Document:

Exhibit 4.2

	 	 	 
	NUMBER	 	SHARES
	______C    	 	 

 

VICARIOUS SURGICAL
INC.

INCORPORATED UNDER
THE LAWS OF DELAWARE

CLASS B COMMON STOCK

SEE REVERSE FOR

CERTAIN DEFINITIONS

 

	This Certifies that	 	CUSIP 

is the owner of

 

FULLY PAID AND NON-ASSESSABLE SHARES
OF CLASS B COMMON STOCK OF THE PAR VALUE OF $0.0001 EACH OF

 

VICARIOUS SURGICAL
INC.

 

transferable on the
books of the Company in person or by duly authorized attorney upon surrender of this certificate properly endorsed.

The Company will be
forced to liquidate if it is unable to complete an initial business combination within the time period set forth in the Company’s
Certificate of Incorporation, as the same may be amended from time to time.

This certificate is
not valid unless countersigned by the Transfer Agent and registered by the Registrar.

Witness the facsimile
seal of the Company and the facsimile signatures of its duly authorized officers.

 

Dated:

 

	 	 	 	 	 
	CHAIRMAN	 	 	 	SECRETARY
	

    

     
	 	
     

     

     

     
	 	

    

     

 

     

     

    

 

The following abbreviations, when used in
the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws
or regulations:

 

	 	 	 	 	 	 	 	 	 	 	 
	TEN COM –	 	as tenants in common	 	    UNIF GIFT MIN ACT -_____ Custodian ______	 	 
	TEN ENT –	 	as tenants by the entireties	 	 	 	                    (Cust)                       (Minor)	 	 
	JT TEN –	 	as joint tenants with right of survivorship	 	                under Uniform Gifts to Minors	 	 
	 	 	and not as tenants in common	 	 	 	                        Act ___________	 	 
	 	 	 	 	 	 	                                     (State)	 	 

 

Additional abbreviations
may also be used though not in the above list.

 

Vicarious Surgical
Inc.

 

The Company will furnish without charge to
each shareholder who so requests the powers, designations, preferences, and relative, participating, optional, or other special rights
of each class of stock or series thereof of the Company and the qualifications, limitations, or restrictions of such preferences, and/or
rights. This certificate and the shares represented thereby are issued and shall be held subject to all the provisions of the Certificate
of Incorporation and all amendments thereto and resolutions of the Board of Directors (copies of which may be obtained from the secretary
of the Company), to all of which the holder of this certificate by acceptance hereof assents.

 

For value received, ___________________________
hereby sell, assign and transfer unto

 

PLEASE INSERT SOCIAL SECURITY OR OTHER

IDENTIFYING NUMBER OF
ASSIGNEE

 

	 	 	 	 	 
	
        

        

     
	 	 	 	 

 

 

(PLEASE PRINT OR TYPEWRITE
NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)

 

 

__________________________________________________________________________________________shares
of the capital stock represented by the within Certificate, and do hereby irrevocably constitute and appoint _________________________________________________________________________________________Attorney
to transfer the said stock on the books of the within named Company will full power of substitution in the premises.

 

	 	 	 	 	 	 	 
	Dated                                           	 	 	 	
 

	 	 	 	 	Notice:	 	The signature to this assignment must correspond with the name as written upon the face of the certificate in every particular, without alteration or enlargement or any change whatever.

 

Signature(s) Guaranteed:

 

______________________________________________________________________________

THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN
ELIGIBLE GUARANTOR INSTITUTION

(BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS
AND CREDIT UNIONS WITH

MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE
MEDALLION PROGRAM,

PURSUANT TO S.E.C. RULE 17Ad-15).

 

The holder(s) of this certificate shall be
entitled to receive a pro-rata portion of the funds from the trust account only in the event that (i) the Corporation is
forced to liquidate because it does not consummate an initial business combination within the period of time set forth in the Corporation’s
Amended and Restated Certificate of Incorporation, as the same may be amended from time to time (the “Charter”) or (ii) if
the holder seeks to convert his shares upon consummation of, or sell his shares in a tender offer in connection with, an initial business
combination or in connection with certain amendments to the Charter. In no other circumstances shall the holder(s) have any right or interest
of any kind in or to the trust account.Exhibit 10.12

 

 

 

 

 

 

 

 

 

 

 

 

78 FOURTH AVENUE

WALTHAM, MASSACHUSETTS

 

BUILDING LEASE

 

Tenant: Vicarious Surgical Inc.

Landlord: Fourth Avenue LLC

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

     

     

    

 

TABLE OF CONTENTS

 

	1.0 REFERENCE DATA	1
	 	 	 
	2.0 DESCRIPTION OF PREMISES	3
	 	2.1	Premises.	3
	 	2.2	Appurtenant rights.	3
	 	2.3	Reservations.	4
	 	 	 	 
	3.0 TERM OF LEASE; OPTION TO EXTEND TERM	4
	 	3.1	Term.	4
	 	3.2	Option to Extend.	4
	 	 	 	 
	4.0 TAKING OCCUPANCY	5
	 	4.1	Occupancy As Is.	5
	 	4.2	Delivery of Possession.	6
	 	4.3	Tenant Improvement Allowance and Construction.	6
	 	 	 	 
	5.0 USE OF PREMISES	8
	 	5.1	Permitted Use.	8
	 	5.2	Prohibited Uses.	8
	 	5.3	Licenses and Permits.	9
	 	 	 	 
	6.0 RENT	 	 	9
	 	6.1	Annual Base Rent.	9
	 	6.2	Security Deposit.	9
	 	6.3	Taxes.	12
	 	6.4	Absolute Net Lease.	13
	 	6.5	Intentionally Omitted.	14
	 	6.6	Late Payment Charge.	14
	 	6.7	Books and Records.	15
	 	 	 	 
	7.0 UTILITIES AND LANDLORD’S SERVICES	15
	 	7.1	Utilities.	15
	 	7.2	Intentionally omitted.	16
	 	7.3	Heat and Air Conditioning.	16
	 	7.4	Intentionally omitted.	19
	 	7.5	Intentionally omitted.	19
	 	7.6	Cleaning.	19
	 	7.7	Other Maintenance and Services.	19
	 	7.8	Landlord Reservations.	19
	 	 	 	 
	8.0 MAINTENANCE OF AND IMPROVEMENTS TO PREMISES	21
	 	8.1	Changes or Alterations by Landlord.	21
	 	8.2	Alterations and Improvements by Tenant.	22
	 	8.3	Tenant’s Contractors - Mechanics’ and Other Liens - Standard of Tenant’s Performance - Compliance with Laws.	22
	 	8.4	Fixtures, Equipment and Improvements - Removal by Tenant.	23
	 	8.5	Repairs by Tenant.	24
	 	8.6	Locks.	24
	 	8.7	Tenant’s Improvements and Condition of Premises at Termination.	24

 

    i

     

    

 

	9.0 INSURANCE, INDEMNIFICATION, EXONERATION AND EXCULPATION	25
	 	9.1	Tenant’s Insurance.	25
	 	9.2	Additional Insureds.	26
	 	9.3	Certificates of Insurance.	26
	 	9.4	Tenant’s Compliance.	27
	 	9.5	Indemnification.	27
	 	9.6	Property of Tenant.	28
	 	9.7	Landlord’s Liability.	28
	 	9.8	Waiver of Subrogation.	28
	 	9.9	Property Insurance.	28
	 	 	 	 
	10.0 ASSIGNMENT, MORTGAGING, SUBLETTING, ETC.	29
	 	 
	11.0 MISCELLANEOUS COVENANTS	33
	 	11.1 	Rules and Regulations.	33
	 	11.2 	Nuisance.	33
	 	11.3 	Access to Premises.	33
	 	11.4 	Accidents to Sanitary and other Systems.	34
	 	11.5 	Signs, Blinds and Drapes.	34
	 	11.6 	Estoppel Certificate.	34
	 	11.7 	Requirements of Law - Fines and Penalties.	35
	 	11.8 	Floor Loading.	35
	 	11.9 	Tenant’s Access.	35
	 	11.10 	Survival	35
	 	 	 	
	12.0 PARKING	35
	 	
	13.0 CASUALTY	36
	 	 
	14.0 CONDEMNATION - EMINENT DOMAIN	39
	 	 
	15.0 DEFAULT	40
	 	15.1 	Conditions of Limitation - Re-entry - Termination.	40
	 	15.2 	Damages - Termination.	40
	 	15.3 	Fees and Expenses.	42
	 	15.4 	Landlord’s Remedies Not Exclusive.	42
	 	15.5 	Grace Period.	42
	 	 	 	 
	16.0 ABANDONED PROPERTY	42
	 	 
	17.0 SUBORDINATION	43
	 	 
	18.0 QUIET ENJOYMENT	43
	 	 
	19.0 ENTIRE AGREEMENT - WAIVER - SURRENDER	43
	 	19.1 	Entire Agreement.	43
	 	19.2 	Waiver.	43
	 	19.3.	Surrender	44
	 	 	 	 
	20.0 INABILITY TO PERFORM - EXCULPATORY CLAUSE	44
	 	 
	21.0 LANDLORD’S CONSENT	44
	 	 
	22.0 Intentionally omitted.	44
	 	 	 	 
	23.0 BILLS AND NOTICES	44
	 	 
	24.0 HOLDOVER	45
	 	 
	25.0 NO OPTION	45
	 	 
	26.0 PARTIES BOUND - SEIZIN OF TITLE	45

 

    ii

     

    

 

	27.0 MISCELLANEOUS	46
	 	27.1	Separability.	46
	 	27.2	Independent Covenants.	46
	 	27.3	Captions.	46
	 	27.4	Landlord or Tenant.	46
	 	27.5	Broker.	46
	 	27.6	Governing Law.	46
	 	27.7	Assignment of Lease and/or Rents.	46
	 	27.8	Notice of Lease.	47
	EXHIBITS	
	 	A - Lease Plan	 
	 	B – Work Letter	 
	 	C - Rules and Regulations	 
	 	E – Tenant’s Removeable Equipment	 
	 	F – Suburban Mechanical Design Services Letter	 

 

    iii

     

    

 

LEASE AGREEMENT

 

THIS LEASE made this January 25,
2021 between Fourth Avenue LLC, a Massachusetts limited liability company with offices at One Gateway Center in Newton,
Massachusetts (“Landlord”), and Vicarious Surgical Inc., a Delaware corporation, with offices in Charlestown,
Massachusetts (“Tenant”).

 

In consideration of the rents and
the covenants to be paid and performed by Tenant and upon the terms and conditions of this Lease, Landlord hereby leases to Tenant
the Premises (as defined below) and as shown on the plan attached hereto as Exhibit A and made a part hereof.

 

		1.0	REFERENCE DATA

 

Each reference in this Lease to any term defined in
this Article shall be deemed and construed to incorporate the data stated following that term in this Article.

 

		Additional Rent:	Sums
or other charges payable by Tenant to Landlord under this Lease, other than Annual Base Rent.

 

Annual Base Rent:

 

	Period:	Annual
    Base Rent:	Monthly
                                            Installment 

                                            of Annual Base

    Rent:

	April
    1, 2021 through March 31, 2022	$725,004.00	$60,417.00
	April
    1, 2022 through March 31, 2023	$1,050,000.00	$87,500.00
	April
    1, 2023 through March 31, 2024	$1,302,000.00	$108,500.00
	April
    1, 2024 through March 31, 2025	$1,344,000.00	$112,000.00
	April
    1, 2025 through March 31, 2026	$1,386,000.00	$115,500.00
	April
    1, 2026 through March 31, 2027	$1,428,000.00	$119,000.00
	April
    1, 2027 through March 31, 2028	$1,470,000.00	$122,500.00
	April
    1, 2028 through February 28, 2029	$1,512,000.00	$126,000.00

 

	Broker:	CBRE
    | New England and Lincoln Property Company
	 	
	Building:	Landlord’s
    single-story building consisting of approximately 42,000 square feet of rentable area, commonly referred to as 78 Fourth Avenue in
    Waltham, Massachusetts.
	 	 
	Business
    Day:	All
    days except Saturdays, Sundays and days defined as “legal holidays” by the Commonwealth of Massachusetts.
	 	 
	Land:	The
    parcel(s) of land owned by Landlord upon which the Building is situated (the “Primary Parcel(s)”) and the parcel(s) of
    land owned by Landlord appurtenant to the Primary Parcel(s) which such appurtenant parcel(s) existing primarily for the benefit of
    or as part of the Primary Parcel(s).

 

    

    Page 2

    

 

	Lease Year:	A twelve (12) month period beginning on
    the Term Commencement Date or any anniversary thereof.
	 	
	Landlord’s Address:	c/o J. F. White Properties LLC
	 	ONE GATEWAY CENTER STE 500
	 	NEWTON MA 02458
	 	 
	Mortgage:	A mortgage, deed of trust, trust indenture, or other security instrument of record creating an interest in or affecting title to the Property or any part thereof, and any renewal, modification, consolidation or extension of any such instrument.
	 	 
	Mortgagee:	The holder of any Mortgage.
	 	 
	Option Annual Base Rent:	Fair market rental value for the Premises determined in accordance with Section 3.2, “Option to Extend.”.
	 	 
	Option Notice Date:	December 1, 2027
	 	 
	Option Term:	A period of time commencing on the First Option Term Commencement Date and ending on the First Option Term Expiration Date.
	 	 
	Option Term Commencement Date:	March 1, 2029
	 	 
	Option Term Expiration Date:	February 28, 2034
	 	 
	Parking Areas:	Those areas on the Property designated as of the date of this Lease by Landlord to be used for parking automobiles. The areas on the Property designated as of the date of this Lease by Landlord to be used for parking automobiles are shown on Exhibit A, “LEASE PLAN”.
	 	 
	Premises:	Approximately 42,000 square feet of rentable area on the ground floor of the Building as more fully described in the Article of this Lease entitled “DESCRIPTION OF PREMISES”. The Premises includes the entire ground floor of the Building, including, without limitation any loading docks and all other entry and exit ways.
	 	 
	Property:	The Building and the Land and any improvements on the Land.
	 	 
	Rent:	Annual Base Rent and Additional Rent.
	 	 
	Security Deposit:	$504,000.00

    

    Page 3

    

 

	Tenant’s Address:	Until the Term Commencement Date
	 	 
	 	56 ROLAND ST STE 2R

                                                       

                                                      CHARLESTOWN MA 02126;

	 	 
	 	and thereafter the Premises, with a copy to:
	 	 
	 	Adam Sachs
	 	 
	 	Sammy Khalifa
	 	 
	 	Scott LeBlanc
	 	 
	 	William Morris

 

	Tenant’s
    Proportionate Share of Real Estate Taxes:	100%
		 
	Term
    Commencement Date:	April
    1, 2021
	 	 
	Term
    Expiration Date:	February
    28, 2029
	 	 
	Term:	A period
    of time commencing on the Term Commencement Date and ending on the Term Expiration Date.
	 	 
	Use
    of the Premises:	General
    office and medical device related research and development (including wet and dry laboratory).

 

		2.0	DESCRIPTION OF PREMISES

 

		2.1.	Premises. The premises leased by Tenant under
this Lease shall be the Premises as described in Article 1.0 above, “REFERENCE DATA”, subject to Landlord’s
reservations set forth elsewhere in this Lease, including, without limitation, Section 7.8, “Landlord Reservations.”,
Section 8.1, “Changes or Alterations by Landlord.” and Section 11.3, “Access to Premises.”.

 

		2.2.	Appurtenant Rights. Tenant shall have, as appurtenant
to the Premises, the right to use the Parking Areas and those roadways and walkways which are both on the Property and necessary for
access to the Premises. Such right of Tenant to the Parking Areas and such roadways and walkways shall be exclusively Tenant’s
right, subject however to the terms and conditions of this Lease, including, without limitation, the condition that such rights shall
be subject to such rules and regulations as may be made by Landlord from time to time as provided for in Section 11.1 of this Lease,
“Rules and Regulations.”, and, with respect to use of the Parking Areas and such roadways and walkways, Tenant
acknowledges and confirms that Tenant shall have no right to use any exterior portion of the Property for any purpose other than for
(i) pedestrian access to the Premises in conjunction with Tenant’s use of the Premises for the permitted Use of the Premises, (ii)
parking and unparking passenger vehicles used by Tenant (and Tenant’s agents, contractors or employees acting with respect to Tenant
within the scope of their agency, contract or employment) and Tenant’s invitees and licensees in conjunction with Tenant’s
use of the Premises for the permitted Use of the Premises and (iii) truck access in conjunction with moving in and out of the Premises and pickups and deliveries
in conjunction with Tenant’s use of the Premises for the permitted Use of the Premises. Notwithstanding the definition of the “Premises”
but subject to all other applicable terms and conditions of this Lease, Tenant shall have the right to access the roof and other areas
of the Building and the Property as reasonably required to perform Tenant’s obligations under this Lease. Notwithstanding anything
to the contrary elsewhere in this this Lease except as expressly otherwise set forth in Section 27.9 of this Lease, “Tenant’s
Antenna”, Tenant shall have no right to use the roof of the Building for any purpose other than the placement of mechanical
equipment directly related to Tenant’s use of the Premises for the permitted Use of the Premises, the installation, use, maintenance
and removal of which such mechanical equipment shall be subject in all respects to the terms and conditions of this Lease.

    

    Page 4

    

  

		2.3.	Reservations. Intentionally omitted.

 

		3.0	TERM OF LEASE; OPTION TO EXTEND TERM

 

		3.1.	Term. The term of this Lease shall be for the
Term (or until such Term shall sooner cease or expire) commencing on the Term Commencement Date and ending on the Term Expiration Date.

 

		3.2.	Option to Extend. So long as this Lease is
in full force and effect and Tenant is not in default and has not at any time been in default under this Lease beyond any applicable
notice and cure period and no condition exists which with the passage of time or giving of notice would constitute a default under this
Lease and provided this Lease has not been assigned (except in the case of a Permitted Transfer) and no portion of the Premises has been
sublet (except in the case of a Permitted Transfer and except in the case of a sublease that has expired or will expire prior to the
Option Term Commencement Date), (i) Tenant may extend the Term of this Lease for the period of the Option Term by giving notice to Landlord
(“Tenant’s Option Exercise Notice”) on or before the Option Notice Date. The terms and conditions applicable
to such Option Term shall be the same as set forth in this Lease except that Tenant shall have no further right to extend the Term of
this Lease and the Annual Base Rent payable by Tenant with respect to the Option Term shall be the Option Annual Base Rent, but in no
event less than the Annual Base Rent immediately prior to the start of the Option Term.

 

Following the timely delivery of Tenant’s Option Exercise
Notice, Landlord shall provide Tenant with notice of Landlord’s determination of the Option Annual Base Rent (“Landlord’s
Determination”). Unless Tenant provides a notice of objection (the “Objection”) to Landlord within thirty (30) days
of the delivery of Landlord’s Determination, Landlord’s Determination shall be the Option Annual Base Rent. If Tenant does
timely provide the Objection, and if Landlord and Tenant have not agreed to the Option Annual Base Rent in writing within one (l) month
following the delivery of the Objection, the Option Annual Base Rent shall be determined by appraisers, one to be chosen by Landlord,
one to be chosen by Tenant, and a third to be selected by the two first chosen. All appraisers chosen or selected hereunder shall be independent
of the parties, shall have received the M.A.I. (Member, Appraisal Institute) designation from the American Institute of Real Estate Appraisers
and shall have had at least five (5) years of experience in appraising commercial office and research and development space comparable
to the Premises and in the Greater Boston and Waltham/Route 128 areas. The unanimous written decision of the two first chosen, without
selection and participation of a third appraiser, or otherwise the written decision of a majority of three appraisers chosen and selected
as aforesaid, shall be conclusive and binding upon Landlord and Tenant. Landlord and Tenant shall each notify the other of its appraiser
within thirty (30) days following expiration of the aforesaid one (l) month objection period and, unless such two appraisers shall have
reached a unanimous decision within seventy-five (75) days from said expiration, they shall within a further fifteen (15) days elect a
third appraiser and notify Landlord and Tenant thereof. The third appraiser shall deliver to Landlord and Tenant the written decision
of the majority of them within 30 days of the selection of the third appraiser. Landlord and Tenant shall each bear the expense of the
appraiser chosen by it and shall equally bear the expense of the third appraiser (if any).

    

    Page 5

    

 

If, as contemplated by this Section, the Option Annual
Base Rent shall not have been determined before the Option Term Commencement Date, the Option Term may commence and from and after
the Option Term Commencement Date, until the Option Annual Base Rent is so determined either by agreement of the parties or by
appraisal, Tenant shall make payments towards such Option Annual Base Rent at the rate as set forth in Landlord’s
Determination, subject to retroactive adjustment in conformity with and payment of any additional amount within fifteen (15) days of
the determination of the Option Annual Base Rent pursuant to this Section. In no event shall the provisions of this Section be
deemed to authorize an Option Annual Base Rent less than the Annual Base Rent immediately prior to the start of the Option Term.

 

If Tenant exercises its option to extend this Lease,
the phrase Annual Base Rent as used in this Lease shall mean the Option Annual Base Rent during the Option Term and the word Term as used
in this Lease shall mean the combined terms of the Term and the Option Term.

 

Notwithstanding anything to the contrary above in this Section,
simultaneous with Tenant’s Option Exercise Notice, Tenant shall provide Landlord with a balance sheet as of the last day of the
most recently completed fiscal quarter and a similarly current statement of Tenant’s income and expenses for the twelve months preceding
the date of the aforementioned balance sheet, both of which shall be prepared in reasonable detail in accordance with generally accepted
accounting principles and certified as being true, accurate and complete by an officer or principal of Tenant. In addition to such balance
sheet and income and expense statement, Tenant shall provide such other financial and business plan and related information as Landlord
shall reasonably request, including without limitation, information related to the capitalization of Tenant’s business and a cash flow
projection through the end of the Option Term. Landlord shall have 30 days from Landlord’s receipt of such balance sheet and income
and expense statement and any other requested information to review such balance sheet, income and expense statement and other requested
information. In the event the information provided by Tenant reasonably interpreted does not indicate a commercially reasonable expectation
that Tenant will have sufficient cash to sustain Tenant’s business and fulfill Tenant’s obligations under this Lease during
the Option Term, Landlord shall notify Tenant within 30 days from Landlord’s receipt of such balance sheet and income and expense
statement and any other requested information that the Option Term shall not commence and, notwithstanding Tenant’s Option Exercise
Notice, the Option Term shall not commence and the Term shall expire on the originally scheduled Term Expiration Date, and Tenant shall
have no further right to extend the Term. Landlord’s confidentiality obligations pertaining to financial and other information provided
by Tenant to Landlord pursuant to Section 6.7, “Books and Records.”, shall apply with respect to financial and
other information provided to Landlord pursuant to this grammatical paragraph.

 

		4.0	TAKING OCCUPANCY

 

		4.1.	Occupancy As Is. Tenant acknowledges and affirms
that Tenant has inspected or has had the opportunity to inspect the Premises and is satisfied in all respects thereto. Tenant shall accept
the Premises vacant, in broom clean condition and otherwise “as is”. Tenant shall be deemed to occupy the Premises on and
as of the Term Commencement Date. Except if and only to the extent specifically provided otherwise pursuant to this Lease, Landlord shall
not be required to make any repairs or improvements or perform any other work whatsoever to deliver possession of the Premises to Tenant
or as a condition of Tenant’s acceptance of the Premises “as-is”.

 

Notwithstanding Tenant’s acceptance of the Premises
“as-is” otherwise, Landlord specifically agrees to (i) perform the HVAC repairs itemized in the Suburban Mechanical Design
Services letter to Wayne Smith at J. F. White Properties, which letter is dated December 21, 2020 attached hereto as Exhibit F, “SUBURBAN
MECHANICAL DESIGN SERVICES LETTER”, and (ii), provided any cracked exterior window glass existing as of the Term Commencement Date
is not the result of any act or omission of Tenant or any person or entity claiming by, through or under Tenant, replace any cracked exterior
window glass existing as of the Term Commencement Date.

 

    

    Page 6

    

 

		4.2.	Delivery of Possession. If Landlord is delayed
in Landlord’s ability to deliver possession of all or any portion of the Premises to Tenant as otherwise required herein whether because
of strikes, labor difficulties, difficulties in obtaining materials, fire, governmental regulations, or any other circumstances beyond
Landlord’s reasonable control (including, without limitation, the failure of existing tenants to vacate), then such delay shall not constitute
a breach or default on the part of Landlord under this Lease or give rise to any claims of damage or expenses of any kind against Landlord
by Tenant, either direct or consequential; provided that if Landlord is unable to deliver possession of the entire Premises by the Term
Commencement Date, then Tenant’s sole and exclusive remedy at law and in equity shall be that the Term Commencement Date, the Term Expiration
Date, the Option Notice Date, the Option Term and schedule of Annual Base Rent shall be adjusted to reflect any such delay.

 

Tenant acknowledges that an existing tenant (the “Existing
Tenant”) occupies the Premises as of the date of this Lease. Landlord has informed Tenant that Existing Tenant’s lease
presently expires with respect to the Premises on January 31, 2021. Landlord agrees to use commercially reasonable efforts to cause Existing
Tenant to vacate the Premises by January 31, 2021.

 

		4.3.	Tenant Improvement Allowance and Construction.

 

Landlord shall Substantially Complete the Initial Tenant
Improvements (as defined below) in accordance with the work letter attached hereto as Exhibit B (the “Work”). Exhibit
B is hereinafter referred to as the “Work Letter”. “Substantially Complete” shall mean that Landlord
has completed the Work except to the extent there remain to be done in the Premises only so-called punch list items such as minor details
of construction and minor mechanical adjustments and such other items which do not materially adversely interfere with Tenant’s use of
or access to the Premises for the permitted use of the Premises. Landlord shall work with reasonable diligence to Substantially Complete
the Work by June 30, 2021 (the “Target Completion Date”).

 

If and to the extent Tenant then occupies the Premises,
to the extent the Work requires Landlord to perform construction or other activities in the Premises, Tenant agrees that, without Rent
abatement or other penalty, Landlord may perform construction and or other activities in the Premises while Tenant continues to use and
occupy the Premises. Tenant acknowledges that the Work by its nature may from time to time preclude Tenant from using certain portions
of the Premises, which portions may from time to time include, without limitation, cubical areas, office areas, conference rooms, kitchen
and storage areas and circulation spaces as applicable. In addition, Tenant, at Tenant’s expense, agrees to cooperate and coordinate
with Landlord during the Work, including, without limitation, moving and or storing, temporarily or permanently, Tenant’s personal property,
furniture, fixtures or equipment as may be required to facilitate the Work. Tenant specifically agrees that, notwithstanding Landlord’s
obligation to complete the Work, under no circumstances shall Landlord be obligated to move or store, temporarily or permanently, Tenant’s
personal property, furniture, fixtures or equipment and if such moving or storage is required in order for Landlord to perform the Work,
such moving and storage shall be at Tenant’s sole cost and expense. Landlord agrees to (i) be commercially reasonable with respect
to the cooperation and coordination required of Tenant related to the Work and, (ii) subject to Tenant’s commercially reasonable
cooperation and coordination, use commercially reasonable efforts to minimize disruption to Tenant’s access to and use of the Premises
for the permitted Use of the Premises.

 

If the Work is not
Substantially Complete by the Target Completion Date as a result of (i) delays caused by Tenant (“Tenant
Delays”), including, without limitation, Tenant requested changes to the scope of work, design, finishes or other
specifications set forth in the Work Letter or Tenant’s failure to respond in a timely manner to Landlord’s inquires
related to the Work or Tenant’s failure to timely cooperate and coordinate as required pursuant to the immediately preceding
grammatical paragraph or (ii) force majeure delays (“Force Majeure Delays”), including, without limitation,
delays relating to strikes, labor difficulties, difficulties in obtaining materials, fire, governmental regulations, the failure of
existing tenants to vacate and or any other circumstances beyond Landlord’s reasonable control, then the Target Completion Date
shall be postponed equitably reflecting all such delays.

 

    

    Page 7

    

 

“Initial Tenant Improvements” shall be
deemed to mean such alterations and improvements in the Premises as may be approved and constructed by Landlord as part of preparation
of the Premises for Tenant’s occupancy as contemplated in the Work Letter.

 

“Soft Costs” shall be deemed to mean costs
incurred to design, specify and obtain building permits or other regulatory authorizations relating to the Initial Tenant Improvements,
including, without limitation, fees paid to architectural and engineering professionals, and preparation of construction drawings, contracts
and other documents relating to the Initial Tenant Improvements.

 

“Hard Costs” shall be deemed to mean amounts
other than Soft Costs incurred to construct the Initial Tenant Improvements, including without limitation, reasonable construction management
fees and supervision costs and the cost of Building personnel to the extent such costs relate to the construction of the Initial Tenant
Improvements.

 

“Eligible Alteration and Improvement Costs”
shall be deemed to include Hard Costs and Soft Costs paid by Tenant to Landlord with respect to the Initial Tenant Improvements. All costs
included in “Eligible Alteration and Improvement Costs” shall be bona fide, commercially reasonable and reflective of the
submarket within which the Building is located as applicable with respect to such costs. “Eligible Alteration and Improvement Costs”
shall, without intended limitation, specifically NOT include costs relating to the installation of or modifications to Tenant’s
furniture, fixtures, equipment or Tenant’s phone, data or access systems.

 

“Tenant’s Allowance” shall be a
credit in Tenant’s favor in the amount of up to $840,000.00 to be applied against Eligible Alteration and Improvement Costs otherwise
payable to Landlord; provided however in no event shall Tenant’s Allowance exceed the total amount of Eligible Alteration and Improvement
Costs

 

Net of the application of Tenant’s Allowance, Tenant
shall reimburse to Landlord as Additional Rent, all costs relating to the Initial Tenant Improvements (which costs may include, without
limitation, in addition to direct labor and materials costs, construction, project management and supervisory costs and, consistent with
past practices between Landlord and Tenant, an allocation for overhead and profit). Such reimbursement to Landlord shall be paid as follows.
Soft Costs shall be due and payable as incurred. A deposit equal to 50% of the known and anticipated Hard Costs in excess of the Tenant’s
Allowance (the “Excess Hard Costs”) shall be due and payable prior to commencement of the Initial Tenant Improvements
with the balance of Excess Hard Costs due and payable within 20 days from the day the Initial Tenant Improvements are Substantially Complete
and Landlord has notified Tenant of such completion. The cost of any additional Hard Costs incurred during the course of the Initial Tenant
Improvements shall be similarly paid as they occur, e.g. a similar 50% deposit in advance and the balance upon completion and notice.
Provided Tenant is not then in default of the Lease and no condition exists which, with the passage of time or the giving of notice would
constitute a default under the Lease, upon Substantial Completion, Landlord shall apply Tenant’s Allowance against costs relating
to the Initial Tenant Improvements due Landlord following Substantial Completion of the Initial Tenant Improvements.

 

Nothing in this Section shall be
deemed to obligate Landlord to (i) consent to any particular alterations or improvements or to approve any particular contractor,
supplier, vendor or other service provider acting on Tenant’s behalf with respect to the Initial Tenant Improvements or (ii),
in the event Eligible Alteration and Improvement Costs are less than Tenant’s Allowance, provide Tenant any offset against
Rent or other such concession.

 

    

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		5.0	USE OF PREMISES

 

		5.1.	Permitted Use. During the Term of this Lease
Tenant shall use the Premises for the permitted Use of the Premises and for no other purpose. Service and utility areas (whether or not
a part of the Premises) shall be used only for the particular purpose for which they are designated.

 

		5.2.	Prohibited Uses. Tenant shall not use, permit
the use of, permit anything to be done in or on or anything to be brought into or onto or kept in or on the Premises, the Building, the
Property or any part of thereof (i) which would violate any covenant, agreement, term, provision or condition of this Lease, (ii) for
any unlawful purpose or in any unlawful manner, or (iii) which, in the reasonable judgment of Landlord shall in any way (a) impair or
tend to impair the appearance or reputation of the Building or the Property, (b) impair or interfere with or tend to impair or interfere
with any of the Building or Property services or the proper and economic heating, cleaning, air conditioning or other servicing of the
Building or the Property or any portion thereof or with the use of the Building or the Property or any portion thereof, or (c) occasion
unreasonable discomfort, inconvenience or annoyance to any tenant, licensee or other occupant of any neighboring property, whether through
the transmission of noise or odors or vibrations or otherwise. Notwithstanding anything above in this paragraph to the contrary, if and
to the extent this paragraph provides for Landlord to exercise “reasonable judgment”, provided and to the extent Tenant’s
use of the Premises is for the Permitted Use of the Premises only and otherwise in all respects in compliance with all applicable terms
and conditions of this Lease, (A) Landlord agrees not to find that the permitted Use of the Premises in and of itself (x) impairs or
tends to impair the appearance or reputation of the Building or the Property, (y) impairs or interferes with or tends to impair or interfere
with any of the Building or Property services or the proper and economic heating, cleaning, air conditioning or other servicing of the
Building or the Property or any portion thereof or with the use of the Building or the Property or any portion thereof; provided however
that such limitation on Landlord’s “reasonable judgment” shall not apply with respect to Tenant’s acts or omissions
outside the Premises, including, without limitation, Tenant’s acts or omissions in the Parking Areas, on the roof of the Building
or elsewhere on the Property other than inside the Building and not visible from outside the Building; and (B), with respect to (c) above
in this grammatical paragraph, in the event of a bona fide complaint from any tenant, licensee or other occupant of any neighboring property
(a “Complaining Neighbor”), without diminishing Landlord’s ability to otherwise exercise “reasonable judgement”
in requiring Tenant not to “occasion unreasonable discomfort, inconvenience or annoyance to any tenant, licensee or other occupant
of any neighboring property, whether through the transmission of noise or odors or vibrations or otherwise”, Landlord agrees that
Landlord shall not seize upon a de minimis and or unreasonable complaint of a Complaining Neighbor to disproportionately further a Landlord
agenda to seek termination of the Term sooner than the Term Expiration Date.

 

No outside storage of any sort shall be permitted at
any time without the consent of Landlord obtained in advance in each instance. In the event Landlord grants Landlord’s consent with
respect to outside storage (which Landlord, in Landlord’s discretion, may or may not grant or may condition), among other conditions,
Landlord may condition Landlord’s consent upon Tenant, at Tenant’s expense, providing reasonable screening acceptable to Landlord.
Tenant shall not bring or permit to be brought into or keep in or on the Premises, the Building or elsewhere on the Property any “Hazardous
Materials”, which shall be defined as oil or any toxic, hazardous, inflammable, combustible or explosive fluids, materials, chemicals
or substances, (including without limitation any hazardous substances within the meaning of Chapter 21E of the Massachusetts General Laws
and any medical waste or any fluid, material, chemical or substance considered to be biologically hazardous) (except in the Premises where
such are related to Tenant’s use of the Premises for the permitted Use of the Premises and then only provided the same are stored and
handled in a proper fashion consistent with applicable legal standards and industry best practices), or cause or permit any odors to emanate
from the Premises or any other portion of the Property.

    

    Page 9

    

  

The Property shall be maintained in a sanitary condition,
and kept free of rodents and vermin. Tenant shall suitably store all trash and rubbish in the Building or elsewhere on the Property in
locations designated by Landlord from time to time.

 

		5.3.	Licenses and Permits. If any governmental license
or permit shall be required for the proper and lawful conduct of Tenant’s business (including without limitation, the storage of liquids
or gases, flammable or otherwise, if, as and to the extent may be permitted with Landlord’s consent as contemplated in Section
5.2 (“Prohibited Uses.”), Tenant, at Tenant’s expense, shall duly procure and maintain such license or permit
and upon request of Landlord from time to time provide copies of same to Landlord. Tenant, at Tenant’s expense, shall at all times comply
with the terms and conditions of each such license or permit.

 

		6.0	RENT

 

		6.1.	Annual Base Rent. Tenant shall pay to Landlord,
without any demand, setoff or deduction, at Landlord’s Address, or to such other person or at such other place as Landlord may designate
by notice to Tenant, the Annual Base Rent. The Annual Base Rent shall be paid in equal Monthly Installments in advance on or before the
first Business Day of each calendar month during the Term of this Lease and shall be apportioned for any fraction of a month in which
the Term Commencement Date or the last day of the Term of this Lease may fall. Rent for the first full month of the initial Term for
which Rent is due shall be paid by Tenant upon the execution of this Lease. Notwithstanding anything to the contrary contained in this
Lease, as an inducement for Tenant to enter into this Lease, for so long as Tenant is not in default of this Lease and no condition known
to Tenant or Landlord then exists which with the passage of time or the giving of notice would constitute a default under this Lease,
Tenant shall be relieved of Tenant’s obligation to pay Annual Base Rent for the first full six months of the Term.

 

		6.2.	Security Deposit. As security for the faithful
performance and observance by Tenant of the terms, conditions, provisions and covenants of this Lease, simultaneous with execution of
this Lease, Tenant shall provide a letter of credit for the sum of the Security Deposit as described below.

 

Tenant acknowledges and agrees that in no event shall
the Security Deposit be considered prepaid Rent.

 

The Security Deposit shall be in the form of a clean
irrevocable letter of credit from an Approved Financial Institution (as described below in this paragraph) in the amount set forth in
Article 1.0, “REFERENCE DATA”, for the defined term “Security Deposit:”. The letter of credit and
any replacement thereof shall be in a form satisfactory to Landlord, shall be for a minimum of one year and thereafter renew automatically
as set forth below and shall include a right of assignment to any successor to Landlord’s interests hereunder. Such letter of credit,
and any replacement thereof, shall be drawn on Silicon Valley Bank, Bank of America or other such reputable financial institution qualified
to do business in and having an office in Massachusetts and approved by Landlord (an “Approved Financial Institution”).

 

    

    Page 10

    

 

In the event of a material
adverse change in the financial position of any Approved Financial Institution on which any then-outstanding letter of credit is
drawn, Landlord reserves the right to require Tenant to replace the then-outstanding letter of credit with a like letter of credit
from another Approved Financial Institution within 10 Business Days of notice from Landlord to Tenant exercising such right of
Landlord. If the Approved Financial Institution on which any then-outstanding letter of credit is drawn is declared insolvent or
placed into conservatorship or receivership, Tenant shall immediately notify Landlord and, within 10 Business Days of such
declaration of insolvency or placement into conservatorship or receivership, replace the then-outstanding letter of credit with a
like letter of credit from another Approved Financial Institution; provided however that in the event Tenant has not within such 10
Business Days replaced the then-outstanding letter of credit with a like letter of credit from another Approved Financial
Institution, Tenant shall have deposited cash with Landlord in the amount of the Security Deposit and Landlord shall have the right
but not the obligation to obtain a letter of credit in Tenant’s name and on Tenant’s behalf as contemplated in the last
sentence of this grammatical paragraph, including, without limitation, Landlord’s right to collect from Tenant reimbursement
of Landlord’s expenses. The original letter of credit and all replacements thereof shall contain a clause whereby the issuing
Approved Financial Institution agrees to automatically extend the term of the applicable letter of credit for one year periods
throughout the Term and for a period of ninety (90) days after the expiration of the Term, unless, not less than sixty (60) days
prior to the date on which the applicable letter of credit would expire absent such extension, Landlord receives notice of
non-extension from the issuing Approved Financial Institution by FedEx, UPS or other such nationally known reputable overnight
courier service. In the event of any such notice of non-extension, Tenant shall, not later than thirty (30) days prior to the date
on which the then-outstanding letter shall expire, replace the then-outstanding letter of credit with a like letter of credit from
another Approved Financial Institution. In any event Tenant fails to replace any letter of credit as contemplated in this Section,
Landlord may do so in Tenant’s name and on Tenant’s behalf, and Tenant shall, within 10 Business Days after written notice
from Landlord, reimburse Landlord, as Additional Rent, for all of Landlord’s expenses incurred in doing so, including, without
limitation, Landlord’s reasonable legal, professional, administrative, managerial expenses and all other expenses related to
enforcing Landlord’s rights hereunder and or obtaining any such replacement letter of credit.

  

Upon the occurrence of any
default of Tenant, and the passage of any notice and cure periods without a full cure of such default, including, without
limitation, Tenant’s failure to replace any letter of credit as contemplated in this Section (provided that, notwithstanding
anything to the contrary elsewhere in this Lease, with respect to any failure of Tenant to replace any letter of credit there shall
be no notice or cure period), Landlord may, at Landlord’s election, draw the full amount or any part of any then-outstanding
letter of credit, and hold, use and apply the proceeds thereof as provided for in this Section. Landlord may elect to use such
proceeds (or any excess proceeds after application) to obtain from another Approved Financial Institution a replacement letter of
credit in Tenant’s name and on Tenant’s behalf and in such event Tenant shall, within 10 Business Days after written notice
from Landlord, reimburse Landlord, as Additional Rent, for all of Landlord’s expenses (as provided for in the immediately
preceding paragraph) incurred in enforcing Landlord’s rights hereunder and or in obtaining such replacement letter of credit.
From and after the time Landlord shall have drawn all or any portion of the proceeds of any letter of credit, if and to the extent
Landlord elects not to obtain a replacement letter of credit, Landlord shall have the right from time to time, without prejudice to
any other right or remedy available to Landlord, to apply such proceeds, or any part thereof, to any default in the payment of Rent
or any other sum as to which Tenant is in default under this Lease or for any sum which Landlord may expend or may be required to
expend by reason of Tenant’s default with respect to this Lease or to any other damages incurred by Landlord arising from or related
to any then existing or subsequently occurring default of Tenant, including, without limitation, any amount for which Tenant is
liable under the Article contained herein entitled “DEFAULT”. In lieu of obtaining a replacement letter of credit,
Landlord may hold the proceeds of the letter of credit as a cash Security Deposit in which event Landlord shall have the same rights
and remedies with respect to the cash Security Deposit as Landlord shall have with respect to any letter of credit contemplated
under this Lease. In no event shall Tenant be entitled to any interest on the proceeds of any letter of credit drawn upon by
Landlord nor shall such proceeds be deemed prepaid Rent. In no event shall the proceeds of any letter of credit drawn upon by
Landlord be construed as liquidated damages for any default or breach of any term, condition, provision and covenant of this Lease
nor shall Landlord be required, because of such proceeds, to waive any right of Landlord to terminate this Lease as provided for
under the Article contained herein entitled “DEFAULT”. In the event Landlord uses, applies or retains any part or all of
the proceeds of any letter of credit drawn upon by Landlord or if and as required elsewhere under this Lease, Tenant shall, within
ten (10) Business Days after written notice from Landlord and at Landlord’s election, deposit with Landlord such sums of money
or provide such additional letter of credit or amend any then-outstanding letter of credit or any combination of the forgoing as
Landlord may from time to time direct as necessary to bring the total amount of any then-outstanding letter of credit plus any cash
deposit held by Landlord in lieu of letter of credit to a sum equal to the amount set forth in Article 1.0, “REFERENCE
DATA”, for the defined term “Security Deposit:”.

 

    

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Provided Tenant is not then in default
under this Lease and no condition exists which with the passage of time or the giving of notice would constitute a default under this
Lease, within 30 days after the expiration of the Term of this Lease and surrender of possession of the Premises by Tenant to Landlord,
Landlord shall return to Tenant any then-outstanding letter of credit or, as the case may be, return to Tenant without interest any proceeds
of any letter of credit drawn upon by Landlord or whatever portion of such proceeds may remain after any permitted use or application
of such proceeds.

 

If Landlord conveys Landlord’s interest under this Lease, the proceeds
(or, if not drawn upon, any letter of credit) of such a letter of credit or any part thereof not previously applied, shall be turned over
by Landlord to Landlord’s grantee, and, when actually turned over, Tenant agrees to look solely to such grantee for proper application
of the proceeds herewith. The holder of a mortgage shall not be responsible to Tenant for the return of any letter of credit or application
of any proceeds of any letter of credit, whether or not such holder succeeds to the position of Landlord hereunder, unless such proceeds
or letter of credit shall have actually been received by such holder.

 

Notwithstanding anything to the
contrary above in this Section 6.2, “Security Deposit.”, or elsewhere in this Lease, provided that as of
the later of the Reduction Date (as defined below) or Tenant’s Security Deposit Reduction Request (as defined below), (i)
Tenant has not at any time been in default under this Lease beyond any applicable notice and cure period, (ii) Tenant is not in
default under this Lease and no condition known to Tenant or Landlord then exists which with the passage of time or the giving of
notice would constitute a default under this Lease, (iii) except in the case of a Permitted Transfer, this Lease has not been
assigned and the Premises or any portion of the Premises has not been sublet and (iv) Tenant’s net worth is satisfactory to
Landlord (provided, however, that Landlord shall not deny Tenant’s request for reduction of the Security Deposit as
contemplated in this provisions so long as Tenant has a net worth equal to or greater than the greater of (x) the net worth of
Tenant as of the date of this Lease or (y) the highest net worth of Tenant after the date of the this Lease through the date of
Tenant’s Security Deposit Reduction Request (as “Tenant’s Security Deposit Reduction Request” is defined
below in this Section) (all as determined in accordance with generally accepted accounting principles)), then, subject to the
provisions contained in this Section 6.2, “Security Deposit.”, and all other applicable provisions of this
Lease, after March 31, 2025 (the “Reduction Date”), the Security Deposit may be reduced by $126,000.00 to be a
total of $378,000.00.

 

Without limiting Landlord’s rights available elsewhere under this Lease,
at law or in equity, notwithstanding the immediately preceding paragraph, in the event of any default of Tenant beyond any applicable
notice and cure period, the Security Deposit shall be or shall again be and remain $504,000.00 from such occurrence through the balance
of the Term and Tenant shall, immediately upon notice from Landlord, pay to Landlord such funds as are required to restore the Security
Deposit to $504,000.00 or, if requested by Landlord, provide (in accordance with all lease terms relating to letters of credit) a letter
of credit in the amount of $504,000.00. The failure of Tenant to restore the Security Deposit or provide the letter of credit as required
shall be deemed a default by Tenant in the payment of Rent.

 

If in accordance with this
Section the Security Deposit may be reduced, Tenant shall request such reduction by notice to Landlord (“Tenant’s
Security Deposit Reduction Request”), which notice shall include information, calculations and explanations satisfactory
to Landlord as sufficient to make a determination whether or not the conditions of this Lease for reduction of the Security Deposit
have been met, and, within 45 days of such Tenant’s Security Deposit Reduction Request, Landlord, at Landlord’s discretion,
shall apply the amount by which the Security Deposit is to be reduced to Rent due under this Lease or refund such amount to Tenant
or, if applicable, cooperate and coordinate with Tenant to amend or replace any existing letter of credit.

 

    

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		6.3.	Taxes. “Real Estate Taxes”
shall mean all taxes, assessments and betterments, levied, assessed or imposed by any governmental authority upon the Property or any
portion thereof, or arising from, or imposed on, the ownership or operation of the Property or any portion thereof, or the ownership
of Tenant’s interest under any ground lease (if any) and any payment in addition to or in lieu of any of the same required now or in
the future; provided however that in no event shall Real Estate Taxes include any franchise taxes, capital stock taxes, inheritance,
estate, succession, transfer, gift taxes or any federal, state,
or local income tax. Real Estate Taxes shall not include any late payment penalty or interest unless Tenant has failed to timely pay any
amounts due under this Section 6.3, “Taxes.”, or unless such late payment penalty or interest is the result
of or related to some other act or omission of Tenant.

 

Tenant shall pay to Landlord as Additional Rent “Tenant’s
Proportionate Share of Real Estate Taxes” of all Real Estate Taxes, prorated with respect to any portion of a fiscal year in which
the Term of this Lease begins or ends. Such payments shall be made by Tenant to Landlord in installments corresponding to the installments
in which said taxes are payable by Landlord. Each payment shall be due and payable within twenty (20) days after written notice by Landlord
to Tenant of the amount of such installment, which notice shall include a copy of the applicable bill for Real Estate Taxes received by
Landlord from the applicable taxing authority.

 

If Landlord shall receive any refund of any Real Estate
Taxes of which Tenant has paid a portion pursuant to this Section, then, out of any balance remaining after deducting Landlord’s expenses
incurred in obtaining such refund, Landlord shall pay or credit to Tenant the same proportionate share of said balance, prorated as set
forth above, but in no event more than the amount paid by Tenant with respect to the year in question. Landlord shall have no obligation
to seek any such refund and Tenant shall have no right to seek or to control any abatement, dispute, or other proceeding with any governmental
agencies or entities with respect to “Real Estate Taxes”; provided, however, in the event Tenant requests Landlord to seek
from the City of Waltham a reduction in the assessed value of the parcel of land upon which a Building is situated and such request (i)
is made by notice given in accordance with Article 23.0 of this Lease, “BILLS AND NOTICES”, and (ii) includes a bona
fide appraisal of the value of such parcel (prepared by an appraiser with the same qualifications as are required of an appraiser contemplated
above in this Lease with respect to determination of fair market value for the Premises in the context of Tenant’s right to extend
the Term for the Option Term) and the appraised value of such parcel set forth in such appraisal is at least 20% lower than the value
of the same parcel as assessed by the City of Waltham for the relevant time period, Landlord agrees to make reasonable efforts (as determined
by Landlord in Landlord’s reasonable discretion) to seek from the City of Waltham a reduction in the assessed value of the applicable
parcel as soon as practical, subject to all applicable City of Waltham limitations on seeking reductions in assessed valuations, including,
without limitation, deadlines and time limitations on when a reduction in assessed value may be sought, and prerequisites for seeking
a reduction in assessed value, including, among other things, providing the City of Waltham with income and expense information, which
information Landlord may or may not from time to time provide at Landlord’s sole discretion.

 

Tenant shall with each Monthly Installment of Annual
Base Rent (and on or before the first Business Day of any month during which Tenant may have been relieved of Tenant’s
obligation to pay Annual Base Rent pursuant to the last sentence of Section 6.1, “Annual Base Rent.”),
make tax fund payments to Landlord. “Tax fund payments” refer to such payments as Landlord shall reasonably determine
from time to time to be sufficient to provide in the aggregate a fund adequate to pay, when they become due and payable, all
payments required from Tenant under this Section. In the event that tax fund payments are so demanded, and if the aggregate of said
tax fund payments is not adequate to pay Tenant’s share of such taxes, Tenant shall upon demand pay to Landlord the amount by which
such aggregate is less than the amount of said share. Any surplus tax fund payments made by Tenant shall be accounted for to Tenant
after any such surplus has been determined, and may be credited by Landlord against future tax fund payments or refunded to Tenant
at Landlord’s option.

 

    

    Page 13

    

 

If during the term of this Lease or any extension thereof,
a tax or excise on rents or other tax (excluding income tax), however described, shall be levied or assessed against Landlord by the Commonwealth
of Massachusetts or any political subdivision thereof on account of the rental hereunder, such tax or excise on rents or other taxes assessed
on the land and buildings of which the Premises form a part shall be deemed to constitute Real Estate Taxes for the purposes of this Section.
It is also understood and agreed that the term Real Estate Taxes may include betterments and improvement assessments, provided, however,
that Landlord shall for the purposes of this Section, be deemed to have elected to pay any such assessments over the longest period of
time permitted by law (whether or not Landlord in fact makes such election), and only those installments which are or would be payable
with respect to the tax years which are included in the term of this Lease or any extension thereof (with interest which is or would be
payable thereon) shall be included in the Real Estate Taxes for said tax years for the purposes hereof.

 

In the event the taxing authorities shall, during the
term of this Lease, or any extension thereof, assess along with Real Estate Taxes, a personal property tax on Tenant’s trade fixtures,
leasehold improvements, furnishings, lighting fixtures, heating and cooling equipment, or other equipment in the Premises, the Building
or elsewhere on the Property, whether or not such are owned and or installed by Landlord, the taxes thus assessed shall be paid by Tenant
to the taxing authority when due or, if such taxes shall be billed by the taxing authority to Landlord, such taxes shall be paid to Landlord
within twenty (20) days of notice by Landlord of the amount due.

 

		6.4.	Absolute Net Lease. Notwithstanding anything
to the contrary elsewhere in this Lease, Tenant’s Rent payments shall be net to Landlord such that this Lease yields to Landlord
the net Annual Base Rent, and Tenant shall pay all Annual Base Rent, Additional Rent, 100% of all costs of every kind relating to the
Premises, Tenant’s Proportionate Share of Real Estate Taxes and all costs of every kind relating to the Building and or the Property
and or this Lease (including, without limitation, Landlord’s Costs pursuant to Section 7.8, “Landlord Reservations.”,
if any, charges for all insurance carried by Landlord with respect to or relating to the Property and management fees in an amount equal
to 3% of the Annual Base Rent) without setoff, deduction, counterclaim, defense, abatement or demand.

 

Notwithstanding anything to the contrary above in this
Section 6.4, “Absolute Net Lease.”, the words “all costs of every kind relating to the Building and or
the Property and or this Lease” (collectively “Absolute Net Lease Costs”) shall not be deemed to include the
following except as otherwise specifically provided for elsewhere in this Lease:

 

(a)       Capital
improvements and replacements to the extent the same are (i) specifically Landlord’s obligation pursuant to this Lease or (ii) not
Landlord’s obligation pursuant to this Lease, wholly elective by Landlord, without benefit to Tenant and not done in conjunction
with Landlord’s rights provided in Section 7.8 “Landlord Reservations.”; or

 

(b)       Interest,
principal, points and fees on debts or amortization of any mortgage or mortgages or any other debt instrument encumbering the Building,
or rent payable by Landlord under any ground lease rental or other lease in the nature of a ground lease; or

 

(c)       Costs incurred
for the repair of damage to the Building to the extent that Landlord is reimbursed by insurance proceeds or in excess of a commercially
reasonable deductible; or

 

    

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(d)       Depreciation
and amortization, except on materials, tools, supplies and vendor-type equipment purchased by Landlord to enable Landlord to supply
services Landlord might otherwise contract for with a third party where such depreciation and amortization would otherwise have been
included in the charge for such third parties services, all as determined in accordance with generally accepted accounting
principles, consistently applied; or

 

(e)       Advertising
and promotional expenses, space planning, leasing commissions, attorneys’ fees, and other costs and expenses incurred in connection
with negotiations or disputes with prospective tenants of the Building or in connection with any financing or sale of the Property; or

 

(f)       Costs associated
with the operation of the business of the partnership or other entity constituting Landlord, as the same are distinguished from the costs
of operation of the Property, for example, (1) partnership level accounting and legal matters, (2) partnership level general and administrative
costs (provided that this shall not be construed to prevent or limit the inclusion of a “management fee” as provided for above
in this Section), (3) costs of defending any lawsuits with any mortgagee, (4) costs of selling, syndicating, financing, mortgaging or
hypothecating any of Landlord’s interest in the Building, (5) except as may be specifically provided for elsewhere under this Lease (for
example, without intended limitation, costs related to the pursuit of an abatement or refund of Real Estate Taxes and except as may relate
to the actual operation of the Building or the Property, for example, without intended limitation, efforts by Landlord to compel the local
municipality or utility company to deliver services for which they are responsible), costs (including attorneys’ fees and costs of settlement
judgments and payments in lieu thereof) arising from claims, disputes or potential disputes (other than those involving any act or omission
of Tenant) in connection with potential or actual claims, litigation or arbitrations pertaining to the Landlord and/or the Building and/or
the Property, and (6) Landlord’s political contributions or charitable donations; or

 

(g)       Overhead
and profit increment paid to Landlord’s subsidiaries or affiliates for services, supplies or materials, to the extent that the costs
of such services, supplies or materials exceed competitive costs of such services were they not so rendered by a subsidiary or affiliate;
or

 

(h)       Fines, penalties,
interest or other costs incurred as a result of Landlord’s failure to pay or perform Landlord’s obligations in a timely manner
as required by applicable law or contract; or

 

(i)       Costs resulting
from the failure of Landlord to comply with laws; or

 

(j)       To the
extent such compliance is solely Landlord’s responsibility and only to the extent such costs are expressly not Tenant’s responsibility
pursuant to this Lease or incurred as a result of or relating to any act or omission of Tenant or any person or entity claiming by through
or under Tenant, costs incurred in connection with environmental compliance, including but not limited to clean-up, response action or
remediation on, in, under or about the Property, including but not limited to costs and expenses associated with the defense, administration,
settlement, monitoring or management thereof.

 

Notwithstanding anything to the contrary above in this
Section 6.4, “Absolute Net Lease.” and without limiting the rights and remedies of Landlord provided for elsewhere
under this Lease, at law or in equity, if and to the extent as a result of or relating to any act or omission Tenant, any expense is incurred
by Landlord which would otherwise not be includable in Absolute Net Lease Costs, or the amount of any cost increased beyond what would
otherwise be includable in Absolute Net Lease Costs, such incurred or increased costs shall be includable in Absolute Net Lease Costs.

 

		6.5.	Intentionally omitted.

 

		6.6.	Late Payment Charge. If any installment of
Rent or Additional Rent or any other sum due from Tenant shall not be received by Landlord on the date
such installment or sum is due, Landlord reserves the right to assess, and Tenant then
shall pay, a late payment charge equal to two and one half percent (2.5%) of the total amount that is in arrears and a further late payment
charge equal to two and one half percent (2.5%) of the amount then outstanding may be assessed for each additional thirty (30) day period
(or any fraction thereof) that such amount remains unpaid. Acceptance of such late payment charge by Landlord shall in no event constitute
a waiver of Tenant’s default with respect to such overdue amount, nor prevent Landlord from exercising any of Landlord’s other rights
and remedies granted by this Lease.

 

    

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		6.7.	Books and Records. Promptly upon the request
of Landlord made no more than one time per fiscal quarter, Tenant shall furnish to Landlord a balance sheet as of the last day of the
most recently completed fiscal quarter or such more recent fiscal period for which a balance sheet is reasonably available and a similarly
current statement of Tenant’s income and expenses for the twelve months preceding the date of the aforementioned balance sheet, both
of which shall be prepared in reasonable detail in accordance with generally accepted accounting principles, audited by a reputable accounting
firm and certified as being complete and containing only true and accurate information by an officer or principal of Tenant. In addition
to the foregoing, within 15 days of any request by Landlord (but not more than once in any six month period), Tenant shall provide such
other financial or business plan related information as Landlord shall reasonably request, including without limitation, information
related to the capitalization of Tenant’s business. Landlord shall make reasonable efforts to maintain the confidentiality of information
received by Landlord pursuant to this Section, except to the extent disclosure of such information is required to enforce Landlord’s
rights under or related to this Lease or is ordered by a court of competent jurisdiction or such information is otherwise available to
the public.

 

		7.0	UTILITIES AND LANDLORD’S SERVICES

 

		7.1.	Utilities. Tenant shall, at Tenant’s
own expense and subject to all applicable terms and conditions of this Lease, arrange for all utilities Tenant requires for use in and
about the Building or elsewhere on the Property, including, without limitation, natural gas, electricity and water and sewer, and Tenant
shall pay when due all charges for and or relating to such utilities. Tenant shall pay such charges whether such charges shall be made
directly by a public, quasi-public or private utility company, by a governmental authority or subdivision or department thereof or by
any other entity providing or delivering such utilities. Tenant shall pay any tax or other charge imposed by any governmental authority
if based on a similar service used in the Building or elsewhere on the Property by Tenant. Such charges, if payable to Landlord, shall
be due within 10 Business Days of presentation of bills therefor. If Landlord shall pay any of such charges, Tenant shall reimburse Landlord
upon demand.

 

Tenant’s use of utilities shall not at any time exceed
the capacity of any of the pipes, feeders, risers or other conductors or equipment in, on or otherwise serving the Building or other portions
of the Property (the “Utility Systems”). In order to help ensure that such capacity is not exceeded and to avert possible
adverse effects upon the utility services for the Building or the Property, Tenant shall obtain Landlord’s prior written consent before
Tenant shall connect to the Utility Systems any fixtures, appliances or pieces of equipment other than those which, without modification
to the Utility Systems, (i) may be safely connected to the existing Utility Systems in compliance with all applicable laws, utility provider
and insurance company regulations and guidelines and terms and conditions of this Lease and (ii) will not cause permanent damage or injury
to the Building or any other portion of the Property or cause or create a dangerous condition or in any way diminish the value of the
Building or the Property, all as determined by Landlord in Landlord’s sole discretion.

 

    

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Without limiting the generality
of Section 8.2, “Alterations and Improvements by Tenant.” or any other applicable Section of this Lease,
Tenant shall not make any alteration or addition to the Utility Systems or related equipment in the Building or elsewhere on the
Property without the prior written consent of Landlord in advance and in each instance. Any alteration or additions to the Utility
Systems, including, without limitation, additional pipes, feeders, risers or the like and any other equipment proper and necessary
in connection with such additional pipes, feeders, or risers or the like (collectively “Modified Utility Delivery
Facilities”) which may be necessary to meet Tenant’s utility needs, may upon Tenant’s request and Landlord’s consent
(as required above in this grammatical paragraph or as may be otherwise required under this Lease) and at the sole cost and expense
of Tenant, be installed in accordance with plans and specifications therefor that have been approved in advance and in writing by
Landlord; provided, however that the foregoing language of this sentence shall not be deemed to obligate Landlord to consent to any
particular plans or specifications or any particular request of Tenant relating to Modified Utility Delivery Facilities. Landlord
agrees not to unreasonably withhold, delay or condition Landlord’s consent with respect to any Modified Utility Delivery
Facilities, provided such Modified Utility Delivery Facilities are permissible under applicable law, utility provider and insurance
company regulations and guidelines, all terms and conditions of this Lease and the installation of such Modified Utility Delivery
Facilities will not cause permanent damage or injury to the Building or any other portion of the Property or cause or create a
dangerous condition or in any way diminish the value of the Building or the Property, all as determined by Landlord in
Landlord’s sole discretion; and provided further that, notwithstanding anything to the contrary above in this Section or
elsewhere in this Lease, Landlord may elect to require (a) Tenant, at Tenant’s expense, at the expiration or earlier termination of
this Lease, to remove the Modified Utility Delivery Facilities and repair any damage to the Building or the Property caused by such
removal and or restore the Building and the Property (as the case may be) to substantially the same condition as prior to the
installation of the Modified Utility Delivery Facilities or (b) pay to Landlord the cost (as determined by Landlord) to remove the
Modified Utility Delivery Facilities and perform the related repairs and restoration contemplated in above in this sentence;
provided, however, that, if prior to the installation of particular Modified Utility Delivery Facilities and as part of Tenant’s
request for Landlord’s approval of such Modified Utility Delivery Facilities, Tenant requests in writing that Landlord indicate
whether Landlord will require Tenant to remove the Modified Utility Delivery Facilities and whether and how Tenant will be required
to repair and or restore the Building or other portion of the Property related to the Modified Utility Delivery Facilities, Landlord
shall respond to Tenant reasonably, promptly and in writing and Landlord shall only be able to require Tenant to perform the removal
and restoration described in such Landlord response with respect to the Modified Utility Delivery Facilities.

 

Tenant, at Tenant’s expense, shall purchase, install
and replace all light bulbs, tubes or other consumable light emitting devices used in and about the Property. Landlord shall not in any
way be liable or responsible to Tenant for any loss, damage or expense which Tenant may incur if the quantity, character, or supply of
any utility is changed or is no longer available or suitable for Tenant’s requirements.

 

		7.2.	Intentionally Omitted.

 

		7.3.	Heat and Air Conditioning. Tenant, at Tenant’s
sole expense, shall provide such heating, ventilation and air conditioning as Tenant shall require and shall cause the Premises to remain
heated, ventilated and cooled so as to prevent damage to the Building, including, without limitation, the mechanical and other systems
serving the Building. Tenant shall maintain the heating, ventilating and air conditioning (“HVAC”) systems serving the
Premises (“HVAC Systems”) in good order and repair throughout the Term, which obligation shall include, without limitation,
all maintenance, repairs and replacements. Throughout the Term, Tenant shall maintain HVAC service and preventative maintenance contracts,
which contracts and related contractors shall be subject to Landlord’s approval in advance in each instance and in all respects. Each
such HVAC contract shall include a requirement that, on a semi-annual basis, the contractor provide Landlord with reasonable documentation
demonstrating that HVAC equipment maintenance and repair is being performed regularly and in accordance with applicable laws, manufacturer’s
recommendations and industry best practices. If any such contractor fails to provide such documentation, Tenant shall be responsible
for providing same. At the expiration or earlier termination of the Term, Tenant shall, at the request of Landlord, assign any HVAC contracts
to Landlord.

    

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Notwithstanding anything to the contrary contained above
in this Section 7.3, “Heat and Air Conditioning.”, or elsewhere in this Lease, the following relating to the
condition of HVAC Systems upon delivery and Required Replacements (as defined below) shall apply with respect to HVAC Systems.

 

(A)       Landlord shall
deliver the HVAC Systems in good working order on the Term Commencement Date. In the event immediately upon delivery of the Premises on
the Term Commencement Date, the HVAC Systems are not in good working order, such a condition shall be deemed a “Delivery Deficiency”.
Notwithstanding Tenant’s obligation above in Section 4.1, “Occupancy As Is.”, to accept occupancy of the
Premises “as is”, in the event immediately upon delivery of the Premises (but in any event not longer than 24 hours after delivery
of the Premises), Tenant notifies Landlord of a Delivery Deficiency, Landlord shall promptly investigate such claim and, provided such
claim can be reasonably, immediately and without scientific, engineering or other complex study be verified to in fact be a Delivery Deficiency,
Landlord, at Landlord’s expense (without reimbursement from Tenant) shall commence to cure such Delivery Deficiency and diligently
prosecute such cure to completion. Unless the scope and or nature of a particular such Delivery Deficiency or the aggregate of multiple
such Delivery Deficiencies prevents Tenant from using materially all of the Premises for the permitted Use of the Premises, the Premises
shall be deemed delivered, Tenant shall accept occupancy of the Premises “as is” subject to Landlord’s obligation to
cure Delivery Deficiencies as set forth in this Section, and the Delivery Deficiencies shall have no effect on the Term Commencement Date.

 

(B)       An “HVAC
Unit” shall be deemed to be a so-called “package” HVAC unit mounted on the roof and serving the Premises exclusively,
which unit can be purchased and delivered as a complete unit (as opposed to a so-called “split system” or a system fabricated
or customized in the field). The replacement of a particular HVAC Unit shall be deemed required (a “Required Replacement”)
when such HVAC Unit cannot be repaired or the cost of a particular repair to such HVAC Unit would exceed 40% of the cost to replace such
HVAC Unit with a new HVAC Unit comparable in its capacity to heat and cool.

 

In the event of a Required Replacement, Landlord agrees to
perform such Required Replacement, at Landlord’s expense, provided all of the following conditions (the “Required Replacement
Preconditions”) are met:

 

		a.	Tenant is not and has not at any time during the immediately preceding twenty-four months been in default
under the Lease beyond any applicable cure period;

 

		b.	Tenant has complied with the provisions of the Lease which relate to maintenance of the Premises, in
particular, without limitation, Tenant’s obligations with respect to maintenance of the HVAC Systems;

 

		c.	Tenant is not using and has not at any time (A) used the Premises for any purpose that may have materially
adversely affected the HVAC Systems or (B) used the HVAC Systems for purposes other than those purposes for which such HVAC Systems were
designed;

 

		d.	Tenant is not doing and has not at any time done any negligent act or omission or other action which
would give rise, directly or indirectly, to a required replacement, including, without limitation, doing anything which would place an
excessive burden on the HVAC Systems;

 

		e.	Landlord determines independently by competent engineers knowledgeable of HVAC systems that an HVAC Unit
replacement is required in order to obtain the heating, ventilation and air conditioning that would otherwise have been provided by the
HVAC Systems existing as of the Term Commencement Date serving the Premises in its then condition under the circumstances then existing
(e.g. the then existing layout and use of the Premises as opposed to satisfying new HVAC requirements
based on changes in the Premises, the use of the Premises or other changes); and

    

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		f.	in the case where repair costs are anticipated to exceed 40% of replacement costs, Landlord has determined
independently that the cost of the repairs which would otherwise be required do in fact exceed 40% of the cost to replace the applicable
HVAC Unit.

 

Determination of the facts and circumstances bearing on a
Required Replacement and contemplated in items (b) through (f) above in this Section 7.3, “Heat and Air
Conditioning.”, shall be made by Landlord acting reasonably. In the event of any dispute or disagreement between Tenant
and Landlord pertaining to such facts and circumstance, such facts and circumstances shall be as been determined by three competent
engineers knowledgeable of HVAC systems, one working for Tenant, one working for Landlord and a third selected by the first two.

 

Notwithstanding the foregoing, Landlord shall under no circumstances
be required to replace an HVAC Unit if the cost of such replacement is less than $5,000 or the HVAC Unit to be replaced was installed
after the Term Commencement Date.

 

Landlord’s obligations with respect to Required Replacements
also shall be subject to all of the following.

 

Tenant shall notify Landlord in writing of a Required Replacement.
Such notice shall include (a) original quotes to perform the repairs which would be required notwithstanding the Required Replacement
from at least two reputable contractors or (b) an original letter, signed and stamped by a competent engineer knowledgeable of HVAC systems,
indicating that the applicable HVAC Unit cannot be repaired. Upon receipt of such notice, Landlord shall have 30 days to establish that
the Required Replacement Preconditions have in fact been met, including, without limitation, obtaining any relevant information from any
contractors and engineers as Landlord deems necessary. Tenant agrees, at Tenant’s expense, to cooperate and coordinate with Landlord
in this regard, including, without limitation, (a) responding to Landlord’s requests and the requests of Landlord’s contractors
and engineers for information and (b) without charge, abatement of rent or other offset, permitting Landlord and Landlord’s contractors
and engineers access to the Premises and the HVAC Systems and related records and other information. If and when Landlord has established
that the Required Replacement Preconditions have in fact been met, Landlord shall proceed diligently at Landlord’s expense to replace
the applicable HVAC Unit. Tenant, at Tenant’s expense, agrees to cooperate and coordinate with Landlord during such replacement,
including, without limitation, moving and or storing, temporarily or permanently, Tenant’s personal property, furniture, fixtures or equipment
as may be required to facilitate such replacement. Tenant agrees that Tenant shall reimburse Landlord upon demand for all costs (a) related
to any upgrades of any HVAC Unit if the Tenant requests that the replacement of such HVAC Unit have capabilities that are new, different
or in excess of the HVAC Unit being replaced and (b) related to any Required Replacement notification or request if it is determined that
the Required Replacement Preconditions have not been met.

 

In the event of a Required
Replacement, Tenant shall pay upon demand to Landlord as Additional Rent (but not sooner than completion of the Required
Replacement) a portion of the cost of such Required Replacement, which portion shall be reasonably determined by Landlord and shall
reflect the proportion that the balance of the Term then remaining bears to the useful life of each HVAC Unit replaced.

 

    

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		7.4.	Intentionally Omitted.

 

		7.5. 	Intentionally Omitted.

 

		7.6.	Cleaning. Tenant, at Tenant’s sole expense
shall furnish such cleaning services to the Building or other portions of the Property as Tenant may require or as may be necessary to
perform Tenant’s obligations under this Lease.

 

		7.7.	Other Maintenance and Services. Except as otherwise
provided in the articles entitled “CASUALTY” and “CONDEMNATION - EMINENT DOMAIN”, and in addition to
Tenant’s obligations in the Article contained herein entitled “MAINTENANCE OF AND IMPROVEMENTS TO PREMISES” and elsewhere
in this Lease, Tenant shall (a) keep and maintain the entire Building and the Property in good condition and repair, including, without
limitation the roof membrane, deck and structure, exterior walls and windows, structural floor slabs and columns, all heating and air
conditioning, tenant process and other systems in or serving the Building, and all utility systems on the Property and serving the Building
or other portions of the Property (including, without limitation, all elements of such utility systems, whether such elements are above
or below ground or inside or outside the Building), (b) keep and maintain all exterior lighting on the Property in good condition and
repair, (c) keep and maintain the Parking Areas and all walkways, roadways and other pedestrian or vehicular travel areas on the Property
clean and in good condition and repair and remove all snow and ice therefrom and (d) provide grounds maintenance to all landscaped areas
on the Property. Tenant’s obligations above in this Section shall be performed to a first-class suburban Boston and Waltham, Massachusetts
office building standard. Notwithstanding any interpretation of the immediately preceding two sentences to the contrary, Tenant’s
obligation to “keep and maintain” and “provide grounds maintenance” shall include, without limitation, all repairs,
maintenance and replacements as may be applicable to keep and maintain the particular element of the Property to the first class Waltham,
Massachusetts office building standard or to such higher standard as may be otherwise required pursuant to this Lease.

 

Notwithstanding anything to the contrary contained above
in this Section, provided that any replacement is not due (whether in whole or in part) to act or omission of Tenant, including, without
limitation, the failure of Tenant to perform Tenant’s obligations under the Lease, or the negligence or willful misconduct of any
person whomsoever (other than Landlord or its agents, contractors or employees acting with respect to Landlord within the scope of their
agency, contract or employment) or any change in laws, rules, orders or regulations of federal, state, county or local governments, Tenant
shall not be required to “replace” the roof membrane, deck and structure, exterior walls, exterior windows, structural floor
slabs or columns of the Building or the roadway or parking area pavement and Landlord, upon Landlord’s own independent reasonable
determination that replacement is in fact required, shall replace same. For the purposes of this Section, “replace” shall
be deemed to mean the removal and replacement of more than 20% of the entire applicable building component (e.g. 20% of the entire roadway
or parking area pavement, roof, exterior walls or structural floor slab or 20% of all of the windows or columns).

 

		7.8.	Landlord Reservations. Landlord reserves the
right for itself from time to time to perform such work as Landlord determines is necessary or desirable with respect to maintaining,
repairing or replacing (a) the roof membrane, roof deck and structure, exterior walls and windows, structural floor slabs, columns and
other structural elements of the Building, (b) walkways, roadways and parking areas (including, without limitation, the Parking Areas)
on the Property (including, without limitation, exterior lighting and snow and ice removal) and (c) grounds maintenance to landscaped
areas. Landlord’s exercise of such right at any time or from time to time shall not affect Tenant’s other obligations under
this Lease and Tenant shall, in accordance with the applicable provisions of this Lease, reimburse Landlord for Landlord’s costs
related to such maintenance, repairs and services (all of the foregoing, collectively, “Landlord’s Costs”); provided that
Landlord’s Costs shall be reasonable and reasonably consistent with the market in general for such maintenance, repairs and services.
	 	 	 

    

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With respect to payments due from Tenant to Landlord under
this Lease (other than Annual Base Rent) and also in the event Landlord exercises Landlord’s rights provided in the immediately preceding
paragraph, Tenant shall, if, as and when demanded by Landlord and with each Monthly Installment of Annual Base Rent (and on or before
the first Business Day of any month during which Tenant may have been relieved of Tenant’s obligation to pay Annual Base Rent pursuant
to the last sentence of Section 6.1, “Annual Base Rent.”), make Operating Fund Payments to Landlord. “Operating
Fund Payments” shall refer to such payments as Landlord shall determine from time to time to be sufficient to provide in the aggregate
a fund adequate to pay, when they become due and payable, all payments required from Tenant under this Lease, including, without limitation,
Landlord’s Costs. In the event Landlord determines at any time and from time to time that the amount then set for the payment of
Operating Fund Payments will be insufficient to pay all payments required from Tenant under this Lease, Landlord may, at Landlord’s
election demand supplemental payments or increase the amount of subsequent Operating Fund Payments as applicable and Tenant shall pay
such supplemental payments or Operating Fund Payments as so adjusted.

 

Landlord shall, deliver to Tenant an annual statement (“Landlord’s
Annual Statement”) of Landlord’s Costs and Operating Fund Payments for the immediately preceding calendar year. Landlord’s Annual
Statement shall be delivered to Tenant as soon as reasonably practical after Landlord’s compilation of the required information. Upon
Tenant’s receipt of Landlord’s Annual Statement, either (a) Tenant shall pay to Landlord the amount by which Landlord’s Costs exceed the
Operating Fund Payments for the applicable calendar year or (b) Landlord shall account to Tenant for the amount by which the Operating
Fund Payments exceed Landlord’s Costs for the applicable calendar year (which excess amount may be credited by Landlord against future
Operating Fund Payments or refunded to Tenant at Landlord’s option).

 

Provided Tenant is then current with all payments required
under this Lease (including, without limitation, all Operating Fund Payments) and not otherwise in default under this Lease, Tenant shall
have the right to request that Landlord make available to Tenant and allow Tenant to copy such information as is reasonably available
to Landlord and reasonably necessary for the purpose of allowing Tenant to verify the information contained in Landlord’s Annual Statement
(“Annual Statement Information”). If Landlord does not receive such Tenant request within thirty (30) days after providing
Tenant with Landlord’s Annual Statement, then Tenant’s right to receive any Annual Statement Information and to contest Landlord’s Annual
Statement shall be deemed waived. If Tenant’s request for the Annual Statement Information is timely received by Landlord, then within
30 days after Landlord’s receipt of Tenant’s request, the Annual Statement Information shall be made available to Tenant at Landlord’s
offices or, at Landlord’s election, the place where Landlord keeps Landlord’s records. No such request shall extend the time within
which Tenant is required to pay any amounts shown in Landlord’s Annual Statement or any Operating Fund Payments. Notwithstanding anything
to contrary contained above in this paragraph, under no circumstance shall Tenant use any consultant or other third party to review the
Operating Expense Information if such consultant or other third party is being paid on a contingency basis and Landlord shall have no
obligation to respond in any way to any such consultant or other third party. Within thirty (30) days after Landlord notified Tenant that
the Annual Statement Information was available to Tenant, Tenant shall notify Landlord as to any part of Landlord’s Annual Statement to
which Tenant objects, in which event (unless the parties are otherwise able to resolve Tenant’s objections) the matter shall be submitted
to arbitration in accordance with the commercial rules of the American Arbitration Association. If Tenant does not make objection within
such 30 day period, Tenant shall be deemed to have waived any objection and shall have no further right to challenge or object to the
information set forth in Landlord’s Annual Statement. Tenant agrees that all information provided to Tenant by Landlord and the resolution
of all disputes shall be maintained as confidential, except as may be required to enforce Tenant’s rights under this Lease.

    

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If Landlord is at any time exercising Landlord’s rights
with respect to the performance of certain work as described in this Section 7.8, “Landlord Reservations.”,
or other applicable provisions of this Lease, Landlord reserves the right to interrupt, curtail, stop or suspend the furnishing of services
and the operation of any Building or Property system, when necessary by reason of accident or emergency, or of repairs, alterations, replacements
or improvements in the reasonable judgment of Landlord desirable or necessary to be made, or of difficulty or inability in securing supplies
or labor, or of strikes, or of any other cause beyond the reasonable control of Landlord, whether such other cause be similar or dissimilar
to those herein above specifically mentioned, until said cause has been removed. Landlord shall have no responsibility or liability for
any such interruption, curtailment, stoppage, or suspension of service or system, except that, to the extent any such interruption, curtailment,
stoppage, or suspension is within the commercially reasonable control of Landlord, Landlord shall exercise reasonable diligence to eliminate
the cause of same. Except in the event of an emergency, Landlord agrees to provide reasonable notice prior to interrupting, curtailing,
stopping or suspending the furnishing of services and the operation of any Building systems and (except when such interruption, curtailment,
stoppage or suspension is due or related to a default by Tenant under this Lease or a condition caused by or exacerbated by Tenant) to
schedule such work so as to minimize unreasonable disruption of Tenant’s use of the Premises for the permitted Use of the Premises.
Except when made necessary by an act or omission of Tenant, or Tenant’s employees, agents, contractors or invitees, or except when
made necessary by reason of accident, emergency, difficulty or inability in securing supplies of labor, strikes, or of any other cause
beyond the reasonable control of Landlord, if the Premises are rendered unusable for Use of the Premises solely because the Landlord interrupts,
curtails, stops or suspends the furnishing of services or the operation of any building system to make alterations, replacements or improvements
and such interruption, curtailment, stoppage or suspension and the related inability to use the Premises for the Use of the Premises continues
for more than 20 consecutive Business Days, the Annual Base Rent shall abate thereafter until the Premises are usable for the Use of the
Premises.

 

		8.0	MAINTENANCE OF AND IMPROVEMENTS TO PREMISES

 

		8.1.	Changes or Alterations by Landlord. Landlord
reserves the right, exercisable by itself or its nominee, at any time and from time to time without the same constituting an actual or
constructive eviction and without incurring any liability to Tenant therefor or otherwise affecting Tenant’s obligations under this Lease,
to (i) make such changes, alterations, additions or improvements in or to the Parking Areas or other portions of the Land as Landlord
may deem reasonably necessary or desirable, (ii) to change the arrangement and/or location of curb cuts, roadways, walkways, parking
spaces, landscaped areas, exterior lighting, utility feeds and equipment and other such exterior elements of the Property and (iii) add
to or diminish or otherwise change the Land, provided, however, that (a) there be no unreasonable obstruction of the right of access
to, or unreasonable interference with the use and enjoyment of the Premises by Tenant for the permitted Use of the Premises and (b) the
number of legal sized parking spaces existing and striped on the Property immediately prior to the exercise of Landlord’s rights
pursuant to this sentence shall not be reduced. In the event Landlord exercises Landlord’s rights above in this Section, Landlord
shall make reasonable efforts to perform any construction work during such times in such a manner as to minimize interference with Tenant’s
use of the Premises for the permitted Use of the Premises; provided however that Landlord shall not be obligated to perform such work
during non-business or “off” hours or during such times as would necessitate Landlord paying overtime or premium rates for
labor, services, materials or otherwise. Nothing contained in this Article shall be deemed to relieve Tenant of any duty, obligation
or liability of Tenant with respect to making or causing to be made any repair, replacement or improvement or complying with any law,
order or requirement of any governmental or other authority. Landlord reserves the right to from time to time change the address of the
Building or the Property. Notwithstanding anything to the contrary contained in this Section or elsewhere in this Lease, except and to
the extent Landlord is exercising Landlord’s rights pursuant to Section 15.3 of this Lease, “Fees and Expenses.”,
Landlord shall not electively change the location of walls or doors
or make other changes inside the Building without first obtaining Tenant’s consent, which consent Tenant shall not unreasonably
withhold, delay or condition if such changes do not adversely affect Tenant’s use of the Premises for the permitted Use of the Premises,
and which consent Tenant may withhold in Tenant’s discretion if such changes adversely affect Tenant’s use of the Premises
for the permitted Use of the Premises.

    

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		8.2.	Alterations and Improvements by Tenant. Except
to the extent specifically provided below, Tenant shall make no alterations, decorations, installations, removals, additions or improvements
in or to the Building or elsewhere on the Property, nor permit any holes to be drilled or made in or on the Building or elsewhere on
the Property (collectively referred to as “Tenant Alterations”) except in each instance in such place and manner and
by contractors or mechanics all as shall first have been approved in advance and in writing by Landlord. Landlord agrees not to unreasonably
withhold such approval provided that (a) this Lease is in full force and effect, (b) Tenant is not and has not at any time been in default
under this Lease beyond any applicable notice and cure period and no condition known to Tenant or Landlord exists which with the passage
of time or the giving of notice would constitute a default under this Lease and (c) the proposed Tenant Alterations are consistent with
and directly related to the use of the Premises by Tenant for the permitted Use of the Premises, not visible from the exterior of the
Building and do not adversely affect the value of the Building or the ability to lease the Building as a first class bio-technology lab/office
building. No such installations or other work shall be undertaken or begun by Tenant until Landlord has approved written plans and specifications
therefor; and no amendments or additions to such plans and specifications shall be made without prior written consent of Landlord. Notwithstanding
anything to the contrary contained above in this Section, during the Term of this Lease Tenant may, without the prior approval of Landlord,
perform non-structural alterations, provided that (1) the total cost of all such alterations in the aggregate does not exceed $50,000.00
in any one year, (2) in advance of any such alterations, Tenant provides Landlord with (a) construction drawings stamped by a registered
architect and showing the proposed alterations, (b) a certification stating the cost of the proposed alterations and signed by an officer
of the entity constituting Tenant and (c) if required by the City of Waltham, a building permit for the proposed alterations issued by
the City of Waltham and (3) such alterations do not adversely affect the value of the Building or the ability to lease the Building as
a first class office/research and development or lab building. All alterations, decorations, installations, removals, additions and improvements
contemplated above in this Section shall be done at the sole expense of Tenant in such manner as Landlord may reasonably designate. If
Tenant shall make any alterations, installations, removals, additions or improvements, then Landlord may elect to require Tenant, at
Tenant’s expense, at the expiration of this Lease, to restore the Building and the Property (as the case may be) to substantially the
same condition as existed at the Term Commencement Date; provided however that if prior to the installation of such items and as part
of Tenant’s request for Landlord’s approval of such items, Tenant requests in writing that Landlord indicate whether and how Tenant will
be required to restore the Building or other portion of the Property, Landlord shall respond to Tenant reasonably, promptly and in writing
and Landlord shall only be able to require Tenant to perform the restoration described in such Landlord response.

 

		8.3.	Tenant’s Contractors - Mechanics’ and Other Liens -
Standard of Tenant’s Performance - Compliance with Laws. Whenever Tenant shall make any alteration, decoration, installation,
removal, addition or improvement or do any other work in or to the Building or elsewhere on the Property, Tenant will strictly observe
the following covenants and agreements:

 

(a) In no event shall any material
or equipment be incorporated in or added to the Building or any other portion of the Property in connection with any such
alteration, decoration, installation, addition or improvement which is subject to any lien, charge, mortgage or other encumbrance of
any kind whatsoever or is subject to any security interest or any form of title retention agreement. Any notice of contract or
mechanic’s or materialmen’s lien filed against the Property or any portion thereof for work claimed to have been done for, or
materials claimed to have been furnished to Tenant shall be removed or discharged by Tenant within ten (10) days thereafter, at the
expense of Tenant, by filing the bond required by law or otherwise. If Tenant fails so to remove or discharge any lien, Landlord may
do so at Tenant’s expense and Tenant shall reimburse Landlord for any expenses or costs incurred by Landlord in so doing upon
demand.

    

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(b)       All installations
or work done by Tenant under this or any other Article of this Lease shall be at Tenant’s own expense (unless expressly otherwise
provided) and shall at all times comply with (i) laws, rules, orders and regulations of governmental authorities having jurisdiction
thereof; (ii) orders, rules and regulations of any insurance rating bureau if and as applicable; and (iii) plans and specifications prepared
by and at the expense of Tenant and approved by Landlord prior to the commencement of any work.

 

(c)       Tenant
shall procure all necessary permits before undertaking any work in the Building or elsewhere on the Property; do all such work in a good
and workmanlike manner, employing materials of good quality and complying with all governmental requirements, and defend, save harmless,
exonerate and indemnify Landlord from all injury, loss or damage to any person or property occasioned by or growing out of such work.

 

		8.4.	Fixtures, Equipment and Improvements - Removal by Tenant.
All fixtures, equipment, improvements and appurtenances attached to or built into the Building or other portion of the Property
prior to or during the Term, or any extension thereof, whether (x) by Landlord, at Landlord’s expense or at the expense of Tenant,
(y) by any previous tenant or (z) by Tenant shall be and remain part of the Premises and shall not be removed by Tenant at the end of
the Term unless Landlord shall request Tenant to remove any of such fixtures, equipment, improvements and appurtenances, in which event
Tenant shall remove such at Tenant’s expense. Where not built into the Premises and, if furnished and installed by and at the sole expense
of Tenant, all removable furniture, trade fixtures and business equipment shall not be deemed included in such fixtures, equipment, improvements
and appurtenances and may be, and upon the request of Landlord shall be, removed by Tenant, at Tenant’s expense, upon the condition that
such removal shall not materially damage the Building, the Property or any portion thereof and that the cost of repairing any damage
to the Building, the Property or any portion thereof (as the case may be) arising from such removal shall be reimbursed to Landlord upon
demand, provided, however, that any of such items toward which Landlord shall have granted any allowance or credit to Tenant shall be
deemed not to have been furnished and installed by or at the sole expense of Tenant.

 

Notwithstanding any interpretation of the foregoing
language to the contrary, it is intended that unless Landlord notify Tenant otherwise (as is Landlord’s right pursuant to this paragraph),
at the expiration or earlier termination of the Term, the Premises, the Building and the Property should be left as a fully built out
office, research and development facility with the exception of those furniture, fixtures and equipment not attached and not built into
the Premises which are typically specific to specific office, research and development users. The standard for determining whether something
is attached to or built into the Premises (i.e. the Building or elsewhere on the Property with respect to Tenant’s tenancy) is that if
the removal of an item (i) requires tools or special skills for removal, (ii) has any material effect on the function or proper operation
of other Building or built-in office, research and development systems or (iii) necessitates replacement, modification or repair of any
other item attached to or built into the Building or other portion of the Property, then such item shall be deemed attached to or built
into the Premises. For convenience, this condition of having been deemed attached to or built into the Premises is referred to in the
balance of this paragraph as “built in”. The following are examples (without intended limitation) of items that are built
in and NOT built in. Shelving affixed to a wall with screws or other type of fasteners is built in. Freestanding shelving is NOT built
in. A computer connected to a 110v convenience outlet by a simple electrical cord and plug, but used for controlling Building or other
built in office, research and development systems is built in. A computer connected in the same way but NOT used for controlling Building
or built in office, research and development systems is NOT built in. Ice machines, drying ovens and telephone/data network equipment shall specifically
be deemed to be built in.

    

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Notwithstanding anything to the contrary contained above
in this Section 8.4, “Fixtures, Equipment and Improvements - Removal by Tenant.”, the items specifically identified on Exhibit
E, “Tenant’s Removable Equipment” may be, and upon the request of Landlord shall be, removed by Tenant, at Tenant’s
expense, and the cost of demolishing, capping, terminating, securing or making safe any utility connections related to the removal of
any Tenant’s Removable Equipment or the removal of other items from the Premises along with the cost of repairing any damage to
the Building, the Property or any portion either arising from such removal shall be paid by Tenant to Landlord upon demand.

 

Improvements existing in the Premises as of the date
of this Lease shall be deemed “Existing Improvements”. Notwithstanding anything to the contrary contained above in
this Section 8.4, “Fixtures, Equipment and Improvements - Removal by Tenant.” or elsewhere in this Lease, Landlord
shall not require Tenant to remove Existing Improvements.

 

		8.5.	Repairs by Tenant. In addition to all of Tenant’s
other obligations under this Lease, including, without limitation, Tenant obligation under Section 7.3, “Heat and Air Conditioning.”
and Section 7.7, “Other Maintenance and Services.”, Tenant shall keep or cause to be kept the Premises, the
entire Building and all other portions of the entire Property in such repair, order and condition as the same are in on the Term Commencement
Date or such better condition as they may be put in during the Term hereof, reasonable wear and tear excepted but in no event in less
than good and safe condition. With respect to casualty and condemnation, Article 13.0, “CASUALTY” and Article 14.0,
“CONDEMNATION - EMINENT DOMAIN” shall govern respectively. Without limiting the generality of the foregoing, Tenant
shall keep all windows and other glass whole and in good condition, and shall replace the same whenever broken with glass of the same
quality and appearance and Tenant shall keep all interior and exterior doors (including, without limitation, all related frames, hardware,
locks, closers and the like) operable and in good condition.

 

		8.6.	Locks. Tenant, at Tenant’s expense and
subject to all other applicable provisions of this Lease (including, without limitation, Section 8.2, “Alterations and Improvements
by Tenant.” and Section 11.3, “Access to Premises.”), shall provide and maintain such access
control mechanisms and equipment as Tenant may from time to time require.

 

		8.7.	Tenant’s Improvements and Condition of Premises at
Termination. Subject to all other applicable provisions of this Lease, including, without limitation, the provisions of Section
7.3, “Heat and Air Conditioning.” and Section 7.7, “Other Maintenance and Services.”,
upon the termination of this Lease and any extension thereof, by its own terms or otherwise, Tenant shall remove Tenant’s goods
and effects and those of all persons claiming by, through or under Tenant from the Building and all other portions of the Property and
shall peaceably yield up to Landlord the Building and all other portions of the Property and all alterations, erections, additions and
improvements pursuant to the Section entitled “Fixtures, Equipment and Improvements - Removal by Tenant.”,
in good repair, order, and condition in all respects, reasonable use and wear (which for the purposes of this paragraph shall not be
deemed to include holes in floors or walls or special wiring caused by the installation of Tenant’s fixtures or equipment) and damage
resulting from the negligence of Landlord or Landlord’s agents, contractors or employees (acting with respect to Landlord within
the scope of their agency, contract or employment) excepted but in no less than good and safe condition. It is further agreed and understood
that at the termination of this Lease or any extension thereof, Tenant shall have restored the Building and the Property to good repair,
order and condition in all respects, including but not limited to repair of all floor surfaces damaged by the removal of partitions,
machinery and equipment, and shall restore all floor areas to a good condition and repair, using materials to provide a consistent floor
surface, satisfactory to Landlord; and shall have cleaned and removed accumulations of dirt and particles, oils, greases, and discolorations
from all surfaces resulting from Tenant’s processes and shall leave the Building and all other portions of the Property broom clean.

    

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Without intended limitation and in addition to all other
obligations of Tenant under this Lease, the Premises and all other portions of the Building and the Property shall, at Tenant’s
sole expense, at the end of Term or earlier termination of this Lease, be surrendered to Landlord free of any damage or contamination
caused by or exacerbated by Tenant’s use of the Building and or the Property or otherwise caused by or exacerbated by any person
or entity other than Landlord or Landlord’s employees, agents or contractors acting respect to the Property within the scope of
their employment, agency or contract; provided however that, notwithstanding anything to the contrary above in this paragraph, to the
extent the presence of any such Hazardous Materials has not been exacerbated by Tenant or persons or entities claiming by through or under
Tenant, or Tenant’s use of the Building and or the Property or as a result of Tenant’s gross negligence or willful misconduct
or the gross negligence or willful misconduct of persons or entities claiming by through or under Tenant, Tenant shall not be responsible
for Hazardous Materials existing as of the date of this Lease (if any) and caused by persons or entities other than (i) Tenant or (ii)
persons or entities claiming by through or under Tenant.

 

With respect to casualty and condemnation, Article 13.0,
“CASUALTY” and Article 14.0, “CONDEMNATION - EMINENT DOMAIN” shall govern respectively.

 

		9.0	INSURANCE, INDEMNIFICATION, EXONERATION AND EXCULPATION

 

		9.1.	Tenant’s Insurance. Tenant shall procure,
keep in force and pay for insurance covering all claims and demands for injury to or death of persons or damage to property arising out
of or related to Tenant’s occupancy of the Premises. Insurance shall not be in amounts less than the following:

 

	COMMERCIAL GENERAL LIABILITY	 
	$1,000,000	combined single limit per occurrence, Coverage A
	$1,000,000	personal and advertising injury liability, Coverage B
	$1,000,000	products/completed operations liability aggregate
	$ 5,000	medical payments
	$ 50,000	fire damage legal liability
	$2,000,000	general aggregate

 

The general liability insurance is to be written on
the 2001 Insurance Services Office form or its equivalent.

 

UMBRELLA LIABILITY 

	$5,000,000	each occurrence
	$5,000,000	aggregate

 

WORKERS’ COMPENSATION

	Coverage A Workers’ Compensation –Statutory	 
	Coverage B Employer’s Liability -	$500,000 bodily injury by accident, each accident
		$500,000 bodily injury by disease, each employee

 $500,000 bodily injury by disease, policy aggregate

 

AUTOMOBILE LIABILITY

$1,000,000 Combined single limit, each accident applying
to all owned, hired and non-owned

automobiles

 

GLASS COVERAGE

Covering interior glass windows in the Premises, if any,
in such reasonable amounts as may be

established from time to time by Landlord.

 

CONTENTS AND LEASEHOLD IMPROVEMENTS COVERAGE

Adequately insuring all property situated in the Building
or elsewhere on the Property and belonging to or removable by Tenant.

    

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TENANT IMPROVEMENTS COVERAGE

Including (i) property insurance on a “Special
Form” (formerly “All Risk” form) (including earthquake and flood in reasonable amounts as determined by Landlord) in
an amount not less than 100% of the then full replacement cost of Tenant’s Improvements (as defined in paragraph (a) of Article
13.0, “CASUALTY”), (ii) insurance for loss or damage or loss of use (direct or indirect) from steam boilers, pressure
vessels or similar apparatus now or hereafter installed in the Building, or elsewhere on the Property, in the minimum amount of $5,000,000.00
or in such greater amounts as are then customary for properties similar to the Property and (iii) insurance against abatement or loss
of rent in case of loss under this paragraph or other peril similarly insured against in an amount equal to Rent payments to be made by
Tenant for eighteen months based on the Rent paid or payable for the most recent complete Lease Year. The phrase “replacement cost”
shall mean the actual replacement cost of Tenant’s Improvements, including and increased costs of construction endorsement (if available)
and the cost of debris removal and the cost of architectural, engineering and other expenses in connection with repairing and restoring
Tenant’s Improvements.

 

BUSINESS INTERRUPTION COVERAGE

Providing such coverage as is
customarily carried by responsible and prudent life science/bio- technology/medical device tenants in the Boston/Cambridge/Waltham
Massachusetts markets.

 

All insurance coverages required pursuant to this Section
shall not be less than such higher amounts as may from time to time be customarily carried by responsible and prudent tenants of comparable
premises in the Boston/Cambridge/Waltham market area and as may be required by Landlord from time to time. Provided that the Premises
are separately scheduled on any such policy or policies and the coverage(s) provided fulfills Tenant’s obligations to provide insurance
as set forth in this Lease, the insurance required pursuant to this Section may be provided by means of a policy or policies of blanket
insurance covering additional items or additional locations.

 

		9.2.	Additional Insureds. Tenant shall add Landlord
and such other entities or individuals (with an insurable interest in the Property) as Landlord may, from time to time, direct as Additional
Insureds on a primary and non-contributory basis on Tenant’s Commercial General Liability, Umbrella Liability, and Automobile policies.

 

With respect to glass, and tenant improvements coverages,
Landlord shall be named as Loss Payee As Their Interest May Appear.

 

		9.3.	Certificates of Insurance. All insurance required
under this Lease shall be effected with insurers authorized to do business in the Commonwealth of Massachusetts under valid and enforceable
policies. Such insurance shall provide that it not be cancelled without such insurers endeavoring to provide reasonable advance notice
to Landlord and each insured named therein; provided, however, that, notwithstanding any obligation of any insurer to provide Landlord
notice in advance of policy cancellation or endeavor to provide Landlord notice in advance of policy cancellation, Tenant, upon having
knowledge of any effective, pending or anticipated insurance policy cancellation, shall immediately give notice to Landlord of such cancellation;
provided that no such notice by insurer or Tenant shall be deemed to waive, change, diminish or otherwise modify any obligation of Tenant
to maintain the insurance policies, coverages and coverage limits as required pursuant to this Lease. On or before the first day of the
term of this Lease and thereafter not less than fifteen (15) days prior to the expiration date of each expiring policy, certificates
of such policies, issued by such insurers, together with evidence satisfactory to Landlord of the payment of all premiums for such policies,
shall be delivered by Tenant to Landlord, or to any additional insureds, entities or individuals as Landlord may from time to time direct.

 

    

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		9.4.	Tenant’s Compliance. Tenant covenants
and agrees that during said term and for such further time as Tenant shall hold the Premises or any part thereof, Tenant will comply
with all requirements of the Insurance Services Offices of Massachusetts and/or the Factory Mutual Engineering Association (or any similar
bodies succeeding to their respective powers) and any local Board of Fire Underwriters; will not make or allow any use or occupation
of the Building or any other portion of the Property that may make any insurance on the Building or any other portion of the Property,
or the contents thereof, void or voidable; and that in the event that Tenant does or permits anything to be done in the Building or elsewhere
on the Property (including, without limiting the generality of the foregoing, anything which in any way affects the sprinkler system)
which: (a) is classified as a “common hazard” or “special hazard” by said Insurance Services Offices of Massachusetts
(or its successor); (b) causes an aftercharge or (c) otherwise increases insurance rates and premium charges over those which would apply
but for the doing of such thing, including, but without limiting the generality thereof, increases resulting from the refusal of the
Factory Mutual Engineering Association (or any similar body succeeding to its business) to continue coverage of the Building, the Property
or any portion thereof; then Tenant will promptly pay to Landlord on demand all costs, including, without limitation, all increased premium
charges, caused by or related to the same for any and all of the following insurance:

 

insurance on the Building, the Property or any portion
thereof against damage by fire or water (including, without limitation, insurance with extended coverage, demolition, sprinkler leakage
and vandalism and malicious mischief endorsements) or Landlord’s rental insurance.

 

		9.5.	Indemnification. To the fullest extent permitted
by law (and not limited by the amounts of any insurance coverage required of Tenant under this Lease), Tenant agrees to defend, indemnify
and hold harmless Landlord (which term shall include, without limitation any of the managers, officers, trustees, directors, partners,
beneficiaries, joint venturers, members, stockholders or other principals or representatives, disclosed or undisclosed, of Landlord or
any managing agent) and such other entities or individuals with an insurable interest in the Property as Landlord may, from time to time,
direct as additional insureds on Tenant’s general liability, umbrella liability, automobile, glass and Tenant’s Improvements
coverage policies, from and against any and all claims, liabilities, penalties, damages or expenses (including without limitation reasonable
attorneys’ fees) asserted against or incurred by them:

 

(a) on account
of or based upon any injury to person, or loss of or damage to property sustained or occurring in or on the Property on account of or
based upon the act, omission, fault, negligence or misconduct of any person whomsoever other than Landlord or Landlord’s agents,
contractors or employees, acting with respect to Landlord within the scope of their agency, contract or employment;

 

(b) other than
as caused by Landlord or Landlord’s agents, contractors or employees, acting with respect to Landlord within the scope of their
agency, contract or employment and except for sub-surface contamination existing as of the date of this Lease (if any) and caused by persons
or entities other than (i) Tenant or (ii) persons or entities claiming by through or under Tenant: (1) the presence, disposal, release
or threatened release of any Hazardous Materials which are in, on, about or migrating from the Building or migrating from elsewhere on
the Property and affecting any soil, water, vegetation, buildings, personal property, persons, animals or otherwise, (2) any lawsuit,
brought or threatened, or government order relating to such Hazardous Materials, or (3) any violation of or failure to comply with any
laws, orders, regulations, requirements or demands of government authorities, which are based upon or in any way related to such Hazardous
Materials; and

 

    

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(c) on account
of or based upon (including moneys due on account of) any work or thing whatsoever done (other than by Landlord or Landlord’s agents,
contractors, or employees of either) in the Building or elsewhere on the Property during the Term of this Lease and during the period
of time, if any, prior to the Term Commencement Date or after the Term Expiration Date or earlier date on which this Lease is terminated
when Tenant may have been given access to the Building or any other portion of the Property;

 

and, in case any action or proceeding be brought against
Landlord by reason of any of the foregoing, Tenant, upon notice from Landlord, shall, at Tenant’s expense, resist or defend such
action or proceeding and employ counsel therefor reasonably satisfactory to Landlord, it being agreed that such counsel as may act for
insurance underwriters of Tenant engaged in such defense shall be deemed satisfactory.

 

		9.6.	Property of Tenant. In addition to and not
in limitation of the foregoing, and subject only to provisions of applicable law, Tenant covenants and agrees that all merchandise, furniture,
fixtures, equipment and property of every kind, nature and description which may be in or upon the Building or elsewhere on the Property
during the Term of this Lease, shall be at the sole risk and hazard of Tenant, and that if the whole or any part thereof shall be damaged,
destroyed, stolen or removed for any cause or reason whatsoever other than the negligence or willful misconduct of Landlord, no part
of said damage or loss shall be charged to, or borne by Landlord.

 

		9.7.	Landlord’s Liability. Landlord shall
not be liable for any injury or damage to persons or property resulting from fire, explosion, falling plaster, steam, gas, electricity,
electrical disturbance, water, rain, ice or snow or leaks from any part of the Building or any other portion of the Property or from
the pipes, appliances or plumbing works or from the roof, street or subsurface or from any other place or caused by any other cause of
whatever nature, unless caused by or due to the negligence or willful misconduct of Landlord, its agents, contractors or employees acting,
with respect to Landlord, within the scope of their agency, contract or employment; nor shall Landlord be liable for any such damage
caused by other tenants or persons in the Building or elsewhere on the Property or caused by operations in construction of any private,
public or quasi-public work; nor shall Landlord be liable for any latent defect in the Building or elsewhere on the Property. All of
the limitations on Landlord’s liability set forth in this Lease shall be subject to applicable law provided that, in any event,
Tenant agrees to pursue and exhaust all claims under Tenant’s insurance and other remedies (and to waive such claims against Landlord
to the extent Tenant obtains reimbursement through its insurance or other remedies) prior to seeking reimbursement from Landlord.

 

		9.8.	Waiver of Subrogation. The parties hereto shall
each endeavor to procure an appropriate clause in, or endorsement on, any fire or extended coverage insurance policy covering the Premises,
the Building or any other portion of the Property and personal property, fixtures and equipment located thereon or therein, pursuant
to which the insurance companies waive subrogation or consent to a waiver of right of recovery, and having obtained such clauses and/or
endorsements of waiver of subrogation or consent to a waiver of right of recovery each party hereby agrees that it will not make any
claim against or seek to recover from the other for any loss or damage to its property or the property of others resulting from fire
or other perils covered by such fire and extended coverage insurance; provided, however, that the release, discharge, exoneration and
covenant not to sue herein contained shall be limited by the terms and provisions of the waiver of subrogation clauses and/or endorsements
or clauses and/or endorsements consenting to a waiver of right of recovery and shall be coextensive therewith.

 

		9.9.	Property Insurance. Except to the extent of
Tenant’s insurance required pursuant to this Article, Landlord shall at all times during the Term carry a policy of insurance which
insures the Building for the replacement cost thereof (subject, at Landlord’s option, to commercially reasonable deductibles) against
loss or damage by fire or other hazards (namely, the perils against which insurance is afforded by broad form property insurance policy
“extended coverages” or, at Landlord’s option, by a “special forms coverage” policy and, at Landlord’s
option, with traditional business interruption coverage); provided, however, that Landlord shall not be responsible for, and shall not
be obligated to insure against (provided Landlord may elect to insure against), any loss of or damage to any personal property of Tenant
or which Tenant may have in the Building or elsewhere on the Property or any trade fixtures installed by or paid for by Tenant and in
the Building or elsewhere on the Property or any Tenant’s Improvements or other improvements which Tenant may construct in or on
the Building or elsewhere on the Property, and Landlord shall not be liable for any loss or damage to such property, regardless of cause,
including (subject to applicable laws) the negligence of Landlord or Landlord’s employees, agents, contractors, customers and invitees.
The cost of the foregoing insurance and all other insurance maintained by Landlord with respect to the Property (including, without limitation,
liability, property, boiler and machinery and lost rent insurance) shall be deemed to be included in Landlord’s Costs (described
in Section 7.8, “Landlord’s Reservations.”) and shall be reimbursed to Landlord in accordance with the
terms of this Lease.

 

    

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		9.10.	Landlord Indemnity. Landlord agrees to indemnify
and hold harmless Tenant from and against any and all claims, liabilities, penalties, damages or expenses (including without limitation
reasonable attorney’s fees) asserted against or incurred by Tenant on account of or based upon any injury to person, or loss of
or damage to property sustained or occurring in or about the Property to the extent same are on account of or based upon the negligence
or willful misconduct of Landlord or Landlord’s agents, contractors or employees acting within the scope of their agency, contract
or employment (as applicable) and not covered by insurance maintained (or required to be maintained, whichever is greater) by Tenant
pursuant to this Lease. This Section 9.10 shall not be deemed to limit Tenant’s obligations under Tenant’s indemnification
set forth in Section 9.5, “Indemnification.”, and this Section 9.10 shall be subject to the limitations set
forth in Section 9.7, “Landlord’s Liability.”.

 

		10.0	ASSIGNMENT, MORTGAGING, SUBLETTING, ETC.

 

Tenant covenants and agrees that neither this Lease nor the
term and estate hereby granted nor any interest herein or therein, will be assigned, mortgaged, pledged, encumbered or otherwise transferred
(whether voluntarily or by operation of law), and that neither the Building, the Property nor any part thereof, will be encumbered in
any manner by reason of any act or omission on the part of Tenant, or used or occupied, or permitted to be used or occupied, or utilized
for any reason whatsoever, by anyone other than Tenant, or for any use or purpose other than Use of the Premises as stated in the Article
contained herein entitled “REFERENCE DATA”, or be sublet, or offered or advertised for subletting, without the prior
written consent of Landlord in every case.

 

Landlord agrees not to unreasonably withhold, delay or condition
such consent provided that

 

(a) this Lease is
in full force and effect,

 

(b) Tenant is
not and has not at any time been in default under this Lease beyond any applicable notice and cure period and no condition known to Tenant
or Landlord exists which with the passage of time or the giving of notice would constitute a default under this Lease,

 

(c) the financial
worth of the proposed assignee or subtenant is satisfactory to Landlord, and

 

(d) any assignee
or subtenant of the entire Premises shall assume, by written recordable instrument, in form and content satisfactory to Landlord, Tenant
and any such subtenant or assignee, all acting reasonably, the due performance of all Tenant’s obligations under this Lease, including
any accrued obligations at the time of the assignment or subletting of the entire Premises or, in the case where a subtenant subleases
a portion of the Premises, such subtenant acknowledges that the sublease is subject and subordinate to this Lease.

 

For purposes hereof, the transfer of a controlling interest
in the corporation or other entity constituting Tenant shall be deemed an assignment of this Lease.

 

Notwithstanding the foregoing
language of this Article to the contrary, provided that

 

(a) this Lease is in full force and effect,

 

    

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(b) Tenant
is not at the time of the effective date of a Permitted Transfer in default under this Lease beyond any applicable notice and cure period
and has not at any time during the immediately preceding 12 months been in default under this Lease beyond any applicable notice and cure
period and no condition known to Tenant or Landlord exists which with the passage of time or the giving of notice would constitute a default
under this Lease and

 

(c) the Affiliate
(as defined below) shall assume, by written recordable instrument, in form and content satisfactory to Landlord (the “Assumption
Document”), the due performance of all Tenant’s obligations under this Lease, including any accrued obligations at the
time of the assignment or subletting,

 

(d) At the
time of the Permitted Transfer, the ultimate parent (if any) of the Affiliate shall guaranty the full performance of Tenant’s obligations
under this Lease in a form acceptable to Landlord (an “Ultimate Parent Guaranty”) (Provided, however, that, in the
event an Ultimate Parent Guaranty is in Tenant’s reasonable judgement infeasible, inapplicable or otherwise not available and Landlord’s
insistence on an Ultimate Parent Guaranty would in Tenant’s reasonable judgment prevent or unreasonably complicate the transaction
giving rise to the contemplated Permitted Transfer, then, (i) in addition to all other information to be provided by Tenant to Landlord
in conjunction with a Permitted Transfer, Tenant shall provide reasonable information and explanations to Landlord as to why an Ultimate
Parent Guaranty is infeasible, inapplicable or otherwise not available, (ii) an Ultimate Parent Guaranty shall not be a condition of the
applicable Permitted Transfer and (iii) the following shall apply. If the net worth of the assignee or subtenant Affiliate falls materially
below the net worth of such Affiliate as of the date the financial information was provided to Landlord in conjunction with the applicable
Permitted Transfer event, whether because of a transfer of assets by a parent entity or otherwise, (A) Tenant agrees to notify Landlord,
(B) Landlord reserves the right to then require reasonable additional Tenant credit enhancement, including, without limitation, a guaranty
of this Lease by another Tenant affiliated entity with a suitable net worth, a letter of credit, or some other commercially reasonable
means of credit enhancement, and (C) Tenant agrees to cooperate and coordinate with Landlord in providing such guaranty, letter of credit
or other credit enhancement) , and

 

(e) Tenant
provides Landlord with a Notice of Permitted Transfer (as described and in accordance with the provisions below),

 

Landlord’s consent shall not be required with respect
to an assignment of this Lease or subletting of the entire Premises or any portion thereof to an Affiliate for such time as such entity
remains an Affiliate. The foregoing shall be deemed a “Permitted Transfer”.

 

For purposes of this Article, the term “Affiliate”
shall be deemed to mean (a) any entity which controls, is controlled by or is under common control with Tenant or (b) any person or entity
having a net worth equal to or greater than the greater of (x) the net worth of Tenant upon the date of this Lease or (y) the net worth
of Tenant immediately prior to the Permitted Transfer (as determined in accordance with generally accepted accounting principles) and
(i) to which a controlling interest in Tenant is transferred (e.g. by transfer of capital stock) or (ii) which acquires all or substantially
all of the assets of Tenant (except in the case of bankruptcy) where the business of Tenant will continue to be operated as a going concern
substantially the same as prior to such acquisition of such assets, but in each of the foregoing instances under clause (a) of this paragraph
only for so long as such entity remains an “Affiliate” and thereafter Landlord’s consent shall be required as otherwise
provided above.

 

For purposes of this Article, the term “Notice
of Permitted Transfer” shall be deemed to mean a notice to Landlord at least 10 Business Days in advance of any assignment
or subleasing (subject to any legal restrictions governing the timing of such notice), which notice shall contain (1) the name and address
of the Affiliate to which this Lease will be assigned or the entire Premises (or any portion thereof) will be sublet, (2) a description
satisfactory to Landlord of the relationship between the Affiliate and Tenant, (3) evidence of the Affiliate’s financial condition
in the form of a current balance sheet and income and expense statements (all prepared in accordance with generally accepted accounting
principles and signed by an authorized officer of the Affiliate), (4) the effective date of the Permitted Transfer, (5) a copy of either
(a) an assignment and assumption agreement wherein the assignee assumes all of Tenant’s obligations under this Lease or (b) a sublease
agreement wherein the subtenant acknowledges that the sublease is subject and subordinate to this Lease, (6) a copy of the Assumption
Document (if not included as part of 5a or 5b above) and (7) a copy of the guaranty (or the guarantees, as the case may be) if applicable.

 

    

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In connection with any request by Tenant for such consent,
Tenant shall submit to Landlord, in writing, a statement containing the name of the proposed assignee, subtenant or other third party,
such information as to its financial responsibility and standing as Landlord may require, all of the terms and provisions upon which the
proposed transaction is to take place and such other information as Landlord may require. In addition, along with Tenant’s written
request for consent, Tenant shall deliver to Landlord a non-refundable assignment/sublease review fee of $2,500 which shall be applied
against assignment/sublease costs (if any) which are to be reimbursed by Tenant to Landlord as provided below in this Article 10.0, “ASSIGNMENT,
MORTGAGING, SUBLETTING, ETC.”.

 

The “Assignment/Sublease Consideration” shall
be the consideration (including, without limitation, all forms of rent and additional rent) payable by the assignee or subtenant on account
of an assignment of this Lease or sublease of all or a portion of the Premises. For the purposes of this calculation, the Assignment/Sublease
Consideration shall be deemed to not include so called “pass-through” charges, e.g. charges that will be passed through to
an assignee or subtenant. The following are examples (without limitation) of typical “pass-through” charges: operating expenses
and real estate taxes to be paid directly by Tenant, Landlord’s Costs (described in Section 7.8, “Landlord’s Reservations.”)
and Real Estate Taxes to be reimbursed to Landlord and the like.

 

The “Lease Rent” shall be the Annual Base Rent
and Additional Rent pursuant to this Lease, prorated on a per diem basis and allocated on a per square foot basis to the portion of the
Premises subject to an assignment or sublease. For the purposes of this calculation, “Additional Rent” shall be deemed to
exclude the Assignment/Sublease Excess Rent as defined below or any pass-through charges not included in the Assignment/Sublease Consideration
pursuant to the immediately preceding paragraph.

 

“Tenant’s Assignment/Sublease Costs” shall
be deemed to include the actual and reasonable out-of-pocket expenses paid by Tenant to third parties in connection with the assignment
of this Lease or sublease of all or a portion of the Premises for (a) brokerage commissions and (b) construction of certain improvements
in the Premises (or construction “allowances” applicable for such improvements if and to the extent such improvements are
actually completed and paid for by Tenant). For the purpose of calculating Tenant’s Assignment/Sublease Costs, such improvements
in the Premises shall be deemed to specifically include only changes in the locations of walls and doors (and plumbing, electrical, HVAC,
fire protection and ceiling changes related to such changes in the locations of walls and doors) and shall specifically not include changes
in telecommunications or data wiring or related equipment or any other changes. For purposes of the calculation hereunder, Tenant’s
Assignment/Sublease Costs shall be amortized over the term of the Assignment or Sublease, as the case may be, and applied on a monthly
basis to the determination of Assignment/Sublease Excess Rent (as set forth below)

 

If the Assignment/Sublease Consideration exceeds
this Lease Rent plus Tenant’s Assignment/Sublease Costs (except in the case of a Permitted Transfer), Tenant shall pay to
Landlord 75% of such excess (the “Assignment/Sublease Excess Rent”). The Assignment/Sublease Excess Rent shall be
paid to Landlord as Additional Rent in equal monthly installments during the balance of the Term with respect to an assignment and
over the sublease term with respect to a sublease, and shall be payable on the first day of each month beginning with the first full
month during which the assignment or sublease is effective.

 

    

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Notwithstanding the foregoing provisions of this Article,
in the event Tenant proposes to assign this Lease or enter into a sublease such that all or substantially all of the Premises will have
been sublet, Landlord, at Landlord’s option (except in the case of a Permitted Transfer), may give to Tenant, within thirty (30)
days after the submission by Tenant to Landlord of the statement required to be submitted in connection therewith, a notice terminating
this Lease on the date (referred to as the “Earlier Termination Date”) immediately prior to the effective date of
the proposed assignment or the proposed commencement date of the term of the proposed subletting, as set forth in such statement, and,
in the event such notice is given, this Lease and the Term shall come to an end and expire on the Earlier Termination Date with the same
effect as if it were the date originally fixed herein for the end of the Term of this Lease, and the Rent shall be apportioned as of
said Earlier Termination Date and any prepaid portion of Rent for any period after such date shall be refunded by Landlord to Tenant.

 

At the request of Landlord, Tenant shall execute and deliver
an instrument or instruments, in form satisfactory to Landlord, setting forth any modifications to this Lease contemplated in or resulting
from the operation of the foregoing provisions of this Article; however, neither Landlord’s failure to request any such instrument
nor Tenant’s failure to execute or deliver any such instrument shall vitiate the effect of the foregoing provisions of this Article.
The failure by Landlord to exercise its options under this Article with respect to any assignment or subletting shall not be deemed a
waiver of any such option with respect to any extension of such sublease or any subsequent assignment or subletting.

 

Tenant shall reimburse Landlord promptly, as Additional Rent,
for Landlord’s reasonable legal, professional, administrative, managerial and all other expenses related to any Notice of Permitted
Transfer or any request by Tenant for any consent required under the provisions of this Article, whether or not any Permitted Transfer
or other assignment or sublease actually takes place. With respect to the reimbursement of Landlord’s expenses as contemplated above
in this grammatical paragraph, in conjunction with seeking such reimbursement, Landlord agrees to provide Tenant with a statement of expenses
for which Landlord seeks reimbursement, which statement shall include a reasonably detailed breakdown of such expenses, but not a breakdown
more detailed than such expenses are detailed in this paragraph, e.g. legal, professional, administrative, managerial and other expenses;
provided, however, that, in no event shall a disagreement with respect to the particular form of statement or the level of detail be sufficient
reason for Tenant not to promptly reimburse Landlord as required above. Landlord reserves the right to require reimbursement of Landlord’s
expenses as contemplated in this paragraph as a condition of any consent requested of Landlord.

 

The listing of any name other than that of Tenant, whether
at any door of the Premises or in or on any Building or Property directory, or otherwise, shall not operate to vest any right or interest
in this Lease or in the Premises or be deemed to be the written consent of Landlord mentioned in this Article, it being expressly understood
that any such listing is a privilege extended by Landlord revocable at will by written notice to Tenant.

 

If this Lease be assigned, or if the Premises or any part
thereof be sublet or occupied by anybody other than Tenant, Landlord may at any time and from time to time, collect Rent and other charges
from the assignee, subtenant or occupant, and apply the net amount collected to the Rent and other charges herein reserved, but no such
assignment or collection shall be deemed a waiver of this covenant, or the acceptance of the assignee, subtenant or occupant as a tenant,
or a release of Tenant from the further performance by Tenant of covenants on the part of Tenant herein contained. The consent by Landlord
to an assignment or subletting or occupancy shall not in any way be construed to relieve Tenant from obtaining the express consent in
writing of Landlord to any further assignment or subletting or occupancy.

 

Notwithstanding any consent by Landlord, no assignment or
subletting of the Premises by Tenant shall relieve the assigning or subleasing Tenant from Tenant’s obligation to pay Rent to Landlord
or from Tenant’s obligation to observe or perform any and all of the terms, provisions, covenants and conditions of this Lease.
The intent of the preceding sentence is that the assigning or subleasing Tenant remains primarily liable in addition to the liability
of the assignee or subtenant as the case may be.

 

    

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		11.0	MISCELLANEOUS COVENANTS

 

		11.1.	Rules and Regulations. Tenant and Tenant’s
servants, employees, agents, visitors and licensees will faithfully observe such Rules and Regulations as are attached hereto as Exhibit
C and made a part hereof and such other reasonable rules and regulations as Landlord hereafter at any time or from time to time may make
and which in the reasonable judgment of Landlord are necessary for the reputation, safety, care or appearance of the Building or other
portions of the Property, or the preservation of good order therein, or the operation or maintenance of the Building or other portions
of the Property, or the equipment thereof, provided, however, that in the case of any conflict between the provisions of this Lease and
any such Rules and Regulations, the provisions of this Lease shall control.

 

		11.2.	Nuisance. Tenant shall not permit any nuisance
or use or practice on or about the Premises, the Building or elsewhere on the Property which is in violation of Landlord’s rules
and regulations or any municipal ordinance, law, rule or regulation or any State or Federal laws.

 

		11.3.	Access to Premises. Tenant shall: (i) permit
Landlord and any Mortgagee to have access to and to enter upon the Premises at all reasonable hours for the purposes of inspecting the
Building or equipment serving the Building (including, without limitation, sanitary, electrical, heating, air conditioning or other systems)
or making repairs, replacements or improvements required or permitted to be performed by Landlord pursuant to this Lease in or to the
Building or elsewhere on the Property or complying with all laws, orders and requirements of governmental or other authority or of exercising
any right reserved to Landlord by this Lease (including the right during the progress of any such repairs, replacements or improvements
or while performing work and furnishing materials in connection with compliance with any such laws, orders or requirements to take upon
or through, or to keep and store within, the Premises all necessary materials, tools and equipment); and (ii) permit Landlord, at reasonable
times, to show the Premises during ordinary business hours to any Mortgagee, prospective purchaser of any interest of Landlord in the
Building, the Property or any portion thereof, prospective Mortgagee, or prospective assignee of any Mortgage, and to any person contemplating
the leasing of the Premises or any part thereof. Such rights shall be exercised at such times and in such manner so as to minimize interference
with Tenant’s use of the Premises for the permitted Use of the Premises and, except in the event of an emergency (i.e. an event
immediately threatening life or property), Landlord shall give Tenant reasonable prior notice of any such entry (which such notice need
not be in writing or given in accordance with Article 23.0 of this Lease). If during the last month of the Term, Tenant shall have removed
substantially all of Tenant’s property from the Premises, Landlord may immediately enter and alter, renovate and redecorate the
Premises, without elimination or abatement of Rent, or incurring liability to Tenant for any compensation, and such acts shall have no
effect upon this Lease. If Tenant shall not be personally present to open and permit any entry into the Premises at any time when for
any reason an entry therein shall be necessary or permissible, Landlord or Landlord’s agents must nevertheless be able to gain
such entry by contacting a responsible representative of Tenant, whose name, address and telephone number shall be furnished by Tenant;
provided, however, that if such representative of Tenant is not or cannot be available within a reasonable period of time (given the
nature of or circumstances under which entry by Landlord is, in Landlord’s judgment necessary or permissible), this sentence shall
not be interpreted to prohibit Landlord from gaining access to or entering the premises at such times and by such means and Landlord
may in Landlord’s judgment deem appropriate.

 

During any exercise of Landlord’s rights of access
to, in or on the Premises or elsewhere on the Property pursuant to this Lease and without creating any liability whatsoever on the part
of Landlord, to the extent reasonable and practical under the circumstances as determined by Landlord, Landlord agrees to cooperate and
coordinate with Tenant’s reasonable procedures of which Landlord has knowledge (including, without limitation, requirements relating
to accompaniment, visitor identification, badges, etc.) (“Security Procedures”) with respect to the security of the
Premises and Tenant’s property (including, without limitation, Tenant’s intellectual property), provided, however, that any
additional reasonable expenses incurred by Landlord as a result of such cooperation and coordination shall be reimbursable to Landlord
as Additional Rent. If and to the extent Tenant’s Security Procedures restrict Landlord from performing any of Landlord’s
obligations under this Lease or Tenant’s Security Procedures would result in any additional expenses incurred by Landlord in the
performance of such obligations, Landlord shall be relieved of Landlord’s duty to perform such obligations and Tenant shall be
obligated to perform such obligations at Tenant’s expense (all as if same were originally set forth in this Lease as Tenant’s
obligations). At Tenant’s own expense and subject to the terms and conditions of this Lease (including, without limitation, this
paragraph), Tenant agrees to take whatever precautions Tenant deems necessary to safeguard Tenant’s property, in particular, without
limitation, Tenant’s intellectual property.

 

    

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		11.4.	Accidents to Sanitary and other Systems. Tenant
shall give to Landlord prompt notice of any fire or accident in the Building or elsewhere on the Property and of any damage to, or defective
condition in, any part or appurtenance of the Building’s or the Property’s sanitary, electrical, heating and air conditioning
or other systems.

 

		11.5.	Signs, Blinds and Drapes. Tenant shall not
place any signs on the exterior of the Building or elsewhere on the Property or on or in any window, public corridor or door visible
from the exterior of the Building. No drapes or blinds may be put on or in any window nor may any drapes or blinds be changed or removed
by Tenant except if and to the extent Tenant has obtained Landlord’s consent in advance in each instance. Notwithstanding the foregoing
language to the contrary in this paragraph, subject to all applicable terms and conditions of this Lease, including, without limitation,
obtaining Landlord’s consent in advance in each instance, Tenant may have (i) a monument sign (similar to previous signs in the
same location on the Property and consistent with similar signage on similar first class office buildings in Waltham, Massachusetts)
and (ii) the parking space identification signage existing as of the date of this Lease, and may change any of these from time to time
with Landlord’s consent obtained in each instance in advance, which consent Landlord shall not unreasonably withhold or delay.
The language of the immediately preceding sentence is intended to identify in concept where and to what extent Tenant may have certain
exterior signage but shall not be interpreted to require Landlord to consent to any particular sign.

 

		11.6.	Estoppel Certificate. Tenant shall at any time
and from time to time upon not less than fifteen (15) days’ prior notice from Landlord or from a Mortgagee to Tenant, execute,
acknowledge and deliver to the party making such request a statement in writing certifying that this Lease is unmodified and in full
force and effect (or if there have been modifications, that the same is in full force and effect as modified and stating the modifications),
the dates to which Rent has been paid in advance, if any, and stating whether or not to the best knowledge of the signer of such certificate
Landlord is in default in performance of any covenant, agreement, term, provision or condition contained in this Lease and, if so, specifying
each such default of which the signer may have knowledge, it being intended that any such statement delivered pursuant hereto may be
relied upon by any prospective purchaser of any interest in the Building, the Property or any portion thereof, any Mortgagee or prospective
Mortgagee, any tenant or prospective tenant thereof, any prospective assignee of any Mortgage, or any other party designated by Landlord.
The form of any such requested written statement shall be reasonable and in any event satisfactory to the requesting party.

 

Landlord shall at any time and from time to time upon
not less than fifteen (15) days’ prior notice from Tenant, execute, acknowledge and deliver to Tenant or such other person or entity
as Tenant may direct, a statement in writing certifying that this Lease is unmodified and in full force and effect (or if there have
been modifications, that the same is in full force and effect as modified and stating the modifications), the dates to which Rent has
been paid, and stating whether or not to the actual knowledge of the signer of such certificate Tenant is then in default in performance
of any covenant, agreement, term, provision or condition contained in this Lease and, if so, specifying each such default of which the
signer may have knowledge, it being intended that any such statement delivered pursuant to this paragraph may be relied upon by any person
or entity to which such certificate is addressed; provided, however, that, in no event shall any such statement given by Landlord be
deemed to modify this Lease in anyway. Upon receipt of an invoice therefor, Tenant agrees to reimburse Landlord for all reasonable costs
and expenses incurred by Landlord in providing any such certificate.

 

    

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		11.7.	Requirements of Law - Fines and Penalties.
Tenant at Tenant’s sole expense shall comply with all laws, rules, orders and regulations of federal, state, county and local governments
(including without limitation, the Americans with Disabilities Act, Public Law 101-336, 42 U.S.C. §§12101 et seq., as amended;
the Resource Conservation and Recovery Act, 42 U.S.C. §6901 et seq., as amended; the Comprehensive Environmental Response, Compensation
and Responsibility Act of 1980, codified in scattered sections of 26 U.S.C., 33 U.S.C., 42 U.S.C. and 42 U.S.C. §9602 et seq., as
amended; the Toxic Substances Control Act, 15 U.S.C. §2061 et seq., as amended; the Massachusetts Oil and Hazardous Materials Release
Prevention and Response Act, M.G.L. c.21E, as amended; and the Massachusetts Hazardous Waste Management Act, M.G.L. c.21C, as amended)
and with any direction of any public officer or officers, pursuant to law, which shall impose any duty upon Landlord or Tenant with respect
to and arising out of Tenant’s use or occupancy of the Premises, the Building or any other portion of the Property. If Tenant receives
notice of any violation of law, ordinance, order or regulation applicable to the Premises, the Building or any other portion of the Property,
Tenant shall give prompt notice thereof to Landlord.

 

In addition to the foregoing language of this Section 11.7,
“Requirements of Law - Fines and Penalties.” and all other obligations of Tenant under this Lease relating to
hazardous materials or otherwise, in the event of any release of any hazardous material (including, without limitation, materials deemed
“hazardous” pursuant to M.G.L. c.21E and or any other applicable law or regulation of any authority having jurisdiction),
Tenant shall immediately provide Landlord notice of such release, which notice shall include in reasonable detail, a description of such
release (including, without limitation, when, what and how much material, to what extent and under what circumstances such release occurred)
and copies of each and every report or filing made to any authorities having jurisdiction.

 

		11.8.	Floor Loading. Tenant shall not place a load
upon any floor of the Building or other portion of the Property exceeding the floor load per square foot area which such floor or other
portion of the Property was designed to carry and which is allowed by law. Tenant shall place and maintain all equipment and fixtures
appropriately relative to the safe design capacity of the structural element upon which such equipment or fixtures will bear and shall
place and maintain such equipment or fixtures so as to absorb and prevent vibration, noise, annoyance and damage or unreasonable wear
and tear on any structural element of the Building or other portion of the Property.

 

		11.9.	Tenant’s Access. Subject to such reasonable
rules and regulations as Landlord may impose from time to time, and causes beyond Landlord’s reasonable control, Tenant shall have
the right, during the Term of this Lease, to have access to the Premises, twenty-four hours per day, seven days per week. Any rules,
regulations, mechanisms or procedures of Landlord with respect to controlling or regulating access to the Building or other portions
of the Property shall not be interpreted as imposing any duty on Landlord to provide security for the Building or any portion of the
Property or any person in the Building or elsewhere on the Property.

 

		11.10.	Survival. Any and all liability for payments
under this Lease, and any and all liability for obligations (including, without limitation, indemnification provisions) relating to the
period prior to the expiration of the Term or earlier termination of this Lease and/or for obligations that by their nature arise thereafter,
shall survive such expiration or earlier termination.

 

		12.0	PARKING

 

Subject to all applicable Lease terms and conditions,
Tenant shall have the exclusive use of the Parking Areas, provided such Parking Areas are used (i) in connection with Tenant’s
use of the Premises for the permitted Use of the Premises and (ii) only for the purposes for which they are intended (i.e. as applicable,
parking and unparking cars, vehicular and pedestrian access to the Building or other portion of the Property and the delivery of supplies
and equipment to and from the Building all as permitted under this Lease); provided, however, in no event shall Landlord be liable to
Tenant and this Lease shall not be affected if any parking rights of Tenant hereunder are impaired by any law, ordinance or other governmental
regulation imposed after the date of the execution of this Lease.

 

    

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		13.0	CASUALTY

 

In the event of loss of, or damage to the Building or
the Property or any portion thereof by fire or other casualty, the rights and obligations of the parties hereto shall be as follows:

 

(a) If the Premises, or any part thereof, shall be damaged
by fire or other casualty, (x) Tenant shall give prompt notice thereof to Landlord, (y) Landlord, upon receiving such notice, shall, to
the extent such items are not research and development or tenant specific, proceed promptly and with due diligence, subject to unavoidable
delays and the terms of this Article 13.0, to repair, or cause to be repaired, such damage with respect to the foundation, floor slab,
structure, roof, exterior doors and walls, exterior windows and facade and utility connections from the street to the inside of the Building
(but not including distribution within the Building) and (z) upon notice from Landlord (“Landlord’s Restoration Directive
Notice”) Tenant shall proceed promptly and with due diligence, subject to unavoidable delays and the terms of this Article 13.0,
to repair, or cause to be repaired, such damage which is research and development and or tenant specific and all other damage not specifically
to be repaired by Landlord pursuant to the forgoing language of this sentence (collectively, “Tenant’s Improvements”);
provided, however, Tenant shall not be required to commence installation of Tenant’s Improvements sooner than is practical and reasonable
given the progress of Landlord’s required repair work. Notwithstanding anything in this Lease to the contrary, Landlord shall not
be required to (i) repair any Tenant’s Improvements or (ii) expend for repairs any amount in excess of the net insurance proceeds
obtained by Landlord and made available to Landlord less all costs and expenses including adjustor’s and attorney’s fees of
obtaining such insurance proceeds. In addition, Landlord’s obligations shall be subject to the rights of Mortgagees, applicable
laws, including, without limitation, zoning laws and building codes then in existence, and insurance regulations. If the Premises or any
part thereof shall be rendered untenantable by reason of such damage and, provided such damage was not caused or exacerbated by any act
or omission of Tenant or any agent, contractor, employee of Tenant or any other person or entity claiming by, through or under Tenant,
Annual Base Rent shall proportionately abate for the period from the date of such damage to the date Landlord has substantially completed
Landlord’s restoration obligations under this Section 13.0 (a), and thereafter until the earliest to occur of the following: (o)
the date on which Tenant substantially completes Tenant’s restoration obligations under this Article 13.0, “CASUALTY”,
(oo) the date that is 90 days after substantial completion of Landlord’s restoration work, or (ooo) the date on which the rental
interruption insurance maintained by Landlord is exhausted.

 

All proceeds for damages to Tenant’s Improvements
shall be paid directly to Landlord and such funds shall be disbursed in accordance with the following conditions:

 

(1) At the
time of any disbursement, Tenant shall not be in default under this Lease and no condition shall exist which with the passage of time
or giving of notice would constitute a default under this Lease and no mechanics’ or materialmen’s liens shall have been filed
and remain undischarged and unbonded.

 

(2) Tenant
shall have obtained Landlord’s advance approval with respect to all architects, contracts, contractors and plans and specifications
relating to restoration of Tenant’s Improvements and all of the other requirements of this Lease relating to alterations and improvements
by Tenant shall have been satisfied.

 

(3) Each request
for disbursement shall be made to Landlord and shall be accompanied by a certificate of Tenant, signed by an officer of Tenant describing
the completed work for which payment is requested, stating the cost incurred in connection therewith and stating that Tenant has not
previously received payment for such work. The certificate to be delivered by Tenant upon completion of the work shall, in addition,
state that the work has been completed and complies with the applicable requirements of this Lease and all legal requirements and insurance
requirements.

 

    

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(4) Upon receipt by Landlord of (A) evidence, satisfactory
to Landlord (including, without limitation, architects’ certificates), of the stage of completion, the estimated cost of completion,
and that the work performed to date has been performed in a good and workmanlike manner in accordance with the contracts and plans and
specifications approved by Landlord, (B) waivers of liens and (C) other evidence of cost and payment such that Landlord can verify that
the amounts disbursed from time to time are represented by work that is in fact completed in place and free and clear of mechanics’
liens and mechanics’ lien enforcement actions, then, provided that the other conditions of this Article 13 have been satisfied,
Landlord shall make a disbursement from time to time in an amount not exceeding the cost of the work completed since the last disbursement;
provided that in no event shall the total amount disbursed be such that the amount remaining undisbursed is insufficient to complete the
restoration of Tenant’s Improvements. The final disbursement shall not be made until the follow items have been received by Landlord:

 

(i) copies of
invoices for labor, materials or equipment charges incurred by Tenant in connection with Tenant’s Improvements,

(ii) copies
of “as-built” plans of Tenant’s Improvements prepared and certified by Tenant’s architect,

(iii) an
affidavit from Tenant’s architect that Tenant’s Improvements have been completed in accordance with the plans approved by
Landlord

(iv) final
lien waivers from all contractors, subcontractors and material suppliers engaged in restoration of Tenant’s Improvements, and

(v) a copy
of the Certificate of Occupancy for the Premises issued after the restoration of Tenant’s Improvements.

 

(5) Landlord shall have the right to retain ten (10%)
percent from each disbursement until restoration of Tenant’s Improvements is, in the reasonable judgment of Landlord, completed
including the issuance of any necessary certificate of occupancy.

 

(6) Prior to commencement of such restoration and at
any time during such restoration, if the estimated cost of such restoration, as reasonably determined by Landlord, exceeds the amount
of the insurance funds being held by Landlord for such restoration, the amount of such excess shall be paid by Tenant to Landlord to be
added to such insurance funds prior to any further disbursement, or Tenant shall fund at Tenant’s own expense the costs of such
restoration until the remaining insurance funds being held by Landlord for such restoration are sufficient for the completion of such
restoration. Upon completion of such restoration by Tenant as required under this Lease, and provided Tenant is not then in default under
this Lease and no condition shall exist which with passage of time or the giving of notice would constitute a default under this Lease,
any remaining sum being held by Landlord and relating to such restoration shall be paid to Tenant.

 

(7) Upon the default of Tenant under this Lease, including
without limitation, Tenant’s failure to proceed promptly and with due diligence to restore Tenant’s Improvements, Landlord
shall be entitled to retain such portion of such insurance proceeds as Landlord may determine reflects Landlord’s cost for Landlord
to perform Tenant’s obligations under this Lease; provided however that, while Landlord has the right to perform Tenant’s
obligations under this Lease to rebuild Tenant’s Improvements and Landlord may retain such portion of such insurance proceeds, Landlord,
at Landlord’s election, may nevertheless elect to simply retain such proceeds as compensation for Tenant’s failure to restore
Tenant’s Improvements.

 

(b) If, as a result of fire or other casualty, the whole or
a substantial portion of the Building or the Property is rendered untenantable, Landlord, within one hundred twenty (120) days from the
date of such fire or casualty, may either (A) terminate this Lease by notice to Tenant, specifying a date not less than twenty (20) nor
more than forty (40) days after the giving of such notice on which the Term of this Lease shall terminate or (B), notify Tenant of Landlord’s
intent to repair the damage to the Building and other portions of the Property as a result of such fire or other casualty, which notice
(“Landlord’s Restoration Notice”) shall include an estimate of how long (from the date of Landlord’s Restoration
Notice) Landlord expects it will take to complete such repairs (the “Estimated Restoration Period”).

 

    

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If the Estimated Restoration Period is longer than 14 months or
if the end of the Estimated Restoration Period is beyond the expiration of the Term or if the Estimated Restoration Period is longer than
8 months and at the end of the Estimated Restoration Period the duration of the remaining Term would be less than 12 months, provided
the fire or other casualty was not due in whole or in part or exacerbated in whole or in part by any act or omission of Tenant and provided
Tenant is not in default under this Lease and no condition known to Tenant or Landlord exists which with the passage of time or the giving
of notice would constitute a default under this Lease, Tenant may terminate this Lease by notice to Landlord within 15 days of the date
of Landlord’s Restoration Notice, specifying a date not less than twenty (20) nor more than forty (40) days after the date of Landlord’s
Restoration Notice on which the Term of this Lease shall terminate.

 

If neither Landlord or Tenant elects to terminate this
Lease as contemplated above in this Paragraph (b) of this Article, then Landlord shall (to the
extent of Landlord’s repair and restoration obligations in paragraph (a) above in this Article) proceed with diligence to repair
the damage to the Building and other portions of the Property as a result of such fire or other casualty and the Annual Base Rent shall
meanwhile proportionately abate, all as provided in Paragraph (a) of this Article. However, if Landlord fails to repair and restore the
Building or other portions of the Property (to the extent applicable and to the extent of Landlord’s repair and restoration obligations
in paragraph (a) above in this Article) within sixteen (16) months from the date of such fire or other casualty, Tenant within thirty
(30) days from the expiration of such sixteen (16) month period or from the expiration of any extension thereof by reason of unavoidable
delays as hereinafter provided, may terminate this Lease by notice to Landlord (“Tenant’s Casualty Termination Notice”),
specifying a date that is at least sixty (60) days after the giving of Tenant’s Casualty Termination Notice on which the Term of
this Lease shall terminate; provided however that if Landlord has substantially repaired and restored the Building and any other portions
of the Property (to the extent applicable and to the extent of Landlord’s repair and restoration obligations in paragraph (a) above
in this Article) prior to the expiration of such minimum 60 day period, then this Lease shall not terminate and Tenant’s Casualty
Termination Notice shall be null and void. The period within which the required repairs may be accomplished shall be extended by the
number of days lost as a result of unavoidable delays, which term shall be defined to include all delays referred to in the Article contained
herein entitled “INABILITY TO PERFORM - EXCULPATORY CLAUSE”.

 

(c) Landlord
shall not be required to repair or replace any of Tenant’s Improvements or any of Tenant’s business machinery, equipment,
cabinet work, furniture, personal property or other installations or improvements and no damages, compensation or claim shall be payable
by Landlord for inconvenience, loss of business or annoyance arising from any repair or restoration of the Building, the Property or any
portion thereof.

 

(d) The provisions
of this Article shall be considered an express agreement governing any instance of damage or destruction of the Premises, the Building
or any portion thereof by fire or other casualty, and any law now or hereafter in force providing for such a contingency in the absence
of express agreement shall have no application.

 

(e) In the
event of any termination of this Lease pursuant to this Article, the Term of this Lease shall expire as of the effective termination date
as fully and completely as if such date were the date originally fixed herein for the end of the Term of this Lease.

 

(f) Landlord’s
Architect’s certificate, given in good faith, shall be deemed conclusive of the statements therein contained and binding upon Tenant
with respect to the performance and completion of any repair or restoration work undertaken by Landlord pursuant to this Article or the
Article contained herein entitled “CONDEMNATION - EMINENT DOMAIN”.

 

    

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		14.0	CONDEMNATION - EMINENT DOMAIN

 

In the event that all or substantially all of the Building
or the Property shall be taken or appropriated by eminent domain or shall be condemned for any public or quasi-public use, or (by virtue
of any such taking, appropriation or condemnation) shall suffer any damage (direct, indirect or consequential) for which Landlord or Tenant
shall be entitled to compensation, then (and in any such event) this Lease and the term hereof may be terminated at the election of Landlord
by a notice in writing of its election so to terminate which shall be given by Landlord to Tenant within sixty (60) days following the
date on which Landlord shall have received notice of such taking, appropriation or condemnation. In the event that (i) the entire Building
or (ii) a substantial portion of the Building or the access to the Building shall be so taken (including, without limitation, any portion
of the Parking Areas such that the number of cars that may be legally parked on the Property is reduced by more than 40% or the means
of vehicular access to the remaining Parking Areas is eliminated), appropriated or condemned such that Tenant shall be reasonably precluded
from effectively utilizing the Premises for the permitted Use of the Premises for a period of time greater than 12 months, then (and in
any such event) this Lease and the Term hereof may be terminated at the election of Tenant by a notice in writing of its election so to
terminate which shall be given by Tenant to Landlord within sixty (60) days following the date on which Tenant shall have received notice
of such taking, appropriation or condemnation.

 

Upon the giving of any such notice of termination (either
by Landlord or Tenant) this Lease and the Term hereof shall terminate on or retroactively as of the date on which Tenant shall be required
to vacate any part of the Premises or shall be deprived of a substantial part of the means of access thereto, provided, however, that
Landlord may in Landlord’s notice elect to terminate this Lease and the Term hereof retroactively as of the date on which such taking,
appropriation or condemnation became legally effective. In the event of any such termination, this Lease and the Term hereof shall expire
as of the effective termination date as fully and completely as if such date were the date originally fixed herein for the end of the
Term of this Lease. If neither party (having the right so to do) elects to terminate, Landlord shall, with reasonable diligence and at
Landlord’s expense, restore the remainder of the Building or other portion of the Property (to the extent applicable and to the
extent of Landlord’s repair and restoration obligations in paragraph (a) above in Article 13.0, “CASUALTY”) and,
upon notice from Landlord, Tenant shall, with reasonable diligence and at Tenant’s expense, restore the remainder of the Building
or other portion of the Property (to the extent applicable and to the extent of Tenant’s repair and restoration obligations in paragraph
(a) above in Article 13.0, “CASUALTY” as if Landlord had given Tenant Landlord’s Restoration Directive Notice)
as nearly as practical to the same condition as existed prior to such taking, appropriation or condemnation in which event (i) a just
proportion of the Annual Base Rent, according to the nature and extent of the taking, appropriation or condemnation and the resulting
permanent injury to the Building or other portion of the Property and the means of access thereto, shall be permanently abated, and (ii)
a just proportion of the remainder of the Annual Base Rent, according to the nature and extent of the taking, appropriation or condemnation
and the resultant injury sustained by the Building or other portion of the Property and the means of access thereto, shall be abated until
Landlord has substantially completed Landlord’s restoration obligations under this Section 14.0.

 

Except for any award specifically reimbursing Tenant for
(i) Tenant’s moving or relocation expenses, (ii) Tenant’s repair and restoration obligations pursuant to this Article (which
shall be paid to Landlord and disbursed to Tenant in the same manner as the insurance proceeds for Tenant’s Improvements pursuant
to Article 13.0) and (iii) any award specifically made to Tenant for interruption of Tenant’s business, there are expressly reserved
to Landlord all rights to compensation and damages created, accrued or accruing by reason of any such taking, appropriation or condemnation.
In implementation and in confirmation of which Tenant does hereby acknowledge that Landlord shall be entitled to receive and retain all
such compensation and damages, grants to Landlord all and whatever rights (if any) Tenant may have to such compensation and damages,
and agrees to execute and deliver all and whatever further instruments of assignment as Landlord may from time to time request. In the
event of any taking of the Premises or any part thereof for temporary use (i.e. less than 360 days), (i) this Lease shall be and remain
unaffected thereby, and (ii) Tenant shall be entitled to receive for itself any award made for such use, provided, that if any taking
is for a period extending beyond the Term of this Lease, such award shall be apportioned between Landlord and Tenant as of the Term Expiration
Date.

 

    

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		15.0	DEFAULT

 

		15.1.	Conditions of Limitation - Re-entry - Termination. This Lease and the herein term and estate are upon the condition
that if (a) Tenant shall neglect or fail to perform or observe any of Tenant’s covenants herein, including, without limitation,
the covenants with regard to the payment when due of Rent; or (b) Tenant shall be involved in financial difficulties as evidenced by an
admission in writing by Tenant of Tenant’s inability to pay its debts generally as they become due, or by the making or offering
to make a composition of its debts with its creditors; or (c) Tenant shall make an assignment or trust mortgage, or other conveyance or
transfer of like nature, of all or a substantial part of its property for the benefit of its creditors, or (d) the leasehold hereby created
shall be taken on execution or by other process of law and shall not be revested in Tenant within sixty (60) days thereafter; or (e) a
receiver, sequester, trustee or similar officer shall be appointed by a court of competent jurisdiction to take charge of all or a substantial
part of Tenant’s property and such appointment shall not be vacated within sixty (60) days; or (f) any proceeding shall be instituted
by or against Tenant pursuant to any of the provisions of any Act of Congress or State law relating to bankruptcy, reorganization, arrangements,
compositions or other relief from creditors, and, in the case of any such proceeding instituted against it, if Tenant shall fail to have
such proceeding dismissed within thirty (30) days or if Tenant is adjudged bankrupt or insolvent as a result of any such proceeding; or
(g) any event shall occur or any contingency shall arise whereby this Lease, or the term and estate thereby created, would (by operation
of law or otherwise) devolve upon or pass to any person, firm or corporation other than Tenant, except as expressly permitted under the
Article of this Lease entitled “ASSIGNMENT, MORTGAGING, SUBLETTING, ETC.”; or (h) Tenant shall vacate all or substantially
all of the Premises and fail to maintain the Premises, the Building or the Property as required under this Lease; then, and in any such
event Landlord may, in a manner consistent with applicable law, immediately or at any time thereafter declare this Lease terminated by
notice to Tenant or, without further demand or notice, enter into and upon the Premises (or any part thereof in the name of the whole),
and in either such case (and without prejudice to any remedies which might otherwise be available for arrears of Rent or other charges
due hereunder or preceding breach of covenant and without prejudice to Tenant’s liability for damages as hereinafter stated), this
Lease shall immediately terminate (“Default Termination”). The words “re-entry” and “re-enter”
as used in this Lease are not restricted to their technical legal meaning. As used in items (b), (c), (e) and (f) of this Section, the
term “Tenant” shall also be deemed to refer to any guarantor of Tenant’s obligations hereunder.

 

		15.2.	Damages - Termination. In the event of a Default
Termination, Tenant shall be liable to Landlord and shall pay to Landlord (i) monthly in advance all Rent accruing from the date of a
Default Termination through the date scheduled for the Term of this Lease to expire had the Default Termination not occurred plus (ii)
all other unpaid Rent and other Tenant obligations accruing prior to the Default Termination, which amounts shall be paid immediately
upon Default Termination; provided that at Landlord’s election, exercisable by Landlord at the time of a Default Termination or
at any time thereafter (“Landlord’s Acceleration Election”), in addition to all other unpaid Rent and other
Tenant obligations accruing prior to Landlord’s Acceleration Election (including, without limitation the amounts set forth in (i)
and (ii) above in this paragraph), Tenant shall pay to Landlord as liquidated damages (and not as a penalty) the aggregate amount of
Rent accruing or which would accrue during the period starting with the exercise of Landlord’s Acceleration Election and ending
with the date scheduled for the expiration of the Term of this Lease had the Default Termination not occurred on an accelerated basis.
For the purpose of determining the amount of any component of Additional Rent to be included in any calculation of liquidated damages,
which component varies over time based on information or circumstances only knowable in the future (e.g. Real Estate Taxes, repair and
maintenance costs, utilities, etc.), the amount of such component of Additional Rent shall be reasonably determined by Landlord as follows.
With respect to each twelve-month period beginning with Landlord’s Acceleration Election, the amount of such component of Additional
Rent or the costs from which such component is derived (as applicable) shall be assumed to have increased by such amount as Landlord
shall reasonably determine, but in any event not less than 2% per year over each immediately prior twelve-month period. Landlord and
Tenant each acknowledge that if Landlord makes Landlord’s Acceleration Election: (i) it would be impossible or impracticable to
calculate the actual damages suffered by Landlord as a result of termination of this Lease pursuant to this Article 15.0, “DEFAULT”;
and (ii), the amount of the liquidated damages as determined by Landlord pursuant to this paragraph represents fair and reasonable compensation
to Landlord with respect to damages incurred by Landlord as a result of such termination.

 

    

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In the event of a Default Termination, Landlord may lease
the Premises, all or any portion thereof, at any time and from time to time to such other parties and on such terms as Landlord, in
Landlord’s sole discretion, may determine. Such re-letting shall not release Tenant from any liability whatsoever except that,
if and only to the extend required by applicable law, Landlord shall apply monies collected from any such re-letting to
Tenant’s obligations after first deducting Landlord’s expenses incurred to obtain possession of the Premises, remove
property belonging to Tenant or persons claiming by through or under Tenant from the Premises (including, without limitation, any
warehouse or storage charges), all expenses of every sort incurred by Landlord in conjunction with re-letting the Premises
(including, without limitation, brokerage fees, legal and other professional fees and construction and construction management
costs) and all administrative and managerial expenses associated with any of the forgoing; provided that in no event shall Tenant be
entitled to receive any excess of such net rents over the sums payable by Tenant to Landlord under this Lease and provided further
that, in any suit for the collection of damages pursuant to this subparagraph, Tenant shall in no event be entitled to a credit for
any net rents from a re-letting except to the extent that such net rents are actually received by Landlord.

 

Suit or suits for the recovery of damages, or any installments
thereof, may be brought by Landlord from time to time at Landlord’s election, and nothing contained herein shall be deemed to require
Landlord to postpone any suit until the date scheduled for the expiration of the Term of this Lease had the Default Termination not occurred.

 

In the case of any event of default by Tenant under this
Lease (whether or not such default results in a Default Termination), in addition to all of Tenant’s other obligations under this
Lease, Tenant shall be liable to Landlord for and shall pay to Landlord upon demand all expenses, costs and other obligations which Landlord
may incur by reason of or related to any such default, including, without limitation, legal, professional, administrative and managerial
expenses.

 

Nothing in this Section or elsewhere in this Lease shall
be construed as limiting or precluding the recovery by Landlord against Tenant of any sums or damages to which, in addition to the damages
particularly provided above, Landlord may lawfully be entitled by reason of any default hereunder on the part of Tenant.

 

Landlord and Tenant each waive their respective rights to
a jury trial of any monetary or non-monetary claim or cause of action based upon or arising out of this Lease, including, without limitation,
contract claims, tort claims, breach of duty claims and all other common law or statutory claims. Each party recognizes and agrees that
the foregoing mutual waiver constitutes a material inducement for it to enter into this Lease. Each party represents and warrants that
it has reviewed this waiver with its respective legal counsel and knowingly and voluntarily waives its jury trial rights following such
consultation.

 

    

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		15.3.	Fees and Expenses. If Tenant shall default in the performance of any covenant on Tenant’s part to be performed
as in this Lease contained, after notice to Tenant thereof and expiration of any applicable notice and cure period (except that no such
notice or cure period shall be required in the case of emergencies or in the case where damage to persons or property would otherwise
occur or be exacerbated), Landlord may immediately, or at any time thereafter, without notice, perform the same for the account of Tenant.
If Landlord at any time is compelled to pay or elects to pay any sum of money, or do any act which will require the payment of any sum
of money, by reason of the failure of Tenant to comply with any provision hereof, or if Landlord is compelled to or does incur any expense,
including without limitation reasonable attorneys’ fees, in instituting, prosecuting and/or defending any action or proceeding instituted
by reason of any default of Tenant hereunder or any costs incurred in recovering possession of the Premises after the termination of this
Lease, Tenant shall on demand pay to Landlord by way of reimbursement the sum or sums so paid by Landlord with all interest, costs and
damages. Notwithstanding the foregoing, if Landlord and Tenant become involved in litigation regarding the performance of their obligations
under this Lease, the unsuccessful party in any such litigation shall reimburse the successful party all of its reasonable costs and expenses
incurred in connection with such litigation, including, without limitation, reasonable attorneys’ fees and expenses.

 

		15.4.	Landlord’s Remedies Not Exclusive. The specified remedies to which Landlord may
resort hereunder are cumulative and are not intended to be exclusive of any remedies or means of redress to which Landlord may at any
time be lawfully entitled, and Landlord may invoke any remedy (including without limitation the remedy of specific performance) allowed
at law or in equity as if specific remedies were not herein provided for.

 

		15.5.	Grace Period. Notwithstanding anything to the contrary in this Article contained, Landlord
agrees not to take any action to terminate this Lease (a) for default by Tenant in the payment when due of Rent, if Tenant shall cure
such default within ten (10) days after written notice thereof given by Landlord to Tenant, or (b) for default by Tenant in the performance
of any other covenant, if Tenant shall cure such default within a period of thirty (30) days after written notice thereof given by Landlord
to Tenant (except where the nature of the default is such that remedial action should appropriately take place sooner, as indicated in
such written notice), or with respect to covenants other than to pay a sum of money within such additional period as may reasonably be
required to cure such default if (because of governmental restrictions or any other cause beyond the reasonable control of Tenant) the
default is of such a nature that it cannot be cured within such thirty (30)-day period, provided, however, (1) that there shall be no
extension of time beyond such thirty (30)-day period for the curing of any such default unless, not more than ten (10) days after the
receipt of the notice of default, Tenant in writing (i) shall specify the cause on account of which the default cannot be cured during
such period and shall advise Landlord of its intention duly to institute all steps necessary to cure the default and (ii) shall as soon
as may be reasonable duly institute and thereafter diligently prosecute to completion all steps necessary to cure such default and, (2)
that no notice of the opportunity to cure a default need be given, and no grace period whatsoever shall be allowed to Tenant, if the default
is incurable or if the covenant or condition the breach of which gave rise to the default had, by reason of a breach on a prior occasion
during the prior 24 months, been the subject of a notice hereunder to cure such default.

 

		16.0	ABANDONED PROPERTY

 

Any personal property in which Tenant has an interest
which shall remain in the Premises, the Building or elsewhere on the Property after the expiration or termination of the Term of this
Lease shall be conclusively deemed to have been abandoned, and may be disposed of in such manner as Landlord may see fit.

 

    

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		17.0	SUBORDINATION

 

This Lease is subject and subordinate in all respects
to any ground lease (if any), to all mortgages and other matters of record (if any) and to mortgages which may hereafter be placed on
or affect this Lease, the Property or any portion thereof or Landlord’s interest or estate therein, and to each advance made or
hereafter to be made under any such mortgages, and to all renewals, modifications, consolidations, replacements and extensions thereof
and substitutions therefor. This Article shall be self-operative and no further instrument of subordination shall be required. In confirmation
of such subordination, Tenant shall, subject to Tenant’s receipt of a commercially reasonable non-disturbance agreement, execute
and deliver promptly any certificate acknowledging or confirming such subordination that Landlord, any ground lessor, mortgagee or other
such party with an interest in the Property or their respective successor in interest (as the case may be) may request. Landlord agrees
to use reasonable efforts to obtain a Subordination, Non-Disturbance and Attornment agreement from any future Mortgagees holding mortgages
covering real estate of which the Premises is a part. The failure of Landlord to obtain any such agreement shall not be a default by
Landlord under this Lease. Upon receipt of an invoice therefor, Tenant agrees to reimburse Landlord for all reasonable costs and expenses
incurred by Landlord in obtaining any such Subordination, Non-Disturbance and Attornment agreement.

 

		18.0	QUIET ENJOYMENT

 

Landlord covenants that if, and so long as, Tenant keeps
and performs each and every covenant, agreement, term, provision and condition herein contained on the part and on behalf of Tenant to
be kept and performed, Tenant shall quietly enjoy the Premises from and against the claims of all persons claiming by, through or under
Landlord subject, nevertheless, to the covenants, agreements, terms, provisions and conditions of this Lease and to all Mortgages to which
this Lease is subject and subordinate.

 

Without incurring any liability to Tenant, Landlord may
permit access to the Premises and open the same, whether or not Tenant shall be present, upon any demand of any receiver, trustee, assignee
for the benefit of creditors, sheriff, marshall or court officer entitled to or reasonably purporting to be entitled to such access for
the purpose of taking possession of, or removing Tenant’s property or for any other lawful purpose (but this provision and any action
by Landlord hereunder shall not be deemed a recognition by Landlord that the person or official making such demand has any right or interest
in or to this Lease, or in or to the Premises), or upon demand of any representative of the fire, police, building, sanitation or other
department of the city, county, state or federal governments.

 

		19.0	ENTIRE AGREEMENT - WAIVER - SURRENDER

 

		19.1.	Entire Agreement. This Lease and the Exhibits
made a part hereof contain the entire and only agreement between the parties relative to the Premises and any and all statements and
representations, written and oral, including previous correspondence and agreements between the parties hereto, are merged herein. Tenant
acknowledges that all representations, and statements upon which it relied in executing this Lease are contained herein and that Tenant
in no way relied upon any other statements or representations, written or oral. Any executory agreement hereafter made shall be ineffective
to change, modify, discharge or effect an abandonment of this Lease in whole or in part unless such executory agreement is in writing
and signed by the party against whom enforcement of the change, modification, discharge or abandonment is sought. Nothing herein shall
prevent the parties from agreeing to amend this Lease provided such amendment shall be in writing and duly signed by both parties.

 

		19.2.	Waiver. The failure of Landlord to seek redress
for violation, or to insist upon the strict performance by Tenant of any covenant or condition of this Lease or any of the Rules and
Regulations promulgated hereunder, shall not prevent a subsequent act, which would have originally constituted a violation, from having
all the force and effect of an original violation. The failure of Tenant to seek redress for violation, or to insist upon the strict
performance by Landlord of any covenant or condition of this Lease shall not prevent a subsequent act, which would have originally constituted
a violation, from having all the force and effect of an original violation. The payment by Tenant or the receipt by Landlord of Rent
with knowledge of the breach of any covenant of this Lease shall not be deemed a waiver of such breach. No provisions of this Lease shall
be deemed to have been waived by Landlord or Tenant unless such waiver be in writing signed by the waiving party. No payment by Tenant
or receipt by Landlord of a lesser amount than the monthly Rent herein stipulated shall be deemed to be other than on account of the
stipulated Rent, nor shall any endorsement or statement on any check or any letter accompanying any check or payment of rent be deemed
an accord and satisfaction, and Landlord may accept such check or payment without prejudice to Landlord’s right to recover the
balance of such rent or pursue any other remedy in this Lease provided.

 

    

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		19.3.	Surrender. No act or thing done by Landlord
during the term hereby demised shall be deemed an acceptance of a surrender of the Premises, and no agreement to accept such surrender
shall be valid, unless in writing signed by Landlord. No employee of Landlord or of Landlord’s agents shall have any power to accept
the keys of the Premises prior to the termination of this Lease. The delivery of keys to any employee of Landlord or of Landlord’s
agents shall not operate as a termination of this Lease or a surrender of the Premises.

 

		20.0	INABILITY TO PERFORM - EXCULPATORY CLAUSE

 

Each of Landlord and Tenant shall be relieved from performing
its obligations under this Lease (other than Tenant’s obligations to pay Rent and make other monetary payments under this Lease,
which shall not be excused or delayed by the provisions of this Article) if, to the extent and for so long as such party is prevented
or delayed from doing so by reason of strikes or labor troubles or any other similar or dissimilar cause whatsoever beyond such party’s
reasonable control, including but not limited to, governmental preemption in connection with a national emergency or by reason of any
rule, order or regulation of any department or subdivision thereof of any governmental agency or by reason of the conditions of supply
and demand which have been or are affected by war, hostilities or other similar or dissimilar emergency. Landlord’s or Tenant’s
financial inability to perform shall not relieve Landlord or Tenant respectively from performance of their obligations under this Lease.
In each such instance of inability of either party to perform, such party shall exercise reasonable diligence to eliminate the cause of
such inability to perform.

 

Tenant shall neither assert nor seek to enforce any claim
for breach of this Lease against any of Landlord’s assets other than Landlord’s interest in the Property and Tenant agrees
to look solely to such interest for the satisfaction of any liability of Landlord under this Lease, it being specifically agreed that
in no event shall Landlord (which term shall include, without limitation any of the officers, trustees, directors, partners, beneficiaries,
joint venturers, members, stockholders or other principals or representatives, disclosed or undisclosed, of Landlord or any managing agent)
ever be personally liable for any such liability. This paragraph shall not limit any right that Tenant might otherwise have to obtain
injunctive relief against Landlord or to take any other action which shall not involve the personal liability of Landlord to respond in
monetary damages from Landlord’s assets other than Landlord’s interest in said real estate, as aforesaid. Notwithstanding
anything to the contrary contained in this Lease, in no event shall either party be liable for consequential damages.

 

Landlord shall not be in default unless a failure to
perform an obligation remains uncured for more than thirty (30) days following written notice from Tenant specifying the nature of such
default, or such longer period as may be reasonably required to correct such default.

 

		21.0	LANDLORD’S CONSENT

 

It is understood and agreed that whenever Landlord’s
consent or approval is required, either expressed or implied, by any provision of this Lease, the consent or approval may be granted or
withheld arbitrarily in Landlord’s sole discretion unless otherwise specifically stated in such provision. Notwithstanding anything
to the contrary contained in this Lease, if any provision of this Lease obligates Landlord not to unreasonably withhold its consent or
approval, an action for specific performance will be Tenant’s sole right and remedy in any dispute as to whether Landlord has breached
such obligation.

 

		22.0	INTENTIONALLY OMITTED.

 

		23.0	BILLS AND NOTICES

 

All bills and statements for reimbursement or other payments
or charges due from Tenant to Landlord hereunder shall be due and payable in full thirty (30) days, unless herein otherwise provided,
after submission thereof by Landlord to Tenant. Tenant’s failure to make timely payment of any amounts indicated by such bills
and statements, whether for work done by Landlord at Tenant’s request, reimbursement provided for by this Lease or for any other
sums properly owing by Tenant to Landlord, shall be treated as a default in the payment of Rent, in which event Landlord shall have all
rights and remedies provided in this Lease for the nonpayment of Rent.

 

    

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Any notice by either party to the other party shall be in
writing. Any notice from Landlord to Tenant shall be deemed duly served if and when such notice is presented for delivery to Tenant at
Tenant’s Address by FedEx, UPS or other nationally known reputable overnight courier service. Any notice from Tenant to Landlord
shall be deemed duly served if and when such notice is presented for delivery to Landlord at Landlord’s Address by FedEx, UPS or
other nationally known reputable overnight courier service.

 

Landlord may change Landlord’s Address and Tenant
may change Tenant’s Address by delivering or sending a notice in accordance with the foregoing paragraph to the other party stating
the change and setting forth the changed address, provided such changed address is within the United States.

 

		24.0	HOLDOVER

 

If Tenant remains in the Building or elsewhere on the Property
beyond the expiration or earlier termination of the Term of this Lease such holding over shall not be deemed to create any tenancy, but
Tenant (a) shall be a tenant-at-sufferance only, (b) shall during the first 30 days of such holding over pay Rent to Landlord at the times
and manner determined by Landlord at a daily rate in an amount equal to one and three quarters (1.75x) times the daily rate of the Rent
and other sums payable under this Lease as of the last day of the Term of this Lease, (c) shall during the second 30 days of such holding
over pay Rent to Landlord at the times and manner determined by Landlord at a daily rate in an amount equal to two (2x) times the daily
rate of the Rent and other sums payable under this Lease as of the last day of the Term of this Lease, (d) shall during the third 30 days
of such holding over pay Rent to Landlord at the times and manner determined by Landlord at a daily rate in an amount equal to two and
one half (2.5x) times the daily rate of the Rent and other sums payable under this Lease as of the last day of the Term of this Lease;
and thereafter shall pay Rent to Landlord at the times and manner determined by Landlord at a daily rate in an amount equal to three (3x)
times the daily rate of the Rent and other sums payable under this Lease as of the last day of the Term of this Lease and (e) shall indemnify,
defend and hold harmless Landlord from and against any and all damages, liabilities, claims and losses relating to or arising as a result
of and from the beginning of such holding over.

 

		25.0	NO OPTION

 

Employees or agents of Landlord have no authority to make
or agree to make a lease or any other agreement or undertaking in connection herewith. The submission of this document for examination
and negotiation does not constitute an offer or agreement to lease, or a reservation of, or option for the Premises and this document
shall become effective and binding as a lease only upon the execution and delivery hereof by both Landlord and Tenant. If Tenant is a
corporation, it agrees that the person executing this Lease for it has full authority to do so, and also to execute any notice, receipt,
consent, amendment of this Lease, or any other document pertaining to this Lease or the Premises until such time as Landlord receives
notice from Tenant to the contrary.

 

		26.0	PARTIES BOUND - SEIZIN OF TITLE

 

The covenants, agreements, terms, provisions and conditions
of this Lease shall bind and benefit the successors and assigns of the parties hereto with the same effect as if mentioned in each instance
where a party hereto is named or referred to, except that no violation of the provisions of the Article contained herein entitled “ASSIGNMENT,
MORTGAGING, SUBLETTING, ETC.” hereof shall operate to vest any rights in any successor or assignee of Tenant and that the provisions
of this Article shall not be construed as modifying the conditions of limitation contained in the Article contained herein entitled “DEFAULT”.

 

If, in connection with or as a consequence of the sale,
transfer or other disposition of the Building, the Property or any portion thereof, Landlord ceases to be the owner of the “landlord’s”
interest in the Premises, Landlord shall be entirely freed and relieved from the performance and observance thereafter of all covenants
and obligations hereunder accruing thereafter on the part of Landlord to be performed and observed, it being understood and agreed in
such event (and it shall be deemed and construed as a covenant running with the land) that the person succeeding to Landlord’s
ownership of said reversionary interest shall thereupon and thereafter assume, and perform and observe, any and all of such covenants
and obligations of Landlord.

 

    

    Page 46

    

 

		27.0	MISCELLANEOUS

 

		27.1.	Separability. If any provision of this Lease
or portion of such provision or the application thereof to any person or circumstance is for any reason held invalid or unenforceable,
the remainder of this Lease (or the remainder of such provision) and the application thereof to other persons or circumstances shall
not be affected thereby. In the event that any charge under this Lease is interpreted to be the payment of interest, the rate of interest
shall be equal to the lesser of the amount stated in this Lease or the maximum amount permitted by law.

 

		27.2.	Independent Covenants. The covenant and agreement of Tenant to pay to Landlord Annual Base
Rent, Real Estate Taxes, Landlord’s Costs, Additional Rent or any other payment to Landlord or any covenant or agreement of Tenant
to make payments to third parties (such as direct payments to a taxing authority) shall be independent of any covenant in this Lease to
be performed by Landlord; and default in Landlord’s performance of any such covenant shall not be a basis for Tenant to cease or
reduce payment to Landlord of Annual Base Rent, Real Estate Taxes, Landlord’s Costs, Additional Rent or any other payment to Landlord,
or to cease or reduce payments to third parties, or to terminate this Lease.

 

		27.3.	Captions. The captions are inserted only as a matter of convenience and for reference,
and in no way define, limit or describe the scope of this Lease nor the intent of any provisions thereof.

 

		27.4.	Landlord or Tenant. The words “Landlord” and “Tenant” as used in this Lease may extend to and
be applied to several parties whether male or female and to corporations and partnerships, and words importing the singular may include
the plural and all obligations of Tenant as herein defined shall be joint and several. Each of the provisions of this Lease shall bind
and inure to the benefit of the heirs, legal representatives, successors and assigns of the parties hereto and it is specifically understood
that Landlord has the right to assign all of its right, title and interest, or any portion thereof, in and to this Lease and any amendments
thereto to any other party or entity during the Term of this Lease and any extension thereof and that Tenant shall execute any and all
instruments that may be necessary to acknowledge and assent to such assignment.

 

		27.5.	Broker. Each party represents and warrants that it has not directly or indirectly dealt, with respect to the leasing
of space in the Building or elsewhere on the Property, with any broker or had its attention called to space in the Building or elsewhere
on the Property, by any broker other than Broker listed in the Article of this Lease entitled “REFERENCE DATA” whose
commission shall be the responsibility of Landlord. Each party agrees to exonerate and save harmless and indemnify the other against any
claims for a commission by any other broker, person or firm, with whom such party has dealt in connection with the execution and delivery
of this Lease.

 

		27.6.	Governing Law. This Lease is made pursuant to, and shall be governed by, and construed
in accordance with, the laws of the Commonwealth of Massachusetts.

 

		27.7.	Assignment of Lease and/or Rents. With reference to any assignment by Landlord of its
interest in this Lease and/or the Rent payable hereunder, conditional in nature or otherwise, which assignment is made to or held by a
bank, trust company, insurance company or other institutional lender holding a Mortgage on the Property or any portion thereof, Landlord
and Tenant agree:

 

(a) that the execution
thereof by Landlord and acceptance thereof by such Mortgagee shall never be deemed an assumption by such Mortgagee of any of the obligations
of Landlord hereunder, unless such Mortgagee shall, by written notice sent to Tenant, specifically otherwise elect; and

 

(b) that, except as aforesaid, such Mortgagee shall
be treated as having assumed Landlord’s obligations hereunder only upon foreclosure of such Mortgagee’s Mortgage and the
taking of possession of the Premises after having given notice of its intention to succeed to the interest of Landlord under this Lease.

 

    

    Page 47

    

 

		27.8.	Notice of Lease. Tenant agrees that it will
not record this Lease in any Registry of Deeds or Registry District, provided however that either party shall at the request of the other,
execute and deliver a recordable Notice of this Lease in the form prescribed by and as required by Chapter 183, Section 4 of the Massachusetts
General Laws.

 

		27.9.	Tenant’s Antenna.

 

		a.	The term “Antenna” shall refer to a dish type
antenna not exceeding 36” in diameter or 60” in height, along with all elements of or relating to such antenna including,
without limitation, the antenna itself and all antenna related mounting hardware, conduit and cabling.

 

		b.	Provided Tenant is the sole occupant of the Building, this Lease has not been assigned (except in the
case of a Permitted Transfer) and Tenant is not in default and has not at any time been in default (beyond any applicable notice and cure
period) under this Lease and there then exists no condition which with the giving of notice or the passage of time would constitute a
default under this Lease, Tenant may during the Term install, use and maintain one Antenna on the Building in accordance with and subject
to all applicable terms and conditions of this Lease; provided however that Tenant’s use of any Antenna shall be limited to use
directly in conjunction with Tenant’s use of the Premises for the permitted Use of the Premises. Tenant shall not permit the use
of any Antenna by others or share or sublet use of any Antenna or any portion of the capacity of the Antenna by others.

 

		c.	Prior to the expiration or earlier termination of this Lease, or if any Antenna shall be unused for
a period of more than 150 consecutive days, each such Antenna shall be removed in its entirety. The installation, use, maintenance and
removal of any Antenna and any related repairs to the Building shall be collectively referred to as “Antenna Work”.
Antenna Work shall be done at the sole expense of Tenant, in accordance with all applicable provisions of this Lease, including, without
limitation, Article 8.0 entitled “MAINTENANCE OF AND IMPROVEMENTS TO PREMISES” and Section 9.5, “Indemnification.”;
provided, however, notwithstanding that pursuant to Section 8.2, “Alterations and Improvements by Tenant.”,
Landlord’s prior approval is not required with respect to certain non-structural alterations, Landlord’s prior approval shall
be required with respect to the installation and removal of any Antenna or any other item to be installed, changed or removed by Tenant,
on Tenant’s behalf or at Tenant’s direction on the roof of the Building or otherwise outside of the Building (whether or not
such item is an Antenna or relates to an Antenna) and regardless of the cost or non-structural nature of such item.

 

		d.	Notwithstanding anything to the contrary contained in this Lease, the exact location, means and methods
of installation and other details of any Antenna (including, without limitation, any Antenna itself and all related cable and conduits)
shall be subject to the Landlord’s prior approval which may be granted, withheld or conditioned at Landlord’s sole but reasonable
discretion and coordinated with Landlord prior to actual installation. The location of any Antenna and the exact location and other details
of any Antenna installation shall not be modified in any way nor shall any item be added to or eliminated from any Antenna without the
express consent of Landlord in writing in advance in each instance.

 

		e.	Each Antenna shall be maintained in good condition in all respects at all times. Tenant shall be liable
for any damage to the Building or other portions of the Property caused by or related to the installation, use, maintenance or removal
of any Antenna or any portion of any Antenna. Promptly upon the occurrence of any such damage, Tenant shall notify Landlord and shall
reimburse Landlord upon demand for the cost to repair such damage.

 

    

    Page 48

    

 

		f.	Without limiting the generality of any similar provision of
this Lease, Tenant shall procure and maintain, at Tenant’s sole expense, all approvals, certificates, permits, licenses and any
other consents required by any governmental authority having jurisdiction (collectively referred to as “Permits”)
for the proper and lawful conduct of Tenant’s business, including, without limitation, the installation, use, maintenance and removal
of any Antenna. Tenant, at Tenant’s expense, shall at all times comply with the terms and conditions of the Permits and shall upon
request from time to time deliver to Landlord legible copies of such Permits.

 

		g.	Any Antenna shall be at Tenant’s sole risk and expense.

 

		h.	In the event any Antenna is not used for more than 150 consecutive
days and Tenant fails to remove such Antenna, such Antenna shall be deemed to have been abandoned and, in the event of such abandonment,
with respect to the Antenna, Landlord shall have, concurrent with the expiration of such 150 consecutive days or the Term Expiration
Date or earlier termination of this Lease (whichever is first to occur), among other rights, all rights under this Lease with respect
to abandoned personal property in the Premises.

 

		i.	In the event the taxing authorities shall assess a tax of
whatever nature on the Antenna, this Lease provision or the income (if any) derived from this Lease provision, the taxes thus assessed
shall be paid by Tenant (a) when due if payable by Tenant directly to such taxing authorities or (b) if payable to such taxing authorities
by Landlord such taxes shall be deemed to be included (along with all other items included pursuant to this Lease) in the definition
of “Real Estate Taxes” in Section 6.3 of this Lease, “Taxes.”.

 

		j.	Intentionally omitted.

 

		k.	Tenant shall not have any Antenna, communications equipment
or any other thing on the Property or use the Premises, any Building, the Property or any portion of any of the foregoing in any way
which causes measurable interference (as defined by the FCC) to any antenna or communications or other equipment operating in or on the
Property or any neighboring property, regardless of which equipment was first installed or first put in service. Without intended limitation
of Tenant’s indemnity obligations elsewhere under this Lease, Tenant specifically indemnifies, holds Landlord harmless and agrees
to defend Landlord against all claims and causes of action (including, without limitation, any reasonable attorney’s fees or other
costs that Landlord might incur as a result of such claims or causes of action) that the parties owning or operating such communications
or other equipment now or in the future, might bring against Landlord related to any Antenna. Tenant specifically agrees that under no
circumstances whatsoever shall Landlord’s consent to (i) the use or existence of any Antenna, (ii) the location in which or the
method by which any Antenna is installed, (iii) any other thing related to any Antenna or (iv) Tenant’s use of or any activity
of Tenant on or anything related to Tenant on the Property be deemed to relieve Tenant from any responsibility with respect to interference
as described in this paragraph or any other obligation contained in this Lease. Tenant, at Tenant’s expense, upon reasonable notice
from Landlord, shall relocate and or modify (permanently or temporarily) the installation of any Antenna when and as required to eliminate
interference, as part of other equipment installations, in conjunction with modifications to or maintenance of the Building or when otherwise
reasonably required by Landlord.

 

		l.	Anything contained in this Lease to the contrary notwithstanding,
except to the extent as otherwise provided by law or due to Landlord’s negligence or intentional misconduct, Landlord shall have
no liability whatsoever to Tenant on account of any claim, liability, action, loss, cost, expense or damage whether based upon breach
of warranty, tort (including negligence of Landlord), strict liability, contract, operation of law or otherwise arising out of or related
in any way to the Antenna. In no event shall Landlord be liable for any incidental, indirect, special or consequential damages arising
out of or related in any way to the Antenna, including, without limitation, claims in the nature of lost revenues, income or profits.

  

		m.	In the event of any conflict or inconsistency between this Section and other provisions of this Lease,
the higher standard shall be applied to Tenant’s obligations.

 

    

    Page 49

    

 

IN WITNESS WHEREOF, Landlord and Tenant have caused
this instrument to be executed under seal, all as of the day and year first above written.

 

	FOURTH AVENUE LLC	 	VICARIOUS SURGICAL INC.
	 	 	 	 	 
	BY: 	COMMONWEALTH DEVELOPMENT	 	 	 
	 	LLC, MANAGER	 	 	 
	 	 	 	 	 
	By	/s/ James A. Magliozzi	 	By	/s/ Adam Sachs
	James A. Magliozzi, manager	 	Name:  	Adam Sachs, duly authorized
	 	 	 	Title:	CEO

 

     

     

    

 

EXHIBIT A

LEASE PLAN 

 

     

     

    

 

EXHIBIT B

WORK LETTER

 

1.) Tenant, at
Tenant’s expense and prior to February 1, 2021 shall provide plans and drawings necessary to modify the Premises (the “Construction
Drawings”) as shown on the conceptual space plan attached (the “Space Plan”).

 

Landlord, at Tenant’s expense agrees to cooperate
and coordinate with Tenant in preparation of the Construction Drawings, including, without limitation, responding promptly to Tenant’s
inquiries or the inquiries of others engaged by Tenant to prepare the Construction Drawings and promptly reviewing and commenting on and
or approving progress and or final versions of the Construction Drawings. Landlord shall have no obligation to obtain pricing or commence
construction until Tenant and Landlord have each approved the Construction Drawings.

 

2.) As soon as
practical after Landlord’s approval of the Construction Drawings, Landlord shall provide Tenant with a price to perform the work
reflected in the Construction Drawings (the “Approved Construction Work”). The price to perform the Approved Construction
Work shall include a reasonable breakdown of major trades, e.g, demolition, drywall, plumbing, electrical, etc. Pricing may include “allowances”
for then unspecified materials or unknown and or unknowable quantities or other construction. The final pricing for items priced as allowances
shall be provided by Landlord as soon as practical after applicable materials, quantities and or other information becomes known to Landlord;
provided however, Tenant’s approval of any item priced as an allowance shall be deemed Tenant’s authorization to proceed and
Tenant’s agreement to pay for such items based on actual materials, quantities and related labor, supervision and other cost factors
when known.

 

Tenant agrees to promptly review, comment on and or approve pricing
provided by Landlord for the Approved Construction Work, and to timely cooperate and coordinate with Landlord with respect to any related
value engineering or other changes to the Construction Drawings which Tenant may elect. Landlord shall have no obligation to commence
construction until Tenant has approved the price to perform the Approved Construction Work. As soon as practical after Tenant’s
approval of such price and Tenant’s payment of any deposit (if any) as contemplated in Section 4.3 of this Lease, “Tenant
Improvement Allowance and Construction.”, Landlord shall commence the Approved Construction Work.

 

3.) Failure of Tenant to review,
comment on and or approve and otherwise cooperate and coordinate as contemplated above in this Work Letter, as well as all other delays
allocable to Tenant, including, without limitation, changes to the Space Plan and or the Construction Drawings, delays relating to finish
selections and or other information or documents requiring Tenant input or approval, and all other events and or circumstances within
the reasonable control of Tenant, shall be deemed included among other things in events giving rise to Tenant Delays

 

4.) Landlord shall
furnish labor and materials as necessary to perform the Approved Construction Work in accordance with applicable Lease provisions and
this Work Letter.

 

5.) Match Existing Warning: If in one or more
instances this Work Letter, the Construction Drawings (or related construction documents) calls for newly installed materials to
match existing materials, Landlord agrees to make commercially reasonable efforts to procure new materials matching the
specification of existing materials. Tenant understands and agrees, however, that, given the passage of time since the original
construction of the Existing Space or subsequent modifications to the Existing Space, procurement of materials matching the
specification of existing materials may not be practical and that even materials procured matching the specification of existing
materials may not match existing materials in every way, including, without limitation, appearance, texture and or composition.
Tenant further agrees that, notwithstanding anything to the contrary contained in this Work Letter, elsewhere in this Lease or
otherwise, in the event new materials matching the specification of existing materials or matching the appearance, texture and or
composition of existing materials are not readily available within the required time for Landlord’s completion of the Work or
at a cost consistent with the typical cost of the particular material when it was originally specified, Landlord shall have no
obligation to match existing materials and Tenant, acting reasonably and at Tenant’s expense, shall timely cooperate and
coordinate with Landlord to determine alternate materials, however different they may be. In particular, without limitation,
Landlord shall have no obligation to (i) have materials custom made or altered to match existing materials, (ii) pay premium costs
for priority manufacturing, transportation or otherwise or (iii) replace existing materials otherwise not Landlord’s
obligation to replace as a means of achieving matching materials.

 

0.) Notwithstanding
anything to the contrary contained in the Construction Drawings, this Work Letter or elsewhere in the Lease, in addition to all other
obligations of Tenant provided for under the Lease, except as may be otherwise expressly agreed to by Landlord in writing, Tenant shall
provide at Tenant’s own expense, all labor, equipment and materials related to the furnishing, installation, operation and maintenance
of Tenant’s telephone, telecommunications, security and computer systems, and all other furniture, fixtures and/or equipment as
may be required by Tenant.

 

1.) Notwithstanding
anything to the contrary contained above in this Work Letter or elsewhere in the Lease, Tenant shall, at Tenant’s expense, be responsible
for providing Landlord with Tenant’s finish selection specifications, including, without limitation, detailed specifications and
locations if and as applicable for paint colors, carpet, vinyl base and VCT, plastic laminate or other counter tops, millwork, blocking
in walls, special electrical needs, etc. Such information shall be delivered to Landlord complete and accurate in the then current industry
best-practices format no later than 10 days after execution of this Lease. Failure of Tenant to provide such information by such time
and in such format shall constitute a delay in the production of the plans and drawings caused by Tenant. Landlord shall have no obligation
to provide interior design services, the burden for which shall rest solely with Tenant.

 

     

     

    

 

EXHIBIT C

RULES AND REGULATIONS

 

		1.	The sidewalks, entrances, passages, courts, elevators, vestibules,
stairways, corridors or halls of the Property shall not be obstructed or encumbered or used for any purpose other than ingress and egress
to and from the premises demised to any tenant or occupant.

 

		2.	No awnings or other projections shall be attached to the
outside walls or windows of the Building without the prior written consent of Landlord. No curtains, blinds, shades, or screens shall
be attached or hung in, or used in connection with, any window or door of the premises demised to any tenant or occupant, without the
prior written consent of Landlord. Such awnings, projections, curtains, blinds, shades, screens, or other fixtures must be of a quality
type, design and color, and attached in a manner, approved by Landlord in writing in advance.

 

		3.	No sign, advertisement, object, notice or other lettering
shall be exhibited, inscribed, painted or affixed on any part of the outside of the premises demised to any tenant or occupant of the
Building without the prior written consent of Landlord.

 

		4.	No show cases or other articles shall be put in front of
or affixed to any part of the exterior of the Building.

 

		5.	The water and wash closets and other plumbing fixtures shall
not be used for any purposes other than those for which they were constructed, and no sweepings, rubbish, rags, or other substances shall
be thrown therein.

 

		6.	Without the prior written consent of Landlord, no space in
the Building shall be used for the sale of merchandise, goods or property of any kind at auction.

 

		7.	Each tenant must, upon the termination of its tenancy, restore
to Landlord all keys of stores, storage areas, offices and toilet rooms, either furnished to, or otherwise procured by, such tenant.

 

		8.	Landlord shall have the right to prohibit any advertising
by any tenant or occupant which, in Landlord’s opinion, tends to impair the reputation of the Building or its desirability as a
building and upon notice from Landlord, such tenant or occupant shall refrain from or discontinue such advertising.

 

		9.	No premises shall be used, or permitted to be used, for lodging
or sleeping, or for any illegal purpose.

 

		10.	If the premises demised to any tenant become infested with
vermin, such tenant, at its sole cost and expense, shall cause its premises to be exterminated from time to time, to the satisfaction
of Landlord, and shall employ such exterminators therefor as shall be approved by Landlord in writing and in advance.

 

		11.	No portion of the Premises shall be used, or permitted to
be used, at any time, without the prior written approval of Landlord, as a store for the sale or display of goods, wires or merchandise
of any kind, or as a restaurant, shop, booth, bootblack or other stand, or for the conduct of any business or occupation which predominantly
involves direct patronage of the general public in the premises demised to such tenant, or for manufacturing or for other similar purpose.

 

		12.	Tenant shall not block access to heating and air conditioning
or other equipment or elements of the Building to be maintained by Landlord, whether by the placement of Tenant’s furniture or
equipment or otherwise. In the event such heating and air conditioning or other equipment or element of the Building is blocked by the
placement of Tenant’s furniture or equipment or otherwise, Tenant, at Tenant’s expense, shall upon request of Landlord immediately
move such equipment.

 

     

     

    

 

EXHIBIT E

TENANT’S REMOVABLE EQUIPMENT

 

AV equipment

 

Modular cleanroom

 

Benching, chairs and other office furniture

 

Manufacturing test equipment

 

Machining equipment (e.g. CNC machines)

 

IT equipment (e.g. servers, wireless
access points, switches, routers, etc), except for IT equipment used for or related to control and or supervision of building operating
systems or other “built in” systems

 

     

     

    

 

EXHIBIT F

SUBURBAN MECHANICAL DESIGN SERVICES

LETTER

 

     

     

    

 

 

	 	 	
    12/21/20

     

    Wayne Smith

    JF White Properties

    1 Gateway Center

    Newton, MA 02158

     

    RE: JF White 78 Fourth Ave.

     

    Dear Wayne,

     

    The recent survey has found the following issues at 78 Fourth
    Ave that will require addressing. All other units were found in working condition and no issues were observed.

     

    FPT – 308 Enviro-Tec – Needs new fan contactor

    FPT – 303 Enviro-Tec – Needs new Honeywell actuator

    FPT – 206 Enviro-Tec – Needs new Honeywell Actuator &
    Fan Speed Control

    FPT – 204 Enviro-Tec – Needs new Honeywell Actuator

    RTU#1 Carrier - Model #48EKD058.—500ED. Serial #4500F43842

    Pin holes in 2 heat exchangers, condenser fan needs to be replaced,
    the

    condenser coil is leaking, and the compressor contactors need to be
    replaced.

    RTU#2 Carrier - Model #48EKD058–500ED. Serial #4500F43833

    Pin holes in 3 heat exchangers, the condenser coil is leaking, and
    compressor

    contactors need to be replaced.

    RTU#3 Carrier - Model #48FKD074-HA SERIES 510EJ. Serial #4300F40294

    The condenser coil leaking is leaking, and the compressor contactors
    need to be

    replaced.

    All RTUs were running in mechanical cooling. The sensor controlling
    the switch

    between the economizer and mechanical cooling is part of the BMS serviced
    by

    AEM. In the meantime, compressors have been shut off at the circuit
    breakers

    inside the appliance.

     

    If you have any other questions, please give me a call.

     

    Sincerely,

    Michael Ashton

    Operations Manager

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