Landlord’s Consent to Alterations. Tenant may not make any improvements, alterations, additions or changes to the Premises (collectively, the “Alterations”) without first procuring the prior written consent of Landlord to such Alterations, which consent shall be requested by Tenant not less than fifteen (15) days prior to the commencement thereof, and which consent shall not be unreasonably withheld, conditioned or delayed by Landlord; provided, however, Landlord may withhold its consent in its sole and absolute discretion with respect to any Alterations which may adversely affect the structural components of the Building or the Systems and Equipment in more than a de minimis manner (e.g., the mere tying into Systems shall not be subject to the sole discretion standard) or which can be seen from outside the Building. Tenant shall pay # for Alterations performed by Tenant, Landlord’s reasonable third-party costs incurred in connection with reviewing such Alterations, and # for Alterations for which Tenant has engaged Landlord to supervise and Landlord’s contractors to perform, a supervision fee of two and one-half percent (2.5%) of the total cost of such Alteration (for the avoidance of doubt, the foregoing supervisory fee shall not be due or payable in connection with the Tenant Improvements and the Vivarium improvements and no supervisory fee shall be due or payable in connection with any capital improvements performed by Landlord). Notwithstanding the foregoing, no Landlord approval shall be required (provided advance notice shall be provided to Landlord) for # installation, removal or realignment of furniture systems not involving any modifications to the structure or connections (other than by ordinary plugs or jacks) to the Systems, # Alterations which could not reasonably be expected to affect the structural components of the Building or the Systems and Equipment and which cost less than $150,000 for any one (1) job and no more than $300,000 in the aggregate in any calendar year during the Lease Term (excluding any costs for painting, carpeting, and similar purely cosmetic work), # Alterations which do not require a building permit, and # merely cosmetic work (such as painting and carpeting). The construction of the initial improvements to the Premises shall be governed by the terms of the Tenant Work Letter and not the terms of this Article 8.

Landlord’s Consent to Alterations. Tenant may not make any improvements, alterations, additions or changes to the Premises or any mechanical, plumbing, HVAC facilities or other utility or Building systems pertaining to the Premises (collectively, the “Alterations”) without first procuring the prior written consent of Landlord to such Alterations, which consent shall be requested by Tenant not less than fifteen (15) business days prior to the commencement thereof. Landlord shall not unreasonably withhold, condition or delay its consent to any proposed nonstructural Alterations, provided that such Alterations # are not visible from the outside of the Building,

Landlord’s Consent to Alterations. Tenant may not make any improvements, alterations, additions or changes to the Premises or any mechanical, plumbing, HVAC facilities or other utility or Building Systems pertaining to the Premises (collectively, the “Alterations”) without first procuring the prior written consent of Landlord to such Alterations, which consent shall be requested by Tenant not less than fifteen (15) days prior to the commencement thereof. Landlord shall not unreasonably withhold, condition or delay its consent to any proposed nonstructural Alterations, provided that such Alterations # are not visible from the outside of any Building, # do not affect the use of or require access to any part of the Buildings other than the Premises, # do not do not violate any certificate of occupancy for the Buildings or any other permits or licenses relating to the Project, # do not adversely affect any service required to be furnished to Tenant or to any other tenant or occupant of the Buildings, # do not affect any Building Systems or Common Areas, # do not reduce the value or utility of either one of the Buildings, and # otherwise comply with the Rules and Regulations and this Article 8. Prior to commencing any Alterations affecting air distribution or disbursement from ventilation systems serving Tenant or the Building, including without limitation the installation of Tenant’s exhaust systems, Tenant shall provide Landlord with a third party report from a consultant, and in a form reasonably acceptable to Landlord, showing that such work will not adversely affect the ventilation systems or air quality of the Building (or of any other tenant in the Building) and shall, upon completion of such work, provide Landlord with a certification reasonably satisfactory to Landlord from such consultant confirming that no such adverse effects have resulted from such work. Notwithstanding the foregoing, Tenant shall be permitted to make Alterations following ten (10) business days’ notice to Landlord, but without Landlord's prior consent, to the extent that such Alterations # are cosmetic in nature (e.g., painting, carpeting and the like), # do not affect the Building Systems or Common Areas, # are not visible from the exterior of the Building, and # cost less than $50,000.00 for a particular job of work. The construction of the initial improvements to the Premises shall be governed by the terms of the Tenant Work Letter and not the terms of this Article 8.

Landlord’s Consent to Alterations. Tenant may not make any improvements, alterations, additions or changes to the Premises or any mechanical, plumbing, HVAC facilities or other utility or Building systems pertaining to the Premises (collectively, the “Alterations”) without first procuring the prior written consent of Landlord to such Alterations, which consent shall be requested by Tenant not less than fifteen (15) business days prior to the commencement thereof. Landlord shall not unreasonably withhold, condition or delay its consent to any proposed nonstructural Alterations, provided that such Alterations # are not visible from the outside of the Building, # do not affect the use of or require access to any part of the Building other than the Premises, # do not violate any certificate of occupancy for the Building or any other permits or licenses relating to the Project, # do not adversely affect any service required to be furnished to Tenant or to any other tenant or occupant of the Building, # do not affect any Building systems or Common Areas, # do not reduce the value or utility of the Building, and # otherwise comply with the Rules and Regulations and this Article 8.

Landlord’s Consent to Alterations. Tenant may not make any improvements, alterations, additions or changes to the Premises or any mechanical, plumbing or HVAC facilities or systems pertaining to the Premises (collectively, the “Alterations”) without first procuring the prior written consent of Landlord to such Alterations, which consent shall be requested by Tenant not less than ten (10) business days prior to the commencement thereof, and which consent shall not be unreasonably withheld, conditioned or delayed by Landlord, provided it shall be deemed reasonable for Landlord to withhold its consent to any Alteration which adversely affects the structural portions or the systems or equipment of the Building or is visible from the exterior of the Building. Notwithstanding the foregoing, Tenant shall be permitted to make non-structural Alterations following ten (10) business days’ notice to Landlord, but without Landlord’s prior consent, to the extent that such Alterations # do not materially affect the Building roof, systems or equipment, # are not visible from the exterior of the Building, and # cost less than fifty thousand and 00/100 ($50,000.00) per year.

Landlord's Consent to Alterations. Tenant may not make or cause the installation of any improvements, alterations, fixtures, additions or changes to the Premises or any mechanical, plumbing or HVAC facilities or systems pertaining to the Premises (collectively, the "Alterations") without first procuring the prior written consent of Landlord to such Alterations, which consent shall be requested by Tenant not less than 30 days prior to the commencement thereof, and which consent shall not be unreasonably withheld, conditioned or delayed by Landlord, provided it shall be deemed reasonable for Landlord to withhold its consent to any Alteration which adversely affects the structural portions or the systems or equipment of the Building or is visible from the exterior of the Building. Notwithstanding the foregoing, Tenant shall be permitted to make cosmetic Alterations following ten days’ notice to Landlord, but without Landlord's prior consent, to the extent that such Alterations do not # adversely affect the Building Systems or Building Structure, # affect the exterior appearance of the Building, # adversely affect the value of the Premises or Building, # require a building or construction permit, or # cost more than Fifty Thousand Dollars ($50,000.00) for a particular job of work.

Landlord's Consent to Alterations. Tenant may not make any improvements, alterations, additions or changes to the Premises or any mechanical, plumbing or HVAC facilities or systems pertaining to the Premises (collectively, the "Alterations") without first procuring the prior written consent of Landlord to such Alterations, which consent shall be requested by Tenant not less than thirty (30) days prior to the commencement

Landlord's Consent to Alterations. Tenant may not make any improvements, alterations, additions or changes to the Premises or any mechanical, plumbing or HVAC facilities or systems pertaining to the Premises (collectively, the "Alterations") without first procuring the prior written consent of Landlord to such Alterations, which consent shall be requested by Tenant not less than ten (10) business days prior to the commencement thereof, and which consent shall not be unreasonably withheld, conditioned or delayed by Landlord, provided it shall be deemed reasonable for Landlord to withhold its consent to any Alteration that adversely affects the structural portions or the systems or equipment of the Building or is visible from the exterior of the Building. Notwithstanding the foregoing, Tenant shall be permitted to make Alterations following ten (10) business days' notice to Landlord (as to Alterations costing more than $10,000 only), but without Landlord's prior consent, to the extent that such Alterations # do not affect the building systems or equipment (other than minor changes such as adding or relocating electrical outlets and thermostats), # are not visible from the exterior of the Building, and # cost less than $100,000.00 for a particular job of work. The construction of the Tenant Improvements to the Premises shall be governed by the terms of the Tenant Work Letter and not the terms of this Article 8.

Landlord's Consent to Alterations. Tenant may not make any improvements, alterations, additions or changes to the Premises or any mechanical, plumbing or HVAC facilities or systems pertaining to the Premises (collectively, the "Alterations") without first procuring the prior written consent of Landlord to such Alterations, which consent shall be requested by Tenant not less than ten (10) business days prior to the commencement thereof, and which consent shall not be unreasonably withheld by Landlord, provided it shall be deemed reasonable for Landlord to withhold its consent to any Alteration which adversely affects the structural portions or the systems or equipment of the Building or is visible from the exterior of the Building. Notwithstanding the foregoing, Tenant shall be permitted to make Alterations following ten (10) business days' notice to Landlord (as to Alterations costing more than $10,000 only), but without Landlord's prior consent, to the extent that such Alterations # do not affect the building systems or equipment (other than minor changes such as adding or relocating electrical outlets and thermostats), # are not visible from the exterior of the Building, and # cost less than $100,000.00 for a particular job of work. The construction of the Tenant Improvements to the Premises shall be governed by the terms of the Tenant Work Letter and not the terms of this Article 8.

Landlord's Consent to Alterations. Tenant may not make any improvements, alterations, additions or changes to the Premises or any mechanical, plumbing or HVAC facilities or systems pertaining to the Premises (collectively, the "Alterations") without first procuring the prior written consent of Landlord to such Alterations, which consent shall be requested by Tenant not less than ten (10) business days prior to the commencement thereof, and which consent shall not be unreasonably withheld by Landlord, provided it shall be deemed reasonable for Landlord to withhold its consent to any Alteration which adversely affects the structural portions or the systems or equipment of the Building or is visible from the exterior of the Building. Notwithstanding the foregoing, Tenant shall be permitted to make Alterations following ten (10) business days’ notice to Landlord (as to Alterations costing more than $10,000 only), but without Landlord's prior consent, to the extent that such Alterations # do not affect the building systems or equipment (other than minor changes such as adding or relocating electrical outlets and thermostats), # are not visible from the exterior of the Building, and # cost less than $50,000.00 for a particular job of work. The construction of the Tenant Improvements to the Premises shall be governed by the terms of the Tenant Work Letter and not the terms of this Article 8.