Rent. All Rent and other payments required to be made by Tenant to Landlord hereunder shall be payable to Landlord at Landlord’s Remittance Address set forth in the Basic Lease Information, or at such other address as Landlord may specify from time to time by written notice delivered in accordance herewith. Tenant’s obligation to pay Rent and any other amounts to Landlord under the terms of this Lease shall not be deemed satisfied until such Rent and other amounts have been actually received by Landlord.

RENT. LESSEE shall pay LESSOR base rent of one hundred five thousand nine hundred ninety nine (105,999) U.S. dollars per year, drawn on a U.S. bank, in monthly installments of ​ on or before the first day of each calendar month, without offset or deduction. One monthly rental payment, plus an appropriate traction of a monthly payment for any portion of a month at the commencement of the lease term, shall be made upon LESSEE’S execution of this lease. All payments shall be made to LESSOR at 200 West Cummings Park, Woburn, Massachusetts 01801, or at such other place designated in writing by LESSOR. If the “Cost of Living” has increased as shown by the Consumer Price Index (Boston, Massachusetts, all items, all urban consumers), U.S. Bureau of Labor Statistics (“Index”), then base rent due during each calendar year of this lease and all extensions thereof shall be adjusted in proportion to any increase in the Index. The base month from which to determine the amount of each increase shall be ​, which figure shall be compared with the figure for ​, and each November thereafter to determine the increase (if any) in base rent to be paid during the following calendar year commencing each January 1.

Rent Abatement. Notwithstanding anything to the contrary contained herein and provided that no default by Tenant occurs hereunder beyond any applicable notice and cure period, Landlord hereby agrees that Tenant shall not be required to pay monthly Base Rent for the second (2nd) month of the initial Term through the eighth (8th) month of the initial Term (the “Abatement Period”). The total amount of monthly Base Rent abated during the Abatement Period shall not exceed ​ (the “Abatement Amount”); provided that the Abatement Amount shall not be increased as a result of any increase in Base Rent arising from Landlord’s disbursement of any Additional TI Allowance in accordance with [Sections 4.2 and 4.4]4] of this Lease. During the Abatement Period, Tenant shall still be responsible for the payment of all of its other monetary obligations under this Lease, including, all Additional Rent, including Operating Expenses the Property Management Fee and costs of utilities for the Premises. In the event of a default by Tenant under the terms of this Lease that results in termination of this Lease in accordance with the provisions of this Lease, then as a part of the recovery set forth in this Lease and in addition to any other remedies to which Landlord is entitled pursuant to [Section 31] hereof, Landlord shall be entitled to the immediate recovery, as of the day prior to such termination, of the unamortized Abatement Amount that was abated under the provisions of this [Section 8].

Option Rent. The annual Rent payable by Tenant during the Option Term (the "Option Rent") shall be equal to the "Fair Rental Value," as that term is defined below, for the Premises as of the commencement date of the Option Term. The "Fair Rental Value," as used in this Lease, shall be equal to the annual rent per rentable square foot (including additional rent and considering any "base year" or "expense stop" applicable thereto), including all escalations, at which tenants (pursuant to leases consummated within the twelve (12) month period preceding the first day of the Option Term), are leasing non-sublease, non-encumbered, non-equity space which is not significantly greater or smaller in size than the subject space, with a comparable level of improvements (excluding any property that Tenant would be allowed to remove from the Premises at the termination of the Lease), for a comparable lease term, in an arm's length transaction, which comparable space is located in the "Comparable Buildings," as that term is defined in this [Section 2.2.2], below (transactions satisfying the foregoing criteria shall be known as the "Comparable Transactions"), taking into consideration the following concessions (the "Concessions"):

BASE RENT. Tenant shall pay, without prior notice or demand, to Landlord at the address set forth in [Section 4] of the Summary, or, at Landlord's option, at such other place as Landlord may from time to time designate in writing, by a check or ACH (pursuant to instructions provided by Landlord) for currency which, at the time of payment, is ​ tender for private or public debts in the United States of America, base rent ("Base Rent") as set forth in [Section 4] of the Summary, payable in equal monthly installments as set forth in [Section 4] of the Summary in advance on or before the first day of each and every calendar month during the Lease Term, without any setoff or deduction whatsoever. The Base Rent for the first full month of the Lease Term shall be paid six (6) months prior to the estimated Lease Commencement Date. If any Rent payment date (including the Lease Commencement Date) falls on a day of the month other than the first day of such month or if any payment of Rent is for a period which is shorter than one month, the Rent for any fractional month shall accrue on a daily basis for the period from the date such payment is due to the end of such calendar month or to the end of the Lease Term at a rate per day which is equal to 1/365 of the applicable annual Rent. All other payments or adjustments required to be made under the terms of this Lease that require proration on a time basis shall be prorated on the same basis.

Additional Rent. In addition to Base Rent, Tenant agrees to pay to Landlord as additional rent (“Additional Rent”): # commencing on the Commencement Date, Tenant’s Share of “Operating Expenses” (as defined in [Section 5]). and # any and all other amounts Tenant assumes or agrees to pay under the provisions of this Lease, including, without limitation, any and all other sums that may become due by reason of any default of Tenant or failure to comply with the agreements, terms, covenants and conditions of this Lease to be performed by Tenant, after any applicable notice and cure period.

Base Rent. Tenant shall continue paying Base Rent with respect to the Original Premises as provided for in the Lease through ​. Commencing on the Expansion Premises Commencement Date, Tenant shall pay Base Rent for the Expansion Premises at the same Base Rent per rentable square foot that Tenant is then paying for the Original Premises. Commencing on ​, Tenant shall commence paying Base Rent with respect to the entire Premises (the Original Premises and the Expansion Premises) in the amount of ​ per rentable square foot of the entire Premises per month. Base Rent for the Premises shall be increased on ​, and on each subsequent July 1st during the Base Term (each, an “Premises Adjustment Date”) by multiplying the Base Rent payable with respect to the Premises immediately before such Premises Adjustment Date by the Rent Adjustment Percentage and adding the resulting amount to the Base Rent payable with respect to the Premises immediately before such Premises Adjustment Date.

No Rent Abatement. Tenant shall continue to pay all Rent due or accruing under this Lease during any Clean-up, and shall not be entitled to any reduction, offset or deferral of any Base Rent or Additional Rent due or accruing under this Lease during any such Clean-up.

Abatement of Rent. In the event that Tenant is prevented from using, and does not use, the Premises or any portion thereof, as a result of # any repair, maintenance or alteration performed by Landlord, or which Landlord failed to perform, after the Lease Commencement Date and required by this Lease, which substantially interferes with Tenant's use of the Premises, or # any failure to provide or allow services, utilities or access to the Premises as required by this Lease (either such set of circumstances as set forth in items [(i) or (ii)])], above, to be known as an " XE "Abatement Event" Abatement Event"), then Tenant shall give Landlord notice of such Abatement Event, and if such Abatement Event continues for five (5) consecutive business days after Landlord's receipt of any such notice (the " XE "Eligibility Period" Eligibility Period") and either # Landlord does not diligently commence and pursue to completion the remedy of such Abatement Event, # Landlord receives proceeds from its rental interruption insurance which covers such Abatement Event or # Landlord does not complete the remedy of such Abatement Event within ten (10) days from when the Abatement Event commenced, then the Base Rent, Tenant's Share of Direct Expenses shall be abated or reduced, as the case may be, after expiration of the Eligibility Period for such time that Tenant continues to be so prevented from using, for the normal conduct of Tenant's business, the Premises or a portion thereof, in the proportion that the rentable area of the portion of the Premises that Tenant is prevented from using, and does not use, bears to the total rentable area of the Premises; provided, however, in the event that Tenant is prevented from using, and does not use, a portion of the Premises for a period of time in excess of the Eligibility Period and the remaining portion of the Premises is not sufficient to allow Tenant to effectively conduct its business therein, and if Tenant does not conduct its business from such remaining portion, then for such time after expiration of the Eligibility Period during which Tenant is so prevented from effectively conducting its business therein, the Base Rent and Tenant's Share of Direct Expenses for the entire Premises shall be abated for such time as Tenant continues to be so prevented from using, and does not use, the Premises. If, however, Tenant reoccupies any portion of the Premises during such period, the Rent allocable to such reoccupied portion, based on the proportion that the rentable area of such reoccupied portion of the Premises bears to the total rentable area of the Premises, shall be payable by Tenant from the date Tenant reoccupies such portion of the Premises. To the extent an Abatement Event is caused by an event covered by Articles 11 or 13 of this Lease, then Tenant's right to abate rent shall be governed by the terms of such [Article 11 or 13]3], as applicable, and the Eligibility Period shall not be applicable thereto. Such right to abate Base Rent and Tenant's Share of Direct Expenses shall be Tenant's sole and exclusive remedy for rent abatement at law or in equity for an Abatement Event. Except as provided in this [Section 19.5.2], nothing contained herein shall be interpreted to mean that Tenant is excused from paying Rent due hereunder.

Payment of Rent. Rent shall be paid by Subtenant to Sublandlord at the address for Sublandlord set forth in [Section 15] below (or such other place as Sublandlord may designate in writing) without prior notice or demand therefore. In the event that the Commencement Date is not the first day of a calendar month or the Termination Date is not the last day of a calendar month, the installment of Rent for such month shall be prorated. All payments shall be made payable to ​ unless otherwise designated in writing by Sublandlord and shall be made by wire or cashier’s check.

Nonpayment of Rent. Tenant fails to pay any Base Rent or any Additional Rent as and when such rent becomes due and payable and such failure is not cured within five (5) days after written notice from Landlord that said amount was not paid when due, provided that if Tenant has previously received two (2) or more notices from Landlord during the immediately preceding twelve (12) months period stating that Tenant failed to pay any Base Rent or Additional Rent required to be paid by Tenant under this Lease when due, then Landlord shall not be required to deliver any notice to Tenant and a default shall immediately occur upon any failure by Tenant to pay any Rent or any other charge required to be paid under the Lease when due.

Abatement of Rent. Notwithstanding the foregoing, but subject to the terms and provisions contained in [Section 19.2], the aggregate amount of Base Rent, Tenant’s Proportionate Share of Operating Charges and Tenant’s Proportionate Share of Real Estate Taxes shall be abated from the Lease Commencement Date until the Rent Commencement Date (the “Abatement Period”).

Certified Rent Roll. A copy of the Rent Roll dated no earlier than five (5) business days prior to the Closing Date together with a certificate executed by ​ in the form of [Exhibit H] attached hereto and made a part hereof;

Base Rent Abatement. Provided that Tenant is not then in default of the terms of the Lease, after expiration of any applicable notice and cure periods, Tenant will have no obligation to pay any Base Rent with respect to the Substitute Premises for the period for the first (1st) month of the Substitute Premises Term. Notwithstanding the foregoing, Tenant’s Share of annual Direct Expenses shall not be abated during the Substitute Premises Term.

Defined Terms. For purposes of this Agreement, the definitions of terms contained in the Plan hereby are incorporated by reference, except to the extent that any such term is specifically defined in this Agreement.

Defined Terms. Unless otherwise defined herein, capitalized terms used herein have the meanings assigned to them in the Credit Agreement.

Defined Terms. For purposes of this [Section 2.12(e)], the term “Applicable Law” includes FATCA.