Payment by Tenant. Tenant shall pay to Landlord, within thirty (30) days after delivery by Landlord to Tenant of statements therefor: # sums equal to expenditures reasonably made and obligations incurred by Landlord in connection with Landlord’s performance or cure of any of Tenant’s obligations pursuant to the provisions of [Section 19.2.5] above; and # sums equal to all expenditures made and obligations incurred by Landlord in collecting or attempting to collect the delinquent Rent or in successfully enforcing any rights of Landlord under this Lease or pursuant to law following a Tenant default, including, without limitation, all legal fees and other amounts so expended. Tenant’s obligations under this [Section 19.3] shall survive the expiration or sooner termination of the Lease Term.

Payment by Tenant. Tenant shall pay to Landlord, within ten (10) days after delivery by Landlord to Tenant of statements therefor: # sums equal to expenditures reasonably made and obligations incurred by Landlord in connection with Landlord's performance or cure of any of Tenant's obligations pursuant to the provisions of [Section 19.2.3] above; and # sums equal to all expenditures made and obligations incurred by Landlord in collecting or attempting to collect the Rent or in enforcing or attempting to enforce any rights of Landlord under this Lease or pursuant to law, including, without limitation, all legal fees and other amounts so expended. Tenant's obligations under this [Section 19.3] shall survive the expiration or sooner termination of the Lease Term.

Payment by Tenant. Upon any Event of Default, Tenant shall pay to Landlord all costs incurred by Landlord (including court costs and reasonable attorneys' fees and expenses) in # obtaining possession of the Premises, # removing and storing Tenant's or any other occupant's property, # repairing, restoring, altering, remodeling, or otherwise putting the Premises into the condition required at the expiration of the Term, # if Tenant is dispossessed of the Premises and this Lease is not terminated, reletting all or any part of the Premises (including reasonable brokerage commissions, cost of tenant finish work, and other costs incidental to such reletting), # performing Tenant's obligations which Tenant failed to perform, and # enforcing, or advising Landlord of, its rights, remedies, and recourses arising out of the default. To the full extent permitted by law, Landlord and Tenant agree the federal and state courts of the state in which the Premises are located shall have exclusive jurisdiction over any matter relating to or arising from this Lease and the parties' rights and obligations under this Lease.

Payment by Tenant. From and after the Commencement Date, Tenant shall pay as Additional Rent for the Leased Premises, Tenant’s proportionate share described below of the taxes and assessments, general and special, water rates and all other impositions, ordinary and extraordinary, of every kind and nature whatsoever, which may be levied, assessed or imposed upon the Property, or any part thereof, or upon any improvements at any time situated thereon, accruing or becoming due and payable during the term of the Lease (“Impositions”); provided, however, that the general taxes levied against the Leased Premises shall be prorated between Landlord and Tenant as of the Commencement Date for the Initial Term and as of the expiration date of the Term, the latter to be determined on the basis of the then most recently ascertainable real estate tax bills. Tenant’s proportionate share as herein defined shall be equal to the product obtained by multiplying the total amount of Impositions by seven and seventy-one hundredths percent (7.710%); provided, however, Tenant’s proportionate share of Impositions shall not include a proportionate share of any extraordinary Impositions that are triggered, identifiable, and attributable to a specific tenant in the Complex, such as the impact on water rates by another high water using tenant. Landlord shall take the benefit of the provisions of any statute or ordinance permitting any special or other assessment to be paid over a period of years, and Tenant shall be obligated to pay such Impositions payable with respect to the Term. Notwithstanding the foregoing, Tenant is receiving a tax credit from the City of Newton applicable to the Building, which Tenant has agreed to have paid directly to Landlord. Landlord shall credit against Tenant’s share of the Impositions due hereunder, the full amount of all such tax credits specifically related to the Tenant and/or Leased Premises received by Landlord. As security for the obligations contained in this Article, Tenant shall deposit monthly with Landlord, or such other entity as Landlord may designate, on the first day of each and every month of the Term, a sum equal to one‑twelfth (1/12) of Tenant’s share of the last ascertainable amount of such Impositions, or at Landlord’s election, if Landlord’s interest hereunder is subject to the lien of a mortgage or trust deed, a sum equal to one‑twelfth (1/12) of the mortgagee’s estimate of the current amount of Tenant’s share of the Impositions, which monthly deposits shall be held by Landlord or such other entity and shall be used as a fund to be applied, to the extent thereof, to the payment of said Impositions as the same become due and payable. The existence of said fund shall not limit or alter Tenant’s obligation to pay the Impositions respecting which the fund was created; provided, however, that said fund shall be fully utilized for the payment of such Impositions. Annually, within 30 days after receipt of the tax bills, Landlord shall reconcile the amounts previously paid and provide Tenant a statement in writing of the actual and adjusted amounts payable hereunder, with any changed amount becoming payable on the first day of the month commencing at least thirty days after receipt of such notice, to reflect the actual amount of said Impositions. Tenant shall pay to Landlord, or Landlord shall credit against the next payment due from Tenant, as the case may be, the difference between the estimated payments made by Tenant during the prior period and Tenant’s correct share of the actual cost and expenses for such period, as shown on such statement. Tenant shall not be entitled to interest on said fund. Such funds need not be held in trust and may be commingled with other funds of Landlord. Any unused portion of Tenant’s deposit shall be returned to Tenant at the end of the Term. Tenant’s obligation with respect to payment of such expenses and costs shall survive with expiration or termination of this Lease or the termination of Tenant’s tenancy in the Leased Premises.

Payment by Tenant. From and after the Commencement Date, Tenant shall pay as Additional Rent for the Leased Premises, Tenant’s proportionate share of the insurance cost for the policy of insurance procured by Landlord pursuant to paragraph 6.0 (and its subparagraphs and any additional commercially reasonable insurance procured by Landlord). Tenant’s obligation with respect to payment of such expenses and costs shall survive with expiration or termination of this Lease or the termination of Tenant’s tenancy in the Leased Premises. Tenant’s proportionate share as herein defined shall be equal to the product obtained by multiplying the total amount of all insurance obtained under [Section 6.0] above by six and two hundred ninety six thousandths percent (6.296%). As security for the obligations contained in this Article, Tenant shall deposit monthly with Landlord, or such other entity as Landlord may designate, on the first day of each and every month of the Term, a sum equal to one‑twelfth (1/12) of the Tenant’s share of the insurance costs or at Landlord’s election, if Landlord’s interest hereunder is subject to the lien of a mortgage or trust deed, a sum equal to one‑twelfth (1/12) of the mortgagee’s estimate of the current amount of Tenant’s share of the insurance costs, which monthly deposits shall be held by Landlord or such other entity and shall be used as a fund to be applied, to the extent thereof, to the payment of said insurance costs. The existence of said fund shall not limit or alter Tenant’s obligation to pay the insurance costs respecting which the fund was created; provided, however, that said fund shall be fully utilized for the payment of such costs. The amount of the fund shall be readjusted annually to reflect the actual costs of said insurance. Tenant shall not be entitled to interest on said fund. Such funds need not be held in trust and may be commingled with other funds of Landlord.

By Tenant. This Paragraph 6.1 does not relate to the Tenant Improvements installed in accordance with and pursuant to the Work Letter, but to alterations, modifications, and improvements made after the date the Tenant Improvements are substantially completed. Tenant shall not make any alterations to or modifications of the Leased Premises or construct any improvements within the Leased Premises until Landlord shall have first approved, in writing, the plans and specifications therefor, which approval may be withheld in Landlord’s sole discretion as to alterations, modifications, and improvements which affect the Building structure or materially affect Building systems, and otherwise such approval may be withheld in Landlord’s reasonable discretion; provided, however, that Tenant, without Landlord’s prior written consent, but upon not less than ten (10) business days’ prior written notice to Landlord, may make “Non-Consent Alterations,” defined herein to mean alterations (including removal and rearrangement of prior alterations) which # do not adversely affect any systems or equipment of Building 3 or the Property, # do not involve or affect the structural integrity or any structural components of Building 3, # do not require a building permit, # do not involve the expenditure of more than $150,000.00 per alteration, and # do not exceed $1,000,000 in the aggregate over any 36-month period during the Term of this Lease. Tenant’s written request shall also contain a request for Landlord to elect whether or not it will require Tenant to remove the subject alterations, Building 3

By Tenant. Tenant shall not sublet the Leased Premises or any portion thereof or assign its interest in this Lease, or permit the occupancy of the Leased Premises by other than Tenant, whether voluntarily or by operation of Law, without Landlord’s prior written consent which shall not be unreasonably withheld, conditioned, or delayed. Any attempted subletting or assignment, or occupancy of the Leased Premises by other than Tenant, without Landlord’s prior written consent, at Landlord’s election, shall constitute a default by Tenant under the terms of this Lease. The acceptance of rent by Landlord from any person or entity other than Tenant, or the acceptance of rent by Landlord from Tenant with knowledge of a violation of the provisions of this paragraph, shall not be deemed to be a waiver by Landlord of any provision of this Article or this Lease or to be a consent to any subletting by Tenant or any assignment of Tenant’s interest in this Lease. Without limiting the circumstances in which it may be reasonable for Landlord to withhold its consent to an assignment or subletting, Landlord and Tenant acknowledge that it shall be reasonable for Landlord to withhold its consent in the following instances:

By Tenant. Tenant hereby indemnifies and agrees to defend, save and hold Landlord harmless from and against any and all Claims for injury or death to persons or damage to property occurring within or about the Premises, arising directly or indirectly out of use or occupancy of the Premises or a breach or default by Tenant in the performance of any of its obligations hereunder, except to the extent caused by the willful misconduct or gross negligence of Landlord. Landlord shall not be liable to Tenant for, and Tenant assumes all risk of damage to, personal property (including, without limitation, loss of records kept within the Premises). Tenant further waives any and all Claims for injury to Tenant’s business or loss of income relating to any such damage or destruction of personal property (including, without limitation, any loss of records). Landlord shall not be liable for any damages arising from any act, omission or neglect of any third party.

By Tenant. Subject to Landlord’s obligations under [Section 14(a)], [Section 14(c)], and [Part V of Exhibit B] attached hereto, and the maintenance, repair, and replacement obligations of the Declarant (as defined in the Master CC&Rs) with respect to Common Areas and Special Common Areas (each as defined in the Master CC&Rs) located on the Premises, Tenant shall, at its own cost and expense, make all repairs to the Premises and every portion thereof, and keep and maintain the Premises (including the landscaping, the Structural Components and the Building Systems) in good condition and repair, normal wear and tear excepted and subject further to any damage caused by casualty or condemnation not required to be repaired by Tenant; provided, however, that Tenant may require by written notice to Landlord that Landlord maintain the landscaping on the Premises, and, in such event, Tenant shall reimburse Landlord for its actual out-of-pocket costs incurred in connection therewith) within thirty (30) days following Tenant’s receipt of each invoice evidencing such costs. Notwithstanding the foregoing, if any of the repairs Tenant is obligated to make pursuant to this [Section 14(b)] (1) affect the connections of the life safety systems and fire alarm systems in the Building or # could reasonably be expected to materially and adversely affect another Building System or the structural integrity of the Premises, then such repairs shall be completed by a contractor reasonably approved by (and subject to the management and oversight of) Landlord at Tenant’s sole cost and expense.

By Tenant. Tenant hereby indemnifies and agrees to defend (at Landlord’s option and with counsel reasonably acceptable to Landlord), save and hold Landlord harmless from and against any and all Claims for injury or death to persons or damage to property occurring within or about the Premises, arising directly or indirectly out of use or occupancy of the Premises or a breach or default by Tenant in the performance of any of its obligations hereunder, except to the extent caused by the willful misconduct or gross negligence of Landlord or its employees. Landlord shall not be liable to Tenant for, and Tenant assumes all risk of damage to, personal property (including, without limitation, loss of records kept within the Premises). Tenant further waives any and all Claims for injury to Tenant’s business or loss of income relating to any such damage or destruction of personal property (including, without limitation, any loss of records). Landlord shall not be liable for any damages arising from any act, omission or neglect of any tenant in the Project or of any other third party.