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.

Rent Abatement. If Landlord or Tenant does not elect to terminate this Lease under Paragraph 25.3 or Paragraph 25.4, this Lease shall remain in full force and effect provided that Tenant shall be entitled to a reduction of Base Rent and Tenant’s Proportionate Share of Operating Expenses in proportion that the areas of the Premises rendered untenantable bears to the total rentable area of the Premises during the period beginning with the date such rentable area becomes untenantable and Tenant ceases to use such rentable area for the normal conduct of its business and ending five (5) Business Days after Substantial Completion of Landlord’s Restoration Work. For purposes of this Paragraph 25, the term “Substantial Completion” or “Substantially Complete” shall have the same meaning as provided in the Tenant Improvement Agreement with respect to Substantial Completion of the Base Building Improvements.

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 Five Hundred Twenty-Six Thousand Six Hundred Eighty and 00/100 Dollars ($526,680.00) (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 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.

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, 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.

Abatement of Rent. In the event that ​ is prevented from using, and does not use (except for the maintenance of a skeleton crew within the Premises for such purposes as securing ​’s records and files, forwarding telephone communications, correspondence and deliveries, and otherwise enabling those aspects of ​’s business operations previously conducted within the Premises to be carried on from an alternative location), the Premises or any portion thereof, as a result of # any repair, maintenance or alteration performed by ​, or which ​ failed to perform, after the Lease Commencement Date and required by the Lease, which materially and adversely interferes with ​’s use of the Premises, # any failure to provide services, utilities or access to the Premises as required by this Lease attributable to the negligent act or omission of ​ or its agents, employees, or representatives, or # any “Renovations,” as that term is defined in Section 29.29 of this Lease (such set of

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”).

BASE RENT. Tenant shall pay, without prior notice or demand, to Landlord or Landlord's agent at the management office of the Project, or at such other place as Landlord may from time to time designate in writing, by a check, wire transfer, ACH or other electronic means acceptable to Landlord, for currency which, at the time of payment, is legal tender for private or public debts in the United States of America, base rent ("Base Rent XE "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, except to the extent expressly provided otherwise in this Lease. The Base Rent for the first full month of the Lease Term shall be paid at the time of Tenant's execution of this Lease. If any Rent (hereinafter defined) 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.

Base Rent. Simultaneously with Subtenant’s execution of the Sublease, Subtenant shall pay to Sublandlord via wire or cashier’s check one (1) month’s Base Rent in the amount of one hundred twenty-nine thousand two hundred eighty-one 40/100 dollars ($129,281.40). Beginning Month Thirteen # of the Term, there will be two and fifty hundredths percent (2.50%) annual increases of the Base Rent as set forth in the Rent Schedule herein. If the Commencement Date is not the first of a month, on the Commencement date Subtenant shall pay, via wire of cashier’s check, Base Rent in a pro-rated amount for the partial month between the Commencement Date and the last day of the month. After the Commencement Date, Base Rent shall be paid via wire or via cashier’s check, monthly on the first of the month starting on the first day of the second full month.

Base Rent and Additional Rent, as defined in Paragraph 4.B below, with the exception of the initial Base Rent as provided in Paragraph 4.C below, shall be paid on or before the first (1st) day of each month. Base Rent and Additional Rent shall be payable without notice or demand and without any deduction, offset, or abatement, in lawful money of the United States of America. Base Rent and Additional Rent shall be paid directly to Sublessor at the applicable address set forth below Sublessor’s signature to this Sublease or such other address as may be designated in writing by Sublessor. Base Rent and Additional Rent for any period during the Term hereof which is for less than one (1) month of the Term shall be a pro rata portion of the monthly installment based on a thirty (30) day month. If an increase in Base Rent becomes effective on a date other than the first day of a calendar month, the Base Rent for that month shall be the sum of the two applicable rates, each prorated for the portion of the month during which the rate is in effect.

The “Property Management Fee” shall equal three percent (3.00%) of Base Rent due from Tenant. Tenant shall pay the Property Management Fee in accordance with Section 9.2 with respect to the entire Term, including any extensions thereof or any holdover periods by Tenant, regardless of whether Tenant is obligated to pay Base Rent, Operating Expenses or any other Rent with respect to any such period or portion thereof. During the Abatement Period (and any period of occupancy prior to the Term as further described in Section 9.5), the Property Management Fee shall be calculated as if Tenant were paying Seventy-Five Thousand Two Hundred Forty and 00/100 Dollars ($75,240.00) per month for Base Rent.

Notwithstanding anything to the contrary contain herein, so long as Tenant is not in Default under this Lease, for the period commencing on the Commencement Date through the last day of the 30th full month after the Commencement Date (the “Partial Abatement Period”), Tenant shall only be required to pay Base Rent with respect to 11,000 rentable square feet of the Premises. Commencing on the first day of the 31st full month after the Commencement Date, Tenant shall commence paying Base Rent with respect to the entire Premises.

Notwithstanding anything to the contrary contained herein and provided that Tenant faithfully performs all of the terms and conditions of the Lease, as amended by this Third Amendment, Landlord hereby agrees to abate Tenant's obligation to pay monthly Base Rent for the first ten (10) full calendar months of the Extended Term. During such abatement periods, Tenant shall still be responsible for the payment of all of its other monetary obligations under the Lease, as amended. In the event of a default by Tenant under the terms of the Lease, as amended, that results in early termination pursuant to the provisions of [Section 13].A of the Original Lease, then as a part of the recovery set forth in [Section 13].B of the Original Lease, Landlord shall be entitled to the recovery of the monthly Base Rent that was abated under the provisions of this [Section 5]. The amount of Base Rent to be abated pursuant to this [Section 5] above may be referred herein as the "Abated Rent Amount." Notwithstanding the foregoing or anything to contrary contained herein, upon written notice to Tenant, Landlord shall have the option to purchase all or any portion of Tenant's Abated Rent Amount by paying such amount to Tenant, in which case the amount so paid to Tenant shall nullify an equivalent amount of abatement of Tenant's Base Rent as to the period so designated by Landlord in Landlord's written notice to Tenant.

Abatement Period: the period beginning on the Lease Commencement Date and ending on the Rent Commencement Date.

as set forth in the schedule above (the "Partial Base Rent Abatement Amortization"). Tenant agrees to use commercially reasonable efforts to commence construction of Phase 2 (as defined in the Second Amendment) by ​ and to cause substantial completion of construction of Phase 2 on or before ​, as evidenced by a certificate of substantial completion signed by the Architect (as that term is defined in the Work Letter). In the event construction of the Phase 2 is not complete (as evidenced per the prior sentence) by ​ (the "Construction Deadline Date"), then Landlord may elect, in its sole and absolute discretion, that the entirety of the amount of any Partial Base Rent Abatement that has not then been repaid by Tenant on an amortized basis pursuant to the schedule above as of the Construction Deadline Date (i.e., a total of ​) shall become immediately due and payable as Additional Rent.

circumstances as set forth in items (i), (ii) or (iii), above, to be known as an “Abatement Event”), then ​ shall give ​ notice of such Abatement Event, and if such Abatement Event continues for five (5) consecutive business days after ​’s receipt of any such notice (the “Eligibility Period”), then the Base Rent and ​’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 ​ continues to be so prevented from using, and does not use, the Premises or a portion thereof, in the proportion that the rentable area of the portion of the Premises that ​ is prevented from using, and does not use, bears to the total rentable area of the Premises; provided, however, in the event that ​ 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 ​ to effectively conduct its business therein, and if ​ does not conduct its business from such remaining portion, then for such time after expiration of the Eligibility Period during which ​ is so prevented from effectively conducting its business therein, the Base Rent and ​’s Share of Direct Expenses for the entire Premises shall be abated for such time as ​ continues to be so prevented from using, and does not use, the Premises. If, however, ​ reoccupies any portion of the Premises during such period (except for the maintenance of a skeleton crew as provided above), 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 ​ from the date ​ 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 ​’s right to abate rent shall be governed by the terms of such Article 11 or 13, as applicable, and the Eligibility Period shall not be applicable thereto. Such right to abate Base Rent and ​’s Share of Direct Expenses shall be ​’s sole and exclusive monetary remedy for rent abatement at law or in equity for an Abatement Event. Except as provided in this Section 19.5.2, or in Articles 11 or 13, nothing contained herein shall be interpreted to mean that ​ is excused from paying Rent due hereunder.

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.

New Minimum Annual Rent shall be payable, without demand, in advance, in equal consecutive monthly installments, on the first day of each month throughout the Term, without abatement, deduction, or set-off.