Tenant Improvement Allowance. Commencing as of the Execution Date, Tenant shall be entitled to use the "Tenant Improvement Allowance", as defined in Section 5 of the Summary to this Lease, for the costs relating to the initial design and construction of Tenant's improvements, which are permanently affixed to the Premises or which are "Tenant Improvement Allowance Items," as that term is defined in Section 2.2.1, below (collectively, the "Tenant Improvements"). In no event shall Landlord be obligated to make disbursements pursuant to this Tenant Work Letter or otherwise in connection with Tenant's construction of the Tenant Improvements or any Tenant Improvement Allowance Items, as defined below, in a total amount which exceeds the sum of the Tenant Improvement Allowance. All Tenant Improvements for which the Tenant Improvement Allowance has been made available shall be deemed Landlord's property under the terms of the Lease; provided, however, Landlord may, by written notice to Tenant given concurrently with Landlord's approval of the "Final Working Drawings", as that term is defined in Section 3.3, below, require Tenant, prior to the end of the Lease Term, or given following any earlier termination of this Lease, at Tenant's expense, to remove any Tenant Improvements and to repair any damage to the Premises and Building caused by such removal and return the affected portion of the Premises to a Building standard general office condition, provided, however, that Landlord may not require Tenant to remove any Alterations which are otherwise consistent with typical tenant improvements in the biotechnology or pharmaceutical industries. Landlord hereby acknowledges and agrees that the following do not need to be removed if installed: clean suites, and any office space. Any portion of the Tenant Improvement Allowance that is not disbursed or allocated for disbursement by December 31, 2020, shall revert to Landlord and Tenant shall have no further rights with respect thereto.

Tenant Improvement Allowance. Tenant shall be entitled to a one-time tenant improvement allowance (the "Tenant Improvement Allowance") in the amount set forth in Section 5 of the Summary for the costs relating to the initial design and construction of Tenant's improvements (the "Tenant Improvements"). In no event shall Landlord be obligated to make disbursements pursuant to this Tenant Work Letter in a total amount which exceeds the Tenant Improvement Allowance. In the event that the Tenant Improvement Allowance is not fully utilized by Tenant on or before the date that occurs eighteen (18) months following the Lease Commencement Date (as deadline date may be extended by Force Majeure and/or Landlord Delay occurring after the Lease Commencement Date), then such unused amounts shall revert to Landlord, and Tenant shall have no further rights with respect thereto. Any Tenant Improvements that require the use of Building risers, raceways, shafts and/or conduits, shall be subject to Landlord's reasonable rules, regulations, and restrictions, including the requirement that any riser cabling vendor must be selected from a list provided by Landlord, and that the amount and location of any such cabling must be approved by Landlord. All Tenant Improvements for which the Tenant Improvement Allowance has been made available shall be deemed Landlord's property under the terms of the Lease. Tenant shall not be required to remove any Tenant Improvements upon Tenant’s surrender of the Premises.

Tenant Improvement Allowance. Commencing as of the Possession Date, Tenant shall be entitled to use the "Tenant Improvement Allowance", as defined in Section 5 of the Summary to this Lease, for the costs relating to the initial design and construction of Tenant's improvements, which are permanently affixed to the Premises or which are "Tenant Improvement Allowance Items," as that term is defined in Section 2.2.1, below (collectively, the "Tenant Improvements"). In addition to the Tenant Improvement Allowance Landlord will reimburse Tenant in an amount not to exceed $5,360,530.00 (the "Base Building Allowance"), for actual costs incurred by Tenant in connection with certain infrastructure work (that is approved in advance by Landlord, such approval not to be unreasonably withheld, conditioned or delayed) (the “Base Building Work”) to be performed by Tenant with respect to the HVAC system, including, which may include (subject to Landlord’s approval, such approval not to be unreasonably withheld, conditioned or delayed), without limitation, installation, repair and/or replacement of HVAC systems, ductwork, serving a 1,000 Kw generator and related equipment and piping, architectural finishes, manufacturing and lab utility generation and distribution, power distribution, air filtration and purification, electrical work, and other systems and equipment that exclusively serve the Premises (the "Base Building Costs"), provided that Tenant separately accounts for such Base Building Costs. In connection with the foregoing, Landlord and Tenant agree to work in good faith with one another to develop a mutually agreeable scope of upgrades and modifications to the HVAC system serving the Building. The Base Building Allowance will be disbursed in the same manner as Landlord disburses the Tenant Improvement Allowance pursuant to this Tenant Work Letter. Such Base Building Allowance work shall # be constructed pursuant to the Tenant Work Letter, # be deemed to be a part of the Tenant Improvements, and # be deemed to be a component of the Tenant Improvement Allowance Items, but shall be accounted for and disbursed separately from the Tenant Improvement Allowance. In no event shall Landlord be obligated to make disbursements pursuant to this Tenant Work Letter or otherwise in connection with Tenant's construction of the Tenant Improvements or any Tenant Improvement Allowance Items, as defined below, in a total amount which exceeds the sum of the Tenant Improvement Allowance, Base Building Allowance and Additional TI Allowance (defined below). All Tenant Improvements that have been paid for with or reimbursed from the Tenant Improvement Allowance, Base Building Allowance, Additional TI Allowance shall be deemed Landlord's property under the terms of the Lease; provided, however, Landlord may, by written notice to Tenant given concurrently with Landlord's approval of the "Final Working Drawings", as that term is defined in [Section 3.3], below, require Tenant, prior to the end of the Lease Term, or given following any earlier termination of this Lease, at Tenant's expense, to remove any Tenant Improvements and to repair any damage to the Premises and Building caused by such removal. Any portion of the Tenant Improvement Allowance that is not disbursed or allocated for disbursement by December 31, 2022 (the “Allowance Deadline”), shall revert to Landlord and Tenant shall have no further rights with respect thereto.

Tenant Improvement Allowance. Subject to any restrictions, conditions or limitations expressly set forth in this Tenant Work Letter or in the Lease or as otherwise expressly provided by mutual written agreement of Landlord and Tenant, the cost of construction of the Tenant Improvements shall be paid or reimbursed by Landlord up to a maximum amount as set forth in Section 5 of the Summary to the Lease (the "Tenant Improvement Allowance"), which amount is being made available by Landlord to be applied towards the Cost of Improvements for the construction of the Tenant Improvements in the Premises. Tenant shall be responsible, at its sole cost and expense, for payment of the entire Cost of Improvements of the Tenant Improvements in excess of the Tenant Improvement Allowance, including (but not limited to) any costs or cost increases incurred as a result of delays (unless caused by Landlord), governmental requirements or unanticipated conditions (unless caused by Landlord), and for payment of any and all costs and expenses relating to any alterations, additions, improvements, furniture, furnishings, equipment, fixtures and personal property items which are not eligible for application of Tenant Improvement Allowance funds under the restrictions expressly set forth below in this paragraph, but Tenant shall be entitled to use or apply the entire Tenant Improvement Allowance toward the Cost of Improvements of the Tenant Improvements (subject to any applicable restrictions, conditions, limitations, reductions or charges set forth in the Lease or in this Tenant Work Letter) prior to being required to expend any of Tenant’s own funds for the Tenant Improvements. The funding of the Tenant Improvement Allowance shall be made on a monthly basis or at other convenient intervals mutually approved by Landlord and Tenant and in all other respects shall be based on such commercially reasonable disbursement conditions and procedures as Landlord, Project Manager and Landlord’s lender (if any) may reasonably prescribe. Notwithstanding the foregoing provisions, under no circumstances shall the Tenant Improvement Allowance or any portion thereof be used or useable by Tenant for any moving or relocation expenses of Tenant, or for any Cost of Improvement (or any other cost or expense) associated with any moveable furniture or trade fixtures, personal property or any other item or element which, under the applicable provisions of the Lease, will not become Landlord’s property and remain with the Building upon expiration or termination of the Lease, and except as otherwise expressly provided in this Tenant Work Letter or expressly approved by Landlord in writing, any portion of the Tenant Improvement Allowance which has not been claimed or drawn by Tenant prior to the later to occur of # the date that is 18 months after the Lease Commencement Date, and # the date of receipt of the Substantial Completion Certificate, shall expire and shall no longer be available to Tenant thereafter. Notwithstanding anything to the contrary herein, the Tenant Improvements shall not include (and Landlord shall be solely responsible for and the Tenant Improvement Allowance shall not be used for) the following: # costs incurred due to the presence of any Hazardous Materials in the Premises, if any; # costs to bring the Project into compliance with Applicable Laws to the extent required in order to allow Tenant to obtain a certificate of occupancy or its [[Organization A:Organization]] equivalent, for the Premises for the Permitted Use assuming a normal and customary office occupancy density;

Other Terms. Landlord shall only be obligated to make disbursements from the Tenant Improvement Allowance to the extent costs are incurred by Tenant for Tenant Improvement Allowance Items. All Tenant Improvement Allowance Items for which the Tenant Improvement Allowance has been made available shall be deemed Landlord's property under the terms of this Lease; provided, however, Landlord may, by written notice to Tenant at the time of Landlord's approval of the “Final Working Drawings,” as that term is defined in Section 3.3, below, require Tenant, at Tenant's expense, to remove, at the expiration or sooner termination of the Lease Term, any Tenant Improvements which are non-general business office improvements and to repair any damage to the Premises and Building caused by such removal and return the affected portion of the Premises to their condition existing prior to the installment of such Tenant Improvements; provided that, notwithstanding the foregoing, Tenant shall not be required remove any internal staircase connecting the Expansion Premises to other portions of the Premises, and/or replace any floor or grid removed in association with the installation of any staircase.

Tenant Improvement Allowance. Subject to any restrictions, conditions or limitations expressly set forth in this Tenant Work Letter or in the Lease or as otherwise expressly provided by mutual written agreement of Landlord and Tenant, the cost of construction of the Tenant Improvements shall be paid or reimbursed by Landlord up to a maximum amount as set forth in Section 5 of the Summary to the Lease (the "Tenant Improvement Allowance"), which amount is being made available by Landlord to be applied towards the Cost of Improvements for the construction of the Tenant Improvements in the Premises. Tenant shall be responsible, at its sole cost and expense, for payment of the entire Cost of Improvements of the Tenant Improvements in excess of the Tenant Improvement Allowance, including (but not limited to) any costs or cost increases incurred as a result of delays (unless caused by Landlord), governmental requirements or unanticipated conditions (unless caused by Landlord), and for payment of any and all costs and expenses relating to any alterations, additions, improvements, furniture, furnishings, equipment, fixtures and personal property items which are not eligible for application of Tenant Improvement Allowance funds under the restrictions expressly set forth below in this paragraph, but Tenant shall be entitled to use or apply the entire Tenant Improvement Allowance toward the Cost of Improvements of the Tenant Improvements (subject to any applicable restrictions, conditions, limitations, reductions or charges set forth in the Lease or in this Tenant Work Letter) prior to being required to expend any of Tenant’s own funds for the Tenant Improvements. The funding of the Tenant Improvement Allowance shall be made on a monthly basis or at other convenient intervals mutually approved by Landlord and Tenant and in all other respects shall be based on such commercially reasonable disbursement conditions and procedures as Landlord, Project Manager and Landlord’s lender (if any) may reasonably prescribe. Notwithstanding the foregoing provisions, under no circumstances shall the Tenant Improvement Allowance or any portion thereof be used or useable by Tenant for any moving or relocation expenses of Tenant, or for any Cost of Improvement (or any other cost or expense) associated with any moveable furniture or trade fixtures, personal property or any other item or element which, under the applicable provisions of the Lease, will not become Landlord’s property and remain with the Building upon expiration or termination of the Lease. Notwithstanding anything to the contrary herein, the Tenant Improvements shall not include (and Landlord shall be solely responsible for and the Tenant Improvement Allowance shall not be used for) the following: # costs incurred due to the presence of any Hazardous Materials in the Premises, if any; # costs to bring the Project into compliance with Applicable Laws to the extent required in order to allow Tenant to obtain a certificate of occupancy or its legal equivalent, for the Premises for the Permitted Use assuming a normal and customary office occupancy density; # construction costs in excess of the contract amount stated in the contract with the General Contractor, as approved by Tenant (not to be unreasonably withheld), except for increases set forth in change orders approved by Tenant; # wages, labor and overhead for overtime and premium time unless approved by Tenant (which approval shall not be unreasonably withheld, conditioned or delayed); # attorneys' fees incurred in connection with negotiation

Tenant Improvement Allowance. Subject to any restrictions, conditions or limitations expressly set forth in this Tenant Work Letter or in the Lease or as otherwise expressly provided by mutual written agreement of Landlord and Tenant, the cost of construction of the Tenant Improvements shall be paid or reimbursed by Landlord up to a maximum amount as set forth in Section 5 of the Summary to the Lease (the "Tenant Improvement Allowance"), which amount is being made available by Landlord to be applied towards the Cost of Improvements for the construction of the Tenant Improvements in the Premises. Tenant shall be responsible, at its sole cost and expense, for payment of the entire Cost of Improvements of the Tenant Improvements in excess of the Tenant Improvement Allowance, including (but not limited to) any costs or cost increases incurred as a result of delays (unless caused by Landlord), governmental requirements or unanticipated conditions (unless caused by Landlord), and for payment of any and all costs and expenses relating to any alterations, additions, improvements, furniture, furnishings, equipment, fixtures and personal property items which are not eligible for application of Tenant Improvement Allowance funds under the restrictions expressly set forth below in this paragraph, but Tenant shall be entitled to use or apply the entire Tenant Improvement Allowance toward the Cost of Improvements of the Tenant Improvements (subject to any applicable restrictions, conditions, limitations, reductions or charges set forth in the Lease or in this Tenant Work Letter) prior to being required to expend any of Tenant’s own funds for the Tenant Improvements. The funding of the Tenant Improvement Allowance shall be made on a monthly basis or at other

Improvement Allowance. Tenant shall be entitled to a one-time improvement allowance (the "Improvement Allowance") in the amount of […​…] per rentable square foot of the Premises for the costs relating to the initial design and construction of the improvements which are permanently affixed to the Premises (the "Improvements"). In no event shall Landlord be obligated to make disbursements pursuant to this Work Letter in the event that Tenant fails to immediately pay any portion of the "Over-Allowance Amount," as defined in Section 4.2.1, nor shall Landlord be obligated to pay a total amount which exceeds the Improvement Allowance. Notwithstanding the foregoing or any contrary provision of this Lease, all Improvements shall be deemed Landlord's property under the terms of this Lease. Any unused portion of the Improvement Allowance remaining one (1) year after of the Lease Commencement Date (the "Allowance Deadline"), shall remain with Landlord and Tenant shall have no further right thereto.

Allowance. Tenant shall be entitled to an allowance (the “Tenant Improvement Allowance”) in an amount not to exceed $110.00 per square foot of Rentable Area of the Premises for the costs relating to the design, permitting and construction of Tenant’s improvements which will be permanently affixed to the Premises in accordance with this Workletter (the “Tenant Improvements”). In no event will Landlord be obligated to make disbursements pursuant to this Workletter in a total amount which exceeds the Tenant Improvement Allowance. Tenant agrees that it shall commence the Tenant Improvements promptly following the Commencement Date and diligently proceed to complete the same. Tenant must submit Payment Request Supporting Documentation (defined below) for such work in accordance with this Workletter no later than April 1, 2020, after which date Landlord’s obligation to fund such costs shall expire.

Tenant Improvement Allowance. Lessee shall be entitled to a one-time tenant improvement allowance in the amount of Two Hundred Thirty-Four Thousand Six Hundred and 00/100 Dollars ($234,600.00) for costs related to the design and construction of tenant improvements in the Premises (the “Tenant Improvement Allowance”) and Lessee shall specify the building address associated with use of the Tenant Improvement Allowance. The Tenant Improvement Allowance must be disbursed in accordance with the terms of this Section 11 no later than the last day of the eighteenth (18th) month following the Extended Term Commencement Date. The construction of all tenant improvements desired by Lessee and constructed with the use of the Tenant Improvement Allowance (“New Tenant Improvements”) shall be performed in accordance with the terms of this Section 11. Lessor shall work with Lessor’s architect and Lessee to develop plans and specifications (“Preliminary Plans”) for the New Tenant Improvements. Within ten (10) days of Lessee’s receipt of the Preliminary Plans for any New Tenant Improvements, Lessee shall provide Lessor with either its consent to the same or reasonably detailed objections thereto. If Lessee provides such objections, Lessor shall revise and re-submit the Preliminary Plans for the New Tenant Improvements and thereafter Lessee shall have five (5) days to consent or provide reasonably detailed objections to the same, and the process shall repeat until Lessee has consented to the Preliminary Plans for the New Tenant Improvements (“Final Plans”). If Lessee shall fail to respond within such five (5) day period, Lessor may send a second written request for approval. Lessee’s failure to respond within five (5) days of such second written request shall be deemed its approval of such Preliminary Plans. Lessor, at Lessee’s sole expense (subject to the Tenant Improvement Allowance), shall cause to be constructed New Tenant Improvements in accordance with the Final Plans. Lessee shall be liable for all fees and costs of the design and construction of any tenant improvements in excess of the Tenant Improvement Allowance (such difference referred to herein as the “Tenant Improvement Shortfall”). Notwithstanding the foregoing, the parties agree that Lessor’s disbursements of the Tenant Improvement Allowance shall be made pari passu with Lessee’s contribution of its own funds towards the costs of constructing the tenant improvements as such costs become due (i.e. in proportion of Tenant Improvement Shortfall payable by Lessee to the Tenant Improvement Allowance). Lessor shall disburse the Tenant Improvement Allowance directly to the applicable design professional, contractor, materialman or other laborer (“Contractor”) in connection with the construction of such tenant improvements upon receipt of paid invoices for work completed, conditional/unconditional lien releases, and other documentation reasonably required by Lessor. For the avoidance of doubt, Lessee may submit to Lessor reimbursement requests from the Tenant Improvement Allowance for work completed prior to the date of this Amendment, provided that # such work was completed by a Contractor approved by Lessor, and # Lessee delivers to Lessor receipt of paid invoices for work completed, conditional/unconditional lien releases, and other documentation reasonably required by Lessor. Lessee shall not be entitled to receive any cash payment or credit against Rent or otherwise for any portion of the Tenant Improvement Allowance which is not used to pay for the construction of the tenant improvements contemplated hereunder.