Document:

Exhibit 10.5

 

 

EMPLOYMENT AGREEMENT

 

This Agreement is made effective the 1st
day of September 2017

 

BY & BETWEEN:

 

Bingham Canyon Corporation,

a publicly traded corporation, incorporated
pursuant to

the laws of the Nevada

(hereinafter “Bingham” or
“the Company”) whose principal office is at

4235 Commerce Street

Little River, SC 29566

 

-and-

 

Marion E. Paris, Jr.

a person who resides at

3360 Maiden Highway

Lincoln North Carolina

(hereinafter “Paris”)

 

In consideration of the
mutual covenants and promises herein contained, the Parties hereto agree as follows (hereinafter referred to as the “Agreement”):

 

ARTICLE 1 – SCOPE OF EMPLOYMENT

 

1.1
Paris has been appointed to the boards of directors of Bingham and its subsidiary, Paradigm Convergent Technologies Corporation
(hereinafter “Paradigm”).

 

1.2
The Company hereby appoints, employs and hires Paris to the employment position of President of the AnnihilyzerTM Division
of Paradigm.

 

1.3
Paris shall serve The Company and shall perform on behalf of The Company such reasonable duties as are consistent with his
board and executive positions and shall utilize his best efforts to promote the interests and goodwill of The Company.

 

1.4
Paris shall have full chief executive authority to design, plan, document, revise and amend as from time to time may be
necessary, and execute the Strategic Business Plan of the AnnihilyzerTM Division of Paradigm, subject only to the prior approval
of the CEO of Bingham.

 

ARTICLE 2 – EFFECTIVE DATE AND TERM
OF EMPLOYMENT

 

2.1
Notwithstanding the date of execution of this Agreement, Paris’s employment under this Agreement shall be effective
as at the 1st day of September 2017 (the “Commencement Date”), and the employment of Paris shall
continue thereafter for a period of five (5) years, automatically renewable for subsequent five (5) year terms unless this Agreement
earlier terminated (i) for cause by either party upon notice, (ii) by mutual agreement in writing signed by all parties, or (iii)
by Paris’ resignation which must be accepted by the Company.

 

ARTICLE 3 – EXCLUSIVE SERVICE

 

3.1
During the term of this Agreement, Paris shall well and faithfully serve the Company and to the best of Paris’ ability
devote the whole of his time and attention during business hours to the business of the Company, and shall not, without consent
in writing of the Company, engage in any other business (except as is cited in Schedule A – Exceptions).

 

ARTICLE 4 – COMPENSATION

 

4.1 Subject
to periodic adjustments, the Annual Base Salary payable by the Company to Paris for his services hereunder shall be $90,000 (ninety
thousand dollars, less any deductions or withholding as required by law), and shall be payable in equal bi-monthly installments
of $3,750 (three thousand seven hundred fifty dollars, less deductions or withholding), on the first (1st) and fifteenth
(15th) day of each month, or at such other intervals as may be agreed upon between Paris and the Company. The Annual
Base Salary will be reviewed by the Company each year and Paris’ compensation may be amended by the parties’ written
agreement, but the initial Annual Base Salary shall not be decreased.

 

4.2 Upon
execution of this employment agreement by Paris, in addition to the above Annual Base Salary, Paris shall also be entitled to a
signing bonus payable by the Company to Paris in the amount of $40,000 (forty thousand dollars). The signing bonus is to be paid
by the Company in two $20,000 (twenty thousand dollar) payments. The first payment shall be due and payable on or before September
1, 2017, and the second payment shall be due and payable on January 1, 2018.

 

4.3 It
is agreed by the parties that the signing bonus is due to Paris in accordance with this Agreement without any demand, deduction,
abatement, offset or credit even if this Agreement is subsequently terminated.

 

ARTICLE 5 – ADDITIONAL BENEFITS

 

5.1
In addition to the above compensation, Paris shall be entitled to participate fully in any benefit plans, profits, or other
issues provided currently or at any future time during the term of this Agreement by the Company for its employees.

 

5.2 In addition to the above
compensation, Paris shall also be entitled to four (4) weeks of paid vacation per fiscal year of the Company. The vacation may
be reviewed by the Company each year and Paris’ paid vacation may be amended by the parties’ written agreement, but
the initial paid vacation period of four (4) weeks shall not be decreased.

 

ARTICLE 6 – REIMBURSEMENT OF EXPENSES

 

6.1 Paris
shall be entitled to incur reasonable expenses necessary or incidental to the proper discharge of his duties, which expenses shall
be timely reimbursed by the company.

 

ARTICLE 7 – CONFIDENTIALITY OBLIGATIONS

 

7.1 Other
than as required in the normal and customary discharge of his duties and management of the Company, Paris shall not, either during
the term of his employment with the Company or any time thereafter, disclose or cause to be disclosed, to any person or entity
whatsoever (with the exception of the Company and its employees, officers, directors and agents), and unless required by law, any
secrets or confidential information concerning the technical trade secrets, business, affairs or financial performance or position
of the Company.

 

ARTICLE 8 – GOVERNING LAW AND JURISDICTION

 

8.1 This
Agreement shall be governed by and interpreted in accordance with the laws of the State of South Carolina. The parties further
submit to the jurisdiction of the Courts in the State of South Carolina or, as may be the case, United
States District Court for the District of South Carolina.

 

ARTICLE 9 – ENTIRE AGREEMENT

 

9.1 This
Agreement constitutes the entire agreement between the Parties hereto relating to the subject matter hereof and supersede all prior
and contemporaneous agreements, understandings, negotiations and discussions, whether verbal or written, of the parties, and there
are no warranties, representations or other agreements between the Parties in connection with the subject matter hereof, except
as specifically set forth in this Agreement.

 

9.2 Any
modification to this Agreement must be in writing and signed by Paris and the Company or such modification shall be void.

 

9.3 The
parties intend to be legally bound by this Agreement and it will be binding upon and inure to the benefit of the parties and their
respective successors and assigns. Neither party may assign this Agreement without the prior written consent of the other party
except to a legal successor in interest that assumes the assigning party’s obligations in their entirety.

 

9.4 The
undersigned parties have the right to perform the obligations contemplated by this Agreement and all such obligations have been
duly authorized.

 

9.5 All
notices required or permitted to be given by either party must be in writing and mailed by registered mail, return receipt requested,
to the other party addressed utilizing the addresses listed above. Either party may change its address effective 10 days following
written notice to the other party.

 

 

 

IN WITNESS WHEREOF, the parties have
executed this Agreement, effective as at the date first written.

 

	FOR:	BINGHAM CANYON CORPORATION &
	 	PARADIGM CONVERGENCE TECHNOLOGIES CORPORATION
	 	 
	 	 
	Per	/s/ Gary J. Grieco                    
	 	GARY J. GRIECO
	 	Chief Executive Officer
	 	 
	 	 
	FOR HIMSELF PERSONALLY
	 	 
	 	 
	 	/s/ Marion E. Paris                    
	 	MARION E. PARIS

 

 

    	 

    	 

    

 

 

SCHEDULE A

 

Exceptions to Article 3 - Exclusive Service

 

The Company acknowledges, agrees and understands
that:

		1.	Paris is, and will remain, CEO / President of Annihilare, Inc.;

		2.	Currently the Annihilare position makes very limited demands on Paris’ time; and,

		3.	Paris’ position as CEO/President of Annihilare, Inc., will not interfere with or obstruct Paris’
ability to perform his duties and responsibilities to Paradigm in any material way.

 

This Employment Agreement has been tendered
to Paris and executed by the Company with that knowledge and understanding.Exhibit 10.1

 

LEASE AGREEMENT

 

	Landlord:	WCS - 377 Plantation Street, Inc.
	 	 
	Tenant:	Mustang Bio, Inc.  
	 	 
	Building:	377 Plantation Street, Worcester, Massachusetts
	 	 
	Premises:	27,043 Rentable Square Feet on the First Floor of the Building

 

     

     

    

 

TABLE OF CONTENTS

 

	1.	Lease of Premises	7
	 	 	 
	2.	Delivery; Acceptance of Premises; Commencement Date; Extension Option	7
	 	 	 
	3.	Rent	10
	 	 	 
	4.	Intentionally Omitted	10
	 	 	 
	5.	Operating Expense Payments	11
	 	 	 
	6.	Security Deposit	14
	 	 	 
	7.	Use	15
	 	 	 
	8.	Holding Over	18
	 	 	 
	9.	Taxes	19
	 	 	 
	10.	Parking	19
	 	 	 
	11.	Utilities, Services	20
	 	 	 
	12.	Alterations and Tenant’s Property; Tenant’s Work	21
	 	 	 
	13.	Landlord's Repairs	23
	 	 	 
	14.	Tenant's Repairs	24
	 	 	 
	15.	Mechanic's Liens	24
	 	 	 
	16.	Indemnification	25
	 	 	 
	17.	Insurance	25
	 	 	 
	18.	Restoration	27
	 	 	 
	19.	Condemnation	28
	 	 	 
	20.	Events of Default	28
	 	 	 
	21.	Landlord's Remedies	29
	 	 	 
	22.	Assignment and Subletting	32
	 	 	 
	23.	Estoppel Certificate	35
	 	 	 
	24.	Quiet Enjoyment	35

 

    	 	2	 

     

    

 

	25.	Prorations	35
	 	 	 
	26.	Rules and Regulations	35
	 	 	 
	27.	Subordination	36
	 	 	 
	28.	Surrender	36
	 	 	 
	29.	Waiver of Jury Trial	37
	 	 	 
	30.	Environmental Requirements	38
	 	 	 
	31.	Tenant's Remedies/Limitation of Liability	41
	 	 	 
	32.	Inspection and Access	42
	 	 	 
	33.	Security	42
	 	 	 
	34.	Force Majeure	43
	 	 	 
	35.	Brokers	43
	 	 	 
	36.	Limitation on Landlord's Liability	43
	 	 	 
	37.	Severability	44
	 	 	 
	38.	Signs; Exterior Appearance	44
	 	 	 
	39.	Intentionally Omitted	44
	 	 	 
	40.	Miscellaneous	44
	 	 	 
	1.0	Introduction	F-3
	 	 	 
	2.0	Equipment	F-5
	 	 	 
	1.	Landlord’s Work	H-1
	 	 	 
	2.	Tenant’s Work	H-1
	 	 	 
	3.	Cost of Tenant’s Work	H-2
	 	 	 
	4.	Access By Tenant; Work in Harmony	H-3
	 	 	 
	5.	Construction Requirements	H-4
	 	 	 
	6.	Miscellaneous	H-5

 

    	 	3	 

     

    

 

LEASE AGREEMENT

 

THIS LEASE AGREEMENT (this "Lease")
is made as of the ____ day of October, 2017 between WCS - 377 Plantation Street, Inc., a Massachusetts nonprofit corporation ("Landlord"),
and Mustang Bio, Inc., a Delaware corporation ("Tenant").

 

	Address:	
        377 Plantation Street, Worcester, Massachusetts

         

	Premises:	
        That portion of the Property located on the first floor, as
        shown on Exhibit A, containing approximately 27,043 rentable square feet, as determined by Landlord.

         

	Property:	
        The real property including the building (the "Building")
in which the Premises are located, together with all improvements thereon and appurtenances thereto as described on Exhibit
B. 

 

	Base Rent	 	Lease Year:	 	Annual Base

 Rent:	 	 	Payable in 

following 

Monthly 

Installments:	 
	 	 	1	 	$	419,166.50	 	 	$	34,930.54	 
	 	 	2	 	$	432,688.00	 	 	$	36,057.33	 
	 	 	3	 	$	446,209.50	 	 	$	37,184.13	 
	 	 	4	 	$	459,731.00	 	 	$	38,310.92	 
	 	 	5	 	$	473,252.50	 	 	$	39,437.71	 
	 	 	6	 	$	486,774.00	 	 	$	40,564.50	 
	 	 	7	 	$	500,295.50	 	 	$	41,691.29	 
	 	 	8	 	$	513,817.00	 	 	$	42,818.08	 
	 	 	9	 	$	527,338.50	 	 	$	43,944.88	 

 

	 	
        Provided there is no Default under the Lease during the Base
        Term, (i) during the first Lease Year, Base Rent shall be fully abated and (ii) during the second Lease Year, 47.41% of Base Rent
        shall be abated.

         

	Rentable Area of Premises	
        27,043 sq. ft. consisting of two parcels: 14,222 square feet
        (“Section A”) and 12,821 square feet (“Section B”) as shown on Exhibit A.

         

	Rentable Area of Property:	91,147 sq. ft.

 

    	 	4	 

     

    

 

	Tenant's Share of Operating Expenses:	
        The Rentable Area of Premises from time to time divided by the
        Rentable Area of Property from time to time, initially being 29.67%, provided, however that Tenant shall not be responsible for
        Tenant’s Share of Operating Expenses until the first day of the seventh month of the first Lease Year, at which time Tenant’s
        Share of Operating Expenses shall be calculated solely including Section A of the Premises and thus will constitute 15.60% (14,222/91,147),
        until the Section B Occupancy Date at which time and thereafter Tenant’s Share of Operating Expenses shall constitute the
        Rentable Area of Premises from time to time divided by the Rentable Area of Property from time to time, currently being 29.67%.

         

	Security Deposit:  	
        $250,000.00 Cash Security Deposit and $500,000 Security
Deposit in the form of a Letter of Credit, which shall be increased to a $1,000,000 Letter of Credit on or before the Section
B Occupancy Date (“Letter of Credit Security Deposit”). The Letter of Credit shall be subject to reduction
as set forth in Section 6.

         

	Base Term:	
        The Base Term shall be for nine (9) years (plus any initial
        partial period should the Commencement Date occur other than on the first day of a month), such term beginning on the Commencement
        Date and ending at the end of the day prior to the ninth anniversary of the Commencement Date, provided that if the Commencement
        Date does not occur on the first day of the month, the Base Term shall expire on the last day of the month in which the ninth anniversary
        of the Commencement Date occurs.

         

	
        Lease Year:

         
	
        The first Lease Year shall be the period commencing on the Commencement
        Date and ending on the day prior to the first anniversary of the Commencement Date, provided that if the Commencement Date does
        not occur on the first day of the month, the first Lease Year shall expire on the last day of the month in which the first anniversary
        of the Commencement Date occurs and each Lease Year thereafter shall commence on the day following the expiration of the previous
        Lease Year and expire on the anniversary of the expiration of the previous Lease Year.

         

	
        Section B Occupancy Date: 

         
	The earlier of (i) the date on which the Tenant commences use of any portion of Section B for the Permitted Use hereunder (as opposed to use of Section B for construction, setting up furniture, fixtures and equipment, conducting inspections and testing, and similar activities needed to prepare for occupancy) and (ii) the first day of the third Lease Year.

 

    	 	5	 

     

    

 

	Permitted Use:	
        Scientific research and development laboratory, related office
        and other related uses consistent with the character of the Property and otherwise in compliance with the provisions of Section
        7 hereof.

         

	 	 
	
        Address for Rent Payment:

         

         

         

         

         

        Landlord's Notice Address:

         

         
	
        WCS – 377 Plantation Street, Inc.

        c/o University of Massachusetts Medical School

        55 Lake Avenue North

        Worcester, MA 01655

        Attn: Bursar’s Office

         

        WCS – 377 Plantation Street, Inc.

        c/o University of Massachusetts Medical School

        55 Lake Avenue North

        Worcester, MA 01655

        Attn: Director of Property Services

         

        With a copy to:

         

        Paul C. Bauer, Esq.

        Bowditch & Dewey, LLP

        200 Crossing Boulevard, Suite 500

        Framingham, Massachusetts 01702

         

	
        Tenant's Notice Address:

         

         
	
        Mustang Bio, Inc.

        Attn: Manuel Litchman, CEO

        2 Gansevoort Street, 9th floor

        New York, NY 10014

         

        With a copy to:

        the Premises

        Attn: Knut Niss, VP, Program Management

         

        With a copy to:

        Wyrick Robbins Yates & Ponton LLP

        4101 Lake Boone Trail, Suite 300

        Raleigh, NC 27607

        Attn: Anna P. McLamb, Esq.

 

The following Exhibits and Addenda are
attached hereto and incorporated herein by this reference:

 

    	 	6	 

     

    

 

EXHIBIT A - PREMISES DESCRIPTION

EXHIBIT B - DESCRIPTION OF PROPERTY

EXHIBIT C - COMMENCEMENT DATE

EXHIBIT D - RULES AND REGULATIONS

EXHIBIT E- TENANT’S PERSONAL PROPERTY

EXHIBIT F - FORM OF SURRENDER PLAN

EXHIBIT G – RESERVED PARKING

EXHIBIT H – WORK LETTER

EXHIBIT I – HAZARDOUS MATERIALS LIST

 

1.           Lease
of Premises. Upon and subject to all of the terms and conditions hereof, Landlord hereby leases the Premises to Tenant and
Tenant hereby leases the Premises from Landlord. The portions of the Property which are for the non-exclusive use of tenants of
the Property are collectively referred to herein as the "Common Areas." Landlord reserves the right to modify
Common Areas, provided that such modifications do not materially adversely affect Tenant's use of the Premises for the Permitted
Use, Tenant’s access to the Premises, or Tenant’s usage of reserved parking.

 

2.           Delivery;
Acceptance of Premises; Commencement Date; Extension Option.

 

(a)          Premises
Delivery. Landlord shall deliver ("Delivery" or "Deliver") the Premises to Tenant on or
about November 1, 2017. The "Commencement Date" shall be the date Landlord Delivers the Premises to Tenant. The
"Rent Commencement Date" shall be the Commencement Date, subject to the rent abatement set forth in the definition
of Base Rent set forth above. Upon request of Landlord, Tenant shall execute and deliver a written acknowledgment of the Commencement
Date, the Rent Commencement Date, the expiration date of the Term and the Section B Occupancy Date when such are established,
in the form of the "Acknowledgement of Commencement Date" attached to this Lease as Exhibit C; provided,
however, Tenant's failure to execute and deliver such acknowledgment shall not affect Landlord's rights hereunder. The "Term"
of this Lease shall be the Base Term, as defined above on the first page of this Lease, together with any Extension Term that
comes into effect in accordance with this Lease.

 

(b)          As
Is Condition. Except as set forth in this Lease: (i) Tenant shall accept the Premises in their "as-is" condition
as of the Commencement Date, subject to all applicable Legal Requirements (as defined in Section 7 hereof); (ii) Landlord shall
have no obligation for any defects in the Premises; and (iii) Tenant's taking possession of the Premises shall be conclusive evidence
that Tenant accepts the Premises and that the Premises were in good condition at the time possession was taken. Any occupancy
of the Premises by Tenant before the Commencement Date shall be subject to all of the terms and conditions of this Lease, excluding
the obligation to pay Base Rent and Operating Expenses. Tenant shall undertake Tenant’s Work to prepare the Premises for
occupancy pursuant to and in accordance with Section 12 and Exhibit H. 

 

    	 	7	 

     

    

 

(c)          Complete
Agreement. Tenant agrees and acknowledges that neither Landlord nor any agent of Landlord has made any representation or warranty
with respect to the condition of all or any portion of the Premises or the Property, and/or the suitability of the Premises or
the Property for the conduct of Tenant's business, and Tenant waives any implied warranty that the Premises or the Property are
suitable for the Permitted Use. This Lease constitutes the complete agreement of Landlord and Tenant with respect to the subject
matter hereof and supersedes any and all prior representations, inducements, promises, agreements, understandings and negotiations
which are not contained herein. Landlord in executing this Lease does so in reliance upon Tenant's representations, warranties,
acknowledgments and agreements contained herein.

 

(d)          Extension
Option. Provided Tenant is not in Default under this Lease at the time of notice or commencement of the Extension Term, has
not Defaulted more than three times during the Term or first Extension Term, as the case may be, and occupies at least 75% of
the Premises, Tenant shall have the option to extend the Lease (each, an “Extension Option”) beyond the expiration
of the Term for two (2) additional periods (each an “Extension Term”) consisting of five (5) years each by
providing written notice to Landlord not earlier than 15 months nor later than 12 months prior to the expiration of the Term or
the first Extension Term, as the case may be; provided, however, Tenant shall have no further right to extend the Lease. In the
event Tenant does not exercise an option to extend it shall have no further extension options. Any extension of the Lease for
an Extension Term shall be upon the same terms and conditions set forth in the Lease, except that commencing on the first day
of the first Extension Term, Base Rent shall be payable at the at the Market Rate (as defined below). Base Rent shall thereafter
be adjusted on the annual anniversary of the commencement of such Extension Term by a percentage as determined by Landlord and
agreed to by Tenant at the time the Market Rate is determined (the “Escalation Rate”). As used herein, "Market
Rate" shall mean the higher of (i) 95% of the then market rental rate in Worcester, Massachusetts, taking into account
all relevant factors including comparable building age, condition, type of use, level of finish and proximity to amenities, as
well as length of lease term and any concessions, allowances or other incentives provided to tenants in comparable space as determined
by Landlord and agreed to by Tenant or (ii) the Base Rent in effect in the last year of the Term (or first Extension Term with
respect to Base Rent for the second Extension Term).

 

If Tenant, in a notice to Landlord sent no sooner than fifteen
(15) months prior to the scheduled expiration of the Term, requests that Landlord confirm the Market Rate and Escalation Rate that
would apply during the upcoming Extension Term, Landlord shall confirm Market Rate and Escalation Rate in a responsive notice to
Tenant (the “Advance Market Confirmation”) within fifteen (15) business days. Any delay of Landlord beyond fifteen
(15) business days in sending the Advance Market Confirmation to Tenant shall reduce the period prior to scheduled expiration of
the Term in which Tenant has to exercise the Extension Option (e.g., if Landlord takes 7 days beyond the fifteen business days
to deliver its Advance Market Confirmation to Tenant, then Tenant shall be able to give Landlord notice of exercise of the Extension
Option until the day that is 7 days after the end of the twelfth month before the scheduled expiration of the Term).

 

If, on or before the date which is 270 days prior to the expiration
of the Base Term of this Lease, Tenant has not agreed with Landlord's determination of the Market Rate and the rent escalations
during the Extension Term, if Tenant does not by such date notify Landlord of Tenant’s rescission of its exercise of the
Extension Option, then Tenant shall be deemed to have elected arbitration as described below. If Tenant timely provides such notice
of rescission, the Extension Option shall be rescinded and of no further force or effect.

 

    	 	8	 

     

    

 

(i) Within 10 business days of Tenant's notice to Landlord of
its election (or deemed election) to arbitrate the Market Rate and the Escalation Rate, each party shall deliver to the other a
proposal containing the Market Rate and the Escalation Rate that the submitting party believes to be correct ("Extension
Proposal"). If either party fails to timely submit an Extension Proposal, the other party's submitted proposal shall determine
the Base Rent and escalations for the Extension Term. If both parties submit Extension Proposals, then Landlord and Tenant shall
meet within 7 days after delivery of the last Extension Proposal and make a good faith attempt to mutually appoint a single Arbitrator
(and defined below) to determine the Market Rate and escalations. If Landlord and Tenant are unable to agree upon a single Arbitrator,
then each shall, by written notice delivered to the other within 10 business days after the meeting, select an Arbitrator. If either
party fails to timely give notice of its selection for an Arbitrator, the other party's submitted Extension Proposal shall determine
the Market Rate and the Escalation Rate for the Extension Term. The 2 Arbitrators so appointed shall, within 5 business days after
their appointment, appoint a third Arbitrator. If the 2 Arbitrators so selected cannot agree on the selection of the third Arbitrator
within the time above specified, then either party, on behalf of both parties, may request such appointment of such third Arbitrator
by application to any state court of general jurisdiction in the jurisdiction in which the Premises are located, upon 10 business
days’ prior written notice to the other party of such intent.

 

(ii) The decision of the Arbitrator(s) on the appropriate Extension
Proposal shall be made within 30 days after the appointment of a single Arbitrator or the third Arbitrator, as applicable. If only
one Arbitrator is appointed, the decision of the single Arbitrator shall be final and binding upon the parties. The average of
the two closest Arbitrators in a three Arbitrator panel shall be final and binding upon the parties. Each party shall pay the fees
and expenses of the Arbitrator appointed by or on behalf of such party and the fees and expenses of the third Arbitrator shall
be borne equally by both parties. If the Market Rate and the Escalation Rate are not determined by the first day of the Extension
Term, then Tenant shall pay Landlord Base Rent in an amount equal to the Base Rent in effect immediately prior to the Extension
Term, increased by $0.50 per rentable square foot per annum, until such determination is made. After the determination of the Market
Rate and the Escalation Rate, the parties shall make any necessary adjustments to such payments made by Tenant. Landlord and Tenant
shall then execute an amendment recognizing the Market Rate and escalations for the Extension Term.

 

(iii) An "Arbitrator" shall be any person appointed
by or on behalf of either party or appointed pursuant to the provisions hereof and: (i) shall be (A) a member of the American Institute
of Real Estate Appraisers with not less than 10 years of experience in the appraisal of improved office and high tech industrial
real estate in the greater Worcester metropolitan area, or (B) a licensed commercial real estate broker with not less than 15 years’
experience representing landlords and/or tenants in the leasing of high tech or life sciences space in the greater Worcester metropolitan
area, (ii) devoting substantially all of their time to professional appraisal or brokerage work, as applicable, at the time of
appointment and (iii) be in all respects impartial and disinterested.

 

    	 	9	 

     

    

 

The Extension Right is personal to Tenant and is not assignable
without Landlord's consent, which may be granted or withheld in Landlord's sole discretion separate and apart from any consent
by Landlord to an assignment of Tenant's interest in the Lease.

 

Notwithstanding anything set forth above to the contrary, the
Extension Right shall not be in effect and Tenant may not exercise the Extension Right:

 

(i) during any period of time that Tenant is in Default under
any provision of this Lease; or

 

(ii) if Tenant has been in Default under any provision of this
Lease 3 or more times, whether or not the Defaults are cured, during the 12 month period immediately prior to the date that Tenant
intends to exercise the Extension Right, whether or not the Defaults are cured.

 

The period of time within which the Extension Right may be exercised
shall not be extended or enlarged by reason of Tenant's inability to exercise the Extension Right. The Extension Right shall terminate
and be of no further force or effect even after Tenant's due and timely exercise of the Extension Right, if, after such exercise,
but prior to the commencement date of the Extension Term, (i) Tenant fails to timely cure any Default by Tenant under this Lease;
or (ii) Tenant has Defaulted 3 or more times during the period from the date of the exercise of the Extension Right to the date
of the commencement of the Extension Term, whether or not such Defaults are cured.

 

3.           Rent.

 

(a)          Base
Rent. The Security Deposit shall be due and payable on delivery of an executed copy of this Lease to Landlord. Tenant shall
pay to Landlord in advance, without demand, abatement, deduction or set-off, equal monthly installments of Base Rent on or before
the first day of each calendar month during the Term hereof after the Rent Commencement Date, in lawful money of the United States
of America , at the office of Landlord for payment of Rent set forth above, or to such other person or at such other place as
Landlord may from time to time designate in writing.; provided, however, that the installment of Rent that is payable on the Rent
Commencement Date shall not be overdue if paid by Tenant within five (5) business days of the Rent Commencement Date. Payments
of Base Rent for any fractional calendar month shall be prorated. The obligation of Tenant to pay Base Rent and other sums to
Landlord and the obligations of Landlord under this Lease are independent obligations. Tenant shall have no right at any time
to abate, reduce, or set-off any Rent (as defined in Section 5) due hereunder except for those abatement rights that are
expressly provided in this Lease.

 

(b)          Additional
Rent. In addition to Base Rent, Tenant agrees to pay to Landlord as additional rent ("Additional Rent"):
(i) Tenant's Share of "Operating Expenses" (as defined in Section 5), and (ii) any and all other amounts Tenant
assumes or agrees to pay under the provisions of this Lease, including, without limitation, any and all other sums that may become
due by reason of any default of Tenant or failure to comply with the agreements, terms, covenants and conditions of this Lease
to be performed by Tenant, after any applicable notice and cure period.

 

4.           Intentionally
Omitted.

 

    	 	10	 

     

    

 

5.           Operating
Expense Payments. Landlord shall deliver to Tenant a written estimate of Operating Expenses for each calendar year during
the Term (the "Annual Estimate"), which may be revised by Landlord from time to time during such calendar year.
Commencing on the Rent Commencement Date and continuing thereafter on the first day of each month during the Term, Tenant shall
pay Landlord an amount equal to 1/12th of Tenant's Share of the Annual Estimate. Payments for any fractional calendar month shall
be prorated.

 

The term "Operating Expenses" means all costs and
expenses of any kind or description whatsoever incurred or accrued each calendar year by Landlord with respect to the Property
and the Generator (including, without duplication, Taxes (as defined in Section 9), reasonable reserves consistent with good business
practice for future repairs and replacements, and the costs of Landlord's third party property manager (provided that Tenant’s
Share of such property management costs shall not exceed 5.0% of Base Rent) or, if there is no third party property manager, administration
rent in the amount of 5.0% of Base Rent), excluding only:

 

(a)          the
original construction costs of the Property and renovation prior to the date of the Lease, costs of correcting defects in such
original construction or renovation and costs of any improvements made to the Property for purposes of compliance with Legal Requirements
to the extent such Legal Requirements exist as of the date hereof or insurance requirements because of another tenant at the Property
or such tenant’s use of the Property;

 

(b)          interest
and principal payments under any Mortgage (as defined in Section 27) or other debts of Landlord, financing costs and amortization
of funds borrowed by Landlord, whether secured or unsecured, and any rent payable under any ground lease pertaining to the Property
or under any leases of base building equipment for the Building such as HVAC or elevator;

 

(c)          depreciation
of the Property (except for those capital improvements, for which the costs are not excluded from Operating Expenses as provided
below);

 

(d)          advertising,
legal and space planning expenses and leasing commissions and other costs and expenses incurred in procuring and leasing space
to tenants for the Property, including any leasing office maintained in the Property, free rent, construction allowances and other
concessions for such tenants;

 

(e)          legal,
accounting, administrative and other expenses incurred in the purchase, financing or refinancing of the Property or related to
the operation of Landlord or its affiliates as entities to the extent not related to the operation and maintenance of the Property;

 

(f)          completing,
fixturing, improving, renovating, painting, redecorating or other work, which Landlord pays for or performs for other tenants within
their premises, and costs of correcting defects in such work as well as the cost of furnishing services to any tenant materially
in excess of Building standard services provided to tenants;

 

(g)          costs
to the extent reimbursed by other tenants of the Property or Taxes to be paid directly by Tenant or other tenants of the Property

 

    	 	11	 

     

    

 

(h)          costs
(including attorneys' fees and costs of settlement, judgments and payments in lieu thereof) incurred in connection with disputes
with tenants, other occupants, or prospective tenants, and costs and expenses, including legal fees, incurred in connection with
negotiations or disputes with employees, consultants, management agents, leasing agents, purchasers or mortgagees of the Building;

 

(i)           costs
incurred by Landlord (i) for the benefit of any particular tenant in the Building but not for the benefit of all tenants in the
Building, or (ii) due to the violation by Landlord, its employees, agents or contractors or any tenant of the terms and conditions
of any lease of space in the Property or any Legal Requirement (as defined in Section 7);

 

(j)           penalties,
fines or interest incurred as a result of Landlord's failure to make payment of Taxes and/or to file any tax or informational returns
when due, or from Landlord's failure to make any payment of Taxes, or any other payment obligation of Landlord, required to be
made by Landlord hereunder before delinquency;

 

(k)          net
income taxes of Landlord or the owner of any interest in the Property, franchise, capital stock, gift, estate or inheritance taxes
or any federal, state or local documentary taxes imposed against the Property or any portion thereof or interest therein;

 

(l)           any
expenses otherwise includable within Operating Expenses to the extent actually reimbursed by persons other than tenants of the
Property under leases for space in the Property, including, without limitation, reimbursements from insurance proceeds, condemnation
awards, warranties and rebates; and

 

(m)          costs
for capital equipment and capital expenditures unless the same are (x) incurred to comply with laws or other governmental requirements
that only become applicable to the Property after the Effective Date, (y) incurred to achieve savings or reductions in other Operating
Expenses, or (z) incurred to make a replacement or capital repair with respect to any equipment or component with respect to which
Landlord reasonably determines that repairs are no longer commercially reasonable.

 

Within 90 days after
the end of each calendar year (or such longer period as may be reasonably required), Landlord shall furnish to Tenant a statement
(an "Annual Statement") showing in reasonable detail: (a) the total and Tenant's Share of actual Operating Expenses
for the previous calendar year, and (b) the total of Tenant's payments in respect of Operating Expenses for such year. If Tenant's
Share of actual Operating Expenses for such year exceeds Tenant's payments of Operating Expenses for such year, the excess shall
be due and payable by Tenant as Rent within 30 days after delivery of such Annual Statement to Tenant. If Tenant's payments of
Operating Expenses for such year exceed Tenant's Share of actual Operating Expenses for such year Landlord shall pay the excess
to Tenant within 30 days after delivery of such Annual Statement, except that after the expiration, or earlier termination of the
Term or if Tenant is delinquent in its obligation to pay Rent, Landlord shall pay the excess to Tenant after deducting all other
amounts due Landlord. Landlord shall reasonably attempt to deliver an Annual Statement by June 1 of the year following the year
to which such Annual Statement pertains. If Landlord shall failure to so deliver an Annual Statement to Tenant by August 1 of the
year following the year to which such Annual Statement pertains, then Landlord shall be deemed to have waived Landlord’s
rights to payment, if any, from Tenant for such year.

 

    	 	12	 

     

    

 

The Annual Statement
shall be final and binding upon Tenant unless Tenant, within 60 days after Tenant's receipt thereof, shall contest any item therein
by giving written notice to Landlord, specifying each item contested and the reason therefor. Operating Expenses for the calendar
years in which Tenant's obligation to share therein begins and ends shall be prorated. Any such contest by Tenant shall be based
upon review of the Annual Statement by a certified public accountant engaged by Tenant (“Tenant’s CPA”).
Tenant’s CPA shall not be compensated on a contingency basis, in whole or in part, will not in any manner solicit or agree
to represent any other tenant of the Property for an audit or other review of Operating Expenses or an Annual Statement, shall
maintain in strict confidence any and all information obtained in connection with its review of the Annual Statement and Operating
Expenses, and shall not disclose that information to any person or entity other than to the ownership and management of Tenant
and Landlord. Notwithstanding anything set forth herein to the contrary, if the Property is not at least 95% occupied on average
during any year of the Term, Tenant's Share of Operating Expenses for such year shall be computed as though the Property had been
95% occupied on average during such year; provided, however, that (i) Landlord shall disclose in writing to Tenant if any such
adjustment is made, and (ii) no such adjustment shall result in Landlord receiving payments for Operating Expenses in excess of
the amounts incurred by Landlord for Operating Expenses. [

 

"Tenant's Share"
shall be the percentage set forth on the first page of this Lease as Tenant's Share as reasonably adjusted by Landlord for changes
in the physical size of the Premises or the Property occurring thereafter Base Rent, Tenant's Share of Operating Expenses and all
other amounts payable by Tenant to Landlord hereunder are collectively referred to herein as "Rent."

 

    	 	13	 

     

    

 

6.           Security
Deposit. As security for the performance of all of Tenant’s obligations hereunder, Tenant shall deposit with Landlord,
upon delivery of an executed copy of this Lease to Landlord, (a) a security deposit (the "Security Deposit")
in the amounts set forth in the defined terms of this Lease, which Security Deposit shall, as described in the defined terms,
be in the form of cash and an unconditional and irrevocable letter of credit (the "Letter of Credit"): (i) in
form and substance satisfactory to Landlord, (ii) naming Landlord as beneficiary, (iii) expressly allowing Landlord to draw upon
it at any time from time to time by delivering to the issuer notice that Landlord is entitled to draw thereunder, (iv) issued
by an FDIC-insured financial institution satisfactory to Landlord, and (v) redeemable by presentation of a sight draft in the
state of Landlord's choice. If Tenant does not provide Landlord with a substitute Letter of Credit complying with all of the requirements
hereof at least 10 days before the stated expiration date of any then current Letter of Credit, Landlord shall have the right
to draw the full amount of the current Letter of Credit and hold the funds drawn in cash without obligation for interest thereon
as the Security Deposit. The Security Deposit shall be held by Landlord as security for the performance of Tenant's obligations
under this Lease. The Security Deposit is not an advance rental deposit or a measure of Landlord's damages in case of Tenant's
default. Upon each occurrence of a Default (as defined in Section 20), Landlord may use all or any part of the Security
Deposit to pay delinquent payments due under this Lease, future rent damages provided in this Lease as they come due, and the
cost of any damage, injury, expense or liability caused by such Default, without prejudice to any other remedy provided herein
or provided by law. Landlord's right to use the Security Deposit under this Section 6 includes the right to use the Security
Deposit to pay future rent damages following the termination of this Lease pursuant to Section 21(c) below. Upon any use
of all or any portion of the Security Deposit, Tenant shall pay Landlord on demand the amount that will restore the Security Deposit
to the amount set forth on Page 1 of this Lease. Tenant hereby waives the provisions of any law, now or hereafter in force which
provide that Landlord may claim from a security deposit only those sums reasonably necessary to remedy defaults in the payment
of Rent, to repair damage caused by Tenant or to clean the Premises, it being agreed that Landlord may, in addition, claim those
sums reasonably necessary to compensate Landlord for any other loss or damage, foreseeable or unforeseeable, caused by the act
or omission of Tenant or any officer, employee, agent or invitee of Tenant, as long as the same also constitutes a Default under
this Lease. Upon bankruptcy or other debtor-creditor proceedings against Tenant, the Security Deposit shall be deemed to be applied
first to the payment of Rent and other charges due Landlord for periods prior to the filing of such proceedings. Upon any such
use of all or any portion of the Security Deposit, Tenant shall, within 5 days after demand from Landlord, restore the Security
Deposit to its original amount. If Tenant shall fully perform every provision of this Lease to be performed by Tenant, the Security
Deposit, or any balance thereof (i.e., after deducting therefrom all amounts to which Landlord is entitled under the provisions
of this Lease), shall be returned to Tenant (or, at Landlord's option, to the last assignee of Tenant's interest hereunder) within
30 days after the expiration or earlier termination of this Lease.

 

If Landlord transfers
its interest in the Property or this Lease, Landlord shall transfer any Security Deposit then held by Landlord to a person or entity
assuming Landlord's obligations under this Section 6. Only upon such transfer to such transferee, shall Landlord have no
further obligation with respect to the Security Deposit, and Tenant's right to the return of the Security Deposit shall apply solely
against Landlord's transferee. The Security Deposit is not an advance rental deposit or a measure of Landlord's damages in case
of Tenant's default. Landlord's obligation respecting the Security Deposit is that of a debtor, not a trustee, and no interest
shall accrue thereon.

 

The Letter of Credit
Security Deposit shall be subject to adjustment as follows:

 

(i) If, after
the expiration of the fifth Lease Year, Tenant is not then in Default under this Lease, has not been in Default more than twice
during the Term, and the Landlord has not drawn on the Letter of Credit Security Deposit, then the Letter of Credit Security Deposit
shall be reduced to $750,000.00 either by amendment or replacement of the Letter of Credit).

 

(ii) If,
after the expiration of the sixth Lease Year, Tenant is not then in Default under this Lease, has not been in Default more than
twice during the Term, and the Landlord has not drawn on the Letter of Credit Security Deposit, then the Letter of Credit Security
Deposit shall be reduced to $375,000.00 either by amendment or replacement of the Letter of Credit).

 

(iii) If,
after the expiration of the seventh Lease Year, Tenant is not then in Default under this Lease, has not been in Default more than
twice during the Term, and the Landlord has not drawn on the Letter of Credit Security Deposit, then the Letter of Credit Security
Deposit shall be released and cancelled.

 

    	 	14	 

     

    

 

7.           Use.

 

(a)          Permitted
Use. The Premises shall be used solely for the Permitted Use set forth in the basic lease provisions on page 1 of this Lease,
and in compliance with all laws, orders, judgments, ordinances, regulations, codes, directives, permits, licenses, covenants and
restrictions now or hereafter applicable to the Premises, and to the use and occupancy thereof, including, without limitation,
the Americans With Disabilities Act, 42 U.S.C. § 12101, et seq. (together with the regulations promulgated pursuant thereto,
"ADA") (collectively, "Legal Requirements" and each, a "Legal Requirement").
Except as provided herein, Landlord shall be responsible for compliance of those portions of the Property not then leased to Tenant
or other parties other than Landlord or Landlord’s affiliates, including but not limited to common areas, with Legal Requirements.
Tenant shall, upon 5 days' written notice from Landlord, discontinue any use of the Premises which is declared by any Governmental
Authority (as defined in Section 9) having jurisdiction to be a violation of a Legal Requirement. Tenant will not use or
permit the Premises to be used for any purpose or in any manner that would void Tenant's or Landlord's insurance, increase the
insurance risk, or cause the disallowance of any sprinkler or other credits, it being acknowledged that use of the Premises for
the Permitted Use shall not be prohibited or impaired hereby. Tenant shall not permit any part of the Premises to be used as a
"place of public accommodation", as defined in the ADA or any similar legal requirement. Tenant shall reimburse Landlord
promptly upon demand for any additional premium charged for any such insurance policy by reason of Tenant's failure to comply
with the provisions of this Section or otherwise caused by Tenant's use and/or occupancy of the Premises for any use or purpose
other than the Permitted Use. Tenant will use the Premises in a careful, safe and proper manner and will not commit or permit
waste, overload the floor or structure of the Premises, subject the Premises to use that would damage the Premises or obstruct
or interfere with the rights of Landlord or other tenants or occupants of the Property, including conducting or giving notice
of any auction, liquidation, or going out of business sale on the Premises, or using or allowing the Premises to be used for any
unlawful purpose. Tenant shall cause any equipment or machinery to be installed in the Premises so as to reasonably prevent or
mitigate sounds or vibrations from the Premises from extending into Common Areas, or other occupied space in the Property. Tenant
shall not transport or move any machinery or equipment weighing 500 pounds or more through the Common Areas of the Property or
in the Property elevators without the prior written consent of Landlord, not to be unreasonably withheld, conditioned or delayed.
Tenant shall not exceed Building floor load limits within the Premises or Building. Except as the same may be accommodated by
Tenant’s Work or other approved Alterations to the Premises, Tenant shall not, without the prior written consent of Landlord,
use the Premises in any manner which will require ventilation, air exchange, heating, gas, steam, electricity or water beyond
the existing capacity of the Property as proportionately allocated to the Premises based upon Tenant's Share as usually furnished
for the Permitted Use. Subject to security protocols established by Landlord from time to time for the Building and other express
provisions of this Lease, Tenant will have access to the Building, Common Areas and the Premises 24 hours a day, 7 days a week
and 365/366 days a year.

 

    	 	15	 

     

    

 

(b)           Legal
Requirements. Tenant, at its sole expense, shall make any alterations or modifications to the interior or the exterior of
the Premises or the Property that are required by Legal Requirements (including, without limitation, compliance of the Premises
with the ADA), related to Tenant's particular use or occupancy of the Premises or required as part of any Alterations. Landlord
shall be responsible for any such alterations or modifications to the extent they arise out of use or occupancy of, or alterations
to, the Property made by or for Landlord or other tenants or prospective tenants at the Property (other than Tenant). Notwithstanding
any other provision herein to the contrary, Tenant shall be responsible for any and all demands, claims, liabilities, losses,
costs, expenses, actions, causes of action, damages or judgments, and all reasonable expenses incurred in investigating or resisting
the same (including, without limitation, reasonable attorneys' fees, charges and disbursements and costs of suit) (collectively,
"Claims") arising out of or in connection with Legal Requirements that are related to Tenant's particular use
or occupancy of the Premises, and Tenant shall indemnify, defend, hold and save Landlord harmless from and against any and all
Claims arising out of or in connection with any failure of the Premises to comply with any such Legal Requirement except to the
extent such compliance is expressly Landlord’s responsibility under this Lease.

 

(c)           Emergency
Generator.

 

(i)          Tenant
shall have the right to use on a shared basis in common with other tenants and occupants of the Property the emergency standby
generator (“Generator”) at the Property in the event of a power outage. Tenant’s use of the Generator
shall not exceed 30 kW. Without limiting the generality of the foregoing or any other term or provision of this Lease, Tenant,
in its use of the Generator, shall comply with all permits with respect to the Generator and all Environmental Laws and other Legal
Requirements. Tenant shall indemnify and hold Landlord harmless from and against any and all claims of any kind or nature to the
extent related to the use of the Generator by Tenant or any other Tenant Party.

 

(ii)         Landlord
shall have no obligation or liability to Tenant on account of, or in any way related to, the condition, use or operation of the
Generator nor shall Landlord have any obligation or liability to Tenant or any other party on account of any use or non-use of
or damage to the Generator caused by any other tenant, subtenant, licensee, invitee, agent, servant, contractor or other party
who may, from time to time, make use of the same nor shall Landlord have any obligation to Tenant on account of or in any way related
to any failure of the Generator to comply with Environmental Requirements or other Legal Requirements or, except as specifically
set forth in this Section 7(c), for any failure of the Generator to function or operate in any particular manner. While the Generator
installed at the Property as of the Effective Date may meet National Fire Protection Association (“NFPA”) Life
Safety Code requirements, Landlord makes no warranty or representation as to such compliance and shall not be responsible for maintaining
the Generator or any additional or replacement Generator in compliance with such requirements. In the event Tenant requires generator
capacity that is NFPA Life Safety Code compliant, Tenant shall be solely responsible for ensuring such compliance or obtaining
generator capacity that is so compliant, all at Tenant’s sole cost and expense. If replacement of the Generator is appropriate
in Landlord’s judgment, Landlord shall replace the Generator with one having capacity sufficient to allow Tenant 30 kW of
usage.

 

    	 	16	 

     

    

 

(iii)        Tenant
shall be solely responsible for all costs and expenses which Landlord may suffer or incur or pay on account of or in any way related
to the use of Generator by Tenant or any Tenant Party (including, without limitation, any damage caused to the Generator).

 

(iv)        All
costs and expenses incurred by Landlord from time to time to maintain and repair the Generator shall be included in Operating Expenses.
Notwithstanding the foregoing to the contrary, Tenant shall be responsible for one hundred (100%) percent of the Generator expenses
that are attributable to any (a) damage caused to the Generator by Tenant or any Tenant Party, (b) any failure of Tenant or any
Tenant Party to comply with Legal Requirements related to the Generator and all such costs and expenses shall be due and payable
as Additional Rent within fifteen (15) days after being billed by Landlord.

 

(v)         Landlord
shall be responsible for maintenance, repair and replacement of the Generator but in no event shall Landlord be responsible for
any maintenance, repair or replacement of the Generator to the extent the need therefor is caused by any failure of Tenant or any
Tenant Party to observe, perform and comply with this Lease or by any act or omission of the Tenant or any Tenant Party or by reason
of any damage caused to the Generator by Tenant or any Tenant Party. Without limiting any other term or provision of this Lease
in no event shall Landlord have any obligation or liability to Tenant on account of, or in any way related to, any use, non-use
of, or damage to the Generator nor any failure of the Generator to operate or function caused by any other tenant, subtenant, licensee,
invitee, agent, servant, contractor or other party who may from time to time make use of the same nor on account of any failure
of any such other Tenant, subtenant, licensee, invitee, agent, servant, contractor or other party to comply with Legal Requirements
in any way related to the Generator or the use thereof. In no event shall Landlord have any liability to Tenant for lost revenues,
profits, damage to business or consequential damages on account of, or in any way related to, the failure of Landlord to maintain,
repair or replace the Generator nor for any failure of the Generator to operate or function properly, nor shall Landlord have any
obligation to Tenant on account of or in any way related to any failure of the Generator to comply with Environmental Requirements
or other Legal Requirements.

 

(vi)        Without
limiting any other term or provision of this Lease, Landlord reserves the right to curtail, suspend, interrupt and/or stop use
of the Generator without thereby incurring any liability to Tenant or any Tenant Party when necessary by reason of accident or
emergency, or for repairs, alterations, replacements or improvements in the judgment of Landlord desirable or necessary or when
required in order to comply with Legal Requirements or when use thereof is interrupted, suspended or prevented under Legal Requirements
or by strikes, lockouts, difficulty of obtaining materials, accidents or any other cause beyond Landlord's control or by laws,
orders or inability by exercise of reasonable diligence, to obtain electricity, water, gas, steam, coal, oil or other suitable
fuel or power. No diminution or abatement of rent or other compensation, nor any direct, indirect or consequential damages or claims
for lost profits, or damage to business shall, or will be, claimed by Tenant (or any Tenant Party) as a result of, nor shall this
Lease nor any of the obligations of Tenant or any Tenant Party be affected or reduced by reason of any such interruption, curtailment,
or suspension. Failure or omission on the part of Landlord to maintain, repair or replace the Generator or to comply with Legal
Requirements related to the Generator shall not be construed as an eviction of Tenant, actual or constructive, or, except as noted
in Section 11, entitle Tenant to an abatement of Base Rent, nor to render the Landlord liable in damages, nor release Tenant from
prompt fulfillment of any of its covenants under this Lease.

 

    	 	17	 

     

    

 

(vii)       In
addition, Tenant, at its sole cost, may install its own generator using the concrete pad located adjacent to the Generator. Installation
and wiring shall be pursuant to plans submitted for approval to Landlord, which approval shall not be unreasonably withheld, conditioned
or delayed. Tenant shall be responsible for all repair, maintenance and replacement costs associated with this Tenant-installed
generator. At the end of the term, Tenant shall remove any Tenant-installed generator and all wiring associated with the same and
restore the property on which it was located to its previous condition.

 

8.           Holding
Over. If, with Landlord's express written consent, Tenant retains possession of the Premises after the termination of the
Term, (i) unless otherwise agreed in such written consent, such possession shall be subject to immediate termination by Landlord
at any time, (ii) all of the other terms and provisions of this Lease (including, without limitation, the adjustment of Base Rent
pursuant to Section 4 hereof) shall remain in full force and effect (excluding any expansion or renewal option or other
similar right or option) during such holdover period, (iii) Tenant shall continue to pay Base Rent in the amount payable upon
the date of the expiration or earlier termination of this Lease or such other amount as Landlord may indicate, in Landlord's sole
and absolute discretion, in such written consent, and (iv) all other payments shall continue under the terms of this Lease. If
Tenant remains in possession of the Premises after the expiration or earlier termination of the Term without the express written
consent of Landlord, (A) Tenant shall become a tenant at sufferance upon the terms of this Lease except that the monthly Base
Rent payment shall be equal to 150% of Base Rent in effect during the last 30 days of the Term, and (B) Tenant shall be responsible
for all damages suffered by Landlord resulting from or occasioned by Tenant's holding over, including consequential damages. No
holding over by Tenant, whether with or without consent of Landlord, shall operate to extend this Lease except as otherwise expressly
provided, and this Section 8 shall not be construed as consent for Tenant to retain possession of the Premises. Acceptance
by Landlord of Rent after the expiration of the Term or earlier termination of this Lease shall not result in a renewal or reinstatement
of this Lease.

 

    	 	18	 

     

    

 

9.           Taxes.
Tenant shall pay, as part of Operating Expenses, all taxes, levies, fees, assessments and governmental charges of any kind, existing
as of the Commencement Date or thereafter enacted (collectively referred to as "Taxes"), imposed by any federal,
state, regional, municipal, local or other governmental authority or agency, including, without limitation, quasi-public agencies
(collectively, "Governmental Authority") during the Term, including, without limitation, all Taxes if imposed
in lieu of a tax on Landlord’s income: (i) imposed on or measured by or based, in whole or in part, on rent payable to (or
gross receipts received by) Landlord under this Lease and/or from the rental by Landlord of the Property or any portion thereof,
or (ii) based on the square footage, assessed value or other measure or evaluation of any kind of the Premises or the Property,
or (iii) assessed or imposed by or on the operation or maintenance of any portion of the Premises or the Property, including parking,
or (iv) assessed or imposed by, or at the direction of, or resulting from Legal Requirements, or interpretations thereof, promulgated
by any Governmental Authority, or (v) imposed as a license or other fee, charge, tax, or assessment on Landlord's business or
occupation of leasing space in the Property. Landlord may contest by appropriate legal proceedings the amount, validity, or application
of any Taxes or liens securing Taxes. Taxes shall not include any net income taxes imposed on Landlord except to the extent such
net income taxes are in substitution for any Taxes payable hereunder. If any such Tax is levied or assessed directly against Tenant,
then Tenant shall be responsible for and shall pay the same at such times and in such manner as the taxing authority shall require.
Tenant shall pay, prior to delinquency, any and all Taxes levied or assessed against any personal property or trade fixtures placed
by Tenant in the Premises, whether levied or assessed against Landlord or Tenant. If any Taxes on Tenant's personal property or
trade fixtures are levied against Landlord or Landlord's property, or if the assessed valuation of the Property is increased by
a value attributable to improvements in or alterations to the Premises made after the Commencement Date, whether owned by Landlord
or Tenant and whether or not affixed to the real property so as to become a part thereof, higher than the base valuation on which
Landlord from time-to-time allocates Taxes to all tenants in the Property, Landlord shall have the right, but not the obligation,
to pay such Taxes. The amount of any such payment by Landlord shall constitute Additional Rent due from Tenant to Landlord within
30 days of demand. Notwithstanding anything set forth herein to the contrary, if any portion of the Property is exempt from real
property taxation and the Premises is not exempt from real property taxation, Tenant shall pay its share of such Taxes based on
multiplying the Taxes for Property by a fraction of which the rentable square footage of the Premises is the numerator and the
rentable square footage of the Property that is not exempt from real property taxation is the denominator.

 

10.         Parking.
Subject to all matters of record, Force Majeure, a Taking (as defined in Section 19 below) and the exercise by Landlord of its
rights hereunder, Tenant shall have the right to park in up to 28 parking spaces of which 6 will be reserved, in the location
shown on the site plan attached hereto as Exhibit G, until the Section B Occupancy Date and thereafter 54 parking spaces
of which 12 will be reserved, in the location shown on the site plan attached hereto as Exhibit G, at no additional expense
to the Tenant during the Term of the Lease, subject in each case to Landlord's rules and regulations. Landlord shall not be responsible
for enforcing Tenant's parking rights against any third parties, other than other tenants of the Property. Parking shall be for
licensed, operative motor vehicles only by officers, directors, employees, visitors and contractors of Tenant. No overnight parking
shall be permitted without Landlord’s prior written consent.

 

    	 	19	 

     

    

 

11.         Utilities,
Services. The Building will be operated with twenty-four hour, seven day access, such access to be controlled during non-Business
Hours (as hereinafter defined). Landlord shall provide, subject to the terms and limitations of this Section 11, water,
electricity, heat, chilled water, hot water, electrical, fire protection, light, power, sewer, and other utilities (including
gas and fire sprinklers to the extent the Property is plumbed for such services), refuse and trash collection and janitorial services
(collectively, "Utilities"). Central heat and air conditioning shall be provided during Business Hours in season,
at such temperatures and in such amounts as are provided by Landlord as standard to other tenants of the Building or as may be
controlled by applicable laws, ordinances, rules and regulations or by voluntary conservation programs with which comparable laboratory
and office buildings in the greater Worcester metropolitan area are complying. The term “Business Hours” shall
be deemed to be Monday through Friday from 8:00 A.M. to 6:00 P.M. and Saturday from 8:00 A.M. to 1:00 P.M., excepting Holidays.
The term “Holidays” shall mean all federally observed holidays, including New Year’s Day, President’s
Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day, Christmas Day, and to the extent of utilities or services provided
by union members engaged at the Property, such other holidays observed by such unions. The term “Business Day”
or “business day” shall mean all days other than Holidays, Saturdays and Sundays. Tenant may request heating,
ventilation, air conditioning provided by Landlord to Tenant (i) during hours other than Business Hours, (ii) on Saturdays (after
Business Hours), Sundays, or Holidays, said heating, ventilation and air conditioning or extra service to be furnished solely
upon the prior written request of Tenant given with such advance notice as Landlord may reasonably require and Tenant shall pay
to Landlord Landlord’s standard charge for overtime HVAC on an hourly basis from time to time established by Landlord (the
current standard charge for after-hours heating from November to March is $15.00 per hour, for after-hours cooling from April
through October is $5.00 per hour, in either case with a four hour minimum. Landlord shall pay, as Operating Expenses or subject
to Tenant's reimbursement obligation, for all utilities used on the Premises, all maintenance charges for utilities, and any storm
sewer charges or other similar charges for utilities imposed by any Governmental Authority or utility provider, and any taxes,
penalties, surcharges or similar charges thereon. Landlord may cause, at Tenant's expense, any utilities to be separately metered
or charged directly to Tenant by the provider. Tenant shall pay directly to the utility provider, prior to delinquency, any separately
metered utilities and services which may be furnished to Tenant or the Premises during the Term. Tenant shall pay, as part of
Operating Expenses, its share of all charges for jointly metered utilities based upon consumption, as reasonably determined by
Landlord. No interruption or failure of utilities, from any cause whatsoever other than the negligence or willful misconduct of
Landlord or its officers, directors, employees, managers, agents, invitees and contractors (collectively, "Landlord Parties"),
shall result in eviction or constructive eviction of Tenant, termination of this Lease or the abatement of Rent, provided, however
that, in the event that Landlord is unable to supply any of the Utilities due to the negligence or willful misconduct of a Landlord
Party, and such inability materially impairs Tenant’s ability to carry on the Permitted Use in the Premises for a period
of three (3) consecutive Business Days, Base Rent and Additional Rent shall be abated effective as of the first day of such material
interference with the Permitted Use. Such abatement shall continue until the applicable Utilities have been restored to such extent
that the lack of any remaining services no longer materially impairs Tenant’s ability to carry on the Permitted Use in the
Premises. Tenant shall not be entitled to such an abatement to the extent that Landlord’s inability to supply a Utility
to Tenant is caused by Tenant or Tenant Parties. In the event of any stoppage or interruption of a Utility to the Premises, Landlord
shall use commercially reasonable efforts to restore such Utility to the Premises as soon as possible, which as to restoration
actions in the control of an applicable Utility provider shall only require notice to such provider and reasonable follow up and
shall not require any restoration action by Landlord. Landlord shall promptly notify Tenant of any planned or actual interruption
of Utilities, and shall keep Tenant advised of the status of such restoration efforts. Tenant agrees to limit use of water and
sewer with respect to Common Areas to normal restroom use. Notwithstanding the foregoing, Tenant shall pay directly to the utility
or direct to Landlord for its own electricity usage as measured by a separate electric meter or submeter exclusively serving the
Premises (to be installed by Landlord at its expense as herein provided), including usage for any specialty HVAC equipment for
Tenant’s lab, except during the first six (6) months of the first Lease Year, in which Landlord shall cause such amounts
to be paid. Additionally, but without any duplication of expense, Tenant shall pay Tenant’s Share of any single-meter utilities
that are chargeable hereunder as Operating Expenses and for the equal benefit to all Building tenants. It shall be Landlord’s
sole cost and expense to meter either by meter or submeter promptly, separately both Section A and Section B of the Premises.
Tenant shall commence payment of electricity charges for Section A commencing with the seventh (7th) month of the first
Lease Year and with respect to Section B commencing on the Section B Occupancy Date.

 

    	 	20	 

     

    

 

If required, and subject to Landlord’s
reasonable approval, Tenant shall be allowed to place additional HVAC equipment to serve the Premises outside of the Premises in
a location to be mutually agreed upon by Landlord and Tenant. Installation of such equipment shall constitute an Alteration and
the installation and maintenance of such equipment shall be performed by Tenant’s contractor at Tenant’s sole expense.

 

12.         Alterations
and Tenant’s Property; Tenant’s Work. Tenant’s initial work to prepare the Premises for occupancy (“Tenant’s
Work”) shall constitute Alterations and be constructed by Tenant pursuant to the terms and conditions of Exhibit
H. Any alterations, additions, or improvements made to the Premises by or on behalf of Tenant other than Tenant’s Work,
including additional locks or bolts of any kind or nature upon any doors or windows in the Premises, but excluding installation,
removal or realignment of furniture systems (other than removal of furniture systems owned by Landlord) not involving any modifications
to the structure or connections (other than by ordinary plugs or jacks) to Building Systems (as defined in Section 13)
("Alterations") shall be subject to Landlord's prior written consent, which may be given or withheld in Landlord's
sole discretion if any such Alteration affects the structure or Building Systems and shall not be otherwise unreasonably withheld,
conditioned or delayed. Any request for approval of Alterations shall be in writing, delivered not less than 15 business days
in advance of any proposed construction, and accompanied by plans, specifications, bid proposals, work contracts and such other
information concerning the nature and cost of the Alterations as may be reasonably requested by Landlord, including the identities
and mailing addresses of all persons performing work or supplying materials. Landlord's right to review plans and specifications
and to monitor construction shall be solely for its own benefit, and Landlord shall have no duty to ensure that such plans and
specifications or construction comply with applicable Legal Requirements. Tenant shall cause, at its sole cost and expense, all
Alterations to comply with insurance requirements and with Legal Requirements and shall implement at its sole cost and expense
any alteration or modification required by Legal Requirements as a result of any Alterations. Except with respect to Tenant’s
Work (the terms of which payment from Tenant to Landlord are provided in Section 3.C. of Exhibit H), Tenant shall pay to
Landlord, as Additional Rent, an amount equal to any third-party costs actually incurred by Landlord and reasonable allocated
costs associated with in-house evaluation for plan review, coordination, scheduling and supervision. Before Tenant begins any
Alteration, Landlord may post on and about the Premises notices of non-responsibility pursuant to applicable law. Tenant shall
reimburse Landlord for, and indemnify and hold Landlord harmless from, any expense incurred by Landlord by reason of faulty work
done by Tenant or its contractors, delays caused by such work, or inadequate cleanup, in each case, in connection with an Alteration
by Tenant.

 

    	 	21	 

     

    

 

Tenant shall provide
(and cause each contractor or subcontractor to provide) certificates of insurance for workers' compensation and other coverage
in amounts and from an insurance company satisfactory to Landlord protecting Landlord against liability for personal injury or
property damage during construction. Upon completion of any Alterations, Tenant shall deliver to Landlord: (i) sworn statements
setting forth the names of all contractors and subcontractors who did the work and final lien waivers from all such contractors
and subcontractors; and (ii) "as built" plans for any such Alteration, unless the Alteration did not require the issuance
of a permit from a Governmental Authority.

 

Except for Removable
Installations (as hereinafter defined), all Installations (as hereinafter defined) shall be and shall remain the property of Landlord
during the Term and following the expiration or earlier termination of the Term, shall not be removed by Tenant at any time during
the Term, and shall remain upon and be surrendered with the Premises as a part thereof. Notwithstanding the foregoing, Landlord
may, at the time its approval of any such Installation is requested, notify Tenant that Landlord requires that Tenant remove such
Installation upon the expiration or earlier termination of the Term, in which event Tenant shall remove such Installation in accordance
with the immediately succeeding sentence. Upon the expiration or earlier termination of the Term, Tenant shall remove (i) all wires,
cables or similar equipment which Tenant has installed in the Premises or in the risers or plenums of the Building, (ii) any Installations
for which Landlord has given Tenant notice of removal in accordance with the immediately preceding sentence, and (iii) all of Tenant's
Property (as hereinafter defined), and Tenant shall restore and repair any damage caused by or occasioned as a result of such removal,
including, without limitation, capping off all such connections behind the walls of the Premises and repairing any holes. During
any restoration period beyond the expiration or earlier termination of the Term, Tenant shall pay Rent to Landlord as provided
herein as if said space were otherwise occupied by Tenant. If Landlord is requested by Tenant or any lender, lessor or other person
or entity claiming an interest in any of Tenant's Property to waive any lien Landlord may have against any of Tenant's Property,
and Landlord consents to such waiver, then Landlord shall be entitled to be paid as administrative rent a fee of $1,000 per occurrence
for its time and effort in preparing and negotiating such a waiver of lien.

 

For purposes of this
Lease, (x) "Removable Installations" means any items listed on Exhibit E attached hereto and any items
agreed by Landlord in writing to be characterized as Removable Installations, (y) "Tenant's Property'' means Removable
Installations and, other than Installations, any personal property or equipment of Tenant that may be removed without material
damage to the Premises, and (z) "Installations" means, except to the extent included in Tenant’s Work, all
property of any kind if paid for by Landlord, all Alterations, all fixtures, and all partitions, hardware, built-in machinery,
built-in casework and cabinets and other similar additions, equipment, property and improvements built into the Premises so as
to become an integral part of the Premises, including, without limitation, fume hoods which penetrate the roof or plenum area,
built-in cold rooms, built-in warm rooms, walk-in cold rooms, walk-in warm rooms, deionized water systems, glass washing equipment,
autoclaves, chillers, built-in plumbing, electrical and mechanical equipment and systems, and any power generator and transfer
switch.

 

    	 	22	 

     

    

 

13.         Landlord's
Repairs. Landlord, as an Operating Expense, shall maintain all of the structural, exterior, parking and other Common Areas
of the Property, including the Building foundation, roof, roof system, and exterior walls, exterior windows and doors and the
frames and casing therefor, and HVAC, plumbing, fire sprinklers and other life-safety systems, security systems for the Building,
elevators, the Generator, and all other building systems serving the Premises and other portions of the Property ("Building
Systems") (but excluding therefrom systems solely serving the Premises as listed in Section 14(ii) below), in good repair,
reasonable wear and tear and uninsured losses and damages caused by Tenant, or by any of Tenant's agents, servants, employees,
invitees and contractors (collectively, "Tenant Parties" and each, a "Tenant Party") excluded.
Losses and damages caused by Tenant or any Tenant Party shall be repaired by Landlord, to the extent not covered by insurance,
at Tenant's sole cost and expense. Landlord reserves the right to stop Building Systems services when necessary (i) by reason
of accident or emergency, or (ii) for planned repairs, alterations or improvements, which are, in the judgment of Landlord, desirable
or necessary to be made, until said repairs, alterations or improvements shall have been completed. Landlord shall have no responsibility
or liability for failure to supply Building Systems services during any such period of interruption; provided, however,
that Landlord shall, except in case of emergency, make a commercially reasonable effort to give Tenant 24 hours’ advance
notice of any planned stoppage of Building Systems services for routine maintenance, repairs, alterations or improvements, and,
if reasonably feasible, to conduct any routine maintenance, repairs, alterations or improvements to Building Systems that would
require a stoppage that would materially affect Tenant’s use and enjoyment of the Premises for the Permitted Use after Business
Hours. Tenant shall promptly give Landlord written notice of any repair required by Landlord pursuant to this Section, after which
Landlord shall make a commercially reasonable effort to effect such repair.

 

If Landlord is in default in the performance
of any of its obligations under this Section 13, beyond applicable notice and cure periods, then Tenant shall have the right
to remedy such default on Landlord’s behalf (provided that Tenant uses reasonable efforts to avoid violating or rendering
void any warranties maintained by Landlord), in which event Landlord shall reimburse Tenant within forty five (45) days after invoice
for all reasonable costs and expenses incurred by Tenant in connection therewith. Tenant’s self-help rights under this Section
13 shall be exercised by Tenant only (i) with respect to conditions actually existing within the Premises (and not affecting
the structural components of the Building or systems serving other tenants of the Building), (ii) with respect to conditions that
materially affect Tenant’s ability to use and enjoy the Premises, and (iii) after Tenant has provided Landlord with notice
of Tenant’s intention to exercise such right, and Landlord has failed to commence action to remedy the condition complained
of within ten (10) days after its receipt of such notice (or if Landlord commences to do the act required within such period but
fails to proceed diligently thereafter). Tenant’s remedies under this Section 13 are personal to Tenant and may not
be exercised by any subtenants or assignees (other than an assignee through a Permitted Assignment) against Landlord. Tenant shall
indemnify, save harmless and defend Landlord and its members, managers, officers, mortgagees, agents, employees, independent contractors,
invitees and other persons acting under them from and against all liability, claim or cost (including reasonable attorneys’
fees) arising in whole or in part out of any negligence or willful misconduct in connection with Tenant’s exercise of its
remedies pursuant to this Section 13. Except as provided in the preceding sentence, Tenant waives its rights under any state
or local law to terminate this Lease or to make such repairs at Landlord's expense and agrees that the parties' respective rights
with respect to such matters shall be solely as set forth herein. Repairs required as the result of fire, earthquake, flood, vandalism,
war, or similar cause of damage or destruction shall be controlled by Section 18.

 

    	 	23	 

     

    

 

14.         Tenant's
Repairs. Subject to Section 13 hereof, Tenant, at its expense, (i) shall repair, replace and maintain in good condition
all portions of the Premises, including, without limitation, entries, doors, ceilings, interior windows, interior walls, and the
interior side of demising walls, and (ii) shall bear the cost of maintenance and repair, by contractors reasonably acceptable
to the Landlord (Landlord approval of contractors for HVAC and plumbing in clean rooms as part of Tenant’s Work shall be
deemed approved for repairs to such installations), or, in Landlord’s discretion by Landlord or Landlord’s contractor
on behalf of Tenant at Tenant’s expense (except that Tenant shall not be required to pay expenses that exceed pricing available
in the Worcester, MA area for similar services from third-party vendors), of all facilities which are not expressly required to
be maintained or repaired by Landlord and which are located in the Premises, including, without limitation, lavatory, shower,
toilet, wash basin and kitchen facilities, and supplemental heating and air conditioning systems (including all plumbing connected
to said facilities or systems installed by or on behalf of Tenant or existing in the Premises at the time of Landlord’s
delivery of the Premises to Tenant). Such repair and replacement may include capital expenditures and repairs whose benefit may
extend beyond the Term. Should Tenant fail to make any such repair or replacement or fail to maintain the Premises, Landlord shall
give Tenant notice of such failure. If Tenant fails to commence cure of such failure within 10 days of Landlord's notice, and
thereafter diligently prosecute such cure to completion, Landlord may perform such work and shall be reimbursed by Tenant within
10 days after demand therefor; provided, however, that if such failure by Tenant creates or could create an emergency, Landlord
may immediately commence cure of such failure and shall thereafter be entitled to recover the costs of such cure from Tenant.
Subject to Sections 17 and 18, Tenant shall bear the full uninsured cost of any repair or replacement to any part
of the Property that results from damage caused by Tenant or any Tenant Party.

 

15.         Mechanic's
Liens. Tenant shall discharge, by bond or otherwise, any mechanic's lien filed against the Premises or against the Property
for work validly claimed to have been done for, or materials validly claimed to have been furnished to, Tenant within 30 days
after the filing thereof, at Tenant's sole cost and shall otherwise keep the Premises and the Property free from any liens arising
out of work performed, materials furnished or obligations actually incurred by Tenant. Should Tenant fail to discharge any lien
as required herein, Landlord shall have the right, but not the obligation, to pay such claim or post a bond or otherwise provide
security to eliminate the lien as a claim against title to the Property and the cost thereof shall be immediately due from Tenant
as Additional Rent. If Tenant shall lease or finance the acquisition of office equipment, furnishings, or other personal property
of a removable nature utilized by Tenant in the operation of Tenant's business, Tenant warrants that any Uniform Commercial Code
Financing Statement filed as a matter of public record by any lessor or creditor of Tenant will upon its face or by exhibit thereto
indicate that such Financing Statement is applicable only to removable personal property of Tenant located within the Premises.
In no event shall the address of the Property be furnished on the statement without qualifying language as to applicability of
the lien only to removable personal property, located in an identified suite held by Tenant.

 

    	 	24	 

     

    

 

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

 

17.         Insurance.
Tenant, at its sole cost and expense, shall maintain during the Term: (i) all risk property insurance with business interruption
and extra expense coverage, covering the full replacement cost of all property and improvements installed or placed in the Premises
by Tenant at Tenant's expense, including its laboratory equipment, office furniture, trade fixtures, office equipment, inventory,
merchandise and all other items of Tenant Property, in an amount adequate to cover their replacement cost, including a vandalism
and malicious mischief endorsement, and sprinkler leakage coverage; business interruption insurance, loss of income and extra
expense insurance covering all perils covered by a standard, “Special Form” (as defined from time-to-time by the insurance
industry) property insurance policy; (ii) workers' compensation insurance with no less than the minimum limits required by
law; (iii) employer's liability insurance with such limits as required by law; and (iv) commercial general liability
insurance, with a minimum limit of not less than $3,000,000 per occurrence for bodily injury and property damage with respect
to the Premises. In addition, Tenant shall carry such other coverages, and in such amounts, as are required by Landlord from time
to time, so long as such coverages and amounts are consistent with properties comparable to the Property in the greater Worcester
metropolitan area. The commercial general liability insurance policy shall name Worcester Campus Services, and Landlord and Landlord
Parties as additional insureds; insure on an occurrence and not a claims-made basis; be issued by insurance companies which have
a rating of not less than policyholder rating of A and financial category rating of at least Class X in "Best's Insurance
Guide"; shall not be cancelable for nonpayment of premium unless 30 days prior written notice shall have been given to Landlord
from the insurer; contain a hostile fire endorsement and a contractual liability endorsement; and provide primary coverage to
Landlord (any policy issued to Landlord providing duplicate or similar coverage shall be deemed excess over Tenant's policies).
Certificates of insurance showing the limits of coverage required hereunder and showing Landlord and Property Agent as additional
insureds, along with reasonable evidence of the payment of premiums for the applicable period, shall be delivered to Landlord
by Tenant within three (3) days of the Commencement Date, but in any event prior to Tenant entering the Premises, and upon each
renewal of said insurance. Any of Tenant’s policies may be a "blanket policy" with an aggregate per location endorsement,
which specifically provides that the amount of insurance shall not be prejudiced by other losses covered by the policy. Tenant
shall, at least 5 days prior to the expiration of such policies, furnish Landlord with renewal certificates.

 

    	 	25	 

     

    

 

In each instance where
insurance is to name Landlord as an additional insured, Tenant shall upon written request of Landlord also designate and furnish
certificates so evidencing Landlord as additional insured to: (i) any lender of Landlord holding a security interest in the Property
or any portion thereof, (ii) the landlord under any lease wherein Landlord is tenant of the real property on which the Property
is located, if the interest of Landlord is or shall become that of a tenant under a ground or other underlying lease rather than
that of a fee owner, and/or (iii) any management company retained by Landlord to manage the Property.

 

Landlord shall maintain
the following insurance during the Term either through third party insurance or Commonwealth of Massachusetts self-insurance: (i)
Property insurance for the Building and Property, including the Tenant’s Work, in amounts equal to full replacement cost
(exclusive of the costs of excavation, foundations and footings, engineering costs or such other costs that would not be incurred
in the event of a rebuild and without reference to depreciation taken by Landlord upon its books or tax returns), provided that
such coverage shall not be less than the amount of such insurance Landlord’s Holder, if any, requires Landlord to maintain,
providing protection against any peril generally included within the classification “Fire and Extended Coverage,” together
with insurance against sprinkler damage (if applicable), vandalism and malicious mischief and sprinkler leakage; (ii) Commercial
General Liability insurance with limits of not less than Three Million Dollars ($3,000,000) per occurrence/general aggregate for
bodily injury (including death), or property damage with respect to the Property; and (iii) subject to availability thereof
and if Landlord deems it appropriate, coverage against flood, environmental hazard, earthquake, loss or failure of building equipment,
rental loss during the period of repairs or rebuilding, Workers’ Compensation insurance and fidelity bonds for employees
employed to perform services.

 

Landlord shall maintain
such other liability, property and other insurance coverage as it deems prudent in its sole discretion and all such insurance shall
be included as part of the Operating Expenses. The Property may be included in a blanket policy (in which case the cost of such
insurance allocable to the Property will be determined by Landlord based upon the insurer's cost calculations). Tenant shall also
reimburse Landlord for any increased premiums or additional insurance which Landlord reasonably deems necessary as a result of
Tenant's use of the Premises.

 

The property insurance
obtained by Landlord and Tenant shall include a waiver of subrogation by the insurers and all rights based upon an assignment from
its insured, against Landlord or Tenant, and their respective officers, directors, employees, managers, agents, invitees and contractors
("Related Parties"), in connection with any loss or damage thereby insured against. Neither party nor its respective
Related Parties shall be liable to the other for loss or damage caused by any risk insured against under property insurance required
to be maintained hereunder, and each party waives any claims against the other party, and its respective Related Parties, for such
loss or damage. The failure of a party to insure its property shall not void this waiver. Landlord and its respective Related Parties
shall not be liable for, and Tenant hereby waives all claims against such parties for, business interruption and losses occasioned
thereby sustained by Tenant or any person claiming through Tenant resulting from any accident or occurrence in or upon the Premises
or the Property from any cause whatsoever. If the foregoing waivers shall contravene any law with respect to exculpatory agreements,
the liability of Landlord or Tenant shall be deemed not released but shall be secondary to the other's insurer.

 

    	 	26	 

     

    

 

Landlord may require
insurance policy limits to be raised to conform with requirements of Landlord's lender and/or to bring coverage limits to levels
then being generally required of new tenants within the Property.

 

18.         Restoration.
If, at any time during the Term, the Property or the Premises are damaged or destroyed by a fire or other insured casualty, Landlord
shall notify Tenant as soon as possible but in any event within 60 days after the earlier of notification or discovery of such
damage as to the amount of time Landlord reasonably estimates it will take to restore the Property or the Premises, as applicable
(the "Restoration Period"). If the Restoration Period is estimated to exceed 270 days from the later of receipt
of insurance proceeds and commencement of such work with all required permits therefor (the "Maximum Restoration Period"),
Landlord may, in such notice, elect to terminate this Lease as of the date of such damage or destruction. Unless Landlord so elects
to terminate this Lease, Landlord shall, subject to receipt of sufficient insurance proceeds (with any deductible to be treated
as a current Operating Expense), promptly restore the Premises (excluding the improvements installed by Tenant or by Landlord
and paid for by Tenant), subject to delays arising from the collection of insurance proceeds, from Force Majeure events or as
needed to obtain any license, clearance or other authorization of any kind required to enter into and restore the Premises issued
by any Governmental Authority having jurisdiction over the use, storage, handling, treatment, generation, release, disposal, removal
or remediation of Hazardous Materials (as defined in Section 30) in, on or about the Premises (collectively referred to
herein as "Hazardous Materials Clearances"); provided, however, that if repair or restoration of
the Premises is not substantially complete as of the end of the Maximum Restoration Period or, if longer, the Restoration Period,
Landlord may, in its sole and absolute discretion, by notice to Tenant elect not to proceed with such repair and restoration,
in which event Landlord shall be relieved of its obligation to make such repairs or restoration and this Lease shall terminate
as of the date that is 75 days after the earlier of: (i) discovery of such damage or destruction, or (ii) the date all required
permits, including any Hazardous Materials Clearances, are obtained, and Landlord shall return to Tenant any Rent previously paid
by Tenant for any portion of the Term after the date of such termination.

 

Tenant, at its expense,
shall promptly perform, subject to delays arising from the collection of insurance proceeds, from Force Majeure (as defined in
Section 34) events or to obtain Hazardous Material Clearances, all repairs or restoration not required to be done by Landlord
and shall promptly re-enter the Premises upon Landlord’s completion of the restorations and repairs and issuance of any certificate
of occupancy in connection therewith and commence doing business in accordance with this Lease. Notwithstanding the foregoing,
Landlord or Tenant may terminate this Lease if the Premises are damaged during the last 12 months of the Term and Landlord reasonably
estimates that it will take more than 2 months to repair such damage, or if Landlord is denied its claim for insurance proceeds
for such restoration. Rent shall be abated from the date of the damage or destruction until the Premises are repaired and restored,
in the proportion which the area of the Premises, if any, which is not usable by Tenant bears to the total area of the Premises,
unless Landlord provides Tenant with other comparable space in the Building for the Permitted Use during the period of repair that
is suitable for the temporary conduct of the Permitted Use. The remedies provided to Tenant in this Section 18 shall be
the sole remedies of Tenant, and except as provided in this Section 18, Tenant waives any right to terminate the Lease by
reason of damage or casualty loss.

 

    	 	27	 

     

    

 

The provisions of this
Lease, including this Section 18, constitute an express agreement between Landlord and Tenant with respect to any and all
damage to, or destruction of, all or any part of the Premises, or any other portion of the Property, and any statute or regulation
which is now or may hereafter be in effect shall have no application to this Lease or any damage or destruction to all or any part
of the Premises or any other portion of the Property, the parties hereto expressly agreeing that this Section 18 sets forth
their entire understanding and agreement with respect to such matters.

 

19.         Condemnation.
If the whole or any material part of the Premises or the Property is taken for any public or quasi-public use under governmental
law, ordinance, or regulation, or by right of eminent domain, or by private purchase in lieu thereof (a "Taking"
or "Taken"), and the Taking would in Landlord's reasonable judgment, either prevent or materially interfere with
Tenant's use of the Premises or materially interfere with or impair Landlord's ownership or operation of the Property, then upon
written notice by Landlord this Lease shall terminate and Rent shall be apportioned as of said date. If part of the Premises shall
be Taken, and this Lease is not terminated as provided above, Landlord shall promptly restore the Premises and the Property as
nearly as is commercially reasonable under the circumstances to their condition prior to such partial Taking and the rentable
square footage of the Building, the rentable square footage of the Premises, Tenant's Share of Operating Expenses and the Rent
payable hereunder during the unexpired Term shall be reduced to such extent fair and reasonable under the circumstances. Upon
any such Taking, Landlord shall be entitled to receive the entire price or award from any such Taking without any payment to Tenant,
and Tenant hereby assigns to Landlord Tenant's interest, if any, in such award. Tenant shall have the right, to the extent that
same shall not diminish Landlord's award, to make a separate claim against the condemning authority (but not Landlord) for such
compensation as may be separately awarded or recoverable by Tenant for moving expenses and damage to Tenant's trade fixtures,
if a separate award for such items is made to Tenant. Tenant hereby waives any and all rights it might otherwise have pursuant
to any provision of state law to terminate this Lease upon a partial Taking of the Premises or the Property.

 

20.         Events
of Default. Each of the following events shall be a default ("Default") by Tenant under this Lease:

 

(a)          Payment
Defaults. Tenant shall fail to pay any installment of Rent or any other payment hereunder when due; provided, however,
that for the first two (2) overdue payments in any twelve (12) month period, there shall be no Default unless Tenant shall have
failed to make such overdue payment within five (5) days after receiving written notice of such failure from Landlord.

 

(b)          Insurance.
Any insurance required to be maintained by Tenant pursuant to this Lease shall be canceled or terminated or shall expire or shall
be reduced or materially changed, or Landlord shall receive a notice of nonrenewal of any such insurance and Tenant shall fail
to obtain replacement insurance within 20 days of notice from Landlord to renew the same.

 

(c)          Abandonment.
Tenant shall abandon the Premises by vacating the Premises and failing to secure and maintain the Premises as required herein.

 

    	 	28	 

     

    

 

(d)          Improper
Transfer. Tenant shall assign, sublease or otherwise transfer or attempt to transfer all or any portion of Tenant's interest
in this Lease or the Premises except as expressly permitted herein, or Tenant's interest in this Lease shall be attached, executed
upon, or otherwise judicially seized and such action is not released within 90 days of the action.

 

(e)          Liens.
Tenant shall fail to discharge or otherwise obtain the release of any lien placed upon the Premises in violation of this Lease
within 30 days after Tenant receives notice that any such lien is filed against the Premises.

 

(f)          Insolvency
Events. Tenant or any guarantor or surety of Tenant's obligations hereunder shall: (A) make a general assignment for the benefit
of creditors; (B) commence any case, proceeding or other action seeking to have an order for relief entered on its behalf as a
debtor or to adjudicate it a bankrupt or insolvent, or seeking reorganization, arrangement, adjustment, liquidation, dissolution
or composition of it or its debts or seeking appointment of a receiver, trustee, custodian or other similar official for it or
for all or of any substantial part of its property (collectively a “Proceeding for Relief”); (C) become the
subject of any Proceeding for Relief which is not dismissed within 90 days of its filing or entry; or (D) die or suffer a legal
disability (if Tenant, guarantor, or surety is an individual) or be dissolved or otherwise fail to maintain its legal existence
(if Tenant, guarantor or surety is a corporation, partnership or other entity).

 

(g)          Estoppel
Certificate or Subordination Agreement. Tenant fails to execute any document required from Tenant under Sections 23
or 27 within 7 days after a second notice requesting such document.

 

(h)          Other
Defaults. Tenant shall fail to comply with any provision of this Lease other than those specifically referred to in this Section
20, and, except as otherwise expressly provided herein, such failure shall continue for a period of 10 business days after
written notice thereof from Landlord to Tenant.

 

Any notice given under Section 20(h)
hereof shall: (i) specify the alleged default, (ii) demand that Tenant cure such default, (iii) be in lieu of, and not in addition
to, or shall be deemed to be, any notice required under any provision of applicable law, and (iv) not be deemed a forfeiture or
a termination of this Lease unless Landlord elects otherwise in such notice; provided that if the nature of Tenant's default
pursuant to Section 20(h) is such that it cannot be cured by the payment of money and reasonably requires more than 10 business
days to cure, then Tenant shall not be deemed to be in default if Tenant commences such cure within said 10 business day period
and thereafter diligently prosecutes the same to completion; provided, however, that such cure shall be completed
no later than 60 days from the date of Landlord's notice.

 

21.          Landlord's
Remedies.

 

(a)          Payment
By Landlord; Interest. Upon a Default by Tenant hereunder, Landlord may, without waiving or releasing any obligation of Tenant
hereunder, make such payment or perform such act. All sums so paid or incurred by Landlord, together with interest thereon, from
the date such sums were paid or incurred, at the annual rate equal to 12% per annum or the highest rate permitted by law (the
"Default Rate"), whichever is less, shall be payable to Landlord on demand as Additional Rent. Nothing herein
shall be construed to create or impose a duty on Landlord to mitigate any damages resulting from Tenant's Default hereunder.

 

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(b)          Late
Payment Rent. Late payment by Tenant to Landlord of Rent and other sums due will cause Landlord to incur costs not contemplated
by this Lease, the exact amount of which will be extremely difficult and impracticable to ascertain. Such costs include, but are
not limited to, processing and accounting charges and late charges which may be imposed on Landlord under any Mortgage covering
the Premises. Therefore, if any installment of Rent due from Tenant is not received by Landlord within 5 days after the date such
payment is due, Tenant shall pay to Landlord an additional sum equal to 6% of the overdue Rent as a late charge. The parties agree
that this late charge represents a fair and reasonable estimate of the costs Landlord will incur by reason of late payment by
Tenant. In addition to the late charge, Rent not paid when due shall bear interest at the Default Rate from the 5th day after
the date due until paid. Notwithstanding the preceding provisions of this Section, for the first overdue payment in any twelve
(12) month period, there shall be no late charge or interest unless Tenant shall have failed to make such overdue payment within
five (5) days after receiving written notice of such failure from Landlord.

 

(c)          Remedies.
Upon the occurrence of a Default, Landlord, at its option, without further notice or demand to Tenant, shall have in addition
to all other rights and remedies provided in this Lease, at law or in equity, the option to pursue any one or more of the following
remedies, each and all of which shall be cumulative and nonexclusive, without any notice or demand whatsoever:

 

(i)          Terminate
this Lease, or at Landlord's option, Tenant's right to possession only, in which event Tenant shall immediately surrender the Premises
to Landlord, and if Tenant fails to do so, Landlord may, without prejudice to any other remedy which it may have for possession
or arrearages in rent, enter upon and take possession of the Premises and expel or remove Tenant and any other person who may be
occupying the Premises or any part thereof, without being liable for prosecution or any claim or damages therefor;

 

(ii)         Upon
any termination of this Lease, whether pursuant to the foregoing Section 21(c)(i) or otherwise, Landlord may recover from
Tenant the following:

 

(A)         The
worth at the time of award of any unpaid rent which has been earned at the time of such termination; plus

 

(B)         The
worth at the time of award of the amount by which the unpaid rent which would have been earned after termination until the time
of award exceeds the amount of such rental loss that Tenant proves could have been reasonably avoided (it being agreed that Tenant
shall be notified and provided a reasonable opportunity to offer such proof); plus

 

(C)         The
worth at the time of award of the amount by which the unpaid rent for the balance of the Term after the time of award exceeds the
amount of such rental loss that Tenant proves could have been reasonably avoided; plus

 

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(D)         Any
other amount necessary to compensate Landlord for all the detriment incurred by Landlord due to Tenant's failure to perform its
obligations under this Lease, specifically including, but not limited to, brokerage commissions and advertising expenses incurred,
expenses of remodeling the Premises or any portion thereof for a new tenant, whether for the same or a different use, and any special
concessions made to obtain a new tenant; and

 

(E)         At
Landlord's election, such other amounts in addition to or in lieu of the foregoing as may be permitted from time to time by applicable
law.

 

The term "rent" as used
in this Section 21 shall be deemed to be and to mean all sums of every nature required to be paid by Tenant pursuant to
the terms of this Lease, whether to Landlord or to others. As used in Sections 21(c)(ii) (A) and (B), above, the
"worth at the time of award" shall be computed by allowing interest at the Default Rate. As used in Section
21(c)(ii)(C) above, the "worth at the time of award" shall be computed by discounting such amount at the discount
rate of the Federal Reserve Bank of Boston at the time of award plus 1%.

 

(iii)        Landlord
may continue this Lease in effect after Tenant's Default and recover rent as it becomes due (Landlord and Tenant hereby agreeing
that Tenant has the right to sublet or assign hereunder, subject only to reasonable limitations). Accordingly, if Landlord does
not elect to terminate this Lease following a Default by Tenant, Landlord may, from time to time, without terminating this Lease,
enforce all of its rights and remedies hereunder, including the right to recover all Rent as it becomes due.

 

(iv)        Whether
or not Landlord elects to terminate this Lease following a Default by Tenant, Landlord shall have the right to terminate any and
all subleases, licenses, concessions or other consensual arrangements for possession entered into by Tenant and affecting the Premises
or may, in Landlord's sole discretion, succeed to Tenant's interest in such subleases, licenses, concessions or arrangements. Upon
Landlord's election to succeed to Tenant's interest in any such subleases, licenses, concessions or arrangements, Tenant shall,
as of the date of notice by Landlord of such election, have no further right to or interest in the rent or other consideration
receivable thereunder.

 

(v)         Independent
of the exercise of any other remedy of Landlord hereunder or under applicable law, Landlord may conduct an environmental test of
the Premises as generally described in Section 30(d) hereof, at Tenant's expense.

 

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(d)          Effect
of Exercise. Exercise by Landlord of any remedies hereunder or otherwise available shall not be deemed to be an acceptance
of surrender of the Premises and/or a termination of this Lease by Landlord, it being understood that such surrender and/or termination
can be effected only by the express written agreement of Landlord and Tenant. Any law, usage, or custom to the contrary notwithstanding,
Landlord shall have the right at all times to enforce the provisions of this Lease in strict accordance with the terms hereof;
and the failure of Landlord at any time to enforce its rights under this Lease strictly in accordance with same shall not be construed
as having created a custom in any way or manner contrary to the specific terms, provisions, and covenants of this Lease or as
having modified the same and shall not be deemed a waiver of Landlord's right to enforce one or more of its rights in connection
with any subsequent default. A receipt by Landlord of Rent or other payment with knowledge of the breach of any covenant hereof
shall not be deemed a waiver of such breach, and no waiver by Landlord of any provision of this Lease shall be deemed to have
been made unless expressed in writing and signed by Landlord. To the greatest extent permitted by law, Tenant waives the service
of notice of Landlord's intention to re-enter, re-take or otherwise obtain possession of the Premises as provided in any statute,
or to institute legal proceedings to that end, and also waives all right of redemption in case Tenant shall be dispossessed by
a judgment or by warrant of any court or judge. Any reletting of the Premises or any portion thereof shall be on such terms and
conditions as Landlord in its sole discretion may determine. Landlord shall not be liable for, nor shall Tenant's obligations
hereunder be diminished because of, Landlord's failure to relet the Premises or collect rent due in respect of such reletting
or otherwise to mitigate any damages arising by reason of Tenant's Default.

 

22.          Assignment
and Subletting.

 

(a)          General
Prohibition. Without Landlord's prior written consent subject to and on the conditions described in this Section 22,
Tenant shall not, directly or indirectly, voluntarily or by operation of law, assign this Lease or sublease the Premises or any
part thereof or mortgage, pledge, or hypothecate its leasehold interest or grant any concession or license within the Premises,
and any attempt to do any of the foregoing shall be void and of no effect. If Tenant is a corporation, partnership or limited
liability company, the shares or other ownership interests thereof which are not actively traded upon a stock exchange or in the
over-the-counter market, a transfer or series of transfers whereby 50% or more of the issued and outstanding shares or other ownership
interests of such corporation are, or voting control is, transferred (but excepting transfers upon deaths of individual owners)
from a person or persons or entity or entities which were owners thereof on the Effective Date to persons or entities who were
not owners of shares or other ownership interests of the corporation, partnership or limited liability company on the Effective
Date, shall be deemed an assignment of this Lease requiring the consent of Landlord as provided in this Section 22.

 

(b)          Permitted
Transfers. If Tenant desires to assign, sublease, hypothecate or otherwise transfer this Lease or sublet the Premises, then
at least 10 business days but not more than 45 business days, before the date Tenant desires the assignment or sublease to be
effective (the "Assignment Date"), Tenant shall give Landlord a notice (the "Assignment Notice")
containing such information about the proposed assignee or sublessee, including the proposed use of the Premises and any Hazardous
Materials proposed to be used, stored handled, treated, generated in or released or disposed of from the Premises, the Assignment
Date, any relationship between Tenant and the proposed assignee or sublessee, and all material terms and conditions of the proposed
assignment or sublease, including a copy of any proposed assignment or sublease in its final form, and such other information
as Landlord may deem reasonably necessary or appropriate to its consideration whether to grant its consent. Landlord may, by giving
written notice to Tenant within 15 business days after receipt of the Assignment Notice: (i) grant such consent, which shall not
be unreasonably withheld, conditioned or delayed, (ii) refuse such consent, in its reasonable discretion, or (iv) terminate this
Lease with respect to the space described in the Assignment Notice as of the Assignment Date (an "Assignment Termination").
Any proposed assignee or sublessee, with respect to any research and development laboratory use, will use the Premises for a scientific
use consistent with a Science Plan (i.e., a brief description of the scientific uses to be made of the research and development
space) approved for its proposed use of the Premises, which approval Landlord shall be in Landlord’s reasonable discretion.
If Landlord delivers notice of its election to exercise an Assignment Termination, which must be given (if at all) within 10 business
days of Landlord’s receipt of the Assignment Notice, Tenant shall have the right to withdraw such Assignment Notice by written
notice to Landlord of such election within 5 business days after Landlord's notice electing to exercise the Assignment Termination.
If Tenant withdraws such Assignment Notice, this Lease shall continue in full force and effect. If Tenant does not withdraw such
Assignment Notice, this Lease, and the term and estate herein granted, shall terminate as of the Assignment Date with respect
to the space described in such Assignment Notice. No failure of Landlord to exercise any such option to terminate this Lease,
or to deliver a timely notice in response to the Assignment Notice, shall be deemed to be Landlord's consent to the proposed assignment,
sublease or other transfer. Tenant shall pay to Landlord a fee equal to One Thousand Five Hundred Dollars ($1,500) in connection
with its consideration of any Assignment Notice and/or its preparation or review of any consent documents.

 

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(i)          Notwithstanding
the preceding provisions of this Section 22(b), Tenant shall have the right to assign the Lease or sublet the Premises,
or any part thereof, without Landlord’s consent, but subject to Landlord’s rights to notice and prohibition contained
herein, to any parent, subsidiary, affiliate or controlled corporation or to corporation which Tenant may be converted or with
which Tenant may merge (each a “Permitted Assignment”) provided such transferee has a net worth equal to or
greater than that of Tenant immediately prior to such transfer and such transferee agrees to be bound under the terms of this Lease.
Tenant shall in any event provide prior written notice to Landlord of Tenant’s intent to undertake a Permitted Assignment,
the identity of the assignee or sublessee, as applicable, and financial information for the proposed transferee and the Tenant
dated within thirty (30) days of the submission that is reasonably satisfactory to Landlord.

 

(c)          Additional
Conditions. As a condition to any such assignment or subletting, whether or not Landlord's consent is required, Landlord may
require:

 

(i)          that
any assignee or subtenant agree, in writing at the time of such assignment or subletting, that if Landlord gives such party notice
that Tenant is in default under this Lease, such party shall thereafter make all payments otherwise due Tenant directly to Landlord,
which payments will be received by Landlord without any liability except to credit such payment against those due under the Lease,
and any such third party shall agree to attorn to Landlord or its successors and assigns should this Lease be terminated for any
reason; provided, however, in no event shall Landlord or its successors or assigns be obligated to accept such attornment; and

 

(ii)         A
list of Hazardous Materials, certified by the proposed assignee or sublessee to be true and correct, which the proposed assignee
or sublessee intends to use, store, handle, treat, generate in or release or dispose of from the Premises, together with copies
of all documents relating to such use, storage, handling, treatment, generation, release or disposal of Hazardous Materials by
the proposed assignee or subtenant in the Premises or on the Property, prior to the proposed assignment or subletting, including,
without limitation: permits; approvals; reports and correspondence; storage and management plans; plans relating to the installation
of any storage tanks to be installed in or under the Property (provided, said installation of tanks shall only be permitted after
Landlord has given its written consent to do so, which consent may be withheld in Landlord's sole and absolute discretion); and
all closure plans or any other documents required by any and all federal, state and local Governmental Authorities for any storage
tanks installed in, on or under the Property for the closure of any such tanks. Neither Tenant nor any such proposed assignee or
subtenant is required, however, to provide Landlord with any portion(s) of the such documents containing information of a proprietary
nature which, in and of themselves, do not contain a reference to any Hazardous Materials or hazardous activities.

 

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(d)          No
Release of Tenant, Sharing of Excess Rents. Notwithstanding any assignment or subletting, Tenant and any guarantor or surety
of Tenant's obligations under this Lease shall at all times remain full and primarily responsible and liable for the payment of
Rent and for compliance with all of Tenant's other obligations under this Lease. If the Rent due and payable by a sublessee or
assignee (or a combination of the rental payable under such sublease or assignment plus any bonus or other consideration therefore
or incident thereto in any form) less the reasonable expenses of Tenant in assigning or subletting (including broker commissions,
improvement allowances and other concessions, renovation expenses and legal fees, each as incurred by Tenant and amortized over
the remaining term of this Lease with respect to an assignment or over the term of the sublease with respect to a sublease), exceeds
the rental payable under this Lease, (excluding however, any Rent payable under this Section) ("Excess Rent"),
then Tenant shall be bound and obligated to pay Landlord as Additional Rent hereunder 50% of such Excess Rent within 10 days following
receipt thereof by Tenant. If Tenant shall sublet the Premises or any part thereof, Tenant hereby immediately and irrevocably
assigns to Landlord, as security for Tenant's obligations under this Lease, all rent from any such subletting, and Landlord as
assignee and as attorney-in-fact for Tenant, or a receiver for Tenant appointed on Landlord's application, may collect such rent
and apply it toward Tenant's obligations under this Lease; except that, until the occurrence of a Default, Tenant shall have the
right to collect such rent.

 

(e)          No
Waiver. The consent by Landlord to an assignment or subletting shall not relieve Tenant or any assignees of this Lease or
any sublessees of the Premises from obtaining the consent of Landlord to any further assignment or subletting nor shall it release
Tenant or any assignee or sublessee of Tenant from full and primary liability under the Lease. The acceptance of Rent hereunder,
or the acceptance of performance of any other term, covenant, or condition thereof, from any other person or entity shall not
be deemed to be a waiver of any of the provisions of this Lease or a consent to any subletting, assignment or other transfer of
the Premises.

 

(f)          Prior
Conduct of Proposed Transferee. Notwithstanding any other provision of this Section 22, if (i) the proposed assignee
or sublessee of Tenant has been required by any prior landlord, lender or Governmental Authority to take remedial action in connection
with Hazardous Materials contaminating a property, where the contamination resulted from such party's action or use of the property
in question, (ii) the proposed assignee or sublessee is subject to an enforcement order issued by any Governmental Authority in
connection with the use, storage, handling, treatment, generation, release or disposal of Hazardous Materials (including, without
limitation, any order related to the failure to make a required reporting to any Governmental Authority), or (iii) because of
the existence of a pre-existing environmental condition in the vicinity of or underlying the Property, the risk that Landlord
would be targeted as a responsible party in connection with the remediation of such pre-existing environmental condition would
be materially increased or exacerbated by the proposed use of Hazardous Materials by such proposed assignee or sublessee, Landlord
shall have the absolute right to refuse to consent to any assignment or subletting to any such party.

 

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23.         Estoppel
Certificate. Tenant shall, within 10 business days of written notice from Landlord, execute, acknowledge and deliver a statement
in writing in any form reasonably requested by a proposed lender or purchaser, (i) certifying that this Lease is unmodified and
in full force and effect (or, if modified, stating the nature of such modification and certifying that this Lease as so modified
is in full force and effect) and the dates to which the rental and other charges are paid in advance, if any, (ii) acknowledging
that there are not any uncured defaults on the part of Landlord hereunder, or specifying such defaults if any are claimed, and
(iii) setting forth such further information with respect to the status of this Lease or the Premises as may be reasonably requested
thereon. Any such statement may be relied upon by any prospective purchaser or encumbrancer of all or any portion of the real
property of which the Premises are a part. If Tenant shall fail to deliver such statement within such time, Landlord may, at its
option, send a second notice to Tenant with the same statement, which notice also shall provide in large bold type THIS IS
THE SECOND NOTICE REQUESTING AN ESTOPPEL CERTIFICATE PURSUANT TO SECTION 23 OF THE LEASE; ANY FAILURE TO RESPOND IN SEVEN DAYS
SHALL BE A DEFAULT UNDER THE LEASE, and if such 7 day period shall elapse after Tenant’s receipt of the second notice
with no executed statement from Tenant, then at the option of Landlord, such shall constitute a Default under this Lease, and,
in any event, shall be conclusive upon Tenant that this Lease is in full force and effect and without modification except as may
be represented by Landlord in any certificate prepared by Landlord and delivered to Tenant for execution.

 

24.         Quiet
Enjoyment. So long as Tenant is not in Default under this Lease, Tenant shall, subject to the terms of this Lease, at all
times during the Term, have peaceful and quiet enjoyment of the Premises against any person claiming by, through or under Landlord.

 

25.         Prorations.
All prorations required or permitted to be made hereunder shall be made on the basis of a 360 day year and 30 day months.

 

26.         Rules
and Regulations. Tenant shall, at all times during the Term and any extension thereof, comply with all reasonable rules and
regulations at any time or from time to time established by Landlord covering use of the Premises and the Property. The current
rules and regulations are attached hereto as Exhibit D. If there is any conflict between said rules and regulations and
other provisions of this Lease, the terms and provisions of this Lease shall control. Landlord shall not have any liability or
obligation for the breach of any rules or regulations by other tenants in the Property. Landlord shall not enforce such rules
and regulations in a discriminatory manner among tenants in the Building.

 

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27.         Subordination.
This Lease and Tenant's interest and rights hereunder are hereby made and shall be subject and subordinate at all times to the
lien of any Mortgage now existing or hereafter created on or against the Property or the Premises, and all amendments, restatements,
renewals, modifications, consolidations, refinancing, assignments and extensions thereof, without the necessity of any further
instrument or act on the part of Tenant; provided, however that so long as there is no Default hereunder, Tenant's
right to possession of the Premises shall not be disturbed by the Holder of any such Mortgage. Tenant agrees, at the election
of the Holder of any such Mortgage, to attorn to any such Holder. Tenant agrees upon demand to execute, acknowledge and deliver
such instruments, confirming such subordination, and such instruments of attornment as shall be requested by any such Holder,
provided any such instruments shall contain appropriate non-disturbance provisions assuring Tenant's quiet enjoyment of the Premises
as set forth in Section 24 hereof and shall not vary the terms of this Section 27. Notwithstanding the foregoing,
any such Holder may at any time subordinate its Mortgage to this Lease, without Tenant's consent, by notice in writing to Tenant,
and thereupon this Lease shall be deemed prior to such Mortgage without regard to their respective dates of execution, delivery
or recording and in that event such Holder shall have the same rights with respect to this Lease as though this Lease had been
executed prior to the execution, delivery and recording of such Mortgage and had been assigned to such Holder. The term "Mortgage"
whenever used in this Lease shall be deemed to include deeds of trust, security assignments and any other encumbrances, and any
reference to the "Holder" of a Mortgage shall be deemed to include the beneficiary under a deed of trust.

 

28.         Surrender.
Upon the expiration of the Term or earlier termination of Tenant's right of possession, Tenant shall surrender the Premises to
Landlord (i) in the same condition as received, subject to leaving in place the Tenant’s Work (except to the extent that
Tenant requested a determination by Landlord as to such removal with Landlord’s approval of Tenant’s Work and Landlord
has identified in writing in its approval(s) of Tenant’s Work any items that are not comparable to improvements for lab
space in the Worcester market, any of such items to be removed by Tenant under this Section) and any Installations for which removal
is not required pursuant to Section 12 above, (ii) free of Hazardous Materials brought upon, kept, used, stored, handled,
treated, generated in, or released or disposed of from, the Premises by any person other than a Landlord Party (collectively,
"Tenant HazMat Operations") and released of all Hazardous Materials Clearances, (iii) broom clean, ordinary wear
and tear and casualty loss and condemnation covered by Sections 18 and 19 excepted. At least 3 months prior to the
surrender of the Premises, Tenant shall deliver to Landlord a narrative description of the actions proposed (or required by any
Governmental Authority) to be taken by Tenant in order to surrender the Premises (including any Installations permitted by Landlord
to remain in the Premises) at the expiration or earlier termination of the Term, free from any residual impact from the Tenant
HazMat Operations and otherwise released for unrestricted use and occupancy (the "Surrender Plan"). Such Surrender
Plan shall be in a format and with the amount of detail as reasonably required by Landlord by form provided by Landlord and attached
at Exhibit F and accompanied by a current listing of (i) all Hazardous Materials licenses and permits held by or on behalf
of any Tenant Party with respect to the Premises, and (ii) all Hazardous Materials used, stored, handled, treated, generated,
released or disposed of from the Premises, and shall be subject to the review and approval of Landlord's environmental consultant.
In connection with the review and approval of the Surrender Plan, upon the request of Landlord, Tenant shall deliver to Landlord
or its consultant such additional non-proprietary information concerning Tenant HazMat Operations as Landlord shall request. On
or before such surrender, Tenant shall deliver to Landlord evidence that the approved Surrender Plan shall have been satisfactorily
completed and Landlord shall have the right, subject to reimbursement at Tenant's expense as set forth below, to cause Landlord's
environmental consultant to inspect the Premises and perform such additional procedures as may be deemed reasonably necessary
to confirm that the Premises are, as of the effective date of such surrender or early termination of the Lease, free from any
residual impact from Tenant HazMat Operations. Tenant shall reimburse Landlord, as Additional Rent, for the actual out-of pocket
expense incurred by Landlord for Landlord's environmental consultant to review and approve the Surrender Plan and to visit the
Premises and verify satisfactory completion of the same, which cost shall not exceed $5,000. Landlord shall have the unrestricted
right to deliver such Surrender Plan and any report by Landlord's environmental consultant with respect to the surrender of the
Premises to third parties. Provided Tenant’s Work is reasonably standard and comparable to improvements for lab space in
the Worcester market, Landlord shall not require Tenant to remove Tenant’s Work performed with respect to initial occupancy
at the expiration or earlier termination of the Term.

 

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If Tenant shall fail
to prepare or submit a Surrender Plan approved by Landlord, or if Tenant shall fail to complete the approved Surrender Plan, or
if such Surrender Plan, whether or not approved by Landlord, shall fail to adequately address any residual effect of Tenant HazMat
Operations in, on or about the Premises, Landlord shall have the right to take such actions as Landlord may deem reasonable or
appropriate to assure that the Premises and the Property are surrendered free from any residual impact from Tenant HazMat Operations,
the cost of which actions shall be reimbursed by Tenant as Additional Rent, without regard to the limitation set forth in the first
paragraph of this Section 28.

 

Tenant shall immediately
return to Landlord all keys and/or access cards to parking, the Property, restrooms or all or any portion of the Premises furnished
to or otherwise procured by Tenant. If any such access card or key provided to Tenant by Landlord is lost, Tenant shall pay to
Landlord, at Landlord's election, either the cost of replacing such lost access card or key or the cost of reprogramming the access
security system in which such access card was used or changing the lock or locks opened by such lost key. Any Tenant's Property,
Alterations and property not so removed by Tenant as permitted or required herein shall be deemed abandoned and, to the extent
Tenant was required to remove the same from the Premises under this Lease, may be stored, removed, and disposed of by Landlord
at Tenant's expense, and Tenant waives all claims against Landlord for any damages resulting from Landlord's retention and/or disposition
of such property. All obligations of Tenant hereunder not fully performed as of the termination of the Term, including the obligations
of Tenant under Section 30 hereof, shall survive the expiration or earlier termination of the Term, including, without limitation,
indemnity obligations, payment obligations with respect to Rent and obligations concerning the condition and repair of the Premises.

 

29.         Waiver
of Jury Trial. TO THE EXTENT PERMITTED BY LAW, TENANT AND LANDLORD WAIVE ANY RIGHT TO TRIAL BY JURY OR TO HAVE A JURY PARTICIPATE
IN RESOLVING ANY DISPUTE, WHETHER SOUNDING IN CONTRACT, TORT, OR OTHERWISE, BETWEEN LANDLORD AND TENANT ARISING OUT OF THIS LEASE
OR ANY OTHER INSTRUMENT, DOCUMENT, OR AGREEMENT EXECUTED OR DELIVERED IN CONNECTION HEREWITH OR THE TRANSACTIONS RELATED HERETO.

 

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30.          Environmental
Requirements.

 

(a)          Prohibition/Compliance/Indemnity.
Tenant shall not cause or permit any Hazardous Materials (as hereinafter defined) to be brought upon, kept, used, stored, handled,
treated, generated in or about, or released or disposed of from, the Premises or the Property in violation of applicable Environmental
Requirements (as hereinafter defined) by Tenant or any Tenant Party. If Tenant breaches the obligation stated in the preceding
sentence, or if the presence of Hazardous Materials in the Premises during the Term or any holding over results in contamination
of the Premises, the Property or any adjacent property or if contamination of the Premises, the Property or any adjacent property
by Hazardous Materials brought into, kept, used, stored, handled, treated, generated in or about, or released or disposed of from,
the Premises by anyone other than Landlord and Landlord's employees, agents and contractors otherwise occurs during the Term or
any holding over, Tenant hereby indemnifies and shall defend and hold Landlord, its officers, directors, employees, agents and
contractors harmless from any and all actions (including, without limitation, remedial or enforcement actions of any kind, administrative
or judicial proceedings, and orders or judgments arising out of or resulting therefrom), costs, claims, damages (including, without
limitation, punitive damages and damages based upon diminution in value of the Premises or the Property, or the loss of, or restriction
on, use of the Premises or any portion of the Property), expenses (including, without limitation, attorneys', consultants' and
experts' fees, court costs and amounts paid in settlement of any claims or actions), fines, forfeitures or other civil, administrative
or criminal penalties, injunctive or other relief (whether or not based upon personal injury, property damage, or contamination
of, or adverse effects upon, the environment, water tables or natural resources), liabilities or losses (collectively, "Environmental
Claims") to the extent that the same are caused by a breach of the aforesaid obligation of Tenant, whether such Environmental
Claims arise during or after the Term. This indemnification of Landlord by Tenant includes, without limitation, costs incurred
in connection with any investigation of site conditions or any cleanup, treatment, remedial, removal, or restoration work required
by any federal, state or local Governmental Authority because of Hazardous Materials present in the air, soil or ground water
above, on, or under the Premises. Without limiting the foregoing, if the presence of any Hazardous Materials on the Premises,
the Property or any adjacent property caused or permitted by Tenant or any Tenant Party, results in any contamination of the Premises,
the Property or any adjacent property, Tenant shall promptly take all actions at its sole expense and in accordance with applicable
Environmental Requirements as are necessary to return the affected portion(s) of the Premises, the Property or any adjacent property
to the condition existing prior to the time of such contamination, provided that Landlord's approval of such action shall first
be obtained, which approval shall not unreasonably be withheld so long as such actions would not potentially have any material
adverse long-term or short-term effect on the Premises or the Property. Notwithstanding any provisions of this Section 30 or otherwise
in this Lease to the contrary, Tenant shall not have or incur no liability under this Section 30 because of the existence of an
environmental condition in the vicinity of or underlying the Property dating prior to Tenant being granted possession of the Premises
(a “Prior Environmental Condition”), or because of any risk that Landlord or Tenant would be targeted as a responsible
party in connection with the remediation of any such Prior Environmental Condition at the Property.

 

    	 	38	 

     

    

 

(b)          Business.
Landlord acknowledges that it is not the intent of this Section 30, nor shall this Section be interpreted or applied so
as, to prohibit, restrict or impair Tenant’s use of the Premises for the Permitted Use. Tenant may operate its business
according to prudent industry practices so long as the use or presence of Hazardous Materials is strictly and properly monitored
according to all then applicable Environmental Requirements. As a material inducement to Landlord to allow Tenant to use Hazardous
Materials in connection with its business, Tenant has provided the list attached hereto as Exhibit I identifying each type
of Hazardous Materials that Tenant reasonably anticipates will be brought upon, kept, used, stored, handled, treated, generated
on, or released or disposed of from, the Premises and setting forth any and all governmental approvals or permits required in
connection with the presence, use, storage, handling, treatment, generation, release or disposal of such Hazardous Materials on
or from the Premises ("Hazardous Materials List"). Tenant shall deliver to Landlord an updated Hazardous Materials
List at least once a year and shall also deliver an updated list before any new Hazardous Material is brought onto, kept, used,
stored, handled, treated, generated on, or released or disposed of from, the Premises. Tenant shall deliver to Landlord true and
correct copies of the following documents (the "Haz Mat Documents") relating to the use, storage, handling, treatment,
generation, release or disposal of Hazardous Materials prior to the Commencement Date, or if unavailable at that time, concurrent
with the receipt from or submission to a Governmental Authority: permits; approvals; reports, and correspondence to and from a
Governmental Authority; storage and management plans, notice of violations of any Legal Requirements; and the following only in
the event that Tenant installs any storage tanks in or under the Property (provided, said installation of tanks shall only be
permitted after Landlord has given Tenant its written consent to do so, which consent may be withheld in Landlord's sole and absolute
discretion): (x) plans relating to the installation of any such storage tanks to be installed in or under the Property; and (y)
all closure plans or any other documents, which Tenant is required to deliver to any and all federal, state and local Governmental
Authorities for any storage tanks installed in, on or under the Property for the closure of any such tanks; and a Surrender Plan
(to the extent surrender in accordance with Section 28 cannot be accomplished in 3 months). Tenant is not, and shall not
be, required to provide Landlord with any portion(s) of the Haz Mat Documents containing information of a confidential or proprietary
nature which, in and of themselves, do not contain a reference to any Hazardous Materials or hazardous activities. It is not the
intent of this Section to obligate Tenant to provide Landlord with information which could be detrimental to Tenant's business
should such information become possessed by Tenant's competitors. On request, Landlord will execute and deliver to Tenant a confidentiality
agreement covering disclosures from Tenant to Landlord under this Section 30.

 

(c)          Tenant
Representation and Warranty. Tenant hereby represents and warrants to Landlord that (i) neither Tenant nor any of its legal
predecessors has been required by any prior landlord, lender or Governmental Authority at any time to take remedial action in
connection with Hazardous Materials contaminating a property which contamination was permitted by Tenant of such predecessor or
resulted from Tenant's or such predecessor's action or use of the property in question, and (ii) Tenant is not subject to any
enforcement order issued by any Governmental Authority in connection with the use, storage, handling, treatment, generation, release
or disposal of Hazardous Materials (including, without limitation, any order related to the failure to make a required reporting
to any Governmental Authority). If Landlord determines that this representation and warranty was not true as of the Effective
Date, Landlord shall have the right to terminate this Lease in Landlord's sole and absolute discretion by notice to Tenant. To
the best knowledge of Tenant, Mustang Therapeutics, Inc., is the only legal predecessor to Tenant.

 

    	 	39	 

     

    

 

(d)          Testing.
At any time, and from time to time, prior to the expiration or earlier termination of the Term, Landlord shall have the right
to conduct appropriate tests of the Premises and the Property to determine if contamination has occurred as a result of Tenant's
use of the Premises. If needed in connection with such testing, upon the request of Landlord, Tenant shall deliver to Landlord
or its consultant such non-proprietary information concerning the use of Hazardous Materials in or about the Premises by Tenant
or any Tenant Party. If the final written report of such testing confirms that contamination has occurred for which Tenant is
liable under this Section 30 (i.e., which is not a Prior Environmental Condition), then Tenant shall pay all costs to conduct
such tests, but in all other cases, Landlord shall pay the costs of such tests (which shall not constitute an Operating Expense).
Landlord shall provide Tenant with a copy of all third party, non-confidential reports and tests of the Premises made by or on
behalf of Landlord during the Term without representation or warranty and subject to a confidentiality agreement. Tenant shall,
at its sole cost and expense, promptly and satisfactorily remediate, in accordance with all Environmental Requirements, any environmental
conditions identified by such testing, other than, and except to the extent arising from, Prior Environmental Conditions. Landlord's
receipt of or satisfaction with any environmental assessment in no way waives any rights which Landlord may have against Tenant.

 

(e)          Control
Areas. Tenant shall be allowed to utilize up to its “pro rata share” (as herein defined) of the Hazardous Materials
inventory within any control area or zone (located within the Premises), as designated by the applicable building code, for chemical
use or storage. As used in the preceding sentence, Tenant's pro rata share of any control areas or zones located within the Premises
shall be determined based on the rentable square footage that Tenant leases within the applicable control area or zone. For purposes
of example only, if a control area or zone contains 10,000 rentable square feet and 2,000 rentable square feet of a tenant's premises
are located within such control area or zone (while such premises as a whole contains 5,000 rentable square feet), the applicable
tenant's pro rata share of such control area would be 20%. The first floor of the Building will constitute one control zone. The
maximum quantity permitted in a control zone shall be determined by the standards set forth in the International Building Code
and International Fire Code and varies for each floor of a building. The currently permitted quantity for the first floor of the
Building is 480 gallons for Class 1B flammable liquids. If additional control zones are required due to excess inventory or different
types of flammables, Tenant may request Landlord approval of work necessary to the Building to permit such additional control
zones, which approval shall be granted or denied in Landlord’s sole discretion and Tenant shall be responsible for all costs
of such necessary work associated with construction and code compliance.

 

(f)          Underground
Tanks. If underground or other storage tanks storing Hazardous Materials located on the Premises or the Property are used
by Tenant or are hereafter placed on the Premises or the Property by Tenant, Tenant shall install, use, monitor, operate, maintain,
upgrade and manage such storage tanks, maintain appropriate records, obtain and maintain appropriate insurance, implement reporting
procedures, properly close any underground storage tanks, and take or cause to be taken all other actions necessary or required
under applicable state and federal Legal Requirements, as such now exists or may hereafter be adopted or amended in connection
with Tenant’s installation, use, maintenance, management, operation, upgrading and closure of such storage tanks. Notwithstanding
the preceding terms of this paragraph, and other than storage tanks installed by or on behalf of Tenant within the Premises, Tenant
shall not be responsible for assuring compliance with Legal Requirements of any storage tanks on the Property, but not the Premises
by parties other than Tenant or Tenant Related Parties.

 

    	 	40	 

     

    

 

(g)          Tenant's
Obligations. Tenant's obligations under this Section 30 shall survive the expiration or earlier termination of this
Lease. During any period of time after the expiration or earlier termination of this Lease required by Tenant (or Landlord after
failure of Tenant to do so) to complete the removal from the Premises of any Hazardous Materials (including, without limitation,
the release and termination of any licenses or permits restricting the use of the Premises and the completion of Tenant’s
obligations under Section 28), which Tenant is obligated to remove by the terms of this Lease, Tenant shall continue to
be responsible for Rent in accordance with this Lease.

 

(h)          Definitions.
As used herein, the term "Environmental Requirements" means all applicable present and future statutes, regulations,
ordinances, rules, codes, judgments, orders or other similar enactments of any Governmental Authority regulating or relating to
health, safety, or environmental conditions on, under, or about the Premises or the Property, or the environment, including without
limitation, the following: the Comprehensive Environmental Response, Compensation and Liability Act; the Resource Conservation
and Recovery Act; and all state and local counterparts thereto, and any regulations or policies promulgated or issued thereunder.
As used herein, the term "Hazardous Materials" means and includes any substance, material, waste, pollutant,
or contaminant listed or defined as hazardous or toxic, or regulated by reason of its impact or potential impact on humans, animals
and/or the environment under any Environmental Requirements, asbestos and petroleum, including crude oil or any fraction thereof,
natural gas liquids, liquefied natural gas, or synthetic gas usable for fuel (or mixtures of natural gas and such synthetic gas).
As defined in Environmental Requirements, Tenant is and shall be deemed to be the "operator" of Tenant's "facility"
and the "owner" of all Hazardous Materials brought on the Premises by Tenant or any Tenant Party, and the wastes,
by-products, or residues generated, resulting, or produced therefrom.

 

31.         Tenant's
Remedies/Limitation of Liability. Landlord shall not be in default hereunder unless Landlord fails to perform any of its obligations
hereunder within 30 days after written notice from Tenant specifying such failure (unless such performance will, due to the nature
of the obligation, require a period of time in excess of 30 days, then after such period of time as is reasonably necessary).
Upon any default by Landlord, Tenant shall give notice by registered or certified mail to any Holder of a Mortgage covering the
Premises Tenant shall offer such Holder and/or Landlord a reasonable opportunity to cure the default, including time to obtain
possession of the Property by power of sale or a judicial action if such should prove necessary to effect a cure; provided
Landlord shall have furnished to Tenant in writing the names and addresses of all such persons who are to receive such notices.
All obligations of Landlord hereunder shall be construed as covenants, not conditions; and, except as may be otherwise expressly
provided in this Lease, Tenant may not terminate this Lease for breach of Landlord's obligations hereunder.

 

    	 	41	 

     

    

 

All obligations of
Landlord under this Lease will be binding upon Landlord only during the period of its ownership of the Premises and not thereafter,
except insofar as Landlord may fail to transfer the Security Deposit to any successor Landlord under this Lease. Except as provided
in the previous sentence, the term "Landlord" in this Lease shall mean only the owner for the time being of the
Premises. Upon the transfer by such owner to its proper successor under this Lease of the Security Deposit and its interest in
the Premises, such owner shall thereupon be released and discharged from all obligations of Landlord thereafter accruing, but such
obligations shall be binding during the Term upon each new owner for the duration of such owner's ownership.

 

32.         Inspection
and Access. Landlord and its agents, representatives, contractors and guests may enter the Premises, subject to the terms
of this Section, during Business Hours on not less than 24 hours advance written notice (except in the case of emergencies in
which case no such notice shall be required and such entry may be at any time) for the purpose of (i) inspecting the Premises,
(ii) making repairs, and (iii) showing the Premises to prospective purchasers or lenders and, during the last year of the
Term, to prospective tenants. Tenant shall at all times, except in the case of emergencies, have the right to appoint an employee
or other representative to escort Landlord or its agents, representatives, contractors or guests while the same are in the Premises,
provided such escort does not materially and adversely impair Landlord's access rights hereunder. Tenant may from time to time
adopt commercially reasonable systems and procedures for the security, access and safety of the Premises (whether they be for
purposes of confidentiality, guarding of trade secrets, health and safety, mitigation of contamination of scientific research
or its results, or other business purposes), its occupants, entry, use and contents, and Landlord, its agents, employees, contractors,
guests and invitees, shall comply with such systems and procedures in connection with any entry into the Premises provided that
such systems and procedures shall not materially affect Landlord’s access and inspection rights hereunder. Landlord may
erect a suitable sign on the Premises, during the last year of the Term, stating the Premises are available to let or that the
Property is available for sale. Landlord may grant easements, make public dedications, designate Common Areas and create restrictions
on or about the Property, provided that no such easement, dedication, designation or restriction materially, adversely
affects Tenant's use or occupancy of the Premises for the Permitted Use. At Landlord's request, Tenant shall execute such instruments
as may be necessary for such easements, dedications or restrictions.

 

33.         Security.
Tenant acknowledges and agrees that security devices and services, if any, while intended to deter crime may not in given instances
prevent theft or other criminal acts and that Landlord is not providing any security services with respect to the Premises. Tenant
agrees that Landlord shall not be liable to Tenant for, and Tenant waives any claim against Landlord with respect to, any loss
by theft or any other damage suffered or incurred by Tenant in connection with any unauthorized entry into the Premises or any
other breach of security with respect to the Premises, except to the extent arising from the negligence or misconduct of Landlord
or a Landlord Party. Tenant shall be solely responsible for the personal safety of Tenant's officers, employees, agents, contractors,
guests and invitees while any such person is in, on or about the Premises and/or the Property. Tenant may at Tenant's cost obtain
insurance coverage to the extent Tenant desires protection against such criminal acts.

 

    	 	42	 

     

    

 

34.         Force
Majeure. Landlord shall not be responsible or liable for delays in the performance of its obligations hereunder when caused
by, related to, or arising out of acts of God, sinkholes or subsidence, strikes, lockouts, or other labor disputes, embargoes,
quarantines, weather, national, regional, or local disasters, catastrophes, or catastrophes, inability to obtain labor or materials
(or reasonable substitutes therefore) at reasonable costs or failure of, or inability to obtain, utilities necessary for performance,
governmental restrictions, orders, limitations, regulations, or controls, national emergencies, delay in issuance or revocation
of permits, enemy or hostile governmental action, terrorism, insurrection, riots, civil disturbance or commotion, fire or other
casualty, and other causes or events beyond the reasonable control of Landlord ("Force Majeure").

 

35.         Brokers.
Landlord and Tenant each represents and warrants that Kelleher & Sadowsky Associates, Inc. and Cranberry Hill Associates,
Inc. (collectively, the “Broker”), it has not dealt with any broker, agent or other person in connection with
this transaction and that no parties other than Broker brought about this transaction. Landlord and Tenant each hereby agree to
indemnify and hold the other harmless from and against any claims by any broker, other than the Broker, if any named in this Section
35, claiming a commission or other form of compensation by virtue of having dealt with Tenant or Landlord, as applicable,
with regard to this leasing transaction. In the event that a transaction is consummated, the Landlord shall be responsible for
the payment of all brokerage fees to Broker as per a separate agreement.

 

36.         Limitation
on Landlord's Liability. NOTWITHSTANDING ANYTHING SET FORTH HEREIN OR IN ANY OTHER AGREEMENT BETWEEN LANDLORD AND TENANT TO
THE CONTRARY: (A) EXCEPT TO THE EXTENT OF DAMAGE FROM NEGLIGENCE OR MISCONDUCT OF LANDLORD OR A LANDLORD PARTY, LANDLORD SHALL
NOT BE LIABLE TO TENANT OR ANY OTHER PERSON FOR (AND TENANT ASSUMES ALL RISK OF) LOSS, DAMAGE OR INJURY, WHETHER ACTUAL OR CONSEQUENTIAL
TO: TENANT’S OR ANY OTHER PARTY’S PERSONAL PROPERTY OF EVERY KIND AND DESCRIPTION, INCLUDING, WITHOUT LIMITATION TRADE
FIXTURES, EQUIPMENT, INVENTORY, SCIENTIFIC RESEARCH, SCIENTIFIC EXPERIMENTS, LABORATORY ANIMALS, PRODUCT, SPECIMENS, SAMPLES,
AND/OR SCIENTIFIC, BUSINESS, ACCOUNTING AND OTHER RECORDS OF EVERY KIND AND DESCRIPTION KEPT AT THE PREMISES AND ANY AND ALL INCOME
DERIVED OR DERIVABLE THEREFROM; (B) THERE SHALL BE NO PERSONAL RECOURSE TO LANDLORD FOR ANY ACT OR OCCURRENCE IN, ON OR ABOUT
THE PREMISES OR ARISING IN ANY WAY UNDER THIS LEASE OR ANY OTHER AGREEMENT BETWEEN LANDLORD AND TENANT WITH RESPECT TO THE SUBJECT
MATTER HEREOF; ANY LIABILITY OF LANDLORD HEREUNDER SHALL BE STRICTLY LIMITED SOLELY TO (i) LANDLORD'S INTEREST IN THE PROPERTY
OR ANY PROCEEDS FROM SALE OR CONDEMNATION THEREOF AND (ii) ANY INSURANCE PROCEEDS PAYABLE IN RESPECT OF LANDLORD'S INTEREST IN
THE PROPERTY OR IN CONNECTION WITH ANY SUCH LOSS; AND (C) IN NO EVENT SHALL ANY PERSONAL LIABILITY BE ASSERTED AGAINST LANDLORD
IN CONNECTION WITH THIS LEASE NOR SHALL ANY RECOURSE BE HAD TO ANY OTHER PROPERTY OR ASSETS OF LANDLORD OR ANY OF LANDLORD'S OFFICERS,
DIRECTORS, EMPLOYEES, AGENTS OR CONTRACTORS. UNDER NO CIRCUMSTANCES SHALL LANDLORD OR ANY OF LANDLORD'S OFFICERS, DIRECTORS, EMPLOYEES,
AGENTS OR CONTRACTORS BE LIABLE FOR INJURY TO TENANT’S BUSINESS OR FOR ANY LOSS OF INCOME OR PROFIT THEREFROM.

 

    	 	43	 

     

    

 

37.         Severability.
If any clause or provision of this Lease is illegal, invalid or unenforceable under present or future laws, then and in that event,
it is the intention of the parties hereto that the remainder of this Lease shall not be affected thereby. It is also the intention
of the parties to this Lease that in lieu of each clause or provision of this Lease that is illegal, invalid or unenforceable,
there be added, as a part of this Lease, a clause or provision as similar in effect to such illegal, invalid or unenforceable
clause or provision as shall be legal, valid and enforceable.

 

38.         Signs;
Exterior Appearance. Tenant shall not, without the prior written consent of Landlord, which may be granted or withheld in
Landlord's sole discretion: (i) attach any awnings, exterior lights, decorations, balloons, flags, pennants, banners, painting
or other projection to any outside wall of the Property, (ii) use any curtains, blinds, shades or screens other than Landlord's
standard window coverings, (iii) coat or otherwise sunscreen the interior or exterior of any windows, (iv) place any bottles,
parcels, or other articles on the window sills, (v) place any equipment, furniture or other items of personal property on
any exterior balcony, or (vi) paint, affix or exhibit on any part of the Premises or the Property any signs, notices, window
or door lettering, placards, decorations, or advertising media of any type which can be viewed from the exterior of the Premises.
Interior signs on doors and the directory tablet shall be inscribed, painted or affixed for Tenant by Landlord at the sole cost
and expense of Tenant, and shall be of a size, color and type acceptable to Landlord. Nothing may be placed on the exterior of
corridor walls or corridor doors other than Landlord's standard lettering. The directory tablet shall be provided exclusively
for the display of the name and location of tenants.

 

39.         Intentionally
Omitted.

 

40.          Miscellaneous.

 

(a)          Notices.
All notices or other communications between the parties shall be in writing and shall be deemed duly given upon delivery or refusal
to accept delivery by the addressee thereof if delivered in person, or upon actual receipt if delivered by reputable overnight
guaranty courier, addressed and sent to the parties at their addresses set forth above. Landlord and Tenant may from time to time
by written notice to the other designate another address for receipt of future notices.

 

(b)          Joint
and Several Liability. If and when included within the term "Tenant," as used in this instrument, there is
more than one person or entity, each shall be jointly and severally liable for the obligations of Tenant.

 

(c)          Financial
Information. As of the Commencement Date, Tenant is subject to the public reporting requirements of the Securities Exchange
Act of 1934, and publically reports such financial information on a nonconsolidated basis with any other entity, but in the event
Tenant ceases to be subject to the public reporting requirements of the Securities Exchange Act of 1934 or publically reports
financial information on a consolidated or rolled up basis with ny entity other than a wholly owned subsidiary of Tenant, the
following terms of this Section 40(c) shall apply, and only in such event. Subject to the terms of the preceding sentence,
Tenant shall furnish Landlord with true and complete copies of (i) Tenant's most recent audited annual financial statements within
90 days of the end of each of Tenant's fiscal years during the Term, (ii) Tenant's most recent unaudited quarterly financial statements
within 45 days of the end of each of Tenant's first three fiscal quarters of each of Tenant's fiscal years during the Term, (iii)
at Landlord's request from time to time, updated business plans, including cash flow projections and/or pro forma balance sheets
and income statements, all of which shall be treated by Landlord as confidential information belonging to Tenant, (iv) at Landlord's
request from time to time corporate brochures and/or profiles prepared by Tenant for prospective investors, and (v) any other
financial information or summaries that Tenant typically provides to its lenders or shareholders.

 

    	 	44	 

     

    

 

(d)          Recordation.
This Lease shall not be recorded, but upon request of either party a memorandum of lease shall be executed by the parties and
may be recorded at Tenant’s expense in the appropriate public registry.

 

(e)          Interpretation.
The normal rule of construction to the effect that any ambiguities are to be resolved against the drafting party shall not be
employed in the interpretation of this Lease or any exhibits or amendments hereto. Words of any gender used in this Lease shall
be held and construed to include any other gender, and words in the singular number shall be held to include the plural, unless
the context otherwise requires. The captions inserted in this Lease are for convenience only and in no way define, limit or otherwise
describe the scope or intent of this Lease, or any provision hereof, or in any way affect the interpretation of this Lease.

 

(f)          Not
Binding Until Executed. The submission by Landlord to Tenant of this Lease shall have no binding force or effect, shall not
constitute an option for the leasing of the Premises, nor confer any right or impose any obligations upon either party until the
“Effective Date” (as defined on the signature page hereof).

 

(g)          Limitations
on Interest. It is expressly the intent of Landlord and Tenant at all times to comply with applicable law governing the maximum
rate or amount of any interest payable on or in connection with this Lease. If applicable law is ever judicially interpreted so
as to render usurious any interest called for under this Lease, or contracted for, charged, taken, reserved, or received with
respect to this Lease, then it is Landlord's and Tenant's express intent that all excess amounts theretofore collected by Landlord
be credited on the applicable obligation (or, if the obligation has been or would thereby be paid in full, refunded to Tenant),
and the provisions of this Lease immediately shall be deemed reformed and the amounts thereafter collectible hereunder reduced,
without the necessity of the execution of any new document, so as to comply with the applicable law, but so as to permit the recovery
of the fullest amount otherwise called for hereunder.

 

(h)          Choice
of Law. Construction and interpretation of this Lease shall be governed by the internal laws of the state in which the Premises
are located, excluding any principles of conflicts of laws.

 

(i)          Time.
Time is of the essence as to the performance of each party’s obligations under this Lease.

 

    	 	45	 

     

    

 

(j)          OFAC.
Tenant, for itself and for and all beneficial owners of Tenant, and Landlord, for itself and for all beneficial owners of Landlord,
each represents and warrants that they currently (a) in compliance with and shall at all times during the Term of this Lease remain
in compliance with the regulations of the Office of Foreign Assets Control ("OFAC") of the U.S. Department of
Treasury and any statute, executive order, or regulation relating thereto (collectively, the "OFAC Rules"), (b)
not listed on, and shall not during the term of this Lease be listed on, the Specially Designated Nationals and Blocked Persons
List maintained by OFAC and/or on any other similar list maintained by OFAC or other governmental authority pursuant to any authorizing
statute, executive order, or regulation, and (c) not a person or entity with whom a U.S. person is prohibited from conducting
business under the OFAC Rules.

 

(k)          Incorporation
by Reference. All exhibits and addenda attached hereto are hereby incorporated into this Lease and made a part hereof. If
there is any conflict between such exhibits or addenda and the terms of this Lease, such exhibits or addenda shall control.

 

(l)          Entire
Agreement. This Lease, including the exhibits attached hereto, constitutes the entire agreement between Landlord and Tenant
pertaining to the subject matter hereof and supersedes all prior and contemporaneous agreements, understandings, letters of intent,
negotiations and discussions, whether oral or written, of the parties, and there are no warranties, representations or other agreements,
express or implied, made to either party by the other party in connection with the subject matter hereof except as specifically
set forth herein.

 

(m)          No
Accord and Satisfaction. No payment by Tenant or receipt by Landlord of a lesser amount than the monthly installment of Base
Rent or any Additional Rent will be other than on account of the earliest stipulated Base Rent and Additional Rent, nor will any
endorsement or statement on any check or letter accompanying a check for payment of any Base Rent or Additional Rent be an accord
and satisfaction. Landlord may accept such check or payment without prejudice to Landlord's right to recover the balance of such
Rent or to pursue any other remedy provided in this Lease.

 

(n)          Medical
School Facilities. Tenant, together with its employees, will have access to the following University of Massachusetts Medical
School facilities and resources: the library (including any computers available for use in the library including use of any online
databases subscribed to from time to time by the library for use on such in-library computers), fitness center, cafeteria and
certain research cores as identified by the University from time-to-time. Such access shall be subject to any rules and regulations
of the University of Massachusetts Medical School in effect from time to time, limits on hours, closure for whatever reason, and
fees for use of the fitness center and cafeteria. Any such facilities and resources may be terminated, modified, moved or limited
in the sole discretion of the University of Massachusetts Medical School. Access may be limited or prohibited at any times for
any purposes including, but not limited to repairs, reserved functions, meetings, or any other purpose.

 

(o)          Hazardous
Activities. Notwithstanding any other provision of this Lease, Landlord, for itself and its employees, agents and contractors,
reserves the right to refuse to perform any repairs or services in any portion of the Premises which, pursuant to Tenant's routine
safety guidelines, practices or custom or prudent industry practices, require any form of protective clothing or equipment other
than safety glasses. In any such case, Tenant shall contract with parties who are acceptable to Landlord, in Landlord's reasonable
discretion, for all such repairs and services, and Landlord shall, to the extent required, equitably adjust Tenant's Share of
Operating Expenses in respect of such repairs or services to reflect that Landlord is not providing such repairs or services to
Tenant.

 

    	 	46	 

     

    

 

(p)          Public
Reporting Status. As of the Commencement Date, Tenant is subject to the public reporting
requirements of the Securities Exchange Act of 1934. Landlord acknowledges that this Lease, or material terms of this Lease may
need to be disclosed by Tenant for purposes of compliance with applicable laws. 

 

(q)          
Publicity. The content of any public announcement, press release or similar statement or publicity
concerning the entering into of this Lease must be pre-approved in writing by both Landlord and Tenant, which approval shall not
be unreasonably withheld, conditioned or delayed. Each of Landlord and Tenant will advise the Broker of the requirements of this
paragraph.

 

[Signatures on next page]

 

    	 	47	 

     

    

 

 

IN WITNESS WHEREOF, Landlord and Tenant
have executed this Lease as of the day and year first above written.

 

	 	TENANT:
	 	 
	 	MUSTANG BIO, INC.
	 	 	 
	 	By:	 
	 	Its:	 
	 	 
	 	LANDLORD:
	 	 
	 	WCS - 377 PLANTATION STREET, INC.
	 	 	 
	 	By:	 
	 	Its:	 

 

    	 	48	 

     

    

 

EXHIBIT A TO LEASE

 

DESCRIPTION OF PREMISES

 

 

    	 	A-1	 

     

    

 

EXHIBIT B TO LEASE

 

DESCRIPTION OF PROPERTY

 

The land and the building thereon in Worcester, Worcester County,
Massachusetts, on the westerly side of the easement taking of Plantation Street shown as Parcel 10A on a Plan by Cullinan Engineering
Co., Inc. entitled "Plan . of Property Owned by Worcester Business Development Corporation of Parcels 10A, 10B, 10C, Plantation
Street, Worcester, Massachusetts," dated December 16, 1992, and recorded in the Worcester District Registry of Deeds ("Registry")
in Plan Book 670, Plan 70, (the "Plan") containing 4.2929 acres, more or less, bounded and described as follows:

 

Beginning at a point on the westerly side of the easement taking
of Plantation Street at the most easterly corner of Parcel 10A; said point also being the most Southerly corner of Parcel IOC as
shown on the Plan;

 

	THENCE	South 23 degrees 14' 23" West by the westerly side of such easement taking of Plantation Street, a distance of three hundred and thirty-nine and thirteen hundredths (339.13) feet to a point at land now or formerly of University of Massachusetts Foundation, Inc.;
	 	 
	THENCE	by land now or formerly of University of Massachusetts Foundation, Inc. the following three (3) courses: North 65 degrees 28' 00" West, a distance of sixty and six hundredths (60.06) feet to a point of curvature; In a westerly direction by a curve to the left having a radius of five hundred and four and fifty hundredths (504.50) feet, an arc distance of one hundred and forty and eighty-two hundredths (140.82) feet to a point of tangency;
	 	 
	THENCE	North 81 degrees 27' 35" West, a distance of one hundred eighty-three and ninety-five hundredths (183.95) feet to a point;
	 	 
	THENCE	North 07 degrees 38' 48" West, along other land now or formerly of Worcester Business Development Corporation a distance of sixty and ninety-two hundredths (60.92) feet to a point;
	 	 
	THENCE	North 07 degrees 38' 50" West along land now or formerly of the Commonwealth of Massachusetts (Department of Mental Health), a distance of one hundred fifty (150.00) feet to a point;
	 	 
	THENCE	North 15 degrees 38' 45" West continuing along land now or formerly of Commonwealth of Massachusetts (Department of Mental Health), a distance of two hundred and seventy-seven and one hundred eighty-five thousandths (277.185) feet to a point at 10C as shown on the Plan;

 

    	 	B-1	 

     

    

 

	THENCE	South 67 degrees 06' 49" East along other land of Worcester Business Development Corporation, a distance of six hundred and fifty-nine and sixty-seven hundredths (659.67) feet to the point of beginning.

 

Together with that portion of the parcel shown on the plan as
"City of Worcester - Permanent Roadway Easement Taking December 1991" which adjoins Parcel 10A, (said parcel and Parcel
10A being hereinafter together referred to as the "Premises") bounded and described as follows,

 

BEGINNING at the Northerly line of Parcel
10A and the Southerly line of Parcel IOC as shown on the Plan;

 

	THENCE	North 23 degrees 14' 23" East forty-six and eighty-two hundredths (46.82) feet;
	 	 
	THENCE	by a curve having a radius of two thousand five hundred and seventeen and sixty hundredths (2517.60) feet, a -distance of two hundred thirty-eight and ninety hundredths (238.90) feet;
	 	 
	THENCE	by said curve a distance of twenty (20.00) feet;
	 	 
	THENCE	South 71 degrees 47' 26" East eighty-one and seventy-six hundredths (81.76) feet;
	 	 
	THENCE	South 19 degrees 17' 00" West two hundred and fifty (250.00) feet;
	 	 
	THENCE	South 30 degrees 53' 30" West three hundred and twenty-two and eighty-four hundredths (322.84) feet;
	 	 
	THENCE	South 24 degrees 32' 00" West eighty-three and fourteen hundredths (83.14) feet;
	 	 
	THENCE	North 65 degrees 28' 00" West forty and fifty-four hundredths (40.54) feet;
	 	 
	THENCE	North 23 degrees 14' 23" East three hundred and thirty-nine and thirteen hundredths (339.13) feet to the point of beginning.

 

Excepting therefrom the premises described in a Deed to Worcester
Business Development Corporation dated February 26. 1999 recorded in Book 21120, Page 120.

 

    	 	B-2	 

     

    

 

EXHIBIT C TO LEASE

 

ACKNOWLEDGMENT OF COMMENCEMENT DATE

 

This ACKNOWLEDGMENT OF COMMENCEMENT DATE
is made this _____ day of _____________, ____, between _________________________________, a _________________ limited liability
company ("Landlord"), and ______________________, a ______________ limited liability company ("Tenant"),
and is attached to and made a part of the Lease dated _______________, 2017 (the "Lease"), by and between Landlord
and Tenant. Any initially capitalized terms used but not defined herein shall have the meanings given them in the Lease.

 

Landlord and Tenant hereby acknowledge and
agree, for all purposes of the Lease, that the Commencement Date of the Base Term of the Lease is __________, _____, the Rent Commencement
Date is _________________, 20___, and the termination date of the Base Term of the Lease shall be midnight on _____________, 20___.
{After Schedule B Occupancy Date: The Schedule B Occupancy Date was: _____________.} In case of a conflict
between the terms of the Lease and the terms of this Acknowledgment of Commencement Date, this Acknowledgment of Commencement Date
shall control for all purposes.

 

IN WITNESS WHEREOF, Landlord and Tenant
have executed this ACKNOWLEDGMENT OF COMMENCEMENT DATE to be effective on the date first above written.

 

	 	TENANT:
	 	 
	 	_______________________________,
	 	a _____________ limited liability company
	 	 
	 	 	 
	 	By:	 
	 	Its:	 
	 	 
	 	 
	 	LANDLORD:
	 	 
	 	________________________________,
	 	a ____________ limited liability company

 

    	 	C-1	 

     

    

 

EXHIBIT D TO LEASE

 

RULES AND REGULATIONS

 

1.          No
sign, placard, picture, advertisement, name or notice shall be installed or displayed in any part of the outside or inside of the
Property if visible from a public area without prior written consent of the Landlord. Landlord shall have the right to remove,
at Tenant’s expense and without notice, and sign installed or displayed in violation of this rule. All approved signs or
lettering in public corridors shall be inscribed or affixed at the expense of the Tenant by a person or vendor chosen by Landlord
and in conformance with the Property standard signage program. In addition, Landlord reserves the right to change from time to
time the format of the signs or lettering and to require previously approved signs or lettering to be appropriately altered.

 

2.          Tenant
shall not obstruct any sidewalks, halls, passages, exits, entrances, elevators, escalators or stairways to the Property. The halls,
passages, exits, entrances, elevators, escalators and stairways are not for the general public, and Landlord shall in all cases
retain the right to control and prevent access thereto of all persons whose presence in the judgment of the Landlord would be prejudicial
to the safety, character, reputation and interest of the Property and its tenants. However, nothing herein contained shall be construed
to prevent such access to persons with whom any tenant normally deals in the ordinary course of its business, unless such persons
are engaged in illegal activities. No tenant and no employee or invitee of any tenant shall go upon the roof the Property.

 

3.          Tenant
shall not place any objects, including antennas, outdoor furniture, etc., in the parking areas, landscaped areas or other areas
outside of its Premises.

 

 

4.          Tenant
shall not install any radio or television antenna, loudspeaker or other device on the roof or exterior walls of the Property. Tenant
shall not interfere with radio or television broadcasting or reception from or in the Property elsewhere.

 

5.          The
directory of the Property will be provided exclusively for the display of the name and location of tenants only and Landlord reserves
the right to exclude any other names therefrom. No more than one entries on the directory located in the Property lobby designating
Tenant shall be installed.

 

6.          Except
as specifically set forth in the Lease, all cleaning services for the Premises shall be arranged exclusively through the Landlord.
Tenant shall not cause any unnecessary labor or service by carelessness or indifference to the good order and cleanliness of the
Premises, however occurring.

 

7.          Landlord
will furnish Tenant free of charge with an appropriate number of electronic access cards and parking passes. Tenant shall pay a
Ten Dollar ($10) replacement charge for the replacement of any lost access card or parking pass. Landlord may make a reasonable
charge for any keys. Tenant shall not make or have made additional keys, and Tenant shall not alter any lock or install a new or
additional locks or bolts on any door of its Premises. Tenant upon termination of its tenancy, shall delivery to Landlord the keys
of all doors which have been furnished to Tenant, and in the event of loss of any keys so furnished, shall pay Landlord therefor.

 

8.          Except
for animals assisting the disabled, no animals shall be allowed in the offices, halls, or corridors in the Property.

 

9.          Tenant
shall not disturb the occupants of the Property or adjoining buildings by the use of any radio or musical instrument or by the
making of loud or improper noises.

 

    	 	D-1	 

     

    

 

10.         If
Tenant desires telegraphic, telephonic or other electric connections in the Premises, Landlord or its agent will direct the electrician
as to where and how the wires may be introduced; and, without such direction, no boring or cutting of wires will be permitted.
Any such installation or connection shall be made at Tenant's expense.

 

11.         Tenant
shall not install or operate any steam or gas engine or boiler, or other mechanical apparatus in the Premises, except as specifically
approved in the Lease. The use of oil, gas or inflammable liquids for heating, lighting or any other purpose is expressly prohibited.
Explosives or other articles deemed extra hazardous shall not be brought into the Property.

 

12.         Parking
any type of recreational vehicles is specifically prohibited on or about the Property. Except for the overnight parking of operative
vehicles, no vehicle of any type shall be stored in the parking areas at any time. In the event that a vehicle is disabled, it
shall be removed within 48 hours. There shall be no "For Sale" or other advertising signs on or about any parked vehicle.
All vehicles shall be parked in the designated parking areas in conformity with all signs and other markings. All parking will
be open parking, and no reserved parking, numbering or lettering of individual spaces will be permitted except as specified by
Landlord.

 

13.         Tenant
shall maintain the Premises free from rodents, insects and other pests.

 

14.         Tenant
shall not use any method of heating or air conditioning such as space heaters or fans other than supplied by Landlord. Tenant shall
not waste electricity, water or air conditioning. Tenant shall keep corridor doors closed.

 

15.         Tenant
shall close and lock the doors of its Premises and entirely shut all water faucets or other water apparatus before Tenant and its
employees leave the Premises. Tenant shall be responsible for any damage or injuries sustained by other tenants or occupants of
the Property or by Landlord for noncompliance with this rule.

 

16.         Landlord
reserves the right to exclude or expel from the Property any person who, in the judgment of Landlord, is intoxicated or under the
influence of liquor or drugs or who shall in any manner do any act in violation of the Rules and Regulations of the Property.

 

17.         Tenant
shall not cause any unnecessary labor by reason of Tenant's carelessness or indifference in the preservation of good order and
cleanliness. Landlord shall not be responsible to Tenant for any loss of property on the Premises, however occurring, or for any
damage done to the effects of Tenant by the janitors or any other employee or person.

 

18.         Tenant
shall give Landlord prompt notice of any defects in the water, lawn sprinkler, sewage, gas pipes, electrical lights and fixtures,
heating apparatus, or any other service equipment affecting the Premises.

 

19.         Tenant
shall not permit storage outside the Premises, including without limitation, outside storage of trucks and other vehicles, or dumping
of waste or refuse or permit any harmful materials to be placed in any drainage system or sanitary system in or about the Premises.
The toilet rooms, toilets, urinals, wash bowls and other apparatus shall not be used for any purpose other than that for which
they were constructed. No foreign substance of any kind whatsoever shall be thrown therein, and the expense of any breakage, stoppage
or damage resulting from the violation of this rule shall be borne by Tenant who, or whose employees or invitees shall have caused
it.

 

20.         All
moveable trash receptacles provided by the trash disposal firm for the Premises must be kept in the trash enclosure areas, if any,
provided for that purpose. Tenant shall store all its trash and garbage within its Premises. Tenant shall not place in any trash
box or receptacle any material which cannot be disposed of in the ordinary and customary manner of trash or garbage disposal. All
garbage and refuse disposal shall be made in accordance with direction issues from time to time by Landlord.

 

    	 	D-2	 

     

    

 

21.         No
auction, public or private, will be permitted on the Premises or the Property.

 

22.         No
awnings shall be placed over the windows in the Premises except with the prior written consent of Landlord.

 

23.         Tenant
shall use and keep in place the Property standard window covering. Tenant shall not place anything or allow anything to be placed
against or near any doors or windows which may appear unsightly, in the opinion of the Landlord, from outside of the Premises.

 

24.         The
Premises shall not be used for lodging, sleeping or cooking or for any immoral or illegal purposes or for any purpose other than
that specified in the Lease. No gaming devices shall be operated in the Premises.

 

25.         No
cooking shall be done or permitted by any Tenant in the Premises, except that use of Underwriters’ Laboratory approved equipment
for brewing coffee, tea, hot chocolate and similar beverages shall be permitted, provided that such equipment and is in accordance
with all applicable federal, state and city laws, codes, ordinances, rules and regulations.

 

26.         Except
as approved by Landlord, Tenant shall to mark, drive nails, screw or drill into partitions, woodwork or plaster or in any way deface
the Premises. Tenant shall not curt or bore holes for wires. Tenant shall not affix any floor covering to the floor of the Premises
in any manner except as approved by Landlord. Tenant shall repair any damage resulting from noncompliance with this rule.

 

27.         Tenant
shall ascertain from Landlord the maximum amount of electrical current which can safely be used in the Premises, taking into account
the capacity of the electrical wiring in the Property and the Premises and the needs of other tenants, and shall not use more than
such safe capacity. Landlord's consent to the installation of electric equipment shall not relieve Tenant from the obligation not
to use more electricity than such safe capacity.

 

28.         Tenant
assumes full responsibility for protecting the Premises from theft, robbery and pilferage.

 

29.         Tenant
shall pay on demand the cost of replacement of any glass doors broken in or on the perimeter of the Premises during the continuance
of the Lease if same is broken as a result of tenant, its employees or agents negligence, unless the glass shall be broken by Landlord
its employees or agents.

 

30.         Tenant
shall not install, maintain or operate upon the Premises any vending machines or video game machines.

 

31.         Landlord
may waive any one or more of these Rules and Regulations for the benefit of any particular tenant or tenants, but no such waiver
by Landlord shall be construed as a waiver of such Rules and Regulations in favor of any other tenant or tenants, nor prevent Landlord
from thereafter enforcing any such Rules and Regulations.

 

32.         Canvasing,
soliciting and peddling in or about the Property is expressly prohibited.

 

33.         For
the benefit of all tenants, Landlord shall have the right to reasonably limit freight elevator use during peak use hours.

 

34.         Tenant
shall not install or operate on the Premises any machinery or mechanical devices of a nature not directly related to Tenant's ordinary
use of the Premises and shall keep all such machinery free of vibration, noise and air waves which may be transmitted beyond the
Premises.

  

    	 	D-3	 

     

    

 

35.         The
Rules and Regulations are in addition to, and shall not be construed to in any way modify or amend, in whole or in part, the terms,
covenants, agreements and conditions of any lease of any premises on the Property. Landlord shall have the right to amend these
Rules and Regulations at any time during the term hereof, with notice.

 

36.         Smoking
and the use of tobacco is not permitted in the Building, at the Property, or on the grounds of Biotech Park and the University
of Massachusetts Medical School.

 

    	 	D-4	 

     

    

 

EXHIBIT E

 

TENANT’S PERSONAL PROPERTY (REMOVABLE
INSTALLATIONS)

 

To-be-installed
generator, if installed pursuant to Section 7(c)(vii).

 

    	 	E-1	 

     

    

 

EXHIBIT F

 

TENANT’S SURRENDER PLAN

 

Tenant Surrender Plan

 

Name of Tenant

Addressed of Leased Space

  

Prepared for:

 

Owner

Address

 

Prepared by:

TENANT NAME

CITY, STATE

 

Date:

Month Year

 

    	 	F-1	 

     

    

 

Contents

 

	 	 	Page
	 	 	 
	1.0	Introduction	F-3
	1.1	General Site Information	F-3
	1.2	Chemical, Biological, and Radioactive Agents	F-3
	1.2.1	Chemical Agents	F-4
	1.2.2	Biological Agents	F-4
	1.2.3	Radiological Agents	F-4
	 	 	 
	2.0	Equipment	F-5
	2.1	Equipment Inventory	F-5
	2.2	Disposition of Equipment	F-5
	 	 	 
	3.0	Waste Management and Wastewater Discharges	
	3.1	Hazardous Waste	
	3.2	Biological Waste	
	3.3	Radiological Waste	
	3.4	Wastewater Discharges	
	 	 	 
	4.0	Decontamination Procedures	
	4.1	Equipment	
	4.2	Disposition of Equipment	 
	4.2.1	Chemical Use Areas	
	4.2.2	Biological Agent Use Areas	
	4.2.3	Radiological Agent Use Areas	
	4.3	Final Waste Shipments	
	 	 	 
	5.0	Permits	
	 	 	 
	6.0	Spills	

 

List of Appendices

Appendix A

 

    	 	F-2	 

     

    

 

1.0           Introduction

 

The purpose of this Surrender Plan is to provide detailed information
regarding decommissioning procedures followed by a tenant at the conclusion of its tenancy at the leased space (“the Premises”).
This Surrender Plan will be used by Owner to evaluate, from a health and safety standpoint, whether the space will be suitable
for re-occupancy by a biotechnology tenant. This Surrender Plan includes information regarding the tenant’s operations, types
of hazardous materials used, waste management practices, decontamination procedures, and permit closure/transfer documentation.

 

1.1           General
Tenant Information

 

	Name of tenant	 
	Address of leased space (include Suite numbers)	 
	Length of time at leased space	 
	Approximate square footage of leased space	Office space:  	 
	Lab space:	 
	Total:	 
	Tenant contact (for follow-up questions regarding Surrender Plan)	Name	 
	Title	 
	Years with company	 
	Telephone number	 
	E-mail address	 
	Lease end date	 
	Scheduled date for vacating leased space	 
	Location company is moving to	 
	Site plan included?	    No        Yes, see Appendix ____
	General description of operations (include Biosafety level(s) of laboratory spaces, the nature of the company’s business, and types of activities conducted on-site)
	 
	 

 

1.2         Chemical,
Biological, and Radioactive Agents

 

This section provides information regarding chemical, biological
(including vivariums), radiological agents (collectively "Agents") used on the Premises.

 

    	 	F-3	 

     

    

 

1.2.1      Chemical
Agents

 

Identify all chemicals used at the property, including name,
quantity(ies) used, maximum volume of storage containers, etc., OR refer to a chemical inventory to be included in an Appendix
to this Plan.

  

1.2.2      Biological
Agents

 

Identify all biological agents used at the property, including
name, quantity(ies) used, maximum volume of storage containers, etc., OR refer to a biological agent inventory to be included in
an Appendix to this Plan.

 

1.2.3      Radiological
Agents

 

Identify all radiological materials used at the property, including
name, quantity(ies) used, maximum volume of storage containers, etc., OR refer to a radiological material inventory to be included
in an Appendix to this Plan.

 

    	 	F-4	 

     

    

 

2.0         Equipment

 

The section describes the equipment used by the tenant, and
identifies which equipment will be moved off-site and which equipment will remain on the Premises.

 

2.1         Equipment
Inventory

 

Please provide an inventory of equipment, instruments, and laboratory
apparatus (collectively "Equipment").

 

2.2         Disposition
of Equipment

 

Describe Equipment to be removed from the Premises, and Equipment
to remain at the Premises. Equipment to remain at the Premises which is not the property of Owner.

 

    	 	F-5	 

     

    

 

EXHIBIT G

 

PLAN SHOWING RESERVED PARKING

 

    	 	G-1	 

     

    

 

 

    	 	G-2	 

     

    

 

EXHIBIT H

 

WORK LETTER WITH RESPECT TO

TENANT’S WORK

 

Landlord and Tenant agree as follows with
respect to the improvements to be installed in the Premises:

 

1.          Landlord’s
Work.

 

A.    Landlord,
at Landlord’s sole cost and expense, shall put the Premises into base building condition as set forth in Schedule 1 attached
hereto and hereby made a part hereof (“Landlord’s Work”) on or before on or before the Commencement Date
provided that that portion of Landlord’s Work described as the Concurrent Work on Schedule 1 (collectively, the “Concurrent
Work”) is to be performed by Landlord concurrently with the performance of the Tenant’s Work (as such term is hereinafter
defined) in a timely manner so as not to delay completion of the Tenant’s Work.

 

2.          Tenant’s
Work.

 

A.    Tenant’s
Work. Tenant shall provide the construction material, hardware and equipment and the labor to construct and install the
improvements to the Premises described in the Plans (as that term is hereinafter described). The material, hardware, equipment
and labor as incorporated into the Premises pursuant to the Plans are herein collectively referred to as the “Tenant’s
Work”. Subject to the provisions of this Exhibit F (the “Work Letter”), Tenant shall proceed
diligently to cause the Tenant’s Work approved by Landlord to be completed in accordance with the terms and conditions of
the Lease and this Work Letter.

 

B.     Plans.
Tenant agrees to cause its architect and engineer to prepare plans and specifications for Tenant’s Work (which shall include
(i) furniture plans showing details of space occupancy; (ii) sprinkler locations; (iii) reflected ceiling plans; (iv) partition
and door location plans; (v) electrical and telephone plans noting any special requirements; (vi) fire safety systems; (vii) detail
plans; (viii) finish plans and schedules and also specifications for the Tenant’s Work to be performed in the Premises; (ix)
mechanical and electrical, fire alarm, life safety, and plumbing drawings for the Premises and deliver said drawings to Landlord.
Landlord agrees to either approve or disapprove said architectural construction drawings in writing within ten (10) business days
of receipt thereof by Landlord. Failure to approve or disapprove within such ten (10) business day period shall result in said
drawings being deemed approved by Landlord. If Landlord disapproves of said drawings, Landlord agrees to advise Tenant in writing
generally of the required changes. Tenant shall deliver to Landlord architectural construction drawings revised pursuant to Landlord’s
comments within ten (10) business days of receipt of Landlord’s comments, after which Landlord shall have a period of two
(2) business days to either approve or disapprove said drawings in writing, and if Landlord fails to give written notice of its
approval or disapproval of the revisions within such two (2) business day period shall result in said revisions being deemed approved
by Landlord. The revision procedure shall be repeated until Landlord approves the architectural construction drawings for the Premises.
The plans and specifications described above are referred to as the “Plans”.

 

    	 	H-1	 

     

    

 

C.     No
Representations by Landlord. Neither review nor approval by Landlord of any of the Plans shall constitute a representation
or warranty by Landlord that such Plans either (i) are complete or suitable for their intended purpose or (ii) comply with applicable
laws, ordinances, codes and regulations, it being expressly agreed by Tenant that Landlord assumes no responsibility or liability
whatsoever to Tenant or to any other person or entity for such completeness, suitability or compliance.

 

3.          Cost
of Tenant’s Work.

 

A.    General
Contract. Prior to commencement of any portion of the Tenant’s Work, Tenant shall obtain a contract to perform the
Tenant’s Work by bidding the Tenant’s Work to one (1) or more of those licensed general contractors approved by Landlord,
which approval shall not be unreasonably withheld or delayed. Landlord confirms its approval of Hodess Construction Corporation
(100 John L Dietsch Sq, North Attleboro, MA 02763, Ph: 508.695.1012), or any of its wholly owned subsidiaries as Contractor. Promptly
after entering into a general contract for Tenant’s Work with its selected general contractor (the “Contractor”)
Tenant agrees to promptly give Landlord a copy of the contract. The Contractor shall notify Landlord in advance of the identities
of all subcontractors who will be performing work in the Premises. All such subcontractors shall be licensed. Tenant shall not
be relieved of any of its obligations under this Work Letter by the fact that Landlord approved the Contractor or the fact that
Landlord may have notice of subcontractors used by the Contractor.

 

B.     Allowance.
Landlord shall reimburse Tenant up to Thirty Dollars ($30.00) per square foot of Rentable Area in the Premises with respect to
Section A (14,222 RSF) (the “Phase I Allowance”) and Forty Dollars ($40.00) per square foot of Rentable Area
in the Premises with respect to Section B (12,821 RSF) (the “Phase II Allowance” and collectively with the Phase
I Allowance, the “Allowance”) for hard (and as permitted below, soft) costs of the Tenant’s Work. Tenant
shall pay all costs of the Tenant’s Work in excess of the Allowance. All amounts shall be paid by Tenant within thirty (30)
days after Tenant’s receipt of invoices therefor. The Phase I Allowance shall be available to Tenant commencing on the Commencement
Date and expiring on the expiration of the first Lease Year, up to Ten Dollars ($10.00) per square foot of the Phase II Allowance
shall be available for demolition costs associated with preconstruction demolition of Section B, commencing on such demolition
work with the remaining balance of the Phase II Allowance available to Tenant commencing on the Section B Occupancy Date and expiring
one year thereafter. Tenant may use up to $3.00 per square foot of Rentable Area in the Premises of the Allowance not required
to pay hard costs for non-hard cost items, including soft costs, cabling, telephone, furniture and moving.

 

C.    Coordination
Fee. Tenant shall pay a plan review, construction coordination and management, and overhead fee to Landlord in an amount
equal to the lesser of (i) two percent (2%) of Landlord’s total Allowance contribution, or (ii) Landlord’s actual costs,
to cover Landlord’s plan review, coordination, supervision and overhead and related expenses allocable to such work (the
“Coordination Fee”). The Coordination Fee shall be deducted by Landlord from the Allowance, in an amount not
to exceed two percent (2%) of the amount disbursed.

 

    	 	H-2	 

     

    

 

D.    Payment
of Allowance. Landlord shall make payments of the Allowance only one time per month upon receipt of invoices, sworn statements,
mechanics lien waivers as provided herein and such other documentation as Landlord may reasonably request. Landlord shall have
no obligation to make any payment of the Allowance at any time that Tenant is in default hereunder or under the Lease.

 

E.     [Intentionally
deleted.]

 

F.     Draw
Requests. Tenant shall make draw requests based upon costs incurred for completed work as of the date of the draw request.
Tenant shall present to Landlord a letter requesting a disbursement of funds, invoices (or paid receipts for each item paid by
Tenant and for which Tenant is seeking reimbursement), a copy of any cancelled checks pursuant to which such invoice has been paid,
and, with respect to any construction to any portion of the Premises, such lien waivers (for lienable items) required by the Landlord.
The lien waiver from the general contractor and from each subcontractor and material supplier must be delivered with each draw
request. Landlord shall have no obligation to make a payment until all waivers for the prior draw are submitted.

 

G.     Payment
of Draw Requests. Draw requests shall be submitted to Landlord no more often than monthly. Not later than five (5) business
days after receipt of a draw request from Tenant, Landlord will review the applicable portion of Tenant’s Work and Tenant’s
draw request and advise Tenant in writing of any respects in which the draw request is disapproved and the reason for such disapproval.
Such advice need not comply with the notice provisions of the Lease. Draw requests shall be paid, subject to the foregoing approval
procedure, not later than fifteen (15) business days after the draw request is received by Landlord. Landlord and Tenant agree
to cooperate in attempting to resolve disapproved portions of each draw request.

 

H.    [Intentionally
deleted.]

 

4.          Access
By Tenant; Work in Harmony.

 

Landlord shall permit
Tenant and Tenant’s agents, representatives, employees, suppliers, contractors, subcontractors, mechanics and workmen (i)
to enter the Premises prior to the completion of the Landlord’s Work, and (ii) to access base building systems, including
without limitation, chilled water, hot water, electrical and life-safety protection. Tenant agrees for itself and its agents, representatives,
employees, suppliers, contractors, subcontractors, workmen, mechanics, and suppliers, that all such parties shall work in harmony
and not unreasonably interfere with Landlord and Landlord’s agents, representatives, employees, suppliers, contractors, subcontractors,
mechanics, and workmen in doing the Landlord’s Work in the Premises or work for other tenants and occupants of the Building.

 

    	 	H-3	 

     

    

 

5.          Construction
Requirements.

 

A.    Conditions
of Entry. Tenant agrees that the entry into the Premises by Tenant and its contractors shall be deemed to be under all
of the terms, covenants, conditions and provisions of the Lease except as to the covenant to pay Rent and Tenant further agrees
that in connection therewith Landlord shall not be liable in any way for any injury, loss or damage which may occur to any of Tenant’s
employees, agents or contractors, to Tenant’s Work or installations made in the Premises or to property placed therein prior
to the Commencement Date and thereafter, the same being at Tenant’s sole risk. In addition, Tenant shall require all entities
performing work on behalf of Tenant to provide protection for existing improvements to an extent that is satisfactory to Landlord
and shall allow Landlord access to the Premises, for inspection purposes, at all times during the period when Tenant is undertaking
construction activities therein. Tenant agrees to protect, indemnify, defend and hold Landlord and its agents, partners, contractors
and employees harmless from and against any and all losses, damages, liabilities, claims, liens, costs and expenses, including
reasonable attorneys’ fees, of whatever nature, including those to the Premises, the Building (including the Landlord’s
Work), any other property of Landlord, or to the person and property of Tenant, its employees, agents, invitees, licensees and
others arising out of or in connection with the activities of Tenant or any entity performing work on behalf of Tenant in or about
the Premises or the Building. Further, Tenant shall cause such damage to be repaired at Tenant’s expense and if Tenant fails
to cause such damage to be repaired promptly upon Landlord’s demand therefor, Landlord may in addition to any other rights
or remedies available to Landlord under this Lease or at law or equity cause such damage to be repaired, in which event Tenant
shall promptly upon Landlord’s demand pay to Landlord the cost of such repairs;

 

B.     Ingress
and Egress. All contractors and subcontractors shall use only those service corridors and service entrances designated
by Landlord for ingress and egress of personnel, and the delivery and removal of equipment and material through or across any common
areas of the Building shall only be permitted with the written approval of Landlord and during hours determined by Landlord. Landlord
shall have the right to order Tenant or any contractor or subcontractor who repeatedly violates the above requirements to cease
work in the Building and leave the Building and remove its equipment and its employees from the Building and, at Landlord’s
option, restore any portion of the Building on which it has done work to its original condition;

 

C.     Trash
Removal. During the performance of Tenant’s Work and Tenant’s fixturing, Landlord may provide trash removal
service from a location designated by Landlord. Tenant shall be responsible for breaking down boxes and placing trash in Landlord’s
containers at such designated location. Tenant shall accumulate its trash in containers supplied by Landlord and Tenant shall not
permit trash to accumulate within the Premises or in the corridors or public areas adjacent to the Premises. Tenant shall cause
each entity employed by it to perform work on the Premises to abide by the provisions of this Work Letter as to the storage of
trash and shall require each such entity to perform its work in a way that dust or dirt is contained entirely within the Premises
and not within any other portion of the Building and shall cause Tenant’s contractors to leave the Premises in broom-clean
condition at the end of each day. Should Landlord deem it necessary to remove Tenant’s trash because of accumulation, Tenant
shall pay to Landlord an additional reasonable charge for such removal on a time and material basis. The cost to Tenant for Landlord
removing such trash will be based on reasonable and competitive cost which Tenant could have secured independently had Landlord
not provided such service;

 

    	 	H-4	 

     

    

 

D.    Performance
of Work. Tenant agrees that all services and work performed on the Premises by, on behalf of, or for the account of Tenant,
including installation of telephones, carpeting, materials and personal property delivered to the Premises shall be done in a first-class
workmanlike manner using only good grades of material, in compliance with Legal Requirements including the ADA, and shall be performed
only by persons covered by a collective bargaining agreement with the appropriate trade union. Tenant at Tenant’s cost shall
secure all requisite permits and approvals for Tenant’s Work including, but not limited to, a Building Permit and a Certificate
of Occupancy issued by the City of Worcester;

 

E.     Insurance.
Tenant shall provide, or shall cause Tenant’s General Contractor to provide, insurance which satisfy the requirements of
Section 17 of this Lease, shall include (if permitted by the insurer) a waiver of subrogation in favor of Landlord, and shall insure
Landlord and Tenant, as their respective interests may appear, and shall also provide insurance during the course of construction
with respect to the following:

 

		1.	Comprehensive General Liability Insurance. Comprehensive
general liability insurance as required by Section 17 of this Lease shall be in an aggregate amount, which may include umbrellas,
of not less than $3,000,000 (a portion of which coverage may be evidenced by an umbrella policy of liability insurance), and shall
name Landlord as additional insured;

 

		2.	Worker’s Compensation Insurance. Worker’s
compensation insurance, to the extent required by law;

 

		3.	Builders Risk Insurance. Special Purpose (formerly
known as “All Risk”) Builders Risk Insurance on 100% of the cost of the Tenant Improvements, covering damage to such
improvements; and

 

		4.	Automobile Liability Insurance. Automobile Liability
coverage with bodily injury limits of at least $1,000,000.00 per accident and $500,000.00 per accident for property damage.

 

F.     Indemnification.
EXCEPT TO THE EXTENT SUCH COSTS, LOSSES, LIABILITIES OR ACTIONS RESULT FROM LANDLORD’S NEGLIGENCE AND/OR WILLFUL MISCONDUCT,
OR THE NEGLIGENCE OR WILLFUL MISCONDUCT OF LANDLORD’S EMPLOYEES, CONTRACTORS OR AGENTS, TENANT SHALL INDEMNIFY AND HOLD LANDLORD
HARMLESS FROM AND AGAINST ALL COSTS (INCLUDING REASONABLE ATTORNEY’S FEES AND COSTS OF SUIT), LOSSES, LIABILITIES OR CAUSES
OF ACTION ARISING OUT OF OR RELATING TO TENANT’S CONSTRUCTION OF THE TENANT’S WORK, INCLUDING, BUT NOT LIMITED TO,
ANY MECHANIC’S OR MATERIALMEN’S LIENS ASSERTED IN CONNECTION THEREWITH.

 

6.          Miscellaneous.

 

A.    Except
as expressly set forth herein, Landlord has no other agreement with Tenant and has no other obligation to do any other work or
pay any amounts with respect to the Premises. Any other work in the Premises which may be permitted by Landlord pursuant to the
terms and conditions of the Lease shall be done at Tenant’s sole cost and expense and in accordance with the terms and conditions
of the Lease.

 

1.          This
Work Letter shall not be deemed applicable to any additional space added to the original Premises (i.e., both Section A and Section
B of the Premises) at any time or from time to time, whether by any options under the Lease or otherwise, or to any portion of
the original Premises or any additions thereto in the event of a renewal or extension of the initial term of the Lease, whether
by any options under the Lease or otherwise, unless expressly so provided in the Lease or any amendment or supplement thereto.

 

    	 	H-5	 

     

    

 

2.          The
failure by Tenant to pay any monies due Landlord pursuant to this Work Letter within the time period herein stated shall be deemed
a Default under the terms of the Lease for which Landlord shall be entitled to exercise all remedies available to Landlord for
nonpayment of Rent, following applicable notices and cure periods. All late payments of such monies shall bear interest and shall
be subject to a late charge in the same manner as late payments of Rent pursuant to the Lease.

 

3.          The
indemnification and exculpatory provision set forth in Section 16 of the Lease as well as all other terms and provisions of
the Lease, insofar as they are applicable to this Work Letter, are hereby incorporated herein by this reference.

 

4.          Tenant
shall be solely responsible to determine at the site all dimensions of the Premises and the Building which affect any work that
may be performed by Tenant or any of Tenant’s contractors hereunder.

 

5.          All
of Tenant’s Work paid for by Landlord may be depreciated by Landlord.

 

    	 	H-6	 

     

    

 

SCHEDULE 1

 

LANDLORD’S WORK

 

 

Landlord shall deliver the Premises with all base building systems,
including but not limited to HVAC, electrical, life safety, plumbing systems (including DI water), in good working condition as
of the Commencement Date.

 

Landlord, at Landlord’s sole cost and expense, shall provide
Tenant with secured, keyed access to all laboratory and office space under lease by the Commencement Date.

 

The following is Concurrent Work: Tenant acknowledges that Landlord
needs to modify the 1st floor Building egress in accordance with the revised egress plan delivered to Tenant and dated May 24,
2017. Although this work will not be completed prior to the Commencement Date, it will be completed promptly thereafter so as not
to negatively impact Tenant’s construction or occupancy of the Premises.

 

    	 	H-7	 

     

    

 

EXHIBIT I

 

HAZARDOUS MATERIALS LIST

 

	Material	Classification	Quantity 

(max)	Storage	Comment
	 	 	 	 	 
	Human blood	BL2	6L	RT	No long-term storage
	 	 	 	 	 
	Primary human cells	BL2	<1L	N2	 
	 	 	 	 	 
	Lentivirus	BL2	<1L	-80C/N2	Replication incompetent
	 	 	 	 	 
	Adeno associated virus (AAV)	BL2	<1L	-80C/N2	Replication incompetent
	 	 	 	 	 
	Retrovirus	BL2	<1L	-80C/N2	Replication incompetent
	 	 	 	 	 
	Ethanol	flammable	1gal	RT	Stored in fire safe cabinet
	 	 	 	 	 
	Methanol	flammable	1gal	RT	Stored in fire safe cabinet
	 	 	 	 	 
	Propanol	flammable	1gal	RT	Stored in fire safe cabinet
	 	 	 	 	 
	Hydrocloric acid (HCL)	acid	1L	RT	Stored in corrosion safe cabinet
	 	 	 	 	 
	NaOH	base	1L	RT	Stored in corrosion safe cabinet

 

    	 	I-1

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