Document:

Indenture

 Exhibit 10.1 
  
  
  
 GSI GROUP CORPORATION, 
 THE GUARANTORS

 named herein 
 and 

The Bank of New York Mellon Trust Company, N.A., as Trustee 
  
  
 INDENTURE 
 Dated as of August 20, 2008 
  
  
 11% Senior Notes due 2013

  
  
  

 CROSS-REFERENCE TABLE 
  

			
	 TIA Section
	  	 Indenture
Section

	 310(a)(1)
	  	7.10
	       (a)(2)
	  	7.10
	       (a)(3)
	  	N.A.
	       (a)(4)
	  	N.A.
	       (a)(5)
	  	N.A.
	       (b)
	  	7.08; 7.10; 11.02
	       (b)(1)
	  	7.10
	       (c)
	  	N.A.
	 311(a)
	  	7.11
	       (b)
	  	7.11
	       (c)
	  	N.A.
	 312(a)
	  	2.06
	       (b)
	  	11.03
	       (c)
	  	11.03
	 313(a)
	  	7.06
	       (b)(1)
	  	N.A.
	       (b)(2)
	  	7.06
	       (c)
	  	7.06; 11.02
	       (d)
	  	7.06
	 314(a)
	  	4.02; 4.04; 11.02
	       (b)
	  	N.A.
	       (c)(1)
	  	11.04
	       (c)(2)
	  	11.04
	       (c)(3)
	  	N.A.
	       (d)
	  	N.A.
	       (e)
	  	11.05
	       (f)
	  	N.A.
	 315(a)
	  	7.01(b)
	       (b)
	  	7.05; 11.02
	       (c)
	  	7.01(a)
	       (d)
	  	7.01(c)
	       (e)
	  	6.12
	 316(a) (last sentence)
	  	2.10
	       (a)(1)(A)
	  	6.05
	       (a)(1)(B)
	  	6.04
	       (a)(2)
	  	N.A.
	       (b)
	  	6.08
	       (c)
	  	8.04
	 317(a)(1)
	  	6.09
	       (a)(2)
	  	6.10
	       (b)
	  	2.05; 7.12
	 318(a)
	  	11.01

  
 N.A. means Not Applicable 
 Note: This Cross-Reference Table shall not, for any purpose, be deemed to be a part of the Indenture 

 TABLE OF CONTENTS 
  

					
	 	  	 	  	Page
	ARTICLE One
	
	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 Two
	
	THE NOTES
			
	SECTION 2.01.	  	Amount of Notes	  	28
	SECTION 2.02.	  	Form and Dating	  	28
	SECTION 2.03.	  	Execution and Authentication	  	29
	SECTION 2.04.	  	Registrar and Paying Agent	  	29
	SECTION 2.05.	  	Paying Agent To Hold Money in Trust	  	30
	SECTION 2.06.	  	Holder Lists	  	30
	SECTION 2.07.	  	Transfer and Exchange	  	30
	SECTION 2.08.	  	Replacement Notes	  	31
	SECTION 2.09.	  	Outstanding Notes	  	31
	SECTION 2.10.	  	Treasury Notes	  	31
	SECTION 2.11.	  	Temporary Notes	  	32
	SECTION 2.12.	  	Cancellation	  	32
	SECTION 2.13.	  	Defaulted Interest	  	32
	SECTION 2.14.	  	CUSIP Number	  	32
	SECTION 2.15.	  	Deposit of Moneys	  	33
	SECTION 2.16.	  	Book-Entry Provisions for Global Notes	  	33
	SECTION 2.17.	  	Special Transfer Provisions	  	35
	SECTION 2.18.	  	Computation of Interest	  	36
	
	ARTICLE Three
	
	REDEMPTION
			
	SECTION 3.01.	  	Election To Redeem; Notices to Trustee	  	36
	SECTION 3.02.	  	Selection by Trustee of Notes To Be Redeemed	  	36
	SECTION 3.03.	  	Notice of Redemption	  	37
	SECTION 3.04.	  	Effect of Notice of Redemption	  	38
	SECTION 3.05.	  	Deposit of Redemption Price	  	38
	SECTION 3.06.	  	Notes Redeemed in Part	  	38
	
	ARTICLE Four
	
	COVENANTS
			
	SECTION 4.01.	  	Payment of Notes	  	38

  

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	SECTION 4.02.	  	Reports	  	39
	SECTION 4.03.	  	Waiver of Stay, Extension or Usury Laws	  	39
	SECTION 4.04.	  	Compliance Certificate; Notice of Default	  	40
	SECTION 4.05.	  	Taxes	  	40
	SECTION 4.06.	  	Limitations on Additional Indebtedness	  	40
	SECTION 4.07.	  	[Intentionally left blank]	  	42
	SECTION 4.08.	  	Limitations on Restricted Payments	  	42
	SECTION 4.09.	  	Limitations on Asset Sales	  	45
	SECTION 4.10.	  	Limitations on Transactions with Affiliates	  	47
	SECTION 4.11.	  	Limitations on Liens	  	49
	SECTION 4.12.	  	Conduct of Business	  	49
	SECTION 4.13.	  	Additional Note Guarantees	  	49
	SECTION 4.14.	  	Dividends and Other Payment Restrictions Affecting Restricted Subsidiaries	  	49
	SECTION 4.15.	  	Limitations on Designation of Unrestricted Subsidiaries	  	51
	SECTION 4.16.	  	Limitations on Sale and Leaseback Transactions	  	52
	SECTION 4.17.	  	Maintenance of Properties; Compliance with Law	  	52
	SECTION 4.18.	  	Legal Existence	  	53
	SECTION 4.19.	  	Change of Control Offer	  	53
	SECTION 4.20.	  	Trigger Event	  	54
	
	ARTICLE Five
	
	Successor corporation
			
	SECTION 5.01.	  	Limitations on Mergers, Consolidations, Etc.	  	54
	SECTION 5.02.	  	Successor Person Substituted	  	56
	
	ARTICLE Six
	
	DEFAULTS AND REMEDIES
			
	SECTION 6.01.	  	Events of Default	  	56
	SECTION 6.02.	  	Acceleration and Default Rate	  	58
	SECTION 6.03.	  	Other Remedies	  	58
	SECTION 6.04.	  	Waiver of Past Defaults and Events of Default	  	58
	SECTION 6.05.	  	Control by Majority	  	59
	SECTION 6.06.	  	Limitation on Suits	  	59
	SECTION 6.07.	  	No Personal Liability of Directors, Officers, Employees and Stockholders	  	59
	SECTION 6.08.	  	Rights of Holders To Receive Payment	  	59
	SECTION 6.09.	  	Collection Suit by Trustee	  	59
	SECTION 6.10.	  	Trustee May File Proofs of Claim	  	60
	SECTION 6.11.	  	Priorities	  	60
	SECTION 6.12.	  	Undertaking for Costs	  	60
	SECTION 6.13.	  	Restoration of Rights and Remedies	  	61
	
	ARTICLE Seven
	
	TRUSTEE
			
	SECTION 7.01.	  	Duties of Trustee	  	61

  

 -ii- 

					
	SECTION 7.02.	  	Rights of Trustee	  	62
	SECTION 7.03.	  	Individual Rights of Trustee	  	64
	SECTION 7.04.	  	Trustee’s Disclaimer	  	64
	SECTION 7.05.	  	Notice of Defaults	  	64
	SECTION 7.06.	  	Reports by Trustee to Holders	  	64
	SECTION 7.07.	  	Compensation and Indemnity	  	65
	SECTION 7.08.	  	Replacement of Trustee	  	65
	SECTION 7.09.	  	Successor Trustee by Consolidation, Merger, Etc.	  	66
	SECTION 7.10.	  	Eligibility; Disqualification	  	66
	SECTION 7.11.	  	Preferential Collection of Claims Against Issuer	  	66
	SECTION 7.12.	  	Paying Agents	  	66
	
	ARTICLE Eight
	
	AMENDMENTS, SUPPLEMENTS AND WAIVERS
			
	SECTION 8.01.	  	Without Consent of Holders	  	67
	SECTION 8.02.	  	With Consent of Holders	  	68
	SECTION 8.03.	  	Compliance with Trust Indenture Act	  	69
	SECTION 8.04.	  	Revocation and Effect of Consents	  	69
	SECTION 8.05.	  	Notation on or Exchange of Notes	  	69
	SECTION 8.06.	  	Trustee To Sign Amendments, Etc.	  	70
	
	ARTICLE Nine
	
	DISCHARGE OF INDENTURE; DEFEASANCE
			
	SECTION 9.01.	  	Discharge of Indenture	  	70
	SECTION 9.02.	  	Legal Defeasance	  	71
	SECTION 9.03.	  	Covenant Defeasance	  	71
	SECTION 9.04.	  	Conditions to Legal Defeasance or Covenant Defeasance	  	71
	SECTION 9.05.	  	Deposited Money and U.S. Government Obligations To Be Held in Trust; Other Miscellaneous Provisions	  	73
	SECTION 9.06.	  	Reinstatement	  	73
	SECTION 9.07.	  	Moneys Held by Paying Agent	  	73
	SECTION 9.08.	  	Moneys Held by Trustee	  	73
	
	ARTICLE Ten
	
	GUARANTEE OF NOTES
			
	SECTION 10.01.	  	Guarantee	  	74
	SECTION 10.02.	  	Execution and Delivery of Guarantee	  	75
	SECTION 10.03.	  	Limitation of Guarantee	  	75
	SECTION 10.04.	  	Release of Guarantor	  	75
	SECTION 10.05.	  	Waiver of Subrogation	  	76

  

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	ARTICLE Eleven
	
	MISCELLANEOUS
	SECTION 11.01.	  	Trust Indenture Act Controls	  	76
	SECTION 11.02.	  	Notices	  	77
	SECTION 11.03.	  	Communications by Holders with Other Holders	  	78
	SECTION 11.04.	  	Certificate and Opinion as to Conditions Precedent	  	78
	SECTION 11.05.	  	Statements Required in Certificate and Opinion	  	78
	SECTION 11.06.	  	Rules by Trustee and Agents	  	78
	SECTION 11.07.	  	Business Days; Legal Holidays	  	79
	SECTION 11.08.	  	Governing Law	  	79
	SECTION 11.09.	  	No Adverse Interpretation of Other Agreements	  	79
	SECTION 11.10.	  	No Recourse Against Others	  	79
	SECTION 11.11.	  	Successors	  	79
	SECTION 11.12.	  	Multiple Counterparts	  	80
	SECTION 11.13.	  	Table of Contents, Headings, Etc.	  	80
	SECTION 11.14.	  	Separability	  	80
	SECTION 11.15.	  	Acts of Holders. Record Dates	  	80
	SECTION 11.16.	  	Failure or Indulgence Not Waiver	  	81

 EXHIBITS 
  

					
	Exhibit A.	  	Form of Note	  	A-1
	Exhibit B.	  	Form of Legend for Rule 144A Notes and Other Notes That Are Restricted Notes	  	B-1
	Exhibit C.	  	Form of Legend for Regulation S Note	  	C-1
	Exhibit D.	  	Form of Legend for Global Note	  	D-1
	Exhibit E.	  	Form of Certificate To Be Delivered in Connection with Transfers to Non-QIB Accredited Investors	  	E-1
	Exhibit F.	  	Form of Certificate To Be Delivered in Connection with Transfers to Pursuant to Regulation S	  	D-1
	Exhibit G.	  	Form of Guarantee	  	G-1

  

 -iv- 

 INDENTURE, dated as of August 20, 2008, among GSI GROUP CORPORATION, a Michigan corporation, as
issuer (the “Issuer”), GSI Group Inc., a company continued and existing under the laws of the Province of New Brunswick, Canada and the owner of all outstanding shares of voting capital stock of the Issuer (the
“Parent”), Eagle Acquisition Corporation, a Delaware corporation (“EAC”), as a Guarantor (as hereinafter defined), and The Bank of New York Mellon Trust Company, N.A., as trustee (the “Trustee”).

 WHEREAS, the Issuer, the Parent and each Guarantor has duly authorized the execution and delivery of this Indenture to provide for the
issuance of the Notes (as hereinafter defined) to be issued as this Indenture provides; 
 WHEREAS, the Parent and the Guarantors have duly
authorized the full and unconditional guarantee of the Notes, and to provide the general terms and conditions of the Notes and the guarantee of same, the Parent and the Guarantors have duly authorized the execution and delivery of this Indenture;
and 
 WHEREAS, each of the Issuer, the Parent and the Guarantors jointly and severally represents that all acts and things necessary to make
the Notes, when executed by the Issuer and authenticated and delivered by the Trustee as in this Indenture provided, and issued, the valid, binding and legal obligation of the Issuer, will, at the time of such execution, authentication and delivery,
have been done and performed and the execution and delivery by the Issuer, the Parent and each Guarantor of this Indenture and the issue hereunder of the Notes have in all respects been duly authorized; and the Issuer, the Parent and each Guarantor,
in the exercise of legal right and power in it vested, is executing and delivering this Indenture and proposes to make, execute, issue, and deliver the Notes. 
 NOW, THEREFORE, THIS INDENTURE WITNESSETH: 
 Each party agrees as follows for the benefit of the other
parties and for the equal and ratable benefit of the Holders. 
 ARTICLE ONE 
 DEFINITIONS AND INCORPORATION BY REFERENCE 
 SECTION 1.01. Definitions. 
 “Acquired Indebtedness” means (1) with respect to any Person that becomes a Restricted Subsidiary after the Initial Issue Date,
Indebtedness of such Person and its Subsidiaries existing at the time such Person becomes a Restricted Subsidiary that was not incurred in connection with, or in contemplation of, such Person becoming a Restricted Subsidiary and (2) with
respect to the Parent, the Issuer or any Restricted Subsidiary, any Indebtedness of a Person (other than the Parent, the Issuer or a Restricted Subsidiary) existing at the time such Person is merged with or into the Issuer or a Restricted
Subsidiary, or Indebtedness expressly assumed by the Parent, the Issuer or any Restricted Subsidiary in connection with the acquisition of an asset or assets from another Person, which Indebtedness was not, in any case, incurred by such other Person
in connection with, or in contemplation of, such merger or acquisition; provided, however, that Indebtedness of such acquired Person which is redeemed or otherwise repaid at the time of or substantially contemporaneously with the
consummation of the transactions by which such acquired Person merges with or into or becomes a Restricted Subsidiary of such specified Person shall not be Acquired Indebtedness. 
  

 -1- 

 “Adjusted Net Assets” of the Parent or of a Guarantor at any date shall mean the lesser
of the amount by which (x) the fair value of the property of the Parent or such Guarantor exceeds the total amount of liabilities, including, without limitation, contingent liabilities (after giving effect to all other fixed and contingent
liabilities), but excluding liabilities under the Guarantee, of the Parent or such Guarantor at such date and (y) the present fair salable value of the assets of the Parent or such Guarantor at such date exceeds the amount that will be required
to pay the probable liability of the Parent or such Guarantor on its debts and all other fixed and contingent liabilities (after giving effect to all other fixed and contingent liabilities and after giving effect to any collection from any
Subsidiary of the Parent or such Guarantor in respect of the obligations of such Guarantor under the Guarantee), excluding Indebtedness in respect of the Guarantee, as they become absolute and matured. 
 “Affiliate” of any Person means any other Person which directly or indirectly controls or is controlled by, or is under direct or
indirect common control with, the referent Person. For purposes of Section 4.10, Affiliates shall be deemed to include, with respect to any Person, any other Person (1) which beneficially owns or holds, directly or indirectly, 10% or more
of any class of the Voting Stock of the referenced Person, (2) of which 10% or more of the Voting Stock is beneficially owned or held, directly or indirectly, by the referenced Person or (3) with respect to an individual, any
immediate family member of such Person. For purposes of this definition, “control” of a Person shall mean the power to direct the management and policies of such Person, directly or indirectly, whether through the ownership of
voting securities, by contract or otherwise. 
 “Agent” means any Registrar, Paying Agent or agent for service or notices
and demands. 
 “amend” means to amend, supplement, restate, amend and restate or otherwise modify, including successively,
and “amendment” shall have a correlative meaning. 
 “Annual Report” means an annual report on Form 10-K
filed with the Commission under the Exchange Act. 
 “Applicable Premium” means, with respect to any Note on any Redemption
Date, the greater of: 
 (1) 1.0% of the principal amount of the Note; or 
 (2) the excess of: (a) the present value at such Redemption Date of (i) the redemption price of the Note at August 20, 2009
plus (ii) all required interest payments due on the Note through August 20, 2009 (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) the principal amount of the Note. 
 “asset” means any asset or property.

 “Asset Acquisition” means: 
 (1) an Investment by the Parent or any Restricted Subsidiary (including the Issuer) in any other Person if, as a result of such Investment, such Person shall become a Restricted Subsidiary, or shall be merged with or
into the Parent or any Restricted Subsidiary (including the Issuer), or 
  

 -2- 

 (2) the acquisition by the Parent or any Restricted Subsidiary (including the Issuer) of
all or substantially all of the assets of any other Person or any division or line of business of any other Person. 
 “Asset
Sale” means any sale, issuance, conveyance, transfer, lease, assignment or other disposition by the Parent or any Restricted Subsidiary (including the Issuer) to any Person other than the Parent or any Restricted Subsidiary (including the
Issuer) (including by means of a Sale and Leaseback Transaction or a merger or consolidation) (collectively, for purposes of this definition, a “transfer”), in one transaction or a series of related transactions, of any assets of
the Parent or any of its Restricted Subsidiaries (including the Issuer), that (i) have a Fair Market Value in excess of $5.0 million, or (ii) for aggregate consideration in excess of $5.0 million, other than in the ordinary
course of business. For purposes of this definition, the term “Asset Sale” shall not include: 
 (1)
transfers of cash or Cash Equivalents or any Margin Stock; 
 (2) transfers of assets (including Equity Interests) that are
governed by and made in accordance with Section 5.01; 
 (3) Permitted Investments and Restricted Payments permitted
under Section 4.08; 
 (4) the creation of or realization on any Permitted Lien; 
 (5) transfers of damaged, worn-out or obsolete equipment or assets that, in the Parent’s or the Issuer’s reasonable judgment,
are no longer used or useful in the business of the Parent, the Issuer or its Restricted Subsidiaries; 
 (6) sales or grants
of licenses or sublicenses to use the patents, trade secrets, know-how and other intellectual property, and licenses, leases or subleases of other assets, of the Parent or any Restricted Subsidiary (including the Issuer) to the extent not materially
interfering with the business of Parent and the Restricted Subsidiaries; 
 (7) the surrender or waiver of contract rights or
the settlement, release or surrender of contract or tort claims; and 
 (8) any exchange of property with a substantially
equivalent Fair Market Value. 
 (9) sale of the Parent’s General Optics business made pursuant to agreements in effect
on the Initial Issue Date. 
 “Attributable Indebtedness,” when used with respect to any Sale and Leaseback Transaction,
means, as at the time of determination, the present value (discounted at the interest rate borne by the Notes, compounded semiannually) of the total obligations of the lessee for rental payments during the remaining term of the lease included in
such Sale and Leaseback Transaction (including any period for which such lease has been extended); provided, however, that if such Sale and Leaseback Transaction results in a Capitalized Lease Obligation, the amount of Indebtedness
represented thereby will be determined in accordance with the definition of “Capitalitalized Lease Obligation”. 
 “Auction
Rate Securities” means securities issued by State or local governments of the United States or political subdivisions thereof, the applicable interest rate on which is under normal circumstances subject to adjustments based on periodic
remarketing or other auction process (commonly referred to as auction rate securities). 
  

 -3- 

 “Bankruptcy Law” means Title 11 of the United States Code, as amended, or any
similar federal or state law for the relief of debtors. 
 “Board of Directors” means, with respect to any Person,
(i) in the case of any corporation, the Board of Directors of such Person (or any duly authorized committee thereof), (ii) in the case of any limited liability company, the board of managers of such Person (or any duly authorized committee
thereof), (iii) in the case of any partnership, the board of directors of the general partner of such Person and (iv) in any other case, the functional equivalent of the foregoing or, in each case, other than for purposes of the definition
of “Change of Control,” any duly authorized committee of such body. Notwithstanding anything to the contrary contained herein, for so long as the Parent is the sole stockholder of the Issuer, any determination to be made by the
Issuer may be made by the Parent. 
 “Board Resolution” means a copy of a resolution certified pursuant to an Officers’
Certificate to have been duly adopted by the Board of Directors of the Parent or the Issuer and to be in full force and effect, and delivered to the Trustee. 
 “Business Day” means a day other than a Saturday, Sunday or other day on which banking institutions in the City of New York are authorized or required by law to close. 
 “Capitalized Lease” means a lease required to be capitalized for financial reporting purposes in accordance with GAAP. 
 “Capitalized Lease Obligations” of any Person means the Obligations of such Person to pay rent or other amounts under a Capitalized
Lease, and the amount of such Obligations shall be the capitalized amount thereof determined in accordance with GAAP. 
 “Cash
Equivalents” means: 
 (1) marketable direct obligations issued or fully guaranteed or insured by the United States
of America or any agency or instrumentality thereof (provided that the full faith and credit of the United States of America is pledged in support thereof) maturing within 360 days of the date of acquisition thereof; 
 (2) demand and time deposits and certificates of deposit or acceptances, maturing within 360 days of the date of acquisition
thereof, of any financial institution that is a member of the Federal Reserve System having combined capital and surplus and undivided profits of not less than $500 million and is rated “A” (or such similar equivalent rating) or
higher by at least one nationally recognized statistical rating organization (as defined in Rule 436 under the Securities Act) or any money-market fund sponsored by a registered broker dealer or mutual fund distributor; 
 (3) commercial paper maturing no more than 270 days from the date of creation thereof issued by a corporation that is not the
Issuer or an Affiliate of the Issuer, and is organized under the laws of any State of the United States of America or the District of Columbia and rated at least A 1 by S&P or at least P 1 by Moody’s; 
 (4) repurchase obligations with a term of not more than ten days for underlying securities of the types described in clause (1) above
entered into with any commercial bank meeting the specifications of clause (2) above; 
  

 -4- 

 (5) marketable direct obligations issued by any state of the United States of America or
any political subdivision of any such state or any public instrumentality thereof maturing within 360 days from the date of acquisition thereof and, at the time of acquisition, having one of the two highest ratings obtainable from either
S&P or Moody’s; 
 (6) in the case of any Foreign Subsidiary that is a Restricted Subsidiary, such local currencies
held by them from time to time; and 
 (7) money market or other mutual funds substantially all of whose assets comprise
securities of the types described in clauses (1) through (5) above. 
 “Change of Control” means the occurrence of
any of the following events: 
 (1) any “person” or “group” (as such terms are used in Sections 13(d)
and 14(d) of the Exchange Act), is or becomes the beneficial owner (as defined in Rules 13d 3 and 13d 5 under the Exchange Act, except that for purposes of this clause that person or group shall be deemed to have
“beneficial ownership” of all securities that any such person or group has the right to acquire, whether such right is exercisable immediately or only after the passage of time), directly or indirectly, of Voting Stock
representing 50% or more of the voting power of the total outstanding Voting Stock of Parent; 
 (2) during any period of
two consecutive years, individuals who at the beginning of such period constituted the Board of Directors (together with or as replaced by any new directors whose election to such Board of Directors or whose nomination for election by the
stockholders of the Issuer was approved by a vote of the majority of the directors of the Issuer then still in office who were either directors at the beginning of such period or whose election or nomination for election was previously so approved)
cease for any reason to constitute a majority of the Board of Directors of the Issuer; 
 (3) (a) all or substantially all of
the assets of the Parent and the Restricted Subsidiaries (including the Issuer) are sold or otherwise transferred to any Person other than a Wholly-Owned Restricted Subsidiary or (b) the Parent or the Issuer consolidates or merges with or into
another Person or any Person consolidates or merges with or into the Parent, in either case under this clause (3), in one transaction or a series of related transactions in which immediately after the consummation thereof Persons beneficially
owning (as defined in Rules 13d-3 and 13d-5 under the Exchange Act), directly or indirectly, Voting Stock representing in the aggregate a majority of the total voting power of the Voting Stock of the Parent immediately prior to such
consummation do not beneficially own (as defined in Rules 13d-3 and 13d-5 under the Exchange Act), directly or indirectly, Voting Stock representing a majority of the total voting power of the Voting Stock of the Parent or the surviving or
transferee Person; 
 (4) the Parent ceases to own 100% of the Equity Interests of the Issuer; or 
 (5) the Parent or the Issuer shall adopt a plan of liquidation or dissolution or any such plan shall be approved by the stockholders of
the Parent or the Issuer. 
 For purposes of this definition, a Person shall not be deemed to have beneficial ownership of securities subject
to a stock purchase agreement, merger agreement or similar agreement until the consummation of the transactions contemplated by such agreement. 
  

 -5- 

 “Consolidated Amortization Expense” for any period means the amortization expense of the
Parent and the Restricted Subsidiaries (including the Issuer) for such period, determined on a consolidated basis in accordance with GAAP. 
 “Consolidated Cash Flow” for any period means, without duplication, the sum of the amounts for such period of: 
 (1) Consolidated Net Income; plus 
 (2) in each case only to the extent (and in the
same proportion) deducted in determining Consolidated Net Income and with respect to the portion of Consolidated Net Income attributable to any Restricted Subsidiary only if a corresponding amount would be permitted at the date of determination to
be distributed to the Parent by such Restricted Subsidiary without prior approval (that has not been obtained), pursuant to the terms of its charter and all agreements, instruments, judgments, decrees, orders, statutes, rules and governmental
regulations applicable to such Restricted Subsidiary or its stockholders, 
 (a) Consolidated Income Tax Expense; 

(b) Consolidated Amortization Expense (but only to the extent not included in Consolidated Interest Expense); 
 (c) Consolidated Depreciation Expense; 
 (d) Consolidated Interest Expense; 
 (e) all other non-cash items reducing Consolidated Net
Income (excluding any non-cash charge that results in an accrual of a reserve for cash charges in any future period) for such period; 
 (f) any reasonable expenses or charges relating to an equity offering, Permitted Investment, acquisition, disposition, recapitalization or the Incurrence of Indebtedness permitted to be Incurred by this Indenture
(including a refinancing) (whether or not successful), and in each case, deducted, and not added back, in computing Consolidated Net Income; and 
 (g) restructuring charges related to the integration of Target not to exceed $10.0 million to the extent not otherwise added back in computing Consolidated Net Income. 
 in each case determined on a consolidated basis in accordance with GAAP; minus 
 (3) the aggregate amount of all non-cash items, determined on a consolidated basis, to the extent such items increased Consolidated Net
Income for such period. 
 “Consolidated Depreciation Expense” for any period means the depreciation expense of the Parent
and the Restricted Subsidiaries (including the Issuer) for such period, determined on a consolidated basis in accordance with GAAP. 
  

 -6- 

 “Consolidated Income Tax Expense” for any period means the provision for taxes of the
Parent and the Restricted Subsidiaries (including the Issuer), determined on a consolidated basis in accordance with GAAP. 
 “Consolidated Interest Expense” for any period means the sum, without duplication, of the total interest expense of the Parent and the Restricted Subsidiaries (including the Issuer) for such period, determined on a
consolidated basis in accordance with GAAP and including, without duplication: 
 (1) imputed interest on Capitalized Lease
Obligations and Attributable Indebtedness, 
 (2) commissions, discounts and other fees and charges owed with respect to
letters of credit securing financial obligations, bankers’ acceptance financing and receivables financings, 
 (3) the
net costs associated with Hedging Obligations related to interest rates, 
 (4) amortization of debt discount or premium, and
debt issuance costs, including commitment fees, 
 (5) the interest portion of any deferred payment obligations, 

(6) capitalized interest, 
 (7) the product of (a) all dividend payments on any series of Disqualified Equity Interests of the Parent or any Preferred Stock of any Restricted Subsidiary (including the Issuer) (other than any such
Disqualified Equity Interests or any Preferred Stock held by the Issuer or a Wholly-Owned Restricted Subsidiary or to the extent paid in Qualified Equity Interests), multiplied by (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 the Parent and the Restricted Subsidiaries (including the Issuer), expressed as a decimal, 
 (8) all interest payable with respect to discontinued operations, 
 (9) all interest on any Indebtedness described in clause (7) or (8) of the definition of Indebtedness; 
 (10) non cash interest expense; and 
 (11) cash contributions to any employee stock ownership plan or trust to pay interest or fees to any Person (other than the Parent) in connection with Indebtedness Incurred by such plan or trust. 
 “Consolidated Leverage Ratio” means as of any date of determination the ratio of (i) the aggregate principal amount of the
Consolidated Total Debt of the Parent and the Restricted Subsidiaries (including the Issuer) on a consolidated basis as of the date of incurrence, to (ii) Consolidated Cash Flow of the Parent and the Restricted Subsidiaries (including the
Issuer) for the period of the most recent four consecutive fiscal quarters ending prior to the date of such determination and as to which financial statements are internally available; provided, however, that 
 (1) if since the beginning of such period the Parent or any of the Restricted Subsidiaries (including the Issuer) shall have made any
Asset Disposition, Consolidated Cash Flow for the Parent for such period shall, on a pro forma basis, be reduced by an amount equal to the Consolidated Cash Flow (if positive) attributable to the assets which are the subject of such Asset
Disposition for such period; 
  

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 (2) if since the beginning of such period the Parent or any of the Restricted
Subsidiaries (including the Issuer) (by merger or otherwise) shall have made an Asset Acquisition, Consolidated Cash Flow for the Issuer for such period shall be calculated after giving pro forma effect thereto (including the incurrence of any
Indebtedness) as if such Asset Acquisition occurred on the first day of such period; 
 (3) if since the beginning of such
period any Person that subsequently became a Restricted Subsidiary of the Parent or was merged with or into the Parent or any of the Restricted Subsidiaries (including the Issuer) since the beginning of such period shall have made any Asset
Disposition or Asset Acquisition that would have required an adjustment pursuant to clause (1) or (2) above if made by the Parent or any of the Restricted Subsidiaries (including the Issuer) during such period, Consolidated Cash Flow for
such period for the Parent shall be calculated after giving pro forma effect thereto as if such Asset Disposition or Asset Acquisition occurred on the first day of such period; and 
 (4) Consolidated Cash Flow and Consolidated Interest Expense for such period shall be calculated after giving effect on a pro forma basis
to any Indebtedness incurred since the beginning of such period that remains outstanding and to the Indebtedness giving rise to the need to calculate Consolidated Leverage Ratio (and after giving pro forma effect to the use of proceeds thereof) as
if all such Indebtedness had been incurred or repaid on the first day of such period. 
 For purposes of this definition, whenever pro forma
effect is to be given to an Asset Acquisition or Asset Disposition, including the amount of Consolidated Cash Flow relating thereto, the pro forma calculations shall be determined in accordance with GAAP and Regulation S-X under the Securities
Act. 
 “Consolidated Net Assets” means, as of any date, the total amount of assets of the Parent and the Restricted
Subsidiaries (including the Issuer) on a consolidated basis at the end of the fiscal quarter immediately preceding such date, less current liabilities, as determined in accordance with GAAP. 
 “Consolidated Net Income” for any period means the net income (or loss) of the Parent and its Restricted Subsidiaries (including the
Issuer) for such period determined on a consolidated basis in accordance with GAAP; provided that there shall be excluded from such net income (to the extent otherwise included therein), without duplication: 
 (1) the net income (or loss) of any Person that is not a Restricted Subsidiary, except to the extent that cash in an amount equal to any
such income has actually been received by the Parent or the Issuer or, subject to clause (3) below, any Restricted Subsidiary during such period; 
 (2) except to the extent includible in the consolidated net income of the Parent pursuant to the foregoing clause (1), the net income (or loss) of any Person that accrued prior to the date that (a) such
Person becomes a Restricted Subsidiary or is merged into or consolidated with the Parent, the Issuer or any Restricted Subsidiary or (b) the assets of such Person are acquired by the Parent, the Issuer or any Restricted Subsidiary; 

(3) the net income of any Restricted Subsidiary during such period to the extent that the declaration or payment of dividends or
similar distributions by such Restricted Subsidiary of that income is not permitted by operation of the terms of its charter or any agreement, instrument, judgment, decree, order, statute, rule or governmental regulation applicable to that
Subsidiary during such period, except that the Parent’s equity in a net loss of any such Restricted Subsidiary for such period shall be included in determining Consolidated Net Income; 
  

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 (4) unrealized gains and losses with respect to Hedging Obligations; 
 (5) the cumulative effect of any change in accounting principles; 
 (6) other than for purposes of calculating the Restricted Payments Basket, any extraordinary or non-recurring gain (or extraordinary or
non-recurring loss), together with any related provision for taxes on any such extraordinary or non-recurring gain (or the tax effect of any such extraordinary or non-recurring loss), realized by the Issuer or any Restricted Subsidiary during such
period; and 
 (7) non-cash compensation expense. 
 In addition, any return of capital with respect to an Investment that increased the Restricted Payments Basket pursuant to clause (3)(d) of the
first paragraph of Section 4.08 or decreased the amount of Investments outstanding pursuant to clause (11) of the definition of “Permitted Investments” shall be excluded from Consolidated Net Income for purposes of
calculating the Restricted Payments Basket. 
 For purposes of this definition of “Consolidated Net Income,”
“nonrecurring” means any gain or loss as of any date that is not reasonably likely to recur within the two years following such date; provided that if there was a gain or loss similar to such gain or loss within the two years
preceding such date, such gain or loss shall not be deemed nonrecurring. 
 “Consolidated Net Worth” means, with respect to
any Person as of any date, the consolidated stockholders’ equity of such Person, determined on a consolidated basis in accordance with GAAP, less (without duplication) (1) any amounts thereof attributable to Disqualified Equity Interests
of such Person or its Subsidiaries or any amount attributable to Unrestricted Subsidiaries and (2) all write-ups (other than write-ups resulting from foreign currency translations and write-ups of tangible assets of a going concern business
made within twelve months after the acquisition of such business) subsequent to the Initial Issue Date in the book value of any asset owned by such Person or a Subsidiary of such Person. 
 “Consolidated Total Debt” means at any date of determination the aggregate amount of all Indebtedness of the Parent or any of its
Restricted Subsidiaries then outstanding of the type specific in clauses (1),(2), (3), (4), (5), (6), (7), (8), (9) and (11) of the definition thereof to the extent shown or required by GAAP to be shown as a liability on a consolidated
balance sheet of the Parent and the Restricted Subsidiaries as of such date. 
 “Corporate Trust Office” means the principal
office of the Trustee at which at any time its corporate trust business shall be administered, which office at the date hereof is located at: The Bank of New York Mellon Trust Company, N.A., 222 Berkeley Street, 2nd Floor; Boston, MA 02116, Fax
617.351.2401, Attention: Corporate Trust Administration, or such other address as the Trustee may designate form time to time by notice to the Holders and the Issuer, or the principal corporate trust office of any successor Trustee (or such other
address as such successor Trustee may designate from time to time by notice to the Holders and the Issuer). 
  

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 “Credit Facilities” means one or more debt, commercial paper or credit facilities (which
may be outstanding at the same time) with commercial banks providing for revolving credit loans, term loans, notes, receivables financing or letters of credit and, in each case, as such agreements may be amended, refinanced, refunded, replaced or
otherwise restructured, in whole or in part from time to time (including extending the maturity of, increasing the amount of available borrowings under, extending the purpose to include acquisition, working capital and other facilities of, changing
the conditions and basis of borrowing of, combining the seniority of, changing the covenants and other provisions of, and adding Subsidiaries as additional borrowers or guarantors, or otherwise restructuring all or any portion of the Indebtedness
under such agreement or agreements or any successor or replacement agreement or agreements and whether with the same or any other agent, lender or group of lenders), including (i) any related notes, letters of credit, guarantees, collateral
documents, instruments and other agreements executed in connection therewith, and in each case as amended, modified, renewed, refunded, replaced or refinanced from time to time, and (ii) any notes, guarantees, collateral documents, instruments
and other agreements executed in connection with any such amendment, modification, renewal, refunding, replacement or refinancing. 
 “Custodian” means any receiver, trustee, assignee, liquidator or similar official under any Bankruptcy Law. 
 “Default” means (1) any Event of Default or (2) any event, act or condition that, after notice or the passage of time or both, would be an Event of Default. 
 “Default Rate” means, upon a declaration of acceleration in accordance with Section 6.02, an additional 2.0% over the interest
rate on the principal of and an increase of 2.0% per annum above the amount of all accrued and unpaid interest on the Notes. 
 “Depository” means, with respect to the Notes issued in the form of one or more Global Notes, The Depository Trust Company or another Person designated as Depository by the Issuer, which Person must be a clearing agency
registered under the Exchange Act. 
 “Designation” has the meaning given to this term in Section 4.15. 
 “Designation Amount” has the meaning given to this term in Section 4.15. 
 “Disqualified Equity Interests” of any Person means any class of Equity Interests of such Person that, by its terms, or by the terms of
any related agreement or of any security into which it is convertible, puttable or exchangeable, is, or upon the happening of any event or the passage of time would be, required to be redeemed by such Person, whether or not at the option of the
holder thereof, or matures or is mandatorily redeemable, pursuant to a sinking fund obligation or otherwise, in whole or in part, on or prior to the date which is 91 days after the final maturity date of the Notes; provided,
however, that any class of Equity Interests of such Person that, by its terms, authorizes such Person to satisfy in full its obligations with respect to the payment of dividends or upon maturity, redemption (pursuant to a sinking fund or
otherwise) or repurchase thereof or otherwise by the delivery of Equity Interests that are not Disqualified Equity Interests, and that is not convertible, puttable or exchangeable for Disqualified Equity Interests or Indebtedness, will not be deemed
to be Disqualified Equity Interests so long as such Person satisfies its obligations with respect thereto solely by the delivery of Equity Interests that are not Disqualified Equity Interests; provided, further, however, that any
Equity Interests that would not constitute Disqualified Equity Interests but for provisions thereof giving holders thereof (or the holders of any security into or for which such Equity Interests are convertible, exchangeable or exercisable) the
right to require the Issuer to redeem such Equity Interests upon the occurrence of a change in control or an asset sale occurring prior to the 91st day after the final maturity date of the Notes shall not constitute Disqualified Equity
Interests if the change of control or asset sale provisions applicable to such Equity Interests are no more favorable, taken as a whole, to such holders than the provisions of Sections 4.19 and 4.09, respectively, and such Equity Interests
specifically provide that the Issuer will not redeem any such Equity Interests pursuant to such provisions prior to the Issuer’s purchase of the Notes as required pursuant to the provisions of Sections 4.19 and 4.09, respectively.

  

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 “Equity Interests” of any Person means (1) any and all shares or other equity
interests (including common stock, preferred stock, limited liability company interests and partnership interests) in such Person and (2) all rights to purchase, warrants or options (whether or not currently exercisable), participations or
other equivalents of or interests in (however designated) such shares or other interests in such Person. 
 “Exchange Act”
means the U.S. Securities Exchange Act of 1934, as amended. 
 “Fair Market Value” means, with respect to any
asset, the price (after taking into account any liabilities relating to such asset) that would be negotiated in an arm’s-length transaction for cash between a willing seller and a willing and able buyer, neither of which is under any compulsion
to complete the transaction. Fair Market Value (other than of any asset with a public trading market) in excess of $12.5 million shall be determined by the Board of Directors of the Parent or the Issuer acting reasonably and in good faith and
shall be evidenced by a board resolution delivered to the Trustee. 
 “Foreign Subsidiary” means, with respect to any
Person, any Restricted Subsidiary of such Person that is not organized or existing under the laws of the United States, any state thereof, the District of Columbia or any territory thereof. 
 “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 may be approved by a significant segment of the accounting
profession of the United States, as in effect on the Initial Issue Date. 
 “guarantee” means a direct or indirect guarantee
by any Person of any Indebtedness of any other Person and includes any obligation, direct or indirect, contingent or otherwise, of such Person: (1) to purchase or pay (or advance or supply funds for the purchase or payment of) Indebtedness of
such other Person (whether arising by virtue of partnership arrangements, or by agreements to keep-well, to purchase assets, goods, securities or services (unless such purchase arrangements are on arm’s-length terms and are entered into in the
ordinary course of business), to take-or-pay, or to maintain financial statement conditions or otherwise); or (2) entered into for purposes of assuring in any other manner the obligee of such Indebtedness of the payment thereof or to protect
such obligee against loss in respect thereof (in whole or in part); “guarantee,” when used as a verb, and “guaranteed” have correlative meanings. 
 “Guarantors” means (i) each Restricted Subsidiary which is a Subsidiary of the Issuer (other than a Foreign Subsidiary) on the
Initial Issue Date, and (ii) each other Person that is required to, or at the election of the Issuer does, become a Guarantor by the terms of this Indenture after the Initial Issue Date, in each case, until such Person is released from its Note
Guarantee in accordance with the terms of this Indenture. Neither MicroE Systems International, Inc. nor MicroE Systems Corp. shall be required to be a Guarantor on the Initial Issue Date or thereafter, provided that such entities are dissolved,
liquidated or merged with and into another Restricted Subsidiary not later than December 31, 2008. Additionally, General Scanning Securities Corp. shall not be required to be a Guarantor on the Initial Issue Date or thereafter, provided that
such entity has assets of less than $2.5 million. 
  

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 “Hedging Obligations” of any Person means the obligations of such Person under swap,
cap, collar, forward purchase or similar agreements or arrangements dealing with interest rates, currency exchange rates, commodities or commodity prices, either generally or under specific contingencies. 
 “Heirs” means, with respect to any individual, such individual’s estate, spouse, lineal relatives (including adoptive descendants),
administrator, committee or other personal representative or other estate planning vehicle and any custodian or trustee for the benefit of any spouse or lineal relatives (including adoptive descendants) of such individual. 
 “Holder” means any registered holder, from time to time, of the Notes. 
 “Immaterial Subsidiary” means, any Subsidiary of the Parent that owns less than 2% of Consolidated Net Assets and generates less
than 2% of Consolidated Net Income. 
 “incur” means, with respect to any Indebtedness or Obligation, incur, create,
issue, assume, guarantee or otherwise become directly or indirectly liable, contingently or otherwise, with respect to such Indebtedness or Obligation; provided that (1) the Indebtedness of a Person existing at the time such Person
became a Restricted Subsidiary shall be deemed to have been incurred by such Restricted Subsidiary and (2) neither the accrual of interest nor the accretion of original issue discount or the accretion of principal or the payment of interest in
the form of additional Indebtedness or accumulation of dividends on any Equity Interests shall be deemed to be an incurrence of Indebtedness. 
 “Incurrence Leverage Ratio” has the meaning set forth in the proviso in the first paragraph of Section 4.06. 
 “Indebtedness” of any Person at any date means, without duplication: 
 (1) all liabilities,
contingent or otherwise, of such Person for borrowed money (whether or not the recourse of the lender is to the whole of the assets of such Person or only to a portion thereof); 
 (2) all obligations of such Person evidenced by bonds, debentures, notes or other similar instruments (other than letter of credit
obligations entered into in the ordinary course of business, to the extent such letter of credit are not drawn upon, or if and to the extent drawn upon, such drawing is reimbursed no later than the fifth Business Day following the receipt by such
Person of a demand or reimbursement following payment on the letter of credit); 
 (3) all reimbursement obligations of such
Person in respect of letters of credit, letters of guaranty, bankers’ acceptances and similar credit transactions (except to the extent such letter of credit or other transaction is not drawn upon, or if and to the extent drawn upon, such
drawing is reimbursed no later than the fifth Business Day following the receipt by such Person of a demand for reimbursement following payment on such letter of credit or other transaction, or extends to a trade payable and is satisfied no later
than the tenth Business Day after it is drawn upon); 
 (4) all obligations of such Person to pay the deferred and unpaid
purchase price of property or services, except trade payables and accrued expenses incurred by such Person in the ordinary course of business in connection with obtaining goods, materials or services, which purchase price is due more
than six months after the date of placing such property in service or taking delivery or title thereto; 
  

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 (5) the maximum fixed redemption or repurchase price of all Disqualified Equity Interests
of such Person; 
 (6) all Capitalized Lease Obligations of such Person; 
 (7) all Indebtedness of others secured by a Lien on any asset of such Person, whether or not such Indebtedness is assumed by such Person;

 (8) all Indebtedness of others guaranteed by such Person to the extent of such guarantee; provided that Indebtedness
of the Parent or its Subsidiaries that is guaranteed by the Parent or the Parent’s Subsidiaries shall only be counted once in the calculation of the amount of Indebtedness of the Parent and its Subsidiaries on a consolidated basis; 

(9) all Attributable Indebtedness; 
 (10) to the extent not otherwise included in this definition, Hedging Obligations of such Person; and 
 (11) all obligations of such Person under conditional sale or other title retention agreements relating to assets purchased by such Person. 
 The amount of any Indebtedness which is incurred at a discount to the principal amount at maturity thereof as of any date shall be deemed to have been
incurred at the accreted value thereof as of such date. The amount of Indebtedness of any Person at any date shall be the outstanding balance at such date of all unconditional obligations as described above, the maximum liability of such Person for
any such contingent obligations at such date and, in the case of clause (7), the lesser of (a) the Fair Market Value of any asset subject to a Lien securing the Indebtedness of others on the date that the Lien attaches and (b) the
amount of the Indebtedness secured. The principal amount of the Indebtedness under any Hedging Obligations at any time shall be equal to the amount payable as a result of the termination of the arrangement or agreement for such Hedging Obligations
at such time. For purposes of clause (5), the “maximum fixed redemption or repurchase price” of any Disqualified Equity Interests that do not have a fixed redemption or repurchase price shall be calculated in accordance with the terms
of such Disqualified Equity Interests as if such Disqualified Equity Interests were redeemed or repurchased on any date on which an amount of Indebtedness outstanding shall be required to be determined pursuant to this Indenture. 
 “Indenture” means this Indenture as amended, restated or supplemented from time to time. 
 “Independent Director” means a director of the Parent or the Issuer who is independent with respect to the transaction at issue.

 “Independent Financial Advisor” means an accounting, appraisal or investment banking firm of nationally recognized
standing that is, in the reasonable judgment of the Parent’s or the Issuer’s Board of Directors, qualified to perform the task for which it has been engaged and disinterested and independent with respect to the Issuer and its Affiliates.

 “Initial Issue Date” means August 20, 2008, the date on which the Initial Notes are originally issued. 

 

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 “Initial Notes” means $210,000,000 million aggregate principal amount of Notes issued
under this Indenture on the Initial Issue Date. 
 “Institutional Accredited Investor” means an institution that is an
“accredited investor” as that term is defined in Rule 501(a)(1), (2), (3) or (7) promulgated under the Securities Act. 
 “interest” means, with respect to the Notes, interest on the Notes. 
 “Interest Payment Dates”
means each February 15 and August 15, commencing February 15, 2009. 
 “Investments” of any Person means:

 (1) all direct or indirect investments by such Person in any other Person in the form of loans, advances or capital
contributions or other credit extensions constituting Indebtedness of such other Person, and any guarantee of Indebtedness of any other Person; 
 (2) all purchases (or other acquisitions for consideration) by such Person of Indebtedness, Equity Interests or other securities of any other Person (other than any such purchase that constitutes a Restricted Payment
of the type described in clause (2) of the definition thereof); 
 (3) all other items that would be classified as
investments on a balance sheet of such Person prepared in accordance with GAAP (including, if required by GAAP, purchases of assets outside the ordinary course of business); and 
 (4) the Designation of any Subsidiary as an Unrestricted Subsidiary. 
 Except as otherwise expressly specified in this definition, the amount of any Investment (other than an Investment made in cash) shall be the Fair Market Value thereof on the date such Investment is made. The amount
of Investment pursuant to clause (4) shall be the Designation Amount determined in accordance with Section 4.15. If the Issuer or any Restricted Subsidiary sells or otherwise disposes of any Equity Interests of any Restricted Subsidiary,
or any Restricted Subsidiary issues any Equity Interests, in either case, such that, after giving effect to any such sale or disposition, such Person is no longer a Subsidiary, the Issuer shall be deemed to have made an Investment on the date of any
such sale or other disposition equal to the Fair Market Value of the Equity Interests of and all other Investments in such Restricted Subsidiary retained. Notwithstanding the foregoing, purchases or redemptions of Equity Interests or Indebtedness of
the Parent shall be deemed not to be Investments. 
 “Issuer” means the party named as such in the first paragraph of this
Indenture until a successor replaces such party pursuant to Article Five and thereafter means the successor. 
 “Issuer
Request” means any written request signed in the name of the Issuer by the Chairman of the Board of Directors, any Vice Chairman, the Chief Executive Officer, the President, any Vice President, the Chief Financial Officer or the Treasurer
of the Issuer or the Parent and attested to by the Secretary or any Assistant Secretary of the Issuer. 
 “Lien” means, with
respect to any asset, any mortgage, deed of trust, lien (statutory or other), pledge, lease, easement, restriction, covenant, charge, security interest or other encumbrance of any kind or nature in respect of such asset, whether or not filed,
recorded or otherwise perfected under applicable law, including any conditional sale or other title retention agreement. 
  

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 “Margin Stock” means the shares of common stock, par value $0.001 per share of the
Target that are owned by the Parent or any Restricted Subsidiary; provided, however, that such shares shall cease to be Margin Stock when the securities no longer constitute “margin stock” pursuant to Regulation U of the
Federal Reserve Board. 
 “Moody’s” means Moody’s Investors Service, Inc. and its successors. 
 “Net Available Proceeds” means, with respect to any Asset Sale, the proceeds thereof in the form of cash or Cash Equivalents, net of

 (1) reasonable brokerage commissions and other reasonable fees and expenses (including reasonable fees, discounts and
expenses of legal counsel, accountants and investment banks, consultants and placement agents) of such Asset Sale; 
 (2)
provisions for taxes payable as a result of such Asset Sale (after taking into account any available tax credits or deductions and any tax sharing arrangements); 
 (3) amounts required to be paid to any Person (other than the Issuer or any Restricted Subsidiary and other than under a Credit Facility)
owning a beneficial interest in the assets subject to the Asset Sale or having a Lien thereon; 
 (4) the deduction of
appropriate amounts provided by the seller as a reserve, in accordance with GAAP, against any liabilities associated with the assets sold at the time of, or within 60 days after the date of, such Asset Sale; and 
 (5) appropriate amounts to be provided by the Issuer or any Restricted Subsidiary, as the case may be, as a reserve required in accordance
with GAAP against any adjustment in the sale price of such asset or assets or liabilities associated with such Asset Sale and retained by the Parent or any Restricted Subsidiary (including the Issuer), as the case may be, after such Asset Sale,
including pensions and other postemployment benefit liabilities, liabilities related to environmental matters and liabilities under any indemnification obligations associated with such Asset Sale; provided, however, that any amounts
remaining after adjustments, revaluations or liquidations of such reserves shall constitute Net Available Proceeds. 
 “Net
Indebtedness” means, at any date, the Consolidated Total Debt of the Parent and the Restricted Subsidiaries (including the Issuer) determined on a consolidated basis, less cash and Cash Equivalents of the Parent and the Restricted
Subsidiaries (including the Issuer) determined on a consolidated basis. 
 “Non-Recourse Debt” means Indebtedness of an
Unrestricted Subsidiary: 
 (1) as to which neither the Issuer nor any Restricted Subsidiary (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; 
 (2) no default with respect to which (including any rights that the holders thereof 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 any Credit Facility or the Notes) of the Issuer or any Restricted Subsidiary to declare a default on the other Indebtedness or
cause the payment thereof to be accelerated or payable prior to its stated maturity; and 
  

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 (3) as to which the lenders have been notified in writing that they will not have any
recourse to the Equity Interests or assets of the Issuer or any Restricted Subsidiary. 
 “Non-U.S. Person” means a
Person who is not a U.S. person, as defined in Regulation S. 
 “Note Guarantee” has the meaning given to this
term in Section 10.01. 
 “Notes” means the 11% Senior Notes due August 15, 2013 issued by the Issuer, treated as
a single class of securities, as amended from time to time in accordance with the terms hereof, that are issued pursuant to this Indenture. 
 “Obligation” means any principal, interest, penalties, fees, indemnification, reimbursements, costs, expenses, damages and other liabilities payable under the documentation governing any Indebtedness. 
 “Offer” has the meaning set forth in the definition of “Offer to Purchase.” 
 “Offer Expiration Date” has the meaning set forth in the definition of “Offer to Purchase.” 
 “Offer to Purchase” means a written offer (the “Offer”) sent by or on behalf of the Parent or the Issuer by first-class
mail, postage prepaid, to each Holder at its address appearing in the register for the Notes on the date of the Offer offering to purchase up to the principal amount of Notes specified in such Offer at the purchase price specified in such Offer (as
determined pursuant to this Indenture). Unless otherwise required by applicable law, the Offer shall specify an expiration date (the “Offer Expiration Date”) of the Offer to Purchase, which shall be not less than 30 days
nor more than 60 days after the date of such Offer, and a settlement date (the “Purchase Date”) for purchase of Notes to occur no later than three Business Days after the Offer Expiration Date. The Offer shall contain all
the information required by applicable law to be included therein. The Offer shall also contain information concerning the business of the Parent and its Subsidiaries which the Parent or the Issuer in good faith believes will enable such Holders to
make an informed decision with respect to the Offer to Purchase. The Offer shall contain all instructions and materials necessary to enable such Holders to tender Notes pursuant to the Offer to Purchase. The Offer shall also state: 
 (1) the Section of this Indenture pursuant to which the Offer to Purchase is being made; 
 (2) the Offer Expiration Date and the Purchase Date; 
 (3) the aggregate principal amount of the outstanding Notes offered to be purchased by the Parent or the Issuer pursuant to the Offer to
Purchase (including, if less than 100%, the manner by which such amount has been determined pursuant to the Section of this Indenture requiring the Offer to Purchase) (the “Purchase Amount”); 
 (4) the purchase price to be paid by the Parent or the Issuer for each $1,000 aggregate principal amount of Notes accepted for payment
(the “Purchase Price”); 
 (5) that the Holder may tender all or any portion of the Notes registered in the
name of such Holder and that any portion of a Note tendered must be tendered in minimum denominations of $2,000 and integral multiples of $1,000 principal amount; 
  

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 (6) the place or places where Notes are to be surrendered for tender pursuant to the
Offer to Purchase; 
 (7) that interest on any Note not tendered or tendered but not purchased by the Issuer pursuant to the
Offer to Purchase will continue to accrue; 
 (8) that on the Purchase Date the Purchase Price will become due and payable
upon each Note being accepted for payment pursuant to the Offer to Purchase and that interest thereon shall cease to accrue on and after the Purchase Date; 
 (9) that each Holder electing to tender all or any portion of a Note pursuant to the Offer to Purchase will be required to surrender such Note, with the form entitled “Option of Holder to Elect
Purchase” on the reverse of the Note completed, at the place or places specified in the Offer prior to the close of business on the Offer Expiration Date (such Note being, if the Issuer so requires, duly endorsed by, or accompanied by a
written instrument of transfer in form satisfactory to the Issuer duly executed by, the Holder thereof or its attorney duly authorized in writing); 
 (10) that Holders will be entitled to withdraw all or any portion of Notes tendered if the Issuer receives, not later than the close of business on the fifth Business Day preceding the Offer Expiration Date, a
telegram, telex, facsimile transmission or letter setting forth the name of the Holder, the principal amount of the Note the Holder tendered, the certificate number of the Note the Holder tendered and a statement that such Holder is withdrawing all
or a portion of its tender; 
 (11) that (a) if Notes in an aggregate principal amount less than or equal to the Purchase
Amount are duly tendered and not withdrawn pursuant to the Offer to Purchase, the Issuer shall purchase all such Notes and (b) if Notes in an aggregate principal amount in excess of the Purchase Amount are tendered and not withdrawn pursuant to
the Offer to Purchase, the Issuer shall purchase Notes having an aggregate principal amount equal to the Purchase Amount on a pro rata basis (with such adjustments as may be deemed appropriate so that only Notes in an aggregate principal
amount of $2,000 or greater and integral multiples of $1,000 shall be purchased); and 
 (12) that in the case of any Holder
whose Note is purchased only in part, the Issuer shall execute and deliver to the Holder of such Note without service charge, a new Note or Notes, of any authorized denomination as requested by such Holder, in an aggregate principal amount equal to
and in exchange for the unpurchased portion of the Note so tendered. 
 An Offer to Purchase shall be governed by and effected in accordance
with the provisions above pertaining to any Offer. 
 On or before the Purchase Date, the Issuer shall (i) accept for payment Notes or
portions thereof tendered and not withdrawn pursuant to the Offer, (ii) deposit with the Trustee U.S. Dollars sufficient to pay the Purchase Price, plus accrued interest, if any, of all Notes to be purchased through and including the
Purchase Date and (iii) deliver to the Trustee Notes so accepted together with an Officers’ Certificate stating the Notes or portions thereof being purchased by the Issuer. The Trustee shall promptly mail to the Holders of Notes so
accepted payment in an amount equal to the Purchase Price, plus accrued interest, if any, thereon. 
  

 -17- 

 “Officer” means any of the following of the Parent or the Issuer: the Chairman of the
Board of Directors, the Chief Executive Officer, the Chief Financial Officer, the President, any Vice President, the Treasurer or the Secretary. 
 “Officers’ Certificate” means a certificate signed on behalf of a Person by two Officers of such Person. 
 “Opinion of Counsel” means a written opinion reasonably satisfactory in form and substance to the Trustee from legal counsel, which counsel is reasonably acceptable to the Trustee, stating the matters required by
Section 11.05 and delivered to the Trustee. 
 “Parent” has the meaning set forth in the introductory paragraph to this
Agreement. 
 “Pari Passu Indebtedness” means any Indebtedness of the Parent, the Issuer or any Guarantor that ranks pari
passu in right of payment with the Notes or the Note Guarantees, as applicable (without giving effect to any security interest). 
 “Permitted Business” means the businesses engaged in by the Parent and its Subsidiaries on the Initial Issue Date and businesses that are reasonably related thereto or reasonable extensions thereof. 
 “Permitted Investments” means (each of which shall be given independent effect in whole or in part): 
 (1) (i) Investments by the Parent or any Restricted Subsidiary (including the Issuer) in (a) the Parent or any Restricted Subsidiary
(including the Issuer), or (b) any Person that will become immediately after such Investment a Restricted Subsidiary or that will merge or consolidate into the Issuer or any Restricted Subsidiary; 
 (2) Investments in the Parent by any Restricted Subsidiary (including the Issuer); 
 (3) loans and advances to directors, employees and officers of the Parent and the Restricted Subsidiaries for bona fide business
purposes and to purchase Equity Interests of the Parent not in excess of $10.0 million at any one time outstanding; 
 (4) Hedging Obligations entered into for bona fide hedging purposes of the Parent, the Issuer or any Restricted Subsidiary not for the purpose of speculation; 
 (5) cash and Cash Equivalents; 
 (6) accounts and notes receivables owing to the Parent, the Issuer or any Restricted Subsidiary if created or acquired in the ordinary course of business and payable or dischargeable in accordance with customary trade
terms; provided, however, that such trade terms may include such concessionary trade terms as the Issuer or any such Restricted Subsidiary deems reasonable under the circumstances; 
 (7) Investments in securities of trade creditors or customers received pursuant to any plan of reorganization or similar arrangement upon
the bankruptcy or insolvency of such trade creditors or customers or any exchange of such investment with the issuer thereof or taken in settlement of or other resolution of claims or disputes; 
  

 -18- 

 (8) Investments received in connection with an Asset Sale that was made in compliance
with Section 4.09; 
 (9) lease, utility and other similar deposits in the ordinary course of business; 
 (10) stock, obligations or securities received in settlement of debts created in the ordinary course of business and owing to the Parent,
the Issuer or any Restricted Subsidiary or in satisfaction of judgments; 
 (11) other Investments made after the Initial
Issue Date in an aggregate amount not to exceed the greater of $15.0 million or 3.5% of the Consolidated Net Assets at any one time outstanding (with each Investment being valued as of the date made and without regard to subsequent changes
in value); provided that no Investment made in reliance on this clause (11) shall be made in any Person that is the direct or indirect holder of more than 25% of the outstanding Equity Interests of the Parent; 
 (12) Investments of the Parent, the Issuer and the Restricted Subsidiaries to the extent outstanding on the Initial Issue Date;

 (13) Payroll, travel and similar advances to cover matters that are expected at the time of such advance ultimately to be
treated as an expense; and 
 (14) any assets, capital stock or other securities to the extent acquired for capital stock,
other than Disqualified Equity Interests. 
 The amount of Investments outstanding at any time pursuant to clause (11) above shall be
deemed to be reduced: 
 (a) upon the disposition or repayment of or return on any Investment made pursuant to
clause (11), by an amount equal to the return of capital with respect to such Investment to the Issuer or any Restricted Subsidiary (to the extent not included in the computation of Consolidated Net Income); and 
 (b) upon a Redesignation of an Unrestricted Subsidiary as a Restricted Subsidiary, by an amount equal to the lesser of (x) the Fair
Market Value of the Issuer’s proportionate interest in such Subsidiary immediately following such Redesignation, and (y) the aggregate amount of Investments in such Subsidiary that increased (and did not previously decrease) the amount of
Investments outstanding pursuant to clause (11). 
 “Permitted Liens” means the following types of Liens: 

(1) Liens for taxes, assessments or governmental charges or claims either (a) not delinquent or (b) contested in good faith
by appropriate proceedings and as to which the Parent, the Issuer or the Restricted Subsidiaries shall have set aside on its books such reserves as may be required pursuant to GAAP; 
 (2) Liens of landlords, carriers, warehousemen, mechanics, suppliers, materialmen, repairmen and other Liens imposed by law incurred in
the ordinary course of business for sums not yet delinquent or being contested in good faith, if such reserve or other appropriate provision, if any, as shall be required by GAAP shall have been made in respect thereof and rights to offset and
set-off; 
  

 -19- 

 (3) Liens incurred or deposits made in connection with workers’ compensation,
unemployment insurance and other types of social security, or to secure the performance of tenders, statutory or regulatory obligations, surety and appeal bonds, bids, leases, government contracts, performance and return-of-money bonds and other
similar obligations (exclusive of obligations for the payment of borrowed money), in each case incurred in the ordinary course of business; 
 (4) Liens upon specific items of inventory or other goods and proceeds of any Person securing such Person’s obligations in respect of bankers’ acceptances issued or created for the account of such Person to
facilitate the purchase, shipment or storage of such inventory or other goods, incurred in the ordinary course of business; 
 (5) judgment Liens not giving rise to an Event of Default so long as such Liens are adequately bonded and any appropriate legal proceedings which may have been duly initiated for the review of such judgment have not been finally terminated
or the period within which the proceedings may be initiated has not expired; 
 (6) easements, rights-of-way, zoning
restrictions, title irregularities and other similar charges, restrictions or encumbrances in respect of real property which do not, in the aggregate, impair in any material respect the ordinary conduct of the business of the Parent, the Issuer and
the Restricted Subsidiaries taken as a whole; 
 (7) Liens securing reimbursement obligations with respect to commercial
letters of credit which encumber documents and other assets relating to such letters of credit and products and proceeds thereof; 
 (8) Liens encumbering deposits made to secure obligations arising from contractual or warranty requirements of the Parent, the Issuer or any Restricted Subsidiary, including rights of offset and set-off; 
 (9) lenders’ Liens, rights of set-off and other similar Liens existing solely with respect to cash and Cash Equivalents on deposit in
one or more of accounts maintained by the Parent, the Issuer or any Restricted Subsidiary, in each case granted in the ordinary course of business in favor of the lender or lenders with which such accounts are maintained, securing amounts owing to
such lender with respect to cash management and operating account arrangements, including those involving pooled accounts and netting arrangements; provided that in no case shall any such Liens secure (either directly or indirectly) the
repayment of any Indebtedness; 
 (10) leases or subleases, and licenses or sublicenses, granted to others that do not
materially interfere with the ordinary course of business of the Parent, the Issuer or any Restricted Subsidiary; 
 (11)
Liens arising from filing Uniform Commercial Code financing statements regarding operating leases; 
 (12) Liens securing
all of the Notes and Liens securing any Note Guarantee; 
 (13) Liens in favor of lenders under any Credit Facility secured
pursuant to clause (16) below securing Hedging Obligations entered into for bona fide hedging purposes of the Issuer or any Restricted Subsidiary not for the purpose of speculation; 
 (14) Liens existing on the Initial Issue Date; 
  

 -20- 

 (15) Liens in favor of the Issuer or a Guarantor; 
 (16) Liens securing Indebtedness under any Credit Facility incurred pursuant to clause (1) of Section 4.06; provided that
such liens are only secured by the Parent’s, the Issuer’s and/or any Restricted Subsidiary’s inventory, accounts receivable, and general intangibles, support obligations, documents, and books and records relating thereto; 

(17) [Intentionally left blank]; 
 (18) Liens securing Acquired Indebtedness permitted to be incurred under this Indenture; provided that the Liens do not extend to assets not subject to such Lien at the time of acquisition (other than
improvements thereon and substitutions and replacements thereto) and are no more favorable to the lienholders than those securing such Acquired Indebtedness prior to the incurrence of such Acquired Indebtedness by the Parent, the Issuer or a
Restricted Subsidiary; 
 (19) Liens on assets of a Person existing at the time such Person is acquired or merged with or into
or consolidated with the Parent, the Issuer or any such Restricted Subsidiary (and not created in anticipation or contemplation thereof); provided that the Liens do not extend to assets not subject to such Lien at the time of such
acquisition, merger or consolidation (other than improvements thereon and substitutions and replacements thereto) and are no more favorable to the lienholders than those in effect prior to such acquisition, merger or consolidation with the Parent,
the Issuer or any such Restricted Subsidiary; 
 (20) Liens to secure Refinancing Indebtedness of Indebtedness secured by
Liens referred to in the foregoing clauses (12), (14), (18) and (19); provided that in the case of Liens securing Refinancing Indebtedness of Indebtedness secured by Liens referred to in the foregoing clauses (14),
(18) and (19), such Liens do not extend to any additional assets (other than improvements thereon and replacements thereof); 
 (21) Liens in favor of customs and revenue authorities arising as a matter of law to secure payment of customs duties in connection with the importation of goods; 
 (22) Liens securing Indebtedness incurred pursuant to clause (4), (7) and (12) of Section 4.06, provided that, in the
case of (12), such liens shall attach only to the related Auction Rate Securities; and 
 (23) Liens arising in connection
with the placement by the Parent, Issuer or any Restricted Subsidiary of a reasonable amount of cash (as determined in good faith by the Parent’s or the Issuer’s Board of Directors) in escrow against any obligations permitted pursuant to
clause (11) of Section 4.06 (other than with respect to obligations incurred or assumed in connection with the acquisition, disposition, issuance or redemption of Equity Interests of the Parent); and 
 (24) Liens with respect to Margin Stock. 
 “Person” means any individual, corporation, partnership, limited liability company, joint venture, incorporated or unincorporated association, joint-stock company, trust, unincorporated organization
or government or other agency or political subdivision thereof or other entity of any kind. 
 “Physical Notes” means
certificated Notes in registered form in substantially the form set forth in Exhibit A. 
  

 -21- 

 “Plan of Liquidation” with respect to any Person, means a plan that provides for,
contemplates or the effectuation of which is preceded or accompanied by (whether or not substantially contemporaneously, in phases or otherwise): (1) the sale, lease, conveyance or other disposition of all or substantially all of the assets of
such Person otherwise than as an entirety or substantially as an entirety; and (2) the distribution of all or substantially all of the proceeds of such sale, lease, conveyance or other disposition of all or substantially all of the remaining
assets of such Person to holders of Equity Interests of such Person. 
 “Preferred Stock” means, with respect to any Person,
any and all preferred or preference stock or other equity interests (however designated) of such Person whether now outstanding or issued after the Initial Issue Date. 
 “principal” means, with respect to the Notes, the principal of, and premium, if any, on the Notes. 
 “Private Placement Legend” means the legend initially set forth on the Rule 144A Notes and Other Notes that are Restricted Notes in the form set forth in Exhibit B. 
 “Purchase Agreement” means the Agreement and Plan of Merger made and entered into as of July 9, 2008, by and among the Parent,
EAGLE ACQUISITION CORPORATION, a Delaware corporation and wholly owned subsidiary of the Issuer, and the Target. 
 “Purchase
Amount” has the meaning set forth in the definition of “Offer to Purchase.” 
 “Purchase Date” has
the meaning set forth in the definition of “Offer to Purchase.” 
 “Purchase Money Indebtedness” means
Indebtedness, including Capitalized Lease Obligations, of the Parent, the Issuer or any Restricted Subsidiary incurred for the purpose of financing all or any part of the purchase price or improvement of property, plant or equipment purchased,
constructed or improved at any time after the Initial Issue Date and used in the business of the Parent, the Issuer or any Restricted Subsidiary or the cost of installation, construction or improvement thereof and fees and other obligations incurred
in connection therewith, as amended or otherwise restructured (other than pursuant to a refinancing); provided, however, that (1) the amount of such Indebtedness shall not exceed such purchase price or cost and (2) such Indebtedness
shall be incurred within 90 days after such acquisition of such asset by the Parent, the Issuer or such Restricted Subsidiary or such installation, construction or improvement. 
 “Purchase Price” has the meaning set forth in the definition of “Offer to Purchase.” 
 “Qualified Equity Interests” of any Person means Equity Interests of such Person other than Disqualified Equity Interests;
provided that such Equity Interests shall not be deemed Qualified Equity Interests to the extent sold or owed to a Subsidiary of such Person or financed, directly or indirectly, using funds (1) borrowed from such Person or any Subsidiary
of such Person until and to the extent such borrowing is repaid or (2) contributed, extended, guaranteed or advanced by such Person or any Subsidiary of such Person (including, without limitation, in respect of any employee stock ownership or
benefit plan). Unless otherwise specified, Qualified Equity Interests refer to Qualified Equity Interests of the Parent. 
 “Qualified Institutional Buyer” or “QIB” shall have the meaning specified in Rule 144A promulgated under the Securities Act. 
  

 -22- 

 “Quarterly Report” means a quarterly report on Form 10-Q filed with the Commission under
the Exchange Act. 
 “redeem” means to redeem, repurchase, purchase, defease (including a covenant defeasance), retire,
discharge or otherwise acquire or retire for value; and “redemption” shall have a correlative meaning; provided that this definition shall not apply for purposes of Section 3.01. 
 “Redemption Date” when used with respect to any Note to be redeemed means the date fixed for such redemption pursuant to the terms of
the Notes. 
 “Redemption Price” means the price equal to 100% of the principal amount of the Notes to be redeemed, plus
accrued and unpaid interest thereon, if any, to, but not including, the Redemption Date. 
 “refinance” means to refinance,
repay, prepay, replace, renew or refund. 
 “Refinancing Indebtedness” means Indebtedness of the Parent, the Issuer or a
Restricted Subsidiary incurred in exchange for, or the proceeds of which are used to redeem or refinance in whole or in part, any Indebtedness of the Parent, the Issuer or any Restricted Subsidiary (the
“Refinanced Indebtedness”); provided that: 
 (1) the principal amount (and accreted value, in
the case of Indebtedness issued at a discount) of the Refinancing Indebtedness does not exceed the principal amount (and accreted value, as the case may be) of the Refinanced Indebtedness plus the amount of accrued and unpaid interest on the
Refinanced Indebtedness, any premium paid to the holders of the Refinanced Indebtedness and expenses incurred or to be paid in connection with the incurrence of the Refinancing Indebtedness; 
 (2) the obligor of Refinancing Indebtedness does not include any Person (other than the Parent, the Issuer or any Restricted Subsidiary)
that is not an obligor of the Refinanced Indebtedness; 
 (3) if the Refinanced Indebtedness was subordinated in right of
payment to the Notes or the Note Guarantees, as the case may be, then such Refinancing Indebtedness, by its terms, is subordinate in right of payment to the Notes or the Note Guarantees, as the case may be, at least to the same extent as the
Refinanced Indebtedness; 
 (4) the Refinancing Indebtedness has a final stated maturity either (a) no earlier than the
Refinanced Indebtedness being repaid or amended or (b) 121 days after the maturity date of the Notes; and 
 (5) the
portion, if any, of the Refinancing Indebtedness that is scheduled to mature on or prior to the maturity date of the Notes has a Weighted Average Life to Maturity at the time such Refinancing Indebtedness is incurred that is equal to or greater than
the Weighted Average Life to Maturity of the portion of the Refinanced Indebtedness being repaid that is scheduled to mature on or prior to the maturity date of the Notes. 
 “Regulation S” means Regulation S promulgated under the Securities Act. 
  

 -23- 

 “Responsible Officer” when used with respect to the Trustee, means an officer or
assistant officer assigned to 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 knowledge of and familiarity with the particular subject. 
 “Restricted Note” has the same meaning as “Restricted Security” set forth in Rule 144(a)(3) promulgated under the Securities Act; provided that the Trustee shall be entitled to request and
conclusively rely upon an Opinion of Counsel with respect to whether any Note is a Restricted Note. 
 “Restricted Payment”
means any of the following: 
 (1) the declaration or payment of any dividend or any other distribution on Equity Interests of
the Parent or any Restricted Subsidiary (including the Issuer) or any payment made to the direct or indirect holders (in their capacities as such) of Equity Interests of the Parent or any Restricted Subsidiary (including the Issuer), including,
without limitation, any payment in connection with any merger or consolidation involving the Issuer but excluding (a) dividends or distributions payable solely in Qualified Equity Interests or through accretion or accumulation of such dividends
on such Equity Interests and (b) in the case of Restricted Subsidiaries (including the Issuer), dividends or distributions payable to the Parent or to a Restricted Subsidiary (including the Issuer) and pro rata dividends or distributions
payable to minority stockholders of any Restricted Subsidiary (including the Issuer); 
 (2) the redemption of any Equity
Interests of the Parent or any Restricted Subsidiary (including the Issuer), including, without limitation, any payment in connection with any merger or consolidation involving the Parent but excluding any such Equity Interests held by the Parent or
any Restricted Subsidiary (including the Issuer); 
 (3) any Investment other than a Permitted Investment; or 
 (4) any payment or redemption prior to the scheduled maturity or prior to any scheduled repayment of principal or sinking fund payment, as
the case may be, in respect of Subordinated Indebtedness (other than any Subordinated Indebtedness owed to and held by the Parent, the Issuer or any Restricted Subsidiary). 
 “Restricted Subsidiary” means any Subsidiary of the Parent (including the Issuer) other than an Unrestricted Subsidiary. 
 “Rule 144” means Rule 144 promulgated under the Securities Act. 
 “Rule 144A” means Rule 144A promulgated under the Securities Act. 
 “S&P” means Standard & Poor’s Ratings Services, a division of the McGraw-Hill Companies, Inc., and its successors.

 “Sale and Leaseback Transactions” means, with respect to any Person, an arrangement with any bank, insurance company or
other lender or investor or to which such lender or investor is a party, providing for the leasing by such Person of any asset of such Person which has been or is being sold or transferred by such Person to such lender or investor or to any Person
to whom funds have been or are to be advanced by such lender or investor on the security of such asset. 
 “SEC” means the
U.S. Securities and Exchange Commission. 
  

 -24- 

 “Secretary’s Certificate” means a certificate signed by the Secretary of the Parent
or the Issuer. 
 “Securities Act” means the U.S. Securities Act of 1933, as amended. 
 “Significant Subsidiary” means any Restricted Subsidiary that would be a “significant subsidiary” of the Parent as defined in
Regulation S-X promulgated pursuant to the Securities Act as such Regulation is in effect on the Initial Issue Date. 
 “Subordinated Indebtedness” means Indebtedness of the Parent, the Issuer or any Restricted Subsidiary that is expressly subordinated in right of payment to the Notes or the Note Guarantees, respectively. 
 “Subsidiary” means, with respect to any Person: 
 (1) any corporation, limited liability company, association or other business entity of which more than 50% of the total voting power
of the Equity Interests entitled (without regard to the occurrence of any contingency) to vote in the election of the Board of Directors thereof is at the time owned or controlled, directly or indirectly, by such Person or one or more of the other
Subsidiaries of such Person (or a combination thereof); and 
 (2) 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). 
 Unless otherwise specified, “Subsidiary” refers to a Subsidiary of the Issuer. 
 “Target” means Excel Technology, Inc. 
 “Tax” (and, with correlative meaning, “Taxes”) means all taxes, charges, fees, levies or other similar assessments or liabilities, including without limitation income, gross receipts,
ad valorem, premium, value-added, excise, real property, personal property, sales, use, services, withholding, employment, payroll and franchise taxes imposed by the United States or any state, local or foreign government, or any agency thereof, or
other political subdivision of the Unites States or any such government, and any interest, fines, penalties, assessments or additions to tax resulting from, attributable to, or incurred in connection with any Tax or any contest or dispute thereof.

 “Trigger Event” has the meaning given to this term in Section 4.20. 
 “Trigger Event Measuring Period” has the meaning given to this term in Section 4.20. 
 “Trigger Event Offer Date” has the meaning given to this term in Section 4.20. 
 “Trigger Event Payment Date” has the meaning given to this term in Section 4.20. 
 “Trust Indenture Act” or “TIA” means the Trust Indenture Act of 1939, as amended. 
 “Trustee” means the party named as such in this Indenture until a successor replaces it pursuant to this Indenture and thereafter means
the successor. 
  

 -25- 

 “Unrestricted Subsidiary” means (1) any Subsidiary that at the time of
determination shall be designated an Unrestricted Subsidiary by the Board of Directors of the Parent or the Issuer in accordance with Section 4.15 and (2) any Subsidiary of an Unrestricted Subsidiary. 
 “U.S. Government Obligations” means direct non-callable obligations of, or guaranteed by, the United States of America for the
payment of which guarantee or obligations the full faith and credit of the United States are pledged. 
 “Voting Stock,”
with respect to any Person, means securities of any class of Equity Interests of such Person entitling the holders thereof (whether at all times or only so long as no senior class of stock or other relevant equity interest has voting power by reason
of any contingency) to vote in the election of members of the Board of Directors of such Person. 
 “Weighted Average Life to
Maturity,” when applied to any Indebtedness at any date, means the number of years obtained by dividing (1) the sum of the products obtained by multiplying (a) the amount of each then remaining installment, sinking fund, serial
maturity or other required payment of principal, including payment at final maturity (but not including any redemption offer upon an asset sale, change of control or other similar obligation), in respect thereof 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 (2) the then outstanding principal amount of such Indebtedness. 
 “Wholly-Owned Restricted Subsidiary” means a Restricted Subsidiary of which 100% of the Equity Interests (except for
directors’ qualifying shares or certain minority interests owned by other Persons solely due to local law requirements that there be more than one stockholder, but which interest is not in excess of what is required for such purpose) are owned
directly by the Issuer or through one or more Wholly-Owned Restricted Subsidiaries. 
 SECTION 1.02. Other Definitions. 
 The definitions of the following terms may be found in the sections indicated as follows: 
  

			
	 Term
	  	Defined in Section
	 “Affiliate Transaction”
	  	4.10
	 “Agent Members”
	  	2.16(a)
	 “Business Day”
	  	11.07
	 “Change of Control Date”
	  	4.19
	 “Change of Control Offer”
	  	4.19
	 “Change of Control Payment Date”
	  	4.19
	 “Change of Control Purchase Price”
	  	4.19
	 “Covenant Defeasance”
	  	9.03
	 “Designation”
	  	4.15
	 “Designation Amount”
	  	4.15
	 “Event of Default”
	  	6.01
	 “Excess Proceeds”
	  	4.09
	 “Global Notes”
	  	2.16(a)
	 “Legal Defeasance”
	  	9.02
	 “Legal Holiday”
	  	11.07
	 “Incurrence Leverage Ratio”
	  	4.06
	 “Note Guarantee”
	  	10.01
	 “Other Notes”
	  	2.02
	 “Paying Agent”
	  	2.04

  

 -26- 

			
	 Term
	  	Defined in Section
	 “Permitted Indebtedness”
	  	4.06
	 “Redesignation”
	  	4.15
	 “Registrar”
	  	2.04
	 “Regulation S Global Note”
	  	2.16(a)
	 “Regulation S Notes”
	  	2.02
	 “Restricted Global Note”
	  	2.16(a)
	 “Restricted Payments Basket”
	  	4.08
	 “Restricted Period”
	  	2.16(f)
	 “Rule 144A Notes”
	  	2.02

 SECTION 1.03. Incorporation by Reference of Trust Indenture Act. 
 Whenever this Indenture refers to a provision of the TIA, the portion of such provision required to be incorporated herein in order for this Indenture to
be qualified under the TIA is incorporated by reference in and made a part of this Indenture. The following TIA terms used in this Indenture have the following meanings: 
 “indenture securities” means the Notes. 
 “indenture securityholder” means
a Holder or Noteholder. 
 “indenture to be qualified” means this Indenture. 
 “indenture trustee” or “institutional trustee” means the Trustee. 
 “obligor on the indenture securities” means the Issuer, the Guarantors or any other obligor on the Notes. 
 All other terms used in this Indenture that are defined bAQQy the TIA, defined in the TIA by reference to another statute or defined by SEC rule have the
meanings therein assigned to them. 
 SECTION 1.04. Rules of Construction. 
 Unless the context otherwise requires: 
 (1) a term has the meaning assigned to it herein, whether defined expressly or by reference; 
 (2) “or” is not exclusive; 
 (3) words in the singular include the plural, and in the plural include the
singular; 
 (4) words used herein implying any gender shall apply to both genders; 
 (5) “herein,” “hereof” and other words of similar import refer to this Indenture as a whole and not to any particular
Article, Section or Subsection; 
  

 -27- 

 (6) unless otherwise specified herein, all accounting terms used herein shall be
interpreted, all accounting determinations hereunder shall be made, and all financial statements required to be delivered hereunder shall be prepared in accordance with GAAP as in effect from time to time, applied on a basis consistent with the most
recent audited consolidated financial statements of the Issuer; and 
 (7) “$,” “U.S. Dollars” and
“United States Dollars” each refer to United States dollars, or such other money of the United States that at the time of payment is legal tender for payment of public and private debts. 
 ARTICLE TWO 
 THE NOTES 
 SECTION 2.01. Amount of Notes. 
 The Trustee shall
authenticate Initial Notes for original issue on the Initial Issue Date in the aggregate principal amount not to exceed $210,000,000. The Officers’ Certificate shall specify the amount of Notes to be authenticated, the date on which the Notes
are to be authenticated, and the names and delivery instructions for each Holder of the Notes. 
 Upon receipt of a written order of the
Issuer in the form of an Officers’ Certificate, the Trustee shall authenticate Notes in substitution for Notes originally issued to reflect any name change of the Issuer. 
 SECTION 2.02. Form and Dating. 
 The Notes and the Trustee’s certificate of authentication with
respect thereto shall be substantially in the form set forth in Exhibit A, which is incorporated in and forms a part of this Indenture. The Notes may have notations, legends or endorsements required by law, rule or usage to which the
Issuer is subject. Without limiting the generality of the foregoing, Notes offered and sold to Qualified Institutional Buyers in reliance on Rule 144A (“Rule 144A Notes”) shall bear the legend and include the form of
assignment set forth in Exhibit B, Notes offered and sold in offshore transactions in reliance on Regulation S (“Regulation S Notes”) shall bear the legend and include the form of assignment set forth in
Exhibit C, and Notes offered and sold to Institutional Accredited Investors in transactions exempt from registration under the Securities Act not made in reliance on Rule 144A or Regulation S (“Other Notes”)
may be represented by a Restricted Global Note or, if such an investor may not hold an interest in the Restricted Global Note, a Physical Note, in each case, bearing the Private Placement Legend. Each Note shall be dated the date of its
authentication. 
 The terms and provisions contained in the Notes shall constitute, and are expressly made, a part of this Indenture and, to
the extent applicable, the Issuer, the Guarantors and the Trustee, by their execution and delivery of this Indenture, expressly agree to such terms and provisions and agree to be bound thereby. 
 The Notes may be presented for registration of transfer and exchange at the offices of the Registrar. 
  

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 SECTION 2.03. Execution and Authentication. 
 Two Officers shall sign, or one Officer shall sign and one Officer (each of whom shall, in each case, have been duly authorized by all requisite corporate
actions) shall attest to, the Notes for the Issuer by manual or facsimile signature. 
 If an Officer whose signature is on a Note was an
Officer at the time of such execution but no longer holds that office at the time the Trustee authenticates the Note, the Note shall be valid nevertheless. 
 No Note shall be entitled to any benefit under this Indenture or be valid or obligatory for any purpose unless there appears on such Note a certificate of authentication substantially in the form provided for herein
executed by the Trustee by manual signature of an authorized officer, and such certificate upon any Note shall be conclusive evidence, and the only evidence, that such Note has been duly authenticated and delivered hereunder. Notwithstanding the
foregoing, if any Note shall have been authenticated and delivered hereunder but never issued and sold by the Issuer, and the Issuer shall deliver such Note to the Trustee for cancellation as provided in Section 2.12, for all purposes of this
Indenture such Note shall be deemed never to have been authenticated and delivered hereunder and shall never be entitled to the benefits of this Indenture. 
 The Trustee may appoint an authenticating agent reasonably acceptable to the Issuer to authenticate the Notes. Unless otherwise provided in the appointment, an authenticating agent may authenticate the 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 has the same rights as an Agent to deal with the Issuer and Affiliates of the Issuer. Each Paying
Agent is designated as an authenticating agent for purposes of this Indenture. 
 The Notes shall be issuable only in registered form without
coupons in minimum denominations of $2,000 and integral multiples of $1,000. 
 SECTION 2.04. Registrar and Paying Agent. 
 The Issuer shall maintain an office or agency (which shall be located in the Borough of Manhattan in The City of New York, State of New York) where Notes
may be presented for registration of transfer or for exchange (the “Registrar”), and an office or agency where Notes may be presented for payment (the “Paying Agent”) and an office or agency where notices and
demands to or upon the Issuer, if any, in respect of the Notes and this Indenture may be served. The Registrar shall keep a register of the principal amount of the Notes (and stated interest therein) and of their transfer and exchange. If and for so
long as the Trustee is not the Registrar, the Trustee shall have the right to inspect the register of the Notes during regular business hours. The Issuer may have one or more additional Paying Agents. The term “Paying Agent”
includes any additional Paying Agent. Neither the Issuer nor any Affiliate thereof may act as Paying Agent. 
 The Issuer shall enter into an
appropriate agency agreement, which shall incorporate the provisions of the TIA, with any Agent that is not a party to this Indenture. The agreement shall implement the provisions of this Indenture that relate to such Agent. The Issuer shall notify
the Trustee of the name and address of any such Agent. If the Issuer fails to maintain a Registrar or Paying Agent, or fails to give the foregoing notice, the Trustee shall act as such and shall be entitled to appropriate compensation in accordance
with Section 7.07. The Issuer or any wholly owned Subsidiary may act as Paying Agent, Registrar, co-registrar or transfer agent. 
 The
Issuer initially appoints the Trustee as Registrar, Paying Agent and Agent for service of notices and demands in connection with the Notes and this Indenture. 
  

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 SECTION 2.05. Paying Agent To Hold Money in Trust. 
 Prior to each due date of the principal or interest on any Notes, the Issuer shall deposit with the Paying Agent a sum sufficient to pay such principal
and interest when so becoming due. Each Paying Agent shall hold in trust for the benefit of the Holders or the Trustee all money held by the Paying Agent for the payment of principal of or premium or interest on the Notes (whether such money has
been paid to it by the Issuer or any other obligor on the Notes or the Guarantors), and the Issuer and the Paying Agent shall notify the Trustee in writing of any default by the Issuer (or any other obligor on the Notes) in making any such payment.
Money held in trust by the Paying Agent need not be segregated except as required by law and in no event shall the Paying Agent be liable for any interest on any money received by it hereunder. The Issuer at any time may require the Paying Agent to
pay all money held by it to the Trustee and account for any funds disbursed and the Trustee may at any time during the continuance of any Event of Default specified in Section 6.01(1) or (2), upon written request to the Paying Agent, require
such Paying Agent to pay forthwith all money so held by it to the Trustee and to account for any funds disbursed by the Paying Agent. Upon making such payment, the Paying Agent shall have no further liability for the money delivered to the Trustee.

 SECTION 2.06. 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 the Holders. If the Trustee is not the Registrar, the Issuer shall furnish to the Trustee at least five
Business Days before each Interest Payment Date, and at such other times as the Trustee may reasonably request in writing, a list in such form and as of such date as the Trustee may reasonably require of the names and addresses of the Holders.

 SECTION 2.07. Transfer and Exchange. 
 Subject to Sections 2.16 and 2.17, when Notes are presented to the Registrar with a request from the Holder of such Notes to register a transfer or to exchange them for an equal principal amount of Notes of other authorized
denominations, the Registrar shall register the transfer as requested if the requirements of this Indenture are met. Every Note presented or surrendered for registration of transfer or exchange shall be duly endorsed or be accompanied by a written
instrument of transfer in form satisfactory to the Issuer and the Registrar, duly executed by the Holder thereof or his attorneys duly authorized in writing. To permit registrations of transfers and exchanges, the Issuer shall issue and execute and
the Trustee shall authenticate new Notes (and the Guarantors shall execute the guarantee thereon) evidencing such transfer or exchange at the Registrar’s request. No service charge shall be made to the Holder for any registration of transfer or
exchange. The Issuer may require from the Holder payment of a sum sufficient to cover any transfer taxes or other governmental charge that may be imposed in relation to a transfer or exchange, but this provision shall not apply to any exchange
pursuant to Section 2.11, 3.06, 4.09, 4.19 or 8.05 (in which events the Issuer shall be responsible for the payment of such taxes). The Registrar shall not be required to exchange or register a transfer of any Note for a period
of 15 days immediately preceding the mailing of notice of redemption of Notes to be redeemed or of any Note selected, called or being called for redemption except the unredeemed portion of any Note being redeemed in part. 
 Any Holder of a Global Note shall, by acceptance of such Global Note, agree that transfers of the beneficial interests in such Global Note may be
effected only through a book entry system maintained by the Holder of such Global Note (or its agent), and that ownership of a beneficial interest in such Global Note shall be required to be reflected in a book entry. 
  

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 Each Holder of a Note agrees to indemnify the Issuer and the Trustee against any liability that may
result from the transfer, exchange or assignment of such Holder’s Note in violation of any provision of this Indenture and/or applicable U.S. Federal or state securities law. 
 Except as expressly provided herein, neither the Trustee nor the Registrar shall have any duty to monitor the Issuer’s compliance with or have any
responsibility with respect to the Issuer’s compliance with any Federal or state securities laws. 
 SECTION 2.08. Replacement Notes. 

If a mutilated Note is surrendered to the Registrar or the Trustee, or if the Holder of a Note claims that the Note has been lost, destroyed or
wrongfully taken, the Issuer shall issue and the Trustee shall authenticate a replacement Note (and the Guarantors shall execute the guarantee thereon) if the Holder of such Note furnishes to the Issuer and the Trustee evidence reasonably acceptable
to them of the ownership and the destruction, loss or theft of such Note and if the requirements of Section 8-405 of the New York Uniform Commercial Code as in effect on the date of this Indenture are met. If required by the Trustee or the
Issuer, an indemnity bond shall be posted by such Holder, sufficient in the judgment of both to protect the Issuer, the Guarantors, the Trustee or any Paying Agent from any loss that any of them may suffer if such Note is replaced. The Issuer and
the Trustee may charge such Holder for their out of pocket expenses in replacing such Note (including, without limitation, attorneys’ fees and disbursements). Every replacement Note shall constitute a contractual obligation of the Issuer.

 SECTION 2.09. Outstanding Notes. 
 The
Notes outstanding at any time are all Notes that have been authenticated by the Trustee except for (a) those cancelled by it, (b) those delivered to it for cancellation, (c) to the extent set forth in Sections 9.01 and 9.02,
on or after the date on which the conditions set forth in Section 9.01 or 9.02 have been satisfied, those Notes theretofore authenticated and delivered by the Trustee hereunder and (d) those described in this Section 2.09 as not
outstanding. Subject to Section 2.10, a Note does not cease to be outstanding because the Issuer or one of its Affiliates holds the Note. 
 If a Note is replaced pursuant to Section 2.08, it ceases to be outstanding unless the Trustee and the Issuer receive proof satisfactory to them that the replaced Note is held by a bona fide purchaser in whose hands such Note is
a legal, valid and binding obligation of the Issuer. 
 If the Paying Agent segregates and holds in trust, in its capacity as such, on any
redemption date or maturity date, money sufficient to pay all accrued interest and principal with respect to the Notes payable on that date and is not prohibited from paying such money to the Holders thereof pursuant to the terms of this Indenture,
then on and after that date such Notes cease to be outstanding and interest on them ceases to accrue. 
 SECTION 2.10. Treasury Notes. 
 In determining whether the Holders of the required principal amount of Notes have concurred in any declaration of acceleration or notice of default or
direction, waiver or consent or any amendment, modification or other change to this Indenture, Notes owned by the Issuer or any other Affiliate of the Issuer shall be disregarded as though they were not outstanding, except that for the purposes of
determining whether the Trustee shall be protected in relying on any such direction, waiver or consent or any amendment, modification or other change to this Indenture, only Notes as to which a Responsible Officer of the Trustee has received an
Officers’ Certificate stating that such Notes are so owned shall be so disregarded. Notes so owned which have been pledged in good faith shall not be disregarded if the pledgee established to the satisfaction of the Trustee the pledgee’s
right so to act with respect to the Notes and that the pledgee is not the Issuer, a Guarantor, any other obligor on the Notes or any of their respective Affiliates. 
  

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 SECTION 2.11. Temporary Notes. 
 Until definitive Notes are prepared and ready for delivery, the Issuer may prepare and the Trustee shall authenticate temporary Notes. Temporary Notes shall be substantially in the form of definitive Notes but may
have variations that the Issuer considers appropriate for temporary Notes. Without unreasonable delay, the Issuer shall prepare and the Trustee shall authenticate definitive Notes in exchange for temporary Notes. Until such exchange, temporary Notes
shall be entitled to the same rights, benefits and privileges as definitive Notes. 
 SECTION 2.12. Cancellation. 
 The Issuer at any time may deliver Notes to the Trustee for cancellation. The Registrar and the Paying Agent shall forward to the Trustee any Notes
surrendered to them for registration of transfer, exchange or payment. The Trustee and no one else shall cancel all Notes surrendered for registration of transfer, exchange, payment, replacement or cancellation and shall (subject to the
record-retention requirements of the Exchange Act) dispose of such cancelled Notes in its customary manner. The Trustee shall deliver a certificate of such disposal to the Issuer upon its request therefor. The Issuer may not reissue or resell, or
issue new Notes to replace, Notes that the Issuer has redeemed or paid, or that have been delivered to the Trustee for cancellation. 
 SECTION 2.13.
Defaulted Interest. 
 If the Issuer defaults on a payment of interest on the Notes, it shall pay the defaulted interest, plus (to the
extent permitted by law) any interest payable on the defaulted interest, in accordance with the terms hereof, to the Persons who are Holders on a subsequent special record date, which date shall be at least five Business Days prior to the payment
date. The Issuer shall fix such special record date and payment date in a manner satisfactory to the Trustee. The Issuer shall promptly mail to each Holder a notice that states the special record date, the payment date and the amount of defaulted
interest, and interest payable on defaulted interest, if any, to be paid. The Issuer may make payment of any defaulted interest in any other lawful manner not inconsistent with the requirements (if applicable) of any securities exchange on which the
Notes may be listed and, upon such notice as may be required by such exchange, if, after written notice given by the Issuer to the Trustee of the proposed payment pursuant to this sentence, such manner of payment shall be deemed practicable by the
Trustee. 
 SECTION 2.14. CUSIP Number. 
 The Issuer in issuing the Notes may use a “CUSIP” number, ISIN and “Common Code” number (in each case if then generally in use), and if so, such CUSIP number, ISIN and Common Code number shall be included in notices of
redemption or exchange as a convenience to Holders; provided that any such notice may state that no representation is made as to the correctness or accuracy of such number either as printed in the notice or on the Notes, and that reliance may
be placed only on the other identification numbers printed on the Notes. The Issuer shall promptly notify, and in any event within 10 Business Days, the Trustee of any such CUSIP number, ISIN and Common Code number used by the Issuer in
connection with the issuance of the Notes and of any change in the CUSIP number, ISIN and Common Code number. 
  

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 SECTION 2.15. Deposit of Moneys. 
 Prior to 10:00 a.m., New York City time, on each Interest Payment Date and maturity date, the Issuer shall have deposited with the Paying Agent in immediately available funds money sufficient to make cash
payments, if any, due on such Interest Payment Date or maturity date, as the case may be, in a timely manner which permits the Trustee to remit payment to the Holders on such Interest Payment Date or maturity date, as the case may be. The principal
and interest on Global Notes shall be payable to the Depository or its nominee, as the case may be, as the sole registered owner and the sole holder of the Global Notes represented thereby. The principal and interest on Physical Notes shall be
payable, either in person or by mail, at the office of the Paying Agent. 
 SECTION 2.16. Book-Entry Provisions for Global Notes. 
 (a) Rule 144A Notes initially shall be represented by one or more notes in registered, global form without interest coupons (collectively, the
“Restricted Global Note”). Regulation S Notes initially shall be represented by one or more notes in registered, global form without interest coupons (collectively, the “Regulation S Global Note,” and,
together with the Restricted Global Note and any other global notes representing Notes, the “Global Notes”). The Global Notes shall bear legends as set forth in Exhibit D. The Global Notes initially shall (i) be
registered in the name of the Depository or the nominee of such Depository, in each case for credit to an account of an Agent Member, (ii) be delivered to the Trustee as custodian for such Depository and (iii) bear legends as set forth in
Exhibit B with respect to Restricted Global Notes and Exhibit C with respect to Regulation S Global Notes. 
 Members of, or direct or indirect participants in, the Depository (“Agent Members”) shall have no rights under this Indenture with respect to any Global Note held on their behalf by the Depository, or the Trustee as its
custodian, or under the Global Notes, and the Depository may be treated by the Issuer, the Trustee and any agent of the Issuer or the Trustee as the absolute owner of the Global Notes for all purposes whatsoever. Notwithstanding the foregoing,
nothing herein shall prevent the Issuer, the Trustee or any agent of the Issuer or the Trustee from giving effect to any written certification, proxy or other authorization furnished by the Depository or impair, as between the Depository and its
Agent Members, the operation of customary practices governing the exercise of the rights of a Holder of any Note. 
 (b) Transfers of Global
Notes shall be limited to transfer in whole, but not in part, to the Depository, its successors or their respective nominees. Interests of beneficial owners in the Global Notes may be transferred or exchanged for Physical Notes in accordance with
the rules and procedures of the Depository and the provisions of Section 2.17. In addition, a Global Note shall be exchangeable for Physical Notes if (i) the Depository (x) notifies the Issuer that it is unwilling or unable to
continue as depository for such Global Note and the Issuer thereupon fails to appoint a successor depository within 90 days thereof or (y) has ceased to be a clearing agency registered under the Exchange Act and the Issuer thereupon
fails to appoint a successor depository within 90 days thereof or (ii) there shall have occurred and be continuing an Event of Default with respect to the Notes. In all cases, Physical Notes delivered in exchange for any Global Note
or beneficial interests therein shall be registered in the names, and issued in any approved denominations, requested by or on behalf of the Depository (in accordance with its customary procedures). 
 (c) In connection with any transfer or exchange of a portion of the beneficial interest in any Global Note to beneficial owners pursuant to
paragraph (b), the Registrar shall (if one or more Physical Notes are to be issued) reflect on its books and records the date and a decrease in the principal amount of the Global Note in an amount equal to the principal amount of the beneficial
interest in the Global Note to be transferred, and the Issuer shall execute, and the Trustee shall upon receipt of a written order from the Issuer authenticate and make available for delivery, one or more Physical Notes of like tenor and amount.

  

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 (d) In connection with the transfer of Global Notes as an entirety to beneficial owners pursuant to
paragraph (b), the Global Notes shall be deemed to be surrendered to the Trustee for cancellation, and the Issuer shall execute, and the Trustee shall authenticate and deliver, to each beneficial owner identified by the Depository in writing in
exchange for its beneficial interest in the Global Notes, an equal aggregate principal amount of Physical Notes of authorized denominations. 
 (e) Any Physical Note constituting a Restricted Note delivered in exchange for an interest in a Global Note pursuant to paragraph (b), (c) or (d) shall, except as otherwise provided by paragraphs (a)(i)(x) and
(c) of Section 2.17, bear the Private Placement Legend or, in the case of the Regulation S Global Note, the legend set forth in Exhibit C, in each case, unless the Issuer determines otherwise in compliance with applicable
law. 
 (f) On or prior to the 40th day after the later of the commencement of the offering of the Notes represented by the
Regulation S Global Note and the issue date of such Notes (such period through and including such 40th day, the “Restricted Period”), a beneficial interest in a Regulation S Global Note may be transferred to a Person
who takes delivery in the form of an interest in the corresponding Restricted Global Note only upon receipt by the Trustee of a written certification from the transferor to the effect that such transfer is being made (i)(a) to a Person whom the
transferor reasonably believes is a Qualified Institutional Buyer in a transaction meeting the requirements of Rule 144A or (b) pursuant to another exemption from the registration requirements under the Securities Act which is accompanied
by an Opinion of Counsel regarding the availability of such exemption and (ii) in accordance with all applicable securities laws of any state of the United States or any other jurisdiction. 
 (g) Beneficial interests in the Restricted Global Note may be transferred to a Person who takes delivery in the form of an interest in the
Regulation S Global Note, whether before or after the expiration of the Restricted Period, only if the transferor first delivers to the Trustee a written certificate to the effect that such transfer is being made in accordance with
Rule 903 or 904 of Regulation S or Rule 144 (if available). 
 (h) Any beneficial interest in one of the Global Notes
that is transferred to a Person who takes delivery in the form of an interest in another Global Note shall, upon transfer, cease to be an interest in such Global Note and become an interest in such other Global Note and, accordingly, shall
thereafter be subject to all transfer restrictions and other procedures applicable to beneficial interests in such other Global Note for as long as it remains such an interest. 
 (i) The Holder of any Global Note may grant proxies and otherwise authorize any Person, including Agent Members and Persons that may hold interests
through Agent Members, to take any action which a Holder is entitled to take under this Indenture or the Notes. 
 (j) None of the Issuer or
the Trustee nor any agent of the Issuer or the Trustee will have any responsibility or liability for any aspect of the records relating to or payments made on account of beneficial ownership interests of a Global Note or maintaining, supervising or
reviewing any records relating to such beneficial ownership interests. 
  

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 SECTION 2.17. Special Transfer Provisions. 
 (a) Transfers to Non-QIB Institutional Accredited Investors and Non-U.S. Persons. The following provisions shall apply with respect to the
registration of any proposed transfer of a Note constituting a Restricted Note to any Institutional Accredited Investor which is not a QIB or to any Non U.S. Person: 
 (i) the Registrar shall register the transfer of any Note constituting a Restricted Note, whether or not such Note bears the Private
Placement Legend, if (x) the requested transfer is after the first anniversary of the date such Note is issued or such other date as such Note shall be freely transferable under Rule 144 as certified in an Officers’ Certificate or
(y) (1) in the case of a transfer to an Institutional Accredited Investor which is not a QIB (excluding Non-U.S. Persons), the proposed transferee has delivered to the Registrar a certificate substantially in the form of
Exhibit E hereto or (2) in the case of a transfer to a Non-U.S. Person (including a QIB), the proposed transferor has delivered to the Registrar a certificate substantially in the form of Exhibit F hereto;
provided that in the case of any transfer of a Note bearing the Private Placement Legend for a Note not bearing the Private Placement Legend, the Registrar has received an Officers’ Certificate authorizing such transfer; and 

(ii) if the proposed transferor is an Agent Member holding a beneficial interest in a Global Note, upon receipt by the Registrar of
(x) the certificate, if any, required by paragraph (i) above and (y) instructions given in accordance with the Depository’s and the Registrar’s procedures, 
 whereupon (a) the Registrar shall reflect on its books and records the date and (if the transfer does not involve a transfer of outstanding Physical Notes) a decrease in the principal amount of a Global Note in
an amount equal to the principal amount of the beneficial interest in a Global Note to be transferred, and (b) the Registrar shall reflect on its books and records the date and an increase in the principal amount of a Global Note in an amount
equal to the principal amount of the beneficial interest in the Global Note transferred or the Issuer shall execute and the Trustee shall authenticate and make available for delivery one or more Physical Notes of like tenor and amount. 

(b) Transfers to QIBs. The following provisions shall apply with respect to the registration or any proposed registration of transfer of a Note
constituting a Restricted Note to a QIB (excluding transfers to Non-U.S. Persons): 
 (i) the Registrar shall register
the transfer if such transfer is being made by a proposed transferor who has checked the box provided for on such Holder’s Note stating, or has otherwise advised the Issuer and the Registrar in writing, that the sale has been made in compliance
with the provisions of Rule 144A to a transferee who has signed the certification provided for on such Holder’s Note stating, or has otherwise advised the Issuer and the Registrar in writing, that it is purchasing the Note for its own
account or an account with respect to which it exercises sole investment discretion and that it and any such account is a QIB within the meaning of Rule 144A, and is aware that the sale to it is being made in reliance on Rule 144A and
acknowledges that it has received such information regarding the Issuer as it has requested pursuant to Rule 144A or has determined not to request such information and that it is aware that the transferor is relying upon its foregoing
representations in order to claim the exemption from registration provided by Rule 144A; and 
 (ii) if the proposed
transferee is an Agent Member, and the Notes to be transferred consist of Physical Notes which after transfer are to be evidenced by an interest in the Global Note, upon receipt by the Registrar of instructions given in accordance with the
Depository’s and the Registrar’s procedures, the Registrar shall reflect on its books and records the date and an increase in the principal amount of the Global Note in an amount equal to the principal amount of the Physical Notes to be
transferred, and the Trustee shall cancel the Physical Notes so transferred. 
  

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 (c) Private Placement Legend. Upon the registration of transfer, exchange or replacement of Notes
not bearing the Private Placement Legend, the Registrar shall deliver Notes that do not bear the Private Placement Legend. Upon the registration of transfer, exchange or replacement of Notes bearing the Private Placement Legend, the Registrar shall
deliver only Notes that bear the Private Placement Legend unless (i) it has received the Officers’ Certificate required by paragraph (a)(i)(y) of this Section 2.17, (ii) there is delivered to the Registrar an Opinion of
Counsel reasonably satisfactory to the Issuer and the Trustee to the effect that neither such legend nor the related restrictions on transfer are required in order to maintain compliance with the provisions of the Securities Act or (iii) such
Note has been sold pursuant to an effective registration statement under the Securities Act and the Registrar has received an Officers’ Certificate from the Issuer to such effect. 
 (d) General. By its acceptance of any Note bearing the Private Placement Legend, each Holder of such Note acknowledges the restrictions on
transfer of such Note set forth in this Indenture and in the Private Placement Legend and agrees that it will transfer such Note only as provided in this Indenture. 
 The Registrar shall retain for a period of two years copies of all letters, notices and other written communications received pursuant to Section 2.16 or this Section 2.17. The Issuer shall have the right to
inspect and make copies of all such letters, notices or other written communications at any reasonable time upon the giving of reasonable notice to the Registrar. 
 SECTION 2.18. Computation of Interest. 
 Interest on the Notes shall be computed on the basis of a 360-day
year of twelve 30-day months. 
 ARTICLE THREE 
 REDEMPTION 
 SECTION 3.01. Election To Redeem; Notices to Trustee. 
 If the Issuer elects to redeem Notes pursuant to paragraph 6 of the Notes, at least 45 days prior to the Redemption Date (unless a shorter
notice shall be agreed to in writing by the Trustee), the Issuer shall notify the Trustee in writing of the Redemption Date, the principal amount of Notes to be redeemed and the redemption price, and deliver to the Trustee an Officers’
Certificate stating that such redemption will comply with the conditions contained in paragraph 6 of the Notes. Notice given to the Trustee pursuant to this Section 3.01 may not be revoked after the time that notice is given to Holders
pursuant to Section 3.03. As set forth in paragraph 6 of the Notes, up to 50% of the aggregate principal amount of the Notes may be redeemed in whole or in part, at any time, on or after the first anniversary of the Initial Issue Date and prior
to the third anniversary of the Initial Issue Date at the Redemption Price. At any time after the third anniversary of the Initial Issue Date, all or any of the Notes may be redeemed from time to time at the Redemption Price. 
 SECTION 3.02. Selection by Trustee of Notes To Be Redeemed. 
 In the event that less than all of the Notes are to be redeemed pursuant to a redemption made pursuant to paragraph 6 of the Notes, selection of the Notes for redemption shall be made by the Trustee 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 then listed on a national security exchange, on a pro rata basis, by lot; provided, however, that no Notes of a
principal amount of $2,000 or less shall be 

  

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redeemed in part. If a partial redemption is made pursuant to the second paragraph of paragraph 6 of the Notes, selection of the Notes or portions
thereof for redemption shall be made by the Trustee only on a pro rata basis or on as nearly a pro rata basis as is practicable (subject to the procedures of the Depository), unless that method is otherwise prohibited. The Trustee
shall promptly notify the Issuer of the Notes selected for redemption and, in the case of any Notes selected for partial redemption, the principal amount thereof to be redeemed. The Trustee may select for redemption portions of the principal of the
Notes that have denominations larger than $2,000. For all purposes of this Indenture unless the context otherwise requires, provisions of this Indenture that apply to Notes called for redemption also apply to portions of Notes called for redemption.
The Issuer may acquire Notes by means other than redemption, whether pursuant to an Issuer tender offer, open market purchase or otherwise, provided such acquisition does not otherwise violate the other terms of this Indenture. 
 SECTION 3.03. Notice of Redemption. 
 At
least 30 days, and no more than 60 days, before a Redemption Date, the Issuer shall mail, or cause to be mailed, a notice of redemption by first-class mail to each Holder of Notes to be redeemed at his or her last address as the
same appears on the registry books maintained by the Registrar pursuant to Section 2.04, except that redemption notices may be mailed more than 60 days prior to a redemption date if the notice is issued in connection with a
satisfaction and discharge of this Indenture. If the Issuer mails such notice to Holders, it shall mail a copy of such notice to the Trustee at the same time. 
 The notice shall identify the Notes to be redeemed (including the CUSIP numbers ISIN and Common Code numbers, if any thereof) and shall state: 
 (1) the Redemption Date; 
 (2) the redemption price and the amount of premium (or the manner of calculation the redemption price and/or premium) and accrued interest to be paid; 
 (3) 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 and upon surrender of such Note, a new Note or Notes in principal amount equal to the unredeemed portion will be issued; 
 (4) the name and address of the Paying Agent; 
 (5) that Notes called for redemption must be surrendered to the
Paying Agent to collect the redemption price; 
 (6) that unless the Issuer defaults in making the redemption payment,
interest on Notes called for redemption ceases to accrue on and after the Redemption Date; 
 (7) the provision of
paragraph 6 of the Notes, as the case may be, pursuant to which the Notes called for redemption are being redeemed; and 
 (8) the aggregate principal amount of Notes that are being redeemed. 
 At the Issuer’s written request made at least ten
Business Days prior to the date on which notice is to be given, the Trustee shall give the notice of redemption prepared by the Issuer, in the Issuer’s name and at the Issuer’s sole expense. In such event, the Issuer shall provide the
Trustee with the information required by this Section 3.03. 
  

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 SECTION 3.04. Effect of Notice of Redemption. 
 Once the notice of redemption described in Section 3.03 is mailed, Notes called for redemption become due and payable on the Redemption Date and at
the redemption price, including any premium, plus interest accrued to the Redemption Date. Upon surrender to the Paying Agent, such Notes shall be paid at the redemption price, including any premium, plus interest accrued to the Redemption Date,
provided that if the Redemption Date is after a regular record date and on or prior to the Interest Payment Date, the accrued interest shall be payable to the Holder of the redeemed Notes registered on the relevant record date, and
provided, further, that if a Redemption Date is a Legal Holiday, payment shall be made on the next succeeding Business Day and no interest shall accrue for the period from such Redemption Date to such succeeding Business Day. Failure
to give notice or any defect in the notice to any Holder shall not affect the validity of the notice to any other Holder. 
 SECTION 3.05. Deposit of
Redemption Price. 
 On or prior to 10:00 A.M., New York City time, on each Redemption Date, the Issuer shall deposit with the Paying
Agent in immediately available funds money sufficient to pay the redemption price of, including premium, if any, and accrued interest on all Notes to be redeemed on that date other than Notes or portions thereof called for redemption on that date
which have been delivered by the Issuer to the Trustee for cancellation. Promptly after the calculation of the Redemption Price, the Issuer will give the Trustee and any Paying Agent written notice thereof. 
 On and after any Redemption Date, if money sufficient to pay the redemption price of, including premium, if any, and accrued interest on Notes called for
redemption shall have been made available in accordance with the preceding paragraph, the Notes called for redemption will cease to accrue interest and the only right of the Holders of such Notes will be to receive payment of the redemption price of
and, subject to the first proviso in Section 3.04, accrued and unpaid interest on such Notes to the Redemption Date. If any Note surrendered for redemption shall not be so paid, interest will be paid, from the Redemption Date until such
redemption payment is made, on the unpaid principal of the Note and any interest not paid on such unpaid principal, in each case, at the rate and in the manner provided in the Notes. 
 SECTION 3.06. Notes Redeemed in Part. 
 Upon surrender of a Note that is redeemed in part, the Issuer
shall execute and the Trustee shall authenticate for the Holder thereof a new Note equal in principal amount to the unredeemed portion of the Note surrendered. 
 ARTICLE FOUR 
 COVENANTS 
 SECTION 4.01. Payment of Notes. 
 The Issuer shall pay the principal of and interest on the Notes on the dates and in the
manner provided in the Notes and this Indenture. An installment of principal or interest shall be considered paid on the date it is due if the Trustee or Paying Agent holds on that date money designated for and sufficient to pay such installment.

  

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 The Issuer shall pay interest on overdue principal (including post-petition interest in a proceeding
under any Bankruptcy Law), and overdue interest, to the extent lawful, at the rate specified in the Notes. 
 If a Holder fails to provide
the Trustee and the Issuer with appropriate tax certifications providing an exemption from the applicable withholding tax (which, in respect of United States federal income tax laws, includes (i) an Internal Revenue Service Form W-9 for
U.S. persons or its successor form, or (ii) an appropriate Internal Revenue Service Form W-8 for non-U.S. persons or the applicable successor form), the Issuer shall be entitled to withhold an amount from interest and/or
principal payments to be made to such Holder pursuant to this Section 4.01 that equals the applicable withholding tax. Any installment of principal or interest due pursuant to this Section 4.01 shall be considered fully paid even if such
amount is withheld from the installment otherwise due to such Holder. 
 SECTION 4.02. Reports. 
 (a) Whether or not required by the SEC, so long as any Notes are outstanding, the Issuer will file with the SEC (unless the SEC will not accept such a
filing) within the time periods specified in the SEC’s rules and regulations, unless already publicly available on the SEC’s EDGAR filing system, the Issuer (a) will furnish (without exhibits) to the Trustee for delivery to the
Holders of Notes and (b) post on its website or otherwise make available to prospective purchasers of the Notes: 
 (1)
all quarterly and annual financial information that would be required to be contained in a filing with the SEC on Forms 10-Q and 10-K if the Issuer were required to file such forms, including a “Management’s discussion and
analysis of financial condition and results of operations” and, with respect to the annual information only, a report on the annual financial statements by the Issuer’s independent auditors; and 
 (2) all current reports that would be required to be filed with the SEC on Form 8-K if the Issuer were required to file such reports.

 (b) Notwithstanding the foregoing, it is understood that for so long as the Issuer is exempt from the reporting requirements of
Section 13(a) or 15(d) of the Exchange Act and the Parent files with the SEC and provides (unless already public on the Commission’s EDGAR filing system) the Trustee and Holders with such annual reports and such information, documents
and other reports as are specified in Section 13 and 15(d) of the Exchange Act and applicable to a corporation subject to such Sections (such information, documents and reports to be so filed with the SEC and provided at the times
specified for the filing of such information, documents and reports under such Sections), the Issuer shall not be required to file such information, documents and reports with the SEC or provide such information, documents and reports to the Trustee
and the Holders as otherwise required pursuant to this Section 4.02. 
 (c) So long as any Notes remain outstanding, the Issuer shall
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. 
 SECTION 4.03. Waiver of Stay, Extension or Usury Laws. 
 Each of the Parent, the Issuer and the Guarantors covenants (to the extent that it may lawfully do so) that it shall not at any time insist upon, or plead (as a defense or otherwise) or in any manner whatsoever claim or take the benefit or
advantage of, any stay or extension law or any usury law or other law which would prohibit or forgive any of the Parent, the Issuer and the Guarantors from paying all or 

  

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any portion of the principal of, premium, if any, and/or interest on the Notes as contemplated herein, wherever enacted, now or at any time hereafter in
force, or which may affect the covenants or the performance of this Indenture; and (to the extent that they may lawfully do so) each of the Parent, the Issuer and the Guarantors hereby expressly waives all benefit or advantage of any such law, and
covenants that it will not hinder, delay or impede the execution of any power herein granted to the Trustee, but will suffer and permit the execution of every such power as though no such law had been enacted. 
 SECTION 4.04. Compliance Certificate; Notice of Default. 
 (a) The Issuer or the Parent shall deliver to the Trustee, within 90 days after the end of each fiscal year, an Officers’ Certificate stating that a review of the activities of the Parent and its Subsidiaries during such
fiscal year has been made under the supervision of the signing Officers with a view to determining whether the Parent, the Issuer and the Guarantors 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 Parent, the Issuer and the Guarantors 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 hereof (or, if a Default shall have occurred, describing all such Defaults of which he or she may have knowledge and what action they are taking or
propose 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 or interest, if any, on the Notes is prohibited or if such
event has occurred, a description of the event and what action the Parent, the Issuer and the Guarantors are taking or propose to take with respect thereto. 
 (b) The Issuer shall, so long as any of the Notes are outstanding, deliver to the Trustee, forthwith upon any Officer becoming aware of any Default, an Officers’ Certificate specifying such Default and what
action the Parent, the Issuer and the Guarantors are taking or propose to take with respect thereto. 
 (c) The Issuer’s fiscal year
currently ends on December 31. The Issuer shall provide written notice to the Trustee of any change in its fiscal year. Failure to provide any such Notice will not constitute a Default under this Indenture. 
 SECTION 4.05. Taxes. 
 The Parent, the Issuer and the
Guarantors shall, and shall cause each of their Subsidiaries to, pay prior to delinquency all material Taxes except as contested in good faith and by appropriate proceedings. 
 SECTION 4.06. Limitations on Additional Indebtedness. 
 The Parent shall not, and shall not permit any
Restricted Subsidiary (including the Issuer) to, directly or indirectly, incur any Indebtedness; provided that the Parent, the Issuer or any Guarantor may incur additional Indebtedness if, after giving pro forma effect thereto (including the
application of the net proceeds therefrom), the Consolidated Leverage Ratio would not exceed 3.00 to 1.00 (the “Incurrence Leverage Ratio”). 
  

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 Notwithstanding the above, each of the following, which shall be given independent effect in whole or in
part, shall be permitted (the “Permitted Indebtedness”): 
 (1) Indebtedness of the Parent and any Restricted
Subsidiary (including the Issuer) under any Credit Facility, in an aggregate principal amount at any time outstanding not to exceed $20,000,000; 
 (2) the Initial Notes and the Note Guarantees in respect thereof (including any future Note Guarantee); 
 (3) Indebtedness of the Parent and the Restricted Subsidiaries (including the Issuer) to the extent outstanding on the Initial Issue Date after giving effect to the intended use of proceeds of the Initial Notes (other
than Indebtedness referred to in clause (1), (2) or (5)) in an amount not to exceed $3.0 million; 
 (4)
Indebtedness under Hedging Obligations entered into for bona fide hedging purposes of the Parent or any Restricted Subsidiary (including the Issuer) not for the purpose of speculation; provided that the notional principal amount of
such Hedging Obligations at the time incurred does not exceed the principal amount of the Indebtedness to which such Hedging Obligations relate; 
 (5) Indebtedness of the Parent owed to a Restricted Subsidiary (including the Issuer) and Indebtedness of any Restricted Subsidiary (including the Issuer) owed to the Parent or any other Restricted Subsidiary
(including the Issuer); provided, however, that upon any such Restricted Subsidiary ceasing to be a Restricted Subsidiary or such Indebtedness being owed to any Person other than the Parent, the Issuer or a Restricted Subsidiary, the Parent,
the Issuer or such Restricted Subsidiary, as applicable, shall be deemed to have incurred Indebtedness not permitted by this clause (5); 
 (6) (a) Indebtedness in respect of bid, performance, completion, guarantee, surety and similar bonds and assurances issued for the account of the Parent or any Restricted Subsidiary (including the Issuer) in the
ordinary course of business, including guarantees or obligations of the Parent or any Restricted Subsidiary (including the Issuer) with respect to letters of credit supporting such bid, performance, completion, guarantee or surety obligations (in
each case other than for an obligation for money borrowed); and (b) Indebtedness constituting reimbursement obligations with respect to letters of credit issued in the ordinary course of business in respect of (i) workers’
compensation claims or self-insurance, (ii) other Indebtedness with respect to reimbursement type obligations regarding workers’ compensation claims or self-insurance or (iii) for regulatory or insurance purposes; 
 (7) Purchase Money Indebtedness and/or Attributable Debt, in an aggregate amount not to exceed at any time outstanding 10% of the
Parent’s and its Restricted Subsidiaries (including the Issuer) Consolidated Net Assets; 
 (8) Indebtedness arising from
the honoring by a bank or other financial institution of a check, draft or similar instrument inadvertently (except in the case of daylight overdrafts) drawn against insufficient funds; provided, however, that such Indebtedness is
extinguished within five Business Days of the Parent or a Restricted Subsidiary (including the Issuer), as the case may be, being notified of such overdraft; 
 (9) Indebtedness arising in connection with endorsement of instruments for deposit in the ordinary course of business; 
  

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 (10) Refinancing Indebtedness with respect to Indebtedness incurred pursuant to the
Incurrence Leverage Ratio or clause (2) or (3) above or this clause (10); 
 (11) Indemnification, adjustment
of purchase price, earn-out or similar obligations, in each case incurred or assumed in connection with the acquisition or disposition of any business or assets of the Parent or any Restricted Subsidiary (including the Issuer) or the acquisition,
disposition, issuance or redemption of Equity Interests of the Parent or a Restricted Subsidiary (including the Issuer), other than guarantees of Indebtedness incurred by any Person acquiring all or any portion of such business, assets or Equity
Interests for the purpose of financing or in contemplation of any such acquisition; provided that in the case of a disposition, the maximum aggregate liability in respect of all such obligations outstanding under this clause (11) shall
at no time exceed the gross proceeds or value of the consideration actually received by the Issuer and the Restricted Subsidiaries (including the Issuer) in connection with such disposition; 
 (12) Indebtedness of the Parent or any Restricted Subsidiary (including the Issuer) that is attributable to or secured by Auction Rate
Securities; provided that the holder of such Indebtedness shall not have any recourse for the payment thereof except to the proceeds of the Auction Rate Securities securing such Indebtedness; 
 (13) Indebtedness of the Parent or any Restricted Subsidiary (including the Issuer) in an aggregate amount not to exceed $10.0 million at
any time outstanding; 
 (14) Indebtedness consisting of Guarantees of Indebtedness otherwise permitted to be Incurred; and

 (15) Acquired Indebtedness; provided, however, that at the time that Restricted Subsidiary was acquired by the Issuer or
the Parent or otherwise became a Restricted Subsidiary and after giving effect to the incurrence of that Indebtedness, the Issuer or the Parent would have been able to incur $1.00 of additional Indebtedness pursuant to the Incurrence Leverage Ratio.

 For purposes of determining compliance with this Section 4.06, in the event that an item of Indebtedness meets the criteria of more
than one of the categories of Permitted Indebtedness described in clauses (1) through (15) above or is entitled to be incurred pursuant to the Incurrence Leverage Ratio, the Issuer shall, in its sole discretion, classify such item of
Indebtedness and may divide and classify such Indebtedness in more than one of the types of Indebtedness described, and may later reclassify any item of Indebtedness as having been Incurred pursuant to the Incurrence Leverage Ratio or pursuant to
any of clauses (1) through (15) above (provided that at the time of reclassification it meets the criteria in such category or categories). Notwithstanding the foregoing, any Indebtedness Incurred pursuant to the Incurrence Leverage
Ratio must have a greater Weighted Average Life to Maturity than the Notes and a stated maturity that is later than the stated maturity of the Notes. 
 SECTION 4.07. [Intentionally left blank]. 
 SECTION 4.08. Limitations on Restricted Payments. 
 The Parent shall not, and shall not permit any Restricted Subsidiary (including the Issuer) to, directly or indirectly, make any Restricted Payment if at
the time of such Restricted Payment: 
 (1) a Default shall have occurred and be continuing or shall occur as a consequence
thereof; 
  

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 (2) the Parent cannot incur $1.00 of additional Indebtedness pursuant to the Incurrence
Leverage Ratio; or 
 (3) the amount of such Restricted Payment, (the amount so expended, if other than in cash, to be
determined in good faith by the Board of Directors) when added to the aggregate amount of all other Restricted Payments made after the Initial Issue Date (other than Restricted Payments made pursuant to clauses (2), (3), (4), (7) or
(8) of the next paragraph), exceeds the sum (the “Restricted Payments Basket”) of (without duplication): 
 (a) 50% of Consolidated Net Income of the Parent and its Restricted Subsidiaries (including the Issuer) for the period (taken as one accounting period) commencing on the first day of the fiscal quarter in which the Initial Issue Date occurs
to and including the last day of the fiscal quarter ended immediately prior to the date of such calculation for which consolidated financial statements are internally available (or, if such Consolidated Net Income shall be a deficit, minus 100%
of such aggregate deficit), plus 
 (b) 100% of the aggregate net cash proceeds received by the Parent either (x) as
contributions to the common equity of the Parent after the Initial Issue Date or (y) from the issuance and sale of Qualified Equity Interests after the Initial Issue Date, other than (A) any such proceeds which are used to redeem Notes in
accordance with Section 6(b) of the Notes or (B) any such proceeds or assets received from a Subsidiary, plus 
 (c) the aggregate amount by which Indebtedness incurred by the Parent or any Restricted Subsidiary (including the Issuer) subsequent to the Initial Issue Date is reduced on the Parent’s balance sheet upon the conversion or exchange
into Qualified Equity Interests of the Parent (less the amount of any cash, or the fair value of assets, distributed by the Parent or any Restricted Subsidiary to a Person other than the Parent or a Restricted Subsidiary upon such conversion or
exchange), plus 
 (d) in the case of the disposition or repayment of or liquidated return on any Investment that was treated
as a Restricted Payment made after the Initial Issue Date, an amount (to the extent not included in the computation of Consolidated Net Income) equal to the lesser of (i) 100% of the aggregate amount received by the Parent or any Restricted
Subsidiary (including the Issuer) in cash or other property (valued at the Fair Market Value thereof) as the return of capital with respect to such Investment and (ii) the amount of such Investment that was treated as a Restricted Payment, in
either case, less the cost of the disposition of such Investment and net of taxes, plus 
 (e) upon a Redesignation of an
Unrestricted Subsidiary as a Restricted Subsidiary, the lesser of (i) the Fair Market Value of the Parent’s proportionate interest in such Subsidiary immediately following such Redesignation, and (ii) the aggregate amount of the
Parent’s Investments in such Subsidiary to the extent such Investments prior to such Redesignation had reduced the Restricted Payments Basket and were not previously repaid or otherwise reduced. 
  

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 The foregoing provisions, which shall be given independent effect in whole or in part, shall not
prohibit: 
 (1) the payment by the Parent or any Restricted Subsidiary (including the Issuer) of any dividend
within 60 days after the date of declaration thereof, if on the date of declaration the payment would have complied with the provisions of this Indenture; 
 (2) the redemption of any Equity Interests of the Parent or any Restricted Subsidiary (including the Issuer) in exchange for, or out of
the proceeds of the substantially concurrent issuance and sale of, Qualified Equity Interests or of a substantially concurrent capital contribution to the Parent; provided that any proceeds from the issuance and sale of such Qualified Equity
Interests shall be excluded from the calculation of the Restricted Payments Basket; 
 (3) the redemption of Subordinated
Indebtedness of the Parent or any Restricted Subsidiary (including the Issuer) (a) in exchange for, or out of the proceeds of the substantially concurrent issuance and sale of, Qualified Equity Interests, (b) in exchange for, or out of the
proceeds of the substantially concurrent incurrence of, Refinancing Indebtedness permitted to be incurred under Section 4.06 and the other terms of this Indenture or (c) upon a Change of Control or in connection with an Asset Sale to the
extent required by the agreement governing such Subordinated Indebtedness, but only if the Issuer shall have complied with Section 4.09 and Section 4.19 and purchased all Notes validly tendered pursuant to the relevant offer prior to
redeeming such Subordinated Indebtedness; provided that any proceeds from the issuance and sale of such Qualified Equity Interests shall be excluded from the calculation of the Restricted Payments Basket; 
 (4) repurchases of Equity Interests deemed to occur upon the exercise of stock options, warrants and other similar rights to acquire
Equity Interests if the Equity Interests represent a portion of the exercise price thereof, or payments made pursuant to the “Buy-In” provisions of the warrants (or any successor warrants thereto) issued on the Initial Issuance Date;

 (5) the repurchase of Equity Interests of the Parent (including options, warrants or other rights to acquire such Equity
Interests) from employees, former employees, directors, former directors, officers, former officers, consultants or former consultants of the Parent or any of its Subsidiaries (or Heirs or other permitted transferees of any of the foregoing),
pursuant to the terms of the agreements (including employment agreements) or plans (or amendments thereto) approved by the Board of Directors of the Parent (or such direct or indirect parent) under which such individuals purchase or sell or are
granted the option to purchase or sell, such Equity Interests in an aggregate amount that shall not exceed $2.5 million in any calendar year, with unused amounts being carried forward to the next calendar year, plus the aggregate cash proceeds
from any payments on insurance policies in which the Parent or any of its Subsidiaries is the beneficiary with respect to any directors, officers or employees of the Parent and its Subsidiaries which proceeds are used to purchase the Equity
Interests of the Parent or any Restricted Subsidiary (including the Issuer) held by any of such directors, officers or employees; or 
 (6) Restricted Payments in an amount such that the sum of the aggregate amount of Restricted Payments made pursuant to this clause (6) after the Initial Issue Date does not exceed $10.0 million; 
  

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 (7) the declaration and payment of dividends to holders of any class or series of
Disqualified Stock or of any Preferred Stock of a Restricted Subsidiary (including the Issuer) Incurred in accordance with Section 4.06; and 
 (8) transactions pursuant to, in connection with, or contemplated by the Purchase Agreement. 
 provided that no
issuance and sale of Qualified Equity Interests used to make a payment pursuant to clause (2) or (3)(a) above shall increase the Restricted Payments Basket. 
 SECTION 4.09. Limitations on Asset Sales. 
 The Parent shall not, and shall not permit any Restricted
Subsidiary (including the Issuer) to, directly or indirectly, consummate any Asset Sale unless: 
 (1) the Parent or such
Restricted Subsidiary (including the Issuer) receives consideration at the time of such Asset Sale at least equal to the Fair Market Value of the assets included in such Asset Sale; and 
 (2) at least 75% of the total consideration in such Asset Sale consists of cash or Cash Equivalents. 
 For purposes of clause (2), the following shall be deemed to be cash: 
 (a) the amount (without duplication) of any Indebtedness (other than Subordinated Indebtedness), accounts payable and accrued expenses of
the Parent or such Restricted Subsidiary (including the Issuer) that is expressly assumed by the transferee in such Asset Sale and, in the case of any such Indebtedness, with respect to which the Issuer or such Restricted Subsidiary (including the
Issuer), as the case may be, is unconditionally released by the holder of such Indebtedness, and, in the case of any such accounts payable and accrued expenses, that are paid in full, satisfied or discharged within 90 days of such
assumption; 
 (b) the amount of any notes, obligations or securities received from such transferee that are
within 90 days converted by the Parent or such Restricted Subsidiary (including the Issuer) to cash (to the extent of the cash actually so received); and 
 (c) the Fair Market Value of (i) any fixed assets (other than securities) received by the Parent or any Restricted Subsidiary
(including the Issuer) to be used by it in a Permitted Business, (ii) Qualified Equity Interests in a Person that is a Restricted Subsidiary or in a Person engaged in a Permitted Business that shall become a Restricted Subsidiary immediately
upon the acquisition of such Person by the Parent or a Restricted Subsidiary (including the Issuer) or (iii) a combination of (i) and (ii). 
 If at any time any non-cash consideration received by the Parent or any Restricted Subsidiary (including the Issuer), as the case may be, in connection with any Asset Sale is repaid or converted into or sold or
otherwise disposed of for cash (other than interest received with respect to any such non-cash consideration), then the date of such repayment, conversion or disposition shall be deemed to constitute the date of an Asset Sale hereunder and the Net
Available Proceeds thereof shall be applied in accordance with this Section 4.09. 
  

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 If the Parent or any Restricted Subsidiary (including the Issuer) engages in an Asset Sale, the Parent or
such Restricted Subsidiary (including the Issuer) shall, no later than 365 days following the consummation thereof, apply all or any of the Net Available Proceeds therefrom to: 
 (1) satisfy all mandatory repayment obligations under any Credit Facility arising by reason of such Asset Sale, and in the case of any
such repayment under any Credit Facility, effect a permanent reduction in the availability under such Credit Facility; 
 (2)
repay any Indebtedness which was secured by the assets sold in such Asset Sale; 
 (3) (A) invest (or enter into a definitive
agreement to invest) all or any part of the Net Available Proceeds thereof in fixed assets to be used by the Parent or any Restricted Subsidiary (including the Issuer) in a Permitted Business, (B) acquire (or enter into a definitive agreement
to acquire) Qualified Equity Interests in a Person that is a Restricted Subsidiary or in a Person engaged in a Permitted Business that shall become a Restricted Subsidiary immediately upon the consummation of such acquisition, (C) capital
expenditures, or (D) a combination of (A), (B) and (C); and/or 
 (4) make a Net Proceeds Offer (and redeem Pari
Passu Indebtedness) in accordance with the procedures described below and in this Indenture; provided, however, that if the Net Available Proceeds from such Asset Sale are greater than $50.0 million, the Parent or Restricted Subsidiary
shall, no later than 30 days following the consummation thereof, apply such Net Available Proceeds to item 2 above and/or to commence a Net Proceeds Offer and shall not apply the Net Available Proceeds for any other purpose set forth above.

 The amount of Net Available Proceeds not applied or invested as provided in this paragraph for Asset Sales will constitute “Excess
Proceeds.” 
 When the aggregate amount of Excess Proceeds equals or exceeds $10.0 million, the Parent or the Issuer shall make
an Offer to Purchase from all Holders and, if applicable, redeem (or make an offer to do so) any Pari Passu Indebtedness of the Parent or the Issuer or any Guarantor the provisions of which require the Parent or the Issuer or any Guarantor to redeem
such Indebtedness with the proceeds from any Asset Sales (or offer to do so), in an aggregate principal amount of Notes and such Pari Passu Indebtedness equal to the amount of such Excess Proceeds as follows: 
 (1) the Parent or the Issuer shall (a) make an Offer to Purchase (a “Net Proceeds Offer”) to all Holders in
accordance with the procedures set forth in this Indenture, and (b) redeem (or make an offer to do so) any such other Pari Passu Indebtedness, pro rata in proportion to the respective principal amounts of the Notes and such other
Indebtedness required to be redeemed, the maximum principal amount of Notes and Pari Passu Indebtedness that may be redeemed out of the amount (the “Payment Amount”) of such Excess Proceeds; 
 (2) the offer price for the Notes shall be payable in cash in an amount equal to 100% of the principal amount of the Notes tendered
pursuant to a Net Proceeds Offer, plus accrued and unpaid interest thereon, if any, to, but not including, the date such Net Proceeds Offer is consummated (the “Offered Price”), in accordance with the procedures set forth in this
Indenture and the redemption price for such Pari Passu Indebtedness (the “Pari Passu Indebtedness Price”) shall be as set forth in the related documentation governing such Indebtedness; 
  

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 (3) if the aggregate Offered Price of Notes validly tendered and not withdrawn by Holders
thereof exceeds the pro rata portion of the Payment Amount allocable to the Notes, Notes to be purchased shall be selected on a pro rata basis; and 
 (4) upon completion of such Net Proceeds Offer in accordance with the foregoing provisions, the amount of Excess Proceeds with respect to
which such Net Proceeds Offer was made shall be deemed to be zero. 
 To the extent that the sum of the aggregate Offered Price of Notes
tendered pursuant to a Net Proceeds Offer and the aggregate Pari Passu Indebtedness Price paid to the holders of such Pari Passu Indebtedness is less than the Payment Amount relating thereto (such shortfall constituting a “Net Proceeds
Excess”), the Parent or the Issuer may use the Net Proceeds Excess, or a portion thereof, for general corporate purposes, subject to the provisions of this Indenture. 
 The Parent and the Issuer shall comply with applicable tender offer rules, including the requirements of Rule 14e 1 under the Exchange Act and
any other applicable laws and regulations in connection with the purchase of Notes pursuant to a Net Proceeds Offer. To the extent that the provisions of any securities laws or regulations conflict with this Section 4.09, the Parent and the
Issuer shall comply with the applicable securities laws and regulations and shall not be deemed to have breached its obligations under this Section 4.09 by virtue of this compliance. The Issuer’s obligation to make an Offer to Purchase
shall be satisfied if a third party makes the offer in the manner and at the times otherwise in compliance with the requirements herein. 
 SECTION 4.10.
Limitations on Transactions with Affiliates. 
 The Parent shall not, and shall not permit any Restricted Subsidiary (including the
Issuer) to, directly or indirectly, in one transaction or a series of related transactions, sell, lease, transfer or otherwise dispose of any of its assets to, or purchase any assets from, or enter into any contract, agreement, understanding, loan,
advance or guarantee with, or for the benefit of, any Affiliate (an “Affiliate Transaction”), involving aggregate consideration or value in excess of $2.5 million, unless: 
 (1) such Affiliate Transaction is on terms that are no less favorable to the Parent or the Issuer or the relevant Restricted Subsidiary
than those that would reasonably have been obtained in a comparable transaction at such time on an arm’s-length basis by the Parent, the Issuer or that Restricted Subsidiary from a Person that is not an Affiliate of the Parent, the Issuer or
that Restricted Subsidiary; and 
 (2) the Parent or the Issuer delivers to the Trustee: 
 (a) with respect to any Affiliate Transaction involving aggregate payments or value in excess of $10.0 million, an Officers’
Certificate certifying that such Affiliate Transaction complies with clause (1) above and a Secretary’s Certificate which sets forth and authenticates a resolution that has been adopted by a majority of the Independent Directors approving
such Affiliate Transaction; and 
 (b) with respect to any Affiliate Transaction involving aggregate payments or value of
$35.0 million or more, the certificates described in the preceding clause (a) and a written opinion as to the fairness of such Affiliate Transaction to the Parent, the Issuer or such Restricted Subsidiary from a financial point of view
issued by an Independent Financial Advisor to the Board of Directors of the Parent or the Issuer. 
  

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 The foregoing restrictions shall not apply to: 
 (2) transactions between or among (a) the Parent and one or more Restricted Subsidiaries (including the Issuer) or
(b) Restricted Subsidiaries (including the Issuer); 
 (3) director, officer and employee compensation (including
bonuses) and other benefits (including retirement, health, stock option and other benefit plans and reimbursement or advancement of out-of-pocket expenses, and director’s and officer’s liability insurance) and indemnification arrangements,
in each case approved by the Board of Directors; 
 (4) the granting and performance of registration rights; 
 (5) Restricted Payments which are made in accordance with Section 4.08 and Permitted Investments; 
 (6) any transaction with a joint venture or similar entity which would constitute an Affiliate Transaction solely because the Issuer or a
Restricted Subsidiary owns an equity interest in or otherwise controls such joint venture or similar entity and none of the other holders of equity interest of such entity is an Affiliate of the Parent or any Restricted Subsidiary; 
 (7) (a) any transaction with an Affiliate where the only consideration paid by the Issuer or any Restricted Subsidiary is Qualified Equity
Interests or (b) the issuance or sale of any Qualified Equity Interests. 
 (8) any transaction arising out of agreements
or instruments in existence on the Issue Date (and any amendments thereto, so long as such amendment is not materially adverse to the holders of the Notes, taken as a whole) and any payments made pursuant thereto; 
 (9) any transaction with any Person who is not an Affiliate immediately before the consummation of such transaction that becomes an
Affiliate as a result of such transaction; 
 (10) transactions with Affiliates solely in their capacity as holders of
Indebtedness or Capital Stock of the Parent or any of its Subsidiaries, where such Affiliates receive the same consideration as non-Affiliates in such transaction; and 
 (11) transactions pursuant to, in connection with, or contemplated by the Purchase Agreement. 
  

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 SECTION 4.11. Limitations on Liens. 
 The Parent shall not, and shall not permit any Restricted Subsidiary (including the Issuer) to, directly or indirectly, create, incur, assume or permit or suffer to exist any Lien (other than Permitted Liens) of any
nature whatsoever against any assets of the Parent or any Restricted Subsidiary (including the Issuer) (including Equity Interests of a Restricted Subsidiary), whether owned at the Initial Issue Date or thereafter acquired, which Lien secures
Indebtedness, unless contemporaneously therewith: 
 (1) in the case of any Lien securing an obligation that ranks pari
passu with the Notes or a Note Guarantee, effective provision is made to secure the Notes or such Note Guarantee, as the case may be, at least equally and ratably with or prior to such obligation with a Lien on the same collateral; and

 (2) in the case of any Lien securing an obligation that is subordinated in right of payment to the Notes or a Note
Guarantee, effective provision is made to secure the Notes or such Note Guarantee, as the case may be, with a Lien on the same collateral that is prior to the Lien securing such subordinated obligation, 
 in each case, for so long as such obligation is secured by such Lien. In the event holders are no longer entitled to such a Lien, the Lien shall be released without any
further action by the holders of the Notes. 
 SECTION 4.12. Conduct of Business. 
 The Parent shall not, and shall not permit any Restricted Subsidiary (including the Issuer) to, engage in any business other than a Permitted Business.

 SECTION 4.13. Additional Note Guarantees. 
 If, after the Initial Issue Date, (a) the Parent or any Restricted Subsidiary (including the Issuer) shall acquire or create another Subsidiary (other than a Foreign Subsidiary or a Subsidiary that has been designated an Unrestricted
Subsidiary or an Immaterial Subsidiary), (b) any Unrestricted Subsidiary is Redesignated a Restricted Subsidiary or (c) any Foreign Subsidiary or Immaterial Subsidiary guarantees any Indebtedness of the Issuer or the Parent (other than
pursuant to paragraph 1 of the definition of Permitted Indebtedness), then, in each such case, the Parent and the Issuer shall cause such Restricted Subsidiary to: 
 (1) execute and deliver to the Trustee (a) a supplemental indenture in form and substance reasonably satisfactory to the Trustee
pursuant to which such Restricted Subsidiary shall unconditionally guarantee all of the Issuer’s obligations under the Notes and this Indenture and (b) a notation of guarantee in respect of its Note Guarantee; and 
 (2) deliver to the Trustee one or more Opinions of Counsel that such supplemental indenture (a) has been duly authorized, executed
and delivered by such Restricted Subsidiary and (b) constitutes a valid and legally binding obligation of such Restricted Subsidiary in accordance with its terms. 
 SECTION 4.14. Dividends and Other Payment Restrictions Affecting Restricted Subsidiaries. 
 The Parent
shall not, and shall not permit any Restricted Subsidiary (including the Issuer) to, directly or indirectly, create or otherwise cause or permit to exist or become effective any consensual encumbrance or consensual restriction on the ability of any
Restricted Subsidiary (including the Issuer) to: 
 (a) pay dividends or make any other distributions on or in respect of its
Equity Interests; 
 (b) make loans or advances or pay any Indebtedness or other obligation owed to the Parent or any other
Restricted Subsidiary (including the Issuer); or 
  

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 (c) transfer any of its assets to the Parent or any other Restricted Subsidiary
(including the Issuer); 
 except for: 
 (1) encumbrances or restrictions existing under or by reason of applicable law, regulation or order; 
 (2)
encumbrances or restrictions existing under this Indenture, the Notes and the Note Guarantees; 
 (3) non-assignment or
subletting provisions of any contract or any lease entered into in the ordinary course of business; 
 (4) restrictions
relating to any Lien permitted under this Indenture that affects only Property subject to such Lien; 
 (5) restrictions
imposed on assets to be sold under any agreement to sell assets (including capital stock) permitted under this Indenture to any Person pending the closing of such sale; 
 (6) any instrument governing Acquired Indebtedness, which encumbrance or restriction is not applicable to any Person, or the properties or
assets of any Person, other than the Person or the properties or assets of the Person so acquired; 
 (7) any other agreement
governing Indebtedness entered into after the Initial Issue Date that contains encumbrances and restrictions that are not in the good faith and reasonable judgment of the Parent’s or the Issuer’s Board of Directors, materially more
restrictive, taken as a whole, with respect to any Restricted Subsidiary than those in effect on the Initial Issue Date with respect to that Restricted Subsidiary pursuant to agreements in effect on the Initial Issue Date; 
 (8) customary provisions in partnership agreements, limited liability company organizational governance documents, joint venture
agreements and other similar agreements entered into in the ordinary course of business; 
 (9) Purchase Money Indebtedness
incurred in compliance with Section 4.06 that impose restrictions of the nature described in clause (c) above on the acquired assets financed by such Purchase Money Indebtedness; 
 (10) restrictions on cash or other deposits or net worth imposed by suppliers or landlords under contracts entered into in the ordinary
course of business; 
 (11) encumbrances or restrictions contained in Indebtedness permitted to be incurred under this
Indenture; provided that any such encumbrances or restrictions do not, in the good faith and reasonable judgment of the Parent’s or the Issuer’s Board of Directors, materially impair the Parent’s or the Issuer’s ability to
make payment on the Notes when due; 
  

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 (12) encumbrances on property at the time such property was acquired by the Parent, the
Issuer or any Restricted Subsidiary, so long as such restriction relates solely to the property so acquired; 
 (13)
encumbrances or restrictions existing under agreements existing on the Initial Issue Date and as in effect on that date; and 
 (14) any encumbrances or restrictions imposed by any amendments, restatements, renewals, replacements, refundings or refinancings of the contracts, instruments or obligations referred to in clauses (1) through (13) above or any
amendments, restatements, renewals, replacements, refundings or refinancings thereof; provided that such amendments, restatements, renewals, replacements, refundings or refinancings are not, in the good faith and reasonable judgment of the
Parent’s or the Issuer’s Board of Directors, materially more restrictive, taken as a whole, with respect to such encumbrances and restrictions than those prior to such amendment, restatement, renewal, replacement, refunding or refinancing.

 SECTION 4.15. Limitations on Designation of Unrestricted Subsidiaries. 
 The Parent and the Issuer may designate any Subsidiary (including any newly formed or newly acquired Subsidiary) of the Parent as an “Unrestricted
Subsidiary” under this Indenture (a “Designation”) only if: 
 (1) no Default shall have occurred
and be continuing at the time of or after giving effect to such Designation; and 
 (2) the Parent or the Issuer would be
permitted to make, at the time of such Designation, (a) a Permitted Investment or (b) an Investment pursuant to the first paragraph of Section 4.08, in either case, in an amount (the “Designation Amount”) equal to the
Fair Market Value of the Parent’s proportionate interest in such Subsidiary on such date. 
 No Subsidiary shall be Designated as an
“Unrestricted Subsidiary” unless such Subsidiary: 
 (1) has no Indebtedness other than Non-Recourse Debt;

 (2) is a Person with respect to which neither the Parent, nor the Issuer nor any Restricted Subsidiary has any direct or
indirect obligation (a) to subscribe for additional Equity Interests or (b) to maintain or preserve the Person’s financial condition or to cause the Person to achieve any specified levels of operating results; and 
 (3) has not guaranteed or otherwise directly or indirectly provided credit support for any Indebtedness of the Issuer or any Restricted
Subsidiary, except for any guarantee given solely to support the pledge by the Issuer or any Restricted Subsidiary of the Equity Interests of such Unrestricted Subsidiary, which guarantee is not recourse to the Issuer or any Restricted Subsidiary.

  

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 The Issuer may redesignate an Unrestricted Subsidiary as a Restricted Subsidiary (a
“Redesignation”) only if: 
 (3) no Default shall have occurred and be continuing at the time of and after
giving effect to such Redesignation; and 
 (4) all Liens, Indebtedness and Investments of such Unrestricted Subsidiary
outstanding immediately following such Redesignation would, if incurred or made at such time, have been permitted to be incurred or made for all purposes of this Indenture. 
 All Designations and Redesignations must be evidenced by resolutions of the Board of Directors of the Parent or the Issuer, delivered to the Trustee,
certifying compliance with the foregoing provisions. 
 SECTION 4.16. Limitations on Sale and Leaseback Transactions. 
 The Parent shall not, and shall not permit any Restricted Subsidiary (including the Issuer) to, directly or indirectly, enter into any Sale and Leaseback
Transaction; provided that the Parent or any Restricted Subsidiary (including the Issuer) may enter into a Sale and Leaseback Transaction if: 
 (1) the Parent or such Restricted Subsidiary (including the Issuer) could have (a) incurred the Indebtedness in the amount of the Attributable Indebtedness attributable to such Sale and Leaseback Transaction
pursuant to Section 4.06 and (b) incurred a Lien to secure such Indebtedness without equally and ratably securing the Notes pursuant to Section 4.11; 
 (2) the gross cash proceeds of such Sale and Leaseback Transaction are at least equal to the Fair Market Value of the asset that is the
subject of such Sale and Leaseback Transaction; and 
 (3) the transfer of assets in such Sale and Leaseback Transaction is
permitted by, and the Issuer or the applicable Restricted Subsidiary applies the proceeds of such transaction in accordance with, Section 4.09. 
 SECTION 4.17. Maintenance of Properties; Compliance with Law. 
 (a) The Parent shall, and shall cause each of its Restricted
Subsidiaries (including the Issuer) to, at all times cause all properties used or useful in the conduct of their business to be maintained and kept in good condition, repair and working order (reasonable wear and tear excepted), and shall cause to
be made all reasonably necessary repairs, renewals, replacements, necessary betterments and necessary improvements thereto, all as in the judgment of the Parent or the Issuer may be reasonably necessary so that the business carried on in connection
therewith may be properly conducted, provided that nothing in this Section shall prevent the Parent, the Issuer or any Restricted Subsidiary from discontinuing the use, operation or maintenance of any of such properties or disposing of any of them,
if such discontinuance or disposal is, in the reasonable judgment of the Parent or the Issuer, desirable in the conduct of the business of the Parent, the Issuer or any Restricted Subsidiary. 
 (b) The Issuer shall, and shall cause each of its Subsidiaries to, comply with all statutes, laws, ordinances or government rules and regulations to
which they are subject, non-compliance with which would materially adversely affect the business, earnings, properties, assets or financial condition of the Parent and its Subsidiaries taken as a whole. 
  

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 SECTION 4.18. Legal Existence. 
 Subject to Article Five, the Parent and the Issuer shall do or cause to be done all things necessary to preserve and keep in full force and effect its legal existence, and the corporate, partnership or other
existence of each Restricted Subsidiary (including the Issuer), in accordance with the respective organizational documents (as the same may be amended from time to time) of each Restricted Subsidiary and the rights (charter and statutory), licenses
and franchises of the Parent and its Restricted Subsidiaries (including the Issuer); provided that the Parent and the Issuer shall not be required to preserve any such right, license or franchise, or the corporate, partnership or other
existence of any of its Restricted Subsidiaries (including the Issuer) if the Board of Directors of the Parent or the Issuer shall determine that the preservation thereof is no longer desirable in the conduct of the business of the Parent and its
Restricted Subsidiaries (including the Issuer), taken as a whole, and that the loss thereof is not adverse in any material respect to the Holders. 
 SECTION
4.19. Change of Control Offer. 
 Upon the occurrence of a Change of Control, unless the Issuer shall have given a notice of redemption
for 100% of the aggregate principal amount of Notes outstanding, the Issuer shall be obligated to make an offer (the “Change of Control Offer”), and shall purchase, on a Business Day (the “Change of Control Payment
Date”) not more than 60 nor less than 30 days following the occurrence of the Change of Control, all of the then outstanding Notes at a purchase price (the “Change of Control Purchase Price”) (a) prior
to the one (1) year anniversary of the Initial Issue Date equal to 100% of the principal amount thereof, plus accrued and unpaid interest, if any, thereon to the Change of Control Payment Date, plus the Applicable Premium and (b) on
and after the one (1) year anniversary of the Initial Issue Date, equal to 101% of the principal amount thereof, plus accrued and unpaid interest, if any, thereon to the Change of Control Payment Date. The Change of Control Offer shall
contain the information required by an Offer to Purchase and shall otherwise meet the requirements of an Offer to Purchase except as otherwise provided to the contrary in this Section 4.19. The Change of Control Offer shall remain open for at
least 20 Business Days and until the close of business on the Change of Control Payment Date. 
 Within 30 days following the
date upon which a Change of Control occurs (the “Change of Control Date”), the Issuer shall send, by first-class mail, a notice to each Holder, with a copy to the Trustee, which notice shall govern the terms of the Change of Control
Offer. The notice to the Holders shall contain all instructions and materials necessary to enable such Holders to tender Notes pursuant to the Change of Control Offer. 
 Any amounts remaining after the purchase of Notes pursuant to a Change of Control Offer shall be returned by the Trustee to the Issuer. 
 The Issuer’s obligation to make a Change of Control Offer shall be satisfied if a third party (including the Parent) makes the Change of Control Offer in the manner and at the times and otherwise in compliance
with the requirements applicable to a Change of Control Offer made by the Issuer and purchases all Notes properly tendered and not withdrawn under the Change of Control Offer. 
 The Issuer shall comply with applicable tender offer rules, including the requirements of Rule 14e l under the Exchange Act and any other applicable
laws and regulations in connection with the purchase of Notes pursuant to a Change of Control Offer. To the extent that the provisions of any securities laws or regulations conflict with the provisions under this Section 4.19, the Issuer shall
comply with the applicable securities laws and regulations and shall not be deemed to have breached its obligations under this Section 4.19 by virtue of this compliance. 
  

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 SECTION 4.20. Trigger Event. 
 If for any period of four consecutive fiscal quarters (each, a “Trigger Event Measuring Period”), beginning with the fiscal quarter ending December 31, 2010, Net Indebtedness of the Parent and
the Restricted Subsidiaries (including the Issuer) is greater than five times Consolidated Cash Flow of the Parent and the Restricted Subsidiaries (including the Issuer) for such Trigger Event Measuring Period (a “Trigger Event”),
then not later than 50 days after the end of such Trigger Event Measuring Period (or 95 days in the case of a Trigger Event Measuring Period ending with the fourth quarter of a fiscal year) (the “Trigger Event Offer Date”), the
Issuer shall be obligated to make an Offer to Purchase all of the then outstanding Notes, and any such repurchase pursuant to this Section 4.20 shall be made on a Business Day (the “Trigger Event Payment Date”) not more than 60
nor less than 30 days following the Trigger Event Offer Date, at a purchase price equal to 100% of the principal amount of the Notes to be repurchased plus accrued and unpaid interest, if any, to the Trigger Event Payment Date. In the event an
Annual Report or Quarterly Report, as applicable, is not filed on or before the Trigger Event Offer Date with respect to any Trigger Event Measuring Period, then, on or before the Trigger Event Offer Date, (i) for purposes of determining
whether a Trigger Event has occurred for any such Trigger Event Measuring Period, Net Indebtedness and Consolidated Cash Flow will be calculated and based on internally available information of the Parent or the Issuer on and for the applicable date
and periods, which shall be provided to a Holder upon its request and (ii) on or before the Trigger Event Offer Date, the Parent shall publicly disclose whether or not a Trigger Event has occurred with respect to the applicable Trigger Event
Measuring Period. 
 ARTICLE FIVE 
 SUCCESSOR CORPORATION 
 SECTION 5.01. Limitations on Mergers, Consolidations, Etc. The Issuer shall not, directly or
indirectly, in a single transaction or a series of related transactions, (a) consolidate or merge with or into another Person, or sell, lease, transfer, convey or otherwise dispose of or assign all or substantially all of the assets of the
Issuer or the Issuer and the Restricted Subsidiaries (taken as a whole) or (b) adopt a Plan of Liquidation unless, in either case: 
 (1) either: 
 (a) the Issuer will be the surviving or continuing Person; or 
 (b) the Person formed by or surviving such consolidation or merger or to which such sale, lease, conveyance or other disposition shall be
made (or, in the case of a Plan of Liquidation, any Person to which assets are transferred) (collectively, the “Successor”) is a corporation, limited liability company or limited partnership organized and existing under the laws of
any State of the United States of America, the District of Columbia and the Successor expressly assumes, by agreements in form and substance reasonably satisfactory to the Trustee, all of the obligations of the Issuer under the Notes and this
Indenture; 
 (2) immediately prior to and immediately after giving effect to such transaction and the assumption of the
obligations as set forth in clause (1)(b) above and the incurrence of any Indebtedness to be incurred in connection therewith, and the use of any net proceeds therefrom on a pro forma basis, no Default shall have occurred and be continuing; and

  

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 (3) immediately after and giving effect to such transaction and the assumption of the
obligations set forth in clause (1)(b) above and the incurrence of any Indebtedness to be incurred in connection therewith, and the use of any net proceeds therefrom on a pro forma basis, (a) the Consolidated Net Worth of the Issuer or the
Successor, as the case may be, would be at least equal to the Consolidated Net Worth of the Issuer immediately prior to such transaction or (b) the Issuer or the Successor, as the case may be, could incur $1.00 of additional Indebtedness
pursuant to the Incurrence Leverage Ratio. 
 For purposes of this Section 5.01, any Indebtedness of the Successor which was not
Indebtedness of the Issuer immediately prior to the transaction shall be deemed to have been incurred in connection with such transaction. 
 Except as provided in Section 10.04, neither Parent nor any Guarantor may consolidate with or merge with or into another Person, unless: 
 (A) either: 
 (i) the Parent or such Guarantor will be the surviving or continuing Person; or

 (ii) the Person formed by or surviving any such consolidation or merger is the Parent or another Guarantor or assumes, by
agreements in form and substance reasonably satisfactory to the Trustee, all of the obligations of the Parent or such Guarantor under the Note Guarantee of such Guarantor and this Indenture; and 
 (B) immediately after giving effect to such transaction, no Default shall have occurred and be continuing. 
 For purposes of the foregoing, the transfer (by lease, assignment, sale or otherwise, in a single transaction or series of transactions) of all or
substantially all of the properties or assets of one or more Restricted Subsidiaries, the Equity Interests of which constitute all or substantially all of the properties and assets of the Issuer, will be deemed to be the transfer of all or
substantially all of the properties and assets of the Issuer. 
 Upon any consolidation, combination or merger of the Parent, the Issuer or a
Guarantor, or any transfer of all or substantially all of the assets of the Parent or the Issuer in accordance with the foregoing, in which the Issuer or such Guarantor is not the continuing obligor under the Notes or its Note Guarantee, the
surviving entity formed by such consolidation or into which the Parent, the Issuer or such Guarantor is merged or the Person to which the conveyance, lease or transfer is made will succeed to, and be substituted for, and may exercise every right and
power of, the Parent, the Issuer or such Guarantor under this Indenture, the Notes and the Note Guarantees with the same effect as if such surviving entity had been named therein as the Parent, the Issuer or such Guarantor and, except in the case of
a lease, the Parent, the Issuer or such Guarantor, as the case may be, will be released from the obligation to pay the principal of and interest on the Notes or in respect of its Note Guarantee, as the case may be, and all of the Parents, the
Issuer’s or such Guarantor’s other obligations and covenants under the Notes, this Indenture and its Note Guarantee, if applicable. 
 The foregoing provisions (other than clause (B)) shall not apply to any transaction or series of transactions which constitute an Asset Sale if Parent has complied with the covenant described under Section 4.09. 
  

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 Notwithstanding the foregoing, (1) any Restricted Subsidiary may consolidate with, merge with or
into or convey, transfer or lease, in one transaction or a series of transactions, all or substantially all of its assets to the Parent, the Issuer or another Restricted Subsidiary and (2) the Parent, the Issuer or any Restricted Subsidiary may
merge with and into the Target, or vice versa, provided that the provisions of (A)(ii) above will still be required to be satisfied. 
 SECTION 5.02.
Successor Person Substituted. 
 Upon any consolidation or merger, or any transfer of all or substantially all of the assets of the
Issuer or any Restricted Subsidiary in accordance with Section 5.01, the successor entity formed by such consolidation or into which the Issuer 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 Issuer or such Restricted Subsidiary under this Indenture with the same effect as if such successor entity had been named as the Issuer or such Restricted Subsidiary herein, and thereafter the predecessor
entity shall be relieved of all obligations and covenants under this Indenture and the Notes. 
 ARTICLE SIX 
 DEFAULTS AND REMEDIES 
 SECTION 6.01. Events of
Default. 
 Each of the following shall be an “Event of Default:” 
 (1) failure by the Issuer to pay interest on any of the Notes when it becomes due and payable and the continuance of any such failure
for 30 days; 
 (2) failure by the Issuer to pay to Holders the principal on or any other amount (other than
interest) in respect of any of the Notes when it becomes due and payable, whether at stated maturity, upon redemption, upon purchase, upon acceleration or otherwise, including pursuant to any Change of Control Offer or any offer to purchase in
connection with an Asset Sale or Trigger Event; 
 (3) failure by the Issuer to comply with Section 5.01 or in respect of
its obligations to make a Change of Control Offer, or an offer to redeem or repurchase the Notes, if required, upon an Asset Sale or Trigger Event; 
 (4) failure by Parent or the Issuer to comply with any other agreement or covenant in this Indenture and continuance of this failure for 45 days (other than Section 4.02 which shall be 60 days) after
notice of the failure has been given to the Issuer by the Trustee or by the Holders of at least 25% of the aggregate principal amount of the Notes then outstanding; 
 (5) default under any mortgage, indenture or other instrument or agreement under which there may be issued or by which there may be
secured or evidenced Indebtedness of the Issuer or any Restricted Subsidiary, whether such Indebtedness now exists or is incurred after the Initial Issue Date, which default: 
 (a) is caused by a failure to pay at final maturity principal on such Indebtedness within the applicable express grace period and any
extensions thereof, or 
  

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 (b) that has resulted in the acceleration of such Indebtedness prior to its express final
maturity, and 
 in each case, the principal amount of such Indebtedness, together with any other Indebtedness with respect to which an event described in
clause (a) or (b) has occurred and is continuing, aggregates $20.0 million or more; 
 (6) one or more
judgments or orders that exceed $20.0 million in the aggregate (net of amounts covered by insurance or bonded) for the payment of money have been entered by a court or courts of competent jurisdiction against the Parent, the Issuer or any
Restricted Subsidiary and such judgment or judgments have not been satisfied, discharged, bonded (by providing insurance, letters of credit or other financial assurance), stayed or stayed pending appeal, annulled or rescinded
within 60 days of being entered; 
 (7) the Issuer, the Parent or any Significant Subsidiary pursuant to or within
the meaning of any Bankruptcy Law: 
 (a) commences a voluntary case, 
 (b) consents to the entry of an order for relief against it in an involuntary case, 
 (c) consents to the appointment of a Custodian of it or for all or substantially all of its assets, or 
 (d) makes a general assignment for the benefit of its creditors; 
 (8) a court of competent jurisdiction enters an order or decree under any Bankruptcy Law that: 
 (a) is for relief against the Issuer, the Parent or any Significant Subsidiary as debtor in an involuntary case, 
 (b) appoints a Custodian of the Issuer, the Parent or any Significant Subsidiary or a Custodian for all or substantially all of the assets
of the Issuer or any Significant Subsidiary, or 
 (c) orders the liquidation of the Issuer, the Parent or any Significant
Subsidiary, 
 and the order or decree remains unstayed and in effect for 60 days; or 
 (9) any Note Guarantee of any Significant Subsidiary or the Parent ceases to be in full force and effect (other than in accordance with
the terms of such Note Guarantee and this Indenture) or is declared null and void and unenforceable or found to be invalid or any Guarantor denies its liability under its Note Guarantee (other than by reason of release of a Guarantor from its Note
Guarantee in accordance with the terms of this Indenture and the Note Guarantee). 
  

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 SECTION 6.02. Acceleration and Default Rate. 
 If an Event of Default (other than an Event of Default specified in clause (7) or (8) of Section 6.01), shall have occurred and be
continuing, the Trustee, by written notice to the Issuer, or the Holders of at least 25% in aggregate principal amount of the Notes then outstanding by written notice to the Issuer and the Trustee, may declare all amounts owing under the Notes
to be due and payable immediately. Upon such declaration of acceleration, the aggregate principal of and accrued and unpaid interest on the outstanding Notes, plus the Default Rate, shall immediately become due and payable; provided,
however, that after such acceleration, but before a judgment or decree based on such acceleration, the Holders of a majority in aggregate principal amount of such outstanding Notes may rescind and annul such acceleration if (a) the
rescission would not conflict with any order or decree, (b) the Issuer has paid or deposited with the Trustee a sum sufficient to pay all principal, premium or interest (including additional interest) that has become due otherwise than by such
declaration of acceleration, all sums paid or advanced by the Trustee hereunder and 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 and (c) all Events of Default, other than the nonpayment of accelerated principal and interest, have been cured or waived as provided in this Indenture. If an Event of Default specified in clause (7) or (8) of
Section 6.01 occurs, all outstanding Notes shall become due and payable without any further action or notice. No such rescission shall affect any subsequent default or impair any right consequent thereon. 
 SECTION 6.03. Other Remedies. 
 If an Event of Default
occurs and is continuing, the Trustee may pursue any available remedy by proceeding at law or in equity to collect the payment of principal of, or premium, if any, and interest on the Notes or to enforce the performance of any provision of the Notes
or this Indenture and may take any necessary action requested of it as Trustee to settle, compromise, adjust or otherwise conclude any proceedings to which it is a party. 
 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. No remedy is exclusive of any other remedy. All available remedies are cumulative. Any costs associated with
actions taken by the Trustee under this Section 6.03 shall be reimbursed to the Trustee by the Issuer. 
 SECTION 6.04. Waiver of Past Defaults and
Events of Default. 
 Subject to Sections 6.02, 6.08 and 8.02, the Holders of a majority in aggregate principal amount of the Notes then
outstanding have the right to waive any existing Default or compliance with any provision of this Indenture or the Notes, other than (a) a Default or Event of Default in the payment of the principal of, or premium, if any, or interest or
additional interest on, any Note, or in the payment of the Change of Control Purchase Price (or accrued and unpaid interest, if any, payable as herein provided, upon repurchase upon Change of Control), (b) a Default or Event of Default
described in clause (7) or (8) of Section 6.01, or (c) any Default or Event of Default in respect of any provision of this Indenture or the Notes which, under Section 8.02, cannot be modified or amended without the consent
of the Holder of each outstanding Notes affected. Upon any such waiver, such Default shall cease to exist, and any Event of Default arising therefrom shall be deemed to have been cured for every purpose of this Indenture; but no such waiver shall
extend to any subsequent or other Default or impair any right consequent thereto. 
  

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 SECTION 6.05. Control by Majority. 
 The Holders of a majority in aggregate principal amount of the Notes then outstanding may 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 by this Indenture. The Trustee, however, may refuse to follow any direction that conflicts with law or this Indenture or that the Trustee determines may be unduly prejudicial to the rights of another Holder not
taking part in such direction, and the Trustee shall have the right to decline to follow any such direction if the Trustee, being advised by counsel, determines that the action so directed may not lawfully be taken or if the Trustee in good faith
shall, by a Responsible Officer, determine that the proceedings so directed may result in costs and expenses of the Trustee for which it has no source of payment or recovery or involve it in personal liability; provided that the Trustee may
take any other action deemed proper by the Trustee which is not inconsistent with such direction. 
 SECTION 6.06. Limitation on Suits. 
 No Holder will have any right to institute any proceeding with respect to this Indenture or for any remedy thereunder, unless the Trustee: 
 (1) has failed to act for a period of 60 days after receiving written notice of a continuing Event of Default by such Holder and
a request to act by Holders of at least 25% in aggregate principal amount of Notes outstanding; 
 (2) has been offered
indemnity satisfactory to it in its reasonable judgment; and 
 (3) has not received from the Holders of a majority in
aggregate principal amount of the outstanding Notes a direction inconsistent with such request. 
 However, such limitations do not apply to a suit
instituted by a Holder of any Note for enforcement of payment of the principal of or interest on such Note on or after the due date therefor (after giving effect to the grace period specified in clause (1) of Section 6.01). 
 SECTION 6.07. No Personal Liability of Directors, Officers, Employees and Stockholders. 
 No director, officer, employee, incorporator or stockholder of the Issuer will have any liability for any obligations of the Issuer under the Notes or
this Indenture or of any Guarantor under its Note Guarantee or this Indenture 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. The
waiver and release are part of the consideration for issuance of the Notes and the Note Guarantees. 
 SECTION 6.08. Rights of Holders To Receive
Payment. 
 Notwithstanding any other provision of this Indenture, the right of any Holder of a Note to receive payment of principal of,
or premium, if any, and interest of the Note on or after the respective due dates expressed in the Note, or to bring suit for the enforcement of any such payment on or after such respective dates, is absolute and unconditional and shall not be
impaired or affected without the consent of the Holder. 
 SECTION 6.09. Collection Suit by Trustee. 
 If an Event of Default in payment of principal, premium or interest specified in Section 6.01(1) or (2) occurs and is continuing, the Trustee
may recover judgment in its own name and as trustee of an express trust against the Issuer or any Guarantor (or any other obligor on the Notes) for the whole amount of unpaid principal and accrued interest remaining unpaid, together with interest on
overdue principal and, to the extent that payment of such interest is lawful, interest on overdue installments of interest, in each case at the rate set forth in the Notes. 
  

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 SECTION 6.10. Trustee May File Proofs of Claim. 
 The Trustee may file such proofs of claim and other papers or documents as may be necessary or advisable in order to have the claims of the Trustee and
the Holders allowed in any judicial proceedings relative to the Issuer or any Guarantor (or any other obligor upon the Notes), its creditors or its property and shall be entitled and empowered to collect and receive any monies or other property
payable or deliverable on any such claims and to distribute the same after deduction of its charges and expenses to the extent that any such charges and expenses are not paid out of the estate in any such proceedings 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. 
 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 or reorganization, arrangement, adjustment or composition affecting the
Notes or the rights of any Holder thereof, or to authorize the Trustee to vote in respect of the claim of any Holder in any such proceedings. 
 SECTION
6.11. Priorities. 
 If the Trustee collects any money pursuant to this Article Six, it shall pay out the money in the following
order: 
 FIRST: to the Trustee for amounts due under Section 7.07; 
 SECOND: to Holders for amounts due and unpaid on the Notes for principal, premium, if any, and interest as to each, ratably, without preference or
priority of any kind, according to the amounts due and payable on the Notes; and 
 THIRD: to the Issuer or, to the extent the Trustee
collects any amount directly from any Guarantor, to such Guarantor. 
 The Trustee may fix a record date and payment date for any payment to
Holders pursuant to this Section 6.11. 
 SECTION 6.12. Undertaking for Costs. 
 In any suit for the enforcement of any right or remedy under this Indenture or in any suit against the Trustee for any action taken or omitted by it as
Trustee, a court in its discretion may require the filing by any party litigant in the suit of an undertaking to pay the costs of the suit, and the court in its discretion may assess reasonable costs, including reasonable attorneys’ fees,
against any party litigant in the suit, having due regard to the merits and good faith of the claims or defenses made by the party litigant. This Section 6.12 does not apply to a suit by the Trustee, a suit by a Holder pursuant to
Section 6.08 or a suit by Holders of more than 10% in principal amount of the Notes then outstanding. 
  

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 SECTION 6.13. Restoration of Rights and Remedies. 
 If the Trustee or any Holder has instituted any proceeding to enforce any right or remedy under this Indenture and such proceeding has been discontinued
or abandoned for any reason, or has been determined adversely to the Trustee or to such Holder, then and in every case, subject to any determination in such proceeding, the Issuer, the Guarantors, the Trustee and the Holders shall be restored
severally and respectively to their former positions hereunder and thereafter all rights and remedies of the Trustee and the Holders shall continue as though no such proceeding had been instituted. 
 ARTICLE SEVEN 
 TRUSTEE 
 SECTION 7.01. Duties of Trustee. 
 (a) If an Event of
Default actually known to a Responsible Officer of the Trustee 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 their exercise as a
prudent person would exercise or use under the same circumstances in the conduct of his or her own affairs. 
 (b) Except during the
continuance of an Event of Default: 
 (1) The Trustee need perform only those duties that are specifically set forth in this
Indenture and no others. 
 (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, but, in the case of any such certificates or opinions which by any
provision hereof are specifically required to be furnished to the Trustee, the Trustee shall be under a duty to examine the same to determine whether or not they conform on their face 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 liability
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, unless it is proved that the Trustee was negligent in ascertaining the pertinent facts. 
 (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 the terms hereof. 
 (4) No provision of this Indenture shall require the Trustee to expend or risk its own funds or otherwise incur any financial liability in
the performance of any of its rights, powers or duties if it shall have reasonable grounds for believing that repayment of such funds or adequate indemnity satisfactory to it against such risk or liability is not reasonably assured to it.

  

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 (d) Whether or not therein expressly so provided, paragraphs (a), (b), (c) and (e) of this
Section 7.01 shall govern every provision of this Indenture that in any way relates to the Trustee. 
 (e) The Trustee may refuse to
perform any duty or exercise any right or power unless it receives indemnity satisfactory to it in its sole discretion against any loss, liability, expense or fee. 
 (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 Issuer and the Parent. Money held in trust by the Trustee need not be segregated from
other funds except to the extent required by the law. 
 (g) Every provision of this Indenture relating to the conduct or affecting the
liability of or affording protection to the Trustee shall be subject to the provisions of this Section 7.01 and to the provision of the TIA. 
 SECTION
7.02. Rights of Trustee. 
 Subject to Section 7.01: 
 (1) The Trustee may rely on any document reasonably believed by it to be genuine and to have been signed or presented by the proper
person. The Trustee need not investigate any fact or matter stated in the document. 
 (2) Before the Trustee acts or refrains
from acting, it may require an Officers’ Certificate or an Opinion of Counsel, or both, which shall conform to the provisions of Section 11.05. The Trustee shall be protected and shall not be liable for any action it takes or omits to take
in good faith in reliance on such certificate or opinion. 
 (3) The Trustee may act through its attorneys and agents and
shall not be responsible for the misconduct or negligence of any agent appointed by it with due care. 
 (4) The Trustee shall
not be liable for any action it takes or omits to take in good faith which it reasonably believes to be authorized or within its rights or powers; provided that the Trustee’s conduct does not constitute negligence or willful misconduct.

 (5) The Trustee may consult with counsel of its selection, and the advice or opinion of such counsel as to matters of law
shall be full and complete authorization and protection from liability in respect of any action taken, omitted or suffered by it hereunder in good faith and in accordance with the advice or opinion of such counsel. 
 (6) The Trustee shall not be deemed to have knowledge of any Default or Event of Default except (i) any Event of Default occurring
pursuant to Section 6.01(1) or 6.01(2) or (ii) any Event of Default of which the Trustee shall have received written notification or otherwise obtained actual knowledge. In the absence of such notice, the Trustee may conclusively
assume there is no Default except as aforesaid. 
 (7) The Trustee shall be under no obligation to exercise any of the rights
or powers vested in it by this Indenture, and may refuse to perform any duty or exercise any such rights or powers, unless it shall have been offered reasonable security or indemnity satisfactory to it against the cost, expenses and liabilities
which may be incurred by it in connection with such exercise of its rights or powers. 
  

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 (8) The Trustee shall not be bound to make any investigation into the facts or matters
stated in any resolution, certificate (including any Officers’ Certificate), statement, instrument, opinion (including any Opinion of Counsel), notice, request, direction, consent, order, bond, debenture, note, other evidence of Indebtedness or
other paper or document, but the Trustee, in its discretion, may make such further inquiry or investigation into such facts or matters as it may see fit and, if the Trustee shall determine to make such further inquiry or investigation, it shall be
entitled, upon reasonable notice to the Issuer, to examine the books, records, and premises of the Issuer, personally or by agent or attorney, at the sole cost of the Issuer. Except with respect to Sections 4.01, 4.02 (subject to
paragraph 12 below) and 4.04, the Trustee shall have no duty to inquire as to the performance of the Issuer’s and the Guarantors’ covenants set forth herein. 
 (9) The Trustee shall not be required to give any bond or surety in respect of the performance of its powers and duties hereunder.

 (10) The permissive rights of the Trustee to do things enumerated in this Indenture shall not be construed as duties
hereunder. 
 (11) 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. 
 (12) Delivery of reports, information and documents to the Trustee under Section 4.02 is for informational purposes only and the
Trustee’s receipt of the foregoing shall not constitute constructive notice of any information contained therein, including the Issuer’s compliance with any of its covenants hereunder (as which the Trustee is entitled to rely exclusively
on the Officers’ Certificate). 
 (13) In no event shall the Trustee be responsible or liable for special, indirect, 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. 
 (14) The Trustee may request that the Issuer deliver a certificate setting forth the names of individuals and/or titles of officers
authorized at such time to take specified actions pursuant to this Indenture. 
 (15) 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. 
  

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 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 make loans to, accept deposits from, perform services
for or otherwise deal with either the Issuer or any Guarantor, or any Affiliates thereof, with the same rights it would have if it were not Trustee. Any Agent may do the same with like rights. The Trustee, however, shall be subject to
Sections 7.10 and 7.11. 
 SECTION 7.04. Trustee’s Disclaimer. 
 The Trustee shall not be responsible for and makes no representation as to the validity or adequacy of this Indenture or the Notes or any Guarantee, it
shall not be accountable for the Issuer’s or any Guarantor’s use of the proceeds from the sale of Notes or any money paid to the Issuer or any Guarantor pursuant to the terms of this Indenture and it shall not be responsible for the use or
application of money received by any Paying Agent other than the Trustee. The Trustee shall not be responsible for any statement in the Notes, Note Guarantee, this Indenture or any other document in connection with the sale of the Notes other than
its certificate of authentication. 
 SECTION 7.05. Notice of Defaults. 
 The Trustee shall, within 30 days after the occurrence of any Default with respect to the Notes, give the Holders notice of all uncured Defaults thereunder known to it; provided, however, that,
except in the case of an Event of Default in payment with respect to the Notes or a Default in complying with Section 5.01, the Trustee shall be protected in withholding such notice if and so long as a committee of its responsible officers in
good faith determines that the withholding of such notice is in the interests of the Holders. 
 SECTION 7.06. Reports by Trustee to Holders.

 If required by TIA § 313(a), within 60 days after May 15 of any year, commencing May 15, 2009, the Trustee shall
mail to each Holder a brief report dated as of such May 15 that complies with TIA § 313(a). The Trustee also shall comply with TIA § 313(b)(2). The Trustee shall also transmit by mail all reports as required by TIA § 313(c) and
TIA § 313(d). 
 Reports pursuant to this Section 7.06 shall be transmitted by mail: 
 (1) to all Holders of Notes, as the names and addresses of such Holders appear on the Registrar’s books; and 
 (2) to such Holders of Notes as have, within the two years preceding such transmission, filed their names and addresses with the Trustee
for that purpose. 
 A copy of each report at the time of its mailing to Holders shall be filed with the SEC and each stock exchange on which
the Notes are listed. The Issuer shall promptly notify the Trustee, and in any event within 10 Business Days, when the Notes are listed on any stock exchange and of any delisting thereof. 
  

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 SECTION 7.07. Compensation and Indemnity. 
 The Issuer and the Guarantors shall pay to the Trustee and Agents from time to time reasonable compensation for their services hereunder (which
compensation shall not be limited by any provision of law in regard to the compensation of a trustee of an express trust). The Issuer and the Guarantors shall reimburse the Trustee and Agents upon request for all out-of-pocket disbursements,
expenses and advances incurred or made by them in connection with their duties under this Indenture, including the reasonable compensation, disbursements and expenses of the Trustee’s agents and counsel. 
 The Issuer and the Guarantors shall jointly and severally indemnify each of the Trustee and any predecessor Trustee and each of the Agents for, and hold
each of them harmless against, any and all loss, damage, claim, liability or expense, including without limitation taxes (other than taxes based on the income of the Trustee or such Agent) and reasonable attorneys’ fees and expenses incurred by
each of them in connection with the acceptance or performance of its duties under this Indenture including the reasonable costs and expenses of defending itself against any claim or liability in connection with the exercise or performance of any of
its powers or duties hereunder (including, without limitation, settlement costs). The Trustee or Agent shall notify the Issuer and the Guarantors in writing promptly of any claim asserted against and received by the Trustee or Agent for which it may
seek indemnity. However, the failure by the Trustee or Agent to so notify the Issuer and the Guarantors shall not relieve the Issuer and Guarantors of their obligations hereunder except to the extent the Issuer and the Guarantors are prejudiced
thereby. 
 Notwithstanding the foregoing, the Issuer and the Guarantors need not reimburse the Trustee for any expense or indemnify it
against any loss or liability determined to have been caused by the Trustee through its own negligence, bad faith or willful misconduct. To secure the payment obligations of the Issuer and the Guarantors in this Section 7.07, the Trustee shall
have a lien prior to the Notes on all money or property held or collected by the Trustee except such money or property held in trust to pay principal of and interest on particular Notes. The obligations of the Issuer and the Guarantors under this
Section 7.07 to compensate and indemnify the Trustee, Agents and each predecessor Trustee and to pay or reimburse the Trustee, Agents and each predecessor Trustee for expenses, disbursements and advances shall survive the resignation or removal
of the Trustee and the satisfaction, discharge or other termination of this Indenture, including any termination or rejection hereof under any Bankruptcy Law. 
 When the Trustee incurs expenses or renders services after an Event of Default specified in Section 6.01(7) or (8) occurs, the expenses and the compensation for the services are intended to constitute
expenses of administration under any Bankruptcy Law. 
 For purposes of this Section 7.07, the term “Trustee” shall
include any trustee appointed pursuant to this Article Seven. 
 SECTION 7.08. Replacement of Trustee. 
 The Trustee may resign by so notifying the Issuer and the Guarantors in writing. The Holders of a majority in principal amount of the outstanding Notes
may remove the Trustee by notifying the Issuer and the removed Trustee in writing and may appoint a successor Trustee with the Issuer’s written consent, which consent shall not be unreasonably withheld. The Issuer may remove the Trustee at its
election if: 
 (1) the Trustee fails to comply with Section 7.10; 
 (2) the Trustee is adjudged a bankrupt or an insolvent; 
 (3) a receiver or other public officer takes charge of the Trustee or its property; or 
  

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 (4) the Trustee otherwise 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 Issuer shall promptly appoint a successor
Trustee. If a Trustee is removed with or without cause, all fees and expenses (including the reasonable fees and expenses of counsel) of the Trustee incurred in the administration of the trust or in performing the duties hereunder shall be paid to
the Trustee. 
 If a successor Trustee does not take office within 60 days after the retiring Trustee resigns or is removed, the
retiring Trustee, the Issuer or the Holders of a majority in principal amount of the outstanding Notes may petition any court of competent jurisdiction for the appointment of a successor Trustee. 
 If the Trustee fails to comply with Section 7.10, any 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 Issuer. Immediately following such delivery, the retiring Trustee shall, subject to its rights and receipt of any amounts due under Section 7.07, transfer all property held by it as Trustee to the successor Trustee, 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. A successor Trustee shall mail notice of its succession to each Holder.
Notwithstanding replacement of the Trustee pursuant to this Section 7.08, the Issuer obligations under Section 7.07 shall continue for the benefit of the retiring Trustee. 
 SECTION 7.09. Successor Trustee by Consolidation, Merger, Etc. 
 If the Trustee consolidates with,
merges or converts into, or transfers all or substantially all of its corporate trust assets to, another entity, subject to Section 7.10, the successor entity without any further act shall be the successor Trustee; provided such entity
shall be otherwise qualified and eligible under this Article Seven. 
 SECTION 7.10. Eligibility; Disqualification. 
 This Indenture shall always have a Trustee who satisfies the requirements of TIA §§ 310(a)(1) and (2) in every respect. The Trustee
(together with its corporate parent) shall have a combined capital and surplus of at least $100,000,000 as set forth in the most recent applicable published annual report of condition. The Trustee shall comply with TIA § 310(b), including the
provision in § 310(b)(1). 
 SECTION 7.11. Preferential Collection of Claims Against Issuer. 
 The Trustee shall comply with TIA § 311(a), excluding any creditor relationship listed in TIA § 311(b). A Trustee who has resigned or been
removed shall be subject to TIA § 311(a) to the extent indicated therein. 
 SECTION 7.12. Paying Agents. 
 The Issuer shall cause each Paying Agent other than the Trustee to execute and deliver to it and the Trustee an instrument in which such agent shall agree
with the Trustee, subject to the provisions of this Section 7.12: 
 (A) that it will hold all sums held by it as agent
for the payment of principal of, or premium, if any, or interest on, the Notes (whether such sums have been paid to it by the Issuer or by any obligor on the Notes) in trust for the benefit of Holders or the Trustee; 
  

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 (B) that it will at any time during the continuance of any Event of Default, upon written
request from the Trustee, deliver to the Trustee all sums so held in trust by it together with a full accounting thereof; and 
 (C) that it will give the Trustee written notice within three (3) Business Days of any failure of the Issuer (or by any obligor on the Notes) in the payment of any installment of the principal of, premium, if any, or interest on, the
Notes when the same shall be due and payable. 
 ARTICLE EIGHT 
 AMENDMENTS, SUPPLEMENTS AND WAIVERS 
 SECTION 8.01. Without Consent of Holders. 
 The Issuer and the Trustee may amend, waive or supplement this Indenture, the Note Guarantees or the Notes without prior notice to or consent of any
Holder: 
 (1) to provide for the assumption of the Issuer’s or a Guarantor’s obligations to the Holders pursuant to
Section 5.01; 
 (2) to provide for uncertificated Notes in addition to or in place of certificated Notes; 
 (3) to cure any ambiguity, defect, mistake or inconsistency, so long as the effect thereof is not materially adverse, taken as a whole, to
the Holders; 
 (4) to add Note Guarantees with respect to the Notes or to secure the Notes; 
 (5) to release any Guarantor from any of its obligations under its Note Guarantee or this Indenture (solely to the extent permitted by
this Indenture); 
 (6) to qualify or maintain the qualification of this Indenture under the TIA; or 
 (7) to add to the covenants of the Issuer or a Guarantor for the benefit of the Holders of the Notes or to surrender any right or power
herein conferred upon the Issuer or a Guarantor with respect to the Notes. 
 The Trustee is hereby authorized to join with the Issuer and
the Guarantors in the execution of any supplemental indenture authorized or permitted by the terms of this Indenture and to make any further appropriate agreements and stipulations which may be therein contained, but the Trustee shall not be
obligated to enter into any such supplemental indenture which adversely affects its own rights, duties or immunities under this Indenture. 
  

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 SECTION 8.02. With Consent of Holders. 
 This Indenture or the Notes may be amended with the consent (which may include consents obtained in connection with a tender offer or exchange offer for
Notes) of the Holders of at least a majority in aggregate principal amount of the Notes then outstanding, and any existing Default under, or compliance with any provision of, this Indenture may be waived (other than any continuing Default in the
payment of the principal or interest on the Notes) with the consent (which may include consents obtained in connection with a tender offer or exchange offer for Notes) of the Holders of a majority in aggregate principal amount of the Notes then
outstanding; provided that, without the consent of each Holder affected, no amendment or waiver may: 
 (1) reduce, or
change the maturity of, the principal of any Note; 
 (2) reduce the rate of or extend the time for payment of interest on any
Note; 
 (3) reduce any premium payable upon optional redemption of the Notes or change the date on which any Notes are
subject to redemption (other than provisions relating to the purchase of Notes described in Sections 4.09 and 4.19, except that if a Change of Control, Asset Sale (which requires an offer) or Trigger Event has occurred, no amendment or
other modification of the obligation of the Issuer to make a Change of Control Offer relating to such Change of Control, Asset Sale (which requires an offer) or Trigger Event shall be made without the consent of each Holder of the Notes affected);

 (4) make any Note payable in money or currency other than that stated in the Notes; 
 (5) modify or change any provision of this Indenture or the related definitions to affect the ranking of the Notes or any Note Guarantee
in a manner that adversely affects the Holders; 
 (6) reduce the principal amount of Notes whose Holders must consent to an
amendment, supplement or waiver to this Indenture or the Notes; 
 (7) impair the rights of Holders to receive payments of
principal of or interest on the Notes on or after the due date therefor or to institute suit for the enforcement of any payment on the Notes; 
 (8) release any Guarantor that is a Significant Subsidiary from any of its obligations under its Note Guarantee or this Indenture, except as otherwise permitted by this Indenture; or 
 (9) make any change in this Section 8.02. 
 After an amendment, supplement or waiver under this Section 8.02 becomes effective, the Issuer shall mail to the Holders a notice briefly describing the amendment, supplement or waiver. 
 Upon the written request of the Issuer, accompanied by a Board Resolution authorizing the execution of any such supplemental indenture, and upon the
receipt by the Trustee of evidence reasonably satisfactory to the Trustee of the consent of the Holders as aforesaid and upon receipt by the Trustee of the documents described in Section 8.06, the Trustee shall join with the Issuer and the
Guarantors in the execution of such supplemental indenture unless such supplemental indenture affects the Trustee’s own rights, duties or immunities under this Indenture, in which case the Trustee may, but shall not be obligated to, enter into
such supplemental indenture. 
  

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 It shall not be necessary for the consent of the Holders under this Section to approve the particular
form of any proposed amendment, supplement or waiver, but it shall be sufficient if such consent approves the substance thereof. 
 The
Issuer shall not, and shall not permit any of its Subsidiaries to, directly or indirectly, pay or cause to be paid any consideration to or for the benefit of any Holder of Notes for or as an inducement to any consent, waiver or amendment of any of
their terms or provisions of this Indenture or the Notes unless such consideration is offered to be paid and is paid to all Holders of the Notes that consent, waiver or agree to amend in the time frame set forth in the solicitation documents
relating to such consent, waiver or agreement. 
 SECTION 8.03. Compliance with Trust Indenture Act. 
 Every amendment or supplement to this Indenture or the Notes shall comply with the TIA as then in effect. 
 SECTION 8.04. Revocation and Effect of Consents. 
 Until an amendment, supplement, waiver or other action becomes effective, a consent to it by a Holder of a Note is a continuing consent conclusive and binding upon such Holder and every subsequent Holder of the same Note or portion thereof,
and of any Note issued upon the transfer thereof or in exchange therefor or in place thereof, even if notation of the consent is not made on any such Note. Any such Holder or subsequent Holder, however, may revoke the consent as to his Note or
portion of a Note, if the Trustee receives the written notice of revocation before the date the amendment, supplement, waiver or other action becomes effective. 
 The Issuer may, but shall not be obligated to, fix a record date for the purpose of determining the Holders entitled to consent to any amendment, supplement, or waiver. If a record date is fixed, then, notwithstanding
the preceding paragraph, those Persons who were Holders at such record date (or their duly designated proxies), and only such Persons, shall be entitled to consent to such amendment, supplement, or waiver or to revoke any consent previously given,
whether or not such Persons continue to be Holders after such record date. No such consent shall be valid or effective for more than 120 days after such record date unless the consent of the requisite number of Holders has been obtained.

 After an amendment, supplement, waiver or other action becomes effective, it shall bind every Holder, unless it makes a change described
in any of clauses (1) through (10) of Section 8.02. In that case the amendment, supplement, waiver or other action shall bind each Holder of a Note who has consented to it and every subsequent Holder of a Note or portion of a Note
that evidences the same debt as the consenting Holder’s Note. 
 SECTION 8.05. Notation on or Exchange of Notes. 
 If an amendment, supplement, or waiver changes the terms of a Note, the Trustee (in accordance with the specific written direction of the Issuer) shall
request the Holder of the Note (in accordance with the specific written direction of the Issuer) to deliver it to the Trustee. In such case, the Trustee shall place an appropriate notation on the Note about the changed terms and return it to the
Holder. Alternatively, if the Issuer or the Trustee so determines, the Issuer in exchange for the Note shall issue, the Guarantors shall endorse, and the Trustee shall authenticate a new Note that reflects the changed terms. Failure to make the
appropriate notation or issue a new Note shall not affect the validity and effect of such amendment, supplement or waiver. 
  

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 SECTION 8.06. Trustee To Sign Amendments, Etc. 
 The Trustee shall sign any amendment, supplement or waiver authorized pursuant to this Article Eight if the amendment, supplement or waiver does not
adversely affect the rights, duties, liabilities or immunities of the Trustee. If it does, the Trustee may, but need not, sign it. In signing or refusing to sign such amendment, supplement or waiver the Trustee shall be provided with and, subject to
Section 7.01, shall be fully protected in relying conclusively upon an Officers’ Certificate and an Opinion of Counsel stating, in addition to the matters required by Section 11.04, that such amendment, supplement or waiver is
authorized or permitted by this Indenture and all conditions precedent required hereunder to such amendment, supplement or waiver have been satisfied. 
 ARTICLE NINE 
 DISCHARGE OF INDENTURE; DEFEASANCE 
 SECTION 9.01. Discharge of Indenture. 
 The Issuer may
terminate its obligations and the obligations of the Parent and the Guarantors under the Notes, the Note Guarantees and this Indenture, except the obligations referred to in the last paragraph of this Section 9.01, if the Parent or the Issuer
has paid or caused to be paid all sums payable by it under this Indenture, and 
 (1) all the Notes that have been
authenticated and delivered (except lost, stolen or destroyed Notes which have been replaced or paid and Notes for whose payment money has been deposited in trust or segregated and held in trust by the Issuer and thereafter repaid to the Issuer or
discharged from such trust) have been delivered to the Trustee for cancellation, or 
 (2) 
 (a) all Notes not delivered to the Trustee for cancellation otherwise (i) have become due and payable, (ii) will become due and
payable at the maturity date, within one year or (iii) have been or are to be called for redemption within one year pursuant to paragraph 6 of the Notes, and, in the case of (i), or (ii), or (iii), the Parent or the Issuer has irrevocably
deposited or caused to be deposited with the Trustee as trust funds, in trust solely for the benefit of the Holders, U.S. legal tender, U.S. Government Obligations or a combination thereof, in such amounts as will be sufficient (without
consideration of any reinvestment of interest) to pay and discharge the entire Indebtedness (including all principal and accrued interest) on the Notes not theretofore delivered to the Trustee for cancellation, or 
 (b) the Parent or the Issuer has delivered irrevocable instructions to the Trustee to apply the deposited money toward the payment of the
Notes at maturity or on the date of redemption, as the case may be. 
 In addition, if required by the Trustee, the Parent and the Issuer
must deliver an Officers’ Certificate and an Opinion of Counsel stating that all conditions precedent to the satisfaction and discharge of this Indenture have been complied with. 
  

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 After such delivery, the Trustee shall acknowledge in writing the discharge of the Issuer’s, the
Parent’s and the Guarantors’ obligations under the Notes, the Note Guarantees and this Indenture except for those surviving obligations specified below. 
 Notwithstanding the satisfaction and discharge of this Indenture, the obligations of the Issuer in Sections 7.07, 9.07 and 9.08 shall survive such satisfaction and discharge. 
 SECTION 9.02. Legal Defeasance. 
 The Issuer may at
its option, by Board Resolution of the Board of Directors of the Issuer, be discharged from its obligations with respect to the Notes and the Guarantors discharged from their obligations under the Note Guarantees on the date the conditions set forth
in Section 9.04 are satisfied (hereinafter, “Legal Defeasance”). For this purpose, such Legal Defeasance means that the Issuer shall be deemed to have paid and discharged the entire indebtedness represented by the Notes and to
have satisfied all its other obligations under such Notes and this Indenture insofar as such Notes are concerned (and the Trustee, at the expense of the Issuer, shall, subject to Section 9.06, execute instruments in form and substance
reasonably satisfactory to the Trustee and Issuer acknowledging the same), except for the following, which shall survive until otherwise terminated or discharged hereunder: (A) the rights of Holders of outstanding Notes to receive payments in
respect of the principal of and interest on such Notes when such payments are due solely from the trust funds described in Section 9.04 and as more fully set forth in such Section, (B) the Issuer’s obligations with respect to such
Notes under Sections 2.03, 2.04, 2.05, 2.06, 2.07, 2.08, 2.11 and 4.18, (C) the rights, powers, trusts, duties, and immunities of the Trustee hereunder (including claims of, or payments to, the Trustee under or pursuant to
Section 7.07) and (D) this Article Nine. Subject to compliance with this Article Nine, the Issuer may exercise its option under this Section 9.02 with respect to the Notes notwithstanding the prior exercise of its option
under Section 9.03 with respect to the Notes. 
 SECTION 9.03. Covenant Defeasance. 
 At the option of the Issuer, pursuant to a Board Resolution of the Board of Directors of the Issuer, (x) the Issuer and the Guarantors shall be
released from their respective obligations under Sections 4.02 (except for obligations mandated by the TIA), 4.05 through 4.17, inclusive, 4.19 and clause (3) of the first paragraph of Section 5.01 and
(y) Section 6.01(4), (5), (6) and (9) shall no longer apply with respect to the outstanding Notes on and after the date the conditions set forth in Section 9.04 are satisfied (hereinafter, “Covenant
Defeasance”). For this purpose, such Covenant Defeasance means that the Issuer and the Guarantors may omit to comply with and shall have no liability in respect of any term, condition or limitation set forth in any such specified Section or
portion thereof, whether directly or indirectly by reason of any reference elsewhere herein to any such specified Section or portion thereof or by reason of any reference in any such specified Section or portion thereof to any other provision herein
or in any other document, but the remainder of this Indenture and the Notes shall be unaffected thereby. 
 SECTION 9.04. Conditions to Legal Defeasance
or Covenant Defeasance. 
 The following shall be the conditions to application of Section 9.02 or Section 9.03 to the
outstanding Notes: 
 (1) the Issuer must irrevocably deposit with the Trustee, as trust funds, in trust solely for the
benefit of the Holders, U.S. legal tender, U.S. Government Obligations or a combination thereof, in such amounts as will be sufficient (without consideration of any reinvestment of interest) in the opinion of a nationally recognized firm
of independent public accountants selected by the Issuer, to pay the principal of and interest on the Notes on the stated date for payment or on the redemption date of premium, if any, the principal or installment of principal of or interest on the
Notes, 
  

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 (2) in the case of Legal Defeasance, the Issuer shall have delivered to the Trustee an
Opinion of Counsel in the United States confirming that: 
 (a) the Issuer has received from, or there has been published by
the Internal Revenue Service, a ruling, or 
 (b) since the date hereof, there has been a change in the applicable
U.S. federal income tax law, 
 in either case to the effect that, and based thereon this Opinion of Counsel shall confirm that, the Holders will not
recognize income, gain or loss for U.S. federal income tax purposes as a result of the Legal Defeasance and will be subject to U.S. 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, 
 (3) in the case of Covenant Defeasance, the Issuer shall have delivered to
the Trustee an Opinion of Counsel in the United States confirming that the Holders will not recognize income, gain or loss for U.S. federal income tax purposes as a result of such Covenant Defeasance and will be subject to U.S. federal
income tax on the same amounts, in the same manner and at the same times as would have been the case if the Covenant Defeasance had not occurred, 
 (4) no Default shall have occurred and be continuing on the date of such deposit (other than a Default resulting from the borrowing of funds to be applied to (x) such deposit, (y) similar contemporaneous
deposits to redeem or defease other Indebtedness and (z) costs related thereto), 
 (5) the Legal Defeasance or Covenant
Defeasance shall not result in a breach or violation of, or constitute (a) a Default under this Indenture or (b) a default under any other material agreement or instrument to which the Issuer or any of its Subsidiaries is a party or by
which the Issuer or any of its Subsidiaries is bound (other than any such Default or default resulting solely from the borrowing of funds to be applied to (x) such deposit, (y) similar contemporaneous deposits to redeem or defease other
Indebtedness and (z) costs related thereto), 
 (6) the Issuer shall have delivered to the Trustee an Officers’
Certificate and an Opinion of Counsel, each stating that all conditions precedent to the defeasance and discharge of the Notes have been complied with as required by this Indenture. 
 If the funds deposited with the Trustee to effect Covenant Defeasance are insufficient to pay the principal of and interest on the Notes when due, then
the Issuer’s obligations and the obligations of Guarantors under this Indenture will be revived and no such defeasance will be deemed to have occurred. 
  

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 SECTION 9.05. Deposited Money and U.S. Government Obligations To Be Held in Trust; Other Miscellaneous
Provisions. 
 All money and U.S. Government Obligations (including the proceeds thereof) deposited with the Trustee pursuant to
Section 9.04 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, to the Holders
of such Notes, of all sums due and to become due thereon in respect of principal, premium, if any, and accrued interest, but such money need not be segregated from other funds except to the extent required by law. 
 The Issuer, the Parent and the Guarantors shall (on a joint and several basis) pay and indemnify the Trustee against any tax, fee or other charge imposed
on or assessed against the U.S. Government Obligations deposited pursuant to Section 9.04 or the principal, premium, if any, 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 Nine to the contrary notwithstanding, the Trustee shall
deliver or pay to the Issuer from time to time any money or U.S. Government Obligations held by it as provided in Section 9.04 which, in the opinion of a nationally recognized firm of independent public accountants expressed in a written
certification thereof delivered to the Trustee, are in excess of the amount thereof which would then be required to be deposited to effect an equivalent Legal Defeasance or Covenant Defeasance. 
 SECTION 9.06. Reinstatement. 
 If the Trustee or
Paying Agent is unable to apply any money or U.S. Government Obligations in accordance with Section 9.01, 9.02 or 9.03, 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, the Issuer’s and each Guarantor’s obligations under this Indenture, the Notes and the Note Guarantees shall be revived and reinstated as though no deposit had occurred pursuant to this
Article Nine until such time as the Trustee or Paying Agent is permitted to apply all such money or U.S. Government Obligations in accordance with Section 9.01, 9.02 or 9.03, as the case may be; provided that if the Issuer
or the Guarantors have made any payment of principal of, premium, if any, or accrued interest on any Notes because of the reinstatement of their obligations, the Issuer or the Guarantors, as the case may be, shall be subrogated to the rights of the
Holders of such Notes to receive such payment from the money or U.S. Government Obligations held by the Trustee or Paying Agent. 
 SECTION 9.07.
Moneys Held by Paying Agent. 
 In connection with the satisfaction and discharge of this Indenture, all moneys then held by any Paying
Agent under the provisions of this Indenture shall, upon written demand of the Issuer, be paid to the Trustee, or if sufficient moneys have been deposited pursuant to Section 9.04, to the Issuer (or, if such moneys had been deposited by the
Guarantors, to such Guarantors), and thereupon such Paying Agent shall be released from all further liability with respect to such moneys. 
 SECTION 9.08.
Moneys Held by Trustee. 
 Subject to applicable law, any moneys deposited with the Trustee or any Paying Agent or then held by the
Issuer or the Guarantors in trust for the payment of the principal of, or premium, if any, or interest on any Note that are not applied but remain unclaimed by the Holder of such Note for one year after the date upon which the principal of, or
premium, if any, or interest on such Note shall have respectively become due and payable shall be repaid to the Issuer (or, if appropriate, the Guarantors), or if such moneys are then held by the Issuer or the Guarantors in trust, such moneys shall
be released from such trust; and the Holder of such Note entitled to receive such payment shall thereafter, as an unsecured general creditor, look only to the Issuer and the Guarantors for the payment thereof, and all liability of the Trustee or
such Paying Agent with respect to such trust money shall thereupon cease; provided that the 

  

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Trustee or any such Paying Agent, before being required to make any such repayment, may, at the expense of the Issuer and the Guarantors, either mail to each
Holder affected, at the address shown in the register of the Notes maintained by the Registrar pursuant to Section 2.04, or cause to be published once in a newspaper published in the English language, customarily published each Business Day and
of general circulation in the City of New York, New York, a notice that such money remains unclaimed and that, after a date specified therein, which shall not be less than 30 days from the date of such mailing or publication, any unclaimed
balance of such moneys then remaining will be repaid to the Issuer. After payment to the Issuer or the Guarantors or the release of any money held in trust by the Issuer or any Guarantors, as the case may be, Holders entitled to the money must look
only to the Issuer and the Guarantors for payment as general creditors unless applicable abandoned property law designates another Person. 
 The Trustee shall promptly and, in any event, no later that five (5) Business Days, pay to the Issuer (or if appropriate, the Guarantors) after request therefore any excess money held in respect of the Notes at such time in excess of
the amounts required to pay any of the Issuer’s Obligations then owing with respect to the Notes. 
 ARTICLE TEN 
 GUARANTEE OF NOTES 
 SECTION 10.01. Guarantee.

 Subject to the provisions of this Article Ten, the Parent and each Guarantor, by execution of this Indenture, jointly and severally,
unconditionally guarantees (each a “Note Guarantee” and collectively the “Note Guarantees”) to each Holder (i) the due and punctual payment of the principal of and interest on each Note, when and as the same
shall become due and payable, whether at maturity, by acceleration or otherwise, the due and punctual payment of interest on the overdue principal of and interest on the Notes, to the extent lawful, and the due and punctual payment of all other
Obligations and due and punctual performance of all obligations of the Issuer to the Holders or the Trustee all in accordance with the terms of such Note, this Indenture, and (ii) in the case of any extension of time of payment or renewal of
any Notes or any of such other Obligations with respect to the Notes, that the same will be promptly paid in full when due or performed in accordance with the terms of the extension or renewal, at stated maturity, by acceleration or otherwise. The
Parent and each Guarantor, by execution of this Indenture, agrees that its obligations hereunder shall be absolute and unconditional, irrespective of, and shall be unaffected by, any invalidity, irregularity or unenforceability of any such Note or
this Indenture, any failure to enforce the provisions of any such Note, this Indenture, any waiver, modification or indulgence granted to the Issuer with respect thereto by the Holder of such Note, or any other circumstances which may otherwise
constitute a legal or equitable discharge of a surety or such Guarantor. 
 The Parent and each Guarantor hereby waives diligence,
presentment, demand for payment, filing of claims with a court in the event of merger or bankruptcy of the Issuer, any right to require a proceeding first against the Issuer, protest or notice with respect to any such Note or the Indebtedness
evidenced thereby and all demands whatsoever, and covenants that this Note Guarantee will not be discharged as to any such Note except by payment in full of the principal thereof and interest thereon. The Parent and each Guarantor hereby agrees
that, as between the Parent or such Guarantor, on the one hand, and the Holders and the Trustee, on the other hand, (i) the maturity of the Obligations guaranteed hereby may be accelerated as provided in Article Six for the purposes of
this Note Guarantee, notwithstanding any stay, injunction or other prohibition preventing such acceleration in respect of the Obligations guaranteed hereby, and (ii) in the event of any declaration of acceleration of such Obligations as
provided in Article Six, such Obligations (whether or not due and payable) shall forthwith become due and payable by the Parent and each Guarantor for the purpose of this Note Guarantee. 
  

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 SECTION 10.02. Execution and Delivery of Guarantee. 
 To further evidence the Note Guarantee set forth in Section 10.01, the Parent and each Guarantor hereby agrees that a notation of such Note
Guarantee, substantially in the form included in Exhibit G hereto, shall be endorsed on each Note authenticated and delivered by the Trustee and such Note Guarantee shall be executed by either manual or facsimile signature of an Officer
or an Officer of a general partner, as the case may be, of the Parent and each Guarantor. The validity and enforceability of any Note Guarantee shall not be affected by the fact that it is not affixed to any particular Note. 
 The Parent and each of the Guarantors hereby agrees that its Note Guarantee set forth in Section 10.01 shall remain in full force and effect
notwithstanding any failure to endorse on each Note a notation of such Note Guarantee. 
 If an officer of the Parent or a Guarantor whose
signature is on this Indenture or a Note Guarantee no longer holds that office at the time the Trustee authenticates the Note on which such Note Guarantee is endorsed or at any time thereafter, such Guarantor’s Note Guarantee of such Note shall
be valid nevertheless. 
 The delivery of any Note by the Trustee, after the authentication thereof hereunder, shall constitute due delivery
of any Note Guarantee set forth in this Indenture on behalf of the Parent and the Guarantor. 
 SECTION 10.03. Limitation of Guarantee. 
 The obligations of the Parent and each Guarantor are limited to the maximum amount as will, after giving effect to all other contingent and fixed
liabilities of the Parent or such Guarantor and after giving effect to any collections from or payments made by or on behalf of any other Guarantor in respect of the obligations of the Parent or such other Guarantor under its Note Guarantee or
pursuant to its contribution obligations under this Indenture, result in the obligations of the Parent or such Guarantor under its Note Guarantee not constituting a fraudulent conveyance or fraudulent transfer under federal or state law. The Parent
and each Guarantor that makes a payment or distribution under a Note Guarantee shall be entitled to a contribution from each other Guarantor in a pro rata amount based on the Adjusted Net Assets of the Parent and each Guarantor. 
 SECTION 10.04. Release of Guarantor. 
 Guarantor shall
be released from its obligations under its Note Guarantee and its obligations under this Indenture: 
 (1) in the event of a
sale or other disposition of all or substantially all of the assets of such Guarantor, by way of merger, consolidation or otherwise, or a sale or other disposition of all of the Equity Interests of such Guarantor then held by the Issuer and the
Restricted Subsidiaries, in each case in accordance with the terms of this Indenture; or 
 (2) if such Guarantor is
designated as an Unrestricted Subsidiary or otherwise ceases to be a Restricted Subsidiary, in each case in accordance with the provisions of this Indenture, upon effectiveness of such designation or when such Guarantor first ceases to be a
Restricted Subsidiary, respectively; or 
  

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 (3) upon satisfaction and discharge of this Indenture or payment in full of the principal
of, premium, if any, accrued and unpaid interest on the Notes and all other Obligations that are then due and payable; 
 and in each such case, the Issuer
has delivered to the Trustee an Officers’ Certificate and an Opinion of Counsel, each stating that all conditions precedent herein provided for relating to such transactions have been complied with and that such release is authorized and
permitted hereunder. 
 The Trustee shall execute any documents reasonably requested by the Issuer or a Guarantor in order to evidence the
release of such Guarantor from its obligations under its Note Guarantee endorsed on the Notes and under this Article Ten. 
 SECTION 10.05. Waiver of
Subrogation. 
 The Parent and each Guarantor hereby irrevocably waives any claim or other rights which it may now or hereafter acquire
against the Issuer that arise from the existence, payment, performance or enforcement of the Parent’s or such Guarantor’s obligations under its Note Guarantee and this Indenture, including, without limitation, any right of subrogation,
reimbursement, exoneration, indemnification, and any right to participate in any claim or remedy of any Holder of Notes against the Issuer, whether or not such claim, remedy or right arises in equity, or under contract, statute or common law,
including, without limitation, the right to take or receive from the Issuer, directly or indirectly, in cash or other property or by set-off or in any other manner, payment or Notes on account of such claim or other rights. If any amount shall be
paid to the Parent’s or any Guarantor in violation of the preceding sentence and the Notes shall not have been paid in full, such amount shall have been deemed to have been paid to the Parent or such Guarantor for the benefit of, and held in
trust for the benefit of, the Holders, and shall forthwith be paid to the Trustee for the benefit of such Holders to be credited and applied upon the Notes, whether matured or unmatured, in accordance with the terms of this Indenture. The Parent and
each Guarantor acknowledges that it will receive direct and indirect benefits from the financing arrangements contemplated by this Indenture and that the waiver set forth in this Section 10.05 is knowingly made in contemplation of such
benefits. 
 ARTICLE ELEVEN 
 MISCELLANEOUS 
 SECTION 11.01. Trust Indenture Act Controls. 
 If any provision of this Indenture limits, qualifies or conflicts with another provision which is required to be included in this Indenture by the TIA, the required provision shall control. If any provision of this
Indenture modifies any TIA provision that may be so modified, such TIA provision shall be deemed to apply to this Indenture as so modified. If any provision of this Indenture excludes any TIA provision that may be so excluded, such TIA provision
shall be excluded from this Indenture. 
 The provisions of TIA §§ 310 through 317 that impose duties on any Person (including
the provisions automatically deemed included unless expressly excluded by this Indenture) are a part of and govern this Indenture, whether or not physically contained herein. 
  

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 SECTION 11.02. Notices. 
 Except for notice or communications to Holders, any notice or communication shall be given in writing and delivered in person, sent by facsimile, delivered by commercial courier service or mailed by first-class mail,
postage prepaid, addressed as follows: 
 If to the Issuer or any Guarantor: 
 GSI GROUP CORPORATION 
 125 Middlesex Turnpike

 Bedford, Massachusetts 01730 
 Attention: Chief Financial Officer 
 Fax Number: 781-266-5115 
 With a copy to: 
 Skadden, Arps, Slate,
Meagher & Flom LLP 
 Four Times Square 
 New York, New York 10036 
 Attention: Michael J. Zeidel, Esq. 
 Fax Number: 917-777-3259 
 If to the Trustee:

 The Bank of New York Mellon Trust Company, N.A. 
 222 Berkeley Street, 2nd Floor 
 Boston, Massachusetts 02116 
 Attention: Vaneta Bernard 
 Fax Number:
617-351-2401 
 Such notices or communications shall be effective when received and shall be sufficiently given if so given within the time
prescribed in this Indenture. 
 The Parent, the Issuer, the Guarantors or the Trustee by written notice to the others may designate
additional or different addresses for subsequent notices or communications. 
 Any notice or communication mailed to a Holder shall be mailed
by first-class mail, postage prepaid, to the Holder’s address shown on the register kept by the Registrar. 
 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 to a Holder is mailed in the manner provided above, it shall be deemed duly given, whether or not the
addressee receives it. 
 In case by reason of the suspension of regular mail service, or by reason of any other cause, it shall be
impossible to mail any notice as required by this Indenture, then such method of notification as shall be made with the approval of the Trustee shall constitute a sufficient mailing of such notice. 
  

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 SECTION 11.03. Communications by Holders with Other Holders. 
 Holders may communicate pursuant to TIA § 312(b) with other Holders with respect to their rights under this Indenture or the Notes. The Parent, the
Issuer, the Guarantors, the Trustee, the Registrar and anyone else shall have the protection of TIA § 312(c). 
 SECTION 11.04. Certificate and
Opinion as to Conditions Precedent. 
 Upon any request or application by the Parent, the Issuer or any Guarantor to the Trustee to take
any action or refrain from taking any action under this Indenture (other than the authentication of the Notes on the Initial Issuance Date), the Issuer or such Guarantor shall furnish to the Trustee: 
 (1) an Officers’ Certificate in form and substance reasonably satisfactory to the Trustee (which shall include the statements set
forth in Section 11.05) stating that, in the opinion of the signers, all conditions precedent, if any, provided for in this Indenture relating to the proposed action have been complied with; and 
 (2) an Opinion of Counsel in form and substance reasonably satisfactory to the Trustee (which shall include the statements set forth in
Section 11.05) stating that, in the opinion of such counsel, all such conditions precedent have been complied with. 
 SECTION 11.05. Statements
Required in Certificate and Opinion. 
 Each certificate and opinion with respect to compliance by or on behalf of the Parent, the Issuer
or any Guarantor with a condition or covenant provided for in this Indenture (other than the Officers’ Certificate required by Section 3.01 or 4.04) shall comply with the requirements of the Trust Indenture Act and any other
requirements set forth in this Indenture and shall include: 
 (1) a statement that the Person making such certificate or
opinion has read such covenant or condition and the definitions herein relating thereto; 
 (2) 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; 
 (3) a statement that, in the opinion of such Person, it or he has made such examination or investigation as is necessary to enable it or him to express an informed opinion as to whether or not such covenant or
condition has been complied with; and 
 (4) a statement as to whether or not, in the opinion of such Person, such covenant or
condition has been complied with; provided, however, that with respect to such matters of fact an Opinion of Counsel may rely on an Officers’ Certificate or certificate of public officials, and provided further that an
Opinion of Counsel may have customary qualifications for opinions of the type required. 
 SECTION 11.06. Rules by Trustee and Agents. 
 The Trustee may make reasonable rules for action by or meetings of Holders. The Registrar and Paying Agent may make reasonable rules for their functions.

  

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 SECTION 11.07. Business Days; Legal Holidays. 
 A “Business Day” is a day that is not a Legal Holiday. A “Legal Holiday” is a Saturday, a Sunday or other day on which
(i) commercial banks in the City of New York are authorized or required by law to close or (ii) the New York Stock Exchange is not open for trading. 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 for the intervening period. 
 SECTION 11.08. Governing
Law. 
 This Indenture and the Notes shall be governed by and construed in accordance with the laws of the State of New York, as
applied to contracts made and performed within the State of New York. 
 SECTION 11.09. No Adverse Interpretation of Other Agreements. 

This Indenture may not be used to interpret another indenture, loan, security or debt agreement of the Issuer or any Subsidiary thereof. No such
indenture, loan, security or debt agreement may be used to interpret this Indenture. 
 SECTION 11.10. No Recourse Against Others. 
 No recourse for the payment of the principal of or premium, if any, or interest, on any of the Notes, or for any claim based thereon or otherwise in
respect thereof, and no recourse under or upon any obligation, covenant or agreement of the Parent, the Issuer or any Guarantor in this Indenture or in any supplemental indenture, or in any of the Notes, or because of the creation of any
Indebtedness represented thereby, shall be had against any stockholder, officer, director or employee, as such, past, present or future, of the Parent, the Issuer or any Guarantor or of any successor corporation of the Parent, the Issuer or any
Guarantor or against the property or assets of any such stockholder, officer, employee or director, either directly or through the Parent, the Issuer or any Guarantor, or any successor corporation of the Parent, the Issuer or any Guarantor, whether
by virtue of any constitution, statute or rule of law, or by the enforcement of any assessment or penalty or otherwise; it being expressly understood that this Indenture and the Notes are solely obligations of the Parent, the Issuer and the
Guarantors, and that no such personal liability whatever shall attach to, or is or shall be incurred by, any stockholder, officer, employee or director of the Parent, the Issuer or any Guarantor, or any successor corporation thereof, because of the
creation of the indebtedness hereby authorized, or under or by reason of the obligations, covenants or agreements contained in this Indenture or the Notes or implied therefrom, and that any and all such personal liability of, and any and all claims
against every stockholder, officer, employee and director, are hereby expressly waived and released as a condition of, and as a consideration for, the execution of this Indenture and the issuance of the Notes. It is understood that this limitation
on recourse is made expressly for the benefit of any such shareholder, employee, officer or director and may be enforced by any of them. 
 SECTION 11.11.
Successors. 
 All agreements of the Parent, the Issuer and the Guarantors in this Indenture and the Notes shall bind their respective
successors. All agreements of each of the Trustee, any additional trustee and any Paying Agents in this Indenture shall bind its successor. 
  

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 SECTION 11.12. Multiple Counterparts. 
 The parties may sign multiple counterparts of this Indenture. Each signed counterpart shall be deemed an original, but all of them together represent one
and the same agreement. 
 SECTION 11.13. Table of Contents, Headings, Etc. The table of contents, cross-reference Section and headings of the
Articles and Sections of this Indenture have been inserted for convenience of reference only, are not to be considered a part hereof, and shall in no way modify or restrict any of the terms or provisions hereof. 
 SECTION 11.14. Separability. 
 Each provision of this
Indenture shall be considered separable and if for any reason any provision which is not essential to the effectuation of the basic purpose of this Indenture or 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. 
 SECTION 11.15. Acts of Holders. Record Dates.

 (a) Any request, demand, authorization, direction, notice, consent, waiver or other action provided by this Indenture to be given or taken
by Holders may be embodied in and evidenced by one or more instruments of substantially similar tenor signed by such Holders in person or by an agent duly appointed in writing and, except as herein otherwise expressly provided, such action shall
become effective when such instrument or instruments are delivered to the Trustee and, where it is hereby expressly required, to the Issuer. Such instrument or instruments (and the action embodied therein and evidenced thereby) are herein sometimes
referred to as an “Act” of the Holders signing such instrument or instruments. Proof of execution of any such instrument or of a writing appointing any such agent shall be sufficient for any purpose of this Indenture and (subject to
Section 6.01) conclusive in favor of the Trustee and the Issuer, if made in the manner provided in this Section. 
 (b) The fact and
date of the execution by any Person of any such instrument or writing may be proved by the affidavit of a witness of such execution or by a certificate of a notary public or other officer authorized by law to take acknowledgments of deeds,
certifying that the individual signing such instrument or writing acknowledged to him the execution thereof. Where such execution is by a signer acting in a capacity other than his individual capacity, such certificate or affidavit shall also
constitute sufficient proof of his authority. The fact and date of the execution of any such instrument or writing, or the authority of the Person executing the same, may also be proved in any other manner which the Trustee reasonably deems
sufficient. 
 (c) The Issuer may, in the circumstances permitted by the Trust Indenture Act, fix any day as the record date for the purpose
of determining the Holders entitled to give or take any request, demand, authorization, direction, notice, consent, waiver or other action, or to vote on any action, authorized or permitted to be given or taken by Holders. If not set by the Issuer
prior to the first solicitation of a Holder made by any Person in respect of any such action, or, in the case of any such vote, prior to such vote, the record date for any such action or vote shall be the 30th day (or, if later, the date of the most
recent list of Holders required to be provided pursuant to Section 7.01) prior to such first solicitation or vote, as the case may be. With regard to any record date, only the Holders on such date (or their duly designated proxies) shall be
entitled to give or take, or vote on, the relevant action. 
 (d) The ownership of the Notes shall be proved by the register of the Notes.

  

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 (e) Any request, demand, authorization, direction, notice, consent, waiver or other Act of the Holder of
any Notes shall bind every future Holder of the same Notes and the Holder of every Note issued upon the registration of transfer thereof or in exchange therefor or in lieu thereof in respect of anything done, omitted or suffered to be done by the
Trustee or the Issuer in reliance thereon, whether or not notation of such action is made upon such Notes. 
 SECTION 11.16. Failure or Indulgence Not
Waiver. 
 No failure or delay on the part of any Holder in the exercise of any power, right or privilege hereunder shall operate as a
waiver thereof, nor shall any single or partial exercise of any such power, right or privilege preclude other or further exercise thereof or of any other right, power or privilege. 
 Section 11.15 Waiver of Jury Trial. 
 EACH OF THE ISSUER, THE PARENT THE GUARANTOR AND THE TRUSTEE HEREBY IRREVOCABLY WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY LEGAL PROCEEDING ARISING OUT OF OR RELATING TO THIS
INDENTURE, THE SECURITIES OR THE TRANSACTION CONTEMPLATED HEREBY 
  

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

					
	GSI GROUP CORPORATION
		
	By:	 	/s/ Robert L. Bowen
		 	Name:	 	Robert L. Bowen
		 	Title:	 	President
	
	 GSI GROUP INC.,
 as a
Guarantor

		
	By:	 	/s/ Daniel J. Lyne
		 	Name:	 	Daniel J. Lyne
		 	Title:	 	Vice President, General Counsel and Secretary

  

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	Guarantors:
	
	 EAGLE ACQUISITION CORPORATION,
 as a
Guarantor

		
	By:	 	/s/ Daniel J. Lyne
		 	Name:	 	Daniel J. Lyne
		 	Title:	 	Secretary

  

 S-2 

					
	 THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.,
 as Trustee

		
	By:	 	/s/ Vaneta Bernard
		 	Name:	 	Vaneta Bernard
		 	Title:	 	Vice President

  

 S-3 

 EXHIBIT A 
 CUSIP 
 GSI GROUP CORPORATION 
  

			
	No.	  	$

 11% SENIOR NOTE DUE 2013 
 GSI GROUP CORPORATION, a Michigan corporation (the “Company”), for value received, promises to pay to CEDE & CO. or registered
assigns the principal sum of $              dollars on August 15, 2013. 
 Interest Payment Dates: February 15 and August 15. 
 Record Dates: February 1 and August 1. 
 Reference is made to the further provisions of this Note contained herein, which will for all purposes have the same effect as if set forth at this
place. 
  

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

					
	GSI GROUP CORPORATION
		
	By:	 	 
		 	Name:	 	
		 	Title:	 	
		
	By:	 	 
		 	Name:	 	
		 	Title:	 	

  

			
	Dated:_____________________	  	Certificate of Authentication

 This is one of the 11% Senior Notes due 2013 referred to in the within-mentioned Indenture.

  

					
	THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., as Trustee
		
	By:	 	 
		 	Name:	 	
		 	Title:	 	

 Dated:_____________________ 
  

 A-2 

 [FORM OF REVERSE OF NOTE] 
 GSI GROUP CORPORATION 
 11% SENIOR NOTE DUE 2013 
 THIS NOTE HAS BEEN ISSUED WITH ORIGINAL ISSUE DISCOUNT (“OID”) FOR UNITED STATES FEDERAL INCOME TAX PURPOSES. THE ISSUE PRICE, AMOUNT OF OID,
ISSUE DATE AND YIELD TO MATURITY OF THIS NOTE MAY BE OBTAINED BY CONTACTING: GSI Group Corporation, 125 Middlesex Turnpike, Bedford, Massachusetts 01730 
 Attention Robert Bowen; rbowen@gsig.com 
 1. Interest. GSI GROUP CORPORATION, a Michigan corporation
(the “Issuer”), promises to pay, until the principal hereof is paid or made available for payment, interest on the principal amount set forth on the face hereof at a rate of 11% per annum. Interest hereon will accrue from and
including the most recent date to which interest has been paid or, if no interest has been paid, from and including August 20, 2008 to but excluding the date on which interest is paid. Interest shall be payable in arrears on each
February 15 and August 15 commencing on February 15, 2009. Interest will be computed on the basis of a 360-day year of twelve 30-day months. The Issuer shall pay interest on overdue principal and on overdue interest (to the
full extent permitted by law) at a rate equal to the Default Rate. 
 2. Method of Payment. The Issuer will pay interest hereon
(except defaulted interest) to the Persons who are registered Holders at the close of business on February 1 or August 1 next preceding the interest payment date (whether or not a Business Day). Holders must surrender Notes to a Paying
Agent to collect principal payments. The Issuer will pay principal and interest in money of the United States of America that at the time of payment is legal tender for payment of public and private debts. Interest may be paid by check mailed to the
Holder entitled thereto at the address indicated on the register maintained by the Registrar for the Notes, provided, however, that payments on a certificated Note will be made by wire transfer to a U.S. dollar account maintained by the
payee with a bank in the United States if such Holder elects payment by wire transfer by giving written notice to the Trustee or the Paying Agent to such effect designating such account no later than 30 days immediately preceding the
relevant due date for payment (or such other date as the Trustee may accept in its discretion). 
 3. Paying Agent and Registrar.
Initially, The Bank of New York Mellon Trust Company, N.A. (the “Trustee”) will act as a Paying Agent and Registrar. The Issuer may appoint and change any Paying Agent or Registrar or co-Registrar without notice. The Issuer or any
of its Affiliates may act as Paying Agent or Registrar. 
 4. Indenture. The Issuer issued the Notes under an Indenture dated as of
August 20, 2008 (the “Indenture”) among the Parent as defined in the Indenture, the Issuer, the Guarantors (as defined in the Indenture) and the Trustee. This is one of an issue of Notes of the Issuer issued, or to be issued,
under the Indenture. 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 (15 U.S. Code §§ 77aaa-77bbbb), as amended from time to time.
The Notes are subject to all such terms, and Holders are referred to the Indenture and such Act for a statement of them. Capitalized and certain other terms used herein and not otherwise defined have the meanings set forth in the Indenture.

 5. [Intentionally Omitted] 
  

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 6. Optional Redemption. 
 (a) The Issuer, at its option, may redeem up to 50% of the aggregate principal amount of the Notes, (including any Notes issued after the Initial
Issue Date) in whole or in part, at any time on or after the first anniversary of the Initial Issue Date upon not less than 30 nor more than 60 days’ notice, at a redemption price equal to 100% of the principal amount of the
Notes to be redeemed, plus accrued and unpaid interest thereon, if any, to, but not including, the Redemption Date. 
 (b) At any time on or
after the third anniversary of the Initial Issue Date, the Issuer, at its option, may redeem up to 100% of the aggregate principal amount of the Notes (including any Notes issued after the Initial Issue Date), in whole or in part, at a
redemption price equal to 100% of the principal amount of the Notes to be redeemed, plus accrued and unpaid interest thereon, if any, to, but not including, the Redemption Date. 
 (c) In the event of a redemption of fewer than all of the Notes, the Trustee shall select the Notes to be redeemed in compliance with the requirements of
the principal national securities exchange, if any, while such Notes are listed, or if such Notes are not then listed on a national securities exchange, on a pro rata basis, by lot or in such other manner as the Trustee shall deem fair and
equitable. The Notes will be redeemable in whole or in part upon not less than 30 nor more than 60 days’ prior written notice, mailed by first-class mail to a Holder’s last address as it shall appear on the register
maintained by the Registrar of the Notes. On and after any redemption date, interest will cease to accrue on the Notes or portions thereof called for redemption unless the Issuer shall fail to redeem any such Note. 
 7. Trigger Event. If for any period of four consecutive fiscal quarters (each, a “Trigger Event Measuring Period”), beginning
with the fiscal quarter ending December 31, 2010, Net Indebtedness of the Parent and the Restricted Subsidiaries (including the Issuer) is greater than five times Consolidated Cash Flow of the Parent and the Restricted Subsidiaries (including
the Issuer) for such Trigger Event Measuring Period (a “Trigger Event”), then not later than 50 days after the end of such Trigger Event Measuring Period (or 95 days in the case of a Trigger Event Measuring Period ending with the
fourth quarter of a fiscal year) (the “Trigger Event Offer Date”), the Issuer shall be obligated to make an Offer to Purchase all of the then outstanding Notes, and any such repurchase pursuant to Section 4.20 shall be made on
a Business Day (the “Trigger Event Payment Date”) not more than 60 nor less than 30 days following the Trigger Event Offer Date, at a purchase price equal to 100% of the principal amount of the Notes to be repurchased plus accrued
and unpaid interest, if any, to the Trigger Event Payment Date. In the event an Annual Report or Quarterly Report, as applicable, is not filed on or before the Trigger Event Offer Date with respect to any Trigger Event Measuring Period, then, on or
before the Trigger Event Offer Date, (i) for purposes of determining whether a Trigger Event has occurred for any such Trigger Event Measuring Period, Net Indebtedness and Consolidated Cash Flow will be calculated and based on internally
available information of the Parent or the Issuer on and for the applicable date and periods, which shall be provided to a Holder upon its request and (ii) on or before the Trigger Event Offer Date, the Parent shall publicly disclose whether or
not a Trigger Event has occurred with respect to the applicable Trigger Event Measuring Period. 
 8. Notice of Redemption. Notice of
redemption will be mailed at least 30 days but not more than 60 days before the Redemption Date to each Holder of Notes to be redeemed at his registered address, except that redemption notices may be mailed more
than 60 days prior to a redemption date if the notice is issued in connection with a satisfaction and discharge of the Indenture. On and after the Redemption Date, unless the Issuer defaults in making the redemption payment, interest
ceases to accrue on Notes or portions thereof called for redemption. 
 9. Offers To Purchase. The Indenture provides that upon the
occurrence of a Change of Control or an Asset Sale and subject to further limitations contained therein, the Issuer shall make an offer to purchase outstanding Notes in accordance with the procedures set forth in the Indenture. 
  

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 10. Denominations, Transfer, Exchange. The Notes are in registered form without
coupons in denominations of $2,000 and integral multiples of $1,000. A Holder may transfer or exchange Notes in accordance with the Indenture. The Registrar may require a Holder, among other things, to furnish appropriate endorsements and transfer
documents and to pay to it any taxes and fees required by law or permitted by the Indenture. The Registrar need not register the transfer of or exchange any Notes or portion of a Note selected for redemption, or register the transfer of or exchange
any Notes for a period of 15 days before a mailing of notice of redemption. 
 11. Persons Deemed Owners. The registered
Holder of this Note may be treated as the owner of this Note for all purposes. 
 12. Unclaimed Money. If money for the payment of
principal or interest remains unclaimed for two years, the Trustee will pay the money back to the Issuer at its written request. After that, Holders entitled to the money must look to the Issuer for payment as general creditors unless an
“abandoned property” law designates another Person. 
 13. Amendment, Supplement, Waiver, Etc. The
Parent, the Issuer, the Guarantors and the Trustee (if a party thereto) may, without the consent of the Holders of any outstanding Notes, amend, waive or supplement the Indenture or the Notes for certain specified purposes, including, among other
things, curing ambiguities, defects or inconsistencies, maintaining the qualification of the Indenture under the Trust Indenture Act of 1939, as amended, and making any change that does not materially and adversely affect the rights of any
Holder. Other amendments and modifications of the Indenture or the Notes may be made by the Parent, the Issuer, the Guarantors and the Trustee with the consent of the Holders of not less than a majority of the aggregate principal amount of the
outstanding Notes, subject to certain exceptions requiring the consent of the Holders of the particular Notes to be affected. 
 14.
Successor Corporation. When a successor corporation assumes all the obligations of its predecessor under the Notes and the Indenture and the transaction complies with the terms of Article Five of the Indenture, the predecessor
corporation will, except as provided in Article Five, be released from those obligations. 
 15. Defaults and Remedies. Events of
Default are set forth in the Indenture. Subject to certain limitations in the Indenture, if an Event of Default (other than an Event of Default specified in Section 6.01(7) or (8) ) occurs and is continuing, the Trustee or the Holders
of not less than 25% in aggregate principal amount of the outstanding Notes may, by written notice to the Trustee and the Issuer, and the Trustee upon the request of the Holders of not less than 25% in aggregate principal amount of the
outstanding Notes shall, declare all principal of and accrued interest (in addition to the Default Rate) on all Notes to be immediately due and payable and such amounts shall become immediately due and payable. If an Event of Default specified in
Section 6.01(7) or (8) occurs, the principal amount of and interest on all Notes shall ipso facto become and be immediately due and payable without any declaration or other act on the part of the Trustee or any Holder. Holders may
not enforce the Indenture or the Notes except as provided in the Indenture. The Trustee may require indemnity satisfactory to it before it enforces the Indenture or the Notes. Subject to certain limitations, Holders of a majority in principal amount
of the then outstanding Notes may direct the Trustee in its exercise of any trust or power. The Trustee may withhold from Holders notice of any continuing default (except a default in payment of principal, premium, if any, or interest on the Notes
or a default in the observance or performance of any of the obligations of the Issuer under Article Five of the Indenture) if it determines that withholding notice is in their best interests. 
  

 A-5 

 16. Trustee Dealings with Issuer. The Trustee, in its individual or any other capacity, may make
loans to, accept deposits from, and perform services for the Issuer or its Affiliates, and may otherwise deal with the Issuer or its Affiliates, as if it were not Trustee. 
 17. Discharge. The Issuer’s obligations pursuant to the Indenture will be discharged, except for obligations pursuant to certain sections
thereof, subject to the terms of the Indenture, upon the payment of all the Notes or upon the irrevocable deposit with the Trustee of United States dollars or U.S. Government Obligations sufficient to pay when due principal of and interest on
the Notes to maturity or redemption, as the case may be. 
 18. Guarantees. The Note will be entitled to the benefits of certain Note
Guarantees made for the benefit of the Holders. Reference is hereby made to the Indenture for a statement of the respective rights, limitations of rights, duties and obligations thereunder of the Guarantors, the Trustee and the Holders. 

19. Authentication. This Note shall not be valid until the Trustee signs the certificate of authentication on the other side of this Note.

 20. Governing Law. This Note shall be governed by and construed in accordance with the laws of the State of New York, as applied to
contracts made and performed within the State of New York. The Trustee, the Issuer, the Guarantors and the Holders agree to submit to the jurisdiction of the courts of the State of New York in any action or proceeding arising out of or relating to
the Indenture or the Notes. 
 21. Abbreviations. Customary abbreviations may be used in the name of a Holder or an assignee, such as:
TEN COM (= tenants in common), TENANT (= 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). 
 The Issuer will furnish to any Holder upon written request and without charge a copy of the Indenture. Requests may be made to: 
 GSI GROUP CORPORATION 
 125 Middlesex Turnpike

 Bedford, Massachusetts 01730 
 Attention: Chief Financial Officer 
  

 A-6 

 ASSIGNMENT 
 I or we assign and transfer this Note to: 
 (Insert assignee’s Social Security or tax I.D. number)

  
  
  
  
  
  
 (Print or type name, address and zip code of
assignee) 
 and irrevocably appoint: 
  
  
  
  
 Agent to transfer this Note on the books of the Issuer. The
Agent may substitute another to act for him. 
  

									
				
	Date:_____________________	 		 	Your Signature:	 	 
		 		 		 		 	(Sign exactly as your name appears on the other side of this Note)

 Signature Guarantee:_____________________ 
 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-7 

 OPTION OF HOLDER TO ELECT PURCHASE 
 If you want to elect to have all or any part of this Note purchased by the Issuer pursuant to Section 4.09, Section 4.19 or Section 4.20
of the Indenture, check the appropriate box: 
  

					
	 ̈    Section 4.09	  	 ̈    Section 4.19	  	 ̈    Section 4.20

 If you want to have only part of the Note purchased by the Issuer pursuant to Section 4.09,
Section 4.19 or Section 4.20 of the Indenture, state the amount you elect to have purchased: 
 $________________________ 
 (multiple of $1,000) 
 Date:___________________ 
  

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

 _________________________ 
 Signature Guaranteed 
 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 

 EXHIBIT B 
 [FORM OF LEGEND FOR 144A NOTES AND OTHER NOTES 
 THAT ARE RESTRICTED NOTES ] 
 THE NOTE (OR ITS PREDECESSOR) EVIDENCED HEREBY WAS ORIGINALLY ISSUED IN A TRANSACTION EXEMPT FROM REGISTRATION UNDER SECTION 5 OF THE UNITED STATES SECURITIES ACT
OF 1933, AND THE NOTE EVIDENCED HEREBY MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED IN THE ABSENCE OF SUCH REGISTRATION OR AN APPLICABLE EXEMPTION THEREFROM. EACH PURCHASER OF THE NOTE EVIDENCED HEREBY IS HEREBY NOTIFIED THAT THE SELLER
MAY BE RELYING ON THE EXEMPTION FROM THE PROVISIONS OF SECTION 5 OF THE SECURITIES ACT PROVIDED BY RULE 144A THEREUNDER OR ANOTHER EXEMPTION UNDER THE SECURITIES ACT. THE HOLDER OF THE NOTE EVIDENCED HEREBY AGREES FOR THE BENEFIT OF GSI
GROUP CORPORATION THAT (A) SUCH NOTE MAY BE RESOLD, PLEDGED OR OTHERWISE TRANSFERRED ONLY IN ACCORDANCE WITH ANY APPLICABLE SECURITIES LAWS OF ANY STATE OF THE UNITED STATES OR ANY OTHER APPLICABLE JURISDICTION (1)(A) TO A PERSON WHO THE
SELLER REASONABLY BELIEVES IS A QUALIFIED INSTITUTIONAL BUYER (AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT), PURCHASING FOR ITS OWN ACCOUNT IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE 144A UNDER THE SECURITIES ACT, (B) IN A
TRANSACTION MEETING THE REQUIREMENTS OF RULE 144 OF THE SECURITIES ACT, (C) OUTSIDE THE UNITED STATES TO A FOREIGN PERSON IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE 904 OF REGULATION S UNDER THE SECURITIES ACT, (D) TO
AN “ACCREDITED INVESTOR” WITHIN THE MEANING OF RULE 501(A)(1), (2), (3) OR (7) UNDER THE SECURITIES ACT (AN “INSTITUTIONAL ACCREDITED INVESTOR”) THAT IS PURCHASING AT LEAST $100,000 OF NOTES FOR ITS OWN ACCOUNT OR
FOR THE ACCOUNT OF AN INSTITUTIONAL ACCREDITED INVESTOR (AND BASED UPON AN OPINION OF COUNSEL IF GSI GROUP CORPORATION SO REQUESTS) OR (E) IN ACCORDANCE WITH ANOTHER EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, PROVIDED
THAT IN THE CASE OF A TRANSFER UNDER CLAUSE (E) SUCH TRANSFER IS SUBJECT TO THE RECEIPT BY THE TRUSTEE (AND GSI GROUP CORPORATION, IF IT SO REQUESTS) OF A CERTIFICATION OF THE TRANSFEROR AND AN OPINION OF COUNSEL TO THE EFFECT THAT SUCH
TRANSFER IS IN COMPLIANCE WITH THE SECURITIES ACT, (2) TO GSI GROUP CORPORATION OR ANY OF ITS SUBSIDIARIES OR (3) UNDER AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT AND, IN EACH CASE, IN ACCORDANCE WITH ANY APPLICABLE
SECURITIES LAWS OF ANY STATE OF THE UNITED STATES OR ANY OTHER APPLICABLE JURISDICTION AND THE INDENTURE GOVERNING THE NOTES AND (B) THE HOLDER WILL, AND EACH SUBSEQUENT HOLDER IS REQUIRED TO, NOTIFY ANY PURCHASER FROM IT OF THE NOTE EVIDENCED
HEREBY OF THE RESALE RESTRICTIONS SET FORTH IN (A) ABOVE. IF ANY RESALE OR OTHER TRANSFER OF ANY NOTE IS PROPOSED TO BE MADE UNDER CLAUSE (A)(1)(D) ABOVE WHILE THESE TRANSFER RESTRICTIONS ARE IN FORCE, THEN THE TRANSFEROR SHALL DELIVER A
LETTER FROM THE TRANSFEREE TO GSI GROUP CORPORATION AND THE TRUSTEE WHICH SHALL PROVIDE, AMONG OTHER THINGS, THAT THE TRANSFEREE IS AN INSTITUTIONAL ACCREDITED INVESTOR AND THAT IT IS ACQUIRING THE SECURITIES FOR INVESTMENT PURPOSES AND NOT FOR
DISTRIBUTION IN VIOLATION OF THE SECURITIES ACT. 
  

 B-1 

 [FOR RESTRICTED NOTES THAT ARE NOT GLOBAL NOTES NOTWITHSTANDING THE FOREGOING, THE NOTES MAY BE PLEDGED IN CONNECTION
WITH A BONA FIDE MARGIN ACCOUNT OR OTHER LOAN OR FINANCING ARRANGEMENT SECURED BY THE NOTES PROVIDED THAT ANY RECIPIENT AGREES TO THE TRANSFER RESTRICTIONS HEREIN. ] 
  

 B-2 

 [FORM OF ASSIGNMENT FOR 144A NOTES AND OTHER NOTES 
 THAT ARE RESTRICTED NOTES] 
 I or we assign and transfer this Note to:

 (Insert assignee’s Social Security or tax I.D. number) 
  
  
  
  
  
  
 (Print or type name, address and zip code of
assignee) 
 and irrevocably appoint: 
  
  
  
  
 Agent to transfer this Note on the books of the Issuer. The
Agent may substitute another to act for him. 
 [Check One] 
  

			
	 ̈ (a)	  	This Note is being transferred in compliance with the exemption from registration under the Securities Act provided by Rule 144A thereunder.
	
	or
		
	 ̈ (b)	  	This Note is being transferred other than in accordance with (a) above and documents are being furnished which comply with the conditions of transfer set forth in this Note and the
Indenture.

 If neither of the foregoing boxes is checked, the Trustee or Registrar shall not be obligated to register this
Note in the name of any person other than the Holder hereof unless and until the conditions to any such transfer of registration set forth herein and in Sections 2.16 and 2.17 of the Indenture shall have been satisfied. 
  

									
				
	Date:_____________________	 		 	Your Signature:	 	 
		 		 		 		 	(Sign exactly as your name appears on the face of this Note)

 Signature Guarantee: ________________________________________________________________ 
 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. 
  

 B-3 

 TO BE COMPLETED BY PURCHASER IF (a) ABOVE IS CHECKED 
 The undersigned represents and warrants that it is purchasing this Note for its own account or an account with respect to which it exercises sole
investment discretion and that it and any such account is a “qualified institutional buyer” within the meaning of Rule 144A under the Securities Act and is aware that the sale to it is being made in reliance on Rule 144A and
acknowledges that it has received such information regarding the Issuer as the undersigned has requested pursuant to Rule 144A or has determined not to request such information and that it is aware that the transferor is relying upon the
undersigned’s foregoing representations in order to claim the exemption from registration provided by Rule 144A. 
  

					
			
	Dated:_____________________	 		 	  
		 		 	NOTICE: To be executed by an executive officer

  

 B-4 

 EXHIBIT C 
 [FORM OF LEGEND FOR REGULATION S NOTE] 
 THE NOTE (OR ITS PREDECESSOR) EVIDENCED HEREBY WAS ORIGINALLY ISSUED IN A
TRANSACTION EXEMPT FROM REGISTRATION UNDER SECTION 5 OF THE UNITED STATES SECURITIES ACT OF 1933, AND THE NOTE EVIDENCED HEREBY MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED IN THE ABSENCE OF SUCH REGISTRATION OR AN APPLICABLE
EXEMPTION THEREFROM. EACH PURCHASER OF THE NOTE EVIDENCED HEREBY IS HEREBY NOTIFIED THAT THE SELLER MAY BE RELYING ON THE EXEMPTION FROM THE PROVISIONS OF SECTION 5 OF THE SECURITIES ACT PROVIDED BY RULE 144A THEREUNDER OR ANOTHER
EXEMPTION UNDER THE SECURITIES ACT. THE HOLDER OF THE NOTE EVIDENCED HEREBY AGREES FOR THE BENEFIT OF GSI GROUP CORPORATION THAT (A) SUCH NOTE MAY BE RESOLD, PLEDGED OR OTHERWISE TRANSFERRED ONLY IN ACCORDANCE WITH ANY APPLICABLE SECURITIES
LAWS OF ANY STATE OF THE UNITED STATES OR ANY OTHER APPLICABLE JURISDICTION (1)(A) TO A PERSON WHO THE SELLER REASONABLY BELIEVES IS A QUALIFIED INSTITUTIONAL BUYER (AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT), PURCHASING FOR ITS OWN
ACCOUNT IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE 144A UNDER THE SECURITIES ACT, (B) IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE 144 OF THE SECURITIES ACT, (C) OUTSIDE THE UNITED STATES TO A FOREIGN PERSON IN A
TRANSACTION MEETING THE REQUIREMENTS OF RULE 904 OF REGULATION S UNDER THE SECURITIES ACT, (D) TO AN “ACCREDITED INVESTOR” WITHIN THE MEANING OF RULE 501(A)(1), (2), (3) OR (7) UNDER THE SECURITIES ACT (AN
“INSTITUTIONAL ACCREDITED INVESTOR”) THAT IS PURCHASING AT LEAST $100,000 OF NOTES FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF AN INSTITUTIONAL ACCREDITED INVESTOR (AND BASED UPON AN OPINION OF COUNSEL IF GSI GROUP CORPORATION SO REQUESTS)
OR (E) IN ACCORDANCE WITH ANOTHER EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, PROVIDED THAT IN THE CASE OF A TRANSFER UNDER CLAUSE (E) SUCH TRANSFER IS SUBJECT TO THE RECEIPT BY THE TRUSTEE (AND GSI GROUP
CORPORATION, IF IT SO REQUESTS) OF A CERTIFICATION OF THE TRANSFEROR AND AN OPINION OF COUNSEL TO THE EFFECT THAT SUCH TRANSFER IS IN COMPLIANCE WITH THE SECURITIES ACT, (2) TO GSI GROUP CORPORATION OR ANY OF ITS SUBSIDIARIES OR (3) UNDER
AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT AND, IN EACH CASE, IN ACCORDANCE WITH ANY APPLICABLE SECURITIES LAWS OF ANY STATE OF THE UNITED STATES OR ANY OTHER APPLICABLE JURISDICTION AND THE INDENTURE GOVERNING THE NOTES AND
(B) THE HOLDER WILL, AND EACH SUBSEQUENT HOLDER IS REQUIRED TO, NOTIFY ANY PURCHASER FROM IT OF THE NOTE EVIDENCED HEREBY OF THE RE-SALE RESTRICTIONS SET FORTH IN (A) ABOVE. IF ANY RESALE OR OTHER TRANSFER OF ANY NOTE IS PROPOSED TO BE
MADE UNDER CLAUSE (A)(1)(D) ABOVE WHILE THESE TRANSFER RESTRICTIONS ARE IN FORCE, THEN THE TRANSFEROR SHALL DELIVER A LETTER FROM THE TRANSFEREE TO GSI GROUP CORPORATION AND THE TRUSTEE WHICH SHALL PROVIDE, AMONG OTHER THINGS, THAT THE
TRANSFEREE IS AN INSTITUTIONAL ACCREDITED INVESTOR AND THAT IT IS ACQUIRING THE SECURITIES FOR INVESTMENT PURPOSES AND NOT FOR DISTRIBUTION IN VIOLATION OF THE SECURITIES ACT. 
  

 C-1 

 [FORM OF ASSIGNMENT FOR REGULATION S NOTE] 
 I or we assign and transfer this Note to: 
 (Insert assignee’s Social Security or tax I.D. number)

  
  
  
  
  
  
 (Print or type name, address and zip code of
assignee) 
 and irrevocably appoint: 
  
  
  
  
 Agent to transfer this Note on the books of the Issuer. The
Agent may substitute another to act for him. 
 [Check One] 
  

			
	 ̈ (a)	  	This Note is being transferred in compliance with the exemption from registration under the Securities Act provided by Rule 144A thereunder.
	
	or
		
	 ̈ (b)	  	This Note is being transferred other than in accordance with (a) above and documents are being furnished which comply with the conditions of transfer set forth in this Note and the
Indenture.

 If neither of the foregoing boxes is checked, the Trustee or Registrar shall not be obligated to register this
Note in the name of any person other than the Holder hereof unless and until the conditions to any such transfer of registration set forth herein and in Sections 2.16 and 2.17 of the Indenture shall have been satisfied. 
  

									
				
	Date:_____________________	 		 	Your Signature:	 	 
		 		 		 		 	(Sign exactly as your name appears on the face of this Note)

 Signature Guarantee: ________________________________________________________________ 
 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. 
  

 C-2 

 TO BE COMPLETED BY PURCHASER IF (a) ABOVE IS CHECKED 
 The undersigned represents and warrants that it is purchasing this Note for its own account or an account with respect to which it exercises sole investment discretion
and that it and any such account is a “qualified institutional buyer” within the meaning of Rule 144A under the Securities Act and is aware that the sale to it is being made in reliance on Rule 144A and acknowledges that it has
received such information regarding the Issuer as the undersigned has requested pursuant to Rule 144A or has determined not to request such information and that it is aware that the transferor is relying upon the undersigned’s foregoing
representations in order to claim the exemption from registration provided by Rule 144A. 
  

					
			
	Dated:_____________________	 		 	  
		 		 	NOTICE: To be executed by an executive officer

  

 C-3 

 EXHIBIT D 
 [FORM OF LEGEND FOR GLOBAL NOTE] 
 Any Global Note authenticated and delivered hereunder shall bear a
legend (which would be in addition to any other legends required in the case of a Restricted Note) in substantially the following form: 
 This Note is a Global Note within the meaning of the Indenture dated as of •, 2008 relating to the Notes and is registered in the name of a depository or a nominee of a depository. This Note is not exchangeable for Notes registered in
the name of a person other than the depository or its nominee except in the limited circumstances described in the Indenture, and no transfer of this Note (other than a transfer of this Note as a whole by the depository to a nominee of the
depository or by a nominee of the depository to the depository or another nominee of the depository) may be registered except in the limited circumstances described in the Indenture. 
 Unless this certificate is presented by an authorized representative of the Depository Trust Company (a New York corporation) (“DTC”) to
the issuer or its agent for registration of transfer, exchange, or payment, and any certificate issued is registered in the name of CEDE & CO. or in such other name as it requested by an authorized representative of DTC (and any payment is
made to CEDE & CO. or such other entity as is requested by an authorized representative of DTC), any transfer, pledge or other use hereof for value or otherwise by or to any Person is wrongful inasmuch as the registered owner hereof,
CEDE & CO., has an interest herein. 
  

 D-1 

 EXHIBIT E 
 Form of Certificate To Be 
 Delivered in Connection with  
 Transfers to Non-QIB Accredited Investors 
 [            ] 
 [            ] 
 [            ] 
 Attention:
[            ] 
 Ladies and Gentlemen: 
 In connection with our proposed purchase of 11% Senior Notes due 2013 (the “Notes”) of GSI Group Corporation, a Michigan
corporation (the “Issuer”), we confirm that: 
 1. We understand that any subsequent transfer of the Notes is
subject to certain restrictions and conditions set forth in the Indenture dated as of August 20, 2008 relating to the Notes and we agree to be bound by, and not to resell, pledge or otherwise transfer the Notes except in compliance with, such
restrictions and conditions and the Securities Act of 1933, as amended (the “Securities Act”). 
 2. We
understand that the Notes have not been registered under the Securities Act or any other applicable securities laws, have not been and will not be qualified for sale under the securities laws of any non-U.S. jurisdiction and that the Notes may
not be offered, sold, pledged or otherwise transferred 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 any Notes, we will
do so only (i) to the Issuer or any subsidiary thereof, (ii) in accordance with Rule 144A under the Securities Act to a “qualified institutional buyer” (as defined in Rule 144A), (iii) 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 you a signed letter containing certain representations and agreements relating to the
restrictions on transfer of the Notes, (iv) outside the United States to persons other than U.S. persons in offshore transactions meeting the requirements of Rule 904 of Regulation S under the Securities Act, (v) pursuant to
the exemption form registration provided by Rule 144 under the Securities Act (if applicable) or (vi) pursuant to an effective registration statement, and we further agree to provide to any person purchasing any of the Notes from us a
notice advising such purchaser that resales of the Notes are restricted as stated herein. 
 3. We understand that, on any
proposed resale of any Notes, we will be required to furnish to you and the Issuer such certifications, legal opinions and other information as you and the Issuer 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. 
 4. We are an
institutional “accredited investor” (as defined in Rule 501(a)(1), (2), (3) or (7) 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 each are able to bear the economic risk of our or their investment, as the case may be. 
  

 E-1 

 5. We are acquiring the Notes purchased by us for our 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. 
 6. We are not acquiring the Notes with a view toward the distribution thereof in a transaction that would violate the Securities Act or the securities laws of any state of the United States or any other applicable jurisdiction. 

You are 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 proceeding or official inquiry with respect to the matters covered hereby. 
  

					
	Very truly yours,
	
	[Name of Transferee]
		
	By:	 	 
		 	Name:	 	
		 	Title:	 	

 Date:_____________________ 
  

 E-2 

 EXHIBIT F 
 Form of Certificate To Be Delivered 
 in Connection with Transfers  
 Pursuant to Regulation S 
 [            ] 
 [            ] 
 [            ] 
 Attention: Corporate Trust Services 
  

	 	Re:	GSI Group Corporation, a Michigan corporation (the “Issuer”) 11% Senior Notes due 2013 (the “Notes”) 

 Dear Sirs: 
 In connection with our proposed sale of
$             aggregate principal amount of the Notes, we confirm that such sale has been effected pursuant to and in accordance with Regulation S under the U.S. Securities
Act of 1933, as amended (the “Securities Act”), and, accordingly, we represent that: 
 (1) the offer of
the Notes was not made to a U.S. person or to a person in the United States; 
 (2) either (a) at the time the buy
offer was originated, the transferee was outside the United States or we and any person acting on our behalf reasonably believed that the transferee was outside the United States, or (b) the transaction was executed in, on or through the
facilities of a designated off-shore securities market and neither we nor any person acting on our behalf knows that the transaction has been pre-arranged with a buyer in the United States; 
 (3) no directed selling efforts have been made in the United States in contravention of the requirements of Rule 904(a) of
Regulation S; 
 (4) the transaction is not part of a plan or scheme to evade the registration requirements of the
Securities Act; and 
 (5) we have advised the transferee of the transfer restrictions applicable to the Notes. 
  

 F-1 

 You are 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. Terms used in this certificate have the meanings set forth in Regulation S. 
  

					
	Very truly yours,
	
	[Name of Transferee]
		
	By:	 	 
		 	Name:	 	
		 	Title:	 	

  

 F-2 

 EXHIBIT G 
 NOTATION OF GUARANTEE 
 Each of the undersigned (the “Guarantors”) hereby jointly and
severally unconditionally guarantees (this “Guarantee”), to the extent set forth in the Indenture dated as of August 20, 2008 by and among GSI Group Corporation, as issuer, the Guarantors, as guarantors, and The Bank of New
York Mellon Trust Company, N.A., as Trustee (as amended, restated or supplemented from time to time, the “Indenture”), and subject to the provisions of the Indenture, (a) the due and punctual payment of the principal of, and
premium, if any, and interest on the Notes, when and as the same shall become due and payable, whether at maturity, by acceleration or otherwise, the due and punctual payment of interest on overdue principal of, and premium and, to the extent
permitted by law, interest, and the due and punctual performance of all other obligations of the Issuer to the Holders or the Trustee, all in accordance with the terms set forth in Article Ten of the Indenture, and (b) in case of any
extension of time of payment or renewal of any Notes or any of such other obligations, that the same will 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 or otherwise. 
 The obligations of the Guarantors to the Holders and to the Trustee pursuant to this Guarantee and the
Indenture are expressly set forth in Article Ten of the Indenture, and reference is hereby made to the Indenture for the precise terms and limitations of this Guarantee. Each Holder of the Note to which this Guarantee is endorsed, by accepting
such Note, agrees to and shall be bound by such provisions. 
 [Signatures on Following Pages] 
  

 G-1 

 IN WITNESS WHEREOF, each of the Guarantors has caused this Guarantee to be signed by a duly authorized
officer. 
  

					
	GSI GROUP INC.
		
	By:	 	 
		 	Name:	 	Robert L. Bowen
		 	Title:	 	Vice President and Chief Financial Officer
	
	EAGLE ACQUISITION CORPORATION
		
	By:	 	 
		 	Name:	 	Daniel J. Lyne
		 	Title:	 	Secretary

  

 G-2Warrant Agreement

 Exhibit 10.2 
 WARRANT AGREEMENT 
 DATED AS OF AUGUST 20, 2008 
 AMONG 
 GSI GROUP INC. 
 AND 
 THE INITIAL HOLDERS 
 LISTED ON SCHEDULE I HERETO 

 TABLE OF CONTENTS 
  

					
	 	  	 	  	PAGE
	 ARTICLE I DEFINITIONS
	  	1
			
	 1.1
	  	 DEFINITIONS
	  	1
	 1.2
	  	 RULES OF CONSTRUCTION
	  	7
		
	 ARTICLE II ISSUANCE OF WARRANTS AND RESERVATION OF WARRANT SHARES
	  	7
			
	 2.1
	  	 ISSUANCE OF WARRANTS TO INITIAL HOLDERS; WARRANT AGREEMENT
	  	7
	 2.2
	  	 RESERVATION OF WARRANT SHARES
	  	8
		
	 ARTICLE III CERTAIN ADMINISTRATIVE PROVISIONS
	  	8
			
	 3.1
	  	 FORM OF WARRANT; REGISTER
	  	8
	 3.2
	  	 EXCHANGE OF WARRANTS FOR WARRANTS
	  	10
	 3.3
	  	 MECHANICS OF TRANSFER OF WARRANTS
	  	11
		
	 ARTICLE IV EXERCISE OF WARRANT; EXCHANGE FOR WARRANT SHARES
	  	11
			
	 4.1
	  	 EXERCISE OF WARRANTS; EXPIRATION
	  	11
	 4.2
	  	 EXCHANGE FOR WARRANT SHARES
	  	12
	 4.3
	  	 EXERCISE AT EFFECTIVE TIME
	  	12
	 4.4
	  	 ISSUANCE OF WARRANT SHARES
	  	13
		
	 ARTICLE V ADJUSTMENT OF EXERCISE PRICE AND NUMBER OF WARRANT SHARES
	  	15
			
	 5.1
	  	 GENERAL
	  	15
	 5.2
	  	 DISTRIBUTIONS, SUBDIVISIONS AND COMBINATIONS
	  	15
	 5.3
	  	 CAPITAL REORGANIZATION, CAPITAL RECLASSIFICATION, MERGER, ETC.
	  	16
	 5.4
	  	 PURCHASE RIGHTS
	  	17
	 5.5
	  	 MISCELLANEOUS
	  	17
		
	 ARTICLE VI COVENANTS OF THE ISSUER
	  	18
			
	 6.1
	  	 NOTICES OF CERTAIN ACTIONS
	  	18
	 6.2
	  	 MERGER AND CONSOLIDATION OF THE ISSUER
	  	19
	 6.3
	  	 NO AVOIDANCE
	  	19
	 6.4
	  	 SALE OF WARRANTS
	  	19
		
	 ARTICLE VII MISCELLANEOUS
	  	20
			
	 7.1
	  	 NOTICES
	  	20
	 7.2
	  	 NO VOTING RIGHTS; LIMITATION OF LIABILITY
	  	20
	 7.3
	  	 AMENDMENTS AND WAIVERS
	  	20
	 7.4
	  	 REMEDIES
	  	21
	 7.5
	  	 BINDING EFFECT
	  	21

  

 i 

					
	 7.6
	  	 COUNTERPARTS
	  	21
	 7.7
	  	 GOVERNING LAW; JURISDICTION AND VENUE
	  	21
	 7.8
	  	 WAIVER OF JURY TRIAL
	  	22
	 7.9
	  	 BENEFITS OF THIS AGREEMENT
	  	22
	 7.10
	  	 HEADINGS
	  	23
	 7.11
	  	 AGGREGATION OF WARRANTS AND WARRANT SHARES
	  	23
	 7.12
	  	 SEVERABILITY
	  	23

  

			
	 Schedule I
	  	Holders
	 Exhibit A
	  	Form of Warrant
	 Annex A
	  	Exercise Form
	 Annex B
	  	Exchange Form
	 Annex C
	  	Assignment Form

  

 ii 

 This WARRANT AGREEMENT (this “Agreement”), dated as of August 20, 2008, between the
Initial Holders listed on Schedule I hereto (the “Initial Holders”) and GSI Group Inc., a company continued and existing under the laws of the Province of New Brunswick, Canada (the “Issuer”) 
 WHEREAS, the Issuer, GSI Group Corporation, a Michigan corporation (“U.S. Sub”) and the Initial Holders have entered into a Purchase
Agreement dated July 9, 2008 (the “Purchase Agreement”), pursuant to which (i) U.S. Sub is issuing and selling to the Initial Holders $210,000,000 aggregate principal amount of U.S. Sub’s 11% Senior Notes due 2013
(the “Notes”), the obligations of which shall be fully and unconditionally guaranteed by the Issuer, and (ii) the Issuer is issuing and selling to the Initial Holders Warrants (as defined below) to purchase up to 5,882,520
Common Shares (as defined below); and 
 WHEREAS, this Agreement sets forth terms and conditions applicable to the Warrants. 
 NOW, THEREFORE, the parties to this Agreement hereby agree as set forth below. 
 ARTICLE I 
 DEFINITIONS 
  

	1.1	DEFINITIONS. 

 (a) Capitalized terms used herein and
not otherwise defined shall have the meanings set forth in the Purchase Agreement. 
 (b) The following terms shall have the meanings set
forth below. 
 “Affiliate” of any Person means any other Person which directly or indirectly through one or more
intermediaries controls, or is controlled by, or is under common control with such Person. The term “control” (including the terms “controlled by” and “under common control with”) as used with respect to any Person
means the possession, directly or indirectly, of the power to direct or cause the direction of the management and policies of such Person, whether through the ownership of voting securities, by contract or otherwise. 
 “Agreement” shall mean this Agreement, together with all schedules and exhibits attached hereto, as amended, restated, supplemented or
otherwise modified from time to time in accordance with the terms hereof. 

 “Assignment Form” means the assignment form attached as Annex C to a Warrant.

 “Authorized Share Failure” has the meaning given to such term in Section 2.2. 
 “Bloomberg” means Bloomberg Financial Markets. 
 “Board” means the board of directors of the Issuer or any duly authorized committee thereof. 
 “Business Day” means a day other than a Saturday, Sunday or other day on which banking institutions in New York are authorized or required by law to close. “Buy-In” has the meaning given to such term in
Section 4.4(g). 
 “Buy-In Price” has the meaning given to such term in Section 4.4(g). 
 “Cash” means money, currency or a credit balance in a demand deposit account. 
 “Closing Bid Price” means, for any security as of any date, the last closing bid price, for such security on the Principal Market, as
reported by Bloomberg, or, if the Principal Market begins to operate on an extended hours basis and does not designate the closing bid price, then the last bid price of such security prior to 4:00:00 p.m., New York time, as reported by Bloomberg,
or, if the Principal Market is not the principal securities exchange or trading market for such security, the last closing bid price of such security on the principal securities exchange or trading market where such security is listed or traded as
reported by Bloomberg, or if the foregoing do not apply, the last closing bid price of such security in the over-the-counter market on the electronic bulletin board for such security as reported by Bloomberg, or, if no closing bid price is reported
for such security by Bloomberg, the average of the bid prices, of any market makers for such security as reported in the “pink sheets” by Pink Sheets LLC (formerly the National Quotation Bureau, Inc.). If the Closing Bid Price cannot be
calculated for a security on a particular date on any of the foregoing bases, the Closing Bid of such security on such date shall be the fair market value as mutually determined by the Issuer and the Holder. All such determinations are to be
appropriately adjusted for any stock dividend, stock split, stock combination or other similar transaction during the applicable calculation period. 
 “Common Shares” means the common shares of the Issuer, no par value. 
 “Company
Distribution” has the meaning given to such term in Section 5.4(b). 
  

 2 

 “Convertible Securities” means any Share Capital, evidence of Indebtedness or other
Securities or rights convertible into or exchangeable for Common Shares (including the Warrants). 
 “Delivery Date” has the
meaning given to such term in Section 4.4(a). 
 “Distribution” means, in respect of any Person, (a) the payment
or making of any dividend or other distribution of Property in respect of Share Capital of such Person or (b) the redemption or other acquisition of any Share Capital of such Person. 
 “DTC” means The Depository Trust Company. 
 “Effective Time” has the meaning given to such term in Section 4.3. 
 “Eligible Market” means the Principal Market, the American Stock Exchange, The New York Stock Exchange, Inc., The NASDAQ Global Market or The NASDAQ Capital Market. 
 “Encumbrance” means any mortgage, pledge, hypothecation, claim, charge, security interest, encumbrance, option, lien, put or call right,
right of first offer or refusal, proxy, voting right or other restrictions or limitations of any nature whatsoever, whether or not filed, recorded or otherwise perfected under applicable law, other than (a) those resulting from taxes which have
not yet become delinquent or (b) minor liens and encumbrances that do not materially detract from the value of the property or materially impair the operations of a Person or materially interfere with the use of such property or asset.

 “Exchange Form” means the exchange form attached as Annex B to a Warrant. 
 “Exercise Form” means the exercise form attached as Annex A to a Warrant. 
 “Exercise Number” has the meaning given to such term in Section 4.2. 
 “Exercise Price” means $0.01 per Warrant Share, subject to change from time to time in the manner provided in Article V. 
 “Expiration Time” means, with respect to any Holder, the earlier of (i) 5:00 p.m., Eastern daylight time, on the day immediately
preceding the fifth anniversary of the date of this Agreement, or August 19, 2013, and (ii) the Effective Time. 
  

 3 

 “Fair Market Value” means the fair market value of such Property or Security as
determined by the Board in the good faith exercise of its reasonable business judgment; provided, however, that if Holders of at least two-thirds of the then outstanding Warrants object to such determination by the Board by delivery of written
notice to the Issuer within thirty days of the date of determination, the Issuer and such Holders shall, within the thirty days after the delivery of such notice, attempt in good faith to resolve the objection. If the Issuer and such Holders are
unable to resolve the objection within the foregoing time period provided, the matter shall be arbitrated by an investment bank of nationally recognized standing to be agreed upon by the Issuer and the Holders (the “Independent
Auditor”). The determination of the fair market value of such Property or Security by the Independent Auditor shall be final, binding and non-appealable. The Issuer and the Holders shall instruct the Independent Auditor to render its
decision within thirty days of its selection. The fees and expenses of the Independent Auditor shall be borne by the party whose position was the farthest to the final resolution as determined by the Independent Auditor. Notwithstanding the
foregoing, if such Security is Publicly Traded or quoted at the time of determination, the Fair Market Value of such Security shall be the (x) in the case of calculations identified herein as “single-day Fair Market Value,” the
closing trading price of such security as of the trading day immediately prior to the date of determination, and (y) in all other cases, the volume weighted average trading price of such Security for the prior ten trading days immediately prior
to the date of determination. 
 “Fundamental Transaction” has the meaning given to such term in Section 5.3(a).

 “Governing Documents” means as to any Person, its articles or certificate of incorporation and by-laws, its partnership
agreement, its certificate of formation and operating agreement and/or the other organizational or governing documents of such Person. 
 “Governmental Authority” means (a) the government of the United States of America or any state or other political subdivision thereof, (b) the government of Canada or any province or other political subdivisions
thereof, (c) any government or political subdivision of any other jurisdiction in which the Issuer or any of the Subsidiaries conducts business, or which properly asserts jurisdiction over any and all real property (including all buildings,
fixtures or other improvements located thereon) now, hereafter or heretofore owned, leased, operated or used by the Issuer or the Subsidiaries, (d) any entity properly exercising executive, legislative, judicial, regulatory or administrative
functions of any such government or (e) any agency, authority, instrumentality, regulatory body, court, central bank or other entity exercising executive, legislative, judicial, taxing, regulatory or administrative functions of or pertaining to
government, any securities exchange and any self-regulatory organization. 
 “Holder” means with respect to any Warrant, the
holder of such Warrant as set forth in the Warrant Register. 
 “Indenture” means that certain indenture, dated as of the
date hereof, by and among the Issuer, as the guarantor of the Notes (as defined in the Purchase Agreement), U.S. Sub, certain subsidiary guarantors named therein and The Bank of New York Mellon Trust Company, N.A. as trustee, in substantially the
form attached to the Purchase Agreement as Exhibit A. 
  

 4 

 “Initial Holders” has the meaning set forth in the preamble to this Agreement.

 “Issuer” has the meaning set forth in the preamble to this Agreement. 
 “Notes” has the meaning given to such term in the preamble to this Agreement. 
 “Options” means any warrants, options or other rights to subscribe for or to purchase (a) Common Shares or (b) Convertible
Securities. 
 “Other Equity Documents” means the (a) the Warrant, (b) the Purchase Agreement, and (c) the
Registration Rights Agreement. 
 “Other Equity Securities” means any Share Capital, other than the Common Shares,
Convertible Securities or Options. 
 “Person” means an individual, a limited liability company, a partnership, a joint
venture, a corporation, a trust, an unincorporated organization, any other entity and a government or any department or agency thereof. 
 “Principal Market” means The NASDAQ Global Select Market. 
 “Property” means any interest in any
kind of property or asset, whether real, personal or mixed, or tangible or intangible. 
 “Publicly Traded” means, with
respect to any Security, that such Security is (a) listed on a U.S. securities exchange or (b) traded in the U.S. over-the-counter market, which trades are reported by the National Quotation Bureau, Incorporated or a similar successor
organization. 
 “Purchase Agreement” has the meaning given to such term in the preamble to this Agreement. 
 “Purchase Rights” has the meaning given to such term in Section 5.4(a). 
  

 5 

 “Registration Rights Agreement” means that certain registration rights agreement, dated
as of the date hereof, by and among the Issuer and the Initial Holders. 
 “Required Reserve Amount” has the meaning given
to such term in Section 2.2. 
 “Requisite Holders” means, as of any date of determination, Holders holding Warrants
representing at least a majority of the Warrant Shares that are issuable upon exercise of Warrants then outstanding; provided that any Warrants held by the Issuer or its Affiliates shall not be counted in either the numerator or the denominator of
the calculation of Requisite Holders. 
 “Security” or “Securities” has the meaning set forth in
Section 2(l) of the Securities Act. 
 “Securities Act” means the Securities Act of 1933, as amended. 
 “Share Capital” means any and all shares, interests, participations or other equivalents (however designated) of share capital of a
corporation, any and all equivalent ownership interests in a Person (other than a corporation), including, without limitation, partnership interests and membership interests, and any and all warrants, rights, or options to purchase or other
arrangements or rights to acquire any of the foregoing. 
 “Taxes” means all present or future taxes, levies, imposts,
duties, deductions, withholdings, assessments, fees or other charges imposed by any Governmental Authority, including any interest, additions to tax, penalties and any similar liabilities with respect thereto. 
 “Total Amount” has the meaning given to such term in Section 4.1(b). 
 “Trading Day” means any day on which the Common Shares are traded on the Principal Market, or, if the Principal Market is not the
principal trading market for the Common Shares, then on the principal securities exchange or securities market on which the Common Shares are then traded; provided that “Trading Day” shall not include any day on which the Common Shares are
scheduled to trade on such exchange or market for less than 4.5 hours or any day that the Common Shares are suspended from trading during the final hour of trading on such exchange or market (or if such exchange or market does not designate in
advance the closing time of trading on such exchange or market, then during the hour ending at 4:00:00 p.m., New York time). 
 “Transfer” means any sale, transfer, assignment, or other disposition of any interest in, with or without consideration, any security, including any disposition of any security or of any interest therein which would
constitute a sale thereof within the meaning of the Securities Act. 
  

 6 

 “Warrant” has the meaning given to such term in Section 3.1(a). 
 “Warrant Register” has the meaning given to such term in Section 3.1(b). 
 “Warrant Shares” has the meaning set forth in a Warrant. 
  

	1.2	RULES OF CONSTRUCTION. 

 The definitions in
Section 1.1 shall apply equally to the singular and plural forms of the terms defined. The words “include,” “includes” and “including” shall be deemed to be followed by the phrase “without limitation.”
The words “herein,” “hereof,” “hereunder” and other words of similar import refer to this Agreement as a whole, including the schedules and exhibits, as the same may from time to time be amended, restated, supplemented
or otherwise modified, and not to any particular section, subsection, paragraph, subparagraph or clause contained in this Agreement. All references to sections, schedules and exhibits mean the sections of this Agreement and the schedules and
exhibits attached to this Agreement, except where otherwise stated. The title of and the section and paragraph headings in this Agreement are for convenience of reference only and shall not govern or affect the interpretation of any of the terms or
provisions of this Agreement. The use herein of the masculine, feminine or neuter forms shall also denote the other forms, as in each case the context may require. Where specific language is used to clarify by example a general statement contained
herein, such specific language shall not be deemed to modify, limit or restrict in any manner the construction of the general statement to which it relates. Any reference to any term contained in any other agreement or other document shall be deemed
to be a reference to such term in the applicable agreement or document as in effect as of the date hereof, unless the Requisite Holders have consented to any amendment of such applicable agreement since the date hereof, in which case such reference
shall be deemed to be a reference to such term in the applicable agreement or document, as amended through the date of the most recent consent by the Requisite Holders. The language used in this Agreement has been chosen by the parties to express
their mutual intent, and no rule of strict construction shall be applied against any party. 
 ARTICLE II 
 ISSUANCE OF WARRANTS AND RESERVATION OF WARRANT SHARES 
  

	2.1	ISSUANCE OF WARRANTS TO INITIAL HOLDERS; WARRANT AGREEMENT. 

 The Issuer shall issue, sell and deliver the Warrants to the Initial Holders in accordance with the Purchase Agreement. The provisions of this Agreement shall apply to all Warrants (and, to the extent applicable, Warrant Shares), and each
Holder that is not a party to this Agreement, by its acceptance of a Warrant, agrees to be bound by the applicable provisions hereof. 
  

 7 

	2.2	RESERVATION OF WARRANT SHARES. 

 From and after the
date hereof, the Issuer shall at all times have authorized, and reserve and keep available, free from preemptive or similar rights, for the purpose of enabling it to satisfy any obligation to issue Warrant Shares upon the exercise or exchange of
each Warrant, the number of authorized but unissued Warrant Shares issuable upon exercise or exchange of all outstanding Warrants. The Issuer shall take all actions reasonably necessary to ensure that Warrant Shares shall be duly authorized and,
when issued upon exercise or exchange of any Warrant in accordance with the terms hereof, shall be validly issued, fully paid and non-assessable, free and clear of all Encumbrances (other than those created by the Holder thereof) and preemptive or
similar rights. If at any time while any Warrants remain outstanding the Issuer does not have a sufficient number of authorized and unreserved Common Shares to satisfy its obligation to reserve for issuance upon exercise of all outstanding Warrants
(the “Required Reserve Amount”) at least a number of Common Shares equal to the number of Common Shares as shall from time to time be necessary to effect the exercise of all Warrants then outstanding (an “Authorized Share
Failure”), then the Issuer shall promptly take all action reasonably necessary to increase the Issuer’s authorized Common Shares to an amount sufficient to allow the Issuer to reserve the Required Reserve Amount for all Warrants then
outstanding. Without limiting the generality of the foregoing sentence, as soon as reasonably practicable after the date of the occurrence of an Authorized Share Failure, but in no event later than seventy-five (75) days after the occurrence of
such Authorized Share Failure, the Issuer shall hold a meeting of its shareholders for the approval of an increase in the number of authorized Common Shares. In connection with such meeting, the Issuer shall provide each shareholder with a proxy
statement and shall use its reasonably best efforts to solicit its shareholders’ approval of such increase in authorized Common Shares and shall cause its Board to recommend to the shareholders that they approve such proposal. 
 ARTICLE III 
 CERTAIN ADMINISTRATIVE PROVISIONS

  

	3.1	FORM OF WARRANT; REGISTER. 

 (a) Each Warrant issued
hereunder in accordance with the Purchase Agreement shall be in the form of Exhibit A attached hereto (each, a “Warrant”) and shall be executed on behalf of the Issuer by the Chief Executive Officer, Chief Financial Officer,
President, any Vice President or the Chief Operating Officer of the Issuer. Upon initial issuance, each Warrant shall be dated as of the date of signature thereof by the Issuer. Irrespective of any adjustments in the Exercise Price or the number or
kind of Share Capital or other Property issuable upon the exercise of the Warrants, any Warrants theretofore or thereafter issued may, as a matter of form, continue to express the same Exercise Price and the same number of Warrant Shares issuable
upon the exercise of such Warrants as were stated in the Warrants initially issued pursuant the Purchase Agreement. 
  

 8 

 (b) Each Warrant issued, exchanged or transferred hereunder shall be registered in a warrant register
(the “Warrant Register”). The Warrant Register shall set forth (i) the number of each Warrant, (ii) the name and address of the Holder thereof, (iii) the original number of Warrant Shares purchasable upon the exercise
thereof, (iv) the number of Warrant Shares purchasable upon the exercise thereof, as adjusted from time to time in accordance with this Agreement and (v) the Exercise Price for each Warrant Share, as adjusted from time to time in
accordance with this Agreement. The Warrant Register will be maintained by the Issuer and will be available for inspection by any Holder at the principal office of the Issuer or such other location as the Issuer may designate to the Holders in the
manner set forth in Section 7.1. The Issuer shall be entitled to treat the Holder of any Warrant as the owner in fact thereof for all purposes and shall not be bound to recognize any equitable or other claim to or interest in such Warrant on
the part of any other Person. 
 (c) Each Holder understands that the certificates or other instruments representing the Warrants and, until
such time as the resale of the Warrant Shares have been registered under the Securities Act as contemplated by the Registration Rights Agreement and sold pursuant to such registration statement, the certificates representing the Warrant Shares,
except as set forth below, shall bear a restrictive legend in substantially the following form (and a stop-transfer order may be placed against transfer of such stock certificates): 
 THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE BEEN ACQUIRED FOR INVESTMENT AND NEITHER THE ISSUANCE AND SALE OF THE SECURITIES REPRESENTED BY THIS
CERTIFICATE NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE EXERCISABLE HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR APPLICABLE STATE SECURITIES LAWS. THE SECURITIES MAY NOT BE OFFERED FOR SALE, SOLD, TRANSFERRED OR
ASSIGNED (I) IN THE ABSENCE OF (A) AN EFFECTIVE REGISTRATION STATEMENT FOR THE SECURITIES UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR (B) A VALID EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF SAID ACT, WHICH MAY REQUIRE AN
OPINION OF COUNSEL AT THE OPTION OF THE ISSUER, OR (II) UNLESS SOLD PURSUANT TO RULE 144 OR RULE 144A UNDER SAID ACT. NOTWITHSTANDING THE FOREGOING, THE SECURITIES MAY BE PLEDGED IN CONNECTION WITH A BONA FIDE MARGIN ACCOUNT OR OTHER LOAN OR
FINANCING ARRANGEMENT SECURED BY THE SECURITIES. 
  

 9 

 In addition to the foregoing legend, the Warrants shall bear the following legend: 
 ADDITIONALLY, THE TRANSFER OF THESE SECURITIES IS SUBJECT TO THE CONDITIONS SPECIFIED IN (I) THE PURCHASE AGREEMENT, DATED JULY 9, 2008, AMONG THE
ISSUER, GSI GROUP CORPORATION AND THE PURCHASERS LISTED ON THE SIGNATURE PAGES THERETO, AND (II) THE WARRANT AGREEMENT, DATED AS OF AUGUST 20, 2008, AMONG THE ISSUER AND THE INITIAL HOLDERS LISTED ON THE SIGNATURE PAGES THERETO. COPIES OF SUCH
AGREEMENTS MAY BE OBTAINED AT NO COST BY WRITTEN REQUEST MADE BY THE HOLDER OF RECORD OF THIS CERTIFICATE TO THE SECRETARY OF THE ISSUER HEREOF. 
 The first legend set forth above shall be removed and the Issuer shall issue a stock certificate without such legend to a requesting holder of the Warrant Shares upon which it is stamped or at the Issuer’s discretion issue to such
holder by electronic delivery at the applicable balance account at The Depository Trust Company (“DTC”), if, unless otherwise required by state securities laws, (i) such Warrant Shares are registered for resale pursuant to an
effective registration statement under the Securities Act, (ii) in connection with a sale, assignment or other transfer, such holder provides the Issuer with an opinion of counsel, in a form reasonably acceptable to the Issuer, to the effect
that such sale, assignment or transfer of the Warrant Shares may be made without registration under the applicable requirements of the Securities Act, or (iii) such holder provides the Issuer with assurances reasonably acceptable to the Issuer
that the holder it is not an affiliate of the Issuer and has not been an affiliate for the prior 90 days that the Warrant Shares can be sold, assigned or transferred pursuant to Rule 144. The Issuer shall be responsible for the fees of its transfer
agent and all DTC fees associated with the issuance. Any request by a holder for the removal of the legend will be deemed to include a representation by such holder that the holder will only resell such Warrant Shares pursuant to an effective
registration statement or pursuant to a valid exemption from registration. 
  

	3.2	EXCHANGE OF WARRANTS FOR WARRANTS. 

 (a) The Holder
may exchange any Warrant issued hereunder for another Warrant of like kind and tenor representing in the aggregate the right to purchase the same number and class or series of Warrant Shares that could be purchased pursuant to the Warrant being so
exchanged. In order to effect an exchange permitted by this Section 3.2, the Holder shall deliver to the Issuer such Warrant accompanied by a written request signed by the Holder thereof specifying the number and denominations of Warrants to be
issued in such exchange and, subject to the transfer restrictions contained in the Other Equity Documents, the names in which such Warrants are to be issued. As promptly as practicable but in any event within five Business Days of receipt of such a
request, the Issuer shall, without charge, issue, register and deliver to the Holder thereof each Warrant to be issued in such exchange and make any necessary changes to the Warrant Register. 
 (b) Upon receipt of evidence reasonably satisfactory to the Issuer (an affidavit of the Holder being satisfactory) of the ownership and the loss, theft,
destruction or mutilation of any Warrant, and in the case of any such loss, theft or destruction, upon receipt of an indemnity bond reasonably satisfactory to the Issuer or, in the case of any such mutilation, upon surrender 

  

 10 

 
of such Warrant, the Issuer shall, without charge, issue, register and deliver in lieu of such Warrant a new Warrant of like kind representing the same
rights represented by, and dated the date of, such lost, stolen, destroyed or mutilated Warrant. Any such new Warrant shall constitute an original contractual obligation of the Issuer, whether or not the allegedly lost, stolen, mutilated or
destroyed Warrant shall be at any time enforceable by any Person. 
 (c) The Issuer shall pay all expenses and Taxes (other than any
applicable income or income-based, capital gains or similar Taxes payable by a Holder of a Warrant) attributable to an exchange of a Warrant pursuant to this Section 3.2; provided, however, that the Issuer shall not be required to pay any Tax
that may be payable in respect of any Transfer involved in the issuance of any Warrant in a name other than that of the Holder of the Warrant being exchanged. 
  

	3.3	MECHANICS OF TRANSFER OF WARRANTS. 

 (a) Subject to
the further provisions of this Agreement and the Other Equity Documents, each Warrant may be Transferred, in whole or in part, by the Holder thereof by delivering to the Issuer such Warrant accompanied by a properly completed, duly executed,
Assignment Form. As promptly as practicable but in any event within five (5) Business Days of receipt of such Assignment Form, the Issuer shall, without charge, issue, register and deliver to the Holder thereof a new Warrant of like kind and
tenor representing in the aggregate the right to purchase the same number of Warrant Shares that could be purchased pursuant to the Warrant being Transferred. 
 (b) At the request of the Issuer, any Person to whom a Warrant is Transferred in accordance with this Article III shall execute and deliver to the Issuer a joinder in the form of Annex C to the Warrant pursuant to
which such Person agrees to become a party to, and to be bound by the terms of and entitled to the benefits under this Agreement. 
 ARTICLE
IV 
 EXERCISE OF WARRANT; EXCHANGE FOR WARRANT SHARES 
  

	4.1	EXERCISE OF WARRANTS; EXPIRATION. 

 (a) On any
Business Day between 9 a.m. and 5 p.m. New York time on or prior to the Expiration Time, a Holder may exercise a Warrant, in whole or in part, by delivering to the Issuer such Warrant accompanied by a properly completed Exercise Form and
consideration in the form set forth in Section 4.1(b) in an aggregate amount equal to the product of (x) the Exercise Price and (y) the number of Warrant Shares being purchased. Any partial exercise of a Warrant shall be for a whole
number of Warrant Shares only. 
  

 11 

 (b) Upon exercise of a Warrant, in whole or in part, pursuant to this Section 4.1, the Holder
thereof shall deliver to the Issuer the aggregate Exercise Price: 
 (i) by wire transfer of immediately available funds to a
bank account designated by the Issuer or a certified check payable to the Issuer; 
 (ii) by surrender of a number Warrant
Shares having a Fair Market Value equal to the aggregate Exercise Price; or 
 (iii) a combination of the methods set forth in
clauses (i) and (ii). 
 (c) A Warrant shall terminate and become void as of the earlier of (x) the Expiration Time and
(y) the date such Warrant is exercised in full. 
  

	4.2	EXCHANGE FOR WARRANT SHARES. 

 (a) On any Business
Day between 9 a.m. and 5 p.m. New York time on or prior to the Expiration Time, a Holder may exchange a Warrant, in whole or in part, for Warrant Shares by delivering to the Issuer such Warrant accompanied by a properly completed Exchange Form. The
number of Warrant Shares to be received by a Holder upon such exchange shall be equal to the number of Warrant Shares allocable to the portion of the Warrant being exchanged (the “Exercise Number”), as specified by such
Holder in the Exchange Form, minus a number of Warrant Shares equal to the quotient obtained by dividing (i) the product of (x) the Exercise Price and (y) the Exercise Number by (ii) the Fair Market Value of one Warrant Share as
of the Delivery Date. 
 (b) The Issuer and each Holder intend that if any Holder exercises such Holder’s Warrant by surrendering
Warrant Shares as contemplated by Section 4.1(b)(ii), Section 4.2 or Section 4.3 hereof, such method of exercise shall be treated for U.S. federal income tax purposes as a “reorganization” pursuant to
Section 368(a)(1)(E) of the Internal Revenue Code of 1986, as amended. The Issuer and each Holder intend that such Holder (and its direct and indirect beneficial owners) will neither realize nor recognize any taxable income or gain as a result
of its exercise of the Warrant by such method. None of the parties hereto will take any position in their respective Tax or other financial or accounting filings that are contrary to or inconsistent with the foregoing. 
  

	4.3	EXERCISE AT EFFECTIVE TIME. 

 (a) If the Warrant has
not been exercised in full prior to the time and date as of which the shelf registration statement covering all Warrant Shares issuable upon exercise of the Warrants, as contemplated hereby, filed pursuant to the Registration Rights Agreement
becomes effective (the “Effective Time”), the Warrant shall be deemed to be automatically 

  

 12 

 
exercised at the Effective Time, on a cashless basis, with no action required on the part of the Holder in accordance with the immediately following
sentence. At the Effective Time, the number of Warrant Shares to be received by a Holder shall be equal to the aggregate number of Warrant Shares into which the Warrant held by the Holder immediately prior to the Effective Time was exercisable (the
“Total Number”) minus a number of Warrant Shares equal to the quotient obtained by dividing (i) the product of (x) the Exercise Price and (y) the Total Number by (ii) the Fair Market Value of one Warrant Share as
of the date of the Effective Time. 
  

	4.4	ISSUANCE OF WARRANT SHARES. 

 (a) Issuance of
Warrant Shares. If the Warrant is exercised pursuant to Section 4.1 or 4.2, as promptly as practicable but in any event within three (3) Trading Days following the delivery date (the “Delivery Date”) of (i) an
Exercise Form or Exchange Form in accordance with Section 4.1 or 4.2, (ii) the related Warrant and (iii) any required payment of the Exercise Price, the Issuer shall, without charge, upon compliance with the applicable provisions of
this Agreement, issue to such Holder one or more stock certificates or other appropriate evidence of ownership of the aggregate number of Warrant Shares to which the Holder of such Warrant is entitled and the other Securities or Property (including
any Cash) to which such Holder is entitled, in such denominations, and registered or otherwise placed in, or payable to the order of, such name as may be directed in writing by such Holder. If the Warrant is exercised pursuant to Section 4.3,
as promptly as practicable but in any event within three (3) Trading Days following the Effective Time, the Issuer shall, without charge, issue to such Holder one or more stock certificates or transmit electronically to such Holder the
aggregate number of Warrant Shares to which the Holder of such Warrant is entitled through the Deposit Withdrawal Agent Commission System of DTC, and deliver the other Securities or Property (including any Cash) to which such Holder is entitled, in
such denominations, and registered or otherwise placed in, or payable to the order of such Holder. The Issuer shall deliver such stock certificates or evidence of ownership and any other Securities or Property (including any Cash) to the Person
entitled to receive the same, together with an amount in Cash in lieu of any fraction of a Warrant Share (or fractional interest in any other Security), as hereinafter provided. 
 (b) Partial Exercise or Exchange. If a Holder shall exercise or exchange a Warrant for less than all of the Warrant Shares that could be purchased
or received thereunder, the Issuer shall issue, register and deliver to the Holder, as promptly as reasonably practicable but in any event within five Business Days following the Delivery Date, a new Warrant evidencing the right to purchase the
remaining Warrant Shares. In the case of an exchange pursuant to Section 4.2, the number of remaining Warrant Shares shall be the original number of Warrant Shares subject to the Warrant so exchanged reduced by the Exchange Number. Each Warrant
surrendered pursuant to Section 4.1 or 4.2 shall be cancelled. 
 (c) Fractional Shares. The Issuer shall not be required to
issue fractional Warrant Shares or fractional units of any other Security upon the exercise or exchange of a Warrant. If any fraction of a Warrant Share or fractional unit of any other Security would be issuable on the exercise or exchange of any
Warrant, the Issuer may, in lieu of issuing such 

  

 13 

 
fraction of a Warrant Share or fractional unit, pay to such Holder for any such fraction an amount in Cash equal to the product of (x) such fraction and
(y) the Fair Market Value for one Warrant Share or for a unit of such other Security, as the case may be, as of the Delivery Date. 
 (d) Expenses. The Issuer shall pay all expenses and Taxes attributable to the initial issuance of Warrant Shares upon the exercise or exchange of a Warrant, other than (i) any Tax that may be payable in respect of any Transfer
involved in the issuance of any Warrant or any certificate for, or any other evidence of ownership of, Warrant Shares in a name other than that of the Holder of the Warrant being exercised or exchanged and (ii) any applicable income or
income-based, capital gains or similar Taxes payable by a Holder of a Warrant. 
 (e) Record Ownership. To the extent permitted by
Applicable Laws, the Person in whose name any certificate for Warrant Shares or other evidence of ownership of any other Security is issued upon exercise or exchange of a Warrant shall for all purposes be deemed to have become the holder of record
of such Warrant Shares or other Security on the Delivery Date, irrespective of the date of delivery of such certificate or other evidence of ownership (subject, in the case of any exercise to which Section 5.3(a) applies, to the consummation of
a transaction upon which such exercise is conditioned), notwithstanding that the transfer books of the Issuer shall then be closed or that such certificates or other evidence of ownership shall not then actually have been delivered to such Person.

 (f) Listings. The Issuer shall from time to time take all action that may be reasonably necessary so that any Warrant Shares,
immediately upon their issuance upon exercise or exchange of Warrants, will be listed on the principal securities exchange, quotation system and market within the United States of America, if any, on which other Securities of the Issuer of the same
class or type are then listed or quoted. 
 (g) Issuer’s Failure to Timely Deliver Securities. In addition to all other remedies
available to the Holder, if within three (3) full Trading Days after the Issuer’s receipt of the facsimile copy of an Exercise Form or Exchange Form and the receipt by the Issuer of the Exercise Price, if applicable, following the Delivery
Date the Issuer shall fail to issue and deliver a certificate to the Holder and register such Common Shares on the Issuer’s share register or credit the Holder’s balance account with DTC for the number of Common Shares to which the Holder
is entitled upon the Holder’s exercise or exchange hereunder, and if on or after the Delivery Day the Holder purchases (in an open market transaction or otherwise) Common Shares to deliver in satisfaction of a sale by the Holder of Common
Shares issuable upon such exercise that the Holder anticipated receiving from the Issuer (a “Buy-In”), then the Issuer shall, within three (3) full Trading Days after the Holder’s request and in the Issuer’s
discretion, either (i) pay cash to the Holder in an amount equal to the Holder’s total purchase price (including brokerage commissions, if any) for the Common Shares so purchased (the “Buy-In Price”), at which point the
Issuer’s obligation to deliver such certificate (and to issue such Common Shares) or credit such Holder’s balance account with DTC shall terminate, or (ii) promptly honor its obligation to deliver to the Holder a certificate or
certificates representing such Common Shares or credit such Holder’s balance account with DTC and pay cash to the Holder in an amount equal to the excess (if any) of the Buy-In Price over the product of (A) such number of Common Shares,
times (B) the Closing Bid Price on the date of exercise. 
  

 14 

 ARTICLE V 
 ADJUSTMENT OF EXERCISE PRICE AND NUMBER OF WARRANT SHARES 
  

	5.1	GENERAL. 

 The Exercise Price and the number and
kind of Warrant Shares issuable upon exercise of each Warrant shall be subject to adjustment from time to time in accordance with this Article V. 
  

	5.2	DISTRIBUTIONS, SUBDIVISIONS AND COMBINATIONS. 

 (a)
If, at any time after the Closing Date, the Issuer shall: 
 (i) make a Distribution in Common Shares; or 
 (ii) combine its outstanding Common Shares into a smaller number of Common Shares; 
 then (A) the number of Warrant Shares issuable upon exercise of each Warrant shall be adjusted so as to equal the number of Warrant Shares that the Holder of such
Warrant would have held immediately after the occurrence of such event if the Holder had exercised such Warrant for Common Shares immediately prior to the occurrence of such event (or, in the case of clause (i), the record date therefor) and
(B) in the case of (ii), the Exercise Price shall be adjusted to be equal to the product of (x) the Exercise Price immediately prior to the occurrence of such event and (y) a fraction (1) the numerator of which is the number of
Warrant Shares issuable upon exercise of such Warrant immediately prior to the adjustment in clause (A) and (2) the denominator of which is the number of Warrant Shares issuable upon exercise of such Warrant immediately after the
adjustment in clause (A). An adjustment made pursuant to this Section 5.2(a) shall become effective immediately after the occurrence of such event retroactive to the record date, if any, for such event. 
 (b) If, at any time after the Closing Date, the Issuer shall subdivide, split or reclassify its outstanding Common Shares into a larger number of Common
Shares, the number of Warrant Shares issuable upon exercise of each Warrant shall be adjusted so as to equal the number of Warrant Shares that the Holder of such Warrant would have held immediately after the occurrence of such event if the Holder
had exercised such Warrant for Common Shares immediately prior to the occurrence of such event. An adjustment made pursuant to this Section 5.2(b) shall become effective immediately after the occurrence of such event retroactive to the record
date, if any, for such event. 
  

 15 

	5.3	CAPITAL REORGANIZATION, CAPITAL RECLASSIFICATION, MERGER, ETC. 

 (a) If, at any time after the Closing Date, (i) there shall be (A) any capital reorganization or any reclassification of the Share Capital of the Issuer (other than a change in par value or as a result of a
stock dividend, or as a result of a Distribution or subdivision, split-up or combination of Common Shares to which Section 5.2 applies); (B) any consolidation, merger or business combination of the Issuer with another Person; (C) any
sale or conveyance by the Issuer of all or substantially all of its assets or Property to another Person; (D) any conversion (statutory or otherwise) of the Issuer from a corporation to a different form of entity; (E) any purchase, tender
or exchange offer by a Person that is accepted by the holders of more than 50% of the outstanding Common Shares (not including any Common Shares held by the Person or Persons making or party to, or associated or affiliated with the Persons making or
party to, such purchase, tender or exchange offer); (F) any consummation of a stock purchase agreement or other business combination (including, without limitation, a reorganization, recapitalization, spin-off or scheme of arrangement) with
another Person whereby such other Person acquires more than 50% of the outstanding Common Shares (not including any Common Shares held by the other Person or other Persons making or party to, or associated or affiliated with the other Persons making
or party to, such stock purchase agreement or other business combination); or (G) any “person” or “group” (as these terms are used for purposes of Sections 13(d) and 14(d) of the Exchange Act) that become the
“beneficial owner” (as defined in Rule 13d-3 under the Exchange Act), directly or indirectly, of 50% of the aggregate ordinary voting power represented by issued and outstanding Common Shares (each, a “Fundamental
Transaction”) and (ii) the Fundamental Transaction shall be effected in such a way that holders of Common Shares shall be entitled to receive Securities, Cash or other Property with respect to or in exchange for Common Shares, then the
Issuer shall cause effective provision to be made so that, in lieu of the number of Warrant Shares issuable upon exercise of such Warrant, effective as of the effective date of such event retroactive to the record date, if any, of such event, such
Warrant shall be exercisable for the kind and number of Securities, Cash or other Property to which a holder of such number of Warrant Shares would have been entitled upon such event. In any such case, if necessary, the provisions of this Agreement
and the Warrants with respect to the rights and interests thereafter of the Holders of the Warrants shall be appropriately adjusted so as to be applicable, as nearly as may reasonably be, to any Securities, Cash or other Property thereafter
deliverable upon the exercise of the Warrants. 
 (b) The provisions of this Section 5.3 shall not operate as a waiver of any
restriction on any of the actions or transactions described above that may be contained in any other agreement or instrument, including the Other Equity Documents. 
  

 16 

	5.4	PURCHASE RIGHTS. 

 In addition to any adjustments
pursuant to Section 5.2 above: 
 (a) If at any time the Issuer grants, issues or sells any Options, Convertible Securities or rights to
purchase stock, warrants, securities or other property pro rata to the record holders of Common Shares (the “Purchase Rights”), then the Holders will be entitled to acquire, upon the terms applicable to such Purchase Rights, the
aggregate Purchase Rights that the applicable Holder could have acquired if the applicable Holder had held the number of Common Shares acquirable upon complete exercise of such Holder’s Warrant (without regard to any limitations on the exercise
of such Warrant) immediately before the date on which a record is taken for the grant, issuance or sale of such Purchase Rights, or, if no such record is taken, the date as of which the record holders of Common Shares are to be determined for the
grant, issue or sale of such Purchase Rights. 
 (b) If the Issuer shall declare or make any dividend or other distribution of its assets (or
rights to acquire its assets) to holders of Common Shares (other than a dividend or distribution as to which an adjustment would be made pursuant to Section 5.2(a)), by way of return of capital or otherwise (including, without limitation, any
distribution of cash, stock or other securities, property or options by way of a dividend, spin off, reclassification, corporate rearrangement, scheme of arrangement or other similar transaction) (a “Company Distribution”), at any
time after the issuance of the Warrants, then, in each such case, the Holders will be entitled to receive, upon the terms applicable to such Company Distribution, the aggregate Company Distribution that the applicable Holder would have received if
the applicable Holder had held the number of Common Shares acquirable upon complete exercise of such Holder’s Warrant (without regard to any limitations on the exercise of such Warrant) immediately before the date on which a record is taken for
the dividend or other distribution of its assets (or rights to acquire its assets) of such Company Distribution, or, if no such record is taken, the date as of which the record holders of Common Shares are to be determined for the dividend or other
distribution of its assets (or rights to acquire its assets) of such Company Distribution. 
  

	5.5	MISCELLANEOUS. 

 (a) Notice; Adjustment
Rules. Whenever the Exercise Price or the number of Warrant Shares shall be adjusted as provided in this Article V, the Issuer shall provide to each Holder a statement, signed by the Chief Executive Officer, Chief Financial Officer, President,
any Executive Vice President or the Chief Operating Officer of the Issuer, describing in detail the facts requiring such adjustment and setting forth a calculation of the Exercise Price and the number of Warrant Shares applicable to each Warrant
after giving effect to such adjustment. All calculations under this Article V shall be made to the nearest one thousandth of a cent ($.00001) or to the nearest one-thousandth of a share, as the case may be. Adjustments pursuant to this Article V
shall apply to successive events or transactions of the types covered thereby. Notwithstanding any other provision of this Article V, no adjustment shall be made to the number of Warrant Shares or to the Exercise Price if such adjustment represents
less than 1% of the number of Warrant Shares previously required to be so delivered, but any lesser adjustment shall be carried forward and shall be made at the time and together with the next subsequent adjustment which together with any
adjustments so carried forward shall amount to 1% or more of the number of Warrant Shares to be so delivered. 
  

 17 

 ARTICLE VI 
 COVENANTS OF THE ISSUER 
  

	6.1	NOTICES OF CERTAIN ACTIONS. 

 In the event that the
Issuer proposes to: 
 (a) authorize the issuance to holders of Share Capital of the Issuer of rights or warrants to subscribe for or
purchase Share Capital of the Issuer; 
 (b) authorize a Distribution to any holder of evidences of its Indebtedness, Cash or other Property;

 (c) become a party to any consolidation or merger for which approval of any holders of Share Capital of the Issuer will be required, or to
a conveyance or transfer of all or substantially all the Property of the Issuer; 
 (d) effect any capital reorganization or reclassification
of any Share Capital of the Issuer (other than a change in par value); 
 (e) commence a voluntary or involuntary dissolution, liquidation or
winding up of the Issuer; or 
 (f) take any other action which would result in an adjustment in the Exercise Price or the number of Warrant
Shares issuable upon exercise of the Warrants; 
 then the Issuer shall provide a written notice to each Holder stating (A) the date as of which the
holders of record of Share Capital of the Issuer to be entitled to receive any such rights or Distributions are to be determined, (B) the material terms of any such consolidation or merger and the expected effective date thereof or (C) the
material terms of any such conveyance, transfer, reorganization, reclassification, dissolution, liquidation or winding up, and the date as of which it is expected that holders of record of shares of Share Capital of the Issuer will be entitled to
exchange their Share Capital of the Issuer for Securities or other Property, if any, deliverable upon such conveyance, transfer, reorganization, reclassification, dissolution, liquidation or winding up. Such notice shall be given not later than
seven (7) Business Days prior to the effective date (or the applicable record date, if earlier) of such event. 
  

 18 

	6.2	MERGER AND CONSOLIDATION OF THE ISSUER. 

 The Issuer
will not (i) merge or consolidate with or into any other Person or (ii) sell, transfer or lease all or substantially all of its assets or Property (in either case in a transaction in connection with which holders of Share Capital of the
Issuer shall be entitled to receive with respect to or in exchange for such Share Capital, Securities of the successor or purchasing Person, Cash or other Property), unless, to the extent applicable, the successor or purchasing Person expressly
assumes, by supplemental agreement, the due and punctual performance and observance of each and every covenant and condition of this Agreement and the Registration Rights Agreement to be performed and observed by the Issuer. 
  

	6.3	NO AVOIDANCE. 

 The Issuer will not, by amendment of
its Governing Documents or through any reorganization, Transfer of Properties, consolidation, merger, dissolution, issue or sale of Securities or any other voluntary action, avoid or seek to avoid the observance or performance of any of the terms to
be observed or performed hereunder by the Issuer. The Issuer shall at all times in good faith assist in the carrying out of all the provisions of this Agreement and in the taking of all such action as may be necessary or appropriate in order to
protect the rights of the Holders hereunder against impairment. 
  

	6.4	SALE OF WARRANTS. 

 In any merger, consolidation,
reorganization, repurchase or reclassification or similar transaction, in which holders of Share Capital of the Issuer sell or otherwise Transfer Share Capital of the Issuer held by them, the Issuer will cause the transaction to be structured to
permit the Holders to deliver Warrants in connection with any such transaction without requirement for exercise thereof as a condition to participation and for consideration not less than the consideration such Holders would have received had such
Holders exercised their Warrants immediately prior thereto, less any applicable Exercise Price. 
  

 19 

 ARTICLE VII 
 MISCELLANEOUS 
  

	7.1	NOTICES. 

 All notices and other communications
provided for or permitted hereunder shall be made by hand-delivery, first-class mail, telecopier or overnight air courier guarantying next day delivery: 
 If to the Issuer, to: 
 125 Middlesex Turnpike 
 Bedford, Massachusetts 01730 
 Attention: General Counsel 
 Telephone No.: (781) 266-5786 
 Telecopier No.: (781) 266-5115 
 With a copy to: 
 Michael J. Zeidel, Esq. 
 Skadden, Arp, Slate, Meagher & Flom LLP 
 Four Times Square 
 New York, New York 10036 
 Telephone: 212-735-3259 
 Telecopier: 917-777-3259 
 If
to any Holder, to such Holder’s address as set forth on Schedule I hereto. 
 All such notices and communications 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 telecopied; and the next business day after
timely delivery to the courier, if sent by overnight air courier guarantying next day delivery. The parties may change the addresses to which notices are to be given by giving five days’ prior notice of such change in accordance herewith.

  

	7.2	NO VOTING RIGHTS; LIMITATION OF LIABILITY. 

 Except
as otherwise provided herein or in the Other Equity Documents, no Warrant shall entitle the holder thereof to any voting rights or any other rights as a stockholder of the Issuer, as such. No provision hereof, in the absence of affirmative action by
the Holder to purchase Warrant Shares, and no enumeration herein of the rights or privileges of the Holder shall give rise to any liability of such Holder for the Exercise Price of Warrant Shares acquirable by exercise hereof or as an equity holder
of the Issuer. 
  

	7.3	AMENDMENTS AND WAIVERS. 

 (a) Written
Document. Any provision of this Agreement may be amended or waived, but only pursuant to a written agreement signed by the Issuer and the Requisite Holders, provided that no such amendment or modification shall without the written consent of
each Holder affected thereby (i) shorten the Expiration Time of any Warrant, (ii) increase the Exercise Price of any Warrant, (iii) change any of the provisions of this Section 7.3(a) or the definition of Requisite
Holders or any other provision hereof specifying the number or percentage of Holders required to waive, amend, or modify any rights hereunder or required to make any determination or grant any consent hereunder or otherwise to act with
respect to this Agreement or any Warrants, (iv) change any of the provisions of Article V, (v) increase the obligations of any Holder or (vi) change any provision of Section 4.1, 4.2 or 4.3. 
  

 20 

 (b) No Waiver. No failure on the part of any Holder to exercise and no delay in exercising, and no
course of dealing with respect to, any right, power or privilege under this Agreement or the Warrants shall operate as a waiver thereof, nor shall any single or partial exercise of any right, power or privilege under this Agreement or the Warrant
preclude any other or further exercise thereof or the exercise of any other right, power or privilege. 
  

	7.4	REMEDIES. 

 Each Holder shall have all rights and
remedies reserved for such Holder pursuant to this Agreement, all rights and remedies which such Holder has been granted at any time under any other agreement or instrument and all of the rights and remedies such Holder may have at law or in equity.
The remedies provided herein are cumulative and not exclusive. Any Person having any rights under any provision of this Agreement will be entitled to enforce such rights specifically, to recover damages by reason of any breach of any provision of
this Agreement and to exercise all other rights granted by law or equity. 
  

	7.5	BINDING EFFECT. 

 Subject to the limitations set
forth in this Agreement and the Other Equity Documents, each Holder shall have the right to assign or otherwise Transfer its rights under this Agreement or any Warrants or Warrant Shares held by it. The Issuer shall not assign its rights or
obligations hereunder without the prior written consent of the Requisite Holders. This Agreement shall be binding upon and inure to the benefit of the Issuer, each Holder and their successors and permitted assigns. 
  

	7.6	COUNTERPARTS. 

 This Agreement may be executed in
any number of counterparts and by the parties hereto in separate counterparts, each of which when so executed shall be deemed to be an original and all of which taken together shall constitute one and the same agreement. 
  

	7.7	GOVERNING LAW; JURISDICTION AND VENUE. 

 (a) ALL
QUESTIONS CONCERNING THE CONSTRUCTION, INTERPRETATION AND VALIDITY OF THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE DOMESTIC LAWS OF THE STATE OF NEW YORK WITHOUT GIVING EFFECT TO ANY CHOICE OR CONFLICT OF LAW PROVISION OR
RULE (WHETHER OF THE STATE OF NEW YORK OR ANY OTHER JURISDICTION) THAT WOULD CAUSE THE APPLICATION OF THE LAWS OF ANY JURISDICTION OTHER THAN THE STATE OF NEW YORK. 
  

 21 

 (b) THE PARTIES TO THIS AGREEMENT AGREE THAT JURISDICTION AND VENUE IN ANY ACTION BROUGHT BY ANY PARTY
HERETO PURSUANT TO THIS AGREEMENT SHALL EXCLUSIVELY LIE IN ANY FEDERAL OR STATE COURT LOCATED IN THE COUNTY OF NEW YORK IN THE STATE OF NEW YORK. BY EXECUTION AND DELIVERY OF THIS AGREEMENT, THE PARTIES HERETO IRREVOCABLY SUBMIT TO THE JURISDICTION
OF SUCH COURTS FOR THEMSELVES AND IN RESPECT OF THEIR PROPERTY WITH RESPECT TO SUCH ACTION. THE PARTIES HERETO IRREVOCABLY AGREE THAT VENUE WOULD BE PROPER IN SUCH COURT, AND HEREBY WAIVE ANY OBJECTION THAT SUCH COURT IS AN IMPROPER OR INCONVENIENT
FORUM FOR THE RESOLUTION OF SUCH ACTION. 
 (c) THE ISSUER HEREBY AGREES THAT SERVICE UPON IT BY REGISTERED OR CERTIFIED MAIL (RETURN RECEIPT
REQUESTED) SHALL CONSTITUTE SUFFICIENT NOTICE. NOTHING HEREIN SHALL AFFECT THE RIGHT TO SERVE PROCESS IN ANY OTHER MANNER PERMITTED BY LAW OR SHALL LIMIT THE RIGHT OF THE HOLDERS TO BRING PROCEEDINGS AGAINST THE ISSUER IN THE COURTS OF ANY OTHER
JURISDICTION. 
  

	7.8	WAIVER OF JURY TRIAL. 

 EACH PARTY HERETO HEREBY
WAIVES ANY RIGHT TO TRIAL BY JURY OF ANY CLAIM, DEMAND, ACTION OR CAUSE OF ACTION (a) ARISING UNDER THIS AGREEMENT OR ANY OTHER EQUITY DOCUMENT OR (b) IN ANY WAY CONNECTED WITH OR RELATED OR INCIDENTAL TO THE DEALINGS OF THE PARTIES HERETO
OR ANY OF THEM IN RESPECT TO THIS AGREEMENT OR ANY OTHER EQUITY DOCUMENT, IN EACH CASE WHETHER NOW EXISTING OR HEREAFTER ARISING, AND WHETHER SOUNDING IN CONTRACT OR TORT OR OTHERWISE. EACH PARTY HERETO HEREBY AGREES AND CONSENTS THAT ANY SUCH
CLAIM, DEMAND, ACTION OR CAUSE OF ACTION SHALL BE DECIDED BY COURT TRIAL WITHOUT A JURY AND THAT ANY PARTY MAY FILE AN ORIGINAL COUNTERPART OR A COPY OF THIS AGREEMENT WITH ANY COURT AS WRITTEN EVIDENCE OF THE CONSENT OF THE PARTIES HERETO TO THE
WAIVER OF THEIR RIGHTS TO TRIAL BY JURY. 
  

	7.9	BENEFITS OF THIS AGREEMENT. 

 Nothing in this
Agreement shall be construed to give to any Person other than the Issuer and each Holder of a Warrant or a Warrant Share any legal or equitable right, remedy or claim hereunder. 
  

 22 

	7.10	HEADINGS. 

 The headings in this Agreement are for
convenience of reference only and shall not limit or otherwise affect the meaning hereof. 
  

	7.11	AGGREGATION OF WARRANTS AND WARRANT SHARES. 

 All
Warrants and Warrant Shares held or acquired by any Person and its Affiliates shall be aggregated together for purposes of measuring any numerical thresholds used in determining the availability to such Person and its Affiliates, taken collectively,
of rights under this Agreement and the applicability of obligations and restrictions under this Agreement. 
  

	7.12	SEVERABILITY. 

 If any provision of this Agreement
is prohibited by law or otherwise determined to be invalid or unenforceable by a court of competent jurisdiction, the provision that would otherwise be prohibited, invalid or unenforceable shall be deemed amended to apply to the broadest extent that
it would be valid and enforceable, and the invalidity or unenforceability of such provision shall not affect the validity of the remaining provisions of this Agreement so long as this Agreement as so modified continues to express, without material
change, the original intentions of the parties as to the subject matter hereof and the prohibited nature, invalidity or unenforceability of the provision(s) in question does not substantially impair the respective expectations or reciprocal
obligations of the parties or the practical realization of the benefits that would otherwise be conferred upon the parties. The parties will endeavor in good faith negotiations to replace the prohibited, invalid or unenforceable provision(s) with a
valid provision(s), the effect of which comes as close as possible to that of the prohibited, invalid or unenforceable provision(s). 
 * * *
* 
  

 23 

 IN WITNESS WHEREOF, each party hereto has caused this Warrant Agreement to be duly executed and delivered
by its authorized signatory, all as of the date and year first above written. 
  

			
	ISSUER:
	
	GSI GROUP INC.
		
	By:	 	/s/ Robert L. Bowen
		 	Name: Robert L. Bowen
		 	Title: Vice President and Chief Financial Officer

			
	INITIAL HOLDERS:
	
	HIGHBRIDGE INTERNATIONAL LLC
	
	 By: HIGHBRIDGE CAPITAL MANAGEMENT, LLC,
 its
Trading Manager

		
	By:	 	/s/ Adam J. Chill
	Name:	 	Adam J. Chill
	Title:	 	Managing Director

			
	TEMPO MASTER FUND LP
		
	By:	 	/s/ Andrew Barnard
	Name:	 	Andrew Barnard
	Title:	 	Portfolio Manager

			
	SILVER OAK CAPITAL, L.L.C
		
	By:	 	/s/ Michael L. Gordon
	Name:	 	Michael L. Gordon
	Title:	 	Managing Member

			
	 INTERLACHEN CONVERTIBLE INVESTMENTS LIMITED
 By: Interlachen Capital Group LP,
its Authorized Signatory

		
	By:	 	/s/ Gregg T. Colburn
	Name:	 	Gregg T. Colburn
	Title:	 	Authorized Signatory

			
	SPECIAL VALUE CONTINUATION PARTNERS, L.P.
		
	By:	 	Tennenbaum Capital Partners, LLC
	Its:	 	Investment Manager
	
	SPECIAL VALUE EXPANSION FUND, LLC
		
	By:	 	Tennenbaum Capital Partners, LLC
	Its:	 	Investment Manager
	
	TENNENBAUM OPPORTUNITIES PARTNERS V, LP
		
	By:	 	Tennenbaum Capital Partners, LLC
	Its:	 	Investment Manager
	
	SPECIAL VALUE OPPORTUNITIES FUND, LLC
		
	By:	 	Tennenbaum Capital Partners, LLC
	Its:	 	Investment Manager
	
	Each of the above by:
	
	/s/ Mark Holdsworth
	Name: Mark Holdsworth
	Title: Managing Partner

			
	HALE CAPITAL PARTNERS, LP
		
	By:	 	/s/ Anthony Cirurgiao
	Name:	 	Anthony Cirurgiao
	Title:	 	COO

			
	LIBERTY HARBOR MASTER FUND I, L.P.
	 By: Liberty Harbor I GP, LLC
 Its General
Partner

		
	By:	 	/s/ Brendan McGovern
	Name:	 	Brendan McGovern
	Title:	 	Vice President

			
	UBS O’CONNOR LLC F/B/O: O’CONNOR GLOBAL CONVERTIBLE ARBITRAGE MASTER LIMITED
		
	By:	 	/s/ Andrew Martin
	Name:	 	Andrew Martin
	Title:	 	Managing Director
	
	UBS O’CONNOR LLC F/B/O: O’CONNOR GLOBAL CONVERTIBLE ARBITRAGE II MASTER LIMITED
		
	By:	 	/s/ Andrew Martin
	Name:	 	Andrew Martin
	Title:	 	Managing Director

 Schedule I 
 Name and Address of Initial Holder 
 Tempo Master Fund LP 
 c/o JD Capital 
 Two Greenwich Plaza, 2nd Floor 
 Greenwich CT 06830 
 Attn: Don McCarthy, CFO 
 Hale Capital Partners, LP 
 c/o Hale Fund Management 
 304 Newbury Street, Ste. 329 
 Boston, MA 02115 
 Attn: Anthony Cirurgiao and Martin Hale 
 Fax: (212) 629-2027 

Interlachen Convertible Investments Limited 
 c/o Interlachen Capital
Group LP 
 800 Nicollet Mall, Suite 2500 
 Minneapolis, MN 55402

 Attn: Gregg T. Colburn and Legal 
 Fax: (612) 659-4457

 Special Value Opportunities Fund, LLC 
 Special Value
Expansion Fund, LLC 
 Special Value Continuation Partners, LP 
 Tennenbaum Opportunities Partners V, LP 
 2951 28th Street, Suite 1000 
 Santa Monica, CA 90405 
 Fax: (310) 566-1010 
 Silver Oak Capital, L.L.C. 
 245 Park Avenue, 26th Floor 
 New York, NY 10167 
 Attn: Gary I. Wolf 
 Fax: (212) 867-6395 
 Highbridge International LLC 
 c/o Highbridge Capital Management, LLC 
 9 West 57th Street, 27th Floor 
 New York, New York 10019 
 Attn: Ari J. Storch and Adam J. Chill 
 Fax: (212) 751-0755 

 UBS O’Connor LLC F/B/O: O’Connor Global Convertible Arbitrage Master Limited 
 UBS O’Connor LLC F/B/O: O’Connor Global Convertible Arbitrage II Master Limited 
 c/o UBS Alternative and Quantitative Investments LLC 
 UBS Tower 
 One North Wacker Drive 
 Chicago, IL 60606 
 Attn: Rob Murray 
 Fax: (312) 525-6271 
 Each of the above Initial Holders with a copy to: 
 Milbank, Tweed, Hadley & McCloy LLP 
 Attn: Melainie K. Mansfield 
 601 S. Figueroa St., 30th Floor 
 Los Angeles, CA 90017 
 Fax: (213) 892-4711 
 Liberty Harbor Master Fund I, L.P. 
 c/o Liberty Harbor I GP, LLC 
 1 New York Plaza 
 New York, NY 10004 
 Attn: Brendan McGovern 
 Fax: (646) 835-3510 
 With a copy to Schulte Roth & Zabel LLP 
 919 Third Avenue 
 New York, New York 10022

 Attn: Eleazer N. Klein, Esq. 
 Fax: (212) 593-5955 
 With additional copies to: am-cred-midoffice@ny.email.gs.com and jonathan.lamm@gs.com 

 Exhibit A 
 THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE BEEN ACQUIRED FOR INVESTMENT AND NEITHER THE ISSUANCE AND SALE OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE
EXERCISABLE HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR APPLICABLE STATE SECURITIES LAWS. THE SECURITIES MAY NOT BE OFFERED FOR SALE, SOLD, TRANSFERRED OR ASSIGNED (I) IN THE ABSENCE OF (A) AN EFFECTIVE
REGISTRATION STATEMENT FOR THE SECURITIES UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR (B) A VALID EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF SAID ACT, WHICH MAY REQUIRE AN OPINION OF COUNSEL AT THE OPTION OF THE ISSUER, OR (II) UNLESS
SOLD PURSUANT TO RULE 144 OR RULE 144A UNDER SAID ACT. NOTWITHSTANDING THE FOREGOING, THE SECURITIES MAY BE PLEDGED IN CONNECTION WITH A BONA FIDE MARGIN ACCOUNT OR OTHER LOAN OR FINANCING ARRANGEMENT SECURED BY THE SECURITIES. 
 ADDITIONALLY, THE TRANSFER OF THESE SECURITIES IS SUBJECT TO THE CONDITIONS SPECIFIED IN (I) THE PURCHASE AGREEMENT, DATED JULY 9, 2008, AMONG THE ISSUER, GSI GROUP
CORPORATION AND THE PURCHASERS LISTED ON THE SIGNATURE PAGES THERETO, AND (II) THE WARRANT AGREEMENT, DATED AS OF AUGUST 20, 2008, AMONG THE ISSUER AND THE INITIAL HOLDERS LISTED ON THE SIGNATURE PAGES THERETO. COPIES OF SUCH AGREEMENTS MAY BE
OBTAINED AT NO COST BY WRITTEN REQUEST MADE BY THE HOLDER OF RECORD OF THIS CERTIFICATE TO THE SECRETARY OF THE ISSUER HEREOF. 
  

 A-1 

 GSI GROUP INC. 
  

			
	No.	  	August 20, 2008

 COMMON SHARES PURCHASE WARRANT 
 THIS CERTIFIES that, for value received,              (the “Holder”),
or its assigns, is entitled to purchase from GSI Group Inc., a company continued and existing under the laws of the Province of New Brunswick, Canada (the “Issuer”),
             common shares (“Warrant Shares”), no par value, of the Issuer, at the price (the “Exercise Price”) of $0.01 per share, at any time or
from time to time during the period commencing on the date hereof and ending at 5:00 p.m., Eastern daylight time, on August 19, 2013 (the “Expiration Time”); provided, however, that if the Warrant has not been
exercised in full prior to the time and date as of which any shelf registration statement filed pursuant to the Registration Rights Agreement becomes effective (the “Effective Time”), the Warrant shall be deemed to be automatically
exercised at the Effective Time, on a cashless basis, with no action required on the part of the Holder in accordance with Section 4.3 of the Warrant Agreement. 
 The Holder may exercise all or any part of such rights at any time or from time to time prior to the Expiration Time, subject to the automatic exercise of this Warrant at the Effective Time. 
 This Warrant has been issued pursuant to the Warrant Agreement dated as of August 20, 2008 (as amended, restated, supplemented or otherwise modified
from time to time, the “Warrant Agreement”), among the Issuer and the Holders named therein, and is subject to the terms and conditions, and the Holder is entitled to the benefits, thereof. A copy of the Warrant Agreement is on file
and may be inspected at the principal executive office of the Issuer. The Holder of this certificate, by acceptance of this certificate, agrees to be bound by the provisions of the Warrant Agreement. Capitalized terms used but not defined herein
shall have the respective meanings given to such terms in the Warrant Agreement. 
 SECTION 1. Exercise of Warrant. On any day on or
prior to the Expiration Time, the Holder may exercise this Warrant, in whole or in part, in the manner set forth in Article IV of the Warrant Agreement, subject to the automatic exercise of this Warrant at the Effective Time. 
 SECTION 2. Exercise Price. The Exercise Price is subject to adjustment from time to time as set forth in the Warrant Agreement. 
 SECTION 3. Exchange of Warrant. On any day on or prior to the Expiration Time, subject to the automatic exercise of this Warrant at the Effective
Time, the Holder may exchange this Warrant, in whole or in part, for Warrant Shares by delivering to the Issuer this Warrant accompanied by a properly completed Exchange Form in the form of Annex B attached hereto. The number of Warrant Shares to be
received by the Holder upon such exchange shall be determined as set forth in the Warrant Agreement. 
  

 A-2 

 SECTION 4. Transfer. Subject to the limitations set forth or referred to in the Warrant Agreement,
this Warrant may be Transferred by the Holder by delivery to the Issuer of this Warrant accompanied by a properly completed Assignment Form in the form of Annex C attached hereto. 
 SECTION 5. Lost, Stolen, Mutilated or Destroyed Warrant. If this Warrant is lost, stolen, mutilated or destroyed, the Issuer will issue a new
Warrant of like denomination and tenor upon compliance with the provisions set forth in the Warrant Agreement. 
 SECTION 7.
Successors. All of the provisions of this Warrant by or for the benefit of the Issuer or the Holder shall bind and inure to the benefit of their respective successors and permitted assigns. 
 SECTION 8. Headings. Section headings in this Warrant have been inserted for convenience of reference only and shall not affect the construction
of, or be taken into consideration in interpreting, this Warrant. 
 SECTION 9. GOVERNING LAW. THIS WARRANT SHALL BE GOVERNED BY AND
CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK (WITHOUT GIVING EFFECT TO PRINCIPLES OF CONFLICTS OF LAWS EXCEPT TO THE EXTENT THAT THE NEW YORK CONFLICTS OF LAWS PRINCIPLES WOULD APPLY THE APPLICABLE LAWS OF THE STATE OF THE
ISSUER’S ORGANIZATION TO INTERNAL MATTERS RELATING TO ENTITIES SUCH AS THE ISSUER ORGANIZED THEREUNDER). 
  

 A-3 

 IN WITNESS WHEREOF, the undersigned has caused this Warrant to be executed by its duly authorized
officers and this Warrant to be dated as of the date first set forth above. 
  

			
	GSI GROUP INC.
		
	By:	 	 
		 	Name:
		 	Title:

 Annex A to the Warrant 
 EXERCISE FORM 
 [To be signed upon exercise of a Warrant] 
 TO GSI GROUP INC. 
 The undersigned, being the Holder of the
attached Warrant, hereby elects to exercise, pursuant to Section 4.1 of the Warrant Agreement referred to in such Warrant, the purchase right represented by such Warrant for, and to purchase thereunder
             common shares (the “Warrant Shares”) of GSI Group Inc., a company continued and existing under the laws of the Province of New Brunswick, Canada (the
“Issuer”) and to make payment in full for the Warrant Shares so purchased by payment of $             by: 
  ̈ wire transfer of immediately available funds to a bank account to be designated by the Issuer, 
  ̈ a certified check payable to the Issuer; and/or 
  ̈ surrender of common shares of the Issuer having a Fair Market Value equal
$            . 
 The undersigned hereby requests that the certificates or
other evidence of ownership for such shares be issued in the name of, and be delivered to, ___________________________________, whose address is____________________________________ 
 _______________________________________________________________________. 
 The undersigned warrants to the
Issuer that the undersigned (a) is not acquiring the Warrant Shares with a view to Transferring such Warrant Shares in violation of the Securities Act of 1933, as amended (the “Securities Act”) and (b) acknowledges that
the issuance of the Warrant Shares has not been registered under the Securities Act and that the Warrant Shares may be resold only if registered pursuant to the provisions of the Securities Act or if an exemption therefrom is available. 

 

					
			
	Dated: ___________________________	 		 	  
		 		 	Name:
		 		 	Title:

 Annex B to the Warrant 
 EXCHANGE FORM 
 [To be signed upon exchange of a Warrant] 
 TO GSI GROUP INC. 
 The undersigned, being the Holder of the
within Warrant, hereby elects to exchange, pursuant to Section 4.2 of the Warrant Agreement referred to in such Warrant, the portion of such Warrant representing the right to purchase ______________ common shares (“Warrant
Shares”) of GSI Group Inc., a company continued and existing under the laws of the Province of New Brunswick, Canada (the “Issuer”). The undersigned hereby requests that the certificates or evidence of ownership for the
number of shares issuable in such exchange pursuant to such Section 4.2 be issued in the name of, and be delivered to, __________________ ___________________________, whose address is _________________________________________________________.

 The undersigned warrants to the Issuer that the undersigned (a) is not exchanging the Warrant Shares with a view to Transfer such
Warrant Shares in violation of the Securities Act of 1933, as amended (the “Securities Act”) and (b) acknowledges that the issuance of the Warrant Shares has not been registered under the Securities Act and that the Warrant
Shares may be resold only if registered pursuant to the provisions of the Securities Act or if an exemption therefrom is available. 
  

					
			
	Dated: ____________________	 		 	  
		 		 	Name:
		 		 	Title:

 Annex C to the Warrant 
 ASSIGNMENT FORM 
 [To be signed only upon transfer of a Warrant] 
 For value received, the undersigned hereby sells, assigns and transfers unto __________________________, all of the rights represented by the within
Warrant to purchase _________________ common shares of GSI Group Inc., a company continued and existing under the laws of the Province of New Brunswick, Canada (the “Issuer”), to which such Warrant relates, and appoints
_____________________ attorney to transfer such Warrant on the books of the Issuer, with full power of substitution in the premises. 
  

					
			
	Dated: ____________________	 		 	  
		 		 	Name:
		 		 	Title:

 By executing and delivering this Assignment Form to the Issuer, the undersigned hereby agrees to
become a party to, to be bound by, and to comply with the provisions of the Warrant Agreement dated as of August 20, 2008 (as amended, restated, supplemented or otherwise modified from time to time, the “Warrant Agreement”),
among the Issuer and the Holders, in the same manner as if the undersigned were an original signatory to the Warrant Agreement. 
 The
undersigned agrees that he, she or it shall be a “Holder,” as such term is defined in the Warrant Agreement. 
  

					
			
	Dated: ________________________	 		 	  
		 		 	Signature of transferee
			
		 		 	 
		 		 	Print Name of transferee
			
		 		 	 
			
		 		 	 
		 		 	Address
			
		 		 	 
		 		 	Facsimile
			
		 		 	 
		 		 	Telephone

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