Amended and Restated Lease dated May 1, 2012 by and between GSI Group Inc.



 Exhibit 10.1 
 LEASE 
 ARTICLE I 

Reference Data 
 1.1 Recitals. 
 WHEREAS, Landlord and Tenant (as such terms
are defined below), entered into that certain Lease dated as of November 2, 2007, as amended by that certain First Amendment to Lease dated as of February 11, 2010 (as so amended, the “Original Lease”); 

WHEREAS, Landlord and Tenant desire to amend and restate the Original Lease in its entirety and to reflect certain
additional modifications to which the parties have agreed, as more particularly set forth herein; 
 NOW
THEREFORE, in consideration of the mutual covenants contained herein and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged by the parties, Landlord and Tenant hereby enter into the following Amended
and Restated Lease (the “Lease”); from and after the A&R Effective Date (as defined below), this Lease shall replace and supersede the Original Lease, which shall be of no further force or effect except as specifically incorporated
herein by reference. 
 1.2 Subjects Referred To. Each reference in this Lease to any of the following subjects shall be
construed to incorporate the following data. 
  

			
	AMENDED AND RESTATED EFFECTIVE DATE:	  	May 1, 2012 (also referred to as the “A&R Effective Date”)
		
	PREMISES:	  	A certain parcel of land (the “Land”), with the building containing approximately 147,371 rentable square feet (129,419 rentable square feet on the main floor and 17,952
rentable square feet on the lower level) and improvements which are now or shall hereafter be located thereon (the “Building”), commonly known as and numbered 125 Middlesex Turnpike, Bedford, Middlesex County, Massachusetts more
particularly described in Exhibit A attached hereto, together with the rights and easements appurtenant thereto.
		
	LANDLORD:	  	125 Middlesex Turnpike, LLC, a Delaware limited liability company
		
	ORIGINAL ADDRESS OF LANDLORD	  	c/o Mohawk Partners, 104 Park Lane, Concord, MA 01742


  
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	TENANT:	  	GSI Group Corporation
		
	ORIGINAL ADDRESS OF TENANT:	  	125 Middlesex Turnpike, Bedford, MA 01730
		
	TERM:	  	The period commencing on the Commencement Date and ending on the last day of the month in which occurs the seventh (7th) anniversary of the A&R Effective Date (the “Initial
Term”), with two successive five (5) year extension options (each an “Extension Term” and collectively, the “Extension Terms”) pursuant to Section 2.3. As used herein, the capitalized word “Term” shall be deemed to
refer to the Initial Term of the Lease, as the same may be extended by any applicable Extension Term(s) or sooner terminated in accordance with the provisions hereof.
		
	COMMENCEMENT DATE:	  	As defined in the Original Lease.
		
	ANNUAL RENT:	  	From the Rent Commencement Date to the A&R Effective Date, Annual Rent shall be as set forth in the Original Lease. From the A&R Effective Date through the end of the
Initial Term, Annual Rent shall be $1,510,552.75 per annum, payable in monthly installments of $125,879.40.
		
	PERMITTED USES:	  	Tenant may use the Premises for business and professional offices, light manufacturing, research, parking facility and/or warehouse purposes (as such terms are defined in the Town
of Bedford Zoning Bylaws as in effect on the Effective Date) and any other use permitted under the Town of Bedford Zoning Bylaws.
		
	TENANT IMPROVEMENTS:	  	The alterations, additions, installations and improvements to the Premises which Tenant may deem to be necessary or appropriate in order to prepare the Premises for Tenant’s
continued occupancy.
		
	TENANT IMPROVEMENTS ALLOWANCE AND HVAC REMEDIATION ALLOWANCE:	  	Up to $875,000, per the Work Letter attached as Exhibit B. In addition, up to $25,000 for HVAC remediation allowance, pursuant to applicable provisions of the Work Letter
attached hereto as Exhibit B.
		
	RENT COMMENCEMENT DATE:	  	January 1, 2008.
		
	RENT PERIOD:	  	The period commencing on the Rent Commencement Date and ending on expiration of the Initial Term.


  
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 1.3 Exhibits and Schedule(s). The exhibits and schedule(s) listed
below are attached hereto and incorporated in this Lease by reference and are to be construed as a part of this Lease: 
 Exhibit
A - Description of Premises 
 Exhibit B - Work Letter 
 Exhibit C - Permitted Encumbrances 
 Exhibit D - Parking Plan 

Exhibit E - Plan of Operationally Sensitive Areas 
 Schedule 4.1(b) - Environmental Reports 
 ARTICLE II 

Premises and Term 
 2.1 Premises. Landlord hereby leases to Tenant and Tenant hereby leases from Landlord, subject to and with the benefit of the terms, covenants, conditions and provisions of this Lease, the
Premises. 
 2.2 Term and Extension Options. TO HAVE AND TO HOLD for the Initial Term. 

2.3 Option to Extend. The Tenant shall have the option, to be exercised as hereinafter provided, to extend the Term
of this Lease for two (2) successive periods of five (5) years each (the “Extension Terms”) following the expiration of the Initial Term, upon the condition that there is no then existing default by Tenant in the performance of
any condition of this Lease beyond any applicable notice or grace period. Each Extension Term shall be upon the same terms and conditions as provided in this Lease, except for the Annual Rent which shall be equal to the “Fair Market Rental
Value” of the Premises for the applicable Extension Term, as determined pursuant to the terms of this Section 2.3. If Tenant desires to exercise this option, it shall do so by giving written notice to Landlord no earlier than eighteen
(18) months or later than 

  
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fifteen (15) months prior to the expiration of the Initial Term, or, if this Lease has previously been extended pursuant to this section, no earlier than eighteen (18) months or later
than fifteen (15) months prior to the expiration of the first Extension Term. Tenant shall not have the option to extend the Term for more than two (2) Extension Terms. If Landlord and Tenant reach agreement regarding Annual Rent payable
during the applicable Extension Term, they shall memorialize such agreement in an amendment to this Lease entered into on or before the date that is twelve (12) months prior to expiration of the Initial Term (or First Extension Term, as
applicable) (the “Arbitration Date”). If Landlord and Tenant have not reached agreement regarding Annual Rent, then Tenant shall have the right to rescind its exercise of the extension option by delivering to Landlord prior to the
Arbitration Date a notice stating that it has rescinded its exercise (the “Rescission Notice”). If by the Arbitration Date, no amendment memorializing Annual Rent has been executed and Tenant has not delivered the Rescission Notice, then
the exercise of the extension option shall be non-rescindable and the Annual Rent shall be determined as set forth below in this Section 2.3. 
 The Annual Rent for the Extension Terms shall be equal to ninety-five percent (95%) of the “Fair Market Rental Value” of the Premises for the applicable Extension Term, but in no event
shall it be less than the Annual Rent payable hereunder during the last year of the prior Term, or if applicable, Extension Term. The Fair Market Rental Value for the Premises shall be the estimated fair rental value of the Premises calculated as of
the commencement of the applicable Extension Term, based on all the terms and conditions hereof, including without limitation, the length of such Extension Term and the value of similar space in buildings of similar size, location and quality within
a five-mile radius of the Premises, such Fair Market Rental Value to reflect terms being negotiated in leases or reflected in leases that have been 

  
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executed in arm’s length transactions between willing landlords and willing tenants, each acting in its own best interest and without duress, and will take into consideration tenant
improvements and other landlord concessions. Fair Market Rental Value shall be calculated on the then “as is” condition of the Premises. If Tenant sends the notice exercising its option to extend referred to in the previous paragraph,
Landlord shall reasonably and in good faith determine Fair Market Rental Value and shall set forth its determination in a notice to Tenant sent at least eleven (11) months prior to the commencement of any Extension Term. Within thirty
(30) days thereafter, Tenant shall give Landlord notice whether Tenant will (a) extend this Lease for an Extension Term at 95% of the Fair Market Rental Value as determined by Landlord (or, if higher, at the rate previously in effect), or
(b) require that the Fair Market Rental Value be determined by appraisal. Failure of Tenant to give notice to Landlord within thirty (30) days of Landlord’s notice of Fair Market Rental Value shall be deemed an election by Tenant to
require that Fair Market Rental Value be determined by appraisal. In the event that Tenant requires or is deemed to have required that the Fair Market Rental Value be determined by appraisal, Fair Market Rental Value of the Premises for the
applicable Extension Term shall be determined for the parties by three appraisers, one selected by Landlord, one selected by Tenant, and one selected by the persons so selected by Landlord and Tenant. Tenant shall give notice to Landlord of the name
of its appraiser within thirty-five (35) days after Landlord sends to Tenant Landlord’s determination of Fair Market Rental Value as provided above, with Tenant’s failure to designate its appraiser within such 35-day period being
deemed to be an acceptance by Tenant of the rent rate proposed by Landlord. Landlord shall name its appraiser within thirty (30) days after receipt of Tenant’s designation of Tenant’s appraiser. Within thirty (30) days after
Landlord names its appraiser, the two appraisers so chosen shall appoint a third appraiser, which appraiser shall not 

  
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have acted in any capacity for either Landlord or Tenant. Each of Landlord’s and Tenant’s appraisers shall determine their respective valuations of the Fair Market Rental Value of the
Premises (each, an “Appraisal”, collectively, the “Appraisals”) within twenty (20) days after the selection of the third appraiser, and shall submit their Appraisals to the third appraiser. The third appraiser shall select
the Appraisal which is closest to the third appraiser’s own determination of Fair Market Rental Value. Each appraiser shall have a minimum of ten (10) years’ experience appraising commercial office buildings in the Boston/Route 128
metropolitan area and shall be a member of the American Institute of Real Estate Appraisers, the Society of Real Estate Appraisers, or the Society of Real Estate Counselors or comparably accredited. Landlord and Tenant shall pay the cost of the
appraiser chosen by each of them. The cost of the third appraiser shall be shared equally by Landlord and Tenant. Except as provided above, all of the terms, covenants and agreements contained in this Lease shall continue during the Extension Term.

 Time is of the essence with respect to the provisions of this Section 2.3. 

ARTICLE III 

Rent 
 3.1 Annual Rent. Commencing on the Rent Commencement Date, Tenant covenants and agrees to pay rent to Landlord at the Original Address of Landlord or such other place as Landlord may by notice in
writing to Tenant from time to time direct during the Term of this Lease, the Annual Rental for the respective period set forth in Section 1.1 hereof. Except as provided in Section 1.1 hereof, all rental payments are payable in equal
monthly installments in advance on the first day of each calendar month included in the Rent Period and Extension Terms, if exercised; and for any portion of a calendar month at the beginning or end of the Rent Period and the Extension Terms if
exercised, at the applicable rate payable in advance prorated for the number of days in such portion. 

  
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 3.2 Additional Rent. From and after the Rent Commencement Date, in
order that the Annual Rent shall be absolutely net to Landlord (except as otherwise expressly set forth herein with respect to Landlord’s obligation to (a) replace the HVAC Units (as such term is defined and as more particularly set forth
in Section 4.1(c) below); (b) pay the cost attributable to any liability insurance carried by Landlord (as set forth in Section 3.2(d)(i) below); and (c) provide the Tenant Improvements Allowance and the HVAC Remediation
Allowance (as more particularly set forth in Section 1.2 above and Exhibit B attached hereto), Tenant covenants and agrees to pay, as additional rent (“Additional Rent”), from and after the Rent Commencement Date, all real
estate taxes, betterment assessments, insurance costs, and utilities charges with respect to the Premises as provided in this Section 3.2 as follows: 
 (a) Real Estate Taxes. Tenant shall pay, directly to the authority charged with collection thereof, the full amount of all taxes levied or assessed after the Rent Commencement Date by the
municipality or any governmental authority having jurisdiction of the Premises, for or in respect of the Premises or which may become a lien on the Premises, for each tax period wholly included in the Rent Period and, if exercised, the Extension
Terms, all such payments to be made not less than five (5) days prior to the last date on which the same may be paid without interest or penalty or fifteen (15) days after Tenant’s receipt of the tax bill, whichever is later. Landlord
shall promptly furnish Tenant with copies of all bills for taxes levied or assessed after the Rent Commencement Date, and, unless prohibited from doing so by any mortgagee of the Premises, shall request such municipality or governmental authority to
send all bills for taxes directly to Tenant. With respect to any fraction of a tax period included in the Rent Period or, if 

  
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exercised, the Extension Terms, at the beginning or end thereof, Tenant shall pay to Landlord, within fifteen (15) days after receipt of a reasonably detailed invoice therefor, the fraction
of taxes so levied or assessed or becoming payable which is allocable to such included period. Tenant shall promptly furnish Landlord with reasonable evidence of each such payment. If Tenant shall deem itself aggrieved by any such tax or charge and
shall elect to contest the payment thereof or seek abatement thereof, Tenant may make such payment under protest. Either party paying any tax shall be entitled to recover, receive and retain for its own benefit all abatements and refunds of such
tax, unless it has previously been reimbursed by the other party. Neither party shall discontinue any abatement proceedings begun by it without first giving the other party written notice of its intent so to do and reasonable opportunity to be
substituted in such proceedings. Nothing contained in this Lease shall, however, require Tenant to pay any franchise, corporate, income, estate, inheritance, succession, capital levy or transfer tax of Landlord, or any income, profits or revenue tax
or charge upon the rent payable by Tenant under this Lease, unless and to the extent that said tax is in lieu of real estate taxes. 
 (b) Betterment Assessments. Tenant shall pay, directly to the authority charged with the collection thereof, each installment of any public, special or betterment assessment levied or assessed by
or becoming payable to any municipality or other governmental authority having jurisdiction of the Premises, for or in respect of the Premises for each installment period partially or wholly included in the Rent Period and, if exercised the
Extension Terms, all such payments to be made not less than five (5) days prior to the last date on which the same may be made without interest or penalty or fifteen (15) days after Tenant’s receipt of the assessments bill, whichever
is later. Landlord shall promptly furnish Tenant with copies of all bills for assessments levied or assessed after the Rent Commencement Date, and shall request 

  
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such municipality or governmental authority to send all bills for assessments directly to Tenant. With respect to any fraction of an installment period included in the Rent Period and the
Extension Terms, if exercised, at the beginning or end thereof, Tenant shall pay to Landlord, within fifteen (15) days after receipt of a reasonably detailed invoice therefor, the fraction of such installment allocable to such included period.
Tenant shall promptly furnish to Landlord reasonable evidence of such payment. Without postponing the foregoing payment, Tenant may prosecute appropriate proceedings to contest the validity or amount of any assessment with respect to which Tenant is
required to make payments as hereinbefore provided, such proceedings to be conducted jointly with any other parties, including Landlord, who have contributed to the payment of such assessments, and Tenant agrees to save Landlord harmless from all
costs and expenses incurred on account of Tenant’s participation in such proceedings. Landlord shall cooperate with Tenant with respect to such proceedings so far as reasonably necessary, at Tenant’s cost and expense. Landlord shall
promptly furnish to Tenant a copy of any notice of any public, special or betterment assessment received by Landlord concerning the Premises. Tenant shall be entitled to all abatements, if any, of any assessment paid by Tenant during the Rent Period
and, if exercised, the Extension Terms. 
 (c) Tax Fund Payments. If Tenant defaults in its obligations to
pay taxes or assessments under Subsections 3.2(a) or 3.2(b) and Landlord thereafter requires Tenant to make tax fund payments to Landlord, or if any holder of any mortgage on the Premises requires Landlord to make tax fund payments to it, then
Landlord shall so advise Tenant and thereafter Tenant shall, as Additional Rent, on the first day of each month of the applicable Term which is included in the Rent Period and, if exercised, the Extension Terms, make tax fund payments to Landlord.
“Tax fund payments” refer to such payments as Landlord or such mortgagee shall 

  
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reasonably determine to be sufficient to provide in the aggregate a fund adequate to pay all taxes and assessments referred to in subsection 3.2(a) and 3.2(b) of this Section 3.2 when they
become due and payable, and all such payments shall to the extent thereof relieve Tenant of its obligations under said subsections. If the aggregate of said tax fund payments is not adequate to pay all said taxes and assessments, Tenant shall pay to
Landlord the amount by which such aggregate is less than the amount equal to all said taxes and assessments, such payment to be made on or before the later of (a) fifteen (15) days after receipt by Tenant of written notice from Landlord of
such amount, or (b) five (5) days prior to the last day on which such taxes and assessments may be paid without interest or penalty. If Tenant shall have made the aforesaid payments, Landlord shall on or before the last day on which the
same may be paid without interest or penalty, pay or cause its mortgagee to pay to the proper authority charged with the collection thereof all taxes and assessments referred to in said subsections 3.2(a) and 3.2(b). All payments made by Tenant
pursuant to this subsection 3.2(c) shall to the extent thereof relieve Tenant of its obligations under said subsections 3.2(a) and 3.2(b). 
 (d) Insurance. 
 (i) Payment for Insurance. Tenant
shall pay for all insurance required under this subsection 3.2(d) except that, the Landlord will be solely responsible for the cost attributable to any liability insurance carried by Landlord under subsection 3.2(d)(ii)(b). Premiums for policy
periods for insurance carried by Landlord extending beyond the Term of this Lease shall be prorated. Payment shall be made by Tenant to Landlord within ten (10) business days following receipt of a written invoice from Landlord. 

(ii) Liability Insurance. 

  
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 (a) Carried by Tenant. Tenant shall obtain and keep in force a
Commercial General Liability policy of insurance protecting Tenant and Landlord as an additional insured against claims for bodily injury, personal injury and property damage based upon or arising out of the ownership, use, occupancy or maintenance
of the Premises and all areas appurtenant thereto. Such insurance shall be on an occurrence basis providing single limit coverage in an amount not less than $2,000,000 per occurrence with an annual aggregate of not less than $5,000,000. The policy
shall not contain any intra-insured exclusions as between insured persons or organizations, but shall include coverage for liability assumed under this Lease as an “insured contract” for the performance of Tenant’s indemnity
obligations under this Lease. The limits of said insurance shall not, however, limit the liability of Tenant nor relieve Tenant of any obligation hereunder. All insurance carried by Tenant shall be primary to and not contributory with any similar
insurance carried by Landlord, whose insurance shall be considered excess insurance only. 
 (b) Carried by
Landlord. Landlord shall have the right, but not the obligation, to maintain liability insurance, in addition to, and not in lieu of, the insurance required to be maintained by Tenant. Tenant shall not be named as an additional insured therein
and the cost of such insurance shall be borne by Landlord. 
 (iii) Property Insurance: Building and Rental
Value. 
 (a) Building. Landlord shall obtain and keep in force a policy or policies of property
insurance in the name of Landlord, with loss payable to Landlord and to any mortgagee insuring loss or damage to the Building. The amount of such insurance shall be equal to the full replacement cost of the Building, as the Building shall exist from
time to time, but in no event more than the commercially reasonable and available insurable value 

  
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thereof. Tenant’s trade fixtures and Tenant’s personal property shall be insured by Tenant under subsection 3.2(d)(iv) rather than by Landlord. If the coverage is available and
commercially appropriate, such policy or policies shall insure against all risks of direct physical loss or damage (except the perils of flood and/or earthquake, unless Tenant requests that such perils be included), including coverage for debris
removal and the enforcement of any applicable legal requirements requiring the upgrading, demolition, reconstruction or replacement of any portion of the Building, as the result of a covered loss. Said policy or policies shall also contain an agreed
valuation provision in lieu of any coinsurance clause, waiver of subrogation, and inflation guard protection causing an increase in the annual property insurance coverage amount by a factor of not less than the adjusted U.S. Department of Labor
Consumer Price Index for All Urban Consumers for the Boston-Brockton-Nashua-MA-NE-ME-CT area. The deductible amount shall not exceed $100,000 per occurrence, and Tenant shall be liable for such deductible amount in the event of an insured loss.

 (b) Rental Value. Landlord shall obtain and keep in force a policy or policies in the name of Landlord
with loss payable to Landlord and any mortgagee, insuring the loss of the Annual Rent for one year (“Rental Value Insurance”). Said insurance shall contain an agreed valuation provision in lieu of any coinsurance clause, and the amount of
coverage shall be adjusted annually to reflect the Annual Rent otherwise payable by Tenant for the next 12 month period following the adjustment. 
 (iv) Tenant’s Property. Tenant shall obtain and maintain insurance coverage on all of Tenant’s personal property and trade fixtures located on the Premises. Such insurance shall be full
replacement cost coverage with a deductible of not to exceed $100,000 per occurrence. The proceeds from any such insurance shall be used by Tenant for the replacement 

  
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of its personal property and trade fixtures unless this Lease is terminated because of a casualty or eminent domain taking, or the replacement would occur within the last six (6) months of
the Term and the Tenant elects not to replace such property. 
 (v) Insurance Policies. Insurance
required herein shall be issued by companies duly licensed or admitted to transact business in Massachusetts, and maintaining during the policy term a “General Policyholders Rating” of at least B+, VIII, as set forth in the most current
issue of “Best’s Insurance Guide”. Landlord and Tenant shall not do or permit to be done anything which invalidates the required insurance policies. Each party shall, prior to the Commencement Date, deliver to the other certified
copies of policies of such insurance or certificates evidencing the existence and amounts of the required insurance required to be maintained by such party. Tenant shall use commercially reasonable efforts to ensure that no such policy shall be
cancelable or subject to modification except after thirty (30) days’ prior written notice to Landlord, or, in the event the insurance company is unable or unwilling to provide such notice to Landlord, then except after thirty
(30) days’ prior written notice to Tenant, in which event Tenant shall promptly provide Landlord with written notice enclosing a copy of such notice from the insurance company. Each party shall, immediately following expiration of such
policies, furnish the other party with evidence of renewals or “insurance binders” evidencing renewal thereof. Such policies shall be for a term of at least one year, or the length of the remaining Term of this Lease, whichever is less. If
either party shall fail to procure and maintain the insurance required to be carried by it, the other party may, but shall not be required to, procure and maintain the same. Tenant shall be permitted to satisfy its insurance requirements hereunder
through blanket insurance policies. 

  
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 (vi) Waiver of Subrogation. Without affecting any other rights or
remedies, Tenant and Landlord each hereby release and relieve the other, and waive their entire right to recover damages against the other, for loss of or damage to its property arising out of or incident to the perils required to be insured against
herein under the policies of property insurance required by subsections 3.2(d)(iii) and 3.2(d)(iv). The effect of such releases and waivers is not limited by the amount of insurance carried or required, or by any deductibles applicable hereto. The
parties agree to have their respective property damage insurance carriers waive any right to subrogation that such companies may have against Landlord or Tenant, as the case may be, so long as the insurance is not invalidated thereby. If any such
coverage would be invalidated, then the Landlord or the Tenant, as the case may be, will inform the other party and that party will have the right, but not the obligation, to pay the additional cost that the insurer would charge for agreeing to a
waiver of subrogation. 
 (e) Utilities. Tenant shall pay directly to the proper authorities charged with
the collection thereof all charges for water, sewer, gas, electricity, telephone and other utilities or services used or consumed on the Premises. Tenant shall have the right to select its utility vendors for the Premises without the approval of
Landlord. 
 ARTICLE IV  
 Tenant’s Additional Covenants 
 4.1 Affirmative Covenants.
Tenant covenants as follows, at Tenant’s sole cost and expense, at all times during the Initial Term and, if exercised, the Extension Terms and such further time as Tenant occupies the Premises or any part thereof: 

(a) Perform Obligations. Tenant shall perform promptly all of the obligations of Tenant set forth in this Lease;
and shall pay when due the Annual Rent and Additional Rent and all charges, rates and other sums which by the terms of this Lease are to be paid by Tenant. 

  
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 (b) Use. Tenant shall use the Premises only for the Permitted Uses
and shall procure and keep in force all licenses and permits necessary therefor. Tenants shall have access to the Premises 24 hours per day, 365 (366 in the case of leap year) days per year. Tenant agrees not to introduce, generate or release upon
the Premises any Hazardous Material (as defined herein), in violation of applicable Environmental Laws or without obtaining all permits and approvals required by applicable Environmental Laws for the same, and shall indemnify and hold Landlord
harmless from all loss, costs, expenses, claims and liabilities, including, without limitation, reasonable attorneys’ fees and defense costs, remediation costs, and the expenses of investigations and negotiations with regulatory authorities, to
the extent arising from Tenant’s breach of the aforesaid obligation. The term “Hazardous Material” shall include without limitation: (i) substances included within the definitions of “hazardous substances”,
“hazardous materials”, “toxic substances,” “oil” or “solid waste” in the Comprehensive Environmental Response, Compensation, and Liability Act of 1980, as amended, 42 U.S.C. Section 9601 et seq., the
Resource Conservation and Recovery Act of 1976, 42 U.S.C. Section 6901 et seq., the Clean Air Act, 42 U.S.C. Section 7401 et seq., and the Hazardous Materials Transportation Act, 49 U.S.C. Sections 1801 et seq., and the Massachusetts Oil
and Hazardous Material Release Prevention and Response Act, M.G.L. Chapter 21E (“Chapter 21E”) (collectively, the “Environmental Laws”) and in the regulations promulgated pursuant to the Environmental Laws; (ii) substances
listed in the United States Department of Transportation Table (49 CFR 172.101 and amendments thereto) or by the Environmental Protection Agency (or successor agency) as 

  
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hazardous substances (40 CFR Part 302 and amendments thereto); (iii) other substances, materials and wastes which are or become regulated under applicable local, state or federal law or
order, or which are classified hazardous or toxic under any Environmental Law; and (iv) any material, waste or substance which is (A) petroleum, (B) friable asbestos, (C) polychlorinated biphenyls, (D) flammable explosives;
or (E) radioactive materials. 
 Tenant further agrees to the following conditions: 

(i) Tenant will not use, generate, manufacture, produce, store, release, discharge or dispose of, on, under or about the
Premises or transport to or from the Premises any Hazardous Material in violation of applicable Environmental Laws or allow its employees, agents, contractors, or business invitees to do so. 

(ii) Tenant shall give immediate written notice to Landlord of the following circumstances or events of which Tenant is
aware: 
 (a) Any action, proceeding or inquiry by any governmental authority with respect to the presence of
any Hazardous Material generated or stored by Tenant on the Premises, or the migration thereof from or to other property; 
 (b) All demands or claims made or threatened by any third party relating to any loss or injury resulting from any Hazardous Material generated, stored or released at or from the Premises; 

(c) Any spill, release, discharge or illegal disposal of any Hazardous Material that occurs at the Premises or results
from Tenant’s operations at the Premises, including, without limitation, those that would constitute a violation of Environmental Law; and 

  
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 (d) All matters of which Tenant is required to give notice pursuant to any
Environmental Law with respect to the Premises. 
 (iii) In the event any Hazardous Material is introduced,
generated or released to or on the Premises in violation of applicable Environmental Laws by Tenant, Tenant shall at its sole expense and within thirty (30) days after demand by Landlord (or such shorter period of time as may be required under
applicable laws or by any governmental entity having jurisdiction thereof) commence to perform and thereafter diligently prosecute to completion such remedial work as is reasonably necessary to restore the Premises, in all material respects, to the
condition existing prior to the introduction by Tenant of any Hazardous Material. All such remedial work shall be performed in conformance with this Lease and all applicable Environmental Laws. All remedial work shall be performed under the
supervision of a Licensed Site Professional approved in advance in writing by Landlord (which approval shall not be unreasonably withheld, conditioned or delayed) and otherwise in accordance with this Lease. All costs and expenses of such remedial
work shall be paid by Tenant including, without limitation, the charges of the Licensed Site Professional, and Landlord’s reasonable attorneys’ fees and costs incurred in connection with the monitoring or review of such remedial work. In
the event Tenant shall fail to timely commence, or cause to be commenced, or fail to diligently prosecute to completion such remedial work, Landlord may, but shall not be required to, after prior written notice to Tenant and Tenant’s failure to
perform within thirty (30) days of such notice (provided, however, that such notice shall not be required in the event of an emergency), cause such remedial work to be performed and all reasonable costs and expenses thereof, or incurred in
connection therewith, shall become immediately due and payable together with interest thereon at the rate of interest set forth relative to late payments of rent pursuant to this Lease. 

  
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 (iv) Without limitation in any respect of any other provision of this
Lease, Tenant will provide to Landlord, for Landlord’s information, a copy of any plan, program, report, proposal or other document from time to time filed or otherwise furnished by or on behalf of Tenant in connection with the Premises to any
governmental authority, agency or other instrumentality governing the environment, including without limitation any hazardous or toxic materials storage, disposition or contingency plans or any plans filed under so-called “Right to Know”
laws. 
 (v) Without limitation of any of the foregoing, Tenant shall indemnify and hold Landlord, its agents,
employees, contractors, invitees and lenders harmless, from all loss, costs, expenses, claims and liabilities, including, without limitation, reasonable attorney’s fees and defense costs, consultant’s fees, remediation costs, and expenses
of investigations and negotiations with regulatory authorities, arising out of or involving any Hazardous Material first introduced to the Premises on or after the Commencement Date by Tenant or any of its contractors, subtenants, licensees, vendors
or invitees. Tenant’s obligations shall include, but not be limited to, the effects of any contamination or injury to person, property or the environment, the cost of investigation, removal, remediation, restoration, and/or abatement.

 (vi) Notwithstanding anything contained herein to the contrary, Tenant shall not be held liable or
responsible for the presence or remediation of Hazardous Material existing on the Premises prior to Tenant’s entry therein. Tenant hereby acknowledges receipt of the environmental reports and other materials listed on Schedule 4.1(b)
(the “Environmental Reports”). Landlord represents and warrants to Tenant that (A) Landlord has delivered to Tenant 

  
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copies of all of the Environmental Reports and that Landlord is not aware of any other environmental reports, analyses or assessments in existence relating to the Premises, and (B) Landlord
has disclosed to Tenant the locations of all underground storage tanks now or formerly on the Premises (if any). Landlord shall indemnify and hold Tenant, its agents, employees, contractors, invitees and lenders harmless, from all loss, costs,
expenses, claims and liabilities, including, without limitation, reasonable attorney’s fees and defense costs, consultant’s fees, remediation costs, and expenses of investigations and negotiations with regulatory authorities, arising out
of or involving any Hazardous Material which existed on the Premises prior to the Commencement Date through the acts or omissions of the Landlord, anyone acting under the Landlord, or the Landlord’s predecessors in title, (whether or not
disclosed in the Environmental Reports) or which are caused by any act or omission of Landlord, its agents, contractors, employees or invitees after the Commencement Date. Landlord’s obligations shall include, but not be limited to, the effects
of any contamination or injury to person, property or the environment, the cost of investigation, removal, remediation, restoration, and/or abatement. 
 The representations, warranties, covenants and indemnities of Landlord and Tenant under paragraphs (v) and (vi) of this Section 4.1(b) shall survive expiration or termination of this Lease.

 (c) Repair and Maintenance. Tenant shall keep the Premises including, without limitation, the roof,
structure, exterior walls, the heating, ventilation and air conditioning system (the “HVAC System”) and all plumbing, electrical, mechanical and other fixtures and equipment therein in the same order, condition and repair as they are in on
the Commencement Date or may be put in during the Initial or Extension Terms, reasonable use, wear and tear, fire and other casualty and taking by eminent domain only excepted; and shall make all repairs,


  
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alterations, additions or replacements (each such addition or replacement a “Capital Improvement”) and do all other work necessary for the foregoing purposes. Notwithstanding the
foregoing, Landlord shall, at Landlord’s sole cost and expense, be responsible for any necessary replacement of the original Carrier Rooftop HVAC Units serving the Premises as of the A&R Effective Date (the “HVAC Units”), provided
that the need for such replacement is not caused by the act or omission of Tenant or any of its contractors, agents or invitees. If Tenant reasonably determines that the HVAC Units are in need of replacement, Tenant shall promptly notify Landlord of
same in writing (“Tenant’s HVAC Notice”), and Landlord shall inspect the HVAC Units as soon as is reasonably practicable, but in no event more than five (5) business days thereafter. If, following Landlord’s inspection of
the HVAC Units, Landlord disagrees with Tenant’s assessment that the HVAC Units are in need of replacement (as opposed to repair), then Landlord shall notify Tenant of such disagreement in writing within ten (10) business days after its
receipt of Tenant’s HVAC Notice (“Landlord’s HVAC Notice”). In such event, within five (5) business days after the delivery of Landlord’s HVAC Notice, each of Landlord and Tenant shall select its own reputable HVAC
contractor, consultant or expert having at least ten (10) years of experience installing, repairing and replacing HVAC equipment of a similar type, size and quality as the HVAC Units in the general vicinity of the Premises (each, an “HVAC
Contractor”) and shall notify the other party of the identity of its HVAC Contractor. If after joint inspection of the HVAC Units the Landlord’s and Tenant’s HVAC Contractors are unable to reach agreement with respect to whether the
HVAC Units are in need of replacement, the HVAC Contractors shall mutually select a third HVAC Contractor, who shall inspect the HVAC Units as soon as is reasonably practicable and make a final, binding determination as to whether or not replacement
is required. At Tenant’s election, any Capital Improvement (specifically not 

  
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including the replacement of any HVAC Unit, provided that the need for such replacement is not caused by the act or omission of Tenant or any of its contractors, agents or invitees) required to
be made by Tenant under this subsection or under subsection 4.1(d) below may be funded either by Tenant directly or, at the request of the Tenant and mutual agreement of the parties, by Landlord, provided that in the latter event, the Annual Rent
shall be increased by the annual pro rata share of the amount necessary to amortize the cost of such Capital Improvement over the useful life thereof, even if extending beyond the Term of this Lease, utilizing an annual interest rate equal to the
then prime rate of Bank of America (or its successor) plus two percent (2%). Snow and ice removal shall be the sole responsibility of Tenant. 
 (d) Compliance With Law. Tenant shall make all Capital Improvements and other changes required by any applicable law or ordinance or any order or regulation of any public authority by reason of
Tenant’s use of the Premises; and shall keep the Premises equipped with all safety appliances so required; and shall comply with the orders and regulations of all governmental authorities applicable to the conduct of Tenant’s business on
the Premises. Tenant shall have the right to contest, in good faith and by appropriate and timely legal proceedings, the legality or application of law, ordinance, order or regulation which this Lease obligates Tenant to comply with; provided
Landlord may require as a condition of such challenge that Tenant establish an escrow of the funds necessary to comply with the law or regulation if the challenge fails. 

(e) Payment for Tenant’s Work. Tenant shall pay promptly when due the entire cost of all work to the Premises
undertaken by Tenant and shall remove promptly after notice thereof all liens for labor and materials; shall procure all necessary permits before undertaking such work; shall do all of such work in a good and workmanlike manner, employing


  
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materials of good quality and complying with all governmental requirements; and shall save Landlord harmless and indemnified from all injury, loss, claims or damage to any person or property
occasioned by or growing out of such work. 
 (f) Indemnity. Tenant shall assume exclusive control of the
Premises, and all tort liabilities incident to the control or leasing thereof, and shall defend, indemnify and save Landlord harmless from all injury, loss, claim or damage to or of any person or property while on the Premises except to the extent
arising from the negligent acts or omissions of Landlord or its agents, contractors, employees, permitees, or invitees. 
 (g) Landlord’s Right to Enter. Landlord and Landlord’s Invitees (as defined below) shall be entitled to enter into and examine the Premises upon reasonable prior notice at reasonable
times during business hours and subject to Tenant’s reasonable security measures and manufacturing requirements; provided, however, that no notice shall be required in the event of an emergency. Tenant has informed Landlord that Tenant’s
research, manufacturing, and testing involve the use of clean rooms, sterile rooms, vacuum chambers, negative pressure laminar hooded laboratories, and areas in which precisely calibrated laser testing occurs, the current locations of which areas
(subject to change or modification as may be permitted by the terms of this Lease) are depicted on Exhibit E attached hereto (collectively, the “Operationally Sensitive Areas”). Tenant has further advised Landlord that access by Landlord
or Landlord’s Invitees to the Operationally Sensitive Areas could adversely impact or compromise the necessary operating conditions of such areas. Accordingly, access of the Landlord and Landlord’s Invitees to the Operationally Sensitive
Areas while manufacturing or testing is underway shall, at Tenant’s option, be restricted or limited as reasonably determined by Tenant to the extent necessary to avoid adverse impacts on Tenant’s business operations in such areas. In such
event, Tenant will 

  
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provide, on request, reasonably current photographs of the Operationally Sensitive Areas to which access cannot be given. Tenant shall have the right to have a representative of Tenant present at
each such entry and examination of the Premises by the Landlord during the Term. The Landlord shall carry its own liability insurance covering the Landlord and the Landlord’s Invitees on the Premises during such periods of access. During the
last fifteen (15) months of the Lease Term, Landlord’s access rights hereunder shall include the right to access the Premises from time to time during the Term of the Lease for marketing purposes, including (i) allowing prospective
tenants, investors, buyers, lenders and Landlord’s agents and invitees (collectively, “Landlord’s Invitees”) to perform due diligence activities on the Premises, and (ii) posting signs on the Land and/or the Building
advertising the availability of space in the Premises, in each case (1) at Landlord’s sole cost and expense; (2) at reasonable frequency; and (3) subject in all respects to the terms and conditions set forth in this section. Any
entry into the Premises by Landlord or Landlord’s Invitees may not include invasive testing within the Premises, and Landlord shall use reasonable efforts during such periods of access to minimize interference with Tenant’s business
operations. Notwithstanding anything contained in this Lease to the contrary, Landlord hereby agrees to indemnify and hold harmless Tenant from and against all claims, costs, damages, demands, actions, liabilities, expenses and causes of action
(including, without limitation, reasonable attorney’s fees) arising out of or resulting from personal injury, or property damage incurred by Tenant and caused by Landlord or Landlord’s Invitees during such periods of access. Landlord will
provide Tenant with reasonable advance notice prior to each visit by Landlord’s Invitees. 
 (h) Personal
Property at Tenant’s Risk. Except as otherwise provided herein, all of the furnishings, fixtures, equipment, effects and property of every kind, nature and 

  
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description of Tenant and of all persons claiming by, through or under Tenant which, during the continuance of this Lease or any occupancy of the Premises by Tenant or anyone claiming under
Tenant, may be on the Premises, shall be at the sole risk and hazard of Tenant, and if the whole or any part thereof shall be destroyed or damaged by fire, water or otherwise, or by the leakage or bursting of water pipes, by theft or from any other
cause, no part of said loss or damage is to be charged to or to be borne by Landlord. 
 (i) Yield Up. At
the expiration of the Initial Term or Extension Terms, if exercised, or earlier termination of this Lease, Tenant shall surrender all keys to the Premises, remove all of its trade fixtures and personal property in the Premises, repair all damage
caused by such removal and yield up the Premises, broom-clean and in the same order and repair in which Tenant is obliged to keep and maintain the Premises by the provisions of this Lease, reasonable wear and tear, fire, casualty and eminent domain
taking excepted. Any property not so removed shall be deemed abandoned and may be removed and disposed of by Landlord in such manner as Landlord shall determine and Tenant shall pay Landlord the reasonable cost and expense incurred by it in
effecting such removal and disposition and in making any incidental repairs and replacements to the Premises. 

If Tenant holds over after expiration of the Initial Term or if exercised any Extension Term, without the Landlord’s
consent, Tenant shall pay during such holdover period a sum equal to one hundred fifty percent (150%) of the Annual Rent in effect immediately prior to the holdover, prorated on a daily basis for each day Tenant continues to occupy some or all
of the Premises after the expiration of the Term hereof. In addition, Tenant shall further indemnify Landlord against all loss, cost and damage, direct and indirect, resulting from Tenant’s failure and delay in surrendering the Premises as
above provided. 

  
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 4.2 Negative Covenants. Tenant covenants as follows, at Tenant’s
sole cost and expense, at all times during the Initial Term or Extension Terms, if exercised, and such further time as Tenant occupies the Premises or any part thereof: 

(a) Assignment. Subletting, etc. Tenant shall not assign, transfer, mortgage or pledge this Lease or sublease
(which term shall be deemed to include the granting of concessions and licenses and the like) all or any part of the Premises or suffer or permit this Lease or the leasehold estate hereby created under this Lease or any other rights arising under
this Lease to be assigned, transferred or encumbered, in whole or in part, or permit the occupancy of the Premises by anyone other than Tenant, without obtaining, in each instance, the written consent of Landlord, which consent shall not be
unreasonably withheld or delayed. When requesting consent to an assignment, sublease or other transfer, Tenant shall provide Landlord with financial statements for the proposed transferee, a fully executed copy of the proposed assignment, sublease
or other transfer documentation and such other information as Landlord may reasonably request. Within fifteen (15) days after receipt of the required information and documentation, Landlord shall either: (i) consent to the transfer by
execution of a consent agreement in a form reasonably designated by Landlord; (ii) reasonably refuse to consent to the transfer in writing; or (iii) if the proposed transfer is an assignment of Tenant’s interest in the Lease or a
sublease of all or substantially all of the Premises for the balance of the Term, terminate this Lease as of a date selected by Landlord (which shall be no sooner than 30 nor later than 180 days after the date of Landlord’s election to
terminate). With respect to subleases, it shall be deemed reasonable for Landlord to condition its consent on a secured commitment by Tenant to remove all demising and other sublease-related work prior to expiration of the Term. Tenant shall pay
Landlord a review fee of $500 for Landlord’s review of any requested transfer and shall also reimburse Landlord’s reasonable legal and engineering costs incurred in reviewing such requested transfer, not to exceed, however, a total of
$5,000. 

  
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 Tenant shall pay Landlord fifty percent (50%) of the “Net
Profit,” as defined in the following sentence, on the rent and other consideration which Tenant receives as a result of a transfer other than a “Permitted Transfer,” as defined below, that is in excess of the Annual Rent and
Additional Rent payable to Landlord for the portion of the Premises and Term covered by such transfer. The Net Profit for purposes of this section is the gross excess of the cash consideration received from the subtenant or assignee (together
“the Sub”) less the Tenant’s costs in altering the Sub’s space in connection with the Sub’s use, attorneys fees, brokerage commissions, advertising expenses, cash and expense allowances, and free rent pertaining to the
sublease. Tenant shall pay Landlord for Landlord’s share of the Net Profit within thirty (30) days after Tenant’s receipt of the excess. If Tenant is in default beyond any applicable notice or grace period, Landlord may require that
all sublease payments be made directly to Landlord, in which case Tenant shall receive a credit against rent in the full amount received by Landlord. 
 No assignment or subletting and no consent of Landlord thereto shall affect the continuing primary liability of Tenant (which, following assignment, shall be joint and several with the assignee); no
consent to any of the foregoing in a specific instance shall operate as a waiver in any subsequent instance; and no assignment shall be binding upon Landlord or any of Landlord’s mortgagees, unless Tenant shall deliver to Landlord an instrument
which contains a covenant of assumption by the assignee running to Landlord and all persons claiming by, through or under Landlord, but the failure or refusal of the assignee to execute such instrument of assumption shall not release or discharge
assignee from its liability as Tenant hereunder nor shall execution of such instrument of assumption affect the continuing primary liability of Tenant. 

  
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 Notwithstanding the prohibition on transfer to the contrary, Tenant may
assign this Lease or sublet all or any portion of any of the Premises to (i) any corporation, partnership, limited liability company, trust, association or other business organization directly or indirectly controlling or controlled by or in
common control with Tenant, or (ii) to any successor to Tenant by merger, consolidation or conversion, or (iii) any corporation, partnership, limited liability company, trust, association or other business organization that acquires a
controlling interest in Tenant or any subsidiary or operating division of Tenant whose business is being conducted at the Premises (“Operating Subsidiary”) or acquires substantially all of the assets of Tenant or the Operating Subsidiary
as a going concern of the business that is being conducted at the Premises (each of the foregoing being referred to as a “Permitted Transfer”), and in all of the foregoing circumstances both the original Tenant and the successor Tenant
shall remain jointly and primarily liable for the obligations of Tenant under this Lease. Tenant shall provide notice of a Permitted Transfer at least fifteen (15) days prior to the effective date of the transaction, which notice shall contain
a description of the transaction. In addition, Tenant shall be permitted to allow the employees of Tenant’s affiliates to occupy from time to time portions of the Premises on a shared basis with Tenant. 

(b) Overloading, Nuisance, etc. Tenant shall not injure, overload, deface or otherwise harm the Building; nor
commit any nuisance; nor make, allow or suffer any waste; nor make any use of the Premises which is improper, offensive or in violation of any law or ordinance or which will invalidate any insurance. 

  
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 (c) Buildings, Installations, Alterations or Additions. Tenant shall
not construct any new buildings on the Land, or make any installations, alterations or additions in, to or on the Building which affect the structure thereof or building systems therein or cost in excess of $500,000 in the aggregate in any twelve
(12) month period without on each occasion obtaining the prior written consent of Landlord, which consent shall not be unreasonably withheld or delayed. Tenant shall be permitted to install its own security system pursuant to plans reasonably
approved by Landlord. All new buildings and installations, alterations or additions to existing buildings (each an “Improvement”) shall, at the expiration or termination of this Lease, become the property of Landlord and shall be
surrendered by Tenant with the Premises unless the Landlord and the Tenant agree, at the time when the parties discuss the Tenant’s proposed installation, alternation or addition, that the Tenant will remove such Improvement at the end of the
Term. Landlord agrees that Tenant shall have no obligation to remove the Tenant Improvements to be installed pursuant to the Work Letter. 
 ARTICLE V 
 Casualty or Taking 

5.1 Termination. In the event that the entire Premises, or a substantial portion thereof, shall be taken by any
public authority or for any public use or shall be destroyed or damaged by fire or other casualty or by the action of any public authority and such damage cannot reasonably be repaired in all material respects within 180 days of such damage or
destruction, or if any material portion of the Building or access to the Premises or more than ten percent (10%) of the parking spaces on the Premises shall be taken by any public authority or for any public use, or by the action of any public
authority (each such damage, destruction or taking being hereinafter referred to as a “Casualty”), then in any of such events this Lease may be terminated at the election of either Landlord or Tenant by giving written notice to the other
within sixty (60) days after the occurrence of such Casualty. 

  
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 5.2 Restoration. If said election to terminate is not exercised by
either party within said sixty (60) day period or if there is no right to terminate, Landlord shall fully restore the Premises (exclusive of Tenant’s personal property and trade fixtures) to a proper condition for use, with reasonable
promptness and diligence, but only to the extent insurance proceeds are available therefor (or would have been available therefor if Landlord had carried the insurance required under Section 3.2(d)(iii)) and subject to zoning and building laws
then in existence; and from and after the occurrence of such Casualty and continuing during such restoration period, an equitable abatement of rent shall be made for the portion of the Premises not fit for use and occupation. If Landlord fails to
complete restoration of the Premises (exclusive of Tenant’s personal property and trade fixtures) within a period equal to 150% of the time estimated for restoration by Landlord at the time of commencement of the restoration work, and as a
result the Premises are not fit for use and occupancy for Tenant’s Permitted Uses, Tenant may terminate the Lease by written notice given to Landlord while such failure to complete restoration persists, in which event this Lease shall terminate
as of the date that is thirty (30) days after the date of delivery of such termination notice; provided, however, that if Landlord completes restoration within thirty (30) days after delivery of such termination notice, the termination
notice shall be deemed void and of no force or effect. Notwithstanding the foregoing, if a Casualty shall occur during the last year of either the Initial Term or the first Extension Term, Landlord shall not be obligated to restore the Premises
unless the Tenant agrees in writing to exercise its options to extend the Term of the Lease for the first Extension Term or the Second Extension Term, as applicable. If Landlord failed to carry the insurance or coverage required under Section
3.2(d)(iii), Landlord shall contribute funds toward restoration so that the proceeds available equal those that would have been available had the required insurance or coverage been carried. 

  
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 5.3 Insurance Proceeds and Condemnation Awards. If this Lease
terminates as a result of a Casualty, Landlord shall be entitled to all of the insurance proceeds payable pursuant to the policy of property insurance required to be maintained under Subsection 3.2(d)(iii). Condemnation awards shall be the property
of Landlord, whether such award shall be made as compensation for diminution in value of the leasehold, the value of the part taken, or for severance damages; provided, however, that Tenant shall be entitled to proceeds attributable to the
unamortized value of any Improvements and Tenant Improvements (calculated on a straight-line basis from the date of installation to the end of the Term), and to any compensation paid by the condemnor for Tenant’s relocation expenses, loss of
business goodwill and/or trade fixtures. If this Lease is not terminated by reason of a condemnation, Tenant shall make all proceeds or compensation attributable to the unamortized value of any Improvements and Tenant Improvements available to
Landlord for application by Landlord to the restoration of the Premises. 
 ARTICLE VI 

Defaults 

6.1 Events of Default. 
 (a) If Tenant shall default in the performance of any of its obligations to pay the Annual Rent or Additional Rent hereunder and such default shall continue for five (5) days after receipt of notice
from Landlord that such payment is due (except that no notice shall be required for the second or any subsequent rent default within any twelve-month period) or if Tenant shall default in the performance of any of its other obligations hereunder and
such default 

  
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shall continue for thirty (30) days after written notice from Landlord to Tenant specifying any other default or defaults, or (b) if any assignment shall be made by Tenant or any
guarantor of Tenant for the benefit of creditors, or (c) if Tenant’s leasehold interest shall be taken on execution, or (d) if a petition is filed by Tenant for adjudication as bankrupt, or for reorganization or an arrangement under
any provision of the Bankruptcy Act as then in force and effect, or (e) if an involuntary petition under any of the provisions of said Bankruptcy Act is filed against Tenant and such involuntary petition is not dismissed within ninety
(90) days thereafter, then, and in any of such cases, Landlord and the agents and servants of Landlord lawfully may, in addition to and not in derogation of any remedies for any preceding breach of covenant, immediately or at any time
thereafter with process of law enter into and upon the Premises or any part thereof in the name of the whole or mail a notice of termination addressed to Tenant at the Premises, and repossess the same as of Landlord’s former estate and expel
Tenant and those claiming through or under Tenant and remove its and their effects without being deemed guilty of any manner of trespass and without prejudice to any remedies which might otherwise be used for arrears of rent or prior breach of
covenant, and upon such entry or mailing as aforesaid this Lease shall terminate, Tenant hereby waiving all rights of redemption, if any, to the extent such rights may be lawfully waived and Landlord, without notice to Tenant, may store
Tenant’s effects, and those of any person claiming through or under Tenant at the expense and risk of Tenant. 
 In the event Tenant fails to make any rental or other payment when due hereunder, Tenant shall pay interest on such overdue amount to Landlord at the rate per annum equal to the then prime rate of Bank of
America (or its successor) plus four percent (4%) from the date due; and if Tenant fails to make such payment within five (5) business days after notice that the same is due, Tenant shall in addition pay to Landlord immediately a late
charge equal to five percent (5%) of the overdue amount. 

  
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 6.2 Remedies. 

(a) In the event of any termination, Tenant shall pay the Annual Rent, Additional Rent and other sums payable hereunder up
to the time of such termination, and thereafter Tenant, until the end of what would have been the Lease Term in the absence of such termination, and whether or not the Premises shall have been relet, shall be liable to Landlord for, and shall pay to
Landlord, as liquidated current damages, the Annual Rent, Additional Rent and other sums that would be payable hereunder if such termination had not occurred, less the net proceeds, if any, of any reletting or sale of the Premises, after deducting
all expenses in connection with such reletting or sale, including, without limitation but only to the extent that they are reasonably required in connection with such reletting or sale, all repossession costs, brokerage commissions, legal expenses,
attorneys’ fees, advertising, expenses of employees, alteration costs and expenses of preparation (including tenant allowances and other inducements) for such reletting or sale. Tenant shall pay such current damages to Landlord monthly on the
days which the Annual Rent would have been payable hereunder if this Lease had not been terminated. Landlord shall have no obligation to mitigate its damages from Tenant’s default hereunder but shall actively market the Premises for lease or
sale following termination of this Lease. 
 (b) At any time after such termination, whether or not Landlord
shall have collected any such current damages, as liquidated final damages and in lieu of all such current damages beyond the date of such demand, at Landlord’s election Tenant shall pay to Landlord an amount equal to the excess, if any, of the
Annual Rent, Additional Rent and other sums as 

  
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hereinbefore provided which would be payable hereunder from the date of such demand (assuming that, for the purposes of this paragraph, the annual Additional Rent would be the same as the
Additional Rent for the immediately preceding year for what would be the then unexpired Lease Term if the same remained in effect), over the then fair net rental value of the Premises for the same period, such difference being discounted to a
present value utilizing a commercially-reasonable discount rate. 
 (c) Tenant hereby expressly waives any and
all rights of redemption granted by or under any present or future laws in the event of Tenant’s being evicted or dispossessed, or in the event of Landlord’s obtaining possession of the Premises, by reason of the violation by Tenant of any
of the covenants and conditions of this Lease. Nothing contained in this Lease shall, however, limit or prejudice the right of Landlord to prove for and obtain in proceedings for bankruptcy or insolvency by reason of the termination of this Lease,
an amount equal to the maximum allowed by any statute or rule of law in effect at the time when, and governing the proceedings in which, the damages are to be proved, whether or not the amount be greater, equal to, or less than the amount of the
loss or damages referred to above. 
 6.3 Remedies Cumulative. Any and all rights and remedies which
Landlord may have under this Lease, and at law and equity, shall be cumulative and shall not be deemed inconsistent with each other, and any two or more of all such rights and remedies may be exercised at the same time insofar as permitted by law.

 6.4 Effect of Waivers of Default. Any consent or permission by Landlord to any act or omission by
Tenant which otherwise would be a breach of any covenant or condition herein, or any waiver by Landlord of the breach of any covenant or condition herein, shall not in any way be held or construed (unless expressly so declared) to operate so as to
impair the continuing obligation of any covenant or condition herein, or otherwise, except as to the specific instance, operate to permit similar acts or omissions. 

  
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 6.5 No Waiver, etc. The failure of Landlord to seek redress
for violation of, or to insist upon the strict performance of, any covenant or condition of this Lease shall not be deemed a waiver of such violation nor prevent a subsequent act, which would have originally constituted a violation, from having all
the force and effect of an original violation. The receipt by Landlord of rent with knowledge of the breach of any covenant of this Lease shall not be deemed to have been waiver of such breach. No consent or waiver by Landlord, express or implied,
to or of any breach of any agreement or duty of Tenant shall be construed as a waiver or consent to or of any other breach of the same or any other agreement or duty. 

6.6 No Accord and Satisfaction. No acceptance by Landlord of a lesser sum than the Annual Rent, Additional Rent or
any other charge then due shall be deemed to be other than on account of the earliest installment of such rent or charge due, nor shall any endorsement or statement on any check or any letter accompanying any check or payment as rent or other charge
be deemed an accord and satisfaction, and Landlord may accept such check or payment without prejudice to Landlord’s right to recover the balance of such installment or pursue any other remedy in this Lease provided. 

6.7 Landlord’s Self Help Remedy. In the event Tenant fails to perform its obligations hereunder and such
failure continues for thirty (30) days after receipt of written notice from Landlord to Tenant (or such shorter period as may be practicable, in the event of emergency), and such failure shall continue for an additional period of fifteen
(15) days after a second notice from Landlord to Tenant stating in capital letters Landlord’s intent to exercise self-help remedies under this Section 6.7 (though such second notice and fifteen-day cure period shall not be


  
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required in the event of emergency), then Landlord may perform such obligations itself and charge Tenant for all reasonable costs and expenses incurred in connection therewith, which Tenant shall
pay as Additional Rent within thirty (30) days after receipt of an invoice thereof from Landlord, along with reasonable substantiating documentation. 
 6.8 Default by Landlord. If Landlord shall fail to perform any covenant required to be performed by Landlord under the terms of this Lease and such failure shall continue for a period of thirty
(30) days after receipt by Landlord of written notice thereof from Tenant, or if Landlord shall fail to pay any sums unequivocally due to Tenant hereunder, and such failure shall continue for a period of thirty (30) days after receipt by
Landlord of written notice thereof from Tenant, and such failure shall continue for an additional period of fifteen (15) days after a second notice from Tenant to Landlord stating in capital letters Tenant’s intent to exercise self-help
remedies under this Section 6.8, then Tenant may, in addition to any of Tenant’s other rights set forth elsewhere in this Lease, (A) cure the default of Landlord hereunder, and perform the covenants which Landlord has failed to
perform, and all reasonable sums expended by Tenant in curing such default and performing such covenants shall be paid by Landlord to Tenant within thirty (30) days after demand therefor accompanied by reasonable supporting documentation
detailing the costs incurred. If not timely paid, such sums shall bear interest at a rate per annum equal to the then prime rate of Bank of America (or its successor) plus four percent (4%) from the date due, and may be offset by Tenant against
future rentals, provided the offset shall be limited to no more than twenty-five percent (25%) of the monthly Annual Rent in any calendar month; and/or (B) bring suit to recover from Landlord all sums due Tenant from Landlord together with
interest at a rate per annum equal to the then prime rate of Bank of America (or its successor) plus four percent (4%). 

  
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 ARTICLE VII 
 Mortgagee’s Rights 
 7.1 Superiority of Lease.
Except as provided in Subsection 7.2 below, this Lease shall be superior to and shall not be subordinated to any future mortgage, lien or other encumbrance on the Premises. The holder of any such future mortgage shall not be liable either as
mortgagee or as assignee, to perform, or be liable in damages for failure to perform, any of the obligations of Landlord unless and until such holder shall enter and take possession of the Premises for the purpose of foreclosure. Provided Landlord
notifies Tenant in writing of the name and contact information of its mortgagee(s), Tenant agrees to provide such holder of a mortgage with copies of any default notice delivered to Landlord at the same time Tenant delivers any such notice to
Landlord. 
 7.2 Subordination. Landlord shall have the option to subordinate this Lease to any mortgage
of the Premises provided that the holder thereof enters a commercially reasonable subordination, non-disturbance and attornment agreement with Tenant pursuant to which the holder agrees to recognize this Lease and the rights of Tenant hereunder
(including, without limitation, the provisions of this Lease regarding Casualty), and to accept Tenant as tenant of the Premises under the terms and conditions of this Lease in the event of acquisition of title by such holder or its successor or
assigns through foreclosure proceedings or otherwise, and Tenant agrees to recognize and attorn to the holder of such mortgage as Landlord in such event, which agreement shall be made to expressly bind and inure to the benefit of the successors and
assigns of Tenant and of the holder and upon anyone purchasing said Premises at any foreclosure sale. Tenant agrees to execute and deliver any appropriate instruments necessary to carry out the agreements contained in this Section 7.2.


  
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 ARTICLE VIII 
 Miscellaneous Provisions 
 8.1 Condition of
Premises. Tenant acknowledges that it has been in occupancy of the Premises and has accepted possession thereof as of the Commencement Date, and that Landlord timely and completely satisfied all of Landlord’s obligations under the Original
Lease with respect to delivery of the Premises. Except to the extent expressly provided herein to the contrary, Tenant hereby accepts the Premises in “AS-IS, WHERE-IS AND WITH ALL FAULTS” condition, Landlord expressly making no
representation or warranty about the physical condition or legal compliance of the Premises whatsoever except to the extent expressly stated in this Lease. 
 8.2 Notices from One Party to the Other. All notices required or permitted hereunder shall be in writing and shall be deemed effective upon receipt (or refusal, if delivery is refused) when
delivered by hand, nationally recognized overnight courier, or registered or certified mail postage prepaid and addressed, if to Tenant, at the Premises and thereafter at the Premises or such other address as Tenant shall have last designated by
notice in writing to Landlord, with a copy to John A. Shetterly, Esq., at 127 Magazine Street, Cambridge, MA 02139, and, if to Landlord at the Original Address of Landlord or such other address as Landlord shall have last designated by notice in
writing to Tenant; with a copy to Wilmer Cutler Pickering Hale and Dorr LLC, 60 State Street, Boston, MA 02109, Attention: Paul Jakubowski, Esq. 
 8.3 Quiet Enjoyment. Landlord agrees that upon Tenant’s paying the rent and performing and observing the agreements, conditions and other provisions on its part to be performed and observed,
Tenant shall and may peaceably and quietly have, hold and enjoy the Premises during the Lease Term without any manner of hindrance or molestation from Landlord or anyone claiming under Landlord, subject, however, to the terms of this Lease.


  
 - 37 -









 8.4 Lease not to be Recorded. Landlord and Tenant agree that neither
party shall record this Lease. Both parties shall, upon the request of either, execute and deliver a notice or short form of this Lease in such form, if any, as may be permitted by applicable statute and shall execute and deliver such further notice
as may be required in connection with Tenant’s exercise of any option to extend contained in this Lease. 

8.5 Limitation of Landlord’s Liability. No owner of the Premises shall be liable under this Lease except for
breaches of Landlord’s obligations occurring while owner of the Premises. In consideration of the benefits accruing hereunder, Tenant hereby agrees that, in an event of any actual or alleged failure, breach or default hereunder by Landlord:
(1) the obligations of Landlord under this Lease do not constitute personal obligations of the individual members, partners, managers, directors, officers or shareholders of Landlord or any direct or indirect member, partner, or shareholder of
Landlord, and Tenant shall not seek recourse against any such members, partners, directors, managers, officers or shareholders or any of their personal assets for satisfaction of any liability with respect to this Lease; (2) unless Tenant seeks
injunctive relief, the sole and exclusive remedy of Tenant shall be to obtain a monetary judgment against Landlord and thereafter to proceed against Landlord’s assets; (3) no member of Landlord shall be sued, named as a party in any suit
or action, or except as required to serve the Landlord, served with process therein, and no member of Landlord shall be required to respond to any service of process; (4) no judgment will be taken against any member of Landlord, and no writ of
execution will be levied against the assets of any such member; and (5) these covenants and agreements are enforceable both by Landlord and also by any member of Landlord, and shall bind Tenant and its successors and assigns. 

  
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 8.6 Acts of God. In any case where Landlord or Tenant is required to
do any act, other than the payment of money, delays caused by or resulting from Acts of God, war, civil commotion, fire, flood or other casualty, strikes, inability to obtain labor, materials or equipment, government regulations, unusually cold or
severe weather, or other causes beyond Landlord’s or Tenant’s reasonable control shall not be counted in determining the time during which work shall be completed, whether such time be designated by a fixed date, a fixed time or “a
reasonable time”, and such time shall be deemed to be extended by the period of such delay. Inability to pay amounts due hereunder shall not be deemed to be beyond Landlord’s or Tenant’s control. 

8.7 Brokerage. Landlord and Tenant each warrants and represents to the other that it has not dealt with any broker
in connection with the consummation of this Lease, and each agrees to indemnify, defend and hold the other harmless from and against any loss, and all loss, cost, damage, claim or expense arising out of the breach of the foregoing representation and
warranty. 
 8.8 Applicable Law and Construction. This Lease shall be governed by and construed in
accordance with the laws of the Commonwealth of Massachusetts, and if any provisions of this Lease shall to any extent be invalid, the remainder of this Lease shall not be affected thereby. There are no oral or written agreements between Landlord
and Tenant affecting this Lease. This Lease may be amended, and the provisions hereof may be modified, only by instruments in writing executed by Landlord and Tenant. The titles of the several Articles and Sections contained herein are for
convenience only and shall not be considered in construing this Lease. Unless repugnant to this context, the words “Landlord” and “Tenant” 

  
 - 39 -









 
appearing in this Lease shall be construed to mean those named above and their respective heirs, executors, administrators, successors and assigns, and those claiming through or under them,
respectively. 
 8.9 Estoppel Certificate. Both parties agree from time to time, upon not less than
fifteen (15) days’ prior written request by the other party, to execute, acknowledge and deliver to the other party a statement in writing certifying that this Lease is unmodified and in full force and effect and that Tenant has no
defense, offsets or counterclaims against its obligations to pay the Annual Rent and Additional Rent and to perform its other covenants under this Lease and that there are no uncured defaults of Landlord or Tenant under this Lease (or, if there have
been any modifications that the same is in full force and effect as modified and stating the modifications and, if there are any defenses, offsets, counterclaims or defaults, setting them forth in reasonable detail), and the dates to which the
Annual Rent, Additional Rent and other charges have been paid. Any such statement delivered pursuant to this Section 8.9 may be relied upon by any prospective purchaser or mortgagee of the Premises, or any prospective assignee or sublessee of
the Premises. 
 8.10 Signage. Tenant, at Tenant’s sole cost and expense, and in accordance with all
applicable laws, shall have the right to install signs displaying Tenant’s name and advertising its business on the Land and the exterior of the Building. Landlord shall cooperate with Tenant at Tenant’s sole cost and expense to obtain
regulatory approvals for Tenant’s signage. Tenant shall maintain and operate its signs at its own expense during the Term, and all of Landlord’s self-help rights under Section 6.7 shall apply as well to Tenant’s obligations under
this Section. Tenant shall remove its signage at the expiration of the Term, repairing all damage caused by such removal and leaving the Building and its façade in the condition the same were in prior to erection of the signs, reasonable wear
and tear, fire, casualty and eminent domain taking excepted. 

  
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 8.11 Warranty of Title by Landlord. Landlord hereby warrants,
represents and covenants to Tenant that: (A) Landlord is the sole owner in fee simple absolute of the Premises; (B) Landlord has good and marketable fee simple title to the Premises free and clear of all liens and encumbrances except taxes
not yet due and payable and other exceptions to title listed on Exhibit C attached hereto; and (C) Landlord will indemnify Tenant against any damage and expense which Tenant may suffer by reason of the failure to have had recorded a
Certificate of Compliance with respect to the Order of Conditions recorded as Document 1046737. Landlord has full right and power to execute this Lease and to lease the Premises for the Term provided in this Lease. 

8.12 Parking. Tenant shall have the right during the Lease Term to use the parking area at the Premises, as shown
on the plan attached hereto as Exhibit D (the “Parking Plan”). If Tenant reasonably determines and notifies Landlord in writing that it requires additional parking during the Lease Term, Landlord shall use all diligent efforts to
obtain as soon as is reasonably practicable thereafter all land use and other approvals, if any, required in order to enable Landlord to construct on the Premises those certain additional parking spaces identified as “Proposed Future
Spaces” on the Parking Plan, to the extent not already existing as of the A&R Effective Date (the “Additional Spaces”) and, provided Landlord successfully obtains such land use and other approvals, Landlord shall use all diligent
efforts to construct such Additional Spaces in accordance with the Parking Plan, provided that if Landlord reasonably determines that such Additional Spaces are not reasonably capable of being constructed in the locations shown on the Parking Plan,
then Landlord shall use all diligent efforts to obtain such land use and other 

  
 - 41 -









 
approvals required to allow Landlord to cause the existing parking area at the Premises or a portion thereof to be expanded, reconfigured and/or restriped in order to accommodate an equivalent
number of additional parking spaces to the Additional Spaces (such work being referred to hereinafter as “Landlord’s Work”). 
 Landlord shall pay promptly when due the entire cost of Landlord’s Work and shall remove promptly after notice thereof all liens for labor and materials; shall procure all necessary permits before
undertaking such work; shall perform Landlord’s Work in a good and workmanlike manner, employing materials of good quality and complying with all governmental and legal requirements, including, without limitation, the Town of Bedford Zoning
Bylaws and the Americans with Disabilities Act; and shall save Tenant harmless and indemnified from all injury, loss, claims or damage to any person or property occasioned by or growing out of Landlord’s Work and occurring during the
performance of Landlord’s Work. 
 8.13 Counterparts. This Lease may be executed in one or more
counterparts, each of which shall be deemed an original, but all of which shall constitute one and the same instrument. 

[Remainder of page intentionally blank. Signatures follow.] 

  
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 EXECUTED under seal as of the date first above written. 

 

					
	LANDLORD:
	
	125 MIDDLESEX TURNPIKE, LLC
		
	By:	 	Mohawk Partners II, LLC
			
		 	By:	 	  

		 		 	Name:
		 		 	Title:


  

			
	TENANT:
	
	GSI GROUP CORPORATION
		
	By:	 	  

		 	Name:
		 	Title:



  
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 JOINDER 
 The undersigned, GSI Group, Inc., being the Guarantor of Tenant’s obligations under the Lease pursuant to that certain Guarantee Agreement made as of November 2, 2007 (the
“Guaranty”), hereby joins in the execution of this Amended and Restated Lease (the “Amended and Restated Lease”) to acknowledge its consent to the terms of the Amended and Restated Lease, confirm that the
obligations of Tenant pursuant to the Amended and Restated Lease are included among the obligations guaranteed by the undersigned pursuant to the Guaranty, and confirm and ratify the undersigned’s continuing obligations and liability under the
Guaranty. 
 IN WITNESS WHEREOF, the undersigned has executed this Joinder as of the day and year first above written.

  

			
	GUARANTOR:
	
	GSI GROUP, INC.
		
	By:	 	  



 

			
	Name:	 	  



 

			
	Title:	 	  




  
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 Exhibit A 
 Legal Description 
 A certain parcel of land situated in Bedford in the
County of Middlesex shown as Lot 3 on a plan drawn by Raymond Engineering Service, Surveyors, dated October 2, 1975, filed in the Land Registration Office, a copy of a portion of which is filed with Middlesex County South Registry District of
the Land Court in Book 761, Page 86 with Certificate of Title Number 126236 (Plan No. 34723B). 
 For grantor’s title,
see Certificate Numbered 207272 filed in Book 1166, Page 122. 

  
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 Exhibit B 
 Work Letter for Tenant Improvements 
 The purpose of this Work Letter (this “Work
Letter”), together with relevant provisions in the Lease, is to address various issues relating to the construction of the Tenant Improvements and relating to the disbursement of the Tenant Improvements Allowance. All defined terms used in this
Work Letter, as indicated by the initial capitalization thereof, shall, unless otherwise expressly defined in this Work Letter, have the same meaning as is ascribed to such terms in the Lease and the other exhibits attached to the Lease. The
provisions of the Lease and the other exhibits attached to the Lease, except where expressly inconsistent with the terms and provisions in this Work Letter, shall be incorporated into this Work Letter, and this Work Letter shall be interpreted and
construed in conjunction therewith. Accordingly, Landlord and Tenant hereby agree as follows: 
 1. Preparation and Approval
of Tenant Improvements Plans and Specifications. Tenant shall, at Tenant’s cost and expense, within five (5) business days of the A&R Effective Date deliver to Landlord a schematic rendering of the Tenant’s general plan for
altering the Premises in order to determine if the schematic is generally acceptable to the Landlord. The Landlord will have ten (10) business days after receipt of the schematic to inform the Tenant if the Landlord accepts or rejects the
concepts, provided that Landlord’s approval of any such schematic rendering shall in no way be deemed to constitute Landlord’s approval of any aspect of the designs, plans or specifications to be subsequently contained in the Tenant’s
Plans (as defined below). If the Landlord rejects the design concepts, the parties will meet and agree on how to proceed to acceptance of the Tenant’s concept. When a plan has been agreed upon, the Tenant shall (i) have Tenant’s
architect and engineer (who must be licensed in Massachusetts) prepare a draft of the Tenant Improvements Plans and Specifications (the “Tenant Plans”) for all Tenant Improvements (which draft must include all architectural and engineering
documents and drawings for the installation of the Tenant Improvements and must otherwise be in form and content ready to submit to the appropriate governmental authority to procure a building permit for the installation of the Tenant Improvements)
and (ii) deliver a complete copy of such Tenant Plans to Landlord for Landlord’s review and approval. Landlord shall review the draft of the Tenant and shall notify Tenant in writing within ten (10) business days after Landlord’s
receipt of same as to whether Landlord approves the Tenant Plans (which approval shall not be unreasonably withheld, conditioned or delayed). If Landlord does not approve the Tenant Plans, such written notice from Landlord to Tenant shall provide
Landlord’s specific and detailed comments and suggestions which, if incorporated into the Tenant Plans, would render the Tenant Plans acceptable to Landlord. Landlord and Tenant shall cooperate with one another in good faith to reach agreement
regarding the Tenant Plans as soon as practicable. The approval by Landlord of the Tenant Plans shall not be construed as a representation, warranty or assurance by Landlord that the Tenant Plans comply with applicable statutes, laws, ordinances,
codes, rules, regulations and requirements and shall not constitute the assumption of any liability on Landlord’s part for their accuracy or compliance with such applicable statutes, laws, ordinances, codes, rules, regulations and requirements.


  
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 2. Construction of Tenant Improvements. 

(a) Following Landlord’s approval of the Tenant Plans, Tenant shall cause the Tenant Improvements to be constructed and installed
(i) using new materials of good quality and (ii) in a workmanlike and proper manner. Landlord shall supply, and Tenant shall pay for, all electrical services and other utilities to the Premises during the installation and construction of
the Tenant Improvements. Landlord and Landlord’s representatives shall be entitled to enter the Premises from time to time during the installation of the Tenant Improvements for the purpose of inspecting same and confirming compliance by Tenant
with the terms and provisions of the Lease, including this Exhibit B. 
 (b) Tenant shall not permit any mechanic’s
lien(s) or other liens to be placed upon the Premises, the Building or the Land as a result of or in connection with the construction and installation of the Tenant Improvements; and in the event any such lien(s) shall be placed upon the Premises,
the Building or the Land as a result of or in connection with the construction and installation of the Tenant Improvements, Tenant shall arrange to have the same discharged at Tenant’s sole cost and expense, and if Tenant fails to do so within
ten (10) days, Landlord may bond over the same at Tenant’s expense. 
 (c) With respect to the construction of the
Tenant Improvements, Tenant shall contract directly with a general contractor (“Tenant’s General Contractor”). The following terms and provisions shall apply with regard to Tenant’s General Contractor: 

(1) The terms of any agreement to install the Tenant Improvements shall be governed by a separate construction contract
signed by Tenant and Tenant’s General Contractor, and the construction contract shall be prepared using the applicable AIA contract form for such projects. A true and complete copy of such construction contract (and all subsequent amendments
thereto) shall be delivered by Tenant to Landlord promptly after the execution thereof. 
 (2) Tenant shall not
commence (or cause or permit to be commenced) the construction of the Tenant Improvements until all aspects of the Tenant Plans have been approved by Landlord and until Tenant’s General Contractor has delivered to Landlord original certificates
(in form and amounts reasonably satisfactory to Landlord) of the general contractor’s “builder’s risk” and general liability insurance policies naming Landlord as an additional insured. Such insurance policies must be issued by
and binding upon an insurance company approved by Landlord, which approval shall not be unreasonably withheld or delayed; and Tenant shall use commercially reasonable efforts to ensure that such certificates of insurance state that the issuing
insurance company will not cancel the coverage, fail to renew the coverage or change the coverage in a manner that would cause Tenant to no longer be in compliance with Tenant’s insurance obligations under this Exhibit B without first giving at
least thirty (30) days’ prior written notice to Landlord, or, in the event the insurance company is unable or unwilling to provide such notice to Landlord, then without first giving at least thirty (30) days’ prior written notice
to Tenant, in which event Tenant shall promptly provide Landlord with 







 
written notice enclosing a copy of such notice from the insurance company. Further, Tenant shall cause such builder’s risk and general liability insurance coverage naming Tenant’s
general contractor as the insured and naming Landlord as an additional insured to be maintained in full force and effect during the entire period the Tenant Improvements are being constructed. Additionally, Tenant shall cause Tenant’s General
Contractor to maintain workers’ compensation insurance and all other insurance coverages (if any) that are required by applicable law and shall, if requested by Landlord, promptly provide to Landlord reasonable documentary evidence of such
additional insurance coverage(s). 
 (d) Landlord agrees to contribute the Tenant Improvements Allowance toward the hard costs
of constructing the Tenant Improvements, as well as Tenant’s reasonable, third-party, out-of-pocket expenses incurred in connection with the design, architectural and engineering costs related thereto, installation of the Tenant’s personal
property, telecommunications and computer cabling, adjusting the HVAC distribution system, and in connection with the relocation of certain of Tenant’s employees and personnel to the Premises from Tenant’s existing leased premises at 25
Hartwell Avenue, Lexington, Massachusetts (collectively, the “Improvement Costs”). The agreements of Landlord and Tenant regarding the Tenant Improvements Allowance are as follows: 

(1) In the event the Improvement Costs exceed the Tenant Improvements Allowance, Tenant shall be responsible for bearing
and paying such excess costs (the “Excess Costs”). 
 (2) Landlord shall make disbursements of the
Tenant Improvements Allowance in accordance with the payment applications provided by Tenant for expenses incurred and documented by Tenant, or by Tenant’s General Contractor, with such General Contractor applications certified by Tenant’s
architect or project manager. The final disbursement shall be paid upon completion of the Tenant Improvements and Landlord’s receipt of all Final Documents (as defined below). Landlord’s obligation to make such disbursements shall be
subject to the following conditions: 
 (i) Landlord shall not be obligated to make any disbursements of the
Tenant Improvements Allowance prior to Tenant’s delivery to Landlord of (i) evidence of Tenant’s receipt of all necessary permits required to commence construction of the Tenant Improvements, (ii) a fully-executed copy of
Tenant’s construction contract with Tenant’s General Contractor and (iii) a final, complete copy of the Tenant Plans as agreed to by Landlord and Tenant. 

(ii) Landlord shall not be obligated to make more than one disbursement of the Tenant Improvements Allowance in any
calendar month. Landlord shall have no obligation to fund any request made later than the date that is eighteen (18) months after the date on which the A&R Lease is signed. 

(iii) Landlord shall not be obligated to make any disbursement of the Tenant Improvements Allowance or HVAC Remediation
Allowance, as the case may be, until Landlord receives current Supporting Documents (as defined 







 
herein). Landlord shall pay applicable disbursements to Tenant within thirty (30) days following Landlord’s receipt of a valid request for disbursement of the Tenant Improvements
Allowance and all appropriate Supporting Documents. 
 (iv) The obligation of Landlord to make each such
disbursement of the Tenant Improvements Allowance or HVAC Remediation Allowance is subject to the condition precedent that, on the date of such disbursement, no event has occurred and is continuing which constitutes an uncured default of Tenant
under the Lease. 
 (v) After disbursement of the Tenant Improvements Allowance (or any portion thereof) or HVAC
Remediation Allowance (or any portion thereof) by Landlord to Tenant, Tenant shall be solely responsible for disbursement to Tenant’s General Contractor, subcontractors and material suppliers of payments for the Improvement Costs; provided that
Landlord, at its option, may elect to pay portions of the Tenant Improvements Allowance directly to Tenant’s General Contractor. 
 (vi) As used herein, the term “Supporting Documents” shall mean, with respect to each disbursement (excluding the final disbursement) of the Tenant Improvements Allowance and HVAC Remediation
Allowance for payments to the Tenant’s General Contractor for Improvement Costs hereunder: 
 (A) an
affidavit signed by Tenant’s General Contractor stating the percentage of completion of the Tenant Improvements and affirming that all subcontractors, laborers, artisans, mechanics and material suppliers engaged in or supplying labor or
materials for the construction of the Tenant Improvements have been or will be (with payment of the relevant installment) paid in full prior to delinquency, with the exception only of labor and materials supplied to complete “punch list”
items; 
 (B) a Partial Waiver and Subordination of Lien with respect to the Premises, the Building and the
Land, executed by Tenant’s General Contractor and, if obtainable on the condition that they not be delivered and released except upon payment to Tenant’s General Contractor, a waiver of liens executed by all subcontractors, laborers,
artisans, mechanics and material suppliers engaged in or supplying labor or materials for the design, planning and construction of the Tenant Improvements; 
 (C) AIA documents G702 and G703 or their equivalents. 
 (D) For
reimbursement of expenses made by the Tenant directly, the Tenant shall provide paid invoices with a summary statement of why the expense is a qualifying Tenant Improvement. 







 (vii) Within twenty (20) days following Landlord’s receipt from
Tenant of the Final Documents (as defined herein) and Tenant’s request for the final disbursement of the Tenant Improvements Allowance or HVAC Remediation Allowance, as the case may be, Landlord shall make the final disbursement of the Tenant
Improvements Allowance and HVAC Remediation Allowance. As used herein, the term “Final Documents” shall mean: 
 (A) a copy of the certificate or certificates of occupancy for the Tenant Improvements issued by the Building Inspector of the Town of Bedford (provided if such certificate of occupancy is temporary in
nature, Tenant shall be obligated to diligently take all steps necessary to secure the issuance of the permanent certificate of occupancy for the Tenant Improvements, a copy of which shall be promptly delivered by Tenant to Landlord); 

(B) a written certification reasonably satisfactory to Landlord, signed by a responsible officer of Tenant certifying
(i) an itemized statement of the final, actual costs and expenses incurred by Tenant with respect to the work performed and the materials provided in connection with the construction of the Tenant Improvements, together with a true and complete
copy of all relevant invoices from Tenant’s General Contractor to Tenant therefor, and (ii) that all such costs and expenses either have been or will be (with payment of the final installment) paid in full prior to delinquency; 

(C) an affidavit signed by Tenant’s General Contractor affirming that all subcontractors, laborers, artisans,
mechanics and material suppliers engaged in or supplying labor or materials for the design, planning and construction of the Tenant Improvements have been or will be (with payment of the final installment) paid in full prior to delinquency, with the
exception only of labor and materials supplied to complete “punch list” items; 
 (D) a final waiver
of liens with respect to the Premises, and executed by Tenant’s General Contractor and, if obtainable on the condition that they not be delivered and released except upon payment to Tenant’s General Contractor, a waiver of liens executed
by all subcontractors, laborers, artisans, mechanics and material suppliers engaged in or supplying labor or materials for the design, planning and construction of the Tenant Improvements; 

(E) a written certification by Tenant’s architect or project manager to the effect that all of the Tenant
Improvements have been completed substantially (i.e., subject only to the completion of “punch list” items) in accordance with the approved Tenant Plans and applicable legal requirements; 







 (F) a complete set of “as built” plans for the Tenant
Improvements in electronic CAD format or other similar electronic format; and 
 (G) AIA documents G702 and G703
or their equivalents. 
 3. Construction of HVAC Upgrades. 

Landlord agrees to contribute the HVAC Remediation Allowance toward the design, construction and funding of the upgrades to remediate any
existing ductwork, distribution systems or control dampers comprising a part of the existing HVAC system currently serving the Building in the same manner as the design, construction and funding of the Tenant Improvements as described above, except
that Landlord’s contribution to such HVAC remediation improvements shall be a maximum of $25,000. 







 EXHIBIT C 
 Permitted Encumbrances 







  
 



 

  
 - 51-









  
 



 







  
 



 







  
 



 







  
 



 







  
 



 







  
 



 







 EXHIBIT D 
 Parking Plan 

  
 - 52-









  
 



 







 EXHIBIT E 
 Plan of Operationally Sensitive Areas 

  
 - 53-









  
 



 







 SCHEDULE 4.1 (b) 
 Environmental Reports 







 125 Middlesex Turnpike 

Bedford, Massachusetts 
 Former IMO / Baird Site 
  

							
	 Date
	  	 Author
	  	 Title
	  	 Text contents

	 Jun-87
	  	Goldman, Lawrence. GEC	  	Environmental Survey Report	  	full report
	 6-JuI-87
	  	Morris, Mary Beth. GEC	  	Environmental Survey Report	  	full report
	 8-Oct-93
	  	Tingley, Andrew. CERTIFIED	  	Phase I - Limited Site Investigation	  	full phase I report
	 3-Aug-95
	  	Tingley, Andrew, ECT	  	Supplemental Phase I - Limited Site Investigation	  	full report
	 4-Mar-96
	  	Lehman, Lisa. GTI	  	Results of Soil and Groundwater Sampling	  	analytical results
	 9-May-96
	  	Hudon, Natalie. GTI	  	RAM Plan	  	full report
	 13-Sep-96
	  	Hudon, Natalie. Fluor Daniel GTI	  	120 Day RAM Status Report: May - August, 1996	  	full report
	 16-Sep-96
	  	Uhler, Susan. GTEL	  	GTEL Analytical Results	  	analytical results
	 6-Dec-96
	  	Uhler, Susan. GTEL	  	GTEL Analytical Results	  	analytical results
	 31-Dec-96
	  	Hanna, Sara. GZA	  	Review of Reports	  	report review
	 7-Feb-97
	  	Brody, Karen. Fluor Daniel GTI	  	Phase ll Comprehensive Site Investigation Scope of Work	  	scope of work
	 7-Mar-97
	  	Brody, Karen. Fluor Daniel GTI	  	RAM Status Report: September 1996 - February 1997	  	full report
	 5-May-97
	  	Hanna, Sara. GZA	  	Additional Report Review	  	report review
	 1-Aug-97
	  	Brody, Karen. Fluor Daniel GTI	  	RAM/ Phase II Activities	  	analytical results
	 11-Aug-97
	  	Hanna, Sara. GZA	  	Phase I Environmental Site Assessment	  	full phase I report
	 11-Sep-97
	  	Brody, Karen. Fluor Daniel GTI	  	RAM Status Report: March - August 1997	  	full report
	 6-Oct-97
	  	Brody, Karen. Fluor Daniel GTI	  	RAM/ Phase II Activities	  	analytical results
	 8-Oct-97
	  	Hanna, Sara. GZA	  	Review of Reports	  	report review
	 12-Nov-97
	  	Hanna, Sara. GZA	  	Review of Analytical Data	  	data review
	 12-Nov-97
	  	Brody, Karen. Fluor Daniel GTI	  	RAM/ Phase II Activities	  	analytical results
	 21-May-98
	  	Brody, Karen. Fluor Daniel GTI	  	RAM/ Phase II Activities	  	analytical results
	 1-Aug-00
	  	Miller, McDonald, Golder Assoc.	  	Phase II Comprehensive Site Assessmentpe of Work	  	full report
	 1-Aug-00
	  	Miller, McDonald, Golder Assoc.	  	Ram Completion Report	  	full report
	 31-Jul-01
	  	Miller, McDonald, Golder Assoc.	  	Phase II Comp. Site Assessment & RAO Statement	  	full report
	 31-Jul-01
	  	Miller, McDonald, Golder Assoc.	  	R N F and Downgradient Property Status Opinion	  	full report
	 5-Jul-05
	  	Hanna, Sara. GZA	  	Summary Letter Former IMO / Baird Site	  	summary letter