Event of Default shall have occurred and be continuing on the date of such deposit or shall
occur as a result of such deposit and such deposit will not result in a breach or violation of, or constitute a default under, any other instrument to which the Company is a party or by which the Company is bound; and 

(y) the Company shall have delivered to the Trustee an Officers’ Certificate and Opinion of Counsel stating that all
conditions precedent relating to the satisfaction and discharge of this Indenture have been satisfied. 
 SECTION 11.02. Deposited Cash
and Government Securities to be Held in Trust; Other Miscellaneous Provisions. 
 Subject to Section 11.03, all cash
and non-callable Government Securities (including the proceeds thereof) deposited with the Trustee (or other qualifying trustee, collectively for purposes of this Section 11.02, the “Trustee”) pursuant to
Section 11.01 hereof in respect of the outstanding Notes shall be held in trust and applied by the Trustee, in accordance with the provisions of such Notes and this Indenture, to the payment, either directly or through any Paying Agent
(including the Company acting as Paying Agent) as the Trustee may determine, to the Holders of such Notes of all sums due and to become due thereon in respect of principal, premium, if any, and interest but such cash and securities need not be
segregated from other funds except to the extent required by law. 

  
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 SECTION 11.03. Repayment to Company. 

Any cash or non-callable Government Securities deposited with the Trustee or any Paying Agent, or then held by the Company, in trust for
the payment of the principal of, premium, if any, or interest on, any Note and remaining unclaimed for two years after such principal, and premium, if any, or interest has become due and payable shall be paid to the Company on its request or (if
then held by the Company) shall, subject to applicable abandoned property law, be discharged from such trust; and any Holder shall thereafter, as an unsecured creditor, look only to the Company for payment thereof, and all liability of the Trustee
or such Paying Agent with respect to such cash and securities, and all liability of the Company as trustee thereof, shall thereupon cease; provided, however, that the Trustee or such Paying Agent, before being required to make any such
repayment, may at the expense of the Company cause to be published once, in the New York Times and The Wall Street Journal (national edition), notice that such cash and securities remains unclaimed and that, after a date specified
therein, which shall not be less than 30 days from the date of such notification or publication, any unclaimed balance of such cash and securities then remaining shall be repaid to the Company. 

ARTICLE 12. 
 MISCELLANEOUS 
 SECTION 12.01. Trust Indenture Act Controls.

 If any provision of this Indenture limits, qualifies or conflicts with another provision which is required to be included in
this Indenture by the TIA, the provision required by the TIA shall control. 
 SECTION 12.02. Notices. 

Any notice or communication by the Company or the Trustee to the other is duly given if in writing and delivered in person or mailed by
first class mail (registered or certified, return receipt requested), facsimile transmission or overnight air courier guaranteeing next-day delivery, to the other’s address: 

If to the Company: 
 Great Lakes Dredge & Dock Corporation 
 2122 York Road 

Oak Brook, Illinois 60523 
 Attention: President and Chief Financial Officer 
 Telecopier No.:
(610) 574-3007 
 With a copy to: 
 Neal, Gerber & Eisenberg LLP 
 Two North LaSalle Street, Suite 1700

 Chicago, Illinois 60602 
 Attention: Ross Emmerman 
 Telecopier No: (312) 429-3574 

If to the Trustee: 
 Wells Fargo Bank, National Association 
 230 West Monroe Street, Suite 2900

 Chicago, Illinois 60606 
 Attention: Corporate Trust Services 
 Telecopier No.: (312) 726-2158

  
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 With a copy to: 
 Drinker Biddle & Reath LLP 
 191 North Wacker Drive, Suite 3700

 Chicago, Illinois 60606 
 Attention: Steven M. Wagner 
 Facsimile: (312) 569-3000 

The Company or the Trustee, by notice to the other, may designate additional or different addresses for subsequent notices or
communications. 
 All notices and communications (other than those sent to the Trustee or Holders) shall be deemed to have been
duly given: at the time delivered by hand, if personally delivered; five (5) Business Days after being deposited in the mail, postage prepaid, if mailed; when receipt acknowledged, if sent by facsimile transmission; and the next Business
Day after timely delivery to the courier, if sent by overnight air courier guaranteeing next-day delivery. All notices and communications to the Trustee or Holders shall be deemed duly given and effective only upon receipt. 

Any notice or communication to a Holder shall be mailed by first class mail, certified or registered, return receipt requested, or by
overnight air courier guaranteeing next-day delivery to its address shown on the Security Register. Any notice or communication shall also be so mailed to any Person described in TIA § 313(c), to the extent required by the TIA. Failure to
mail a notice or communication to a Holder or any defect in it shall not affect its sufficiency with respect to other Holders. 

If a notice or communication is mailed in the manner provided above within the time prescribed, it is duly given, whether or not the
addressee receives it. 
 If the Company mails a notice or communication to Holders, it shall mail a copy to the Trustee and
each Agent at the same time. 
 SECTION 12.03. Communication by Holders of Notes With Other Holders of Notes. 

Holders may communicate pursuant to TIA §312(b) with other Holders with respect to their rights under this Indenture or the Notes.
The Company, the Trustee, the Registrar and anyone else shall have the protection of TIA §312(c). 
 SECTION 12.04. Certificate and
Opinion as to Conditions Precedent. 
 Upon any request or application by the Company to the Trustee to take any action
under any provision of this Indenture, the Company shall furnish to the Trustee: 
 (a) an Officers’
Certificate in form and substance reasonably satisfactory to the Trustee (which shall include the statements set forth in Section 12.05 hereof) stating that, in the opinion of the signers, all conditions precedent and covenants, if any,
provided for in this Indenture relating to the proposed action have been complied with; and 
 (b) an Opinion of
Counsel in form and substance reasonably satisfactory to the Trustee (which shall include the statements set forth in Section 12.05 hereof) stating that, in the opinion of such counsel, all such conditions precedent and covenants have been
complied with. 
 SECTION 12.05. Statements Required in Certificate or Opinion. 

Each certificate or opinion with respect to compliance with a condition or covenant provided for in this Indenture (other than a
certificate provided pursuant to TIA §314(a)(4)) shall comply with the provisions of TIA §314(e) and shall include: 
 (a) a statement that the Person making such certificate or opinion has read such covenant or condition; 

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

 (d) a statement as to whether or not, in the opinion of such Person, such condition or covenant has been
complied with. 
 With respect to matters of fact, an Opinion of Counsel may rely on an Officers’ Certificate, certificates
of public officials or reports or opinions of experts. 
 SECTION 12.06. Rules by Trustee and Agents. 

The Trustee may make reasonable rules for action by or at a meeting of Holders. The Registrar or Paying Agent may make reasonable rules
and set reasonable requirements for its functions. 
 SECTION 12.07. No Personal Liability of Directors, Officers, Employees and
Stockholders. 
 No past, present or future director, manager, officer, employee, incorporator, stockholder or member of
the Company, any Guarantor, any parent entity of the Company or any Subsidiary thereof, as such, shall have any liability for any obligations of the Company or of the Guarantors under the Notes, this Indenture, the Guarantees or for any claim based
on, in respect of, or by reason of, such obligations or their creation. Each Holder of Notes by accepting a Note waives and releases all such liability. The waiver and release are part of the consideration for issuance of the Notes. The waiver and
release may not be effective to waive or release liabilities under the federal securities laws. 
 SECTION 12.08. Governing Law.

 THE INTERNAL LAW OF THE STATE OF NEW YORK SHALL GOVERN AND BE USED TO CONSTRUE THIS INDENTURE AND THE NOTES WITHOUT GIVING
EFFECT TO APPLICABLE PRINCIPLES OF CONFLICTS OF LAW TO THE EXTENT THAT THE APPLICATION OF THE LAWS OF ANOTHER JURISDICTION WOULD BE REQUIRED THEREBY. 
 SECTION 12.09. No Adverse Interpretation of Other Agreements. 
 This
Indenture may not be used to interpret any other indenture, loan or debt agreement of the Company or its Subsidiaries or of any other Person. Any such indenture, loan or debt agreement may not be used to interpret this Indenture. 

SECTION 12.10. Successors. 
 All covenants and agreements of the Company in this Indenture and the Notes shall bind its successors. All covenants and agreements of the Trustee in this Indenture shall bind its successors. 

SECTION 12.11. Severability. 
 In case any provision in this Indenture or in the Notes shall be invalid, illegal or unenforceable, the validity, legality and enforceability of the remaining provisions shall not in any way be affected
or impaired thereby. 

  
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 SECTION 12.12. Counterpart Originals. 

The parties may sign any number of copies of this Indenture. Each signed copy shall be an original, but all of them together represent the
same agreement. 
 SECTION 12.13. Table of Contents, Headings, Etc. 

The Table of Contents, Cross-Reference Table and Headings in this Indenture have been inserted for convenience of reference only, are not
to be considered a part of this Indenture and shall in no way modify or restrict any of the terms or provisions hereof. 
 SECTION 12.14.
Qualification of This Indenture. 
 The Company shall qualify this Indenture under the TIA in accordance with the
terms and conditions of any Registration Rights Agreement and shall pay all reasonable costs and expenses (including attorneys’ fees and expenses for the Company, the Trustee and the Holders) incurred in connection therewith, including, but not
limited to, costs and expenses of qualification of this Indenture and the Notes and printing this Indenture and the Notes. The Trustee shall be entitled to receive from the Company any such Officers’ Certificates, Opinions of Counsel or other
documentation as it may reasonably request in connection with any such qualification of this Indenture under the TIA. 
 SECTION 12.15.
Effect of Legal Holidays 
 In any case where any Interest Payment Date, Redemption Date, Stated Maturity of any
Note, or the last date on which a Holder has the right to convert a Note at a particular conversion price, or any date on which any defaulted interest is proposed to be paid, shall not be a Business Day, then (notwithstanding any other provision of
this Indenture or of the Notes) payment of interest or principal (and premium, if any) or, if applicable to a particular series of Notes, conversion, need not be made on such date, but may be made on the next succeeding Business Day with the same
force and effect as if made on the Interest Payment Date or Redemption Date, at the Stated Maturity, or on the last day for such conversion, or on the date on which the defaulted interest is proposed to be paid, and no interest shall accrue for the
period from and after such Interest Payment Date, Redemption Date or Stated Maturity or on the last day for such conversion, or date for the payment of defaulted interest, as the case may be. 
 SECTION 12.16. Waiver of Jury Trial 
 EACH OF THE COMPANY, THE
GUARANTORS AND THE TRUSTEE, AND BY ITS ACCEPTANCE THEREOF, EACH HOLDER OF A NOTE, HEREBY IRREVOCABLY WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY LEGAL PROCEEDING ARISING OUT OF OR RELATING TO
THIS INDENTURE, THE NOTES, THE GUARANTEES OR THE TRANSACTIONS CONTEMPLATED HEREBY. 
 [Signatures on following page] 

  
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 SIGNATURES 
 Dated as of January 28, 2011 
  

			
	COMPANY:
	
	GREAT LAKES DREDGE & DOCK CORPORATION,
a Delaware corporation
		
	By:	 	/s/ Bruce J. Biemeck
		 	Bruce J. Biemeck
		 	President, Chief Financial Officer and Treasurer
	
	GUARANTORS:
	
	GREAT LAKES DREDGE & DOCK COMPANY, LLC, a Delaware limited liability company
		
	By:	 	/s/ Bruce J. Biemeck
		 	Bruce J. Biemeck
		 	President, Chief Financial Officer and Treasurer
	
	DAWSON MARINE SERVICES COMPANY,
a Delaware corporation
		
	By:	 	/s/ Bruce J. Biemeck
		 	Bruce J. Biemeck, Senior Vice President,
		 	Chief Financial Officer and Treasurer
	
	GREAT LAKES CARIBBEAN DREDGING, INC.,
a Delaware corporation
		
	By:	 	/s/ Bruce J. Biemeck
		 	Bruce J. Biemeck, Senior Vice President,
		 	Chief Financial Officer and Treasurer
	
	NASDI HOLDINGS CORPORATION,
a Delaware corporation
		
	By:	 	/s/ Bruce J. Biemeck
		 	Bruce J. Biemeck, Vice President,
		 	Chief Financial Officer and Treasurer
	
	FIFTY-THREE DREDGING CORPORATION,
a New Jersey corporation
		
	By:	 	/s/ Bruce J. Biemeck
		 	Bruce J. Biemeck, Treasurer
		 	

  
 S-1

 TRUSTEE: 

 

			
	WELLS FARGO BANK, NATIONAL ASSOCIATION
		
	By:	 	/s/ Gregory S. Clarke
		 	Name: Gregory S. Clarke
		 	Title: Vice President

  
 S-2

 EXHIBIT A 
 (face of Note) 
 7.375% Senior Notes due 2019 

[Insert the Global Note Legend, if applicable pursuant to the terms of the Indenture] 

[Insert the Private Placement Legend, if applicable pursuant to the terms of the Indenture] 

[Insert the Regulation S Temporary Global Note Legend, if applicable pursuant to the terms of the Indenture] 

 

			
	CUSIP No.	 	$            

 GREAT LAKES DREDGE & DOCK CORPORATION 
 promises to pay to CEDE & CO., or
registered assigns, the principal sum                     of Dollars
($             ) on February 1, 2019. 
 Interest Payment Dates:
February 1 and August 1, commencing August 1, 2011. 
 Record Dates: January 15 and July 15. 

Dated:            , 20        . 

  
 A-1

 IN WITNESS WHEREOF, the Company has caused this Note to be signed manually or by facsimile
by its duly authorized officer. 
  

			
	GREAT LAKES DREDGE & DOCK CORPORATION
		
	By:	 	 
		 	Name: Bruce J. Biemeck
		 	Title:   President, Chief Financial Officer and             Treasurer

This is one of the Global 
 Notes referred to in
the 
 within-mentioned Indenture: 
  

			
	WELLS FARGO BANK, NATIONAL ASSOCIATION,
as Trustee
		
	By:	 	 
		 	Authorized Signatory

 Dated
            , 20         

  
 A-2

 (Back of Note) 
 7.375% Senior Notes due 2019 
 Capitalized terms used herein shall have the
meanings assigned to them in the Indenture referred to below unless otherwise indicated. 
 1. Interest. Great
Lakes Dredge & Dock Corporation, a Delaware corporation (“the Company”), promises to pay interest on the principal amount of this Note at 7.375% per annum until maturity and shall pay Additional Interest, if
any, as provided in Section 4 of the Registration Rights Agreement. The Company shall pay interest semi-annually on February 1 and August 1 of each year, or if any such day is not a Business Day, on the next succeeding Business Day
(each an “Interest Payment Date”). Interest on the Notes shall accrue from the most recent date to which interest has been paid or, if no interest has been paid, from January 28, 2011; provided, however,
that if there is no existing Default in the payment of interest, and if this Note is authenticated between a record date referred to on the face hereof and the next succeeding Interest Payment Date, interest shall accrue from such next succeeding
Interest Payment Date; provided, further, that the first Interest Payment Date shall be August 1, 2011. The Company shall pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue
principal and premium, if any, from time to time at a rate that is 1% per annum in excess of the interest rate then in effect under the Indenture and this Note; it shall pay interest (including post-petition interest in any proceeding under any
Bankruptcy Law) on overdue installments of interest and Additional Interest, if any (without regard to any applicable grace periods), from time to time at the same rate to the extent lawful. Interest shall be computed on the basis of a 360-day year
of twelve 30-day months. 
 2. Method of Payment. The Company shall pay interest on the Notes (except defaulted
interest) to the Persons in whose name this Note (or one or more Predecessor Notes) is registered at the close of business on the January 15 or July 15 next preceding the Interest Payment Date, even if such Notes are cancelled after such
record date and on or before such Interest Payment Date, except as provided in Section 2.12 of the Indenture with respect to defaulted interest. The Notes shall be payable as to principal, premium, if any, and interest and Additional Interest,
if any, at the office or agency of the Company maintained for such purpose, or, at the option of the Company, payment of interest may be made by check mailed to the Holders at their addresses set forth in the Security Register; provided,
however, that payment by wire transfer of immediately available funds shall be required with respect to principal of and interest and Additional Interest, if any, and premium, if any, on, all Global Notes and all other Notes the Holders of
which shall have provided wire transfer instructions to the Company or the Paying Agent. Such payment shall be in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private
debts. 
 3. Paying Agent and Registrar. Initially, Wells Fargo Bank, National Association, the Trustee under the
Indenture, shall act as Paying Agent and Registrar. The Company may change any Paying Agent or Registrar without notice to any Holder. The Company or any of its Subsidiaries may act in any such capacity. 

4. Indenture. The Company issued the Notes under an Indenture, dated as of January 28, 2011
(“Indenture”), among the Company, the Guarantors from time to time party thereto and the Trustee. The terms of the Notes include those stated in the Indenture and those made part of the Indenture by reference to the Trust
Indenture Act of 1939, as amended (15 U.S. Code §§ 77aaa-77bbbb). The Notes are subject to all such terms, and Holders are referred to the Indenture and such Act for a statement of such terms. To the extent any provision of this
Note conflicts with the express provisions of the Indenture, the provisions of the Indenture shall govern and be controlling. The Notes are obligations of the Company unlimited in aggregate principal amount. 

  
 A-3

 5. Optional Redemption. 

(a) Except as set forth in clauses (b) and (c) of this Paragraph 5, the Notes will not be redeemable at the option of the
Company prior to February 1, 2015. Starting on that date, the Company may redeem all or any portion of the Notes, at once or over time, after giving the required notice under the Indenture. The Notes may be redeemed at the redemption prices
(expressed as percentages of principal amount) set forth below, in cash, plus accrued and unpaid interest and Additional Interest, if any, to the applicable Redemption Date (subject to the right of Holders of record on the relevant Regular Record
Date to receive interest due on the relevant Interest Payment Date), if redeemed during the twelve-month period commencing on February 1 of the years indicated below: 

 

					
	 Year
	  	Percentage	 
	 2015
	  	 	103.688	% 
	 2016
	  	 	101.844	% 
	 2017 and thereafter
	  	 	100.000	% 

 (b) At any time prior to
February 1, 2014, the Company may (but will not have the obligation to) on any one or more occasions redeem up to 35% of the original principal amount of the Notes issued under the Indenture at a redemption price (expressed as a percentage of
principal amount) equal to 107.375% of the principal amount thereof, plus accrued and unpaid interest and Additional Interest, if any, thereon to the Redemption Date (subject to the right of Holders of record on the relevant Regular Record Date to
receive interest due on the relevant Interest Payment Date), with the net cash proceeds of one or more Equity Offerings, provided that at least 65% of the aggregate principal amount of the Notes initially issued under the Indenture remain
outstanding immediately after the occurrence of the redemption (excluding Notes held by the Company and its Subsidiaries); provided, further, that the redemption shall occur within 180 days of the date of the closing of the Equity
Offering. 
 (c) At any time prior to February 1, 2015, the Company may redeem the Notes, in whole or in part after giving
the required notice under the Indenture, in cash, at a redemption price equal to 100% of the principal amount of the Notes redeemed plus the Applicable Premium as of, and accrued and unpaid interest, if any, to the Redemption Date (subject to the
right of the Holders of record on the relevant Regular Record Date to receive interest due on the relevant Interest Payment Date). 
 (c) Any prepayment pursuant to this paragraph shall be made pursuant to the provisions of Sections 3.01 through 3.06 of the Indenture. 

6. Mandatory Redemption. Except as set forth in Sections 4.12 and 4.17 of the Indenture, the Company shall not be required
to make mandatory redemption or sinking fund payments with respect to the Notes. 
 7. Repurchase at Option of
Holder. 
 (a) Upon the occurrence of a Change of Control, each Holder shall have the right to require the Company to
repurchase all or any part (equal to $2,000 or an integral multiple of $1,000 in excess thereof) of such Holder’s Notes (a “Change of Control Offer”) at a purchase price in cash equal to 101% of the aggregate principal
amount of the Notes repurchased, plus accrued and unpaid interest and Additional Interest, if any, on the Notes repurchased, to the Purchase Date (subject to the right of Holders of record on the relevant Regular Record Date to receive interest due
on the relevant Interest Payment Date). 
 (b) When the aggregate amount of Excess Proceeds from Asset Sales exceeds $20.0
million, the Company will be required to make an offer to all Holders of Notes (an “Asset Sale Offer”) to purchase the maximum principal amount of Notes and, if the Company is required to do so under the terms of any other
Indebtedness that is pari passu with the Notes, such other Indebtedness on a pro rata basis with the Notes, that may be purchased out of the Excess Proceeds, at an offer price in cash in an amount equal to 100% of the principal amount
of the Notes plus accrued and unpaid interest and Additional Interest thereon, if any, to the date of repurchase, in accordance with the procedures set forth in the Indenture. To the extent that the aggregate amount of Notes (including Additional
Notes) and other pari passu Indebtedness tendered pursuant to an Asset Sale Offer is less than the Excess Proceeds, the Company (or any Restricted Subsidiary) may use such deficiency for any purpose not prohibited by the Indenture. If the
aggregate principal amount of Notes and other pari passu Indebtedness tendered by holders thereof exceeds the amount of Excess Proceeds, the Trustee shall, subject to Applicable Procedures, select the Notes and such other pari passu
Indebtedness to be purchased on a pro rata basis. Holders of Notes that are the subject of an offer to purchase will receive an Asset Sale Offer from the Company prior to any related purchase date and may elect to have such Notes
purchased by completing the form entitled “Option of Holder to Elect Purchase” on the reverse of the Notes. 

  
 A-4

 8. Notice of Redemption. Notice of redemption shall be mailed at least 30
days but not more than 60 days before the Redemption Date to each Holder whose Notes are to be redeemed at its registered address. Notes in denominations larger than $2,000 may be redeemed in part but only in the amount of $2,000 or whole multiples
of $1,000 in excess thereof, unless all of the Notes held by a Holder are to be redeemed. On and after the Redemption Date interest ceases to accrue on Notes or portions thereof called for redemption. 

9. Denominations, Transfer, Exchange. The Notes are in registered form without
coupons in denominations of $2,000 and integral multiples of $1,000 in excess thereof. This Note shall represent the aggregate principal amount of outstanding Notes from time to time endorsed hereon and the aggregate principal amount of Notes
represented hereby may from time to time be reduced or increased, as appropriate, to reflect exchanges and redemptions. The transfer of Notes may be registered and Notes may be exchanged as provided in the Indenture. The Registrar and the Trustee
may require a Holder, among other things, to furnish appropriate endorsements and transfer documents and the Company may require a Holder to pay any taxes and fees required by law or permitted by the Indenture. The Company need not exchange or
register the transfer of any Note or portion of a Note selected for redemption, except for the unredeemed portion of any Note being redeemed in part. Also, the Company need not exchange or register the transfer of any Notes for a period of 15 days
before a selection of Notes to be redeemed or during the period between a Regular Record Date and the corresponding Interest Payment Date. 
 10. Persons Deemed Owners. The registered Holder of a Note shall be treated as its owner for all purposes. 
 11. Amendment, Supplement and Waiver. Subject to certain exceptions, the Company and the Trustee may amend or supplement the Indenture or the Notes with the consent of
the Holders of a majority in aggregate principal amount of the then outstanding Notes, including Additional Notes, if any, voting as a single class (including consents obtained in connection with a purchase of or tender offer or exchange offer for
the Notes), and, subject to Sections 6.04 and 6.07 of the Indenture, any existing Default or Event of Default (except a continuing Default or Event of Default in the payment of principal, premium, if any, interest or Additional Interest, if any, on
the Notes) or compliance with any provision of the Indenture or the Notes (except for certain covenants and provisions of the Indenture which cannot be amended without the consent of each Holder) may be waived with the consent of the Holders of a
majority in aggregate principal amount of the then outstanding Notes, including Additional Notes, if any, then outstanding voting as a single class (including consents obtained in connection with a purchase of or tender offer or exchange offer for
the Notes). Without the consent of any Holder, the Company and the Trustee may amend or supplement the Indenture or the Notes to cure any ambiguity, defect or inconsistency, to provide for uncertificated notes in addition to or in place of
certificated notes, to provide for the assumption of the Company’s or a Guarantor’s obligations to Holders of Notes in the case of a merger or consolidation or sale of all or substantially all of the Company’s assets, to provide for
the issuance of Additional Notes in accordance with the provisions set forth in the Indenture on the date of the Indenture, to make any change that would provide any additional rights or benefits to the Holders of Notes or that does not adversely
affect the legal rights under the Indenture of any Holder, to comply with requirements of the Commission in order to effect or maintain the qualification of the Indenture under the Trust Indenture Act, to allow any Guarantor to guarantee the Notes,
or to conform any provision of the Indenture to the “Description of Notes” contained in the Offering Memorandum. 

12. Defaults and Remedies. Each of the following is an Event of Default under the Indenture: (i) default for 30 days
in the payment when due of interest on, or Additional Interest with respect to, the Notes; (ii) default in payment when due of the principal of or premium, if any, on the Notes; (iii) failure by the Company or any of its Restricted
Subsidiaries to comply with Section 4.17 of the Indenture; (iv) failure by the Company or any of its Restricted Subsidiaries for 60 days after notice by the Trustee or by the Holders of at least 25% in principal amount of Notes then
outstanding to comply with any of its other agreements in the Indenture or the Notes; (v) default under any mortgage, indenture or instrument under which there may be issued or by which there may be secured or evidenced any Indebtedness for
money borrowed by the Company or any of its Restricted Subsidiaries (or the payment of which is guaranteed by the Company or any of its Restricted Subsidiaries) whether the Indebtedness or guarantee now exists, or is created after the Issue Date,
which default: (A) is caused by a failure to pay principal on such Indebtedness at final stated maturity prior to the expiration of the grace period provided in the Indebtedness on the date of the default (a “Payment
Default”) or (B) results in the acceleration of the Indebtedness prior to its stated maturity and, in each case, the principal amount of any Indebtedness, together with the principal

  
 A-5

 
amount of any other such Indebtedness under which there has been a Payment Default or the maturity of which has been so accelerated (after giving effect to any applicable grace period),
aggregates $20.0 million or more; (vi) failure by the Company or any of its Restricted Subsidiaries to pay final judgments aggregating in excess of $20.0 million (net of any amount with respect to which a reputable insurance company with assets
over $100.0 million has acknowledged liability in writing), which judgments are not paid, discharged or stayed for a period of 60 days after their entry; (vii) certain events of bankruptcy, insolvency or reorganization affecting the Company or
any of its Significant Subsidiaries; and (viii) except as permitted by the Indenture, any Guarantee of any Significant Subsidiary (or group of Guarantors that, collectively, would be a Significant Subsidiary) shall be held in any judicial
proceeding to be unenforceable or invalid or shall cease for any reason to be in full force and effect or any Guarantor that is a Significant Subsidiary (or group of Guarantors that, collectively, would be a Significant Subsidiary), or any Person
acting on behalf of any Guarantor that is a Significant Subsidiary (or group of Guarantors that, collectively, would be a Significant Subsidiary), shall deny or disaffirm its obligations under its Guarantee. 

If any Event of Default occurs and is continuing, the Trustee or the Holders of at least 25% in principal amount of the then outstanding Notes may
declare all the Notes to be due and payable. Upon a declaration of acceleration, principal premium, if any, Additional Interest, if any, and interest on the Notes will become due and payable. Notwithstanding the foregoing, in the case of an Event of
Default arising from certain events of bankruptcy or insolvency described in the Indenture, all outstanding Notes shall become due and payable without further action or notice. Holders may not enforce the Indenture or the Notes except as provided in
the Indenture. Subject to certain limitations, Holders of a majority in aggregate principal amount of the then outstanding Notes may direct the Trustee in its exercise of any trust or power vested in it by the Indenture. The Trustee may withhold
from Holders notice of any continuing Default or Event of Default (except a Default or Event of Default relating to the payment of principal or interest or Additional Interest) if it determines that withholding notice is in their interest. The
Holders of at least a majority in aggregate principal amount of the Notes then outstanding by notice to the Trustee may on behalf of the Holders of all of the Notes waive any existing Default or Event of Default and its consequences under the
Indenture except a continuing Default or Event of Default in (i) the payment of interest or Additional Interest on, or the principal of, the Notes and (ii) in respect of a covenant or provision which under the Indenture cannot be modified
or amended without the consent of the Holder of each Note affected by such modification or amendment. Upon any waiver of a Default or Event of Default, such Default shall cease to exist, and any Event of Default arising therefrom shall be deemed
cured for every purpose of the Indenture but no such waiver shall extend to any subsequent or other Default or Event of Default or impair any right consequent thereon. The Company is required to deliver to the Trustee annually a statement regarding
compliance with the Indenture, and the Company is required upon becoming aware of any Default or Event of Default, to deliver to the Trustee a statement specifying such Default or Event of Default. 

13. Trustee Dealings with Company. Subject to certain limitations, the Trustee in its individual or any other capacity may
become the owner or pledgee of Notes and may otherwise deal with the Company or any Affiliate of the Company with the same rights it would have if it were not Trustee. 
 14. No Recourse Against Others. No past, present or future director, officer, employee, incorporator or stockholder of the Company or of any Guarantor, as such, shall have any liability for
any obligations of the Company or of the Guarantors under the Indenture, the Notes, the Guarantees or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each Holder by accepting a Note waives and releases all
such liability. 
 15. Authentication. This Note shall not be valid until authenticated by the manual signature of
the Trustee or an authenticating agent. 
 16. Abbreviations. Customary abbreviations may be used in the name of a
Holder or an assignee, such as: TEN COM (= tenants in common), TEN ENT (= tenants by the entireties), JT TEN (= joint tenants with right of survivorship and not as tenants in common), CUST (= Custodian), and U/G/M/A (= Uniform Gifts to Minors Act).

  
 A-6

 17. Additional Rights of Holders of Restricted Global Notes and Restricted Definitive
Notes. In addition to the rights provided to Holders of Notes under the Indenture, Holders of Restricted Global Notes and Restricted Definitive Notes that are Initial Notes shall have all the rights set forth in the Registration Rights
Agreement, dated as of the Issue Date, among the Company, the Guarantors from time to time party thereto and the initial purchasers named therein or, in the case of Additional Notes, Holders of Restricted Global Notes and Restricted Definitive Notes
shall have the rights set forth in one or more Registration Rights Agreements, if any, among the Company and the other parties thereto, relating to rights given by the Company to the purchasers of any Additional Notes. 

18. CUSIP Numbers. Pursuant to a recommendation promulgated by the Committee on Uniform Security Identification Procedures,
the Company has caused CUSIP numbers to be printed on the Notes and has directed the Trustee to use CUSIP numbers in notices of redemption as a convenience to Holders. No representation is made as to the accuracy of such numbers either as printed on
the Notes or as contained in any notice of redemption and reliance may be placed only on the other identification numbers placed thereon. 
 19. Governing Law. The internal law of the State of New York shall govern and be used to construe this Note without giving effect to applicable principles of conflicts of law to the extent
that the application of the laws of another jurisdiction would be required thereby. 
 The Company shall furnish to any Holder
upon written request and without charge a copy of the Indenture. Requests may be made to: 
 Great Lakes Dredge & Dock
Corporation 
 2122 York Road 
 Oak Brook, Illinois 60523 
 Attention: Chief Financial Officer 

  
 A-7

 Option of Holder to Elect Purchase 
 If you want to elect to have this Note purchased by the Company pursuant to Section 4.12 or 4.17 of the Indenture, check the box below: 

 

	 ̈	Section 4.12 

  

	 ̈	Section 4.17 

 If you want to elect to have
only part of the Note purchased by the Company pursuant to Section 4.12 or Section 4.17 of the Indenture, state the amount you elect to have purchased: $         

 

									
	Date:	 		 		 	Your Signature:	 	 
		 		 		 		 	(Sign exactly as your name appears on the Note)
				
		 		 		 	Tax Identification No.:

  

			
	Signature Guarantee:	 	 
		 	Signatures must be guaranteed by an “eligible guarantor institution” meeting the requirements of the Registrar, which requirements include membership or participation
in the Security Transfer Agent Medallion Program (“STAMP”) or such other “signature guarantee program” as may be determined by the Registrar in addition to, or in substitution for, STAMP, all in accordance with the Securities
Exchange Act of 1934, as amended.

  
 A-8

 Assignment Form 
 To assign this Note, fill in the form below: 
 (I) or (we) assign and transfer this Note to

  
  
 (Insert assignee’s social security or other tax I.D. no.) 
  

 
 (Print or type assignee’s
name, address and zip code) 
 and irrevocably appoint 
 as agent to transfer this Note on the books of the Company. The agent may substitute another to act for him. 
 Date:              
  

			
	Your Signature:	 	 
		 	(Sign exactly as your name appears on the Note)

 

			
	Signature Guarantee:	 	 
		 	

  
 A-9

 SCHEDULE OF EXCHANGES OF INTERESTS IN THE GLOBAL NOTE 

The following exchanges of a part of this Global Note for an interest in another Global Note or for a Definitive Note, or exchanges of a
part of another Global Note or Definitive Note for an interest in this Global Note, have been made: 
  

									
	 Date of Exchange
	 	Amount of
decrease in
Principal Amount
of this Global Note	 	Amount of increase
in Principal Amount
of this Global Note	 	Principal Amount
of this Global Note
following
such
decrease
(or increase)	 	Signature of
authorized signatory
of Trustee or
Note Custodian

  
 A-10

 EXHIBIT B 
 FORM OF CERTIFICATE OF TRANSFER 
 Great Lakes Dredge & Dock Corporation

 2122 York Road 
 Oak Brook, IL 60523

 Attention: Chief Financial Officer 

Telecopier No.: (610) 574-3007 
 Wells
Fargo Bank, National Association 
 608 Second Avenue South, N9303-121 
 Minneapolis, Minnesota 55479 
 Attention: Corporate Trust Operations 

Email: DAPSReorg@wellsfargo.com 

Re: 7.375% Senior Notes due 2019 
 Reference is hereby made to the Indenture, dated as of January 28, 2011 (the “Indenture”), among Great Lakes Dredge & Dock Corporation, as issuer (the
“Company”), the Guarantors from time to time party thereto and Wells Fargo Bank, National Association, as trustee. Capitalized terms used but not defined herein shall have the meanings given to them in the Indenture. 

                    
                    (the “Transferor”) owns and proposes to transfer the Note[s] or interest in such Note[s] specified in Annex A
hereto, in the principal amount of $             in such Note[s] or interests (the “Transfer”), to
                                         (the
“Transferee”), as further specified in Annex A hereto. In connection with the Transfer, the Transferor hereby certifies that: 

CHECK ALL THAT APPLY 
 1.  ̈ Check if Transferee will take delivery of a beneficial interest in the 144A Global Note or a Definitive Note Pursuant to Rule 144A. The Transfer is being effected pursuant to and in
accordance with Rule 144A under the United States Securities Act of 1933, as amended (the “Securities Act”), and, accordingly, the Transferor hereby further certifies that the beneficial interest or Definitive Note is being
transferred to a Person that the Transferor reasonably believed and believes is purchasing the beneficial interest or Definitive Note for its own account, or for one or more accounts with respect to which such Person exercises sole investment
discretion, and such Person and each such account is a “qualified institutional buyer” within the meaning of Rule 144A in a transaction meeting the requirements of Rule 144A and such Transfer is in compliance with any applicable blue sky
securities laws of any state of the United States. Upon consummation of the proposed Transfer in accordance with the terms of the Indenture, the transferred beneficial interest or Definitive Note will be subject to the restrictions on transfer
enumerated in the Private Placement Legend printed on the 144A Global Note and/or the Definitive Note and in the Indenture and the Securities Act. 
 2.  ̈ Check if Transferee will take delivery of a beneficial interest in the Regulation S Global Note or a Definitive Note pursuant to Regulation
S. The Transfer is being effected pursuant to and in accordance with Rule 903 or Rule 904 under the Securities Act and, accordingly, the Transferor hereby further certifies that (i) the Transfer is not being made to a Person in the
United States and (x) at the time the buy order was originated, the Transferee was outside the United States or such Transferor and any Person acting on its behalf reasonably believed and believes that the Transferee was outside the United
States or (y) the transaction was executed in, on or through the facilities of a designated offshore securities market and neither such Transferor nor any Person acting on its behalf knows that the transaction was prearranged with a buyer in
the United States, (ii) no directed selling efforts have been made in contravention of the requirements of Rule 903(b) or Rule 904(a) of Regulation S under the Securities Act, (iii) the transaction is not part of a plan or scheme to evade
the registration requirements of the 

  
 B-1

 
Securities Act and (iv) if the proposed transfer is being made prior to the expiration of the Distribution Compliance Period, the transfer is not being made to a U.S. Person or for the
account or benefit of a U.S. Person (other than an Initial Purchaser). Upon consummation of the proposed transfer in accordance with the terms of the Indenture, the transferred beneficial interest or Definitive Note will be subject to the
restrictions on transfer enumerated in the Private Placement Legend printed on the Regulation S Global Note, the Temporary Regulation S Global Note and/or the Definitive Note and in the Indenture and the Securities Act. 

3.  ̈ Check and complete if Transferee will take delivery of a beneficial interest
in the IAI Global Note or a Definitive Note pursuant to any provision of the Securities Act other than Rule 144A or Regulation S. The Transfer is being effected in compliance with the transfer restrictions applicable to beneficial interests
in Restricted Global Notes and Restricted Definitive Notes and pursuant to and in accordance with the Securities Act and any applicable blue sky securities laws of any state of the United States, and accordingly the Transferor hereby further
certifies that (check one): 
 (a)  ̈ such Transfer is being
effected pursuant to and in accordance with Rule 144 under the Securities Act; 
 or 

(b)  ̈ such Transfer is being effected to the Company or a subsidiary
thereof; 
 or 
 (c)  ̈ such Transfer is being effected pursuant to an effective registration statement under the Securities Act and in compliance with the prospectus
delivery requirements of the Securities Act; 
 or 

(d)  ̈ such Transfer is being effected to an Institutional Accredited
Investor and pursuant to an exemption from the registration requirements of the Securities Act other than Rule 144A, Rule 144 or Rule 904, and the Transferor hereby further certifies that it has not engaged in any general solicitation within the
meaning of Regulation D under the Securities Act and the Transfer complies with the transfer restrictions applicable to beneficial interests in a Restricted Global Note or Restricted Definitive Notes and the requirements of the exemption claimed,
which certification is supported by (1) a certificate executed by the Transferee in the form of Exhibit D to the Indenture and (2) if such Transfer is in respect of a principal amount of Notes at the time of transfer of less than $250,000,
an Opinion of Counsel provided by the Transferor or the Transferee (a copy of which the Transferor has attached to this certification), to the effect that such Transfer is in compliance with the Securities Act. Upon consummation of the proposed
transfer in accordance with the terms of the Indenture, the transferred beneficial interest or Definitive Note will be subject to the restrictions on transfer enumerated in the Private Placement Legend printed on the IAI Global Note and/or the
Definitive Notes and in the Indenture and the Securities Act. 
 4.  ̈
Check if Transferee will take delivery of a beneficial interest in an Unrestricted Global Note or of an Unrestricted Definitive Note. 
 (a)  ̈ Check if Transfer is pursuant to Rule 144. (i) The Transfer is being effected pursuant to and in accordance with Rule 144 under the
Securities Act and in compliance with the transfer restrictions contained in the Indenture and any applicable blue sky securities laws of any state of the United States and (ii) the restrictions on transfer contained in the Indenture and the
Private Placement Legend are not required in order to maintain compliance with the Securities Act. Upon consummation of the proposed Transfer in accordance with the terms of the Indenture, the transferred beneficial interest or Definitive Note will
no longer be subject to the restrictions on transfer enumerated in the Private Placement Legend printed on the Restricted Global Notes, on Restricted Definitive Notes and in the Indenture. 

  
 B-2

 (b)  ̈ Check if Transfer is Pursuant to
Regulation S. (i) The Transfer is being effected pursuant to and in accordance with Rule 903 or Rule 904 under the Securities Act and in compliance with the transfer restrictions contained in the Indenture and any applicable blue sky
securities laws of any state of the United States and (ii) the restrictions on transfer contained in the Indenture and the Private Placement Legend are not required in order to maintain compliance with the Securities Act. Upon consummation of
the proposed Transfer in accordance with the terms of the Indenture, the transferred beneficial interest or Definitive Note will no longer be subject to the restrictions on transfer enumerated in the Private Placement Legend printed on the
Restricted Global Notes, on Restricted Definitive Notes and in the Indenture. 
 (c)
 ̈ Check if Transfer is Pursuant to Other Exemption. (i) The Transfer is being effected pursuant to and in compliance with an exemption from the registration requirements of the Securities
Act other than Rule 144, Rule 903 or Rule 904 and in compliance with the transfer restrictions contained in the Indenture and any applicable blue sky securities laws of any State of the United States and (ii) the restrictions on transfer
contained in the Indenture and the Private Placement Legend are not required in order to maintain compliance with the Securities Act. Upon consummation of the proposed Transfer in accordance with the terms of the Indenture, the transferred
beneficial interest or Definitive Note will not be subject to the restrictions on transfer enumerated in the Private Placement Legend printed on the Restricted Global Notes or Restricted Definitive Notes and in the Indenture. 

This certificate and the statements contained herein are made for your benefit and the benefit of the Company. 

 

			
	 
	Insert Name of Transferor
		
	By:	 	 
		 	Name:
		 	Title:
		
	Dated:	 	 

  
 B-3

 ANNEX A TO CERTIFICATE OF TRANSFER 

 

	 	1.	The Transferor owns and proposes to transfer the following: 

 CHECK ONE OF (a) OR (b) 
  

	 	(a)	 ̈     a beneficial interest in the: 

 

	 	(i)	 ̈     144A Global Note (CUSIP ), or 

 

	 	(ii)	 ̈     Regulation S Global Note (CUSIP ), or 

 

	 	(iii)	 ̈     IAI Global Note (CUSIP ); or 

 

	 	(b)	 ̈     a Restricted Definitive Note. 

 

	 	2.	After the Transfer the Transferee will hold: 

CHECK ONE OF (a), (b) OR (c) 
  

	 	(a)	 ̈     a beneficial interest in the: 

 

	 	(i)	 ̈     144A Global Note (CUSIP ), or 

 

	 	(ii)	 ̈     Regulation S Global Note (CUSIP ), or 

 

	 	(iii)	 ̈     IAI Global Note (CUSIP ); or 

 

	 	(iv)	 ̈     Unrestricted Global Note (CUSIP ); or 

 

	 	(b)	 ̈     a Restricted Definitive Note; or 

 

	 	(c)	 ̈     an Unrestricted Definitive Note, 

in accordance with the terms of the Indenture. 

  
 B-4

 EXHIBIT C 
 FORM OF CERTIFICATE OF EXCHANGE 
 Great Lakes Dredge & Dock Corporation

 2122 York Road 
 Oak Brook, IL 60523

 Attention: Chief Financial Officer 

Telecopier No.: (610) 574-3007 
 Wells
Fargo Bank, National Association 
 608 Second Avenue South, N9303-121 
 Minneapolis, Minnesota 55479 
 Attention: Corporate Trust Operations 

Email: DAPSReorg@wellsfargo.com 

Re: 7.375% Senior Notes due 2019 
 Reference is hereby made to the Indenture, dated as of January 28, 2011 (the “Indenture”), among Great Lakes Dredge & Dock Corporation, as issuer (the
“Company”), the Guarantors from time to time party thereto and Wells Fargo Bank, National Association, as trustee. Capitalized terms used but not defined herein shall have the meanings given to them in the Indenture. 

                     (the
“Owner”) owns and proposes to exchange the Note[s] or interest in such Note[s] specified herein, in the principal amount of $             in such Note[s] or interests (the
“Exchange”). In connection with the Exchange, the Owner hereby certifies that: 
 1. Exchange of
Restricted Definitive Notes or Beneficial Interests in a Restricted Global Note for Unrestricted Definitive Notes or Beneficial Interests in an Unrestricted Global Note 

(a)  ̈ Check if Exchange is from beneficial interest in a Restricted Global Note to
beneficial interest in an Unrestricted Global Note. In connection with the Exchange of the Owner’s beneficial interest in a Restricted Global Note for a beneficial interest in an Unrestricted Global Note in an equal principal amount, the
Owner hereby certifies (i) the beneficial interest is being acquired for the Owner’s own account without transfer, (ii) such Exchange has been effected in compliance with the transfer restrictions applicable to the Restricted Global
Note and pursuant to and in accordance with the United States Securities Act of 1933, as amended (the “Securities Act”), (iii) the restrictions on transfer contained in the Indenture and the Private Placement Legend are not
required in order to maintain compliance with the Securities Act and (iv) the beneficial interest in an Unrestricted Global Note is being acquired in compliance with any applicable blue sky securities laws of any state of the United States.

 (b)  ̈ Check if Exchange is from beneficial interest in a Restricted Global
Note to Unrestricted Definitive Note. In connection with the Exchange of the Owner’s beneficial interest in a Restricted Global Note for an Unrestricted Definitive Note, the Owner hereby certifies (i) the Unrestricted Definitive Note
is being acquired for the Owner’s own account without transfer, (ii) such Exchange has been effected in compliance with the transfer restrictions applicable to the Restricted Global Note and pursuant to and in accordance with the
Securities Act, (iii) the restrictions on transfer contained in the Indenture and the Private Placement Legend are not required in order to maintain compliance with the Securities Act and (iv) the Unrestricted Definitive Note is being
acquired in compliance with any applicable blue sky securities laws of any state of the United States. 
 (c)  ̈ Check if Exchange is from Restricted Definitive Note to beneficial interest in an Unrestricted Global Note. In connection with the Owner’s Exchange of a Restricted Definitive Note for a
beneficial interest in an Unrestricted Global Note, the Owner hereby certifies (i) the beneficial interest is being acquired for the Owner’s own account without transfer, (ii) such Exchange has been effected in compliance with the
transfer restrictions applicable to Restricted Definitive Notes and pursuant to and in accordance with the Securities Act, (iii) the restrictions on transfer contained in the Indenture and the Private Placement Legend are not required in order
to maintain compliance with the Securities Act and (iv) the beneficial interest is being acquired in compliance with any applicable blue sky securities laws of any state of the United States. 

  
 C-1

 (d)  ̈ Check if Exchange is from
Restricted Definitive Note to Unrestricted Definitive Note. In connection with the Owner’s Exchange of a Restricted Definitive Note for an Unrestricted Definitive Note, the Owner hereby certifies (i) the Unrestricted Definitive Note is
being acquired for the Owner’s own account without transfer, (ii) such Exchange has been effected in compliance with the transfer restrictions applicable to Restricted Definitive Notes and pursuant to and in accordance with the Securities
Act, (iii) the restrictions on transfer contained in the Indenture and the Private Placement Legend are not required in order to maintain compliance with the Securities Act and (iv) the Unrestricted Definitive Note is being acquired in
compliance with any applicable blue sky securities laws of any state of the United States. 
 2. Exchange of Restricted
Definitive Notes or Beneficial Interests in Restricted Global Notes for Restricted Definitive Notes or Beneficial Interests in Restricted Global Notes 
 (a)  ̈ Check if Exchange is from beneficial interest in a Restricted Global Note to Restricted Definitive Note. In connection with the Exchange of the
Owner’s beneficial interest in a Restricted Global Note for a Restricted Definitive Note with an equal principal amount, the Owner hereby certifies that the Restricted Definitive Note is being acquired for the Owner’s own account without
transfer. Upon consummation of the proposed Exchange in accordance with the terms of the Indenture, the Restricted Definitive Note issued will continue to be subject to the restrictions on transfer enumerated in the Private Placement Legend printed
on the Restricted Definitive Note and in the Indenture and the Securities Act. 
 (b)
 ̈ Check if Exchange is from Restricted Definitive Note to beneficial interest in a Restricted Global Note. In connection with the Exchange of the Owner’s Restricted Definitive Note for a
beneficial interest in the [CIRCLE ONE] 144A Global Note, Regulation S Global Note, IAI Global Note with an equal principal amount, the Owner hereby certifies (i) the beneficial interest is being acquired for the Owner’s own account
without transfer and (ii) such Exchange has been effected in compliance with the transfer restrictions applicable to the Restricted Definitive Note and pursuant to and in accordance with the Securities Act, and in compliance with any applicable
blue sky securities laws of any state of the United States. Upon consummation of the proposed Exchange in accordance with the terms of the Indenture, the beneficial interest issued will be subject to the restrictions on transfer enumerated in the
Private Placement Legend printed on the relevant Restricted Global Note and in the Indenture and the Securities Act. 

  
 C-2

 This certificate and the statements contained herein are made for your benefit and the
benefit of the Company. 
  

			
	
	Insert Name of Transferor
		
	By:	 	 
		 	Name:
		 	Title:
	
	Dated:                           
 

  
 C-3

 EXHIBIT D 
 FORM OF CERTIFICATE FROM 
 ACQUIRING INSTITUTIONAL ACCREDITED INVESTOR

 Great Lakes Dredge & Dock Corporation 
 2122 York Road 
 Oak Brook, IL 60523 
 Attention: Chief Financial Officer 
 Telecopier No.: (610) 574-3007 

Wells Fargo Bank, National Association 
 608
Second Avenue South, N9303-121 
 Minneapolis, Minnesota 55479 
 Attention: Corporate Trust Operations 
 Email: DAPSReorg@wellsfargo.com 

Re: 7.375% Senior Notes due 2019 
 Reference is hereby made to the Indenture, dated as of January 28, 2011 (the “Indenture”), among Great Lakes Dredge & Dock Corporation, as issuer (the
“Company”), the Guarantors from time to time party thereto and Wells Fargo Bank, National Association, as trustee. Capitalized terms used but not defined herein shall have the meanings given to them in the Indenture. 

In connection with our proposed purchase of $             aggregate principal
amount of: 
 (a)  ̈ a beneficial interest in a Global Note, or 

(b)  ̈ a Definitive Note, 
 we confirm that: 
 1. We understand that any subsequent transfer of the Notes or
any interest therein is subject to certain restrictions and conditions set forth in the Indenture and the undersigned agrees to be bound by, and not to resell, pledge or otherwise transfer the Notes or any interest therein except in compliance with,
such restrictions and conditions and the United States Securities Act of 1933, as amended (the “Securities Act”). 
 2. We understand that the offer and sale of the Notes have not been registered under the Securities Act, and that the Notes and any interest therein may not be offered or sold except as permitted in the
following sentence. We agree, on our own behalf and on behalf of any accounts for which we are acting as hereinafter stated, that if we should sell the Notes or any interest therein, we will do so only (A) to the Company or any subsidiary
thereof, (B) in accordance with Rule 144A under the Securities Act to a “qualified institutional buyer” (as defined therein), (C) to an institutional “accredited investor” (as defined below) that, prior to such
transfer, furnishes (or has furnished on its behalf by a U.S. broker-dealer) to each of you a signed letter substantially in the form of this letter and, if such transfer is in respect of a principal amount of Notes, at the time of transfer of less
than $250,000, an Opinion of Counsel in form reasonably acceptable to the Company to the effect that such transfer is in compliance with the Securities Act, (D) outside the United States in accordance with Rule 904 of Regulation S under the
Securities Act, (E) pursuant to the provisions of Rule 144(k) under the Securities Act or (F) pursuant to an effective registration statement under the Securities Act, and we further agree to provide to any Person purchasing the Definitive
Note or beneficial interest in a Global Note from us in a transaction meeting the requirements of clauses (A) through (E) of this paragraph a notice advising such purchaser that resales thereof are restricted as stated herein. 

3. We understand that, on any proposed resale of the Notes or beneficial interest therein, we will be required to furnish to each of you
such certifications, legal opinions and other information as each of you may reasonably require to confirm that the proposed sale complies with the foregoing restrictions. We further understand that the Notes purchased by us will bear a legend to
the foregoing effect. 

  
 D-1

 4. We are an institutional “accredited investor” (as defined in Rule 501(a)(1),
(2), (3) or (7) of Regulation D under the Securities Act) and have such knowledge and experience in financial and business matters as to be capable of evaluating the merits and risks of our investment in the Notes, and we and any accounts
for which we are acting are each able to bear the economic risk of our or its investment. We have had access to such financial and other information and have been afforded the opportunity to ask such questions of representatives of the Company and
receive answers thereto, as we deem necessary in connection with our decision to purchase the Notes. 
 5. We are acquiring the
Notes or beneficial interest therein purchased by us for our own account or for one or more accounts (each of which is an institutional “accredited investor”) as to each of which we exercise sole investment discretion and are not acquiring
the Notes with a view to any distribution thereof in a transaction that would violate the Securities Act of the securities laws of any state of the United States or any other applicable jurisdiction. 

Each of you is entitled to rely upon this letter and are irrevocably authorized to produce this letter or a copy hereof to any interested
party in any administrative or legal proceedings or official inquiry with respect to the matters covered hereby. This letter shall be governed by, and construed in accordance with, the laws of the State of New York. 

 

			
	 
	Insert Name of Transferor
		
	By:	 	 
		 	Name:
		 	Title:
	
	Dated:
                            

  
 D-2

 EXHIBIT E 
 FORM OF SUPPLEMENTAL INDENTURE 
 SUPPLEMENTAL INDENTURE (this
“Supplemental Indenture”), dated as of                     , 201    , among
                             (the “New Guarantor”), a subsidiary of Great Lakes Dredge &
Dock Corporation, as issuer (the “Company”), the Company, the existing Guarantors, and Wells Fargo Bank, National Association, as trustee. 
 WITNESSETH 
 WHEREAS, the Company and the existing Guarantors have heretofore
executed and delivered to the Trustee an indenture (as amended, supplemented or otherwise modified, the “Indenture”), dated as of January 28, 2011 providing for the issuance of 7.375% Senior Notes due 2019 (the “Notes”);

 WHEREAS, Section 4.15 of the Indenture provides that under certain circumstances the New Guarantor shall execute and
deliver to the Trustee a supplemental indenture pursuant to which the New Guarantor shall unconditionally guarantee all of the obligations of the Company under the Notes and the Indenture on the terms and conditions set forth herein (the
“Guarantee”); and 
 WHEREAS, pursuant to Section 9.01 of the Indenture, the Trustee, the Guarantors and the
Company are authorized to execute and deliver this Supplemental Indenture. 
 NOW, THEREFORE, in consideration of the foregoing
and for other good and valuable consideration, the receipt of which is hereby acknowledged, the New Guarantor, the Company and the Trustee mutually covenant and agree for the equal and ratable benefit of each other and the Holders of the Notes as
follows: 
 1. Defined Terms. Defined terms used herein without definition shall have the meanings assigned to them in
the Indenture. 
 2. Agreement to Guarantee. The New Guarantor hereby agrees, jointly and severally with all existing
Guarantors (if any), to provide an unconditional Guarantee on the terms and subject to the conditions set forth in Article X of the Indenture and to be bound by all other applicable provisions of the Indenture and the Notes and to perform all of the
obligations and agreements of a Guarantor under the Indenture. 
 3. No Recourse Against Others. No past, present or
future director, manager, officer, employee, incorporator, stockholder or member of the Company, any Guarantor, any parent entity of the Company or any Subsidiary thereof, as such, shall have any liability for any obligations of the Company or the
Guarantors under the Notes, the Indenture, the Guarantees or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each Holder of Notes by accepting a Note waives and releases all such liability. The waiver and
release are part of the consideration for issuance of the Notes. The waiver and release may not be effective to waive liabilities under the federal securities laws. 
 4. Notices. All notices or other communications to the New Guarantor shall be given as provided in Section 12.02 of the Indenture. 

5. Ratification of Indenture; Supplemental Indentures Part of Indenture. Except as expressly amended hereby, the Indenture is in
all respects ratified and confirmed and all the terms, conditions and provisions thereof shall remain in full force and effect. This Supplemental Indenture shall form a part of the Indenture for all purposes, and every Holder of Notes heretofore or
hereafter authenticated and delivered shall be bound hereby. 
 6. GOVERNING LAW. THIS INDENTURE, THE NOTES AND THE
GUARANTEES SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK. 

  
 E-1

 7. Counterparts. The parties may sign any number of copies of this Supplemental
Indenture. Each signed copy shall be an original, but all of them together represent the same agreement. 
 8. Effect of
Headings. The section headings herein are for convenience only and shall not affect the construction hereof. 
 9.
Trustee Makes No Representation. The Trustee makes no representation as to the validity or sufficiency of this Supplemental Indenture. 

  
 E-2

 IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly
executed and attested, all as of the date first above written. 
 Dated:
                    , 20         

 

			
	NEW GUARANTOR
		
	By:	 	 
		 	Name:
		 	Title:

  

			
	
	COMPANY:
	
	GREAT LAKES DREDGE & DOCK CORPORATION, a Delaware corporation
		
	By:	 	 
		 	Bruce J. Biemeck
		 	President, Chief Financial Officer and Treasurer
	
	GUARANTORS:
	
	GREAT LAKES DREDGE & DOCK COMPANY, LLC, a Delaware limited liability company
		
	By:	 	 
		 	Bruce J. Biemeck
		 	President, Chief Financial Officer and Treasurer
	
	DAWSON MARINE SERVICES COMPANY,
a Delaware corporation
		
	By:	 	 
		 	Bruce J. Biemeck, Senior Vice President,
		 	Chief Financial Officer and Treasurer
	
	GREAT LAKES CARIBBEAN DREDGING, INC.,
a Delaware corporation
		
	By:	 	 
		 	Bruce J. Biemeck, Senior Vice President,
		 	Chief Financial Officer and Treasurer
	
	NASDI HOLDINGS CORPORATION,
a Delaware corporation
		
	By:	 	 
		 	Bruce J. Biemeck, Vice President,
		 	Chief Financial Officer and Treasurer

  
 E-3

 
			
	FIFTY-THREE DREDGING CORPORATION,
a New Jersey corporation
		
	By:	 	 
		 	Bruce J. Biemeck, Treasurer

  
 E-4

 TRUSTEE: 

 

			
	WELLS FARGO BANK, NATIONAL ASSOCIATION
		
	By:	 	 
		 	Name:
		 	Title:

  
 E-5

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