Document:

EX-10.14

 Exhibit 10.14 

Execution Copy 
 LEASE 

BY 
 480 ARSENAL GROUP
LLC, LANDLORD 
 TO 

C4 THERAPEUTICS, INC., TENANT 
  

 
 LINX Building 

490 Arsenal Way 
 Watertown,
Massachusetts 02472 

 TABLE OF CONTENTS 

 

					
	 	  	Page	 
	 ARTICLE 1: BASIC TERMS
	  	 	1	 
	 ARTICLE 2: PREMISES, APPURTENANT RIGHTS AND RIGHT OF FIRST OFFER
	  	 	4	 
	 2.01. Lease of Premises; Appurtenant Rights
	  	 	4	 
	 2.01(a) General
	  	 	4	 
	 2.01(b) Exclusions
	  	 	4	 
	 2.01(c) Appurtenant Rights
	  	 	4	 
	 2.01 (d) Reservations
	  	 	4	 
	 2.01 (e) Measurement.
	  	 	5	 
	 2.01(f) H3 Room; PH Systems; Control Areas; Bulk Tanks
	  	 	5	 
	 2.01 (g) Parking
	  	 	5	 
	 2.02. Right of First Offer
	  	 	6	 
	 ARTICLE 3: LEASE TERM
	  	 	8	 
	 3.01. Lease Term; Construction
	  	 	8	 
	 3.02. Hold Over
	  	 	8	 
	 3.03. Right to Extend
	  	 	9	 
	 3.03(a) Extension Term
	  	 	9	 
	 3.03(b) Extension Term Base Rent
	  	 	9	 
	 3.03(c) Determination of Fair Market Rent
	  	 	9	 
	 3.03(d) Rent Continuation
	  	 	10	 
	 ARTICLE 4: RENT
	  	 	10	 
	 4.01. Base Rent
	  	 	10	 
	 4.02. Additional Rent
	  	 	10	 
	 4.02(a) General
	  	 	10	 
	 4.02(b) Allocation of Certain Operating Costs
	  	 	11	 
	 4.03. Late Charge
	  	 	11	 
	 4.04. Interest
	  	 	11	 
	 4.05. Method of Payment
	  	 	11	 
	 4.06. Tenant’s Pro Rata Share
	  	 	12	 
	 ARTICLE 5: TAXES
	  	 	12	 
	 5.01. Taxes
	  	 	12	 
	 5.02. Definition of “Taxes”
	  	 	12	 
	 5.03. Personal Property Taxes
	  	 	13	 
	 ARTICLE 6: BUILDING SERVICES AND SPECIAL BUILDING FACILITIES
	  	 	13	 
	 6.01. Utility Services
	  	 	13	 
	 6. 02. Building Services and Building Systems
	  	 	14	 
	 6.03. Service Interruptions
	  	 	16	 
	 ARTICLE 7: OPERATING EXPENSES
	  	 	17	 
	 7.01. Operating Expenses
	  	 	17	 
	 ARTICLE 8: INSURANCE
	  	 	20	 
	 8.01. Coverage
	  	 	20	 
	 8.02 Avoid Action Increasing Rates
	  	 	21	 
	 8.03. Waiver of Subrogation
	  	 	21	 
	 8.04. Landlord’s Insurance
	  	 	21	 
	 ARTICLE 9: USE OF PREMISES
	  	 	22	 
	 9.01. Permitted Uses
	  	 	22	 

  
 i 

					
	 9.02. Indemnification
	  	 	22	 
	 9.03. Compliance With Legal Requirements
	  	 	22	 
	 9.04. Hazardous Substances
	  	 	23	 
	 9.05. Signs
	  	 	26	 
	 9.06. Landlord’s Access
	  	 	26	 
	 9.07. Landlord’s Rules and Regulations
	  	 	27	 
	 9.08. Compliance With Insurance Requirements
	  	 	27	 
	 9.09. Floor Load; Heavy Machinery
	  	 	27	 
	 9.10. LEED/Energy Conservation Measures
	  	 	27	 
	 9.11. Emergency Generator
	  	 	28	 
	 9.12. Rooftop Rights
	  	 	30	 
	 ARTICLE 10: CONDITION AND MAINTENANCE OF PREMISES AND PROPERTY
	  	 	31	 
	 10.01. Existing Conditions
	  	 	31	 
	 10.02. No Landlord Liability
	  	 	31	 
	 10.03. Landlord’s Repair and Maintenance Obligations
	  	 	32	 
	 10.04. Tenant’s Obligations
	  	 	32	 
	 10.04(a) Repair and Maintenance
	  	 	32	 
	 10.04(b) Landlord’s Right to Cure.
	  	 	33	 
	 10.05. Tenant Work
	  	 	33	 
	 10.05(a) General
	  	 	33	 
	 10.05(b) Construction Documents
	  	 	34	 
	 10.05(c) Performance
	  	 	34	 
	 10.05(d) Payment
	  	 	35	 
	 10.05(e) Other
	  	 	35	 
	 10.05(f) Removal at Conclusion of Term
	  	 	36	 
	 10.05(g) Initial Tenant Work
	  	 	36	 
	 10.06. Condition upon Termination
	  	 	36	 
	 10.07. Decommissioning of the Premises
	  	 	37	 
	 ARTICLE 11: DAMAGE OR DESTRUCTION CONDEMNATION
	  	 	38	 
	 11.01. Damage or Destruction of Premises
	  	 	38	 
	 11.02. Eminent Domain
	  	 	38	 
	 ARTICLE 12: ASSIGNMENT AND SUBLETTING
	  	 	39	 
	 12.01. Landlord’s Consent Required
	  	 	39	 
	 12.02. Terms
	  	 	40	 
	 12.03. Related Party Transfers
	  	 	40	 
	 12.04. Procedures
	  	 	40	 
	 12.05. Excess Rents
	  	 	40	 
	 12.06. No Release
	  	 	41	 
	 ARTICLE 13: EVENTS OF DEFAULT AND REMEDIES
	  	 	41	 
	 13.01. Event Default
	  	 	41	 
	 13.02. Remedies for Default
	  	 	43	 
	 13.02(a) Reletting Expenses Damages
	  	 	43	 
	 13.02(b) Termination Damages
	  	 	43	 
	 13.02(c) Lump Sum Liquidated Damages
	  	 	43	 
	 13.02(d) Remedies Cumulative; Late Performance
	  	 	43	 
	 13.02(e) Landlord’s Curing
	  	 	43	 
	 ARTICLE 14: SECURITY DEPOSIT
	  	 	44	 
	 ARTICLE 15: PROTECTION OF LENDERS/GROUND LANDLORD
	  	 	45	 
	 15.01. Subordination and Superiority of Lease
	  	 	45	 
	 15.02. Rent Assignment
	  	 	46	 
	 15.03. Other Instruments
	  	 	46	 

  
 ii 

					
	 15.04. Estoppel Certificates
	  	 	47	 
	 15.05. Financial Condition
	  	 	47	 
	 ARTICLE 16: MISCELLANEOUS PROVISIONS
	  	 	47	 
	 16.01. Landlord’s Consent Fees
	  	 	47	 
	 16.02. Landlord’s Default
	  	 	47	 
	 16.03. Quiet Enjoyment
	  	 	48	 
	 16.04. Interpretation
	  	 	48	 
	 16.05. Notices
	  	 	48	 
	 16.06. No Recordation
	  	 	48	 
	 16.07. Corporate Authority
	  	 	48	 
	 16.08. Joint and Several Liability
	  	 	48	 
	 16.09. Force Majeure
	  	 	48	 
	 16.10. No Warranties; Limitation of Landlord’s Liability
	  	 	49	 
	 16.10(a) No Warranties
	  	 	49	 
	 16.10(b) Limitation On Landlord’s Liability
	  	 	49	 
	 16.11. No Brokers
	  	 	49	 
	 16.12. No Waiver; Accord and Satisfaction
	  	 	49	 
	 16.13. Applicable Law and Construction
	  	 	50	 
	 16.14. Waiver of Trial by Jury
	  	 	50	 
	 16.15. No Representations or Inducements
	  	 	50	 
	 16.16. No Surrender
	  	 	50	 
	 16.17. Arbitration
	  	 	51	 
	 16.17(a.) Initial Construction Disputes
	  	 	51	 
	 16.17(b) Arbitration Procedures
	  	 	51	 
	 16.18. Patriot Act
	  	 	52	 

  
 iii 

 LEASE 

ARTICLE 1: BASIC TERMS 
 The following terms used in this
Lease shall have the meanings set forth below. Other terms are defined throughout this Lease and indexed on
 Schedule 1 attached hereto and made a part hereof. 
  

			
	Date of Lease:	  	As of July 5, 2017
		
	Landlord:	  	480 Arsenal Group LLC,
		  	a Massachusetts limited liability company
		
	Original Address of Landlord:	  	c/o Boylston Properties
		  	800 Boylston Street, Suite 1390
		  	Boston, Massachusetts 02199
		  	Attention: Mark A. Deschenes
		
		  	With copies to:
		
		  	Sherin and Lodgen, LLP
		  	101 Federal Street
		  	Boston Massachusetts 02110
		  	Attention: Peter Friedenberg, Esq.
		
	Tenant:	  	C4 Therapeutics, Inc.,
		  	a Delaware corporation
		
	Original Address of Tenant:	  	675 West Kendall Street
		  	Cambridge, Massachusetts 02142
		  	Attention: President
		
		  	With copies to:
		
		  	Krokidas & Bluestein LLP
		  	Attention: Kathryn Murphy, Esq.
		  	600 Atlantic Avenue, 19th Floor
		  	Boston, MA 02210
		
		  	and:
		
		  	Goodwin Proctor LLP
		  	Attention: Lawrence S. Wittenberg
		  	53 State Street
		  	Boston, MA 02109
		
	Guarantor:	  	N/A
		
	Address of Property:	  	490 Arsenal Way
		  	Watertown, Massachusetts 02472

			
		
	Building and Property:	  	The building Known as and numbered 490 Arsenal Way, containing a total rentable area of approximately 185,015 rentable square feet (“Building”), in the City Known as the Town of Watertown, Massachusetts, situated on
a parcel of land described in Exhibit A attached hereto (the Building and such parcel of land, together with all other improvements now or hereafter located thereon, are collectively referred to as the
(“Property”)).
		
	Premises:	  	A total rentable area of 45,559 rentable square feet, consisting of 463 rentable square feet on the first floor of the West Wing of the Building and 45,096 rentable square feet on the second floor of the West Wing of the Building,
as shown on Exhibit B attached hereto, as measured in accordance with the provisions of Section 2.01(e).
		
	Tenant’s Pro Rata Share:	  	24.62%. See Section 4.06.
		
	Term Commencement Date:	  	The date on which both (a) this Lease is executed and unconditionally delivered by both Landlord and Tenant, and (b) the Letter of Credit is delivered to Landlord.
		
	 Term:

      Initial Term:
	  	The period commencing on the Term Commencement Date and expiring on the day (“Termination Date”) which is the last day of the tenth (10th) Lease Year.
		
	      Extension Term:	  	One (1) extension term of five (5) Lease Years. See Section 3.03(a).
		
	Rent Commencement Date:	  	May 1, 2018.
		
	Lease Year:	  	The first Lease Year begins at 12:01 a.m. on May 1, 2018 and ends at 11:59 p.m. on April 30, 2019. Each subsequent Lease Year ends at 11:59 p.m. 12 months after the preceding Lease Year.
		
	Estimated Delivery Date:	  	July 1, 2017
		
	Permitted Uses:	  	General office, laboratory, research and development, and any other lawful use, all to the extent permitted under the watertown Zoning Ordinance as in effect from time to time.
		
	Landlord’s Broker:	  	Cushman & Wakefield
		
	Tenant’s Broker:	  	Jones Lang LaSalle
		
	Security Deposit:	  	Letter of Credit in the amount of $2,577,150.00.

  
 2 

			
	Parking Allotment:	  	Parking spaces at a ratio of 3.1 parking spaces per 1,000 rentable square feet in the Premises (initially, 141 parking spaces), including ten (10) reserved covered spaces initially located as shown on Exhibit A attached
hereto. See Section 2.01(g).
		
	 Base Rent:

      Initial Term:
	  	The following amounts:

  

													
	 Period
	  	Rate per
rentable s.f.	 	  	Monthly
Amount	 	  	Annual Amount	 
	 Rent Commencement Date to 12/31/2019
	  	$	47.00	 	  	$	178,439.42	 	  	$	2,141,273.00	 
	 1/1/2020 -12/31/2020
	  	$	48.41	 	  	$	183,792.60	 	  	$	2,205,511.19	 
	 1/1/2021 -12/31/2021
	  	$	49.86	 	  	$	189,297.65	 	  	$	2,271,571.74	 
	 1/1/2022 - 12/31/2022
	  	$	51.36	 	  	$	194,992.52	 	  	$	2,339,910.24	 
	 1/1/2023 - 12/31/2023
	  	$	52.90	 	  	$	200,839.26	 	  	$	2,410,071.11	 
	 1/1/2024 - 12/31/2024
	  	$	54.49	 	  	$	206,875.83	 	  	$	2,482,509.91	 
	 1/1/2025 -12/31/2025
	  	$	56.12	 	  	$	213,064.26	 	  	$	2,556,771.08	 
	 1/1/2026 -12/31/2026
	  	$	57.80	 	  	$	219,442.52	 	  	$	2,633,310.20	 
	 1/1/2027 -12/31/2027
	  	$	59.53	 	  	$	226,010.61	 	  	$	2,712,127.27	 
	 1/1/2028 -Termination Date
	  	$	61.32	 	  	$	232,806.49	 	  	$	2,793,677.88	 

  

					
	      Extension Term:	  	Fair Market Rent (as defined in Section 3.03(b).
		
	Initial Tenant Work:	  	As set forth in Exhibit C attached hereto.
		
	Base Building Work:	  	As set forth in Exhibit C attached hereto.
			
	Exhibits:	  	Schedule 1:	  	Index of Defined Terms
		  	Exhibit A (Art 1):	  	The Property
		  	Exhibit B (Art. 1):	  	Building Floor Plan showing the Premises
		  	Exhibit C (Sec. 3.01):	  	Work Letter
		  	Exhibit C-1 (Sec. 2.01(e)):	  	List of Base ‘Building Plans and Specifications
		  	Exhibit C-2:	  	Tenant’s Initial Test Fit Plan
		  	Exhibit C-3:	  	Lab Shell Specifications Tenant Landlord Matrix of Responsibility
		  	Exhibit C-4:	  	Preliminary Construction Schedule
		  	Exhibit D:	  	Intentionally deleted
		  	Exhibit E (Sec. 6.02):	  	Cleaning Specification for Common Areas and Landlord Services
		  	Exhibit F (Sec. 6.02):	  	Shuttle Service
		  	Exhibit G (Sec. 9.07):	  	Rules and Regulations
		  	Exhibit H (Sec. 10.05(b)):	  	Construction Documents Requirements
		  	Exhibit I (Sec. 10.05(c)):	  	Tenant Work Insurance Schedule
		  	Exhibit J (Sec. 15.01):	  	Form of SNDA
		  	Exhibit K (Sec. 15.04):	  	Form of Estoppel Certificate
		  	Exhibit L (Sec. 9.05):	  	Exterior Signage
		  	Exhibit M (Sec. 16.06):	  	Form of Notice of Lease

  
 3 

 ARTICLE 2: PREMISES, APPURTENANT RIGHTS AND RIGHT OF FIRST OFFER 

2.01. Lease of Premises; Appurtenant Rights. 

(a) General. Landlord hereby leases the Premises to Tenant, and Tenant hereby leases the Premises from Landlord, for the Term. Subject
to Landlord’s Rules and Regulations and the provisions of this Lease, Tenant shall have access to the Premises, the parking areas serving the Premises, and the common areas of the Building and the Property necessary for Tenant’s use of, or
access to and egress from, the Premises 24 hours a day, 7 days a week; provided, however, that in times of emergency as determined by Landlord, Landlord shall have the right to limit access to the Building by Tenant and all other tenants,
provided that any such limits on access shall cease as soon as the emergency is resolved and Landlord shall use commercially reasonable efforts to limit interference with Tenant’s business in connection with any exercise of its rights
hereunder. For purposes of this Lease, an “emergency” shall mean an event, such as a natural disaster, fire or act of terrorism, not within the reasonable control of either party hereto, that poses an immediate threat to life or the
Property. 
 (b) Exclusions. The Premises exclude the perimeter walls thereof (other than the inner surfaces thereof), as well as all
common areas and facilities of the Property, including the common stairways and stairwells, entranceways and the main lobby, elevators and elevator wells, fan rooms, roofs, off-floor electric and off-floor telephone closets, freight elevators, and pipes, ducts, conduits, wires and appurtenant fixtures serving other parts of the Property (exclusively or in common) and other common areas and facilities from
time to time designated as such by Landlord. If the Premises includes less than the entire rentable area of any floor, then the Premises also exclude the common corridors, elevator lobby, and toilets (with the exception of those restrooms located
entirely within the Premises and for the exclusive use of Tenant) located on such floor, as well as common on-floor electric, telephone and janitor closets located on such floor. 

(c) Appurtenant Rights. Tenant shall have, as appurtenant to the Premises, the right to use in common with others, and subject to
Landlord’s Rules and Regulations: (a) the common areas and facilities of the Building, including the common loading docks, lobbies, hallways, stairways and elevators of the Building serving the Premises in common with other portions of the
Building, the bike repair and storage room on the first floor of the Building, showers and lockers located on the first floor of the Building and other Building amenities, (b) common sidewalks, walkways and roadways necessary for access to the
Building, (c) if the Premises include less than the entire rentable area of any floor, the common toilets and other common facilities of such floor; and no other appurtenant rights or easements, (d) wireless internet access provided in the
common areas of the Building, and (e) the risers, conduits and roof areas of the Building for Tenant’s business, telecommunications and computer needs, which roof areas are subject to Section 9.12. All costs,
charges and expenses associated with the commencement of the provision by a particular utility service provider or telecommunications service provider of service to Tenant or to the Premises at the request of Tenant (e.g., installation charges,
service deposits) shall be the sole responsibility of Tenant. 
 (d) Reservations. In addition to other rights reserved herein or by
law, Landlord reserves the right from time to time, without incurring any liability to Tenant or otherwise affecting Tenant’s obligations under this Lease, provided that Landlord shall provide at least forty-eight (48) hours prior notice
to Tenant (except in the case of an emergency, in which case notice shall be provided as soon as reasonably practicable) and shall use commercially reasonable efforts to avoid (except in emergency) interruption of Tenant’s use and access to the
Premises: (i) to make additions, alterations, improvements, repairs or replacements to the Building, including all common areas and facilities located therein; (ii) to install, use, maintain, repair, replace and relocate for service to the
Premises and other parts of the Building, or either, chases, shafts, pipes, ducts, conduits, wires and appurtenant fixtures wherever located in the Premises, the Building or elsewhere in the Property; (iii) to alter, eliminate or relocate any
common area or facility, including the lobbies and entrances; and (iv) to grant easements and other rights with respect to the Property; provided that (a) to the maximum extent practicable, no such installations, replacements or
relocations in the Premises shall be placed below ceiling surfaces, above floor surfaces or to the inside of perimeter walls, (b) Tenant’s use of and access to the Premises, the common areas and its parking spaces shall not be adversely
impacted by any such additions, alterations, improvements, repairs, installations, replacements or relocations, and Tenant shall continue to have rights to use a bike repair and storage room, showers, lockers, and wireless internet access in the
Building and to the risers, conduits and roof areas of the Building for Tenant’s business, telecommunications and computer needs, subject to the applicable provisions of this Lease, and (c) all such work necessitating entry into the
Premises shall be subject to the provisions of Section 9.06. 

  
 4 

 This Lease, and Tenant’s leasehold interest in the Premises, are subject to all rights,
agreements, easements, restrictions and matters of record and all agreements applicable to the Property which have been executed as of the Date of Lease and which have been, prior to the Date of Lease, either provided to Tenant or recorded with the
Middlesex South Registry of Deeds; and all permits and approvals for the construction and/or use of the Building. 
 (e) Measurement.
The total rentable area of the Premises set forth in Article 1 has been determined by (i) measuring the usable area of the same based on the proposed location of the demising walls of the Premises as shown on Exhibit B attached
hereto, using the BOMA International Standard Method of Measurement for Office Buildings (ANSI/BOMA Z65.1-2010) (the “Measurement Standard”) and (ii) applying an add-on factor of 18.3% thereto. Landlord shall have the right to re-measure the Premises and re-calculate the rentable area of the
Premises or any portion thereof in accordance with the foregoing methodology (and to re-calculate the Tenant’s Pro Rata Share, Base Rent, and any other amount set forth in the Lease or the Work Letter
which is dependent upon the rentable area of the Premises or any portion thereof) only at such time as (i) Tenant’s Space Plan is approved by Landlord pursuant to the Work Letter, or (ii) Landlord determines the final size of the H3
Room and the portion thereof dedicated to Tenant’s exclusive use, or (iii) Tenant leases ROFO Space pursuant to Tenant’s ROFO Right. Upon request of either party, the parties shall promptly execute an amendment to this Lease
confirming any such change in the rentable area of the Premises or any portion thereof and any corresponding change in Tenant’s Pro Rata Share, Base Rent, and any other amount set forth in the Lease or the Work Letter which is dependent upon
the rentable area of the Premises or any portion thereof. 
 (f) H3 Room; PH System; Control Areas; Bulk Tanks.  

(i) As part of the Base Building Work, Landlord shall construct on the first floor of the Building (including fireproofing), at the location
identified on Exhibit A attached hereto or in another location hereafter designated by Landlord in proximity to the loading dock and reasonably acceptable to Tenant, a common “Control Area” (as defined in the International Building
Code and International Fire Code) for use by lab tenants of the Building for the temporary storage of Hazardous Materials to be used in the tenants’ leased premises within the Building (the “H3 Room”). The H3 Room shall be
built to comply with H3 hazard use requirements. Landlord shall designate a portion of the H3 Room containing approximately 154 square feet of rentable area (“Tenant’s H3 Space”) for Tenant’s exclusive use (subject to
remeasurement as provided in Section 2.01(e) above), which space shall be demised from the remainder of the H3 Room and shall constitute part of the Premises for all purposes of this Lease. 

(ii) Tenant shall construct as part of the Initial Tenant Work pursuant to the Work Letter, an acid neutralization system within the portion of
the Premises situated on the first floor of the Building as shown on Exhibit B attached hereto or in another location within the Premises agreed upon by the parties. 

(iii) The parties have agreed that there will be two “Control Areas” within the Premises on the second floor of the Building, and one
“Control Area” (the H3 Room) on the first floor of the Building. Landlord shall pay all costs of installing the required fireproofing for such “Control Areas,” in addition to (and not as part of) providing the Landlord Allowance.

 (iv) In addition, Landlord shall make available to Tenant, in a mutually agreeable location near the loading dock within which Landlord
can fit this facility (see the proposed location shown on Exhibit A, Detail Page 2 as “Common Inert Gas Tank Enclosure (approx. location)”), exterior space for the installation of tanks to accommodate the storage of bulk nitrogen and
carbon dioxide, which storage space may be included within a common storage space also used by other tenants of the Building for similar tank storage. 

(g) Parking. 
 (i) During
the Term, Tenant shall have the appurtenant right to use, at no additional charge, the total number of parking spaces (such amount, the “Parking Allotment”) set forth in Article 1 in the garage (the “Parking
Garage”) and/or surface parking areas (collectively, with the Parking Garage, the “Parking Facilities”) serving the Building, in common with all persons now or hereafter entitled to use the same. These parking spaces shall
be used only by Tenant and Tenant’s employees and business invitees for the parking of passenger vehicles only. At no time may Tenant use more parking spaces in the Parking Facilities than the Parking Allotment. 

  
 5 

 (ii) Subject to the provisions of clause (iii) below, use of the parking spaces in the
Parking Facilities shall be on a non-exclusive, non-reserved basis. The provisions of this Lease, including Landlord’s Rules and Regulations, shall apply to the
Parking Facilities and Tenant’s use thereof. Landlord shall have the right to alter the Parking Garage or any other portion of the Parking Facilities, or the operation thereof, from time to time, and to temporarily close portions thereof for
maintenance, repair or improvement, as necessary; provided, however, that (i) Landlord shall provide at least two weeks’ prior notice (except in the case of an emergency, in which event notice shall be provided as soon as reasonably
practicable) to Tenant of any such closure, and (ii) Landlord shall use reasonable efforts to minimize interference with Tenant’s use and access to the Premises during any such closure, (iii) if such closure reduces the number of
usable parking spaces in the Parking Facilities by twenty percent (20%) or more, Landlord shall provide alternative parking for Tenant in the amount of at least the portion of the Parking Allotment not available to Tenant at the Parking Facilities
during any such closure and, if such parking is not within a reasonable walking distance from the Premises, shall provide regular shuttle service between the Building and the alternative parking area, during the hours of 6:00 am to 10:00 am and 4:00
pm to 7:00 pm Monday through Friday, and (iv) to the extent that the closure lasts for a period of ten (10) consecutive Business Days or more, Tenant shall have the right to consent to any such closure. 

(iii) Tenant’s employees and visitors shall have the right to use, as part of the Parking Allotment, up to ten (10) designated
parking spaces situated in the Garage initially at the location identified on Exhibit A attached hereto. Landlord shall have the right to relocate such spaces from time to time provided that such relocated spaces are in reasonably comparable
proximity to the Building entrance and exit nearest to the Premises. Landlord, at Landlord’s sole expense, shall install signage identifying the designated spaces as devoted to Tenant’s exclusive use. Promptly following receipt of notice
from Tenant that an unauthorized vehicle is parked in one of the parking spaces designated for Tenant’s exclusive use, Landlord shall arrange for the removal of such vehicle. 

(iv) None of Tenant’s rights under this Section may be assigned, subleased or otherwise transferred except in connection with a Transfer
or Related Party Transfer effected in accordance with the provisions of Article 12 below. Neither Landlord nor any operator of the Parking Facilities shall be responsible for any loss or damage due to fire or theft or otherwise to any
automobile parked in the Parking Facilities or to any personal property therein. 
 (v) Tenant acknowledges receipt of copies of
(i) that certain License Agreement dated as of April 7, 2017 by and between Landlord and the Armenian Cultural and Educational Center, Inc. pursuant to which the owner’ of the property at 47 Nichols Avenue, Watertown, Massachusetts
has the right to use a portion of the parking spaces in the Parking Facilities on Monday through Friday between the hours of 6:00 p.m. and midnight, on Saturday between the hours of 8:00 a.m. and 2:00 a.m. (Sunday morning), and on Sunday between the
hours of 8:00 am and midnight, to which this Lease is subject, and (ii) that certain License Agreement dated May 2016 by and between Landlord and the Commonwealth of Massachusetts, acting by and through the Department of Conservation and
Recreation, concerning the land owned by the Commonwealth adjacent to the Property (collectively, the “Agreements”).  

2.02. Right of First Offer. 

(a) If at any time during the Term of this Lease, any space on the second floor of the West Wing of the Building (the “ROFO
Space”) becomes available for occupancy upon the expiration or earlier termination of the lease therefor between Landlord and a third party tenant (and provided that both (i) Tenant is not then in default hereunder beyond all
applicable notice and grace periods (if any), and (ii) the Tenant named in Article 1 above is then occupying at least ninety percent (90%) of the Premises for the conduct of the Permitted Uses), Tenant shall have the right of first offer
to lease any such ROFO Space subject to and in accordance with the terms and conditions set forth in this Section 2.02 (“Tenant’s ROFO Right”). If at any time any ROFO Space shall become available for
occupancy, Landlord shall notify Tenant thereof in writing (“Landlord’s ROFO Space Notice”), which notice shall include (i) the anticipated estimated date upon which such ROFO Space shall become available for occupancy by
Tenant (the “ROFO Commencement Date”), (ii) a floor plan showing the approximate rentable square footage thereof, and (iii) Landlord’s determination of the Fair Market Rent for such ROFO Space for a period coterminous with
the Term of this Lease. Tenant shall have the right only to lease all such ROFO Space described in Landlord’s ROFO Space Notice (and not less than all of such ROFO Space) by giving written notice to Landlord (“Tenant’s ROFO
Acceptance Notice”) within fifteen (15) days after Tenant receives Landlord’s ROFO Space Notice, time being of the essence. If Tenant so elects to lease the subject ROFO Space, such ROFO Space shall be leased by Landlord to Tenant
upon the same terms and conditions contained in this Lease, except that: (A) Base Rent for the subject ROFO Space shall be equal to the Fair Market Rent therefor determined in accordance with Section 3.03(c) below
(made applicable hereto by such changes and modifications as are required given the application hereof), (B) the subject ROFO Space shall be and become part of the Premises hereunder upon the delivery of such ROFO Space to Tenant, and (C) it is
understood and agreed that, unless otherwise expressly provided in Landlord’s ROFO Notice, the subject ROFO Space shall be leased by Tenant in its then “as-is”,
“where-is” condition, without warranty or representation by Landlord and Landlord shall have no obligation to complete any work to prepare the applicable ROFO Space for Tenant’s use and
occupancy or provide any allowance or contribution therefor. Following such election by Tenant, and effective as of the delivery of the applicable ROFO Space and for the balance of the Term of this Lease and any

  
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extension thereof: (x) the “Premises”, as used in this Lease, shall include the applicable ROFO Space; (y) any Additional Rent, charges and expenses due under this Lease and
the number of parking spaces to which Tenant shall be entitled in the Parking Facilities shall be re-calculated to reflect the inclusion of the ROFO Space; and (z) the Base Rent shall equal the sum of the
then current Base Rent provided for in this Lease plus the Base Rent for the applicable ROFO Space as determined herein. The foregoing provisions of this Section 2.02(a) shall be self-executing, but the parties 

  
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 agree that for purposes of confirming the foregoing, Landlord shall prepare, and Tenant and Landlord shall
promptly execute and deliver, an amendment to this Lease in form reasonably acceptable to both parties reflecting the foregoing terms and the incorporation of any ROFO Space. For the purposes hereof, space shall be deemed “available for
occupancy” when (1) any lease or occupancy agreement (including extension periods thereunder) for such ROFO Space has expired or is due to expire within not less than six (6) months, (2) any expansion options, expansion rights or
other rights to lease with respect to such ROFO Space which are set forth in any other lease or leases entered into prior to the date hereof have expired or been waived, and (3) Landlord is free to, and intends to, lease such space to third
parties without restriction. 
 (b) If Tenant fails to timely exercise any of its rights hereunder, the right(s) granted hereunder as to the
applicable ROFO Space shall be deemed waived for the period set forth in this subsection (b) with respect to such ROFO Space, and Landlord may lease the applicable ROFO Space during such time to any party and upon terms substantially similar to
the terms offered to Tenant in Landlord’s ROFO Space Notice (including that the effective rental rate under such lease is at least ninety percent (90%) of the effective Rent offered to Tenant), free of any rights of Tenant. Tenant, following
such waiver and within seven (7) Business Days of Landlord’s request therefor, shall execute and deliver to Landlord a certification, in recordable form, confirming the waiver of such right (or if Tenant in good faith disputes that it has
so waived such right, Tenant shall so notify Landlord in writing within such 7-Business Day period). Provided that Landlord’s request specifies, in capitalized, boldfaced type in the first paragraph
thereof, that Tenant’s failure to so execute and deliver such certification (or to send notice of such dispute) shall (without limiting Landlord’s remedies on account thereof) entitle Landlord to execute and deliver to any third party, and
record, an affidavit confirming such waiver, then such failure to respond by Tenant shall entitle Landlord to do so, in which event such affidavit shall be binding on Tenant and may be conclusively relied on by third parties. Notwithstanding the
foregoing, if Landlord fails to execute a lease of such ROFO Space within twelve (12) months following the expiration of the 15-day period referenced in Section 2.02(a) above, or
if Landlord intends on accepting an offer to lease the ROFO Space at an effective rental rate that is less than ninety (90%) percent of the effective Rent offered to Tenant, then Landlord shall be required to again offer to lease the ROFO Space to
Tenant in accordance with the terms hereof prior to leasing the same to a third party. 
 (c) The foregoing Tenant’s ROFO Right may only
be exercised by the Tenant named in Article 1 above or a Related Party Transferee (in which latter case all references in this Section 2.02 to “Tenant” shall be deemed to refer to such Related Party Transferee). Tenant
acknowledges and agrees that its rights under this Section are and shall be subject and subordinate to any extension rights granted in (i) the initial lease by Landlord to a third party of each portion of the ROFO Space, and (ii) any lease
thereafter entered into by Landlord with a third party with respect to any portion of the ROFO Space in accordance with the provisions of this Section 2.02. 

ARTICLE 3: LEASE TERM 
 3.01. Lease
Term; Construction. The Initial Term of this Lease is set forth in Article 1. The Base Building and the Premises shall be constructed as provided in the Work Letter (the “Work Letter”) attached hereto as Exhibit C.

 3.02. Hold Over. If Tenant (or anyone claiming by, through or under Tenant) shall remain in occupancy of the Premises or any part
thereof after the expiration or early termination of the Term without a written agreement therefor executed and delivered by Landlord, then without limiting Landlord’s other rights and remedies the person remaining in possession shall be deemed
a tenant at sufferance, and Tenant shall thereafter pay a monthly use and occupancy charge (pro-rated for such portion of any partial month as Tenant (or anyone claiming by, through or under Tenant) shall
remain in possession) at a rate equal to the greater of (a) the Fair Market Rent for the Premises (which, notwithstanding anything to the contrary contained in this Lease, shall be deemed the rent then being quoted by Landlord for the Premises
(or any portion thereof) or comparable space in the Building, if the Premises (or any portion thereof) or any such space is then being marketed by Landlord), or (b) one hundred and fifty percent (150%) of the monthly amount payable as Base Rent
for the 12-month period immediately preceding such expiration or termination, and in either case with all Additional Rent also payable as provided in this Lease. No acceptance by Landlord of any payment by
Tenant pursuant to this Section shall constitute Tenant (or anyone claiming by, through or under Tenant) as a tenant at will, but Tenant or such other person or entity shall remain a tenant at sufferance subject to all of the provisions of this
Lease. If Landlord desires to regain possession of the Premises at any time Tenant (or anyone claiming by, through or under Tenant) is holding over, Landlord may, at its option, forthwith re-enter and take
possession of the Premises or any part thereof by any lawful, means. In any case, and notwithstanding the provisions of Section 16.10(b) to the contrary, Tenant shall be liable to Landlord for all claims, liabilities,
damages, losses or costs (including reasonable attorneys’ fees and costs) resulting from any failure by Tenant (or anyone claiming by, through or under Tenant) to vacate the Premises or any portion thereof when required hereunder, and shall
hold Landlord, its agents and employees, harmless and defend and indemnify Landlord, its agents and employees, from and against any and all claims, liabilities, damages, losses or costs (including reasonable attorneys’ fees and costs) which
Landlord may pay, incur or suffer on account of any such hold-over in the Premises after the expiration or earlier termination of the Term. 

  
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 3.03 Right to Extend. 

(a) Extension Term. Provided that, as of both the time Tenant gives the Extension Notice (as defined below) and the first day of the
Extension Term, (i) Tenant is not in default hereunder beyond all applicable notice and grace periods (if any), and (ii) the Tenant named in Article 1 above (or a Related Party Transferee) is then occupying at least seventy-five
percent (75%) of the Premises for the conduct of the Permitted Uses, then Tenant may extend the Term of this Lease for the Extension Term stated in Article 1 by giving unconditional written notice (an “Extension Notice”) to
Landlord at least twelve (12) months but not more than eighteen (18) months before the end of the Initial Term, time being of the essence. The Extension Notice shall be sufficient to extend the Term for the Extension Term, subject to all
of the terms of this Lease except for the change in Base Rent as set forth below, and no additional writing or further action by the parties shall be required for such purpose (but upon the request of either party, the parties shall promptly execute
and deliver an amendment to this Lease reflecting such extension of the Term). If Tenant fails to give the Extension Notice in strict accordance with the provisions of this Section 3.03(a), Tenant shall be deemed to have
waived all rights to extend the Term of this Lease. All references in this Lease to the “Term” shall mean the Initial Term as it may be extended by the Extension Term. 

(b) Extension Term Base Rent. Base Rent for the Extension Term(s) shall be the Fair Market Rent of the Premises (as defined below). Fair
market rent of the Premises (the “Fair Market Rent”) for the Extension Term shall be based upon leases or agreements to lease then being negotiated or executed with respect to comparable first-class office/laboratory space in the
Building or in comparable buildings in Watertown and other comparable inner suburban and suburban lab markets (excluding Kendall Square but including the Alewife section of Cambridge) with walkable urban amenities. In determining Fair Market Rent,
all relevant factors shall be taken into account, including size, location and condition of premises, lease term (including renewal options), tenant’s obligations with respect to operating expenses and taxes, tenant improvement allowances,
other inducements then being offered by landlords, condition of building, and services and amenities provided by the landlord. Fair Market Rent shall include provisions for increases or other adjustments during the Extension Term for which such
determination is being made. 
 (c) Determination of Fair Market Rent. Fair Market Rent shall be determined as follows: Landlord shall
give Tenant written notice (“Landlord’s Fair Market Rent Notice”) of Landlord’s determination of Fair Market Rent for the Extension Term within thirty (30) days of Tenant’s giving to Landlord the Tenant’s
Extension Notice. Tenant shall thereafter notify Landlord within thirty (30) days of Landlord’s giving to Tenant Landlord’s Fair Market Rent Notice of its agreement with or objection to Landlord’s determination of the Fair Market
Rent, whereupon in the case of Tenant’s objection, Fair Market Rent shall be determined by arbitration conducted in the manner set forth below. If Tenant does not notify Landlord within such 30-day period
of Tenant’s agreement with or objection to Landlord’s determination of the Fair Market Rent, then the Fair Market Rent for the Extension Term shall be deemed to be Landlord’s determination of the Fair Market Rent as set forth in
Landlord’s Fair Market Rent Notice to Tenant. If Tenant does notify Landlord within such 30-day period of Tenant’s objection to Landlord’s determination of the Fair Market Rent, then within ten
(10) days of Tenant’s giving such notice of objection to Landlord, each of Tenant and Landlord shall choose an MAI real estate appraiser or commercial real estate broker with at least ten (10) years of professional experience dealing
with properties similar to the Property in the vicinity of the Property (each a “Real Estate Professional”) and notify the other party of the person so selected. The Real Estate Professionals so selected shall each determine and
promptly report (in no event later than the thirtieth (30th) day following the giving of the notice of appointment of the second Real Estate Professional) to both Landlord and Tenant in writing
his or her determination of the Fair Market Rent. If the higher of the Fair Market Rents reported by the two Real Estate Professionals is no more than ten (10%) percent more than the lower rate, then the Fair Market Rent will be an average of such
amounts. However, if the higher amount is more than one hundred ten (110%) percent of the lower amount, then within ten (10) days after receipt of both reports, Landlord and Tenant will jointly appoint a third Real Estate Professional meeting
the aforesaid criteria, and the third Real Estate Professional will determine the Fair Market Rent by selecting either Landlord’s Fair Market Rent determination or Tenant’s Fair Market Rent determination according to whichever of the two
valuations as set forth in the reports from Landlord’s Real Estate Professional or Tenant’s Real Estate Professional, respectively, is closer to the actual Fair Market Rent in the opinion of such third Real Estate Professional. The third
Real Estate Professional shall have no discretion other than to select one of the determinations of Fair Market Rent made by the first two Real Estate Professionals as aforesaid. Landlord and Tenant shall each pay the Real Estate Professional that
it appoints, and shall share equally the cost of the third Real Estate Professional. 

  
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 (d) Rent Continuation. For any part of the Term for which the amount of Base Rent has
not finally been determined, Tenant shall make payment on account of Base Rent at the rate last paid under this Lease, and the parties shall adjust for any overpayments or underpayments upon the final determination of Fair Market Rent. The failure
by the parties to complete the processes contemplated under this Section 3.03 prior to the commencement of the Extension Term shall not affect the continuation of the Term or the parties’ obligation to make any
adjustments for any overpayments or underpayments for the Base Rent due for the applicable period promptly after the determination thereof is made. 

ARTICLE 4: RENT 
 4.01. Base Rent.
Commencing as of the Rent Commencement Date and continuing thereafter on the first day of each month during the Term, Tenant shall pay Landlord the monthly installment of Base Rent and the monthly installment of Tenant’s Pro Rata Share of
Operating Costs required by Section 4.02, in advance, without notice or demand. 
 4.02. Additional Rent

  

	 	(a)	 General. “Rent” means, collectively, Base Rent and all other amounts payable by Tenant
under this Lease other than Base Rent, including Tenant’s Pro Rata Share of Taxes (Article 5) and Operating Expenses (Article 7) , regardless of whether or not such amount is expressly described as “Additional Rent” in
this Lease (collectively, “Additional Rent”). Landlord shall reasonably estimate in advance (i) all Taxes under Article 5 and (ii) all Operating Expenses under Article 7 (the items in clauses (i) and
(ii), collectively, being “Operating Costs”) and Tenant shall pay one-twelfth (1/l2th) of Tenant’s Pro Rata Share of such reasonably
estimated Operating Costs monthly in advance together with Base Rent. Landlord may reasonably adjust its estimates of Operating Costs at any time based upon its experience and reasonable anticipation of costs. Such adjustments shall be effective as
of the next Rent payment date occurring at least fifteen (15) days after notice to Tenant. Within one hundred eighty (180) days after the end of each calendar year (or portion thereof) included within the Term, Landlord shall give Tenant a
reasonably detailed statement (an “Annual Operating Statement”) of the Operating Costs paid or incurred by Landlord during the preceding calendar year (pro-rated for partial calendar years
included within the Term) and Tenant’s Pro Rata Share of such expenses; provided, however, that Landlord may bill Tenant for any items omitted or underbilled with respect to the calendar year in question for a period of time not to
exceed one (1) year from the last day of such calendar year. Within thirty (30) days after Landlord’s delivery of an Annual Operating Statement to Tenant, Tenant shall pay Landlord any underpayment, or Landlord shall credit Tenant
with any overpayment (which credit shall be applied to any Rent due under this Lease next coming due after the delivery of the Annual Operating Statement (or if the Term has ended, Landlord shall pay Tenant the amount of any overpayment as provided
below)), of Tenant’s Pro Rata Share of such Operating Costs. 

 If Tenant wishes to dispute the determination of the
Operating Costs charged to Tenant under this Lease, Tenant may do so provided (i) Tenant shall give Landlord written notice of such dispute within one hundred twenty (120) days after its receipt of the Annual Operating Statement being
disputed and (ii) Tenant shall pay any overpayment due based on the Annual Operating Statement as provided in the foregoing paragraph, pending resolution of the dispute. If Landlord provides a revised Annual Operating Statement within the one-year period described in the preceding grammatical paragraph in response to a previously omitted or underbilled item of Operating Costs, Tenant shall have the same 120-day
period from its receipt of such revised Annual Operating Statement within which to give Landlord written notice that it disputes one or more of the revised items contained in such revised Annual Operating Statement (which shall be the only items
then subject to dispute by Tenant). Promptly after the giving of such notice in either such case, Landlord shall allow Tenant’s representatives to examine and audit in Landlord’s offices (or the office of its managing agent)
Landlord’s books and records with respect to the subject matter of the dispute, which review or audit shall be completed within ninety (90) days after Tenant gave such notice of dispute. Tenant agrees that the party selected by Tenant to
perform such review or audit shall be compensated on the basis of hourly fees and not on a contingency or percentage basis. Tenant agrees to keep the results of any such review or audit conducted by Tenant confidential except for disclosures to its
employees, attorneys, consultants, accountants and owners and except to the extent required to enforce Tenant’s rights hereunder. The cost of such audit shall be borne by Tenant; provided, however, in the event it is finally determined (by
mutual agreement or other resolution of such dispute) that Tenant was overcharged by more than five percent (5%) for the immediately preceding calendar year, then, in such event, Landlord shall pay for Tenant’s reasonable

  
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out-of-pocket cost for the audit. If it is finally determined (by mutual agreement or other resolution of such
dispute) that Landlord’s determination of any of the Operating Cost is (i) overstated, or (ii) understated, then in the case of (i) Landlord shall credit the difference against monthly installments of Rent next thereafter coming
due (or refund the difference if the Term has ended and Tenant has no further obligation to Landlord), or in the case of (ii) Tenant shall pay to Landlord the amount of such excess. Landlord’s obligation under this Paragraph shall survive
the expiration of the Term or earlier termination of this Lease. 
 If the Term expires or the Lease is terminated as of a date other than
the last day of a calendar year, Tenant’s payment of Additional Rent pursuant to this Section for such partial calendar year shall be based on Landlord’s good faith estimate of the items otherwise includable in Operating Costs and Landlord
shall provide such estimate to Tenant no later than thirty (30) days after the expiration or termination of the Term. Tenant’s payment of Additional Rent shall be made on or before ten (10) Business Days after Landlord delivers such
estimate to Tenant, with an appropriate payment or refund to be made upon Tenant’s later receipt of Landlord’s Annual Operating Statement for such calendar year. This Section shall survive the expiration or earlier termination of the Term.

 This Lease requires Tenant to pay directly to suppliers, vendors, carriers, contractors, and other parties certain utility costs,
personal property taxes, maintenance and repair costs and other expenses. If Tenant fails to make any such payments when due and Landlord thereafter receives notice of such failure on the part of Tenant, Landlord shall have the right (but no
obligation) to do so on its behalf, and if Landlord so pays any of these amounts in accordance with this Lease, Tenant shall reimburse such costs in full, together with interest thereon at the Default Rate, to Landlord, as Additional Rent, within
ten (10) Business Days of demand. 
 (b) Allocation of Certain Operating Costs. If at any time during the Term, Landlord provides
services (“Limited Landlord Services”) only with respect to particular portions of the Building or Property, or incurs any other Operating Costs allocable to particular portions of the Building or Property, then: (i) such
Operating Costs shall be charged entirely to those tenants, including Tenant, if applicable, of such portions, and the amounts so charged to such particular tenant or tenants shall be excluded from Operating Costs otherwise charged under
Section 4.06(A), and (ii) Tenant’s Pro Rata Share for any such Limited Landlord Services shall be as defined in Section 4.06(B). If, during any period for which Landlord’s Operating
Costs are being computed, less than ninety-five (95%) percent of the rentable area of the Building was leased and occupied by tenants: (x) Operating Costs that are allocable to the entire Building or the portion thereof in question and which
vary by level of occupancy shall be reasonably estimated and extrapolated by Landlord to determine the Operating Costs that would have been incurred if the Building or such portion in question were ninety-five (95%) leased and occupied by tenants
for such year and such services were being supplied to all tenants, and such estimated and extrapolated amount shall be deemed to be the Operating Costs for such period, and (y) Tenant’s Pro Rata Share with respect to such Operating Costs
shall be as defined in Section 4.06(A) or (B) as applicable; provided, however, that Landlord shall not collect from Tenant and other tenants in the Building in the aggregate more than one hundred percent of
Taxes and such Operating Costs actually incurred by Landlord. 
 4.03. Late Charge. Tenant acknowledges that if it pays Rent late,
Landlord will incur unanticipated costs which will be extremely difficult to ascertain exactly. Such costs include processing and accounting charges, and late charges that may be imposed on Landlord under a mortgage on the Property. Accordingly, if
Landlord does not receive any such payment within five (5) days following its due date, Tenant shall pay Landlord a late charge equal to five (5%) percent of the overdue amount as an administrative charge. The parties agree that this late
charge represents a fair and reasonable estimate of the costs Landlord shall incur by reason of Tenant’s payment default. Payment of the late charge shall not cure Tenant’s payment default or prevent Landlord from exercising any other
rights and remedies. 
 4.04. Interest. Any late Rent payment shall bear interest from the date due (without regard to the 5-day grace period provided in Section 4.03) until paid at a rate equal to the Prime Rate plus 4% per annum (the “Default Rate”), except to the extent such interest would
cause the total interest to be in excess of that legally permitted (and then interest will be at the maximum rate legally permitted). The “Prime Rate” shall mean the prime lending rate per annum published in The Wall Street
Journal from time to time, and the Default Rate shall be adjusted effective upon each change in the Prime Rate. 
 Payment of interest
shall not cure Tenant’s payment default or prevent Landlord from exercising any other rights and remedies. 
 4.05. Method of
Payment. Tenant shall make a pro rata payment of Base Rent and Additional Rent for any period of less than a month at the beginning or end of the Term. All payments of Base Rent, Additional Rent and other sums due shall be paid in current U.S.
exchange by check drawn on a Boston clearinghouse bank to the Original Address of Landlord or such other place as Landlord may from time to time direct (or if requested by Landlord in the case of Base Rent, by electronic fund transfer) without
demand (except to the extent notice or demand is expressly required herein), abatement (except to the extent expressly provided herein), set-off or other deduction. 

 

  
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 Without limiting the foregoing, except as expressly otherwise set forth in this Lease,
Tenant’s obligation so to pay Rent shall be absolute, unconditional, and independent and shall not be discharged or otherwise affected by any law or regulation now or hereafter applicable to the Premises, or any other restriction on
Tenant’s use, or any casualty or taking or any failure by Landlord to perform or other occurrence. 
 It is intended that Base Rent
payable hereunder shall be a net return to Landlord throughout the Term, free of expense, charge, offset, diminution or other deduction whatsoever on account of the Premises (excepting Landlord’s financing expenses, federal and state income
taxes of general application, and those expenses that this Lease expressly makes the responsibility of Landlord and excepting any expense or charge incurred as a result of Landlord’s acts or omissions), and all provisions hereof shall be
construed in terms of such intent. 
 4.06. Tenant’s Pro Rata Share. The term “Tenant’s Pro Rata Share”
shall have different definitions depending upon the circumstances in which such term is used. 
  

	 	(A)	 Entire Building. With respect to any Operating Costs and benefits that are allocable to the entire
Building and with respect to Tenant’s Parking Allotment, Tenant’s Pro Rata Share shall be defined as a fraction, the numerator of which is the total rentable area of the Premises, and the denominator of which is the total rentable area of
the Building, as of the date of the computation. As of the date hereof, the parties agree that the total rentable area of the Building is 185,015 square feet, and that Tenant’s Pro Rata Share is 24.62% (subject to adjustment as provided in
Section 2.0l(e) above. 

  

	 	(B)	 Costs that are only incurred for portions of the Building. With respect to any Operating Costs
and benefits that are allocable to only a portion of the Building which includes the Premises, Tenant’s Pro Rata Share shall be defined as a fraction, the numerator of which is the total rentable area of the Premises, and the denominator of
which is equal to the sum of the rentable square foot area of (i) the Premises and (ii) all other premises to which such cost is allocable. 

Tenant’s Pro Rata Share with respect to the entire Building is initially as set forth in Article 1 and Tenant’s Pro Rata
Share is subject to adjustment only if the total rentable area of the Premises changes on account of any amendment to the Lease as may be set forth in such amendment, or if the Building changes on account of any reconstruction after a casualty
event, expansion or contraction thereof. 
 ARTICLE 5: TAXES 

5.01. Taxes. Commencing as of the Rent Commencement Date and continuing thereafter throughout the Term of the Lease, Tenant covenants
and agrees to pay to Landlord as Additional Rent, Tenant’s Pro Rata Share of Taxes for each fiscal tax period, or ratable portion thereof, included in the Term. If Landlord receives a refund of any such Taxes, Landlord shall pay to Tenant
Tenant’s Pro Rata Share of the refund after deducting Landlord’s reasonable costs and expenses incurred in obtaining the refund, to the extent such costs and expenses were not previously included in, and actually paid as, Taxes pursuant to
Section 5.02 below. Tenant shall make estimated payments on account of Taxes in monthly installments on the first day of each month, in amounts estimated from time to time by Landlord pursuant to
Section 4.02(a). As of the Date of Lease, Landlord’s estimate of Taxes for the first Lease Year is $4.75 per rentable square foot of the Premises, but such amount is only an estimate and shall not govern over the
actual amount of Taxes for the first Lease Year as determined in accordance with the provisions of this Article. 
 5.02. Definition of
“Taxes”. “Taxes” shall mean all taxes, assessments, betterments, excises, user fees imposed by governmental authorities, and all other governmental charges and fees of any kind or nature, or impositions or agreed payments in
lieu thereof, or voluntary payments made in connection with the provision of governmental services or improvements of benefit to the Building or the Property (including any so-called linkage, impact or
voluntary betterment payments), assessed or imposed against the Premises, the Building or the Property (including any personal property taxes levied on such property or on 

  
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fixtures or equipment used in connection therewith). Furthermore, notwithstanding anything to the contrary herein, Taxes shall exclude (a) any interest and/or penalties for late payments to
the extent relating to a period in which Tenant was not in default (beyond any applicable notice and cure periods) of its obligations to pay Base Rent, Tenant’s Pro Rata Share of Operating Costs or other payments under this Lease, and
(b) federal, state or local income or profit taxes, franchise, rental, capital, inheritance, estate, conveyance, transfer, gift, or corporate excise taxes or levies. The amount of any special taxes, special assessments, and agreed or
governmentally imposed “in lieu of tax” or similar charges, shall be included in Taxes for any year but shall be limited to the amount of the installment (plus any interest, other than penalty interest, payable thereon) of such special
tax, special assessment or such charge required to be paid during or with respect to the year in question. Landlord agrees that if any special taxes, special assessments, and agreed or governmentally imposed “in lieu of tax” or similar
charges shall be levied against the Building, to elect to pay such assessment over the longest period of time permitted by law or applicable agreement with the governmental authority. Betterments and assessments, whether or not paid in installments,
shall be included in Taxes in any tax year as if the betterment or assessment were paid in installments over the longest period permitted by law, together with the interest thereon charged by the assessing authority for the payment of such
betterment or assessment in· installments. 
 Notwithstanding the foregoing, if during the Term the present system of ad valorem
taxation of property shall be changed so that, in lieu of or in addition to the whole or any part of such ad valorem tax there shall be assessed, levied or imposed on the Premises, the Building or the Property, or on Landlord, any kind or nature of
federal, state, county, municipal or other governmental capital levy, income, sales, franchise, excise or similar tax, assessment, charge or fee (as distinct from the federal and state income tax in effect on the Date of Lease) measured by or based
in whole or in part upon Building valuation, mortgage valuation, rents, services or any other incidents, benefits or measures of real property or real property operations, then any and all of such taxes, assessments, levies, charges and fees shall
be included within the term “Taxes”, but only to the extent that the same would be payable if the Property were the only property of Landlord. Taxes shall also include expenses, including reasonable fees of attorneys, appraisers and other
consultants, incurred in connection with any efforts to obtain abatements or reduction of Taxes for any year wholly or partially included in the Term, whether or not successful and whether or not such efforts involved filing of actual abatement
applications or initiation of formal proceedings. 
 5.03. Personal Property Taxes. Tenant shall pay directly all taxes (if any)
charged against Tenant’s Property (as defined in Section 10.06). Tenant shall use commercially reasonable efforts to have Tenant’s Property taxed separately from the Property. Landlord shall notify Tenant if any
of Tenant’s Property is taxed with the Property, and Tenant shall pay such taxes to Landlord within fifteen (15) days of such notice. 

ARTICLE 6: BUILDING SERVICES AND SPECIAL BUILDING FACILITIES 

6.01. Utility Services. 

(a) Tenant shall make all arrangements for, and shall provide and pay all charges and deposits required by the provider for, water, sewer, gas,
boiler water, electricity, telephone and any other utilities or services used or consumed on the Premises (collectively, “Utility Services”), whether called use charge, tax assessment, fee, or otherwise, as the same become due. As
part of the Base Building Work, Landlord will (i) install Oncom BTU metered taps for reheat hot water from the main Building loop to the Premises (if additional taps from the main loop are required, Tenant shall install them at its own cost and
expense, and any meters installed as part of such work shall be compatible with the Building equipment and the Building BMS system); (ii) provide space for a Tenant meter on the utility gas manifold so that Tenant can install (at its sole cost and
expense) any gas service necessary to service the exclusive needs of Tenant’s Premises; and (iii) provide a connection to the Building potable water service to the Premises (Tenant shall provide and install a water meter at this connection
with a remote reader to record Tenant’s use of domestic water within the Premises). Tenant shall install, as part of its electrical service switchgear, a CT cabinet with an electrical usage meter as required by the Utility Service Provider. If
the Utility Service Provider will not allow individual direct metering for Tenant’s service, this meter shall be used to measure Tenant’s direct usage of electricity within the Premises, (including the electricity consumed in providing
HVAC service to the Premises), for which Tenant shall reimburse Landlord at the direct billing rates charged to Landlord by the Utility Service Provider. Landlord shall bill Tenant monthly for such electrical consumption and hot water consumption as
a recurring charge, and Tenant shall pay each such invoice, as Additional Rent, within thirty (30) days after receipt of an invoice therefor. 

(b) Tenant shall timely pay all costs and expenses associated with any directly and separately metered utilities (such as telephone) provided
exclusively to the Premises directly to the applicable service provider. Tenant shall pay all costs and expenses associated with utility charges that are based on sub-metering or check metering directly to
Landlord, without mark-up by Landlord on account of Landlord’s administration of such charges, within thirty (30) days of invoice therefor by Landlord. With respect to any Utility Services that are
not either separately metered or measured by a check meter or submeter, Tenant shall pay the cost of the same 

  
 13 

 
as part of Operating Costs payable hereunder. Tenant may, no more than once per calendar year, conduct an engineering survey at its sole cost and expense to determine whether the submeters and/or
check meters are accurately measuring the particular services to be measured thereby and, if Tenant discovers any metering inaccuracies as a result of such survey and such inaccuracies result in an error in the amount billed to Tenant, Landlord
shall promptly refund the overpayment within ten (10) Business Days after receipt of notice from Tenant of such inaccuracy. If requested by Landlord, Tenant and the persons conducting the engineering survey for Tenant shall enter into a
reasonable confidentiality agreement prior to inspecting such meters, which shall permit Tenant to disclose the results of such survey to the extent required to enforce its rights hereunder. If the survey shows any errors resulting in any
underpayment for such services, Tenant shall reimburse Landlord for Tenant’s share of such underpayment, as Additional Rent, within ten (10) Business Days of demand. In no event shall Tenant engage any person in connection with such
engineering survey whose fees or costs are payable, in whole or part or directly or indirectly, in a contingent manner or by means of any commission depending on the survey outcome. Any dispute regarding amounts due, or accuracy of the meters, under
this paragraph shall be resolved in accordance with Section 16.17 of this Lease at the request of Landlord or Tenant, which request shall be made with respect to disputes regarding amounts due, no later than one hundred
eighty (180) days after Tenant receives Landlord’s Annual Operating Statement for the fiscal year in question (any bill not disputed within such 180-day period shall be deemed final and conclusive).
Except as expressly set forth in Section 6.03, Landlord shall not be liable for any interruption or failure in the supply of any utilities or Utility Services. 

(c) To the maximum extent permitted by law, Landlord shall have the right at any time and from time to time during the Term to contract for or
purchase one or more Utility Services from any reputable company or third party providing Utility Services (“Utility Service Provider”) to the Building, provided that the rates charged by such Utility Service Provider are
competitive with the current market rates. In exercising its rights hereunder, Landlord shall make commercially reasonable efforts to avoid any interruption to Tenant’s business operations in connection with the change from one Utility Service
Provider to another. Subject to Section 9.06, Tenant agrees reasonably to cooperate with Landlord and such Utility Service Providers and at all times as reasonably necessary, and on reasonable advance notice of not less
than forty-eight (48) hours (except in the event of emergency), shall allow Landlord and the Utility Service Providers reasonable access to any utility lines, equipment, feeders, risers, ducts, shafts, fixtures, wiring and any other such
machinery or personal property within the Premises and associated with the delivery of Utility Services. 
 (d) Except for the Initial Tenant
Work and the equipment and appliances being installed in connection therewith, Tenant agrees that it will not make any material alteration or material addition to the electrical equipment and/or appliances in the Premises which would require
increased electrical service to the Premises or modifications to the structure of the Building, without the prior written consent of Landlord in each instance, which consent will not be unreasonably withheld, conditioned or delayed, and using
contractor(s) reasonably approved by Landlord, and will promptly advise Landlord of any other alteration or addition to such electrical equipment and/or appliances (as to which Landlord’s prior written consent shall not be required). Landlord
agrees to respond to any request for approval made by Tenant pursuant to this subsection (c) within ten (10) Business Days after its receipt of such request. 

6.02. Building Services and Building Systems. 

(a) In addition to the services described in Section 6.01, Landlord shall provide the following services to Building
common areas, the costs of which are included within Operating Expenses: 
  

	 	(i)	 Janitorial services for the Building common areas as described in Exhibit E attached hereto.

  

	 	(ii)	 Building security consistent with similar “first-class” laboratory and office buildings in the
vicinity of the Property as described in Exhibit E attached hereto. 

  

	 	(iii)	 Landlord shall arrange for and provide (as defined below) to the common areas of the Building those services as
set forth in Exhibit E attached hereto. 

  

	 	(iv)	 Landlord shall provide HVAC service to the common areas of the Building by means of the Building mechanical
system, during Normal Business Hours, at such temperatures and in such amounts as are reasonably deemed by Landlord to be in keeping with the first-class standards of the Building. 

Tenant acknowledges that Landlord has not made any warranty or representation to Tenant as to the efficacy of the security services that
Landlord is required to provide under this Lease. 

  
 14 

 (b) Landlord shall provide to the common areas of the Building the janitorial services as
described in Exhibit E attached hereto, the costs of which are included within Operating Expenses. Tenant shall, at its sole cost and expense, provide janitorial services to the Premises on each Business Day during the Term. In addition,
Tenant shall arrange for the removal and disposal of its lab-related refuse by a licensed vendor, all at Tenant’s sole cost and expense, such removal and disposal to be accomplished in accordance with all
applicable Legal Requirements. 
 (c) Tenant shall have the ability to control the provision of heat, ventilation or air conditioning to the
portions of the Premises served by the Building mechanical systems (as opposed to being provided by means of any HVAC equipment or system installed by or on behalf of Tenant and serving only the Premises). The electricity consumed in providing HVAC
service to the Premises through the Building mechanical system shall be measured by a submeter and charged back to Tenant by Landlord at Landlord’s actual cost, without mark-up. The hot water consumed in
providing HVAC service to the Premises through the Building mechanical system shall be metered to Tenant. Landlord shall bill Tenant monthly for such electrical consumption and hot water consumption as a recurring charge, and Tenant shall pay each
such invoice, as Additional Rent, within thirty (30) days after receipt of an invoice therefor. Tenant agrees to lower and close the blinds or drapes when necessary because of the sun’s position, whenever the air conditioning system is in
operation, and to cooperate fully with Landlord with regard to, and to abide by all the reasonable regulations and requirements which Landlord may prescribe for, the proper functioning and protection of the air conditioning system of general
applicability to all occupants of the Building and provided such regulations and requirements are provided in writing to Tenant thirty (30) days in advance. 

(d) If Tenant desires HVAC service to a common area of the Building outside of Normal Business Hours, Landlord will use reasonable efforts,
upon not less than twenty-four (24) hours’ prior written notice from Tenant of its requirements in that regard, to furnish additional heat or air conditioning services to such common area during such requested times. Tenant will pay to
Landlord Landlord’s actual hourly cost (including equipment depreciation), without markup, as the same may be adjusted from time to time by Landlord, for any such additional heat or air conditioning service required by Tenant. 

Excluding any equipment to be installed as part of the Initial Tenant Work, in the event Tenant requires additional air conditioning for
business machines, meeting rooms or other special purposes, or because of occupancy or excess electrical loads, any additional air conditioning units, chillers, condensers, compressors, ducts, piping and other equipment, such additional air
conditioning equipment will be installed, but only if, in Landlord’s reasonable judgment, the same will not cause damage or injury to the Building or create a dangerous or hazardous condition. At Landlord’s sole election, such equipment
will either be installed: 
  

	 	(i)	 by Landlord at Tenant’s expense and Tenant shall reimburse Landlord within thirty (30) days of demand
(to the extent that such equipment will serve portions of the Property other than the Premises, Tenant shall only be obligated to pay its proportionate share of such cost), as Additional Rent, in such an amount as will compensate it for the cost
incurred by it in operating, maintaining, repairing and replacing, if necessary, such additional air conditioning equipment. At Landlord’s election, such equipment shall be maintained, repaired and replaced by Tenant at Tenant’s sole cost
and expense, and throughout the term of this Lease, Tenant shall, at Tenant’s sole cost and expense, purchase and maintain a service contract for such equipment from a service provider reasonably approved by Landlord (to the extent that such
equipment will serve portions of the Property other than the Premises, Tenant shall only be obligated to pay its proportionate share of such costs). Tenant shall obtain Landlord’s prior written approval of both the form of service contract and
of the service provider, which approval shall not be unreasonably withheld, conditioned or delayed; or 

  

	 	(ii)	 only if the additional equipment will exclusively serve the Premises, by Tenant, subject to Landlord’s
prior reasonable approval of Tenant’s plans and specifications for such work. In such event: (i) such equipment shall be maintained, repaired and replaced by Tenant at Tenant’s sole cost and expense, and (ii) throughout the term
of this Lease, Tenant shall, at Tenant’s sole cost and expense, purchase and maintain a service contract for such equipment from a service provider approved by Landlord. Tenant shall obtain Landlord’s prior written approval of both the
form of service contract and of the service provider, which approval shall not be unreasonably withheld, conditioned or delayed. 

  
 15 

 (e) Pursuant to Section 10.03, Landlord shall repair, maintain in
good condition and order, and replace all Building Systems (including the HVAC, plumbing, electrical, mechanical and other systems) to the extent to which the same were installed as part of the Base Building Work, subject to casualty, condemnation
and matters described in Section 16.09, the cost of which shall be included in Operating Expenses to the extent provided in Section 7.01. Tenant shall be solely responsible, at its sole cost and expense, for
repairing, maintaining and replacing all equipment which services solely the Premises, whether the same were initially installed by Landlord or Tenant, and whether the same were installed prior to the Rent Commencement Date or thereafter, except to
the extent the need for such repair results from Landlord’s negligence or willful misconduct or the negligence or willful misconduct of its agents, employees, contractors, and/or invitees. In no event shall Landlord be liable for any
interruption or delay in providing any of the services described in this Section or in Exhibit E attached hereto by reason of any accident, the making of repairs, alterations or improvements, labor difficulties, trouble in obtaining fuel,
electricity, service or supplies from the sources from which they are usually obtained for such Building, governmental restraints, or any cause beyond Landlord’s control. 

(f) Notwithstanding anything to the contrary contained in this Article 6 or elsewhere in this Lease, Landlord may institute, and Tenant
shall comply with, such policies, programs and measures as may reasonably be necessary, required, or expedient for the conservation and/or preservation of energy or energy services, or as may be necessary or required to comply with applicable Legal
Requirements, provided the same do not materially interfere with Tenant’s use of the Premises or Tenant’s business or cause the Tenant to incur additional costs. 

(g) Tenant acknowledges that it has been provided with an opportunity to confirm that the electric current serving the Premises will be
adequate to supply its proposed permitted uses of the Premises. If, however, Tenant subsequently determines that it will require electric current for use in the Premises in excess of the quantity which, in Landlord’s reasonable judgment,
Landlord’s facilities are capable of providing, then Landlord, upon written request and at the sole cost and expense of Tenant, will furnish and install such additional wire, conduits, feeders, switchboards and appurtenances as reasonably may
be required to supply such additional requirements of Tenant if current therefor be available to Landlord, provided that the same shall be permitted by applicable Legal Requirements and Insurance Requirements, and shall not cause damage to the
Building or the Premises or cause or create a dangerous or hazardous condition or entail excessive or unreasonable alterations or repairs. 

(h) Tenant shall have the right to install, at its sole cost and expense, a security system for its Premises provided that (i) such
security system is compatible with any security system installed by Landlord with respect to the Building as a whole, and (ii) Tenant shall provide Landlord with access cards, keys or codes as required to gain entry into all parts of the
Premises, subject to the provisions of Section 9.06. On or prior to the date hereof, Landlord shall provide Tenant with schematics and plans with the location of cameras and all security access points in and around the
Premises. 
 (i) For the Term of this Lease, Landlord shall contract for the provision of scheduled shuttle private bus service or other
vehicular transportation for employees of Tenant and other tenants at the Property to and from the Property and the Harvard Square MBTA Red Line Station, as more particularly provided in Exhibit F attached hereto. 

(j) Landlord shall, at its sole cost and expense, construct a loading area and install a freight elevator, all as more particularly provided in
the Work Letter attached hereto as Exhibit C, at the location identified on Exhibit A attached hereto or as otherwise agreed upon by the parties. Tenant shall have the right to use such loading dock and freight elevator, in common with
other tenants of the Building, on a 24/7 basis at no additional charge. 
 6.03. Service Interruptions. When necessary by reason of
accident or emergency, or for repairs, alterations, replacements or improvements which in the reasonable judgment of Landlord are desirable or necessary to be made, or by reason of event(s) of Force Majeure, Landlord reserves the right to interrupt,
curtail, stop or suspend (i) the furnishing of heating, elevator, air conditioning, and cleaning services and (ii) the operation of the plumbing and electric systems. Landlord shall exercise reasonable diligence to eliminate the cause of
any such interruption, curtailment, stoppage or suspension, but there shall be no diminution or abatement of rent or other compensation due from Landlord to Tenant hereunder, nor shall this Lease be affected or any of the Tenant’s obligations
hereunder reduced, and the Landlord shall have no responsibility or liability for any such interruption, curtailment, stoppage, or suspension of services or systems, except as provided herein. Landlord shall schedule all non-emergency interruptions, curtailments, stops or suspensions of services or systems in advance after consultation with Tenant, and shall make commercially reasonable efforts to avoid the same interfering with
Tenant’s business. 

  
 16 

 Notwithstanding the foregoing, Tenant shall be entitled to a proportionate abatement of Base
Rent in the event of a Landlord Service Interruption (as defined below). For the purposes hereof, a “Landlord Service Interruption” shall occur in the event (i) the Premises shall lack any service which Landlord is required to provide
hereunder thereby rendering at least fifty (50%) percent of the usable area of the Premises untenantable for the entirety of the Landlord Service Interruption Cure Period (as defined below), (ii) such lack of service was not caused by the act or
omission of Tenant or any Tenant Party; (iii) Tenant in fact ceases to use at least fifty (50%) percent of the Premises for the entirety of the Landlord Service Interruption Cure Period; and (iii) such interruption of service was the
result of causes, events or circumstances within the Landlord’s reasonable control and the cure of such interruption is within Landlord’s reasonable control. During such Landlord Service Interruption Period, Landlord will, if reasonably
practical, cooperate with Tenant to arrange for the provision of any interrupted services on an interim basis via temporary measures until final corrective measures can be accomplished and Tenant will permit Landlord the necessary access to the
Premises to remedy such lack of service, subject to the provisions of Section 9.06. For the purposes hereof, the “Landlord Service Interruption Cure Period” shall be defined as seven (7) consecutive Business
Days after Landlord’s receipt of written notice from Tenant of the Landlord Service Interruption. This Section 6.03 shall be Tenant’s sole and exclusive remedy on account of an interruption of services or Landlord
default resulting in an interruption of services other than Tenant’s right to obtain affirmative injunctive relief. This Section 6.03 shall not apply to any interruption or failure of services required to be provided
by Landlord under Section 6.02(a) or Exhibit E attached hereto, which is caused in whole or in part by any act or omission of Tenant or any Tenant Party, or by any occurrence described in
Section 16.09, or by any cause whatsoever other than those set forth in the first sentence of this Section 6.03. Notwithstanding the foregoing, if either Landlord or Tenant disputes in good faith
whether, or the extent to which, an event is subject to the provisions of this Section 6.03, or the amount of Tenant’s abatement of Base Rent hereunder, such dispute shall be resolved in accordance with
Section 16.17 of this Lease; provided, however, that in the event that it is ultimately determined that there was a Landlord Service Interruption, then Tenant shall have the right to a retroactive equitable abatement of
Base Rent for the period as set forth above, provided that, if the Term expires before Tenant’s entire retroactive abatement has been effected, then Landlord shall immediately refund to Tenant any overpayment of Rent due under the Lease not yet
received on account of the retroactive abatement. 
 ARTICLE 7: OPERATING EXPENSES 

7.01. Operating Expenses. 

(a) “Operating Expenses” shall mean all costs and expenses of whatever nature associated with the ownership, operation,
management, cleaning, maintenance or repair of the Property, and of all Building Systems. Operating Expenses include the costs and expenses incurred in connection with the following (subject to the limitations and exclusions set forth in this
Section 7.01): compliance with Landlord’s obligations under Sections 6.01. 6.02 and 10.03; planting and landscaping; snow removal; utility, water and sewage services (in each case to the extent not metered to
and payable by specific tenants of the Building); maintenance of signs; supplies, materials and equipment purchased or rented; total wage and salary costs paid to, and all contract payments made on account of, all persons engaged in the management,
operation, maintenance, security, cleaning and repair of the Property, including Social Security, old age and unemployment taxes and so-called “fringe benefits”; services generally furnished to
tenants of the Property; maintenance, repair and replacement of Building equipment and components; utilities consumed and expenses incurred in the operation, maintenance and repair of the Property; costs incurred by Landlord in the performance of
its obligations under the Agreements; costs incurred by Landlord to comply with the terms and conditions of any governmental approvals affecting operations of the Property; workers’ compensation insurance and property, liability and other
insurance premiums; personal property taxes; rental or lease payments paid by Landlord for rented or leased personal property used in the operation or maintenance of the Property (provided that any such payments made to Affiliates of Landlord shall
not exceed the amount otherwise payable in an arm’s length transaction); rental or license payments paid by Landlord for parking areas to be made available for use by tenants of the Property; fees for required licenses and permits; routine
maintenance and repair of Parking Facilities (whether situated on or off of the Property) and paving, including sweeping, striping, repairing, repaving and resurfacing; refuse removal; security; shuttle and other transportation services operated or
contracted for by Landlord to provide transportation for employees of tenants of the Property between the Property and mass transit locations (which shuttle may service other locations owned or controlled by Landlord, in which case Landlord shall
equitably allocate the costs of such shuttle between the various properties); and property management fees (provided, however, that for purposes of calculating Operating Expenses under this Lease, no property management fee in excess of two
(2%) percent of Base Rent shall be included). Landlord may use third parties or Affiliates to perform any of these services, and the cost thereof shall be included in Operating Expenses, so long as such third parties are professional and such costs
are comparable to market rate costs. Costs referred to in this Section shall be ascertained in accordance with generally accepted accounting principles and allocated to appropriate fiscal periods on the accrual method of accounting. As of the Date
of Lease, Landlord’s estimate of Operating Expenses for the first Lease Year is $5.52 per rentable square foot of the Premises, but such amount is only an estimate and shall not govern over the actual amount of Operating Expenses for the first
Lease Year as determined in accordance with the provisions of this Article. 

  
 17 

 (b) Operating Expenses shall only include capital expenditures that (A) are for the
primary purpose of reducing Operating Expenses (and then only to the extent that the amount of any annual amortization amount otherwise calculated pursuant to this subsection (b) does not exceed the amount of such savings on an annual basis, as
reasonably determined by Landlord), or (B) are required by changes in Legal Requirements or Insurance Requirements occurring after the Delivery Date. Any capital expenditures not excluded from Operating Expenses pursuant to this paragraph shall
be amortized over the useful life of the item in question as reasonably determined by Landlord in accordance with the relevant provisions of the Internal Revenue Code and the regulations promulgated thereunder, as amended from time to time, together
with interest at Landlord’s actual interest rate incurred in financing such capital expenditures, or, if no part of such expenditure is financed, at an imputed interest rate equal to the Prime Rate plus 2%. 

(c) Notwithstanding anything contained herein to the contrary, in no event shall Operating Expenses include any of the following: 

 

	 	(1)	 expenses incurred by Landlord to lease space to new tenants or to retain existing tenants including marketing
costs, brokerage commissions and concessions and leasehold improvement costs, finders’ fees, attorneys’ fees and expenses, entertainment costs and travel expenses; 

 

	 	(2)	 debt service; 

  

	 	(3)	 attorneys’ fees incurred in connection with lease negotiations or disputes with individual tenants, and
other expenses and attorneys’ fees to resolve disputes, enforce or negotiate lease terms with prospective or existing tenants or in connection with any financing, sale or syndication of the Property; 

 

	 	(4)	 accountants’ fees incurred in connection with disputes with individual tenants and/or the existence,
maintenance or non-Property related operations of the legal entity or entities of which Landlord is comprised. Without limitation, the foregoing shall not exclude the costs of preparing financial statements
for Operating Expenses; 

  

	 	(5)	 the cost of any special work or service performed for any tenant (including Tenant) or licensee, such as
after-hours HVAC service, which is billable to such tenant or licensee, or any costs in connection with services or benefits that are provided to or for the particular benefit of specific (but less than all of) the tenants and billable to them, and
expenses for any item or service not provided to Tenant but to certain other tenant(s) in the Building; 

  

	 	(6)	 the cost of any items for which Landlord is reimbursed by insurance, condemnation, licensees, tenants (other
than through general operating expense provisions) or otherwise; 

  

	 	(7)	 the cost of any additions, changes, replacements, painting, decorating, renovations and other items that are
made solely in order to prepare tenant space for a new tenant’s occupancy, or the cost of any other work in any space leased to an existing or prospective tenant or other occupant of the Building or the Property; 

 

	 	(8)	 interest, principal, points and fees, amortization or other costs and expenses associated with any debt or
amortization payments on any mortgage or deed to secure debt and rental under any ground lease, master space lease or other underlying lease; 

  

	 	(9)	 any expenses for repairs or maintenance to the extent reimbursed due to warranties and service contracts;

  

	 	(10)	 any cost that Tenant pays for directly (either to Landlord or a third party); 

 

	 	(11)	 any cost for which Landlord is reimbursed by a warranty that Landlord is required to obtain in connection with
the Property pursuant to this Lease or that Landlord otherwise obtains in connection with the Property; 

  

	 	(12)	 any amounts paid to an Affiliate of Landlord for the performance of services that is in excess of the amount
that would have been paid on an arm’s length basis in the absence of such relationship; 

  

	 	(13)	 depreciation and amortization of the Property or any part thereof (except as otherwise provided in
Section 7.01(b) above); 

  

	 	(14)	 salaries and bonuses and benefits of officers, executives of Landlord and administrative employees above the
grade of property manager or building supervisor, and if a property manager or building supervisor or any personnel below such grades are shared with other buildings or has other duties not related to the building containing the Premises, only the
allocable portion of such person’s or persons’ salary, bonuses, and benefits shall be included in Operating Expenses; 

  
 18 

	 	(15)	 Landlord’s general overhead and administrative expenses; 

 

	 	(16)	 any capital expenditures, except to the extent expressly permitted pursuant to this
Section 7.01; 

  

	 	(17)	 expenses incurred by Landlord to the extent the same are chargeable to any other tenant or occupant of the
Property, or to any third party; 

  

	 	(18)	 management fees in excess of two percent (2%) of Base Rent; 

 

	 	(19)	 any cost incurred by the negligence or willful misconduct of Landlord, its agents and employees;

  

	 	(20)	 penalties, fines and other costs incurred due to violation by Landlord of any lease or any Legal Requirements
applicable to the Building, and any interest or penalties due for late payment by Landlord of any of the Operating Expenses; 

  

	 	(21)	 Taxes; 

  

	 	(22)	 reserves; 

  

	 	(23)	 cost of alterations, capital improvements, equipment replacement and other items which under generally accepted
accounting principles are properly classified as capital expenditures except as provided in Section 7.01(b); 

  

	 	(24)	 payments for rented equipment, the cost of which equipment would constitute a capital expenditure of the
equipment were purchased; 

  

	 	(25)	 costs and expenses incurred by Landlord in connection with the repair of damage to the Building or Property
caused by fire or other casualty, insured or required to be insured against hereunder, other than the deductible amount under such insurance policies; 

  

	 	(26)	 the cost of correcting defects in the initial construction of the Building; 

 

	 	(27)	 the cost of any item for which Landlord is reimbursed through condemnation awards; 

 

	 	(28)	 insurance premiums to the extent any unusual tenant activity causes Landlord’s existing insurance premiums
to increase or requires Landlord to purchase additional insurance, but only to the extent such additional cost can be identified by the insurer and are not passed through by Landlord to a specific tenant; 

 

	 	(29)	 the costs of all purchases of supplies for the Building or Property which create a larger than 90-day inventory; 

  

	 	(30)	 intentionally deleted; 

 

	 	(31)	 costs and expenses of investigating, monitoring and remediating hazardous materials which were present on or
beneath the surface of the Property as of the Date of Lease; and 

  

	 	(32)	 intentionally deleted. 

Tenant shall pay Tenant’s Pro Rata Share of Operating Expenses in accordance with Section 4.02. 

  
 19 

 ARTICLE 8: INSURANCE 

8.01. Coverage. Tenant shall maintain throughout the Term, at its sole cost and expense, insurance for the benefit of Tenant and
Landlord (as their interests may appear) from insurers licensed to do business in the state in which the Property is located, rated at least “A:IX” by A.M. Best, with terms and coverages reasonably satisfactory to Landlord, and with such
increases in limits as Landlord may from time to time require (provided that such limits are the same as those then being provided by similar types of tenants in the greater Boston area under leases of similar types of premises). Initially, Tenant
shall maintain the following on an occurrence basis (except as otherwise expressly provided below): 
  

	 	(A)	 Commercial general liability insurance on an occurrence basis naming Landlord, Landlord’s managing agent
and Landlord’s mortgagee(s) of which Tenant has received prior written notice from time to time as additional insureds, insuring against all claims and demands for personal injury liability (including bodily injury, sickness, disease, and
death) or damage to property, with combined single limits of not less than $5,000,000 per occurrence and $5,000,000 in the aggregate, which coverages may be effected by primary or excess coverage. The policy shall not contain any intra-insured
exclusions as between insured persons or organizations, but shall include coverage for liability assumed under this Lease as an “insured contract” for the performance of Tenant’s indemnity obligations under this Lease. Such insurance
shall be primary and not contributing to any insurance available to Landlord, and Landlord’s insurance (if any) shall be in excess thereto; 

  

	 	(B)	 Property insurance covering property damage and business interruption. Covered property shall include
all Tenant improvements in the Premises other than the Initial Tenant Work, but including all other Tenant Work, and Tenant’s Property. Such insurance, with respect only to Tenant Work, shall name Landlord and Landlord’s mortgagees of
which Tenant has received written notice from time to time as additional loss payees as their interests may appear. Such insurance shall be written on an “all risk” of physical loss or damage basis including the perils of fire, extended
coverage, windstorm, vandalism, malicious mischief, sprinkler leakage, and such other risks Landlord may from time to time designate (provided that insurance for such risks is then commercially available at commercially reasonable rates and is being
carried by similar tenants for research and laboratory facilities in the vicinity of the Property), for the full replacement cost of the covered items and in amounts that meet any co-insurance clause of the
policies of insurance, with a deductible amount not to exceed a then-commercially reasonable deductible, which initially shall be no greater than $50,000; 

  

	 	(C)	 Workers’ compensation insurance with statutory benefits and employers liability insurance in the following
amounts: each accident, $1,000,000; disease (policy limit), $1,000,000; disease (each employee), $1,000,000; 

  

	 	(D)	 Pollution legal liability insurance covering first and third party claims for
clean-up costs, personal injury and property damage on an on-site and off-site basis, with a single claim and aggregate claim
amount of Three Million Dollars ($3,000,000.00), naming Landlord, Landlord’s managing agent and Landlord’s mortgagee(s) from time to time as additional insureds. The parties acknowledge and agree that the insurance required by this
paragraph (D) shall not include coverage for pre-existing environmental conditions at the Property as of the Date of Lease; and 

 

	 	(E)	 During all construction by Tenant, Tenant shall maintain with respect to the Premises and Property adequate
builder’s risk insurance, in form and amount reasonably satisfactory to Landlord based upon the scope of work, (and Landlord, its mortgagees of which Tenant has received written notice, and any ground or master lease lessors of which Tenant has
received written notice shall be named as an additional insured party as their interest may appear). 

 Tenant shall give
Landlord certificate(s) evidencing (i) the coverages required by Sections 8.1(A), (B) and (C) on or before the Date of Lease, which coverages shall be effective as of such date, (ii) the coverage required by
Section 8.1(D) not later than thirty (30) days prior to the earlier of either (x) the first delivery of Hazardous Materials to the Property for Tenant’s use or (y) Tenant’s occupancy of any portion
of the Premises for the conduct of business therein, which coverage shall be effective not later than the earlier of the dates set forth in the foregoing clauses (x) and (y), and (iii) the coverage required by
Section 8.1(E) not later than thirty (30) days prior to the date on which Tenant anticipates that Tenant’s Contractor will commence its on-site mobilization for the
performance of the Initial Tenant Work, which coverage shall be effective not later than the date on which Tenant’s Contractor actually commences such on-site mobilization. Thereafter, Tenant shall
provide 

  
 20 

 
certificates of each insurance coverage required by this Section not less than thirty (30) days before the expiration of such insurance coverage. All insurance certificates required to be
provided by Tenant shall state that such coverages may not be canceled or amended so as to materially adversely affect Landlord’s interest without at least ten (10) days’ prior written notice to Landlord and Tenant for cancellation
due to non-payment and thirty (30) days’ prior written notice to Landlord and Tenant for other cancellations or amendments. All deductible amounts or self-insured retentions shall be subject to
Landlord’s prior written approval (which shall not be unreasonably withheld, conditioned or delayed), and shall be the sole responsibility of Tenant. In addition, Tenant shall cause Tenant’s Contractor to provide to Tenant on or before the
Date of Lease certificates evidencing the coverages required by Sections 8.1(A), (B) and (C) maintained by Tenant’s Contractor, and naming as additional insureds Landlord, Landlord’s managing agent and Landlord’s
mortgagee(s) of which Tenant has received prior written notice from time to time, which coverages shall be effective as of such date, and thereafter to provide to Landlord certificates of each such insurance coverage not less than thirty
(30) days before the expiration of such insurance coverage. 
 If Tenant does not procure the insurance required pursuant to this
Section, or keep the same in full force and effect, Landlord may, but shall not be obligated to, take out the necessary insurance and pay the premium therefor after notice thereof to Tenant, and Tenant shall repay to Landlord, as Additional Rent,
the amount so paid (together with interest thereon at the Default Rate) within ten (10) days of demand. In addition, Landlord may recover from Tenant, as Additional Rent, any and all reasonable expenses (including reasonable attorneys’
fees) and damages which Landlord may sustain by reason of the failure by Tenant to obtain and maintain such insurance, it being expressly declared that the expenses and damages of Landlord shall not be limited to the amount of the premiums thereon.
The foregoing rights and remedies of Landlord shall not be deemed to waive any default or Event of Default under this Lease resulting from any such failure by Tenant to procure or to maintain in full force and effect any insurance required by this
Section. 
 8.02 Avoid Action Increasing Rates. Tenant shall not use or permit any use of the Premises beyond the Permitted Use that
in any way that will make voidable any insurance on the Property, or on the contents of the Property, or which shall be contrary to any requirements from time to time established or made by Landlord’s insurer, or which increases the cost of
Landlord’s insurance or requires additional insurance. Tenant shall cure any breach of this Section within ten (10) days after notice from Landlord or Tenant otherwise learning of such by (i) stopping any use that jeopardizes any
insurance coverage or increases its cost or (ii) paying the increased cost of insurance. Tenant shall have no further notice or cure right under Article 13 for any such breach. Tenant shall reimburse Landlord within ten (10) days of
demand, as Additional Rent, for all of Landlord’s costs reasonably incurred in providing any insurance that is attributable to any special endorsement or increase in premium resulting from the business or operations of Tenant other than those
customarily associated with laboratory use for the type of medical research conducted by Tenant, and any special or extraordinary risks or hazards resulting therefrom, including any risks or hazards associated with the generation, storage and
disposal of Hazardous Materials. 
 8.03. Waiver of Subrogation. Landlord and Tenant each waive any and every claim for recovery from
the other for any and all loss of or damage to the Property or any part of it, or to any of its contents, which loss or damage is covered by valid and collectible property insurance (or which would have been covered had the insurance policies
required to be maintained by Tenant or Landlord under this Lease been in force, to the extent that such loss or damage would have been recoverable under such policies). This mutual waiver precludes the assignment of any such claim by subrogation (or
otherwise) to an insurance company (or any other person), and Landlord and Tenant each agree to give written notice of this waiver to each insurance company that has issued or shall issue any property insurance policy to it, and to have such
policies properly endorsed, if necessary, to prevent invalidation of the insurance coverage because of this waiver. In consideration of the foregoing, each of the parties hereto agrees with the other party that such insurance policies as it may have
in effect during the Term of this Lease shall include a clause or endorsement which provides in substance that the insurance company waives any right of subrogation which it might otherwise have against Landlord, Landlord’s managing agent, or
Tenant. 
 8.04. Landlord’s Insurance. Landlord may, in its sole and absolute discretion, but shall not be obligated to, purchase
and maintain during the Term with insurance companies qualified to do business in the state where the Property is located, such insurance as Landlord deems appropriate, which insurance may include the following: (i) commercial general liability
insurance for incidents occurring in the common areas, with coverage for premises/operations, personal and advertising injury, products/completed operations and contractual liability for bodily injury and property damage, with limits and deductibles
as determined by Landlord, and (ii) property insurance covering property damage to the Building, including the Initial Tenant Work but excluding any other Tenant Work. Throughout the Term, Landlord shall maintain, with responsible companies
qualified to do business in the Commonwealth of Massachusetts, insurance on the Building covering the same against fire and other casualty covered in an “all-risk” policy, at its full replacement
cost. As set forth in Section 4.02, the cost of any such insurance shall be borne by Tenant and other tenants as part of Operating Costs. 

  
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 ARTICLE 9: USE OF PREMISES 

9.01. Permitted Uses. Tenant shall use the Premises only for the Permitted Uses described in Article 1 and
for no other use. Tenant shall keep the Premises equipped with appropriate safety appliances to the extent required by applicable Legal Requirements or Insurance Requirements. Tenant shall not cause or permit any potentially harmful air emissions,
or other objectionable odors or emissions exceeding those typically emitted from normal laboratory operations similar to those conducted by Tenant, to emanate from or permeate the Premises. Tenant shall not conduct or permit any auctions or
sheriff’s sales at the Property. 
 9.02. Indemnification. Tenant is responsible for the Premises and any Tenant’s
improvements, equipment, facilities and installations, wherever located on the Property and all liabilities, including tort liabilities, incident thereto, except to the extent caused by the negligence or willful misconduct of Landlord,
Landlord’s agents, employees, contractors or invitees, or the Indemnitees. Except to the extent caused by the negligence or willful misconduct of Landlord, Landlord’s agents, employees, contractors or invitees, or the Indemnitees, Tenant
shall indemnify, save harmless and defend Landlord and Landlord’s partners, shareholders, members, managers, owners, officers, mortgagees, ground lessors, agents, employees, independent contractors, Landlord’s managing agent and other
persons acting under them (collectively, “indemnitees”) from and against all liability, claim, damage, loss or cost (including reasonable attorneys’ fees) to the extent arising from (i) any alleged or actual injury, loss,
theft or damage to any person or property while on the Premises; (ii) any alleged or actual injury, loss, theft or damage to any person or property while on the Property or in the Building (other than within the Premises) to the extent arising
from the acts or omissions of Tenant or persons claiming by, through or under Tenant, or any of their respective officers, employees, agents, servants, contractors or invitees (collectively, “Tenant Parties”); (iii) failure of
Tenant or any Tenant Party to comply with any provision of this Lease; or (iv) the use of the Premises, the Property or the Building by Tenant or any Tenant Party, in each case under (i) through (iv) above paying any cost to Landlord on
demand as Additional Rent. 
 Except to the extent caused by the negligence or willful misconduct of Tenant or Tenant Parties, Landlord
shall indemnify, save harmless and defend Tenant and Tenant Parties from and against all liability, claim, damage, loss or cost (including reasonable attorneys’ fees) to the extent arising from (i) the negligence or willful misconduct of
Landlord, Landlord’s agents, employees, contractors or invitees, or the Landlord Indemnitees, or (ii) the failure of Landlord, Landlord’s agents, employees, contractors or invitees, or the Indemnitees, to comply with any provision of
this Lease. 
 The provisions of this Section shall survive the expiration or earlier termination of this Lease. 

9.03. Compliance With Legal Requirements. 

(a) Tenant shall not permit the Premises, or cause the Premises or the Property or the Building, to be used in any way that violates any
applicable law, code, ordinance, restrictive covenant or other encumbrance of record, governmental regulation, order, permit, approval or any other governmental consent (each a “Legal Requirement”), or that unreasonably interferes
with the use of other portions (i.e., other than the Premises) of the Property by other tenants of the Property, or constitutes a nuisance or waste. Tenant shall, at its sole cost and expense, be responsible for material compliance with all Legal
Requirements applicable to the Premises (or to the Property by reason of Tenant’s use and occupancy of the Premises) or to Tenant’s use thereof. The foregoing notwithstanding, Landlord, and not Tenant, shall be responsible for making all
improvements and alterations to the common areas of the Building which are required to cause the same to comply with all present and future Legal Requirements (the cost of which shall be included in Operating Expenses pursuant to
Section 7.01(b). Furthermore, Tenant shall not be responsible for any violation of a Legal Requirement or Environmental Law (i) that occurred prior to the Delivery Date, (ii) that occurred in connection with the
Base Building Work or (iii) to the extent that such violation was caused by the negligence or willful misconduct of Landlord or Landlord’s agents, employees, contractors or invitees. 

(b) Tenant shall be responsible, at its sole cost and expense, for procuring and maintaining in full force and effect, and complying at all
times with, any and all necessary permits, certifications, permissions and the like and complying with any reporting requirements directly relating or incident to the conduct of its activities on the Premises. Within ten (10) Business Days of a
request by Landlord, which request shall be made not more than once during each period of twelve (12) consecutive months during the Term hereof, unless otherwise requested by any mortgagee of Landlord or prospective purchaser of the

  
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Property, Tenant shall furnish Landlord with copies of all such permits that Tenant has obtained together with a certificate certifying that Tenant is in material compliance with all Legal
Requirements and Environmental Laws applicable to its use and occupancy of the Premises, or, if applicable, identifying any violations of which Tenant is aware and which are Tenant’s obligation to cure under the terms hereof, and setting forth
the steps which Tenant is taking to cure such violations. Tenant shall promptly give notice to Landlord of any written warnings or violations resulting from Tenant’s use or occupancy of, or any condition within, the Premises (including building
code violations, fire safety code violations, wastewater management violations, OSHA violations, or violations of Legal Requirements (including Environmental Laws)) received from any federal, state, or municipal agency or any court of law within ten
(10) Business Days after Tenant’s receipt of such notice and, to the extent that the cure of such violation is Tenant’s obligation hereunder, shall promptly cure the conditions causing any such violations. Tenant shall not be deemed
to be in default of its obligations under the preceding sentence to promptly cure any condition causing any such violation in the event that, in lieu of such cure, Tenant shall contest the validity of such violation, or apply for a variance or
permission to allow such use by appellate or other proceedings permitted under applicable Legal Requirements, provided that: (i) any such contest is made reasonably and in good faith, (ii) Tenant makes provisions reasonably acceptable to
Landlord, including posting bond(s) or giving other security reasonably acceptable to Landlord, to protect Landlord and its mortgagees, the Building and the Property from any liability, costs, damages or expenses arising in connection with such
violation and failure to cure, (iii) Tenant agrees to indemnify, defend (with counsel reasonably acceptable to Landlord) and hold Landlord and its mortgagees harmless from and against any and all liability, costs, damages, or expenses arising
in connection with such condition and/or violation, except to the extent to which such condition was caused by the negligence or willful misconduct of Landlord or Landlord’s employees, agents, contractors or invitees, (iv) Tenant shall
promptly cure any violation in the event that its appeal of such violation is overruled or rejected, (v) Tenant shall certify to Landlord’s and its mortgagees’ reasonable satisfaction that Tenant’s decision to delay such cure
shall not result in any actual or threatened bodily injury or property damage to Landlord, any tenant or occupant of the Building or the Property or any other person or entity, and (vi) this Lease is in full force and effect and no Event of
Default has occurred and is then continuing. 
 9.04. Hazardous Materials. 

(a) “Environmental Law” shall mean all statutes, laws, rules, regulations, codes, ordinances, standards, guidelines,
authorizations and orders of federal, state or local public authorities now in force or hereafter enacted, modified, or amended pertaining to the protection of the environment or to health or safety risks arising therefrom, including, but not
limited to, control of air pollution, water pollution, groundwater pollution, and the generation, manufacture, management, handling, use, sale, transportation, delivery, discharge, emission, treatment, storage, disposal, release or threatened
release of Hazardous Materials. To the extent applicable, such laws include, but are not limited to: (1) the Clean Air Act, 42 U.S.C. § 7401, et seq.; (2) the Clean Water Act, 33 U.S.C. § 1251, et seq.; (3) the Safe Drinking Water
Act, 42 U.S.C. § 300f, et seq.; (4) the Resource Conservation and Recovery Act, 42 U.S.C. § 6901, et seq.; (5) the Comprehensive Environmental Response, Compensation and Liability Act, 42 U.S.C. § 9601, et seq.; (6) the Toxic
Substances Control Act, 15 U.S.C. § 2601, et seq.; (7) Title III of the Superfund Amendments and Reauthorization Act, also known as the Emergency Planning and Community
Right-to-Know Act, 42 U.S.C. § 11001; (8) the Hazardous Materials Transportation Act, 49 U.S.C. § 1801 et seq.; (9) federal regulations promulgated pursuant to
any of the foregoing statutes; (10) Massachusetts laws and regulations enacted in order to implement federal environmental statutes and regulations; (11) the Massachusetts Hazardous Waste Management Act, M.G.L. c. 21C; (12) the
Massachusetts Oil and Hazardous Materials Release Prevention and Response Act, M.G.L. c. 21E; (13) the Hazardous Substances Disclosure by Employers Act, M.G.L. c. 111F; (14) Massachusetts regulations promulgated pursuant to the authority
of applicable state environmental laws; and (15) local ordinances and regulations. 
 “Hazardous Materials” shall
mean, but shall not be limited to, any products, hazardous substances, hazardous waste, toxic substances, environmental, biological, pathological, chemical, radioactive materials, waste or substances, oil or petroleum products and any material,
waste or substance, which because of its quantitative concentration, chemical, biological, radioactive, flammable, explosive, infectious, or other characteristics, constitutes or may reasonably be expected to constitute or contribute to a danger or
hazard to public health, safety or welfare or to the environment, including any asbestos (whether or not friable) and any asbestos-containing materials, lead paint, waste oils, solvents and chlorinated oils, polychlorinated biphenyls (PCBs), toxic
metals, etchants, pickling and plating wastes, explosives, reactive metals and compounds, pesticides, herbicides, radon gas, urea formaldehyde foam insulation and chemical, biological and radioactive wastes, or any other materials or substances that
are mentioned under or regulated by any Environmental Law; and including any other products or materials subsequently found by an authority of competent jurisdiction (excluding the U.S. Food & Drug Administration) to have adverse effects on
the environment or the health and safety of persons. 

  
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 (b) Tenant, at its sole cost and expense, shall comply with all Environmental Laws
pertaining to the transportation, use, storage, generation, disposal, release or discharge of Hazardous Materials to, from or at the Property by Tenant or any Tenant Party, including obtaining all required permits and approvals. Provided that the
same is performed at all times in accordance with the provisions of this Lease, Tenant may generate, produce, bring upon, use, store or treat Hazardous Materials in the Premises which are (a) typically found in commercial construction sites
(which shall apply only during such time as Tenant is performing construction at the Property as provided for in this Lease), (b) cleaning products or office supplies typically used in laboratory/office space, and (c) materials otherwise used
in the ordinary course of Tenant’s operations and typically found in other leased laboratory space used for comparable purposes, as reasonably needed for Tenant’s operations and research activities, and strictly in accordance with
Environmental Laws. In all events Tenant shall comply with all applicable provisions of the standards of the U.S. Department of Health and Human Services as further described in the USDHHS publication Biosafety in Microbiological and Biomedical
Laboratories (5th Edition, December 2009) as it may be further revised, or such nationally recognized new or replacement standards as may be reasonably selected by Landlord. Except as otherwise set forth above, Tenant shall not cause or permit any
Hazardous Materials to be generated, produced, brought upon, used, stored, treated or disposed of to, from, or in or about the Property by Tenant or any Tenant Party without Landlord’s prior written consent, which may be withheld in
Landlord’s sole discretion. Any Hazardous Materials permitted to be stored on the Premises pursuant to this paragraph shall be stored in areas of the Premises exclusively designated by Tenant for such purpose to the extent required by Legal
Requirements (including the areas described in Section 2.01(f). In no event shall any Hazardous Materials be generated, stored, used or disposed of outside of the Premises except for the portions of the Property described in
Section 2.01(f). Tenant shall not dispose of Hazardous Materials from the Premises to any other location except in strict compliance with all applicable Environmental Laws, nor permit any persons acting under it to do so.
Notwithstanding the foregoing, Tenant shall not, in any event, be responsible for any Hazardous Materials to the extent such Hazardous Materials are introduced to the Property by anyone other than Tenant or any Tenant Party. 

(c) Within ten (10) Business Days after taking initial occupancy of the Premises, Tenant shall provide to Landlord a list of all Hazardous
Materials used, stored or generated by Tenant in the Premises, including quantities of each anticipated to be used, together with the material safety data sheet (“MSDS”) for each such Hazardous Material. Thereafter, within ten
(10) Business Days of Landlord’s request (which request shall not be made more than two (2) times per 12-month period), Tenant shall provide Landlord with an updated list of all Hazardous
Materials used, stored or generated by Tenant in the Premises, including quantities of each used, together with the MSDS for each such Hazardous Material. From time to time at Landlord’s request, Tenant shall execute affidavits, certifications
and the like, in form reasonably acceptable to Tenant, to the best of Tenant’s knowledge and belief, regarding the presence or absence of Hazardous Materials on the Premises, the Property or the Building used, stored, generated, disposed of or
released by Tenant or any Tenant Party. Furthermore, within fifteen (15) days after Landlord’s request, Tenant shall make available to Landlord at the Premises, for review and audit by Landlord, all of Tenant’s books and records
relating to the types and amounts of all Hazardous Materials being generated, produced, brought upon, used, stored or disposed of by or on behalf of Tenant at, on or from the Premises, together with copies of any federal, state or municipal filings
or compliance reports made by Tenant with respect to such Hazardous Materials that are required by applicable Environmental Law. Tenant agrees to pay the cost of any environmental inspection or assessment requested by any governmental agencies,
mortgagees of the Property, or by any insurance carrier to the extent that such inspection or assessment pertains to any release, threat of release, contamination, claim of contamination, loss or damage or deterioration of condition in the Premises
caused by or alleged to be caused by Tenant or any Tenant Party (collectively, “Environmental Incidents”). Notwithstanding anything to the contrary contained in this Section 9.04, to the extent that any
disclosure, affidavit or similar document to be provided to Landlord under this Section 9.04 would otherwise be required to disclose proprietary information concerning chemicals, substances or materials synthesized by
Tenant from constituent Hazardous Materials, such disclosure may exclude such proprietary information provided that the constituent Hazardous Materials (but not the manner, quantities or concentrations in which they are combined to form such
chemicals, substances or materials) are identified therein. 
 (d) Landlord shall not be liable to Tenant or any Tenant Party or to any
person or governmental authority whatsoever for any release of Hazardous Materials brought to the Premises by or on behalf of Tenant at any time during the Term, except to the extent caused by the negligence or willful misconduct of Landlord or its
employees, agents, contractors or invitees. Landlord shall have the right, from time to time during the Term, but not more than once in any 12-month period unless either Tenant is in default of its obligations
under this Section 9.04 or Landlord has reason to believe that a release of Hazardous Materials has occurred on, at or from the Premises caused by Tenant or a Tenant Party, to enter upon the Premises upon reasonable prior
notice to Tenant to perform environmental audits relating to the operations of Tenant and all those claiming through Tenant on the Premises, including (i) reviewing records relating to compliance with Environmental Laws and industry standards
applicable to the generation, handling, use, storage and disposal of Hazardous Materials, (ii) observing techniques for handling, storing, using and disposing of Hazardous Materials, (iii) reviewing documentation relating to the off-Premises disposal of Hazardous Materials from the Premises, and (iv) conducting such tests as Landlord reasonably deems appropriate, all such work to be performed at Landlord’s sole expense except as
otherwise provided in the next sentence. In addition to, and not in limitation of the rights provided in the immediately preceding sentence, if required by any governmental agency or if Landlord reasonably believes that a release of Hazardous
Materials has 

  
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occurred on or from the Premises by Tenant or any Tenant Party or a threat of release exists arising from Hazardous Materials not being handled, stored, used or disposed of by Tenant or any
Tenant Party in accordance with the requirements of this Lease and all applicable Environmental Laws, then Landlord may, but need not, perform appropriate testing and the reasonable costs thereof shall be reimbursed to Landlord by Tenant within ten
(10) Business Days of demand, as Additional Rent, except that Landlord shall bear the cost of such testing if (i) Landlord (rather than a governmental agency) requested such testing and (ii) such testing determines that no such
release has occurred as a result of the actions of Tenant or any Tenant Party and that Hazardous Materials are being handled, used, stored and disposed of in compliance with the terms of this Lease and all applicable Environmental Laws. Tenant shall
cooperate with Landlord in connection with any environmental audits or other inspections or testing performed by Landlord pursuant to this Section. Landlord and any third parties conducting such audits and/or inspecting Tenant’s books and
records shall enter into reasonable non-disclosure and confidentiality agreements with Tenant, in form reasonably acceptable to Landlord and Tenant. 

(e) If any transportation, generation, storage, use or disposal of Hazardous Materials on or about the Premises, the Building or the Property
by Tenant or any Tenant Party, results in the threat of release, release onto, or other contamination of any portion of the Property or adjacent areas, including building or parking areas, soil or surface or ground water, or any loss or damage to
person(s) or property, Tenant agrees to: (a) notify Landlord immediately, once Tenant has knowledge or has received notice, of any release, threat of release, contamination, claim of contamination, loss or damage, and (b) after
consultation with Landlord, clean up the release, threat of release, or contamination in compliance with all applicable Environmental Laws or Legal Requirements. In the event of such contamination, Tenant agrees to cooperate fully with Landlord and
to provide such documents, affidavits and information as may be reasonably requested by Landlord (1) to comply with any Environmental Law or Legal Requirement, (2) to comply with the request of any lender, purchaser or tenant, and/or
(3) for any other reason reasonably deemed necessary by Landlord. Tenant shall notify Landlord promptly in the event of any spill or other release of any Hazardous Material at, in, on, under or about the Premises or the Property by Tenant or
any Tenant Party that is required to be reported to a governmental authority under any Environmental Law or Legal Requirement, shall promptly forward to Landlord copies of any written notices received by Tenant relating to alleged violations of any
Environmental Law or Legal Requirement and shall promptly pay when due any fine or assessment against Landlord, Tenant, the Premises or the Property relating to any violation of any Environmental Law or Legal Requirement by Tenant or any Tenant
Party, to the extent that compliance with such Environmental Law or Legal requirement is Tenant’s obligation. If any governmental authority files a lien against the Premises or the Property due to any act or omission, intentional or
unintentional, of Tenant or any Tenant Party that results or has resulted in the releasing, spilling, leaking, leaching, pumping, emitting, pouring, emptying or dumping of any Hazardous Material, Tenant shall, within ten (10) Business Days from
the date that Tenant is first given notice of such lien (or within such shorter period of time as may be specified by Landlord if such governmental authority takes steps to enforce such lien) either (A) pay the claim and remove the lien or
(B) furnish a cash deposit bond or such other security as is reasonably satisfactory in all respects to Landlord and sufficient to discharge the lien completely. 

(f) Any increase in the premium for necessary insurance on the Premises or the Property which arises from Tenant’s use and/or storage of
Hazardous Materials beyond those typically found in office and laboratory space used for comparable purposes shall be solely at Tenant’s expense. Tenant shall procure and maintain at its sole expense such additional insurance as may be required
to comply with any requirement of any federal, state or local government agency with jurisdiction. 
 (g) Except to the extent caused by the
negligence or willful misconduct of Landlord, its employees, agents, contractors and/or invitees or the Indemnitees, Tenant shall indemnify, defend with counsel reasonably acceptable to Landlord and hold the Indemnitees fully harmless from and
against any and all liability, loss, suits, claims, actions, causes of action, proceedings, judgments, demands, costs, penalties, damages, fines and expenses, including reasonable attorneys’ fees (including reasonable attorneys’ fees of
Landlord’s counsel and costs of litigation), consultants’ fees, laboratory fees and clean-up costs, and the costs and expenses of investigating and defending any claims or proceedings, resulting
from, or attributable to (i) the presence of any Hazardous Materials on or in the Premises, the Building or the Property arising from the act, omission or negligence of Tenant or any Tenant Party, or arising out of the generation, storage,
treatment, handling, transportation, disposal or release by Tenant or any Tenant Party of any Hazardous Materials at or near the Premises or the remainder of the Property from and after such time, and which require remedial action under applicable
Environmental Laws, (ii) any violation(s) by Tenant or any Tenant Party of any Environmental Laws, (iii) any Environmental Incidents (as defined above) and (iv) any breach by Tenant of its covenants and obligations under this
Section 9.04 or Section 10.07. 

  
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 (h) Landlord shall indemnify, defend with counsel reasonably acceptable to Tenant and hold
Tenant fully harmless from and against any and all liability, loss, suits, claims, actions, causes of action, proceedings, judgments, demands, costs, penalties, damages, fines and expenses, including reasonable attorneys’ fees (including
reasonable attorneys’ fees of Tenant’s counsel and costs of litigation), consultants’ fees, laboratory fees and clean-up costs, and the costs and expenses of investigating and defending any
claims or proceedings, resulting from, or attributable to the presence of any Hazardous Materials on or in the Premises, the Building or the Property (i) which were present prior to the Delivery Date and which require remedial action under
applicable Environmental Laws, or (ii) which are generated, stored, treated, handled, transported, disposed of or released by Landlord or any employee, agent, contractor or invitee of Landlord at any time and which require remedial action under
applicable Environmental Laws. 
 (i) The provisions of this Section 9.04 shall survive the expiration of the Term
or the earlier termination of this Lease. 
 (j) Reference is made to Section 10.07 for provisions relating to the
decommissioning of the Premises by Tenant upon the expiration of the Term or the earlier expiration of this Lease. 
 9.05. Signs.
Except as expressly otherwise provided in this Section and except for the Initial Tenant Work, no sign, antenna or other structure or thing shall be erected or placed on the Premises or any part of the exterior of the Building or erected so as
to be visible from the exterior of the Building, without first securing the written consent of Landlord. Landlord, at Landlord’s cost, shall provide building standard signage within the Building lobby identifying Tenant. Landlord shall also
provide to Tenant Tenant’s Pro Rata Share of entries on any Building directory maintained by Landlord within the Building from time to time within the Building. Tenant shall have the right to install one (1) sign on the Building facade, at
a location approved in advance by Landlord, subject to (i) the approval of Landlord as to the size, shape, color, method of illumination and method of installation of such sign (which approval shall not be unreasonably withheld, delayed or
conditioned), and (ii) the issuance to Tenant of all licenses, permits and approvals required from any governmental authority in connection with the installation or maintenance of such sign. Landlord hereby approves the drawing of a Building
façade sign attached hereto as Exhibit L, as to the approximate size, design and location of the sign, and that the sign may be illuminated (all subject to Tenant’s obligation as to licenses, permits and approvals
with respect to such sign as set forth in this Section). The final size, design and location and the method of illumination of such Building façade sign shall be subject to Landlord’s approval, not to be unreasonably withheld,
conditioned or delayed. Tenant shall not have the right to install any monument sign or any name or logo plate on any monument sign which is from time to time installed by Landlord. Tenant shall be solely responsible, at its sole cost and expense,
for (A) obtaining and maintaining in full force and effect all licenses, permits and approvals required from any governmental authority in connection with the installation or maintenance of all exterior signage, and (B) the installation,
maintenance and repair of all exterior signage, and shall maintain the same in good condition at all times. Tenant shall further be required, at its sole cost and expense, upon the expiration or earlier termination of the Term, to remove
Tenant’s signage installed on the Building facade and to repair all damage caused by such removal to Landlord’s reasonable satisfaction. 

9.06. Landlord’s Access. Subject to the provisions of this Section, Landlord or its agents may enter the Premises at all reasonable
times to show the Premises to potential buyers, investors, tenants (but with respect to potential tenants, only in the final twelve (12) months of the Term) or other parties; to inspect and conduct tests in order to monitor Tenant’s
compliance with Legal Requirements governing Hazardous Materials; for purposes described in Sections 2.01, 9.04, 10.03 and/or 10.04(b); or for any other purpose Landlord reasonably deems necessary. No prospective lender, purchaser, or tenant
claiming through Landlord shall be permitted access to the Premises without a representative of Landlord present. Except in the event of an emergency posing an imminent threat of personal injury or damage to the Property (in which event notice shall
be provided as soon as reasonably practicable), Landlord shall give Tenant at least one (1) Business Day’s prior notice (which may be oral) of any entry by Landlord into the Premises. Unless otherwise authorized by Tenant in advance, any
entry into the following secured areas within the Premises: laboratory space and areas identified in Section 2.01(f) for the storage of Hazardous Materials, other than in case of emergency shall occur only with a representative of Tenant or its
authorized designee present and Tenant agrees to make a representative available for such purpose during Normal Business Hours, Monday through Friday; provided, however, if Tenant’s representative fails to appear for a scheduled
inspection or access by Landlord, Landlord may nevertheless proceed with such scheduled inspection or access. Notwithstanding the foregoing, in case of emergency, Landlord may enter any part of the Premises without prior notice to Tenant provided
that Landlord provides Tenant with notice of such entry as soon as reasonably possible thereafter. Landlord shall use reasonable efforts not to interfere with Tenant’s use and occupancy of the Premises when exercising Landlord’s rights
under this paragraph. Landlord agrees to comply with Tenant’s reasonable requirements (including without limitation requirements in connection with access, health, safety, and/or security checks) in connection with non-emergency access to the Premises to the extent to which the same are consistent with the provisions of this Section and have been provided to Landlord in writing prior to any such entry. Upon request by Tenant,
Landlord and any parties who are given access to the above-described secured areas shall enter into reasonable confidentiality agreements with Tenant, in form reasonably acceptable to both Landlord and Tenant, prior to such access (except in the
event of an emergency). 

  
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 9.07. Landlord’s Rules and Regulations. Tenant and all Tenant Parties shall
observe Landlord’s rules and regulations (the “Rules and Regulations”) promulgated (and amended from time to time) with respect to the occupation and use of the Building and the Property and of general applicability to all
tenants of the Building and the Property (as well as all Rules and Regulations which are applicable only to all tenants which are using their leased premises for purposes similar to Tenant), provided that (i) Tenant receives reasonable prior
written notice of such Rules and Regulations, and (ii) the same are not inconsistent with the provisions of this Lease. All of Landlord’s Rules and Regulations shall be administered in an even handed manner among all occupants of the
Building using their leased premises for similar purposes. Landlord’s initial Rules and Regulations are set forth in Exhibit G attached hereto. The Rules and Regulations may also include, if any portion of the Building is being used as
an animal facility at any time, provisions specifically relating thereto. Nothing contained in this Lease shall be construed to impose upon Landlord any duty or obligation to enforce the terms, covenants or conditions in any other lease as against
any other tenant and Landlord shall not be liable to Tenant for violation of the same by any other tenant or such other tenant’s servants, employees, agents, contractors, visitors, invitees or licensees. 

9.08. Compliance With Insurance Requirements. Tenant and all Tenant Parties shall at all times comply with the terms of any policy of
insurance maintained by Landlord or Tenant and applicable to the Property or the Premises or any portion of either, and all requirements of the issuer of any such policy (in each case, with respect to insurance policies maintained by Landlord, to
the extent Landlord has provided written notice to Tenant of the requirements of such policy(is) or issuer(s)), and all orders, rules, regulations and other requirements of the National Board of Fire Underwriters (or any other body exercising
similar functions) (collectively, “Insurance Requirements”).  
 9.09. Floor Load; Heavy Machinery. Tenant shall not
place a load upon any floor of the Premises exceeding the floor load per square foot of area which such floor was designed to carry and which is allowed by law. Tenant acknowledges receipt from Landlord of the foregoing floor load information.
Landlord reserves the right to prescribe the weight and position of all heavy machinery and mechanical equipment, which shall be placed so as to distribute the weight. Heavy machinery and mechanical equipment shall be placed and maintained by Tenant
at Tenant’s expense in settings sufficient in Landlord’s reasonable judgment to absorb and prevent vibration, noise and annoyance. Tenant shall not move any heavy machinery, heavy equipment, freight, bulky matter, or fixtures into or out
of the Building without Landlord’s prior written consent, which consent shall not be unreasonably withheld, conditioned or delayed. If such machinery, equipment, freight, bulky matter or fixtures requires special handling, Tenant agrees to
employ only persons holding a Master Rigger’s License to do said work, and that all work in connection therewith shall comply with applicable Legal Requirements. Any such moving shall be at the sole risk and hazard of Tenant and Tenant will
defend, indemnify and save Landlord harmless against and from any liability, loss, injury, claim or suit resulting directly or indirectly from such moving, except to the extent caused by the negligence or willful misconduct of Landlord or its
employees, agents or contractors. Proper placement of all such heavy machinery, etc., in the Premises shall be Tenant’s responsibility. 

9.10. LEED/Energy Conservation Measures . Tenant acknowledges that Landlord intends to pursue certification at either a Gold or Silver
level in the Leadership in Energy and Environmental Design Core & Shell program (“LEED-CS”), and has designed and constructed the Building to achieve that goal. Tenant further
acknowledges and agrees that such certification will require Tenant to comply with the following requirements in connection with the design, construction, use and operation of its Premises: 

 

	 	(1)	 Mandatory Leadership in Energy and Environmental Design (LEED) Tenant Compliance. Tenant
shall meet the following design and construction requirements in support of and in compliance with the LEED-CS prerequisites and credits attempted within the base-building
LEED-CS certification application: 

  

	 	a.	 EAp3 Fundamental Refrigerant Management: Any additional HVAC & Refrigeration equipment and/or
systems installed by Tenant must comply with the following: “zero use of chlorofluorocarbon (CFC)-based refrigerants in new heating, ventilating, air conditioning and refrigeration (HVAC&R) systems. Small HVAC units (defined as
containing less than 0.5 pounds (228 grams) of refrigerant) and other equipment, such as standard refrigerators, small water coolers and any other equipment that contains less than 0.5 pounds (228 grams) of refrigerant, are not subject to the
requirements of this prerequisite”.  

  
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	 	b.	 IEQp1 Minimum Air Quality Performance: All mechanical ventilation systems installed by Tenant must
“meet the minimum requirements of Sections 4 through 7 of ASHRAE Standard 62.1-2007, Ventilation for Acceptable Indoor Air Quality. Mechanical ventilation systems must be designed
using the ventilation rate procedure or the applicable local code, whichever is more stringent.” Compliance must be demonstrated through calculations performed in alignment with the Ventilation Rate Procedure methodology as per
section 6.2 of the ASHRAE 62.1-2007 standard. 

  

	 	c.	 IEQp2 Environmental Tobacco Smoke Control (ETS): Tenant is required to “Prohibit smoking in the
building. Prohibit on-property smoking within 25 feet (8 meters) of entries, outdoor air intakes and operable windows. Provide signage to allow smoking in designated areas, prohibit smoking in designated areas
or prohibit smoking on the entire property.”  

  

	 	(2)	 Mandatory Tenant Energy Conservation Measures (ECMs). Tenant shall adhere to the following
performance requirements to support and align with the Energy Conservation Measures incorporated in the base-building Core and Shell building systems and building envelope design and the LEED-CS whole building
energy model: 

  

	 	a.	 Lighting Power Density: The installed interior lighting power in the Premises must be designed to be
equal to or less than 0.75 Watts/SF using the Building Area Calculation Method as referenced in ASHRAE 90.1-2007. 

  

	 	b.	 Lighting Controls: Office tenants are required to provide the following
lighting controls: 

  

	 	•	 	 Daylight dimming: The Premises shall be designed to meet the following daylight dimming requirements:

  

	 	•	 	 Automatic daylight harvesting controls must be provided in all tenant spaces that are within 15 ft of the
exterior walls. 

  

	 	•	 	 All lighting in these areas must be automatically controlled based on available daylight and is dimmed from 100%
to 30% of the light output with a proportional power input reduction (from 100% to 30% of the power input). 

  

	 	•	 	 The light level setpoint shall be 50 fc at a horizontal plane that is 2.5 ft above the floor.

  

	 	•	 	 Occupancy Sensors on Lighting: Occupancy sensors must be provided for light control in all tenant spaces.

 Beyond adhering to the requirements of the above listed LEED-CS prerequisites and credits,
Tenant, at its option and at its own cost and expense, may elect to pursue third party certification under the LEED 2009 program for Commercial Interiors. Even if third-party certification is not pursued, Tenant shall be required to comply with the
aforementioned LEED prerequisites and credits. 
 9.11. Emergency Generator. 

(a) Subject to Landlord’s prior written approval of the design and specifications therefor (which approval shall not be unreasonably
withheld, conditioned or delayed), Tenant shall have the right, at its sole cost and expense (except to the extent to which the installation cost thereof is paid through the Landlord’s Allowance), to install, operate, repair, maintain and
replace a back-up generator reasonably necessary for Tenant’s requirements including natural gas or fuel supply and tank therefor reasonably necessary for Tenant’s requirements (not to exceed
applicable code requirements), and all reasonably necessary cabling and related appurtenances (collectively, the “Generator”) to serve the Premises at the location identified on Exhibit A attached hereto or in a location in
or around the Building or the Parking Facilities as otherwise agreed upon by the parties, if Tenant elects to install the Generator. 
 (b)
No Rent shall be charged to Tenant for the area to be occupied by the Generator and the areas required to connect the Generator to the appropriate locations within the Premises (but if the Generator occupies any parking spaces in the Parking
Facilities, such spaces shall reduce the required Parking Allotment by the number of such occupied spaces). Tenant will be solely responsible for all utility charges incurred with respect to the Generator, as separately metered (at Tenant’s
expense). 

  
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 (c) Except to the extent the Generator is installed as part of the Initial Tenant Work in
accordance with the provisions of the Work Letter, installation of the Generator and any related cabling, conduit and appurtenances will be governed by the applicable provisions of this Lease relating to Tenant Work. Tenant will submit to Landlord
at least thirty (30) days prior to the proposed installation date(s) Tenant’s proposed plans and specifications relating to the installation, operation and use of the Generator and all associated lines. Except to the extent the Generator
is installed as part of the Initial Tenant Work in accordance with the provisions of the Work Letter, Tenant may not commence any work to install a Generator until it has received Landlord’s prior written approval (not to be unreasonably
withheld, delayed or conditioned) of such plans and specifications. Tenant, at its sole cost and expense, shall comply with all applicable Legal Requirements and restrictive covenants affecting the Property and Landlord’s reasonable directives
relating to the installation, operation, maintenance and repair of the Generator, including, but not limited to (i) obtaining and maintaining (or causing to be obtained and maintained) and complying with the provisions of all applicable permits
required for the installation, operation, maintenance and repair of the Generator, (ii) implementing spill prevention control and countermeasures and containment plan(s) (as required by federal, state, or local regulations) or best management
practices plan(s), (iii) providing evidence of insurance covering such facilities, and (iv) maintaining and inspecting such facilities and related equipment and keeping records related thereto. Tenant will maintain and repair the Generator in
good operating condition throughout the Term, at Tenant’s sole cost and expense. Any replacement (excluding insured casualty), all maintenance and repair of the Generator and all governmental compliance required in connection with the Generator
will be Tenant’s sole responsibility and Tenant’s sole cost and expense; provided, however, if Tenant fails to commence such maintenance and repair within thirty (30) days (unless an emergency exists, in which event Tenant shall
promptly commence such curative work and thereafter diligently prosecute the same to completion) after written notice from Landlord and thereafter diligently prosecutes the same to completion, then Landlord may elect to perform such maintenance at
Tenant’s sole cost and expense. Upon Landlord’s request, Tenant will promptly provide Landlord with copies of all records relating to the installation, operation, maintenance and repair of the Generator. 

(d) Tenant may not use the Generator for any purpose other than solely in connection with Tenant’s occupancy of the Premises for the
Permitted Use and in accordance with any applicable permit(s) pertaining to the Generator. Tenant may not use the Generator to serve other occupant(s) of the Property. This provision does not modify Tenant’s permitted use of the Premises, and
does not relieve Tenant of any environmental liability under this Lease. 
 (e) At any time within ninety (90) days prior to the
expiration of the Lease, or earlier termination of the Lease, Landlord may, at Tenant’s cost and expense, cause a qualified environmental consultant reasonably acceptable to Landlord and Tenant to perform an environmental investigation to
determine whether a release of any Hazardous Materials has occurred during the Term of this Lease with respect to the Generator. Within thirty (30) days following the expiration or earlier termination of this Lease, Tenant may elect (but shall
not be required) to remove the Generator, but if Tenant elects to do so, Tenant shall promptly (i) remove the Generator (and any related fuel tanks, conduit, fuel lines, cabling and other appurtenances associated therewith), (ii) restore the
affected areas to their original condition prior to the installation of the Generator, in accordance with plans and specifications reasonably acceptable to Landlord and all applicable Legal Requirements, and (iii) repair any damage to the
Premises or the Property caused by the removal of the Generator. Tenant shall perform any required environmental remediation for the release of any Hazardous Materials in connection with the Generator caused by Tenant or any Tenant Party during the
Term of this Lease in accordance with applicable Legal Requirements, all at Tenant’s sole cost and expense. If the environmental investigation performed by the environmental consultant as provided above confirms the release of any Hazardous
Materials caused by Tenant or any Tenant Party in connection with the Generator, Tenant must thereafter perform any clean up or remediation required by applicable Legal Requirements and in accordance with applicable Legal Requirements, and document
with a report prepared by a qualified environmental consultant reasonably approved by Landlord, evidencing either no impact to soil and groundwater exceeding state cleanup criteria for the use of the site, or that any impacted soil or groundwater
has been remediated in a manner and to a level meeting the applicable state cleanup criteria, together with any applicable state assurance or closure. 

(f) Tenant will promptly report to Landlord any spill or release and any written citations or notices of violation of any Legal Requirements
received by Tenant in connection with the Generator, and will provide Landlord with copies thereof. Such notification to Landlord will not relieve Tenant from its obligations to notify governmental agencies. Any cleanup or remediation will be
completed by Tenant in accordance with applicable Environmental Laws and in a manner and to a level meeting the applicable state cleanup criteria, together with any applicable state assurance or closure. 

(g) Tenant shall make annual inspections, at Tenant’s expense, to ensure regulatory compliance and the proper operation, maintenance and
repair of the Generator, and will forward copies of such inspection reports to Landlord promptly following receipt of Landlord’s written request(s) therefor. 

  
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 9.12. Rooftop Rights. 

(a) Tenant shall be permitted, in locations on the roof of the West Wing of the Building as approved by Landlord in writing in advance, to
install, operate, maintain, repair and remove, or Landlord may install on behalf of Tenant, all at Tenant’s sole cost and expense and for use solely by Tenant in connection with its business operations conducted in the Premises and not for use
by non-occupant third parties, (i) telecommunications and data processing equipment (including but not limited to satellite dishes, generators, cell boosters and antennae), and related wiring from the
roof to the interior portions of the Premises to the extent reasonably necessary (collectively, the “Rooftop Communications Equipment”), and (ii) such supplementary HVAC and other equipment
serving solely the Premises, consistent with Tenant’s use of the Premises (collectively, with the Rooftop Communications Equipment, the “Rooftop Equipment”), provided the same complies with
all Legal Requirements. The Rooftop Equipment shall be screened from exterior view in a manner reasonably acceptable to Landlord. During the Term, Tenant shall not be required to pay any monthly rental or license fee with respect to Tenant’s
Rooftop Space or any of the Rooftop Equipment. Tenant shall be responsible for all costs and expenses associated with or relating to the Rooftop Equipment, including installation, operation, maintenance, use, removal and insuring of the Rooftop
Equipment (same being deemed Tenant’s personal property for purposes of this Lease), and shall reimburse Landlord any reasonable, actual out-of-pocket costs
incurred by Landlord in connection therewith, including, but not limited to any costs for electric power and HVAC (if any) that Tenant uses in the Building for the Rooftop Equipment, as separately metered. Landlord shall have the right to permit
other tenants of the Building to lease space on the roof of the Building for such other party’s own rooftop antennae, satellite dishes and other telecommunications equipment to be used in the conduct of such tenant’s business operations in
the Building and not elsewhere, provided that (i) Tenant shall continue to have full access to the Rooftop Equipment, (ii) Tenant’s right to install, use, improve, add to and replace Rooftop Equipment shall be non-exclusive and shall be shared on a pro rata 

  
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basis with any such rights granted to other tenant(s) in the Buildings, (iii) Landlord shall not install, and shall prohibit the installation and/or operation by any other party of, any
additional microwave dishes/earth satellite disks, antennae, towers and/or other structures on the Roof which would, in Tenant’s reasonable judgment, interfere with Tenant’s use of the Rooftop Equipment which is then in place. 

(b) Prior to installing any Rooftop Equipment, Tenant shall submit to Landlord for its approval (which approval shall not be unreasonably
withheld, delayed or conditioned) plans and specifications that (i) specify in detail the design, location, size (and, with respect to Rooftop Communications Equipment, the frequency) of the Rooftop Equipment and (ii) are sufficiently
detailed to allow for the installation of the Rooftop Equipment in a good and workmanlike manner and in accordance with all Legal Requirements. Following Landlord’s approval of such plans, Tenant shall obtain all permits required for the
installation and operation, thereof, and copies of all such permits must be submitted to Landlord before Tenant begins to install the Rooftop Equipment. Tenant shall be permitted to select a contractor of its choice to undertake the installation of
the Rooftop Equipment, subject to Landlord’s approval (which approval shall not be unreasonably withheld, delayed or conditioned). Tenant shall install all Rooftop Equipment in a good and workmanlike manner, and shall maintain and use the
Rooftop Equipment in accordance with all applicable Legal Requirements. Tenant shall also have the right to install reasonably necessary conduit and sleeving from the roof to the points of connection within the Premises. Tenant shall be responsible
for all costs of installation (including structural reinforcing or modifications required to be made to the roof in order to support Tenant’s Rooftop Equipment), repair, maintenance and removal with respect to the Rooftop Equipment. Tenant
shall thereafter maintain all permits necessary for the maintenance and operation of the Rooftop Equipment while it is on the Property. Tenant shall maintain the Rooftop Equipment in good repair and condition and in such a manner so as not to
interfere in any material respect with any other satellite, antennae or other transmission facility on the roof or elsewhere in the Building which was installed and operating prior to Tenant’s installation of the Rooftop Equipment which is
claimed to be causing such interference. Tenant shall repair any damage to the Building caused by or relating to the Rooftop Equipment, including that which is caused by its installation, maintenance, use or removal, and Tenant shall reimburse
Landlord for any out-of-pocket costs and expenses incurred by Landlord for any actual damage to the Property, including any damage resulting from penetrations of the
Roof with respect to such installation, maintenance or use. 
 (c) All work relating to the Rooftop Equipment shall, at Landlord’s
request, be coordinated with Landlord’s roofing contractor so as not to void any warranty for the Roof. 
 ARTICLE 10: CONDITION AND MAINTENANCE OF
PREMISES AND PROPERTY 
 10.01. Existing Conditions. Tenant acknowledges that except for any express representations contained in
this Lease, neither Landlord nor any person acting under or on behalf of Landlord has made any representation as to the condition of the Premises, the Building or the Property, or the suitability of the Premises, the Building or the Property for
Tenant’s intended use. Tenant represents and warrants that Tenant has made its own inspection and inquiry regarding the Premises, the Building and the Property and is not relying on any representations of Landlord or any broker or persons
acting on behalf of Landlord other than as set forth in this Lease. 
 10.02. No Landlord Liability. Landlord shall not be liable for
any damage or injury to the persons, property or business (including loss of revenue, profits or data) of Tenant or any Tenant Party, provided, however, that this Section 10.02 shall not exempt Landlord from
liability for Landlord’s negligence or willful misconduct or the negligence or willful misconduct of its agents, employees, contractors, and/or invitees, or Landlord’s breach of its obligations herein. This exemption shall apply whether
such damage or injury is caused by (among other things): (i) fire, steam, electricity, water, gas, air, sewage, sewer gas or odors, snow, ice, frost or rain; (ii) the breakage, leakage, obstruction or other defects of pipes, faucets,
sprinklers, wires, appliances, plumbing, windows, air conditioning or lighting fixtures or any other cause; (iii) explosion, electrical or electromagnetic emissions; (iv) any casualty or Taking; (v) theft; (vi) conditions in or about
the Property or the Building; or (vii) any act or omission of any other tenant. Tenant hereby agrees that, to the maximum extent permitted by law, all merchandise, furniture, fixtures and property of every kind, nature and description of Tenant
or any Tenant Party which may be in or upon the Premises, the Building or the Property, shall be at the sole risk and hazard of Tenant, and that if the whole or any part thereof shall be damaged, destroyed, stolen or removed from any cause or reason
whatsoever, no part of said damage or loss shall be charged to, or borne by, Landlord, except to the extent caused by Landlord’s negligence or willful misconduct or the negligence or willful misconduct of its agents, employees, contractors,
and/or invitees, or Landlord’s breach of its obligations herein. 

  
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 10.03. Landlord’s Repair and Maintenance Obligations. Subject to the provisions
of Section 16.09, and except for damage caused by fire, other casually or taking (which is dealt with below), and damage caused by the act or omission of Tenant or any Tenant Party, Landlord shall, at its sole cost and
expense and not to be reimbursed as Operating Expenses, keep the foundation, roof (including the roof membrane), walls, foundations, floor slabs and other structural elements of the Building (excluding any structural elements added to the Building
as part of the Initial Tenant Work or other Tenant Work, which shall be Tenant’s responsibility), columns and beams, and exterior walls and windows of the Building, as well as the underground and under-slab plumbing lines serving the Building,
in good order, condition and repair, reasonable wear and tear excepted. Further subject to the provisions of Section 16.09, and except for damage caused by fire, other casually or taking (which is dealt with below), and damage caused by the act
or omission of Tenant or any Tenant Party, Landlord shall keep the Building Systems (including the HVAC, plumbing, electrical, mechanical and other systems serving the Premises in common with other portions of the Building), to the extent not
serving the Premises or another tenant’s premises exclusively, and the common areas of the Building and the Property, in good order, condition and repair, reasonable wear and tear excepted. Landlord shall make any repairs or replacements to the
Building, the Premises or the Property, to the extent such repair or replacement was necessitated by Landlord’s negligence or willful misconduct or the negligence or willful misconduct of its agents, employees, contractors, and/or invitees or
Landlord’s breach of its obligations herein, at its sole cost and expense and not to be reimbursed as an Operating Expense. Landlord shall cause the common areas of the Building and the Property to be kept clean and free from rubbish and
debris, and the paved portions of the common areas of the Property to be free from appreciable accumulation of ice and snow. Except to the extent caused by Landlord’s negligence or willful misconduct or the negligence or willful misconduct of
its agents, employees, contractors, and/or invitees, or Landlord’s breach of its obligations herein, Landlord shall not be obligated to maintain, repair or replace any interior windows, doors, plate glass, or the surfaces of walls within the
Premises, or any fixtures, components or equipment located within the Premises or elsewhere which serve the Premises exclusively, all of which shall be Tenant’s obligation. Tenant shall promptly report to Landlord any defective condition known
to it that Landlord is required by the provisions of this Section to repair. Tenant waives the benefit of any present or future law that provides Tenant the right to repair the Premises or the Property at Landlord’s expense or to abate or
reduce the Rent or to terminate this Lease because of the condition of the Property or the Premises to the extent such benefit of law may be waived by Tenant; provided, however, that the foregoing waiver shall not be deemed to waive any
rights expressly granted to Tenant pursuant to the provisions of Section 6.03 of this Lease. Tenant shall not be entitled to any abatement of Rent, nor shall Landlord incur any liability, by reason of inconvenience,
annoyance or injury to Tenant arising from any repairs, alterations, additions, replacements or improvements made by Landlord, or any related work undertaken by Landlord in accordance with the provisions of this Lease provided Landlord complies with
the terms of Section 9.06 regarding access to the Premises and provided Landlord takes commercially reasonable steps to minimize any interference with Tenant’s operations. Notwithstanding the fact that Landlord may
provide security services at the Property or Building at any time during the term of this Lease, (i) Tenant hereby releases Landlord from any claim for injury to persons or damage to property asserted by Tenant or any Tenant Party that is
suffered or occurs in or about the Premises or in or about the Building or Property or the common areas appurtenant thereto by reason of the act of any intruder or any other person in or about the Premises, Building or Property, and
(ii) Landlord shall not be deemed to owe Tenant or any other person any duty or standard of care as a result of Landlord’s provision of such security services. All costs and expenses incurred by Landlord in connection with the performance
of any obligation set forth in this Section 10.03 shall be included in Operating Expenses except to the extent otherwise expressly provided above in this Section. 

Throughout the Term, Landlord shall maintain a bicycle storage area, comparable to the existing bicycle storage area in the Building for Tenant’s use (in
common with other occupants of the Building). 
 10.04. Tenant’s Obligations. 

10.04(a) Repair and Maintenance. Except for work that Section 10.03 requires Landlord to do and subject to
Section 16.09, Tenant, at its sole cost and expense: shall keep the Premises (including all Initial Tenant Work, other Tenant Work, Tenant Property, and all fixtures, systems and equipment now or hereafter on the Premises or elsewhere that
exclusively serve the Premises regardless of whether or not the same are part of a Building System), together with any interior windows, doors, interior plate glass, and the inner surfaces of walls within the Premises, in at least as good order,
condition and repair as they are in on the Delivery Date or may be thereafter put in during the Term, reasonable wear and tear, damage caused by fire, other casualty or taking (which is dealt with below) and damage caused by the negligence or
willful misconduct of Landlord, Landlord’s agents, employees, or contractors excepted; shall keep in a secure and sanitary condition all trash and rubbish temporarily stored at the Premises; and shall make all repairs and replacements and do
all other work necessary for the 

  
 32 

 
foregoing purposes, whether the same may be ordinary or extraordinary, foreseen or unforeseen. Without limitation, Tenant shall be responsible for the maintenance, repair and replacement of all
plumbing, heating, ventilating and air-conditioning systems and other mechanical systems (whether or not part of the Building Systems) wherever located that exclusively serve the Premises, and Tenant shall
secure, pay for, and keep in force contracts with appropriate and reputable service companies approved by Landlord (which approval shall not be unreasonably withheld, conditioned or delayed) providing for the regular maintenance of such systems to
the extent that such systems exclusively serve the Premises. All repairs and replacements required to be made by Tenant hereunder shall be equal in quality and class to the original work. No storage shall be permitted outside of the Premises except
as otherwise expressly provided in this Lease. Storage inside the Premises shall be provided in a manner not visible from outside the Premises. 

10.04(b) Landlord’s Right to Cure. If Tenant does not perform any of its obligations under
Section 10.04(a), Landlord upon twenty (20) days’ prior notice to Tenant (or in the case of an emergency, with notice provided as soon as reasonably practicable) may perform such maintenance, repair or replacement
on Tenant’s behalf, and Tenant shall reimburse Landlord, as Additional Rent, for all costs reasonably incurred, together with an Administrative Charge (as defined in Section 13.02(e)), immediately upon demand. 

10.05. Tenant Work 

10.05(a) General. “Tenant Work” shall mean all work, demolition, installations, improvements, additions and alterations
made by or on behalf of Tenant in or to the Premises or, when expressly permitted by Landlord in advance, on or to any other portion of the Property. Without limitation, Tenant Work includes any penetrations in the walls, partitions, ceilings or
floors and all attached carpeting, all signs visible from the exterior of the Premises, and all changes in the exterior appearance of the windows of the Premises (including shades, curtains and the like). All Tenant Work shall be subject to
Landlord’s prior written approval (which approval shall not be unreasonably withheld, conditioned, or delayed) and shall be arranged and paid for by Tenant, all as provided herein; provided that any interior non-structural Tenant Work (including any series of related Tenant Work projects) that (a) costs less than the “Tenant Work Threshold Amount” (which shall be $50,000 in each instance or series
of related projects, provided that from and after the point at which the aggregate cost of Tenant Work proposed by Tenant in any Lease Year exceeds $100,000, all Tenant Work proposed during such Lease Year shall be deemed to exceed the Tenant
Work Threshold Amount and shall require Landlord’s prior written approval), and (b) does not materially adversely affect any structural component of the Building, or any elevators, fire-safety, telecommunications, curtain wall, electrical,
heating, ventilation, plumbing or any other mechanical system of the Building (collectively, the “Building Systems”), (c) does not materially adversely affect any penetrations in or otherwise materially adversely affect any walls,
floors, roofs, or other structural elements of the Building, or the curtain wall, and (d) does not include any signs visible from the exterior of the Premises or any change in the exterior appearance of the windows in the Premises (including
shades, curtains and the like) shall not require Landlord’s prior approval if Tenant delivers the Construction Documents (as defined in Section 10.05(b)) for such work to Landlord at least five (5) Business
Days’ prior to commencing such work. Without limiting Landlord’s rights hereunder, Landlord shall not be deemed unreasonable for withholding its approval as to any Tenant Work which would require unusual expense to re-adapt the Premises or any portion thereof to normal office use or typical laboratory use upon the termination or expiration of this Lease. In any event, non-structural
cosmetic work such as painting, carpeting and wall coverings (“Cosmetic Work”) shall not require Landlord’s consent or be included in the calculation of the Tenant Work Threshold, and no prior notice to Landlord of such work is
required. Whether or not Landlord’s approval is required, Tenant shall neither propose nor effect any Tenant Work that in Landlord’s reasonable judgment (i) adversely affects any structural component of the Building,
(ii) materially affects any Building System, (iii) affects the exterior or the exterior appearance of the Building or common areas within or around the Building or other property than the Premises, (iv) includes the installation of
equipment that will have an unreasonable acoustic impact on other tenants of the Building when compared to similar equipment in first-class office and laboratory buildings, (v) diminishes the value of the Premises, the Building or the Property,
or (vi) requires any unusual expense to readapt the Premises for use by a future occupant for the Permitted Uses. Any disputes regarding the scope and estimated cost of the work necessary to readapt the Premises for the Permitted Uses shall be
resolved pursuant to Section 16.17. Prior to commencing any Tenant Work affecting air disbursement from ventilation systems serving the Premises, including the installation of Tenant’s exhaust systems, Tenant shall
provide Landlord with a third-party report from a consultant, and in a form, reasonably acceptable to Landlord, showing that such work will not adversely affect the ventilation systems of the Building (or of any other tenant in the Building) and
shall, upon completion of such work, provide Landlord with a certification reasonably satisfactory to Landlord from such consultant confirming that no such adverse effects have resulted from such work. Landlord shall have the right to require Tenant
to provide to Landlord from time to time while Tenant’s Work is being performed, periodic lien waivers in statutory form from Tenant’s Contractor and such subcontractors and suppliers as Landlord may designate from time to time.

  
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 10.05(b) Construction Documents. No Tenant Work, other than Cosmetic Work, shall be
effected except in accordance with complete, coordinated construction drawings and specifications (“Construction Documents”) prepared in accordance with Exhibit H attached hereto. Before commencing any Tenant Work requiring
Landlord’s approval hereunder, Tenant shall obtain Landlord’s prior written approval of the Construction Documents for such work, which approval shall not be unreasonably withheld, conditioned or delayed. Landlord shall be given a
reasonable opportunity to consult with Tenant and review plans for any work under this Lease requiring Landlord’s consent as they are being prepared. The Construction Documents shall be prepared by an architect (“Tenant’s
Architect”) registered in the Commonwealth of Massachusetts and experienced in the construction of tenant space improvements in comparable buildings in the area where the Premises are located and, if the value of such Tenant Work will equal
or exceed the Tenant Work Threshold Amount or will affect any Building System, the identity of Tenant’s Architect (and also engineers if such work will affect any Building System) shall be approved by Landlord in advance, such approval not to
be unreasonably withheld, conditioned or delayed. Tenant shall be solely responsible for the liabilities associated with and expenses of all architectural and engineering services relating to Tenant Work and for the adequacy, accuracy, and
completeness of the Construction Documents even if approved by Landlord (and even if Tenant’s Architect has been otherwise engaged by Landlord in connection with the Base Building Work or the Initial Tenant Work). Construction Documents shall
set forth in detail the requirements for construction of the Tenant Work and shall show all work necessary to complete the Tenant Work, including all cutting, fitting, and patching and all connections to the mechanical, electrical, and plumbing
systems and components of the Building. Submission of the Construction Documents to Landlord for approval shall be deemed a warranty by Tenant that all Tenant Work described in the Construction Documents (i) complies with all applicable Legal
Requirements, (ii) does not materially adversely affect any structural component of the Building, (iii) is compatible with and does not materially adversely affect the Building Systems, (iv) does not affect any property other than the
Premises, (v) conforms to floor loading limits specified by Landlord, and (vi) with respect to all materials, equipment and special designs, processes or products, does not infringe on any patent or other proprietary rights of others. The
Construction Documents shall comply with Landlord’s requirements for the uniform exterior appearance of the Building, including the use of Building standard window blinds and Building standard light fixtures (which Building standard items shall
be consistent with the first-class nature of the Building). Landlord’s approval of Construction Documents shall signify only Landlord’s consent to the Tenant Work shown and shall not result in any responsibility of Landlord concerning
compliance of the Tenant Work with any Legal Requirements, or coordination or compatibility with any component or system of the Building, or the feasibility of constructing the Tenant Work without damage or harm to the Building, all of which shall
be the sole responsibility of Tenant. Landlord hereby represents to Tenant that the Base Building Work performed prior to the date of this Lease complies in all material respects with all applicable Legal Requirements. 

If, as a result of any Tenant Work performed or proposed to be performed by Tenant, Landlord is or will be obligated to comply with any Legal
Requirement (including the Americans With Disabilities Act) which was not previously applicable to the Premises or the Building (or which was previously applicable in a different manner or to a different extent), and such compliance requires
Landlord to make any improvement or alteration to any portion of the Building or the Property, then (i) when Landlord makes such determination prior to the performance of such Tenant Work, as a condition to Landlord’s consent, Landlord
shall have the right to require Tenant to pay to Landlord prior to the performance of such Tenant Work, the entire cost of any improvement or alteration Landlord is obligated to complete by such Legal Requirement, or (ii) when Landlord makes
such determination after such Tenant Work has commenced (regardless of whether or not the same has been completed), Tenant shall pay to Landlord, as Additional Rent, within ten (10) days of demand therefor by Landlord, the entire cost of any
improvement or alteration Landlord is obligated to complete by reason of such Legal Requirement. 
 10.05(c) Performance. The identity
of any person or entity (including any employee or agent of Tenant) performing any Tenant Work (“Tenant Contractor”) requiring Landlord’s approval hereunder shall be subject to Landlord’s prior written approval, which
approval shall not be unreasonably withheld, conditioned or delayed. Once any Tenant Contractor has been approved, the same Tenant Contractor may thereafter be used by Tenant for the same type of work until Landlord notifies Tenant that such Tenant
Contractor is no longer approved. Tenant shall procure at Tenant’s expense all necessary permits and licenses (and shall provide copies thereof to Landlord) before undertaking any Tenant Work, but shall not

  
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take any plans for Tenant Work to any governmental authority for review or approval without Landlord’s prior written authorization in each instance (which prior authorization shall not be
unreasonably withheld, conditioned or delayed). Tenant shall perform (or shall cause Tenant’s Contractor to perform) all Tenant Work at Tenant’s risk, in compliance with the Rules and Regulations and all applicable Legal Requirements and
Insurance Requirements, and in a good and workmanlike manner, employing new materials of good quality and producing a result at least equal in quality to the other parts of the Premises. When any Tenant Work is in progress, Tenant shall cause to be
maintained insurance as described in the Tenant Work Insurance Schedule attached hereto as Exhibit I and such other insurance as may be reasonably required by Landlord covering any additional hazards due to such Tenant Work. If the cost of
any Tenant Work exceeds the Tenant Work Threshold Amount, Tenant shall provide to Landlord such bonds or other assurances of satisfactory completion and payment as Landlord may reasonably require, in each case for the benefit of Landlord. If the
Tenant Work in any instance requires Landlord’s approval hereunder, Tenant shall reimburse Landlord within thirty (30) days of demand, as Additional Rent, for its reasonable third-party out-of-pocket costs of reviewing the proposed Tenant Work and inspecting the performance of such work (as well as all costs imposed upon Landlord by any mortgagee which reviews and/or inspects the same).
During the performance of any Tenant Work, representatives of Tenant and Landlord shall meet periodically (not less frequently than monthly) to review and discuss the progress of the work and the schedule for the performance of the remaining work.

 Each Tenant Contractor shall do nothing to impair any guaranties or warranties applicable to any portion or component of the Building or
the Property, and shall take all steps reasonably necessary to avoid delaying or otherwise interfering with the work of any contractor of Landlord or of any other tenant. Each Tenant Contractor working on the roof of the Building shall coordinate
with Landlord’s roofing contractor, shall comply with its requirements and shall not violate existing roof warranties. Tenant shall indemnify and hold the Indemnitees harmless from any claim, loss or expense based upon injury to persons or
damage to property to the extent arising from the act or omission of Tenant’s Contractor or any subcontractor or supplier of any tier, while on or about the Premises or the Property, except to the extent caused by the negligence or willful
misconduct of Landlord or Landlord’s agents, employees, contractors, and/or invitees. 
 10.05(d) Payment. Tenant shall pay the
entire cost of all Tenant Work so that the Premises, including Tenant’s leasehold, shall always be free of liens for labor or materials; provided, however, that in the event that there is a dispute over whether payment is due and
payable, Tenant may withhold payment so long as it files and records a bond sufficient to discharge any potential lien arising from the dispute or other security acceptable to Landlord and its mortgagees in their reasonable discretion within ten
(10) Business Days after Tenant has notice (from any source) of such dispute. If any such lien is filed that is claimed to be attributable to Tenant or persons acting under Tenant, then Tenant shall promptly (and always within ten
(10) Business Days) discharge the same by payment or filing any necessary bond. In the event that Tenant fails to discharge such lien within the time period set forth above, Landlord shall have the right, but not the obligation, to bond over or
otherwise discharge such lien as further set forth in Section 13.02 of this Lease; provided, however, that no notice or cure period shall apply. In such case Tenant shall pay Landlord’s reasonable costs of
discharging such lien within ten (10) Business Days of demand as Additional Rent. 
 10.05(e) Other. Tenant must schedule and
coordinate all aspects of work with the Building manager or other person or persons designated from time to time by Landlord, and shall make prior arrangements for elevator or temporary hoist use. Landlord shall provide Tenant and all other tenants
requiring the use of freight elevators and temporary hoists with joint access and the parties shall use reasonable efforts to coordinate such joint access to avoid conflicts. If an operating engineer is required by any union regulations, Tenant
shall pay for such engineer. If shutdown of risers and mains for electrical, mechanical or plumbing work is required, such work shall be supervised by Landlord’s representative at Tenant’s cost. If special security arrangements must be
made (e.g., in connection with work outside Normal Business Hours), Tenant shall pay the actual cost of such security. No work shall be performed in Building mechanical or electrical equipment rooms without Landlord’s approval, which approval
shall not be unreasonably withheld, conditioned or delayed, and all such work shall be performed under Landlord’s supervision. Except in case of emergency, at least five (5) days’ prior notice must be given to the Building manager
prior to the proposed shutdown of fire, sprinkler or other alarm systems, and in case of emergency, prompt notice shall be given. In the event that such work unintentionally alerts the Fire or Police Department or any private alarm monitoring
company through an alarm signal, Tenant shall be liable for any fees or charges levied by the Fire or Police Department or any private alarm monitoring company in connection with such alarm except to the extent such alert was caused by Landlord or
Landlord’s agents, employees, invitees or contractors. All demolition, installations, removals or other work that is reasonably likely to inconvenience other tenants of the Property or disturb Property operations must be scheduled with the
Building manager at least five (5) days in advance. 

  
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 Any requirements of any Tenant Contractor for services from Landlord or Landlord’s
Contractor, such as hoisting, electrical or mechanical needs, shall be paid for within thirty (30) days of billing after such costs are incurred, and arranged between such Tenant Contractor and Landlord or Landlord’s contractor. Tenant
shall cause each Tenant Contractor performing work on the Premises to clean up regularly and remove its debris from the Premises and Property. If any Tenant Contractor fails so to clean up, then Landlord may, after giving Tenant at least twenty-four
(24) hours’ prior written notice, cause its contractor to clean up and remove debris, and Tenant shall pay the reasonable out-of-pocket costs of such cleanup
and removal upon demand. 
 Each Tenant Contractor shall take all reasonable steps to assure that any work is carried out without disruption
from labor disputes arising from whatever cause, including disputes concerning union jurisdiction and the affiliation of workers employed by said Tenant Contractor or its subcontractors. Tenant shall be responsible for, and shall reimburse Landlord,
as Additional Rent, for, all actual costs and expenses, including reasonable attorneys’ fees and costs incurred by Landlord in connection with the breach by any Tenant Contractor of such obligations. If Tenant does not promptly resolve any
labor dispute caused by or relating to any Tenant Contractor, Landlord may in its sole discretion request that Tenant remove such Tenant Contractor from the Property, and if such Tenant Contractor is not promptly removed, Landlord may prohibit such
Tenant Contractor from entering the Property. 
 Upon completion of any Tenant Work and as a condition of such completion, Tenant shall give
to Landlord (i) a permanent certificate of occupancy (if one is legally required), and any other final governmental approvals required for such work, (ii) copies of “as built” plans (other than for Cosmetic Work) and all
construction contracts, and (iii) proof of payment for all labor and materials in the form of a final statutory lien waiver from Tenant’s Contractor or such other reasonable evidence as Landlord may require. 

10.05(f) Removal at Conclusion of Term. Except as set forth in the last sentence of this paragraph below, any Tenant Work that is
permanently affixed to the Premises or affixed in a manner so that it cannot be removed without causing other than incidental and repairable damage to the Premises shall become property of the Landlord at the termination of occupancy as provided
herein. If Landlord so notifies Tenant in writing at the time Landlord approves plans for any Tenant Work (or, if Landlord’s consent to the plans is not required, at the time Landlord receives notice of such work), Tenant shall remove such or
all Tenant Work as so specified prior to the conclusion of the Term. Tenant Work that may be removed with only incidental and/or repairable damage, may be removed by Tenant in any case provided such disturbance or damage is restored and repaired so
that the Premises are left in a clean and fully functional condition at least as good as they were in at the commencement of the Term or as they may be put in thereafter, reasonable wear and tear, damage caused by fire, other casualty or taking, and
damage caused by the negligence or willful misconduct of Landlord, Landlord’s agents, employees, or contractors excepted. 
 10.05(g)
Initial Tenant Work. The provisions of this Section 10.05 shall not apply to Initial Tenant Work except to the extent otherwise expressly provided in the Work Letter. 

10.06. Condition upon Termination. At the expiration or earlier termination of the Term, Tenant (and all persons claiming by, through or
under Tenant) shall without the necessity of notice deliver the Premises (including all Initial Tenant Work, none of which shall be removed by Tenant, and all other Tenant Work to the extent provided in Section 10.05(f) of
this Lease) broom-clean, in compliance with the requirements of Section 10.07 and in good order, repair and condition, excepting only damage caused by fire, other casualty, or taking, reasonable wear and tear, and damage
caused by the negligence or willful misconduct of Landlord, Landlord’s agents, employees, or contractors. The Premises shall be surrendered to Landlord free and clear of any mechanic’s liens (or any similar lien related to labor or
materials) or other lien or encumbrance (excluding liens or encumbrances existing as of the date hereof and liens or encumbrances granted by Landlord or related to work performed by or for Landlord) against any part of the Premises, equipment and/or
any Initial Tenant Work or any other Tenant Work to be surrendered with the Premises. As part of such delivery, Tenant shall also provide all keys (or lock combinations, codes, access cards or electronic passes) to the Premises to Landlord; remove
all signs wherever located; and, except as set forth in Section 10.05(f), remove all Tenant’s Property and other personal property whether or not bolted or otherwise attached. As used herein, “Tenant’s
Property” shall mean all trade fixtures, furnishings, equipment, inventory, cabling of any type, and other personal property owned by Tenant or any person acting under Tenant at the Premises. Tenant shall repair all damage that results from
such removal and restore the Premises substantially to a fully functional and tenantable condition (including the filling of all floor and wall holes, the removal of all disconnected wiring back to junction boxes and the replacement of all damaged
ceiling tiles). Any property not so removed shall be deemed abandoned, shall at once become the property of Landlord, and may be disposed of in such manner as Landlord shall see fit; and Tenant shall pay the reasonable cost of removal and disposal
to Landlord upon demand. The provisions of this Section shall survive the expiration or earlier termination of the Term. 

  
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 10.07. Decommissioning of the Premises. Prior to the expiration of this Lease (or
within thirty (30) days after any earlier termination), Tenant shall clean and otherwise decommission all interior surfaces (including floors, walls, ceilings, and counters), piping, supply lines, waste lines, tanks, and plumbing in or serving
the Premises, and all exhaust or other ductwork in or serving the Premises, in each case that has carried, released or otherwise been exposed to any Hazardous Materials, and shall otherwise clean the Premises so as to permit the report hereinafter
called for by this Section 10.07 to be issued. Prior to the expiration of this Lease (or within thirty (30) days after any earlier termination), Tenant, at Tenant’s expense, shall obtain and provide to Landlord a
report addressed to Landlord and Landlord’s designees prepared by a reputable licensed environmental engineer or certified industrial hygienist that is designated by Tenant and acceptable to Landlord in Landlord’s reasonable discretion,
which report shall be based on such person’s inspection of the Premises (including visual inspection, airborne and surface monitoring, and, if Tenant or any Tenant Party at any time stored or used any radioactive materials in the Premises,
Geiger counter evaluation), and shall show: 
 (i) that the Hazardous Materials brought onto the Premises by or for the use
by Tenant or any Tenant Party, if any, existing prior to such decommissioning, have been removed as necessary so that the interior surfaces of the Premises (including floors, walls, ceilings, and counters), piping, supply lines, waste lines, tanks,
and plumbing, and all such exhaust or other ductwork in and/or serving the Premises, may be reused by a subsequent tenant or disposed of in compliance with applicable Environmental Laws without taking any special precautions for Hazardous Materials,
without incurring special costs or undertaking special procedures for demolition, disposal, investigation, assessment, cleaning or removal of Hazardous Materials, and without incurring regulatory compliance requirements or giving notice in
connection with Hazardous Materials; 
 (ii) if Tenant or any Tenant Party at any time stored or used any radioactive
materials in the Premises, that the Premises (and all piping, supply lines, waste lines, tanks, and plumbing, and all exhaust or other ductwork in and/or serving the Premises), have been decommissioned in accordance with the regulations of the U.S.
Nuclear Regulatory Commission and/or the Massachusetts Department of Public Health for the control of radiation, and have accordingly been released for unrestricted use by the Radiation Control Program of the Massachusetts Department of Public
Health for the control of radiation; and 
 (iii) that the Premises may be reoccupied for office or laboratory use,
demolished or renovated without taking any special precautions for Hazardous Materials, without incurring special costs or undertaking special procedures for disposal, investigation, assessment, cleaning or removal of Hazardous Materials, and
without incurring regulatory requirements or giving notice in connection with Hazardous Materials. 
 For purposes of the preceding clauses (i) and
(iii) “special costs” or “special procedures” shall mean costs or procedures, as the case may be, that would not be incurred but for the nature of the Hazardous Materials introduced to the Premises by or for the use by Tenant or
any Tenant Party, as Hazardous Materials instead of non-Hazardous Materials. The report shall include reasonable detail concerning the clean-up locations, the tests run
and the analytic results. 
 In addition, Tenant shall provide to Landlord prior to the expiration of the Term (or within thirty
(30) days after any earlier termination), a copy of its most current chemical waste removal manifest and a certification from Tenant executed by an officer of Tenant that no Hazardous Materials or other potentially dangerous or harmful
chemicals brought onto the Premises by Tenant or any Tenant Party from and after the date that Tenant first took occupancy of the Premises remain in the Premises. 

If Tenant fails to perform its obligations under this Section 10.07, then without limiting any other right or
remedy, Landlord may, on five (5) Business Days’ prior written notice to Tenant, perform such obligations at Tenant’s expense, and Tenant shall within ten (10) days of demand reimburse Landlord, as Additional Rent, for all
reasonable out-of-pocket costs and expenses incurred by Landlord in connection with such work, together with an Administrative Charge, as defined in
Section 13.02. In addition, at Landlord’s election, Landlord may inspect the Premises and/or the Property for Hazardous Materials at Landlord’s cost and expense within sixty (60) days of Tenant’s
surrender of the Premises at the expiration or earlier termination of this Lease. Tenant shall pay for all such costs and expenses incurred by Landlord in connection with such inspection if such inspection reveals that a release or threat of release
of Hazardous Materials exists (a) at the Property as a result of the acts or omission of Tenant, its officers, employees, contractors, and agents, or (b) at the Premises (except to the extent resulting from the acts or omissions of
Landlord or Landlord’s agents, employees or contractors, or occupants of other portions of the Building). 
 The provisions of this
Section 10.07 shall survive the expiration of the Term or the earlier termination of this Lease. 

  
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 ARTICLE 11: DAMAGE OR DESTRUCTION; CONDEMNATION 

11.01. Damage or Destruction of Premises. If the Premises or the Building are damaged in whole or in part by any fire or other casualty
(a “casualty”), Tenant shall immediately give notice thereof to Landlord. Unless this Lease is terminated as provided herein, Landlord, at its own expense (but only to the extent of the insurance proceeds (net of all costs and expenses
incurred in obtaining same) received by Landlord on account thereof), except for any insurance deductibles (which shall be deemed Operating Costs), shall proceed with diligence to repair or cause to be repaired such damage so as to restore the
Premises (including the Initial Tenant Work but excluding any other Tenant Work) to substantially the same condition they were in prior to the casualty, subject to then applicable Legal Requirements. All such repairs made necessary by any act or
omission of Tenant shall be made by Landlord at Tenant’s expense to the extent that the cost of such repairs is not covered by insurance proceeds available therefor (including the payment by Tenant of any applicable deductible amount). Landlord
shall not be liable for delays in the making of any such repairs that are due to government regulation, casualties, strikes, unavailability of labor and materials, delays in obtaining insurance proceeds (provided Landlord files insurance claims with
reasonable diligence), and other causes beyond the reasonable control of Landlord, nor shall Landlord be liable for any inconvenience or annoyance to Tenant or injury to the business of Tenant resulting from delays in repairing such damage. All
repairs to and replacements of Tenant Property and any Tenant Work other than the Initial Tenant Work shall be made by and at the expense of Tenant, which work Tenant shall promptly commence as soon as practicable and thereafter prosecute diligently
to completion. 
 Landlord shall, within sixty (60) days after the occurrence of a casualty, provide Tenant with a good faith estimate
of the time required to repair the damage to the Premises or the Building, as provided herein; if such estimate is for a period of more than two hundred seventy (270) days from the occurrence of the casualty (or during the last twenty-four
(24) months of the Term, for a period of more than ninety (90) days), the Premises shall be deemed “substantially damaged”. If the Premises or the Building are substantially damaged, or if any mortgagee refuses to make available
to Landlord for the purpose of making such repairs a sufficient amount of the insurance proceeds, then in either such case Landlord may elect to terminate this Lease by giving Tenant written notice of such termination within one hundred twenty
(120) days of the date of such casualty. In addition, if the Premises or the Building are substantially damaged through no fault of Tenant or Tenant’s employees, contractors, invitees or agents, then Tenant may terminate this Lease by
giving Landlord written notice of such termination within one hundred twenty (120) days of the date of such casualty. 
 If the
Premises or any part thereof shall have been rendered unfit for use and occupation hereunder by reason of such damage, the Base Rent, or a just and proportionate part thereof, according to the nature and extent to which the Premises shall have been
so rendered unfit, shall be abated from and after the date of such casualty until the Premises (except as to Tenant Property and any Tenant Work other than the Initial Tenant Work) shall have been restored as nearly as practicable to the condition
in which they were immediately prior to such fire or other casualty. Notwithstanding the foregoing, if such casualty was due to the act or omission of Tenant or Tenant’s employees, contractors, invitees or agents, such abatement or reduction
shall be made only if and to the extent of any proceeds of rental interruption insurance actually received by Landlord and allocated to the Premises. 

In the event of any termination, the Term shall expire as though such effective termination date were the date originally stipulated in
Article 1 for the end of the Term and the Base Rent (to the extent not abated as set forth above) and Additional Rent for Operating Costs shall be apportioned as of such date. 

11.02. Eminent Domain. In the event of any condemnation or taking in any manner for public or quasi-public use, which shall be deemed
to include a voluntary conveyance in lieu of a taking (a “taking”) of the whole of the Building, this Lease shall forthwith terminate as of the date when Tenant is required to vacate the Premises. In such event Base Rent and Tenant’s
share of Operating Costs shall be apportioned as of the date of termination. Landlord shall promptly notify Tenant of any written notice received by Landlord from any governmental authority with respect to any condemnation or taking (including said
voluntary conveyance) of the Property or any part thereof. 
 In the event that only a part of the Premises or the Building shall be taken,
then, if such taking is a substantial taking (as hereinafter defined), either Landlord or Tenant may, by delivery of notice in writing to the other within sixty (60) days following the date on which Landlord’s title has been divested by
such authority, terminate this Lease, effective as of the date when Tenant is required to vacate the portion of the Premises so taken. A “substantial taking” shall mean a taking which: requires restoration and repair of the remaining
portion of the Building that cannot in the ordinary course be reasonably expected to be repaired within one hundred eighty (180) days; results in the loss of all reasonable access to the Premises; results in the loss of more than twenty-five
percent (25%) of the rentable floor area of the Premises; or results in the loss of more than ten (10%) percent of the number of parking spaces currently serving the Building and Landlord reasonably determines it is not practical to relocate such
parking within the remaining Property or on other property within the vicinity of the Property. 

  
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 Unless this Lease is terminated as provided herein, Landlord, at its own expense (but only
to the extent of the condemnation proceeds (net of all costs and expenses incurred in obtaining same) received by Landlord on account thereof), shall proceed with diligence to restore the remaining portion of the Premises (including the Initial
Tenant Work) and the necessary portions of the Building as nearly as practicable to the same condition as it was prior to such taking, subject to then applicable Legal Requirements. Landlord shall not be liable for delays in the performance of such
restoration that are due to government regulation, casualties, strikes, unavailability of labor and materials, delays in payment of condemnation proceeds, and other causes beyond the reasonable control of Landlord, nor shall Landlord be liable for
any inconvenience or annoyance to Tenant or injury to the business of Tenant resulting from delays in repairing such damage. All repairs to and replacements of Tenant Property and any Tenant Work other than the Initial Tenant Work shall be made by
and at the expense of Tenant, which work Tenant shall promptly commence as soon as practicable and thereafter prosecute diligently to completion. 

In the event some portion of the rentable floor area of the Premises is taken (other than for temporary use) and this Lease is not terminated,
Base Rent and Tenant’s share of Operating Costs shall be proportionally abated for the remainder of the Term. In the event of any taking of the Premises or any part thereof for temporary use, (i) this Lease shall be and remain unaffected
thereby and Rent shall not abate, and (ii) Tenant shall be entitled to receive for itself such portion or portions of any award made for such use with respect to the period of the taking that is within the Term (and the remainder of such award
shall be paid to Landlord), provided that if such taking shall remain in force at the expiration or earlier termination of this Lease, then Tenant shall pay to Landlord a sum equal to the reasonable cost of performing Tenant’s obligations
hereunder with respect to surrender of the Premises and upon such payment shall be excused from such obligations. 
 Landlord shall have and
hereby reserves and excepts, and Tenant hereby grants and assigns to Landlord, all rights to recover for damages to the Premises, the Building or the Property. Tenant agrees to execute such further instruments of assignment as may be reasonably
requested by Landlord, and to turn over to Landlord any damages that may be recovered in any proceeding or otherwise; and Tenant irrevocably appoints Landlord as its
attorney-in-fact with full power of substitution so to execute and deliver in Tenant’s name, place and stead all such further instruments if Tenant shall fail to do
so after ten (10) days’ notice. Nothing contained herein shall be construed to prevent Tenant from prosecuting in any condemnation proceedings a separate claim for the value of any of Tenant’s leasehold interest and improvements,
Tenant’s personal property, and for relocation and moving expenses and business losses, provided that such action shall not affect the amount of compensation otherwise recoverable by Landlord from the taking authority. 

ARTICLE 12: ASSIGNMENT AND SUBLETTING 

12.01. Landlord’s Consent Required. Except (i) for Related Party Transfers, and (ii) as set forth in this Article, Tenant
shall not directly or indirectly assign this Lease, or sublet or license the Premises or any portion thereof, or advertise the Premises for assignment or subletting, or permit the occupancy of all or any portion of the Premises or the use of any
portion of the Initial Tenant Work by any person other than Tenant, including transfer by mortgage, pledge or other encumbrance (whether of all or any portion of Tenant’s interest under this Lease, or any ownership interest (direct or indirect)
in Tenant, or any portion of the Initial Tenant Work or any equipment, machinery, trade fixture or other property paid for in whole or in part by any portion of Landlord’s Allowance) each of the foregoing actions are collectively referred to as
a “Transfer”), nor advertise the availability of or market the Premises for a Transfer in whole or in part, without obtaining, on each occasion, the prior written consent of Landlord, which consent shall not be unreasonably
withheld, conditioned or delayed, provided that Tenant complies with the provisions of this Article. An assignee, subtenant, licensee, or other occupant is referred to herein as a “Transferee”. It shall be reasonable for Landlord to
withhold consent to a proposed Transfer (other than a Related Party Transfer) if the proposed Transferee does not have a net worth equal to or in excess of that of Tenant at the Date of Lease or immediately prior to the proposed Transfer, whichever
is greater, or if the use proposed to be made of the Premises (or the applicable portion thereof) by the proposed Transferee is not a Permitted Use hereunder. A “Transfer” shall include any transfer of Tenant’s interest in this Lease
by operation of law, the transfer or sale of a controlling interest in Tenant (whether direct or indirect, and whether in one transaction or in a series of related transactions), any “Related Party Transfer” (as defined below), and the
grant of permission or license by Tenant to any other person or entity to use or occupy any portion of the Premises for any period of time or for any purpose whatsoever. Any Transfer shall be subject to this Lease, all of the provisions of which
shall be conditions to such Transfer and be binding on any Transferee. No Transferee shall have any right further to Transfer its interest in the Premises, and nothing herein shall impose any obligation on Landlord with respect to a further
Transfer. For purposes of this Lease, the term “Transfer” shall not include any mortgage, pledge or other encumbrance on or of any equipment, machinery, trade fixture or other property owned or used by Tenant which is not paid for in whole
or in part by any portion of Landlord’s Allowance. 

  
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 12.02. Terms. Tenant shall not offer to make a Transfer (i) to any tenant in the
Building (or any Affiliate of such tenant) if, at the time of Tenant’s intended Transfer, Landlord then has comparable space in the Building available for lease for a comparable term, or (ii) to any person or entity that would be of such
type, character or condition as to be inappropriate as a tenant of a building comparable to the Building. The provisions of this Section 12.02 shall not apply to Related Party Transfers. 

12.03. Related Party Transfers . Tenant may make a Related Party Transfer (as defined below) without the consent of Landlord provided
that Tenant gives Landlord at least ten (10) days’ prior written notice thereof together with evidence reasonably satisfactory to Landlord that the proposed Transfer is a Related Party Transfer and such Related Party Transfer is subject to
all of the other terms and conditions of this Article. A “Related Party Transfer” shall mean one or more of the following: (1) any assignment to (A) a parent which owns (either directly or indirectly) substantially all of
the voting stock of Tenant or otherwise exercises voting control over Tenant, or (B) a subsidiary of Tenant in which Tenant owns (directly or indirectly) substantially all of the voting stock or over which Tenant otherwise exercises voting
control, (C) any subsidiary of Tenant’s parent in which such parent owns (directly or indirectly) substantially all of the voting stock or over which such parent otherwise exercises voting control, or (D) any other Affiliate of
Tenant, or (2) an assignment incident to the sale of all or substantially all of Tenant’s assets, or (3) a statutory merger or consolidation of Tenant with any other entity, provided that in any of the situations described in the
preceding clauses (1)-(3), (a) the person or entity succeeding to Tenant’s interest immediately thereafter (the “Related Party Transferee”) has a net worth equal to or in excess of that of Tenant at the Date of Lease or
immediately prior to the Related Party Transfer, whichever is greater, and (b) such Related Party Transferee agrees in writing, for the benefit of Landlord, to assume all of Tenant’s obligations under this Lease. Related Party Transfers
shall not be subject to the provisions of (i) Section 12.02, (ii) the first sentence of Section 12.04, or (iii) Section 12.05. 

12.04. Procedures. At least thirty (30) days prior to the effective date of any Transfer, Tenant shall give Landlord in writing the
details of the proposed Transfer, including: (i) the name, business, and financial condition (including the most recent annual and quarterly financial statements, in form and content reasonably acceptable to Landlord) of the prospective
Transferee, (ii) a true and complete copy of the proposed instrument containing all of the terms and conditions of such Transfer, (iii) a written agreement of the prospective Transferee, in form and content reasonably acceptable to
Landlord, agreeing with Landlord to perform and observe all of the terms, covenants, and conditions of this Lease undertaken by such Transferee, and (iv) any other information Landlord reasonably requires. Tenant shall pay to Landlord, as
Additional Rent, Landlord’s reasonable attorneys’ fees in reviewing any Transfer. Tenant shall provide Landlord with a true and correct copy of the instrument effecting the Transfer on or before the date that it takes effect, except that
with respect to a Related Party Tenant Transfer, Tenant shall, within fifteen (15) days after the Related Party Transfer, deliver to Landlord evidence of merger or such other evidence as is reasonably satisfactory to Landlord that such Related
Party Transfer has occurred. 
 12.05. Excess Rents. If the consideration, rent, or other amounts payable to Tenant under any
sublease, license, or other occupancy arrangement (collectively, a “Sublease”) or any assignment exceed the sum of (1) Rent and other charges to be paid hereunder (which amounts, in the case of a Sublease, shall be pro-rated based on the floor area intended to be subject to such Sublease), and (2) Tenant’s Expenses (which shall be (a) in the case of an assignment, amortized over the remaining Term of the Lease,
and (b) in the case of a Sublease, (i) pro-rated based on the floor area intended to be subject to such Sublease, and (ii) amortized over the fixed term of the Sublease in question), then Tenant
shall pay to Landlord, as Additional Rent, one-half (1/2) of the amount of such excess when and as received by Tenant. “Tenant’s Expenses” shall mean, collectively, (i) the necessary
and reasonable expenses incurred by Tenant in good faith to third parties in connection with such an assignment or Sublease (as the case may be) on account of brokerage, legal, design, and demising and leasehold improvement costs in the portion of
the Premises affected by, and specifically in connection with, such assignment or Sublease, and (iii) the unamortized out of pocket cost to Tenant of previously constructing Tenant Work in the Premises (or, in the case of a Sublease, in the
portion of the Premises to be subject to such Sublease) and in either case with respect to the Initial Tenant Work, only the portion of the cost thereof paid out of pocket by Tenant, and not the portion of the cost thereof covered by Landlord’s
Allowance pursuant to the Work Letter, shall be included as an “out of pocket cost to Tenant” for purposes of this calculation, with such amortization to be calculated on a straight line basis over the remaining Initial Term of the Lease
as of the date such expense was incurred by Tenant. There shall be included in the calculation to be performed pursuant to the first sentence of this section any lump-sum payment or periodic payments made to
Tenant for the purchase of so-called leasehold improvements, but all lump-sum or periodic payments made to Tenant on account of the leasing or mere use of Tenant’s
equipment by the Transferee under such Sublease or assignment shall be excluded from such calculation. The provisions of this Section 12.05 shall not apply to Related Party Transfers.

  
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 12.06. No Release. Notwithstanding any Transfer and whether or not the same is a
Related Party Transfer or is consented to, the liability of Tenant to Landlord shall remain direct and primary, to the extent that Tenant still exists as a separate entity after a Related Party Transfer. Any Transferee of all or substantially all of
Tenant’s interest in the Premises, including any such Transferee under a Related Party Transfer, shall be jointly and severally liable with Tenant (to the extent that Tenant still exists as a separate entity after a Related Party Transfer) to
Landlord for the performance of all of Tenant’s covenants under this Lease; and such Transferee shall upon written request from Landlord execute and deliver such instruments as Landlord reasonably requests in confirmation thereof (and agrees
that its failure to do so shall be a default). During any period when there exists an Event of Default by Tenant which is then continuing, Tenant hereby irrevocably authorizes Landlord to collect Rent and other charges from any Transferee (and upon
notice from Landlord any Transferee shall pay directly to Landlord) and apply the net amount collected to the Rent and other charges reserved under this Lease. No Transfer shall be deemed a waiver of the provisions of this Section, or the acceptance
of the Transferee as a tenant, or a release of Tenant from direct and primary liability for the performance of all of the covenants of this Lease. The consent by Landlord to any Transfer shall not relieve Tenant or any Transferee from the obligation
of obtaining the express consent of Landlord to any modification of such Transfer or a further Transfer by Tenant or such Transferee. Notwithstanding anything to the contrary in the documents effecting the Transfer, Landlord’s consent shall not
alter in any manner whatsoever the terms of this Lease, to which any Transfer at all times shall be subject and subordinate. The breach by Tenant or any Transferee of any provision of this Article shall be a default for which there is no cure
period. 
 ARTICLE 13: EVENTS OF DEFAULT AND REMEDIES 

13.01. Events of Default. In the event that: 
  

	 	(A)	 Tenant shall default in the payment of any Base Rent, Additional Rent or other sum payable under this Lease,
when and as the same shall become due and payable hereunder, and such default shall continue for a period of five (5) days after Landlord gives Tenant notice that such payment was not paid when due; provided, however, that after Landlord
has given two (2) notices to Tenant of a failure to timely pay a recurring monthly charge (such as Basic Rent, Operating Costs or utility charges, regardless of whether the amount of such charge may vary from month to month), then for a period
of twelve (12) months from the date of such notice Tenant shall not be entitled to any notice of a further default in the payment of any recurring monthly charge (whether of the same or a different monetary obligation of Tenant hereunder) and
Tenant’s failure at any time during such 12-month period to make any such payment within five (5) days after the date on which such payment is due hereunder shall constitute an Event of Default
without the necessity of any notice; or 

  

	 	(B)	 Tenant shall (i) abandon or vacate for not less than three (3) consecutive months all or
substantially all of the Premises, or (ii) make any Transfer in violation of this Lease; or (iii) fail to (a) maintain all insurance as required hereunder, or (b) provide Landlord with the certificates of insurance required
pursuant to Article 7 above, or (c) restore or replenish the amount of the Security Deposit following a draw by Landlord upon the Security Deposit, as required by Article 14 below, or (d) provide Landlord with an estoppel
certificate as required by Section 15.04 below; or 

  

	 	(C)	 Tenant shall file a voluntary petition in bankruptcy or shall be adjudicated a bankrupt or insolvent; or shall
file any petition or answer seeking any reorganization, arrangement, composition, liquidation, dissolution or similar relief under any present or future federal, state or other statute, law or regulation relating to bankruptcy, insolvency or other
relief for debtors; or shall seek, or consent to, or acquiesce in the appointment of any trustee, receiver or liquidator of Tenant; or shall make any general assignment for the benefit of creditors; or 

 

	 	(D)	 any court enters an order, judgment or decree approving a petition filed against Tenant seeking any
reorganization, arrangement, composition, liquidation, dissolution or similar relief under any present or future federal, state or other statute, law or regulation relating to bankruptcy, insolvency or other relief for debtors, or for the
appointment of a receiver, and such order, judgment or decree shall remain unvacated or unstayed for an aggregate of ninety (90) days; or 

  

	 	(E)	 any representation or warranty made by Tenant herein is untrue in any material respect when made; or

  
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	 	(F)	 Tenant shall default in the observance or performance of any of Tenant’s covenants, agreements or
obligations hereunder, other than those referred to in the foregoing clauses (A)-(E), and such default shall not be corrected within the cure period expressly provided in this Lease therefor (and if no cure period is expressly provided, then for
thirty (30) days after notice is given, provided, however that such period shall be reasonably extended in the case of a non-monetary default that cannot be cured within such 30-day period through the use of diligent efforts but only if the default can be cured and Tenant begins such cure within such 30-day period and thereafter diligently
prosecutes such sure continuously to completion); 

 then, and in any such case, Landlord and its agents lawfully may, in addition to any
remedies for any preceding breach, immediately or at any time thereafter without demand or notice and with or without process of law, enter upon any part of the Premises in the name of the whole or mail or deliver a notice of termination of the Term
of this Lease addressed to Tenant at the Premises or any other address herein, and thereby terminate the Term and repossess the Premises as of Landlord’s former estate. Any default by Tenant continuing beyond applicable notice and cure periods
by is referred to herein as an “Event of Default”. Tenant waives any statutory notice to quit and equitable rights in the nature of further cure or redemption, and Tenant agrees that upon Landlord’s termination of this Lease,
Landlord shall be entitled to re-entry and possession in accordance with the terms hereof. Tenant agrees that a notice by Landlord alleging any default shall, at Landlord’s option (the exercise of such
option shall be indicated by the inclusion of the words “notice to quit” in such notice), constitute a statutory notice to quit. If Landlord exercises its option to designate a notice of default hereunder as a statutory notice to quit, any
grace periods provided for herein shall run concurrently with any statutory notice periods. Tenant further agrees that it shall not interpose any counterclaim or set-off in any summary proceeding or in any
action based in whole or in part on non-payment of Rent other than mandatory counterclaims. 
 Upon
such entry or mailing the Term shall terminate, all executory rights of Tenant and all obligations of Landlord will immediately cease, and Landlord may expel Tenant and all persons claiming under Tenant and remove their effects without any trespass
and without prejudice to any remedies for arrears of Rent or prior breach; and Tenant waives all statutory and equitable rights to its leasehold (including rights in the nature of further cure or redemption, if any). If Landlord engages attorneys in
connection with any failure to perform by Tenant hereunder, Tenant shall reimburse Landlord within ten (10) days of demand, as Additional Rent, for the reasonable fees of such attorneys. Without implying that other provisions do not survive,
the provisions of this Article shall survive the Term or earlier termination of this Lease. 
 Rent forgiveness, allowances for (and/or
Landlord expenses in designing and constructing) the Initial Tenant Work to ready the Premises for Tenant’s occupancy and the like, if any, have been agreed to by Landlord as inducements for Tenant faithfully to perform all of its obligations
hereunder for the entire Term. For all purposes, upon the occurrence of any Event of Default, any such inducements shall be deemed void as of the date hereof as though such had never been included, and the unamortized amounts (or value) thereof as
of the date of such Event of Default (based on straight line amortization of such amounts (or value), with interest thereon per annum at the Default Rate, over what would otherwise have constituted the Term of this Lease) will be deemed to be
Additional Rent then immediately due. The foregoing will occur automatically without any further notice by Landlord, whether or not the Term is then or thereafter terminated. 

Subject to the provisions of this Article 13, Tenant shall indemnify Landlord against all loss of Rent and other costs, expenses, loss
and damages that Landlord may incur during what would otherwise have constituted the balance of the Term by reason of the termination of this Lease for Tenant’s Event of Default hereunder. Without limiting the generality of the foregoing,
Tenant shall reimburse Landlord for all expenses incurred by Landlord arising out of such termination, including all costs incurred in collecting amounts due from Tenant under this Lease (including reasonable attorneys’ fees, costs of
litigation and the like); all expenses incurred by Landlord in good faith in attempting to relet the Premises or parts thereof (including advertisements, brokerage commissions, tenant allowances, costs of preparing space, and the like); and all
other expenditures by Landlord arising out of or resulting from the termination. The reimbursement from Tenant shall be due and payable immediately from time to time upon notice from Landlord that an expense has been incurred, without regard to
whether the expense was incurred before or after the termination of this Lease. 

  
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 13.02. Remedies for Default. 

13.02(a) Reletting Expenses Damages. If this Lease is terminated for Tenant’s Event of Default, Tenant covenants, as an additional
cumulative obligation after such termination, to pay on demand by Landlord all of Landlord’s reasonable costs, including reasonable attorneys’ fees and costs, related to Tenant’s default and in collecting amounts due, and all
reasonable expenses in connection with reletting, including tenant inducements to new tenants, brokerage commissions, fees for legal services, expenses of preparing the Premises for reletting and the like, together with an administrative charge of
ten (10%) percent of all the foregoing costs (“Reletting Expenses”). It is agreed that Landlord may (i) relet the Premises or part or parts thereof for a term or terms that may be equal to, less than or exceed the period that
would otherwise have constituted the balance of the Term, and may grant such tenant inducements, including free rent, as Landlord in its sole discretion considers advisable, and (ii) make such alterations to the Premises as Landlord in its sole
discretion considers advisable, and no failure to relet or to collect rent under any reletting shall operate to reduce Tenant’s liability. Except to the extent imposed by applicable law, Landlord shall have no obligation to relet the Premises
or any portion thereof, and any obligation to relet imposed by law will be subject to Landlord’s reasonable objectives of developing its property in a harmonious manner with appropriate mixes of tenants, uses, floor areas, terms and the like.

 13.02(b) Termination Damages. If this Lease is terminated for Tenant’s Event of Default, then unless and until Landlord elects
lump sum liquidated damages described in the next paragraph, Tenant covenants, as an additional, cumulative obligation after any such termination, to pay punctually to Landlord all the sums and perform all of its obligations hereunder at the same
time and in the same manner as if this Lease had not been terminated. In calculating such amounts, Tenant will be credited with the net proceeds of any rent then actually received by Landlord from a re-letting
of the Premises after deducting all Rent and Reletting Expenses that have not then been paid by Tenant, provided that Tenant shall never be entitled to receive any portion of the re-letting proceeds, even if
the same exceed the Rent originally due hereunder. 
 13.02(c) Lump Sum Liquidated Damages. If this Lease is terminated for
Tenant’s Event of Default, Tenant covenants, as an additional, cumulative obligation after any such termination, to pay forthwith to Landlord at Landlord’s election made by written notice at any time after termination, as liquidated
damages, a single lump sum payment equal to the sum of (i) all sums then due and owing from Tenant to Landlord at the time of such election, plus (ii) either, as Landlord elects, (A) the excess of the present value of all of the Rent
reserved for the residue of the Term (with Additional Rent deemed to increase four (4%) percent in each year on a non-compounding basis) over the present value of the aggregate Fair Market Rent and Additional
Rent payable on account of the Premises during such period, which Fair Market Rent shall be reduced by reasonable projections of vacancies and by Landlord’s Reletting Expenses described above to the extent not theretofore paid to Landlord, or
(B) an amount equal to the sum of all of the Rent and other sums due under the Lease with respect to the 12-month period next following the date of termination. The Federal Reserve discount rate (or
equivalent) shall be used in calculating such present values under clause (ii)(A). 
 13.02(d) Remedies Cumulative; Late Performance.
The remedies to which Landlord may resort under this Lease, and all other rights and remedies of Landlord, are cumulative, and any two or more may be exercised at the same time. Nothing in this Lease shall limit the right of Landlord to prove and
obtain in proceedings for bankruptcy or insolvency an amount equal to the maximum allowed by any statute or rule of law in effect at the time; and Tenant agrees that the fair value for occupancy of all or any part of the Premises at all times shall
never be less than the Base Rent and all Additional Rent payable from time to time. Tenant shall also indemnify and hold Landlord harmless in the manner provided elsewhere herein if Landlord shall become or be made a party to any claim or action
(a) instituted by Tenant against any third party, or by any third party against Tenant, or by or against any person claiming by, through or under Tenant; (b) for foreclosure of any lien for labor or material furnished to or for Tenant or
such other person; (c) otherwise arising out of or resulting from any act or transaction of Tenant or such other person; or (d) necessary to protect Landlord’s interest under this Lease in a bankruptcy proceeding, or other proceeding
under Title 11 of the United States Code, as amended. 
 13.02(e) Landlord’s Curing. If Tenant fails to perform any covenant
within the applicable cure period (if any), then Landlord at its option may (without waiving any right or remedy for Tenant’s non-performance) at any time thereafter perform the covenant for the account
of Tenant. Tenant shall upon demand reimburse, as Additional Rent, Landlord’s cost (including reasonable attorneys’ fees) of so performing, together with an administrative charge equal to ten percent (10%) of such cost
(“Administrative Charge”) on demand as Additional Rent. Notwithstanding any other provision concerning cure periods, Landlord may cure any non-performance for the account of Tenant after such
notice to Tenant, if any, as is reasonable under the circumstances if curing prior to the expiration of the applicable cure period is reasonably necessary to prevent likely damage to the Premises or the Property or possible injury to persons, or to
protect Landlord’s interest in the Premises or the Property. 

  
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 ARTICLE 14: SECURITY DEPOSIT 

Upon the execution of this Lease, Tenant shall deposit with Landlord a Letter of Credit as described in this Section (the “Letter of
Credit”), as security for the punctual performance of each and every obligation of Tenant under this Lease. Tenant shall simultaneously deliver to Landlord such documentation as Landlord may reasonably require to demonstrate that
Tenant’s obligation to the issuer of the Letter of Credit is a secured obligation. In no event shall the Security Deposit be deemed to be a prepayment of Rent nor shall it be considered a measure of liquidated damages. 

The Letter of Credit shall be an irrevocable standby letter of credit, in form and content and issued by Silicon Valley Bank or another
commercial bank satisfactory to Landlord in its sole discretion (Landlord agreeing not to unreasonably withhold, delay or condition its approval of another commercial bank with a credit rating at that time from Moody’s Investors Service or
Standard & Poor’s equal to or better than that of Silicon Valley Bank as of the date of this Lease), which Letter of Credit shall provide that it may be drawn upon in Boston, Massachusetts (i) in part or in whole, upon the
presentation of a sight draft accompanied by a certificate signed by a representative of Landlord, setting forth the amount due to Landlord by reason of the occurrence of an Event of Default by Tenant hereunder, or (ii) in whole, upon the
presentation of a sight draft accompanied by a certificate signed by a representative of Landlord, stating that (a) such Letter of Credit will expire within thirty (30) days of such certificate, and (b) Tenant has not deposited a
substitute Letter of Credit in the form, amount and issued by a bank as required by this Section. Any payment drawn by Landlord under the Letter of Credit pursuant to clause (ii) of the preceding sentence shall be held by Landlord as a cash
Security Deposit (“Cash Security”) pursuant to the provisions of this Article. Landlord may commingle any Cash Security with Landlord’s other funds, and no interest shall be due thereon. The Letter of Credit shall remain in
full force and effect for a period of at least one hundred twenty (120) days beyond the expiration of the Term. Tenant shall deposit the original Letter of Credit with Landlord and shall keep the Letter of Credit in full force and in compliance
with the provisions of this Lease throughout the Term. 
 Landlord may apply the Security Deposit towards any Event of Default by Tenant
and/or damages sustained by Landlord as a result thereof. In the event that Landlord so draws upon and applies or retains any portion or all of the proceeds of the Letter of Credit, or so applies all or any portion of the Cash Security, Tenant shall
pay to Landlord, as Additional Rent, the amount so expended by Landlord (or shall deliver an amendment to the Letter of Credit increasing the amount of the Letter of Credit by the amount so drawn by Landlord) within three (3) Business Days of
notice given by Landlord so that at all times (subject to the 3-Business Day grace period herein referenced) Landlord shall be entitled to draw down upon the full aggregate amount of the Letter of Credit or
hold the full Cash Security, or some combination thereof. Notwithstanding anything contained in this Lease to the contrary, any failure of Tenant to restore any amount drawn under the Letter of Credit or expended from the Cash Security within the
time and manner specified in this Section shall immediately constitute an Event of Default hereunder (without the necessity of any additional notice or the passage of any additional time) and entitle Landlord to immediately draw down the Letter of
Credit then in force or effect and Landlord shall retain such cash amounts as a Security Deposit pursuant to the provisions of this Section. Tenant shall be solely responsible for the payment of all costs associated with obtaining, replacing (as
necessary), transferring, extending and maintaining the Letter of Credit in accordance with the terms of this Section. The application of all or any part of the Security Deposit to any Event of Default of Tenant under this Lease shall not deprive
Landlord of any other rights or remedies Landlord may have, nor shall such application by Landlord constitute a waiver by Landlord. In addition, in the event of a termination based upon an Event of Default of Tenant under this Lease, or a rejection
of the Lease pursuant to the provisions of the Federal Bankruptcy Code, Landlord shall have the right to apply the Security Deposit (from time to time, if necessary) to cover up to the full amount of damages and other amounts due from Tenant to
Landlord under the Lease. Any amounts so applied shall, at Landlord’s election, be applied first to any unpaid Rent and other charges which were due prior to the filing of the petition for protection under the Federal Bankruptcy Code. 

Landlord shall assign the Security Deposit to any purchaser of the Building, and thereafter Landlord shall have no further responsibility
therefor. Upon request of Landlord or any such purchaser of the Building, Tenant shall, at its expense, cooperate with Landlord in obtaining an amendment to or replacement of any Letter of Credit which Landlord is then holding so that the amended or
new Letter of Credit reflects the name of the new owner of the Building. 
 Within one hundred twenty (120) days after the expiration
or earlier termination of the Term, Landlord shall inspect the Premises, make such draw upon the Letter of Credit or apply all or any portion of the Cash Security as may be required to cure any Event of Default by Tenant hereunder or to make payment
on account of damages suffered by Landlord, and, if no Event of Default is then continuing, Landlord shall redeliver the original Letter of Credit (as may have previously been drawn on by Tenant) or pay the balance of the Cash Security, as the case
may be, to Tenant. 

  
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 Notwithstanding the foregoing, provided that: (i) no Event of Default on the part of
Tenant has occurred prior to the applicable “Reduction Date” (as hereinafter defined), and no such Event of Default is continuing as of such Reduction Date, and (ii) (a) with respect to the first Reduction Date, Tenant demonstrates to
Landlord’s reasonable satisfaction that at all times during the twelve (12) months prior to such Reduction Date Tenant has held unrestricted cash in an amount equal to at least three (3) times the then-applicable amount of Base Rent
for the next twelve (12) months commencing on such Reduction Date, or (b) with respect to the second Reduction Date, Tenant demonstrates to Landlord’s reasonable satisfaction that at all times during the twelve (12) months prior
to such Reduction Date Tenant has held unrestricted cash in an amount equal to at least two (2) times the then-applicable amount of Base Rent for the next twelve (12) months commencing on such Reduction Date; and (iii) the Lease is
then in full force and effect, Landlord agrees to accept a reduction in the amount of the Letter of Credit which it is then holding so as to cause the total Security Deposit to be reduced as of each Reduction Date to the amount shown in the
following schedule: 
  

			
	 Reduction Date
	  	 New Reduced Amount of Security Deposit

	1st day of 37th month after	  	9 months of Base Rent and Operating Costs
	Rent Commencement Date	  	at then-current rates as of the Reduction Date
		
	1st day of 61st month after	  	6 months of Base Rent and Operating Costs
	Rent Commencement Date	  	at then-current rates as of the Reduction Date

 Any reduction in a Letter of Credit held by Landlord as the Security Deposit shall be accomplished by Tenant
providing Landlord with a substitute Letter of Credit in the reduced amount in exchange for the existing Letter of Credit(s) which Landlord is then holding, or by an amendment to the existing Letter of Credit(s) then held by Landlord, in form and
substance reasonably acceptable to Landlord, which is accepted by Landlord in writing. If Tenant does not satisfy the requirements for a reduction in the amount of the Letter of Credit on a Reduction Date as specified above, then Tenant shall have
the right to extend such Reduction Date for up to four (4) months by written notice given to Landlord prior to such Reduction Date in order to enable Tenant to satisfy such requirements as of such extended Reduction Date; failing which Tenant
shall be deemed to have irrevocably forfeited its right to the corresponding reduction in the amount of the Letter of Credit (but such a forfeiture of Tenant’s right to the first reduction in the amount of the Letter of Credit shall not affect
Tenant’s right to receive the second reduction in the amount of the Letter of Credit if the requirements of this paragraph are timely satisfied with respect to such second reduction). 

ARTICLE 15: PROTECTION OF LENDERS/GROUND LANDLORD 

15.01. Subordination and Superiority of Lease. Tenant agrees that this Lease and the rights of Tenant hereunder will be subject and
subordinate to the lien of the holder of any existing or future mortgage, and to the rights of any lessor under any ground or improvements lease of the Building (all mortgages and ground or improvements leases of any priority are collectively
referred to in this Lease as “mortgage”, and the holder or lessor thereof from time to time as a “mortgagee”), and to all advances and interest thereunder and all modifications, renewals, extensions, replacements and
consolidations thereof, provided that such mortgagee executes and delivers to Tenant a subordination, non-disturbance and attornment agreement in the form attached hereto as Exhibit J or in such other
form as such mortgagee may request and as is reasonably acceptable to Tenant. Upon such attornment, this Lease shall continue in full force and effect as a direct lease between the mortgagee and Tenant upon all of the terms, conditions and covenants
as are set forth in this Lease, except that the mortgagee shall not be (i) liable in any way to Tenant for any act or omission, neglect or default on the part of Landlord under this Lease except to the extent to which Tenant previously notified
such mortgagee in writing of such default and such default continues during such mortgagee’s period of ownership; (ii) responsible for any monies held by or on deposit with Landlord to the credit of Tenant unless received by the holder (it
being agreed that Landlord shall remain responsible for such monies until delivered to such holder); (iii) subject to any counterclaim or setoff that theretofore accrued to Tenant against Landlord; (iv) bound by any amendment or modification of
this Lease subsequent to such mortgage or by any previous prepayment of Rent for more than one (1) month which was not approved in writing by the mortgagee (except that such approval shall not be required with respect to any amendment to this
Lease that is ratifying the exercise by Tenant of any rights that Tenant has under this Lease (e.g., rights of extension and expansion)); (v) liable to Tenant beyond the mortgagee’s interest in the Property; or (vi) responsible for the
performance of any work to be done by Landlord under this Lease to render the Premises ready for occupancy by Tenant. Tenant agrees that any present or future mortgagee (or any holder of a ground or improvements lease) may at its option unilaterally
elect to subordinate, in whole or in part and by instrument in form and substance satisfactory to such mortgagee alone, the lien of its mortgage (or the priority of its lease) to this Lease effective upon either notice from such holder to Tenant in
the same fashion as notices from Landlord to Tenant are to be given hereunder or by the recording in the appropriate registry of deeds of an instrument in which such holder subordinates its rights under such mortgage or lease.

  
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 Tenant agrees that this Lease shall survive the merger of estates of ground (or
improvements) lessor and lessee. Until a mortgagee forecloses Landlord’s equity of redemption (or terminates or succeeds to a new lease in the case of a ground or improvements lease), no mortgagee shall be liable for failure to perform any of
Landlord’s obligations (and such mortgagee shall thereafter be liable only after it succeeds to and holds Landlord’s interest and then only as limited herein). 

In the event Tenant alleges that Landlord is in default under any of Landlord’s obligations under this Lease, Tenant agrees to give the
holder of any mortgage, by registered mail, a copy of any notice of default that is served upon Landlord, provided that prior to such notice, Tenant has been notified in writing (whether by way of notice of an assignment of lease, request to execute
an estoppel letter, or otherwise) of the address of any such holder. Tenant further agrees that if Landlord shall have failed to cure such default within the time provided in Section 16.02 below or such additional time as
may be provided in such notice to Landlord, such holder shall have thirty (30) days after the last date on which Landlord could have cured such default within which such holder will be permitted to cure such default. If such default cannot be
cured within such 30-day period, then such holder shall have such additional time as may be necessary to cure such default, if within such 30-day period such holder has
commenced and is diligently pursuing the remedies necessary to effect such cure (including, but not limited to, commencement of foreclosure proceedings, if necessary, to effect such cure). The agreements in this Lease with respect to the rights and
powers of a mortgagee constitute a continuing offer to any person that may be accepted by taking a mortgage (or entering into a ground or improvements lease) of the Premises. 

If, in connection with obtaining financing for the Property or any portion thereof, a bank, insurance company, pension trust or other
institutional lender shall request reasonable modifications to this Lease as a condition to such financing, Tenant will not unreasonably withhold, delay or condition its consent thereto, provided that such modifications do not materially increase
the obligations of Tenant hereunder or materially adversely affect the leasehold interest hereby created. 
 15.02. Rent Assignment.
If at any time and from time to time, Landlord assigns this Lease or the Rent payable hereunder to the holder of any mortgage on the Premises or the Property, or to any other party for the purpose of securing financing (the holder of any such
mortgage and any other such financing party are referred to herein as the “Financing Party”), whether such assignment is conditional in nature or otherwise, the following provisions shall apply: 

 

	 	(A)	 Except as set forth in clause (B) below, such assignment to the Financing Party shall not be deemed an
assumption by the Financing Party of any obligations of Landlord hereunder unless such Financing Party shall, by written notice to Tenant specifically otherwise, elect; 

 

	 	(B)	 The Financing Party shall be treated as having assumed Landlord’s obligations hereunder (subject to
Section 15.01) only upon foreclosure of its mortgage (or voluntary conveyance by deed in lieu thereof); and 

  

	 	(C)	 Subject to Section 15.01 and Section 15.02, the Financing
Party shall be responsible for only such breaches under the Lease by Landlord that occur during the period of ownership by the Financing Party after such foreclosure (or by conveyance by deed in lieu thereof) as aforesaid, except to the extent to
which Tenant previously notified the Financing Party in writing of such breach on the part of Landlord and such breach continues during such Financing Party’s period of ownership. 

Tenant hereby agrees to enter into such reasonable agreements or instruments as may, from time to time, be requested by Landlord in confirmation of the
foregoing. 
 15.03. Other Instruments. The provisions of this Article shall be self-operative; nevertheless, Tenant agrees to
execute, acknowledge and deliver any subordination, attornment or priority agreements or other instruments conforming to the provisions of this Lease from time to time reasonably requested by Landlord or any mortgagee or prospective mortgagee.
Tenant hereby irrevocably constitutes and appoints Landlord or any such mortgagee, acting singly, Tenant’s attorney-in-fact to execute and deliver any such
certificate or instrument for, on behalf and in the name of Tenant, but only if Tenant fails to execute, acknowledge and deliver any such certificate or instrument within fifteen (15) days after Landlord or such mortgagee has made written
request therefor. Without limitation, where Tenant in this Lease indemnifies or otherwise covenants for the benefit of mortgagees, such agreements are for the benefit of mortgagees as third-party beneficiaries; and at the request of Landlord, Tenant
from time to time will confirm such matters directly with such mortgagee. 

  
 46 

 15.04. Estoppel Certificates. Within ten (10) Business Days after the written
request of Landlord, Tenant shall execute, acknowledge and deliver to Landlord a written statement in the form attached hereto as Exhibit K or in such other form as may be reasonably requested by Landlord, certifying (i) that none of the
terms or provisions of this Lease have been changed (or if they have been changed, stating how); (ii) that this Lease has not been canceled or terminated and is in full force and effect; (iii) the last date of payment of Base Rent and other
charges and the time period covered; (iv) to the best of Tenant’s knowledge, that Landlord is not in default under this Lease (or if in default, describing it in reasonable detail); and (v) such other information with respect to
Tenant as Landlord may reasonably request or which any prospective purchaser or encumbrancer of the Property may reasonably require. Landlord may deliver any such statement by Tenant to any prospective purchaser or encumbrancer, which parties may
rely conclusively upon such statement as true and correct. If Tenant does not deliver such statement to Landlord within such 10-Business Day period, Landlord, and any such prospective purchaser or
encumbrancer, may conclusively presume and rely upon the following facts: (i) that the terms and provisions of this Lease have not been changed except as represented by Landlord; (ii) that this Lease has not been canceled or terminated and
is in full force and effect, except as otherwise represented by Landlord; (iii) that not more than one (1) month’s Base Rent or other charges have been paid in advance; and (iv) that Landlord is not in default under this Lease.
In such event, Tenant shall be estopped from denying the truth of such facts. 
 Within ten (10) Business Days after the written
request of Tenant, Landlord shall execute, acknowledge and deliver to Tenant a written statement in such form as may be reasonably requested by Tenant, certifying (i) that none of the terms or provisions of this Lease have been changed (or if
they have been changed, stating how); (ii) that this Lease has not been canceled or terminated and is in full force and effect; (iii) the last date of payment of Base Rent and other charges and the time period covered; (iv) to the best of
Landlord’s knowledge, that Tenant is not in default under this Lease (or if in default, describing it in reasonable detail); and (v) such other information with respect to Landlord as Tenant may reasonably request or which any prospective
encumbrancer of the Tenant’s equipment or personal property in accordance with the provisions of Section 12.01 may reasonably require. Tenant may deliver any such statement by Landlord to any such prospective
encumbrancer, which parties may rely conclusively upon such statement as true and correct. 
 15.05. Financial Condition. Tenant,
within ten (10) Business Days after request from Landlord from time to time, but in no event more than twice per 12-month period, shall deliver to Landlord Tenant’s annual audited financial
statements for the latest available two (2) fiscal years, including the most recent fiscal year prior to Landlord’s request, and quarterly financial statements certified in writing by an officer of Tenant. Landlord may deliver such
financial statements to its mortgagees and lenders and prospective mortgagees, lenders, and purchasers. Tenant represents and warrants to Landlord that each such financial statement shall be true and accurate as of the date of such statements.
Except for publicly available information, financial statements shall be kept confidential, and Landlord and any parties to whom Landlord provides such statements shall enter into reasonable confidentiality agreements with Tenant, in form reasonably
acceptable to both Landlord and Tenant, prior to Tenant’s delivery of such financial statements. 
 ARTICLE 16: MISCELLANEOUS PROVISIONS 

16.01. Landlord’s Consent Fees. In addition to fees and expenses in connection with Tenant Work as described in
Section 10.05 above, Tenant shall pay Landlord’s reasonable out of pocket fees and expenses, including legal, engineering and other consultants’ fees and expenses, incurred in connection with Tenant’s request
for Landlord’s consent under Article 12 or in connection with any other request by Tenant for Landlord’s consent or approval under this Lease. 

16.02. Landlord’s Default. Landlord shall in no event be in default in the performance of any of Landlord’s obligations under
this Lease unless and until Landlord shall have failed to perform such obligation within thirty (30) days after notice by Tenant to Landlord (“Tenant’s Default Notice”) specifying the manner in which Landlord has failed to
perform any such obligation (provided that if correction of any such matter reasonably requires longer than thirty (30) days and Landlord so notifies Tenant within thirty (30) days after such Tenant’s Default Notice is given, Landlord
shall be allowed such longer period, but only if cure is begun within such 30-day period and thereafter diligently prosecuted to completion). In the event of any default by Landlord hereunder, Tenant shall
have no right to perform such Landlord obligation and recover from Landlord any costs so incurred, or (except as expressly otherwise provided in Section 6.03 above) to abate or withhold Rent, but Tenant shall have the
right, in the event of a default by Landlord hereunder, to commence and to prosecute an independent proceeding against Landlord for the recovery of damages or for equitable relief. This Lease shall be construed as though Landlord’s and
Tenant’s covenants contained herein are independent and not dependent, and Tenant hereby waives the benefit of any statute or judicial law to the contrary. In no event shall Landlord ever be liable to Tenant for any indirect, special,
consequential, or punitive damages. 

  
 47 

 16.03. Quiet Enjoyment. Landlord agrees that, so long as no Event of Default has
occurred and is then continuing under this Lease, Tenant shall peaceably and quietly hold, occupy and enjoy the Premises during the Term of this Lease without disturbance by Landlord or by any person claiming through or under Landlord, subject to
the terms of this Lease and any encumbrances of record. 
 16.04. Interpretation. In any provision relating to the conduct, acts or
omissions of Tenant, the term “Tenant” includes Tenant’s agents, employees, contractors, invitees, or successors. In any provision relating to the conduct, acts or omissions of Landlord, the term “Landlord”
includes Landlord’s agents, employees, contractors, invitees, or successors; provided, however, that neither the foregoing nor any reference in this Lease to “invitees” of Landlord shall be construed so as to include Tenant
or any other tenant or occupant of any portion of the Property or any of their respective employees, agents, contractors or invitees. 

16.05. Notices. All notices, requests and other communications required under this Lease shall be in writing, addressed as specified in
Article 1, and shall (unless otherwise expressly provided in this Lease) be (i) personally delivered, or (ii) sent by certified mail, return receipt requested, postage prepaid, or (iii) delivered by a national overnight
delivery service that maintains delivery records. Any notice so addressed shall be effective upon the earlier of (a) actual receipt, or (b) first tender for delivery by the United States Postal Service or a national overnight courier
(provided that such first tender occurs on a Business Day), or (c) on the third Business Day following the day of mailing if so mailed by certified mail, return receipt requested. Either party may change its notice address upon written notice
to the other party. Whenever oral notice is expressly permitted to be provided by either party pursuant to the provisions of this Lease, such notice shall only be valid and effective if such party uses all reasonable efforts to provide confirmatory
written notice to the other party within twenty-four (24) hours of the giving of such oral notice. 
 16.06. No Recordation.
Tenant shall not record this Lease or any portion(s) hereof, and immediately upon any such recording this Lease shall automatically (and without the necessity of any notice from or action by Landlord) terminate. Notwithstanding the foregoing,
Landlord and Tenant agree to execute herewith a Notice of Lease in the form attached hereto as Exhibit M, which shall be recorded with the appropriate Registry of Deeds, and agree to execute, upon termination of this Lease for
whatever cause, a Notice of Termination of Lease in recordable form for recording with said Registry of Deeds. 
 16.07. Corporate
Authority. Each of Tenant and Landlord warrant and represent to the other that (a) such party is duly organized, validly existing and in good standing under the laws of the jurisdiction in which such entity was organized; (b) such
party has the authority to own its property and to carry on its business as contemplated under this Lease; (c) such party has duly executed and delivered this Lease; and (d) the execution, delivery and performance by such party of this
Lease (i) are within the powers of such party, (ii) have been duly authorized by all requisite action, (iii) will not violate any provision of law or any order of any court or agency of government, or any agreement or other instrument
to which such party is a party or by which it or any of its property is bound, and (iv) will not result in the imposition of any lien or charge on any of such party’s property, except by the provisions of this Lease. Each party agrees that
breach of the foregoing warranties and representations shall at the other party’s election be a default under this Lease for which there shall be no cure. These warranties and representations shall survive the expiration of the Term or the
earlier termination of this Lease. Upon execution of this Lease, Tenant shall provide a board resolution or other entity vote authorizing the execution of this Lease on behalf of Tenant and identifying the person authorized to execute this Lease on
behalf of Tenant, together with a clerk’s or secretary’s certificate indicating that such authorized person has in fact executed this Lease. 

16.08. Joint and Several Liability. If more than one party signs this Lease as Tenant, they shall be jointly and severally liable for
all obligations of Tenant. 
 16.09. Force Majeure. If either party is delayed or hindered in or prevented from the performance of any
act required under this Lease to be performed by such party by reason of (i) strikes, lockouts, or labor disputes not attributable to the failure of the party claiming the benefit of a delay due to “Force Majeure” or any of its
contractors (of any tier) to perform their obligations under any applicable labor contract or law; (ii) inability to obtain labor or materials, or reasonable substitutes therefor; (iii) acts of God, governmental action, condemnation, civil
commotion, terrorism, riots, insurrection, war, fire, or other casualty; (iv) trouble in obtaining fuel, electricity, water, sewer, or telecommunication services or supplies from sources from which they are usually obtained, provided the party
experiencing such trouble shall have used reasonable efforts to procure alternative sources; or (v) other conditions similar to those hereinabove enumerated beyond the reasonable control of the party obligated to perform (collectively,
“Force Majeure”), then performance of such act shall be excused for the period of the delay, and the period for the performance of any such 

  
 48 

 
act shall be extended for a period equivalent to the period of such delay. Subject to the provisions of the last sentence of this Section, in case either party is prevented or delayed from
diligent construction of improvements, making any repairs, alterations or improvements, or furnishing any services or performing any other covenant or duty to be performed on the part of such party by reason of any cause reasonably beyond such
party’s control, then notwithstanding any contrary provision of this Lease, such party shall not be liable to the other party therefor nor shall Tenant be entitled to any abatement or reduction of Rent by reason thereof, nor shall the same give
rise to a claim in Tenant’s favor that such failure constitutes actual or constructive, total or partial, eviction from the Premises. In order to claim the benefit of a delay due to “Force Majeure”, the party experiencing such event
or circumstance must (a) notify the other party within a reasonable time period after such delay commences, and (b) use all reasonable and diligent efforts to minimize the duration of such delay and the effect of the delay upon the
progress of construction of its respective work as described in this Work Letter. Nothing in this Section 16.09 shall excuse Tenant’s failure to make payments under this Lease when due. 

16.10. No Warranties; Limitation on Landlord’s Liability. 

16.10(a) No Warranties. Landlord and Tenant expressly agree that there are and shall be no implied warranties of merchantability,
habitability, suitability, fitness for a particular purpose or of any other kind arising out of this Lease, and there are no warranties which extend beyond those expressly set forth in this Lease. 

16.10(b) Limitation On Landlord’s Liability. Tenant agrees that Landlord shall be liable only for breaches of its covenants
occurring while it is owner of the Property; provided, however, that if Landlord from time to time is lessee of the ground or improvements constituting the Building, then Landlord’s period of ownership of the Property shall be deemed to
mean only that period while Landlord holds such leasehold interest. Upon any sale or transfer of the Building, the transferor Landlord (including any mortgagee) shall be relieved of any liability or obligation thereafter arising and Tenant shall
look solely to the transferee Landlord as aforesaid for satisfaction of such liability or obligation except for defaults by Landlord prior to such transfer (for which the transferor Landlord shall remain liable). Tenant and each person acting under
Tenant agrees to look solely to Landlord’s interest from time to time in the Property for satisfaction of any claim against Landlord. No owner, trustee, beneficiary, partner, member, manager, officer, director, agent, or employee of Landlord
(or of any mortgagee or any lender or ground or improvements lessor) nor any person acting under any of them shall ever be personally or individually liable to Tenant or any person claiming under or through Tenant for or on account of any default by
Landlord or failure by Landlord to perform any of its obligations hereunder, or for or on account of any amount or obligations that may be or become due under or in connection with this Lease or the Premises; nor shall it or they ever be answerable
or liable in any equitable judicial proceeding or order beyond the extent of their interest in the Property. No deficit capital account of any member or partner of Landlord shall be deemed to be a liability of such member or partner or an asset of
Landlord. Any lien obtained to enforce any judgment against Landlord shall be subject and subordinate to any mortgage encumbering the Property. In no event shall Landlord or Tenant (or any such persons) ever be liable to the other party, or anyone
claiming through or on behalf of such party, for any special, indirect, punitive or consequential damages, including lost profits or revenues, except as otherwise provided in Section 3.02 with respect to a holdover by Tenant. 

16.11. No Brokers. Landlord and Tenant represent and warrant to each other that the parties named in Article 1 are the only
agents, brokers, finders or other parties with whom such party has dealt who may be entitled to any commission or fee with respect to this Lease or the Premises or the Property. Landlord shall compensate Landlord’s Broker and Tenant’s
Broker pursuant to a separate agreement between Landlord and such Brokers. Landlord and Tenant agree to indemnify and hold the other harmless from any claim, demand, cost or liability, including reasonable attorneys’ fees and expenses, asserted
by any party other than the parties named in Article 1 based upon dealings of that party with the indemnifying party. The provisions of this Section shall survive the expiration of the Term or the earlier termination of this Lease. 

16.12. No Waiver; Accord and Satisfaction. No consent by Landlord or Tenant to any act or omission that otherwise would be a default
shall be construed to permit other similar acts or omissions. Neither party’s failure to seek redress for violation or to insist upon the strict performance of any covenant, nor the receipt by Landlord of Rent with knowledge of any breach of
covenant, shall be deemed a consent to or waiver of such breach. No breach of covenant shall be implied to have been waived unless such is in writing, signed by the party benefiting from such covenant and delivered to the other party. No acceptance
by Landlord of a lesser sum than the Rent due shall be deemed to be other than on account of the earliest installment of such Rent; nor shall any endorsement or statement on any check or in any letter accompanying any check or payment be deemed an
accord and satisfaction; and Landlord may accept such check or payment without prejudice to Landlord’s right to recover the balance of such installment or pursue any other right or remedy. The acceptance by Landlord of any Rent following the
giving of any default and/or termination notice shall not be deemed a waiver of such notice. Tenant shall not interpose any counterclaim or counterclaims in a summary proceeding or in any action based on
non-payment of Rent except to the extent that by failing to do so, Tenant will irrevocably lose the right to assert such claim in an independent action. 

  
 49 

 16.13. Applicable Law and Construction. This Lease may be executed in counterparts,
shall be construed as a sealed instrument, and shall be governed exclusively by the provisions hereof and by the laws of the state where the Property is located without regard to principles of choice of law or conflicts of law. A facsimile or
electronic signature affixed to this Lease shall be sufficient to prove the execution by a party. The covenants of Landlord and Tenant are independent, and such covenants shall be construed as such in accordance with the laws of The Commonwealth of
Massachusetts. If any provision of this Lease or the application thereof to any person or circumstance is for any reason held to be invalid, the remainder of this Lease (or the remainder of such provision) and the application thereof to other
persons or circumstances shall not be affected thereby. Other than contemporaneous instruments executed and delivered of even date, if any, this Lease contains all of the agreements between Landlord and Tenant relating in any way to the Premises and
supersedes all prior agreements and dealings between them. There are no oral agreements between Landlord and Tenant relating to this Lease or the Premises. This Lease may be amended only by instrument in writing executed and delivered by both
Landlord and Tenant. The provisions of this Lease shall bind Landlord and Tenant and their respective successors and assigns, and shall inure to the benefit of Landlord and its successors and assigns and of Tenant and its permitted successors and
assigns, subject to Article 12. The titles are for convenience only and shall not be considered a part of this Lease. This Lease shall not be construed more strictly against one party than against the other merely by virtue of the fact that
it may have been prepared primarily by counsel for one of the parties, it being recognized that both Landlord and Tenant have contributed substantially and materially to the preparation of this Lease. If Tenant is granted any extension or other
option, to be effective the exercise (and notice thereof) shall be unconditional; and if Tenant purports to condition the exercise of any option or to vary its terms in any manner, then the option granted shall be void and the purported exercise
shall be ineffective. Time is of the essence of this Lease and each of its provisions. The enumeration of specific examples of a general provision shall not be construed as a limitation of the general provision, and the term “including”
shall be deemed to mean “including, without limitation”. As used in this Lease, the term “Business Day” shall mean any day other than a Saturday, Sunday, or day on which commercial banks in Boston, Massachusetts are authorized or
required by law to remain closed. Unless a party’s approval or consent is required by the express terms of this Lease to not be unreasonably withheld, conditioned or delayed, such approval or consent may be withheld in the party’s sole
discretion. The submission of a form of this Lease or any summary of its terms shall not constitute an offer by Landlord to Tenant; but a leasehold shall only be created and the parties bound when this Lease is executed and delivered by both
Landlord and Tenant and approved by the holder of any mortgage of the Premises having the right to approve this Lease. Nothing herein shall be construed as creating the relationship between Landlord and Tenant of principal and agent or of partners
or joint venturers or any relationship other than landlord and tenant. This Lease and all consents, notices, approvals and all other related documents may be reproduced by any party by any electronic means or by facsimile, photographic, microfilm,
microfiche or other reproduction process and the originals may be destroyed; and each party agrees that any reproductions shall be as admissible in evidence in any judicial or administrative proceeding as the original itself (whether or not the
original is in existence and whether or not reproduction was made in the regular course of business), and that any further reproduction of such reproduction shall likewise be admissible. If any payment in the nature of interest provided for in this
Lease shall exceed the maximum interest permitted under controlling law, as established by final judgment of a court, then such interest shall instead be at the maximum permitted interest rate as established by such judgment. 

16.14. Waiver of Trial by Jury. LANDLORD AND TENANT HEREBY WAIVE TRIAL BY JURY IN ANY ACTION TO WHICH THEY ARE PARTIES ARISING OUT OF OR
RELATING TO THIS LEASE, THE PREMISES OR THE PROPERTY. 
 16.15. No Representations or Inducements. In entering into this Lease Tenant
acknowledges that Tenant is not relying on any representations, agreements, or promises of Landlord, or any inducements offered by Landlord to Tenant, not expressly set forth in this Lease. 

16.16. No Surrender. No act or thing done by Landlord shall be deemed an acceptance of a surrender of the Premises, and no agreement to
accept such surrender shall be valid, unless in writing signed by Landlord. No employee of Landlord or of Landlord’s agents shall have any power to accept the keys of the Premises prior to the termination of this Lease. The delivery of keys to
any employee of Landlord or of Landlord’s agents shall not operate as a termination of the Lease or a surrender of the Premises. In the event that Tenant at any time desires to have Landlord underlet the Premises for Tenant’s account,
Landlord or Landlord’s agents are authorized to receive the keys or other access devices for such purposes upon written notice from Tenant without releasing Tenant from any of the obligations under this Lease, and Tenant hereby relieves
Landlord of any liability for loss of or damage to any of Tenant’s effects in connection with such underletting. 

  
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 16.17. Arbitration. All disputes between the parties specifically referencing this
Section 16.17 shall be resolved in accordance with this Section 16.17 except (i) Landlord shall have all of its rights and remedies at law or in equity in the event of a default by Tenant,
(ii) Landlord shall have the right to obtain possession of the Premises by any lawful means following a valid termination of this Lease, and (iii) any arbitration decision under this Section 16.17 shall be
enforceable in accordance with applicable law in any court of proper jurisdiction. 
 16.17(a) Initial Construction Disputes. If the
dispute is with respect to matters relating to the Base Building Work or Initial Tenant Work (“Initial Construction Disputes”), the dispute shall initially be submitted by either party to the Landlord Representative and the Tenant
Representative for resolution. The initial representatives of the parties shall be as follows, until a party gives written notice to the other parties that it is replacing its Representative: 

 

			
	 Landlord Representative:
	  	 Tenant Representative:

	Mark A. Deschenes	  	John Athanasopoulos
		
		  	Andrea Armstrong

 The Landlord and Tenant Representatives shall meet one or more times to attempt to resolve such dispute within the 5-Business Day period following the date that such dispute is submitted to them. If, after such meeting(s), the parties have been unable to resolve such dispute, then such dispute shall be resolved as set forth in
Section 16.17(b). 
 16.17(b) Arbitration Procedures. Either party may give written notice of the dispute
requesting resolution under this Section and submit a reasonably detailed written statement of the position and reasons therefor with such notice. The other party will, within ten (10) days ((five (5) days if an Initial Construction
Dispute) of receiving such written statement, submit to the party initiating the dispute resolution its own detailed written statement of the position and reasons therefor. The president of Tenant and Mark A. Deschenes, on behalf of Landlord (or
such other persons as Landlord or Tenant may designate by written notice to the other), shall meet at the earliest mutually acceptable time and place, but in any case within thirty (30) days (ten (10) days if an Initial Construction
Dispute) of the date of the response statement to attempt to resolve the dispute. If the matter has not been resolved within thirty (30) days (ten (10) days if an Initial Construction Dispute) of the date of the response statement, then
either party may initiate arbitration of such controversy by written notice to the other (the “Arbitration Notice”). The arbitration shall be held before a single arbitrator. The parties shall endeavor to agree upon and name the arbitrator
within the 15-day period following the giving of the Arbitration Notice. If the parties fail timely to agree upon and name the arbitrator, then unless the parties agree in writing to another procedure for
designating the arbitrator, either party may by written notice given to the other and to the Boston office of the American Arbitration Association request that the arbitrator be promptly chosen by the Boston office of the American Arbitration
Association. The arbitrator shall commence the arbitration hearing within ten (10) days after appointment, shall complete the arbitration hearing within thirty (30) days after the date the arbitration hearing commenced, and shall render a
written arbitration decision within forty (40)    days after the arbitration hearing commenced, which time periods may be extended by written agreement of the parties or by the arbitrator for good cause, except that any
arbitration of Initial Construction Disputes shall be conducted on an expedited basis and shall be concluded, with a decision issued, no later than two (2) weeks after the date that such dispute was submitted for arbitration. The arbitration
shall be conducted in accordance with then existing expedited procedures under the commercial arbitration rules of the American Arbitration Association; however, to the extent any provision of this paragraph is inconsistent with such procedures, the
provisions of this paragraph shall govern. The decision of the arbitrator shall be final and binding upon the parties and judgment upon the decision rendered by the arbitrator may be entered in any court having jurisdiction thereof. The parties
shall equally share and pay the costs of the arbitrator. Each party shall be afforded a reasonable opportunity to take discovery of the other prior to the commencement of such arbitration consistent with the expedited dispute resolution timetable
set forth in this Section 16.17(b); provided, however, that each party shall be limited to a maximum of twelve (12) deposition hours each. Notwithstanding the foregoing or anything herein to the contrary, the dispute
resolution provisions of this Section shall not apply to a dispute, claim or controversy in which: (i) a party claiming in good faith a breach of any provision of this Lease by the other party seeks immediate equitable relief from a court of
competent jurisdiction to enable the instituting party to prevent irreparable harm (alleged to arise from the alleged breach) pending agreed resolution or a grant of arbitral relief; or (ii) any claim by one party against the other party arises
out of the subject matter of any court litigation or proceeding commenced by any third party against one party in which the other party is an indispensable party or third party defendant; or (iii) any claim is asserted with respect to which a
third party, which is not bound and will not upon request of a party, agree to arbitrate, is an indispensable or necessary party. 

  
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 16.18. Patriot Act. Notwithstanding any other provision contained in this Lease to
the contrary, Tenant shall not knowingly transfer or permit the transfer of any legal or beneficial interest in Tenant to, or assign, sublease or otherwise Transfer all or any portion of its interest under this Lease or in all or any portion of the
Premises to, or enter into any sublease to, any of the following: 
 (a) any person or entity (or any person or entity whose operations are
directed or controlled by a person or entity) that has been convicted of or has pleaded guilty in a criminal proceeding to a felony or that is an on-going target of a grand jury investigation convened pursuant
to applicable statutes concerning organized crime; 
 (b) any entity organized in or controlled from a country, the activities with respect
to which are regulated or controlled pursuant to the following United States laws and the regulations or executive orders promulgated thereunder: (1) the Trading with the Enemy Act of 1917, 50 U.S.C. App. §1, et seq., as amended;
(2) the International Emergency Economic Powers Act of 1976, 50 U.S.C. §1701, et seq., as amended; or (3) the Anti-Terrorism and Arms Export Amendments Act of 1989, codified at Section 6(j) of the Export Administration Act
of 1979, 50 U.S.C. App. §2405W, as amended; or 
 (c) any person or entity with whom Landlord is restricted from doing business under
either (1) Executive Order No. 13224 on Terrorist Financing (effective September 24, 2001 (as amended or supplemented from time to time, the “Executive Order”), or (2) the Uniting and Strengthening America by
Providing Appropriate Tools Required to Intercept and Obstruct Terrorism Act of 2001 (Public Law 10756; as amended, from time to time, the “Patriot Act”), or (3) the regulations of the United States Department of the Treasury
Office of Foreign Assets Control (including those Persons named on the list of “Specially Designated Nationals and Blocked Persons” as modified from time to time), or other governmental action; or 

(d) any Affiliate of any of the persons or entities described in the preceding paragraphs (a), (b) or (c). 

Tenant shall, simultaneously with its execution and delivery of this Lease, deliver to Landlord a certification stating that, to the best of Tenant’s
knowledge, neither Tenant nor any of its constituent partners, investors, beneficiaries or Affiliates, are in violation of any Legal Requirements relating to terrorism or money laundering, including the Executive Order and the Patriot Act and that
neither Tenant, nor its constituent partners, investors, beneficiaries or Affiliates, are listed on the United States Department of the Treasury Office of Foreign Assets Control list of “Specially Designated Nationals and Blocked Persons”
as modified from time to time, and that none of them is otherwise subject to the provisions of the Executive Order or the Patriot Act, or any rules or regulations promulgated thereunder. Thereafter, Tenant shall from time to time, within ten
(10) days after request by Landlord, deliver to Landlord a certification stating that, to the best of Tenant’s knowledge, neither Tenant nor any Transferee, nor any of their respective constituent partners, investors, beneficiaries or
Affiliates, are in violation of any Legal Requirements relating to terrorism or money laundering, including the Executive Order and the Patriot Act and that neither Tenant nor any Transferee, nor any of their respective constituent partners,
investors, beneficiaries or Affiliates, are listed on the United States Department of the Treasury Office of Foreign Assets Control list of “Specially Designated Nationals and Blocked Persons” as modified from time to time, and that none
of them is otherwise subject to the provisions of the Executive Order or the Patriot Act, or any rules or regulations promulgated thereunder. As used in this Lease, the term “Affiliate” shall mean, with respect to any specific
person or entity, any other person or entity which, directly or indirectly, controls or is controlled by or is under common control with such first-mentioned person or entity. For the purposes of this definition, “control” (including, with
correlative meanings, the terms “controlled by” and “under common control with”), as used with respect to any entity, shall mean the possession, directly or indirectly, of the power to direct or cause the direction of the
management and policies of such entity, whether through the ownership of voting stock or by contract or otherwise. 
 (the next page is the
signature page) 

  
 52 

 Executed to take effect as a sealed instrument on the Date of Lease first set forth above.

  

			
	LANDLORD:
	
	480 ARSENAL GROUP LLC,
	a Massachusetts limited liability company
		
	By:	 	 /s/ William P. McQuillan

		 	Name: William P. McQuillan
		 	Title:   Manager
	
	TENANT:
	
	 C4 THERAPEUTICS, INC.,

a Delaware corporation

		
	By:	 	 /s/ Marc Cohen

		 	Marc Cohen,
		 	Executive Chairman

  
 53 

 Schedule 1 

INDEX OF DEFINED TERMS 
  

			
	 TERM
	  	 SECTION

	Additional Rent	  	Section 4.02(a)
	Administrative Charge	  	Section 13.02(e)
	Affiliate	  	Section 16.18
	Agreements	  	Section 2.01(g)
	Annual Operating Statement	  	Section 4.02(a)
	Base Building Plans and Specifications	  	Exhibit C
	Base Building Work	  	Exhibit C
	Base Rent	  	Article 1
	Building	  	Article 1
	Building Holidays	  	Exhibit E
	Building Systems	  	Section 10.05(a)
	Business Day	  	Section 16.13
	Cash Security	  	Article 14
	Construction Documents	  	Section 10.05(b)
	Cosmetic Work	  	Section 10.05(a)
	CPI	  	Section 3.03(c)
	CPI Adjustment	  	Section 3.03(c)
	Date of Lease	  	Article 1
	Default Rate	  	Section 4.04
	Delivery Date	  	Exhibit C
	Environmental Incidents	  	Section 9.04
	Environmental Law	  	Section 9.04
	Estimated Delivery Date	  	Article 1
	Event of Default	  	Section 13.01
	Extension Notice	  	Section 3.03(a)
	Extension Term	  	Section 3.03(a)
	Fair Market Rent	  	Section 3.03(d)
	Financing Party	  	Section 15.02
	Force Majeure	  	Section 16.09
	Guarantor	  	Article 1
	H3 Room	  	Section 2.01(f)
	Hazardous Materials	  	Section 9.04
	Indemnitees	  	Section 9.02
	Initial Tenant Work	  	Exhibit C
	Initial Term	  	Article 1
	Insurance Requirements	  	Section 9.08
	Landlord	  	Article 1
	Landlord’s Allowance	  	Exhibit C
	Landlord’s Broker	  	Article 1
	Landlord’s Fair Market Rent Notice	  	Section 3.03(d)
	Late Penalty Date	  	Exhibit C
	Lease Year	  	Article 1
	Legal Requirement	  	Section 9.03
	Letter of Credit	  	Article 14
	Limited Landlord Services	  	Section 4.02(b)

			
	Material Services Failure	  	Section 6.03
	Measurement Standard	  	Section 2.01(d)
	Mortgage	  	Section 15.01
	Mortgagee	  	Section 15.01
	MSF Notice	  	Section 6.03
	Normal Business Hours	  	Exhibit E
	Operating Costs	  	Section 4.02(a)
	Operating Expenses	  	Section 8.01
	Original Address of Landlord	  	Article 1
	Original Address of Tenant	  	Article 1
	Parking Allotment	  	Section 2.01(f)
	Parking Facilities	  	Section 2.01(f)
	Parking Garage	  	Section 2.01(f)
	Permitted Uses	  	Article 1
	Premises	  	Article 1
	Prime Rate	  	Section 4.04
	Property	  	Article 1
	Real Estate Professional	  	Section 3.03(d)
	Regular Elevator Service Hours	  	Exhibit E
	Related Party Transfer	  	Section 12.03
	Related Party Transferee	  	Section 12.03
	Reletting Expenses	  	Section 13.02(a)
	Rent	  	Section 4.02(a)
	Restoration Areas	  	Section 11.01
	Rules and Regulations	  	Section 9.07
	Security Deposit	  	Article 1
	Sublease	  	Section 12.05
	Substantial Completion	  	Exhibit C
	Substantial Completion Date	  	Exhibit C
	Taxes	  	Section 5.02
	Tenant	  	Article 1
	Tenant Contractor	  	Section 10.05(c)
	Tenant Delays	  	Exhibit C
	Tenant Parties	  	Section 9.02
	Tenant Work	  	Section 10.05(a)
	Tenant Work Threshold Amount	  	Section 10.05(a)
	Tenant’s Architect	  	Section 10.05(b)
	Tenant’s Broker	  	Article 1
	Tenant’s Default Notice	  	Section 16.02
	Tenant’s Expenses	  	Section 12.05
	Tenant’s H3 Space	  	Section 2.01(f)
	Tenant’s Pro Rata Share	  	Section 4.06
	Tenant’s Property	  	Section 10.06
	Term	  	Article 1
	Term Commencement Date	  	Article 1
	Termination Date	  	Article 1
	Transfer	  	Section 12.01
	Transferee	  	Section 12.01
	Utility Service Provider	  	Section 6.01
	Utility Services	  	Section 6.01
	Work Letter	  	Section 3.01

 EXHIBIT A TO LEASE 

BY 480 ARSENAL GROUP LLC TO C4 THERAPEUTICS, INC. 

PLAN OF THE PROPERTY 

[See attached pages] 
 Omitted.

 EXHIBIT B TO LEASE 

BY 480 ARSENAL GROUP LLC TO C4 THERAPEUTICS, INC. 

BUILDING FLOOR PLAN SHOWING THE PREMISES 

[See attached page] 
 Omitted.

 EXHIBIT C TO LEASE 

BY 480 ARSENAL GROUP LLC TO C4 THERAPEUTICS, INC. 

WORK LETTER 
 [See
attached pages] 
 Omitted. 

 EXHIBIT C-1 

LIST OF BASE BUILDING PLANS AND SPECIFICATIONS 

[see attached pages] 

Omitted. 

 EXHIBIT C-2 

TENANT’S INITIAL TEST FIT PLAN 

[see attached pages] 

Omitted. 

 EXHIBIT C-3 

LAB SHELL SPECIFICATIONS 

TENANT LANDLORD MATRIX OF RESPONSIBILITY 

[see attached pages} 

Omitted. 

 EXHIBIT C-4 

PRELIMINARY WORK SCHEDULE 

[see attached pages] 

Omitted. 

 EXHIBIT D TO LEASE 

BY 480 ARSENAL GROUP LLC TO C4 THERAPEUTICS, INC. 

INTENTIONALLY DELETED 

 EXHIBIT E TO LEASE 

BY 480 ARSENAL GROUP LLC TO C4 THERAPEUTICS, INC. 

CLEANING SPECIFICATION FOR COMMON AREAS AND LANDLORD SERVICES 

[See attached pages] 
 Omitted.

 EXHIBIT E 

CLEANING SPECIFICATIONS FOR COMMON AREAS AND LANDLORD SERVICES 

Omitted. 

 EXHIBIT F TO LEASE 

BY 480 ARSENAL GROUP LLC TO C4 THERAPEUTICS, INC. 

SHUTTLE SERVICE 

[See attached pages] 
 Omitted.

 EXHIBIT G TO LEASE 

BY 480 ARSENAL GROUP LLC TO C4 THERAPEUTICS, INC. 

RULES AND REGULATIONS 

[See attached pages] 
 Omitted.

 EXHIBIT H TO LEASE 

BY 480 ARSENAL GROUP LLC TO C4 THERAPEUTICS, INC. 

CONSTRUCTION DOCUMENT REQUIREMENTS 

[See attached pages] 
 Omitted.

 EXHIBIT I TO LEASE 

BY 480 ARSENAL GROUP LLC TO C4 THERAPEUTICS, INC. 

TENANT WORK INSURANCE SCHEDULE 

[See attached pages] 
 Omitted.

 EXHIBIT J TO LEASE 

BY 480 ARSENAL GROUP LLC TO C4 THERAPEUTICS, INC. 

FORM OF SNDA 
 [See
attached pages] 
 Omitted. 

 EXHIBIT K TO LEASE 

BY 480 ARSENAL GROUP LLC TO C4 THERAPEUTICS, INC. 

FORM OF ESTOPPEL CERTIFICATE 

[See attached pages] 
 Omitted.

 EXHIBIT L TO LEASE 

BY 480 ARSENAL GROUP LLC TO C4 THERAPEUTICS, INC. 

EXTERIOR SIGNAGE 

[See attached page] 
 Omitted.

 EXHIBIT M TO LEASE 

BY 480 ARSENAL GROUP LLC TO C4 THERAPEUTICS, INC. 

FORM OF NOTICE OF LEASE 

[See attached pages] 
 Omitted.

  
 - 13 - 

 AMENDMENT TO LEASE 

THIS AMENDMENT TO LEASE (“Amendment”) is made as of August 2, 2018 by and between 480 Arsenal Group LLC, a Massachusetts
limited liability company (“Landlord”), and C4 Therapeutics, Inc., a Delaware corporation (“Tenant”). 

WHEREAS, Landlord and Tenant entered into a Lease dated as of July 5, 2017 (the “Lease”), pursuant to which Landlord leased to
Tenant certain premises situated at 490 Arsenal Way, Watertown, Massachusetts, all as more particularly described in the Lease; and 

WHEREAS, Landlord and Tenant have agreed to modify the provisions of the Lease relating to the “Parking Allotment” (as defined in
the Lease) as set forth in this Amendment. 
 NOW, THEREFORE, for good and valuable consideration, the receipt and sufficiency of which are
hereby acknowledged, Landlord and Tenant hereby agree to amend the Lease as follows: 
 1. All capitalized terms used in this Amendment which
are defined in the Lease and not otherwise defined herein shall have the same meaning herein as in the Lease. 
 2. Exhibit A, Plan of
the Property, is hereby amended by deleting said Exhibit in its entirety and substituting therefor the two pages attached hereto as Exhibit A. 

3. Article 1, Basic Terms, is hereby amended by deleting therefrom the term “Parking Allotment” and its corresponding
definition in their entirety, and substituting therefor the following: 
  

			
	“Parking Allotment:	  	Parking spaces at a ratio of 2.9 parking spaces per 1,000 rentable square feet in the Premises (initially, 132 parking spaces), including twelve (12) reserved covered spaces initially located as shown on Exhibit A
attached hereto. See Section 2.01(g).”

 4. Section 2.01(f)(iv) is hereby amended by deleting said Section in its entirety and substituting therefor the
following: 
 “(iv) In addition, Landlord shall make available to Tenant, for the exclusive use by Tenant, in the location shown as
“C4 Dedicated Inert Gas Tank Storage Pad” on Exhibit A attached hereto, exterior space for the installation of tanks to accommodate the storage of bulk nitrogen and carbon dioxide.” 

5. Section 2.01(g), Parking, is hereby amended by deleting from clause (iii) thereof the phrase “up to ten (1 0) designated
parking spaces” and replacing it with the phrase “up to twelve (12) designated parking spaces”. 

  
 - 14 - 

 6. Except as specifically amended hereby, the Lease shall remain unchanged and shall be in
full force and effect, enforceable in accordance with its terms. In the event of any conflict between the provisions of the Lease and the provisions of this Amendment, the provisions of this Amendment shall govern and control. 

7. This Amendment shall be binding upon and inure to the benefit of the parties hereto and their respective successors and assigns, and may not
be modified, amended or cancelled except by a written instrument executed by the parties hereto or their respective successors or assigns. 

8. Landlord and Tenant each hereby represents and warrants to the other party that it has the power and authority to execute and deliver this
Amendment, and that the person executing this Amendment on its behalf has been authorized to do so. 
 Executed as a sealed instrument as of
the date first set forth above. 
  

			
	LANDLORD:
	
	 480 ARSENAL GROUP LLC,

a Massachusetts limited liability company

		
	By:	 	 /s/ William P. McQuillan

		 	Name: William P. McQuillan
		 	Title: Manager
	
	TENANT:
	
	 C4 THERAPEUTICS, INC.,

a Delaware corporation

		
	By:	 	 DocuSigned by:

/s/ Andy Phillips 

		 	Name: Andy Phillips
		 	Title:   President and CEO

  
 - 15 - 

 EXHIBIT A 

PLAN OF THE PROPERTY 

[see attached plans] 

Omitted. 

  
 - 16 - 

 SECOND AMENDMENT TO LEASE 

THIS SECOND AMENDMENT TO LEASE (“Second Amendment”) is made as of August 22, 2018 by and between 480 Arsenal Group LLC,
a Massachusetts limited liability company (“Landlord”), and C4 Therapeutics, Inc., a Delaware corporation (“Tenant”). 

WHEREAS, Landlord and Tenant entered into a Lease dated as of July 5, 2017, and an Amendment to Lease dated as of August 2, 2018
(collectively, the “Lease”), pursuant to which Landlord leased to Tenant certain premises situated at 490 Arsenal Way, Watertown, Massachusetts, all as more particularly described in the Lease; 

WHEREAS, Tenant has agreed to relinquish its rights to use the existing restrooms on the second floor of the Building adjacent to the
Premises, in return for which Landlord has agreed to construct, at its sole cost and expense, a restroom and shower area for Tenant’s exclusive use which shall be incorporated into Tenant’s Premises; and 

WHEREAS, Landlord and Tenant agree that it is their mutual intent that this modification to the Building and the Premises not materially
affect the total annual amount of Annual Base Rent payable by Tenant as set forth in the Lease; and 
 WHEREAS, Landlord and Tenant have
agreed to modify the provisions of the Lease as set forth in this Second Amendment to accomplish the foregoing. 
 NOW, THEREFORE, for good
and valuable consideration; the receipt and sufficiency of which are hereby acknowledged, Landlord and Tenant hereby agree to amend the Lease as follows: 

1. All capitalized terms used in this Second Amendment which are defined in the Lease and not otherwise defined herein shall have the same
meaning herein as in the Lease. 
 2. Exhibit B, Building Floor Plan Showing the Premises, is hereby amended by deleting said
Exhibit in its entirety and substituting therefor the Exhibit B attached hereto. 
 3. Article 1, Premises, is hereby amended
by deleting therefrom the definition of the term “Premises” in its entirety, and substituting therefor the following: 
  

			
	“Premises:	  	A total rentable area of 45,400 rentable square feet, consisting of 463 rentable square feet on the first floor of the West Wing of the Building and 44,937 rentable square feet on the second floor of the West Wing of the Building,
as shown on Exhibit B attached hereto, as measured in accordance with the provisions of Section 2.01(e).”

 4. Article 1, Tenant’s Pro Rata Share, is hereby amended by deleting therefrom the figure
“24.62%” and substituting therefor the figure “24.54%”. 

  
 - 17 - 

 5. Article 1, Base Rent: Initial Term, is hereby amended by deleting therefrom the
table as it appears in the Lease under said definition and substituting therefor the table attached as Schedule 1 to this Second Amendment. 

6. Section 4.06, Tenant’s Pro Rata Share, is hereby amended by deleting therefrom the figure “24.62%” and substituting
therefor the figure “24.54%”. 
 7. Exhibit C, Work Letter, Section A.4, Landlord’s Allowance, is hereby amended
by deleting therefrom the first sentence as it appears in the Lease and substituting therefor the following: 
 “An
amount not to exceed Five Million Nine Hundred Twenty-Two Thousand Six Hundred Seventy ($5,922,670.00) Dollars, to be paid by Landlord towards the cost of design and construction of the Initial Tenant Work,
which amount shall be paid in the manner provided in this Work Letter.” 
 8. Exhibit C, Work Letter, Section C.4, Payment of
Costs for Initial Tenant Work; Landlord’s Allowance, is hereby amended by deleting therefrom the phrase “(up to a total of Four Hundred Fifty-Five Thousand Five Hundred Ninety ($455,590.00) Dollars)” and substituting therefor the
phrase “(up to a total of Four Hundred Fifty-Four Thousand 
 ($454,000.00) Dollars)”. 

9. Except as specifically amended hereby, the Lease shall remain unchanged and shall be in full force and effect, enforceable in accordance
with its terms. In the event of any conflict between the provisions of the Lease and the provisions of this Second Amendment, the provisions of this Second Amendment shall govern and control. 

10. This Second Amendment shall be binding upon and inure to the benefit of the parties hereto and their respective successors and assigns, and
may not be modified, amended or cancelled except by a written instrument executed by the parties hereto or their respective successors or assigns. 

11. Landlord and Tenant each hereby represents and warrants to the other party that it has the power and authority to execute and deliver this
Second Amendment, and that the person executing this Second Amendment on its behalf has been authorized to do so. 
 12. This Second
Amendment may be executed in counterparts, each of which shall be deemed an original and all such counterparts shall constitute one and the same instrument. A facsimile or electronic signature affixed to this Second Amendment shall be valid as if
affixed to a hard copy hereof in ink. 
 (no further text; signatures appear on the next page) 

  
 - 18 - 

 Executed as a sealed instrument as of the date first set forth above. 

 

			
	LANDLORD:
	
	 480 ARSENAL GROUP LLC,

a Massachusetts limited liability company

		
	By:	 	 /s/ William McQuillan

		 	Name: William McQuillan
		 	Title:   Manager
	
	TENANT:
	
	 C4 THERAPEUTICS, INC.,

a Delaware corporation

		
	By:	 	 /s/ Andrew J. Phillips

		 	Name: Andrew J. Phillips
		 	Title:   President and CEO

  
 - 19 - 

 EXHIBIT B 

BUILDING FLOOR PLAN SHOWING THE PREMISES 

[see attached plan} 

Omitted. 

  
 - 20 - 

 SCHEDULE 1 

TABLE OF ANNUAL BASE RENT FOR THE INITIAL TERM 
  

													
	 Period
	  	Annual Base
Rent	 	  	Monthly Base Rent	 	  	Annual Base Rent Amount	 
	 Rent Commencement Date to 12/31/2019
	  	$	47.16	 	  	$	178,439.42	 	  	$	2,141,273.00	 
	 1/1/2020-12/31/2020
	  	$	48.58	 	  	$	183,792.60	 	  	$	2,205,511.19	 
	 1/1/2021-12/31/2021
	  	$	50.03	 	  	$	189,297.65	 	  	$	2,271,571.74	 
	 1/1/2022-12/31/2022
	  	$	51.54	 	  	$	194,992.52	 	  	$	2,339,910.24	 
	 1/1/2023-12/31/2023
	  	$	53.09	 	  	$	200,839.26	 	  	$	2,410,071.11	 
	 1/1/2024-12/31/2024
	  	$	54.68	 	  	$	206,875.83	 	  	$	2,482,509.91	 
	 1/1/2025-12/31/2025
	  	$	56.32	 	  	$	213,064.26	 	  	$	2,556,771.08	 
	 1/1/2026-12/31/2026
	  	$	58.00	 	  	$	219,442.52	 	  	$	2,633,310.20	 
	 1/1/2027-12/31/2027
	  	$	59.74	 	  	$	226,010.61	 	  	$	2,712,127.27	 
	 1/1/2028-Termination
	  	$	61.53	 	  	$	232,806.49	 	  	$	2,793,677.88Document

Exhibit 4.6

DESCRIPTION OF CAPITAL STOCK

General

Our authorized capital stock consists of 700,000,000 shares of common stock, par value $0.01 per share, and 70,000,000 shares of preferred stock, par value $0.01 per share.

As of August 31, 2020, there were 162,566,475 shares of common stock outstanding and approximately 500 common stockholders of record.

Common Stock

Each holder of our common stock is entitled to one vote for each share on all matters to be voted upon by the common stockholders, and there are no cumulative voting rights. Subject to any preferential rights of any outstanding preferred stock, holders of our common stock are entitled to receive ratably the dividends, if any, as may be declared from time to time by our Board of Directors out of funds legally available for that purpose. If there is a liquidation, dissolution or winding up of our Company, holders of our common stock would be entitled to ratable distribution of our assets remaining after the payment in full of liabilities and any preferential rights of any outstanding preferred stock.

Holders of our common stock do not have any preemptive or conversion rights or other subscription rights, and there are no redemption or sinking fund provisions applicable to the common stock. All outstanding shares of our common stock are fully paid and non-assessable. The rights, preferences and privileges of the holders of our common stock are subject to, and may be adversely affected by, the rights of the holders of shares of any series of preferred stock that we may designate and issue in the future.

Preferred Stock

Under the terms of our sixth amended and restated certificate of incorporation, our Board of Directors is authorized, subject to limitations prescribed by the DGCL and by our sixth amended and restated certificate of incorporation, to issue up to 70,000,000 shares of preferred stock in one or more series without further action by the holders of our common stock. Our Board of Directors has the discretion, subject to limitations prescribed by the DGCL and by our sixth amended and restated certificate of incorporation, to determine the rights, preferences, privileges and restrictions, including voting rights, dividend rights, conversion rights, redemption privileges and liquidation preferences, of each series of preferred stock. We have no current plans to issue any shares of preferred stock.

Anti-Takeover Effects of Various Provisions of Delaware Law and Our Sixth Amended and Restated Certificate of Incorporation and Amended and Restated Bylaws

Provisions of the DGCL and our sixth amended and restated certificate of incorporation and amended and restated bylaws could make it more difficult to acquire SelectQuote by means of a tender offer, a proxy contest or otherwise, or to remove incumbent officers and directors. These provisions, summarized below, may discourage certain types of coercive takeover practices and takeover bids that our Board of Directors may consider inadequate and to encourage persons seeking to acquire control of the Company to first negotiate with our Board of Directors. SelectQuote believes that the benefits of increased protection of its ability to negotiate with the proponent of an unfriendly or unsolicited proposal to acquire or restructure it outweigh the disadvantages of discouraging takeover or acquisition proposals because, among other things, negotiation of these proposals could result in an improvement of their terms.

Delaware Anti-Takeover Statute

As a Delaware corporation, SelectQuote is subject to Section 203 of the DGCL regarding corporate takeovers. In general, Section 203 of the DGCL prohibits a publicly held Delaware corporation from engaging in a “business combination” with an “interested stockholder” for a period of three years following the time the person became an interested stockholder, unless:

•prior to the date of the transaction, our Board of Directors has approved either the business combination or the transaction that resulted in the stockholder becoming an interested stockholder;

•upon completion of the transaction that resulted in the stockholder becoming an interested stockholder, the interested stockholder owned at least 85% of the voting stock outstanding at the time such transaction commenced, excluding, for purposes of determining the number of shares outstanding, (a) shares owned by persons who are directors and also officers and (b) shares owned by employee stock plans in which employee participants do not have the right to determine confidentially whether shares held subject to the plan will be tendered in a tender or exchange offer; or

•on or subsequent to such time the business combination is approved by our Board of Directors and authorized at a meeting of stockholders by the affirmative vote of at least two-thirds of the outstanding voting stock not owned by the interested stockholder.

In this context, a “business combination” includes a merger, asset or stock sale, or other transaction resulting in a financial benefit to the interested stockholder. An “interested stockholder” is a person who, together with affiliates and associates, owns or, within three years prior to the determination of interested stockholder status owned, 15% or more of our outstanding voting stock. The existence of this provision would be expected to have an anti-takeover effect with respect to transactions not approved in advance by our Board of Directors, including discouraging attempts that might result in a premium over the market price for the shares of common stock held by our stockholders.

A Delaware corporation may “opt out” of Section 203 with an express provision in its original certificate of incorporation or an express provision in its certificate of incorporation or bylaws resulting from amendments approved by holders of at least a majority of our outstanding voting shares. We have not elected to “opt out” of Section 203. However, subject to certain restrictions, we may elect to “opt out” of Section 203 by an amendment to our certificate of incorporation or bylaws.

Classified Board

Our sixth amended and restated certificate of incorporation and amended and restated bylaws provides that our Board of Directors be divided into three classes, each of which is composed initially of two or three directors. The directors designated as Class I directors have terms expiring at the first annual meeting of stockholders to be held in 2020. The directors designated as Class II directors have terms expiring at the annual meeting of stockholders to be held in 2021, and the directors designated as Class III directors have terms expiring at the annual meeting of stockholders to be held in 2022. Commencing with the first annual meeting of stockholders to be held in 2020, directors for each class will be elected at the annual meeting of stockholders held in the year in which the term for that class expires and thereafter will serve for a term of three years. At any meeting of stockholders for the election of directors at which a quorum is present, the election will be determined by a plurality of the votes cast by the stockholders entitled to vote in the election. Under the classified board provisions, it may take two elections of directors for any individual or group to gain control of our Board of Directors. Accordingly, these provisions could discourage a third party from initiating a proxy contest, making a tender offer or otherwise attempting to gain control of SelectQuote.

2

Removal of Directors

Our sixth amended and restated certificate of incorporation provides that our stockholders may remove our directors only for cause, by an affirmative vote of holders of at least a majority of the voting power of the then-outstanding shares of voting stock.

Amendments to Certificate of Incorporation and Bylaws

Our sixth amended and restated certificate of incorporation provides that it may be amended or altered in any manner provided by the DGCL. Our amended and restated bylaws may be adopted, amended, altered or repealed by stockholders upon the approval of at least two-thirds of the voting power of all of the then-outstanding shares of stock entitled to vote at an election of directors. Additionally, our sixth amended and restated certificate of incorporation and our amended and restated bylaws provides that our bylaws may be adopted, amended, altered or repealed by the Board of Directors.

Size of Board and Vacancies

Our sixth amended and restated certificate of incorporation and our amended and restated bylaws provides that the number of directors on our Board of Directors is fixed exclusively by our Board of Directors. Any vacancies on our Board of Directors resulting from any increase in the authorized number of directors or the death, resignation, retirement, disqualification, removal from office or other cause will be filled by a majority of the Board of Directors then in office, whether or not less than a quorum. Our sixth amended and restated certificate of incorporation and our amended and restated bylaws provide that any director appointed to fill a vacancy on our Board of Directors will hold office for a term expiring at the annual meeting of stockholders at which the term of office of the class to which he or she been appointed expires and until such director’s successor shall have been duly elected and qualified.

Special Stockholder Meetings

Our amended and restated bylaws provide that only the chairman of the Board of Directors, the chief executive officer or an officer at the request of a majority of the members of the Board of Directors pursuant to a resolution approved by the Board of the Directors may call special meetings of SelectQuote stockholders. Stockholders may not call special stockholder meetings.

Stockholder Action by Written Consent

Our sixth amended and restated certificate of incorporation prohibits the right of our stockholders to act by written consent. From and after the effectiveness of our sixth amended and restated certificate of incorporation, stockholder action must take place at the annual or a special meeting of SelectQuote stockholders.

Requirements for Advance Notification of Stockholder Nominations and Proposals

Our amended and restated bylaws establish advance notice procedures with respect to stockholder proposals and nomination of candidates for election as directors, as well as minimum qualification requirements for stockholders making the proposals or nominations. Additionally, our amended and restated bylaws require that candidates nominated by stockholders for election as director disclose their qualifications and make certain representations, including that (a) they are not a party to any undisclosed voting commitment, any voting commitment that could interfere with their ability to fulfill their fiduciary duties as a director of SelectQuote, should they be elected, or any undisclosed agreement pursuant to which they would receive compensation, reimbursement or indemnification in connection with their service as a director of SelectQuote, (b) they will be in compliance, should they be elected, with the Company’s corporate governance guidelines and the Company’s conflict of interest, confidentiality and stock ownership and trading policies and (c) they will abide by the procedures for the election of directors in our amended and restated bylaws.

3

No Cumulative Voting

The DGCL provides that stockholders will not have the right to cumulate votes in the election of directors unless the company’s certificate of incorporation provides otherwise. Our sixth amended and restated certificate of incorporation does not provide for cumulative voting.

Undesignated Preferred Stock

The authority that our Board of Directors possesses to issue preferred stock could potentially be used to discourage attempts by third parties to obtain control of SelectQuote through a merger, tender offer, proxy contest or otherwise by making such attempts more difficult or more costly. Our Board of Directors may be able to issue preferred stock with voting rights or conversion rights that, if exercised, could adversely affect the voting power of the holders of common stock.

Corporate Opportunities

Our sixth amended and restated certificate of incorporation provides that, to the fullest extent permitted by law, we have, on behalf of ourselves, our stockholders and any of our and their respective affiliates, renounced any interest or expectancy in, or in being notified of or offered an opportunity to participate in, any business opportunity that may be presented to our directors that are not our employees or to any of their affiliates, partners or other representatives, and that no such person has any duty to communicate or offer such business opportunity to us or any of our affiliates or stockholders or shall be liable to us or any of our affiliates or stockholders for breach of any duty, as a director or otherwise, by reason of the fact that such person pursues or acquires such business opportunity, directs such business opportunity to another person or fails to present such business opportunity, or information regarding such business opportunity, to us or any of our affiliates or stockholders, unless, in the case of any such person who is a director of our Company, such business opportunity is expressly offered to such director solely in his or her capacity as a director of our Company.

Limitations on Liability, Indemnification of Officers and Directors and Insurance

Elimination of Liability of Directors

The DGCL authorizes corporations to limit or eliminate the personal liability of directors to corporations and their stockholders for monetary damages for breaches of directors’ fiduciary duties as directors, and our sixth amended and restated certificate of incorporation includes such an exculpation provision. Our sixth amended and restated certificate of incorporation provides that, to the fullest extent permitted by the DGCL, no director will be personally liable to us or to our stockholders for monetary damages for breach of fiduciary duty as a director. While our sixth amended and restated certificate of incorporation provides directors with protection from awards for monetary damages for breaches of their duty of care, it does not eliminate this duty. Accordingly, our sixth amended and restated certificate of incorporation has no effect on the availability of equitable remedies such as an injunction or rescission based on a director’s breach of his or her duty of care. The provisions of our sixth amended and restated certificate of incorporation described above applies to an officer of SelectQuote only if he or she is a director of SelectQuote and is acting in his or her capacity as director, and does not apply to officers of SelectQuote who are not directors.

Indemnification of Directors, Officers and Employees

Our sixth amended and restated certificate of incorporation and our amended and restated bylaws requires us to indemnify any person who was or is a party or is threatened to be made a party to or is otherwise involved in any threatened, pending or completed action, suit or proceeding by reason of the fact that he or she is or was a director or officer of SelectQuote, or is or was serving at the request of SelectQuote as a director, officer, trustee, employee or agent of another corporation or of a partnership, joint venture, trust or other enterprise, including service with respect to employee benefit plans maintained or sponsored by SelectQuote, against all expense, liability and loss (including attorneys’ fees, judgments, fines, ERISA excise taxes or penalties and amounts paid or to be paid 
4

in settlement) incurred or suffered by such person in connection with such proceeding if the person acted in good faith and in a manner reasonably believed to be in or not opposed to the best interests of SelectQuote, and, with respect to any criminal action or proceeding, had no reasonable cause to believe his or her conduct was unlawful.

We are authorized under our sixth amended and restated certificate of incorporation and our amended and restated bylaws to purchase and maintain insurance to protect SelectQuote and any current or former director, officer, employee or agent of SelectQuote or another corporation, partnership, joint venture, trust or other enterprise against any expense, liability or loss, whether or not SelectQuote would have the power to indemnify such person against such expense, liability or loss under the DGCL.

We have entered into indemnification agreements with each of our directors and officers. The indemnification agreements provide that we will indemnify each indemnitee to the fullest extent permitted by the DGCL from and against all loss and liability suffered and expenses, judgments, fines and amounts paid in settlement incurred in connection with defending, investigating or settling any threatened, pending, or completed action, suit or proceeding related to the indemnitee’s service with the Company. Additionally, we agree to advance to the indemnitee expenses incurred in connection therewith.

The limitation of liability and indemnification provisions in these indemnification agreements and our sixth amended and restated certificate of incorporation and amended and restated bylaws may discourage stockholders from bringing a lawsuit against our directors for breach of fiduciary duty. These provisions also may reduce the likelihood of derivative litigation against our directors and officers, even though such an action, if successful, might otherwise benefit us and our stockholders. In addition, your investment in our common stock may be adversely affected to the extent we pay the costs of settlement and damage awards under these indemnification provisions. There is currently no pending material litigation or proceeding against any SelectQuote directors or officers for which indemnification is sought.

Exclusive Forum

Our sixth amended and restated certificate of incorporation provides that, unless the Board of Directors otherwise determines, the state courts located within the State of Delaware or, if no state court located in the State of Delaware has jurisdiction, the federal court for the District of Delaware, will be the sole and exclusive forum for any derivative action or proceeding brought on behalf of SelectQuote, any action asserting a claim of breach of a fiduciary duty owed by any director or officer of SelectQuote to SelectQuote or our stockholders, any action asserting a claim against SelectQuote or any director or officer of SelectQuote arising pursuant to any provision of the DGCL or our sixth amended and restated certificate of incorporation or amended and restated bylaws, or any action asserting a claim against SelectQuote or any director or officer of SelectQuote governed by the internal affairs doctrine. Under our sixth amended and restated certificate of incorporation, to the fullest extent permitted by law, this exclusive forum provision will apply to all actions asserting covered Delaware state law claims, including any other claims, such as federal securities law claims, that a stockholder chooses to bring in the same action. This exclusive forum provision does not apply to actions that do not assert any covered Delaware state law claims, such as, for example, any action asserting solely federal securities law claims.

Authorized but Unissued Shares

Our authorized but unissued shares of common stock and preferred stock will be available for future issuance without stockholder approval. We may use additional shares for a variety of purposes, including future public offerings to raise additional capital, to fund acquisitions and as employee compensation. The existence of authorized but unissued shares of common stock and preferred stock could render more difficult or discourage an attempt to obtain control of SelectQuote by means of a proxy contest, tender offer, merger or otherwise.

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Stock Options

As of the June 30, 2020, options to purchase 4,067,417 shares of common stock were outstanding under the Stock Plans at a weighted-average exercise price of $2.69 per share, of which 3,216,521 shares were vested and exercisable at a weighted-average exercise price of $0.84 per share.

Transfer Agent and Registrar

The transfer agent and registrar for the common stock is Computershare Trust Company, N.A.

Listing

Our shares of common stock are listed on the NYSE under the symbol “SLQT".

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